* [PATCH 01/31] NFS: Introduce new-style XDR encoding functions for NFSv2
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
@ 2010-12-14 14:54 ` Chuck Lever
2010-12-14 14:54 ` [PATCH 02/31] NFS: Remove old NFSv2 encoder functions Chuck Lever
` (30 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:54 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
We're interested in taking advantage of the safety benefits of
xdr_streams. These data structures allow more careful checking for
buffer overflow while encoding. More careful type checking is also
introduced in the new functions.
For efficiency, we also eventually want to be able to pass xdr_streams
from call_encode() to all XDR encoding functions, rather than building
an xdr_stream in every XDR encoding function in the kernel. To do
this means all encoders must be ready to handle a passed-in
xdr_stream.
The new encoders follow the modern paradigm for XDR encoders: BUG on
any error, and always return a zero status code.
Static helper functions are left without the "inline" directive. This
allows the compiler to choose automatically how to optimize these for
size or speed.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs2xdr.c | 406 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 403 insertions(+), 3 deletions(-)
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 5914a19..869e215 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -61,6 +61,23 @@
#define NFS_readdirres_sz (1)
#define NFS_statfsres_sz (1+NFS_info_sz)
+
+/*
+ * While encoding arguments, set up the reply buffer in advance to
+ * receive reply data directly into the page cache.
+ */
+static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages,
+ unsigned int base, unsigned int len,
+ unsigned int bufsize)
+{
+ struct rpc_auth *auth = req->rq_cred->cr_auth;
+ unsigned int replen;
+
+ replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize;
+ xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len);
+}
+
+
/*
* Common NFS XDR functions as inlines
*/
@@ -81,7 +98,7 @@ xdr_decode_fhandle(__be32 *p, struct nfs_fh *fhandle)
}
static inline __be32*
-xdr_encode_time(__be32 *p, struct timespec *timep)
+xdr_encode_time(__be32 *p, const struct timespec *timep)
{
*p++ = htonl(timep->tv_sec);
/* Convert nanoseconds into microseconds */
@@ -90,7 +107,7 @@ xdr_encode_time(__be32 *p, struct timespec *timep)
}
static inline __be32*
-xdr_encode_current_server_time(__be32 *p, struct timespec *timep)
+xdr_encode_current_server_time(__be32 *p, const struct timespec *timep)
{
/*
* Passing the invalid value useconds=1000000 is a
@@ -174,6 +191,136 @@ xdr_encode_sattr(__be32 *p, struct iattr *attr)
}
/*
+ * Encode/decode NFSv2 basic data types
+ *
+ * Basic NFSv2 data types are defined in section 2.3 of RFC 1094:
+ * "NFS: Network File System Protocol Specification".
+ *
+ * Not all basic data types have their own encoding and decoding
+ * functions. For run-time efficiency, some data types are encoded
+ * or decoded inline.
+ */
+
+/*
+ * 2.3.3. fhandle
+ *
+ * typedef opaque fhandle[FHSIZE];
+ */
+static void encode_fhandle(struct xdr_stream *xdr, const struct nfs_fh *fh)
+{
+ __be32 *p;
+
+ BUG_ON(fh->size != NFS2_FHSIZE);
+ p = xdr_reserve_space(xdr, NFS2_FHSIZE);
+ memcpy(p, fh->data, NFS2_FHSIZE);
+}
+
+/*
+ * 2.3.6. sattr
+ *
+ * struct sattr {
+ * unsigned int mode;
+ * unsigned int uid;
+ * unsigned int gid;
+ * unsigned int size;
+ * timeval atime;
+ * timeval mtime;
+ * };
+ */
+
+#define NFS2_SATTR_NOT_SET (0xffffffff)
+
+static __be32 *xdr_time_not_set(__be32 *p)
+{
+ *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
+ *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
+ return p;
+}
+
+static void encode_sattr(struct xdr_stream *xdr, const struct iattr *attr)
+{
+ __be32 *p;
+
+ p = xdr_reserve_space(xdr, NFS_sattr_sz << 2);
+
+ if (attr->ia_valid & ATTR_MODE)
+ *p++ = cpu_to_be32(attr->ia_mode);
+ else
+ *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
+ if (attr->ia_valid & ATTR_UID)
+ *p++ = cpu_to_be32(attr->ia_uid);
+ else
+ *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
+ if (attr->ia_valid & ATTR_GID)
+ *p++ = cpu_to_be32(attr->ia_gid);
+ else
+ *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
+ if (attr->ia_valid & ATTR_SIZE)
+ *p++ = cpu_to_be32((u32)attr->ia_size);
+ else
+ *p++ = cpu_to_be32(NFS2_SATTR_NOT_SET);
+
+ if (attr->ia_valid & ATTR_ATIME_SET)
+ p = xdr_encode_time(p, &attr->ia_atime);
+ else if (attr->ia_valid & ATTR_ATIME)
+ p = xdr_encode_current_server_time(p, &attr->ia_atime);
+ else
+ p = xdr_time_not_set(p);
+ if (attr->ia_valid & ATTR_MTIME_SET)
+ xdr_encode_time(p, &attr->ia_mtime);
+ else if (attr->ia_valid & ATTR_MTIME)
+ xdr_encode_current_server_time(p, &attr->ia_mtime);
+ else
+ xdr_time_not_set(p);
+}
+
+/*
+ * 2.3.7. filename
+ *
+ * typedef string filename<MAXNAMLEN>;
+ */
+static void encode_filename(struct xdr_stream *xdr,
+ const char *name, u32 length)
+{
+ __be32 *p;
+
+ BUG_ON(length > NFS2_MAXNAMLEN);
+ p = xdr_reserve_space(xdr, 4 + length);
+ xdr_encode_opaque(p, name, length);
+}
+
+/*
+ * 2.3.8. path
+ *
+ * typedef string path<MAXPATHLEN>;
+ */
+static void encode_path(struct xdr_stream *xdr, struct page **pages, u32 length)
+{
+ __be32 *p;
+
+ BUG_ON(length > NFS2_MAXPATHLEN);
+ p = xdr_reserve_space(xdr, 4);
+ *p = cpu_to_be32(length);
+ xdr_write_pages(xdr, pages, 0, length);
+}
+
+/*
+ * 2.3.10. diropargs
+ *
+ * struct diropargs {
+ * fhandle dir;
+ * filename name;
+ * };
+ */
+static void encode_diropargs(struct xdr_stream *xdr, const struct nfs_fh *fh,
+ const char *name, u32 length)
+{
+ encode_fhandle(xdr, fh);
+ encode_filename(xdr, name, length);
+}
+
+
+/*
* NFS encode functions
*/
/*
@@ -188,6 +335,16 @@ nfs_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh)
return 0;
}
+static int nfs2_xdr_enc_fhandle(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_fh *fh)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_fhandle(&xdr, fh);
+ return 0;
+}
+
/*
* Encode SETATTR arguments
*/
@@ -201,6 +358,25 @@ nfs_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs_sattrargs *args)
}
/*
+ * 2.2.3. sattrargs
+ *
+ * struct sattrargs {
+ * fhandle file;
+ * sattr attributes;
+ * };
+ */
+static int nfs2_xdr_enc_sattrargs(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_sattrargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_fhandle(&xdr, args->fh);
+ encode_sattr(&xdr, args->sattr);
+ return 0;
+}
+
+/*
* Encode directory ops argument
* LOOKUP, RMDIR
*/
@@ -213,6 +389,16 @@ nfs_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs_diropargs *args)
return 0;
}
+static int nfs2_xdr_enc_diropargs(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_diropargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_diropargs(&xdr, args->fh, args->name, args->len);
+ return 0;
+}
+
/*
* Encode REMOVE argument
*/
@@ -225,6 +411,18 @@ nfs_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs
return 0;
}
+static int nfs2_xdr_enc_readlinkargs(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_readlinkargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_fhandle(&xdr, args->fh);
+ prepare_reply_buffer(req, args->pages, args->pgbase,
+ args->pglen, NFS_readlinkres_sz);
+ return 0;
+}
+
/*
* Arguments to a READ call. Since we read data directly into the page
* cache, we also set up the reply iovec here so that iov[1] points
@@ -253,6 +451,44 @@ nfs_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
}
/*
+ * 2.2.7. readargs
+ *
+ * struct readargs {
+ * fhandle file;
+ * unsigned offset;
+ * unsigned count;
+ * unsigned totalcount;
+ * };
+ */
+static void encode_readargs(struct xdr_stream *xdr,
+ const struct nfs_readargs *args)
+{
+ u32 offset = args->offset;
+ u32 count = args->count;
+ __be32 *p;
+
+ encode_fhandle(xdr, args->fh);
+
+ p = xdr_reserve_space(xdr, 4 + 4 + 4);
+ *p++ = cpu_to_be32(offset);
+ *p++ = cpu_to_be32(count);
+ *p = cpu_to_be32(count);
+}
+
+static int nfs2_xdr_enc_readargs(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_readargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_readargs(&xdr, args);
+ prepare_reply_buffer(req, args->pages, args->pgbase,
+ args->count, NFS_readres_sz);
+ req->rq_rcv_buf.flags |= XDRBUF_READ;
+ return 0;
+}
+
+/*
* Decode READ reply
*/
static int
@@ -318,6 +554,47 @@ nfs_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
}
/*
+ * 2.2.9. writeargs
+ *
+ * struct writeargs {
+ * fhandle file;
+ * unsigned beginoffset;
+ * unsigned offset;
+ * unsigned totalcount;
+ * nfsdata data;
+ * };
+ */
+static void encode_writeargs(struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
+{
+ u32 offset = args->offset;
+ u32 count = args->count;
+ __be32 *p;
+
+ encode_fhandle(xdr, args->fh);
+
+ p = xdr_reserve_space(xdr, 4 + 4 + 4 + 4);
+ *p++ = cpu_to_be32(offset);
+ *p++ = cpu_to_be32(offset);
+ *p++ = cpu_to_be32(count);
+
+ /* nfsdata */
+ *p = cpu_to_be32(count);
+ xdr_write_pages(xdr, args->pages, args->pgbase, count);
+}
+
+static int nfs2_xdr_enc_writeargs(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_writeargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_writeargs(&xdr, args);
+ xdr.buf->flags |= XDRBUF_WRITE;
+ return 0;
+}
+
+/*
* Encode create arguments
* CREATE, MKDIR
*/
@@ -332,6 +609,35 @@ nfs_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs_createargs *args)
}
/*
+ * 2.2.10. createargs
+ *
+ * struct createargs {
+ * diropargs where;
+ * sattr attributes;
+ * };
+ */
+static int nfs2_xdr_enc_createargs(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_createargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_diropargs(&xdr, args->fh, args->name, args->len);
+ encode_sattr(&xdr, args->sattr);
+ return 0;
+}
+
+static int nfs2_xdr_enc_removeargs(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_removeargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_diropargs(&xdr, args->fh, args->name.name, args->name.len);
+ return 0;
+}
+
+/*
* Encode RENAME arguments
*/
static int
@@ -346,6 +652,27 @@ nfs_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs_renameargs *args)
}
/*
+ * 2.2.12. renameargs
+ *
+ * struct renameargs {
+ * diropargs from;
+ * diropargs to;
+ * };
+ */
+static int nfs2_xdr_enc_renameargs(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_renameargs *args)
+{
+ const struct qstr *old = args->old_name;
+ const struct qstr *new = args->new_name;
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_diropargs(&xdr, args->old_dir, old->name, old->len);
+ encode_diropargs(&xdr, args->new_dir, new->name, new->len);
+ return 0;
+}
+
+/*
* Encode LINK arguments
*/
static int
@@ -359,6 +686,25 @@ nfs_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs_linkargs *args)
}
/*
+ * 2.2.13. linkargs
+ *
+ * struct linkargs {
+ * fhandle from;
+ * diropargs to;
+ * };
+ */
+static int nfs2_xdr_enc_linkargs(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_linkargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_fhandle(&xdr, args->fromfh);
+ encode_diropargs(&xdr, args->tofh, args->toname, args->tolen);
+ return 0;
+}
+
+/*
* Encode SYMLINK arguments
*/
static int
@@ -388,6 +734,27 @@ nfs_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs_symlinkargs *arg
}
/*
+ * 2.2.14. symlinkargs
+ *
+ * struct symlinkargs {
+ * diropargs from;
+ * path to;
+ * sattr attributes;
+ * };
+ */
+static int nfs2_xdr_enc_symlinkargs(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_symlinkargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_diropargs(&xdr, args->fromfh, args->fromname, args->fromlen);
+ encode_path(&xdr, args->pages, args->pathlen);
+ encode_sattr(&xdr, args->sattr);
+ return 0;
+}
+
+/*
* Encode arguments to readdir call
*/
static int
@@ -409,6 +776,39 @@ nfs_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs_readdirargs *arg
}
/*
+ * 2.2.17. readdirargs
+ *
+ * struct readdirargs {
+ * fhandle dir;
+ * nfscookie cookie;
+ * unsigned count;
+ * };
+ */
+static void encode_readdirargs(struct xdr_stream *xdr,
+ const struct nfs_readdirargs *args)
+{
+ __be32 *p;
+
+ encode_fhandle(xdr, args->fh);
+
+ p = xdr_reserve_space(xdr, 4 + 4);
+ *p++ = cpu_to_be32(args->cookie);
+ *p = cpu_to_be32(args->count);
+}
+
+static int nfs2_xdr_enc_readdirargs(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_readdirargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_readdirargs(&xdr, args);
+ prepare_reply_buffer(req, args->pages, 0,
+ args->count, NFS_readdirres_sz);
+ return 0;
+}
+
+/*
* Decode the result of a readdir call.
* We're not really decoding anymore, we just leave the buffer untouched
* and only check that it is syntactically correct.
@@ -698,7 +1098,7 @@ nfs_stat_to_errno(int stat)
#define PROC(proc, argtype, restype, timer) \
[NFSPROC_##proc] = { \
.p_proc = NFSPROC_##proc, \
- .p_encode = (kxdrproc_t) nfs_xdr_##argtype, \
+ .p_encode = (kxdrproc_t)nfs2_xdr_enc_##argtype, \
.p_decode = (kxdrproc_t) nfs_xdr_##restype, \
.p_arglen = NFS_##argtype##_sz, \
.p_replen = NFS_##restype##_sz, \
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 02/31] NFS: Remove old NFSv2 encoder functions
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
2010-12-14 14:54 ` [PATCH 01/31] NFS: Introduce new-style XDR encoding functions for NFSv2 Chuck Lever
@ 2010-12-14 14:54 ` Chuck Lever
2010-12-14 14:54 ` [PATCH 03/31] NFS: Update xdr_encode_foo() functions that we're keeping Chuck Lever
` (29 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:54 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up: Remove unused legacy argument encoder functions, and any
now unused encoder helper functions.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs2xdr.c | 249 +-----------------------------------------------------
1 files changed, 4 insertions(+), 245 deletions(-)
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 869e215..f5ea9dc 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -82,13 +82,6 @@ static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages,
* Common NFS XDR functions as inlines
*/
static inline __be32 *
-xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fhandle)
-{
- memcpy(p, fhandle->data, NFS2_FHSIZE);
- return p + XDR_QUADLEN(NFS2_FHSIZE);
-}
-
-static inline __be32 *
xdr_decode_fhandle(__be32 *p, struct nfs_fh *fhandle)
{
/* NFSv2 handles have a fixed length */
@@ -160,36 +153,6 @@ xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr)
return p;
}
-static inline __be32 *
-xdr_encode_sattr(__be32 *p, struct iattr *attr)
-{
- const __be32 not_set = __constant_htonl(0xFFFFFFFF);
-
- *p++ = (attr->ia_valid & ATTR_MODE) ? htonl(attr->ia_mode) : not_set;
- *p++ = (attr->ia_valid & ATTR_UID) ? htonl(attr->ia_uid) : not_set;
- *p++ = (attr->ia_valid & ATTR_GID) ? htonl(attr->ia_gid) : not_set;
- *p++ = (attr->ia_valid & ATTR_SIZE) ? htonl(attr->ia_size) : not_set;
-
- if (attr->ia_valid & ATTR_ATIME_SET) {
- p = xdr_encode_time(p, &attr->ia_atime);
- } else if (attr->ia_valid & ATTR_ATIME) {
- p = xdr_encode_current_server_time(p, &attr->ia_atime);
- } else {
- *p++ = not_set;
- *p++ = not_set;
- }
-
- if (attr->ia_valid & ATTR_MTIME_SET) {
- p = xdr_encode_time(p, &attr->ia_mtime);
- } else if (attr->ia_valid & ATTR_MTIME) {
- p = xdr_encode_current_server_time(p, &attr->ia_mtime);
- } else {
- *p++ = not_set;
- *p++ = not_set;
- }
- return p;
-}
-
/*
* Encode/decode NFSv2 basic data types
*
@@ -321,19 +284,11 @@ static void encode_diropargs(struct xdr_stream *xdr, const struct nfs_fh *fh,
/*
- * NFS encode functions
- */
-/*
- * Encode file handle argument
- * GETATTR, READLINK, STATFS
+ * NFSv2 XDR encode functions
+ *
+ * NFSv2 argument types are defined in section 2.2 of RFC 1094:
+ * "NFS: Network File System Protocol Specification".
*/
-static int
-nfs_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh)
-{
- p = xdr_encode_fhandle(p, fh);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
static int nfs2_xdr_enc_fhandle(struct rpc_rqst *req, __be32 *p,
const struct nfs_fh *fh)
@@ -346,18 +301,6 @@ static int nfs2_xdr_enc_fhandle(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode SETATTR arguments
- */
-static int
-nfs_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs_sattrargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_sattr(p, args->sattr);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 2.2.3. sattrargs
*
* struct sattrargs {
@@ -376,19 +319,6 @@ static int nfs2_xdr_enc_sattrargs(struct rpc_rqst *req, __be32 *p,
return 0;
}
-/*
- * Encode directory ops argument
- * LOOKUP, RMDIR
- */
-static int
-nfs_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs_diropargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
static int nfs2_xdr_enc_diropargs(struct rpc_rqst *req, __be32 *p,
const struct nfs_diropargs *args)
{
@@ -399,18 +329,6 @@ static int nfs2_xdr_enc_diropargs(struct rpc_rqst *req, __be32 *p,
return 0;
}
-/*
- * Encode REMOVE argument
- */
-static int
-nfs_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name.name, args->name.len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
static int nfs2_xdr_enc_readlinkargs(struct rpc_rqst *req, __be32 *p,
const struct nfs_readlinkargs *args)
{
@@ -424,33 +342,6 @@ static int nfs2_xdr_enc_readlinkargs(struct rpc_rqst *req, __be32 *p,
}
/*
- * Arguments to a READ call. Since we read data directly into the page
- * cache, we also set up the reply iovec here so that iov[1] points
- * exactly to the page we want to fetch.
- */
-static int
-nfs_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
-{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
- u32 offset = (u32)args->offset;
- u32 count = args->count;
-
- p = xdr_encode_fhandle(p, args->fh);
- *p++ = htonl(offset);
- *p++ = htonl(count);
- *p++ = htonl(count);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
-
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen,
- args->pages, args->pgbase, count);
- req->rq_rcv_buf.flags |= XDRBUF_READ;
- return 0;
-}
-
-/*
* 2.2.7. readargs
*
* struct readargs {
@@ -531,29 +422,6 @@ nfs_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
/*
- * Write arguments. Splice the buffer to be written into the iovec.
- */
-static int
-nfs_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
-{
- struct xdr_buf *sndbuf = &req->rq_snd_buf;
- u32 offset = (u32)args->offset;
- u32 count = args->count;
-
- p = xdr_encode_fhandle(p, args->fh);
- *p++ = htonl(offset);
- *p++ = htonl(offset);
- *p++ = htonl(count);
- *p++ = htonl(count);
- sndbuf->len = xdr_adjust_iovec(sndbuf->head, p);
-
- /* Copy the page array */
- xdr_encode_pages(sndbuf, args->pages, args->pgbase, count);
- sndbuf->flags |= XDRBUF_WRITE;
- return 0;
-}
-
-/*
* 2.2.9. writeargs
*
* struct writeargs {
@@ -595,20 +463,6 @@ static int nfs2_xdr_enc_writeargs(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode create arguments
- * CREATE, MKDIR
- */
-static int
-nfs_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs_createargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
- p = xdr_encode_sattr(p, args->sattr);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 2.2.10. createargs
*
* struct createargs {
@@ -638,20 +492,6 @@ static int nfs2_xdr_enc_removeargs(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode RENAME arguments
- */
-static int
-nfs_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs_renameargs *args)
-{
- p = xdr_encode_fhandle(p, args->old_dir);
- p = xdr_encode_array(p, args->old_name->name, args->old_name->len);
- p = xdr_encode_fhandle(p, args->new_dir);
- p = xdr_encode_array(p, args->new_name->name, args->new_name->len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 2.2.12. renameargs
*
* struct renameargs {
@@ -673,19 +513,6 @@ static int nfs2_xdr_enc_renameargs(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode LINK arguments
- */
-static int
-nfs_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs_linkargs *args)
-{
- p = xdr_encode_fhandle(p, args->fromfh);
- p = xdr_encode_fhandle(p, args->tofh);
- p = xdr_encode_array(p, args->toname, args->tolen);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 2.2.13. linkargs
*
* struct linkargs {
@@ -705,35 +532,6 @@ static int nfs2_xdr_enc_linkargs(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode SYMLINK arguments
- */
-static int
-nfs_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs_symlinkargs *args)
-{
- struct xdr_buf *sndbuf = &req->rq_snd_buf;
- size_t pad;
-
- p = xdr_encode_fhandle(p, args->fromfh);
- p = xdr_encode_array(p, args->fromname, args->fromlen);
- *p++ = htonl(args->pathlen);
- sndbuf->len = xdr_adjust_iovec(sndbuf->head, p);
-
- xdr_encode_pages(sndbuf, args->pages, 0, args->pathlen);
-
- /*
- * xdr_encode_pages may have added a few bytes to ensure the
- * pathname ends on a 4-byte boundary. Start encoding the
- * attributes after the pad bytes.
- */
- pad = sndbuf->tail->iov_len;
- if (pad > 0)
- p++;
- p = xdr_encode_sattr(p, args->sattr);
- sndbuf->len += xdr_adjust_iovec(sndbuf->tail, p) - pad;
- return 0;
-}
-
-/*
* 2.2.14. symlinkargs
*
* struct symlinkargs {
@@ -755,27 +553,6 @@ static int nfs2_xdr_enc_symlinkargs(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode arguments to readdir call
- */
-static int
-nfs_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs_readdirargs *args)
-{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
- u32 count = args->count;
-
- p = xdr_encode_fhandle(p, args->fh);
- *p++ = htonl(args->cookie);
- *p++ = htonl(count); /* see above */
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
-
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readdirres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count);
- return 0;
-}
-
-/*
* 2.2.17. readdirargs
*
* struct readdirargs {
@@ -948,24 +725,6 @@ nfs_xdr_diropres(struct rpc_rqst *req, __be32 *p, struct nfs_diropok *res)
}
/*
- * Encode READLINK args
- */
-static int
-nfs_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs_readlinkargs *args)
-{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
-
- p = xdr_encode_fhandle(p, args->fh);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
-
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readlinkres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen);
- return 0;
-}
-
-/*
* Decode READLINK reply
*/
static int
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 03/31] NFS: Update xdr_encode_foo() functions that we're keeping
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
2010-12-14 14:54 ` [PATCH 01/31] NFS: Introduce new-style XDR encoding functions for NFSv2 Chuck Lever
2010-12-14 14:54 ` [PATCH 02/31] NFS: Remove old NFSv2 encoder functions Chuck Lever
@ 2010-12-14 14:54 ` Chuck Lever
2010-12-14 14:55 ` [PATCH 04/31] NFS: Use the "nfs_stat" enum for nfs_stat_to_errno()'s argument Chuck Lever
` (28 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:54 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
The new helper functions are kept in order by section of RFC 1094.
Move the two timestamp encoders we're keeping, update their coding
style, and refresh their documenting comments.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs2xdr.c | 59 ++++++++++++++++++++++++++++++------------------------
1 files changed, 33 insertions(+), 26 deletions(-)
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index f5ea9dc..c799773 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -91,32 +91,6 @@ xdr_decode_fhandle(__be32 *p, struct nfs_fh *fhandle)
}
static inline __be32*
-xdr_encode_time(__be32 *p, const struct timespec *timep)
-{
- *p++ = htonl(timep->tv_sec);
- /* Convert nanoseconds into microseconds */
- *p++ = htonl(timep->tv_nsec ? timep->tv_nsec / 1000 : 0);
- return p;
-}
-
-static inline __be32*
-xdr_encode_current_server_time(__be32 *p, const struct timespec *timep)
-{
- /*
- * Passing the invalid value useconds=1000000 is a
- * Sun convention for "set to current server time".
- * It's needed to make permissions checks for the
- * "touch" program across v2 mounts to Solaris and
- * Irix boxes work correctly. See description of
- * sattr in section 6.1 of "NFS Illustrated" by
- * Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5
- */
- *p++ = htonl(timep->tv_sec);
- *p++ = htonl(1000000);
- return p;
-}
-
-static inline __be32*
xdr_decode_time(__be32 *p, struct timespec *timep)
{
timep->tv_sec = ntohl(*p++);
@@ -179,6 +153,39 @@ static void encode_fhandle(struct xdr_stream *xdr, const struct nfs_fh *fh)
}
/*
+ * 2.3.4. timeval
+ *
+ * struct timeval {
+ * unsigned int seconds;
+ * unsigned int useconds;
+ * };
+ */
+static __be32 *xdr_encode_time(__be32 *p, const struct timespec *timep)
+{
+ *p++ = cpu_to_be32(timep->tv_sec);
+ if (timep->tv_nsec != 0)
+ *p++ = cpu_to_be32(timep->tv_nsec / NSEC_PER_USEC);
+ else
+ *p++ = cpu_to_be32(0);
+ return p;
+}
+
+/*
+ * Passing the invalid value useconds=1000000 is a Sun convention for
+ * "set to current server time". It's needed to make permissions checks
+ * for the "touch" program across v2 mounts to Solaris and Irix servers
+ * work correctly. See description of sattr in section 6.1 of "NFS
+ * Illustrated" by Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5.
+ */
+static __be32 *xdr_encode_current_server_time(__be32 *p,
+ const struct timespec *timep)
+{
+ *p++ = cpu_to_be32(timep->tv_sec);
+ *p++ = cpu_to_be32(1000000);
+ return p;
+}
+
+/*
* 2.3.6. sattr
*
* struct sattr {
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 04/31] NFS: Use the "nfs_stat" enum for nfs_stat_to_errno()'s argument
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (2 preceding siblings ...)
2010-12-14 14:54 ` [PATCH 03/31] NFS: Update xdr_encode_foo() functions that we're keeping Chuck Lever
@ 2010-12-14 14:55 ` Chuck Lever
2010-12-14 14:55 ` [PATCH 05/31] NFS: Introduce new-style XDR decoding functions for NFSv2 Chuck Lever
` (27 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:55 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
To distinguish more clearly between the on-the-wire NFSERR_ value and
our local errno values, use the proper type for the argument of
nfs_stat_to_errno().
Add a documenting comment appropriate for a global function shared
outside this source file.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/internal.h | 2 +-
fs/nfs/nfs2xdr.c | 18 ++++++++++--------
2 files changed, 11 insertions(+), 9 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index b8db6f9..5532acb 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -185,7 +185,7 @@ extern int __init nfs_init_directcache(void);
extern void nfs_destroy_directcache(void);
/* nfs2xdr.c */
-extern int nfs_stat_to_errno(int);
+extern int nfs_stat_to_errno(enum nfs_stat);
extern struct rpc_procinfo nfs_procedures[];
extern __be32 *nfs_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index c799773..2da9824 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -804,7 +804,7 @@ nfs_xdr_statfsres(struct rpc_rqst *req, __be32 *p, struct nfs2_fsstat *res)
* We need to translate between nfs status return values and
* the local errno values which may not be the same.
*/
-static struct {
+static const struct {
int stat;
int errno;
} nfs_errtbl[] = {
@@ -844,20 +844,22 @@ static struct {
{ -1, -EIO }
};
-/*
- * Convert an NFS error code to a local one.
- * This one is used jointly by NFSv2 and NFSv3.
+/**
+ * nfs_stat_to_errno - convert an NFS status code to a local errno
+ * @status: NFS status code to convert
+ *
+ * Returns a local errno value, or -EIO if the NFS status code is
+ * not recognized. This function is used jointly by NFSv2 and NFSv3.
*/
-int
-nfs_stat_to_errno(int stat)
+int nfs_stat_to_errno(enum nfs_stat status)
{
int i;
for (i = 0; nfs_errtbl[i].stat != -1; i++) {
- if (nfs_errtbl[i].stat == stat)
+ if (nfs_errtbl[i].stat == (int)status)
return nfs_errtbl[i].errno;
}
- dprintk("nfs_stat_to_errno: bad nfs status return value: %d\n", stat);
+ dprintk("NFS: Unrecognized nfs status value: %u\n", status);
return nfs_errtbl[i].errno;
}
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 05/31] NFS: Introduce new-style XDR decoding functions for NFSv2
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (3 preceding siblings ...)
2010-12-14 14:55 ` [PATCH 04/31] NFS: Use the "nfs_stat" enum for nfs_stat_to_errno()'s argument Chuck Lever
@ 2010-12-14 14:55 ` Chuck Lever
2010-12-15 21:48 ` Trond Myklebust
2010-12-14 14:55 ` [PATCH 06/31] NFS: Replace old NFSv2 decoder functions with xdr_stream-based ones Chuck Lever
` (26 subsequent siblings)
31 siblings, 1 reply; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:55 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
We'd like to prevent local buffer overflows caused by malicious or
broken servers. New xdr_stream style decoders can do that.
For efficiency, we also eventually want to be able to pass xdr_streams
from call_decode() to all XDR decoding functions, rather than building
an xdr_stream in every XDR decoding function in the kernel.
nfs_decode_dirent() is renamed to follow the naming convention of the
other two dirent decoders.
Static helper functions are left without the "inline" directive. This
allows the compiler to choose automatically how to optimize these for
size or speed.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/internal.h | 2
fs/nfs/nfs2xdr.c | 564 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
fs/nfs/proc.c | 2
3 files changed, 558 insertions(+), 10 deletions(-)
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 5532acb..71b726c 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -187,7 +187,7 @@ extern void nfs_destroy_directcache(void);
/* nfs2xdr.c */
extern int nfs_stat_to_errno(enum nfs_stat);
extern struct rpc_procinfo nfs_procedures[];
-extern __be32 *nfs_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
+extern __be32 *nfs2_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
/* nfs3xdr.c */
extern struct rpc_procinfo nfs3_procedures[];
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 2da9824..827d1b8 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -77,6 +77,16 @@ static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages,
xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len);
}
+/*
+ * Handle decode buffer overflows out-of-line.
+ */
+static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
+{
+ dprintk("NFS: %s prematurely hit the end of our receive buffer. "
+ "Remaining buffer length is %tu words.\n",
+ func, xdr->end - xdr->p);
+}
+
/*
* Common NFS XDR functions as inlines
@@ -139,6 +149,74 @@ xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr)
*/
/*
+ * typedef opaque nfsdata<>;
+ */
+static int decode_nfsdata(struct xdr_stream *xdr, struct nfs_readres *result)
+{
+ u32 recvd, count;
+ size_t hdrlen;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ count = be32_to_cpup(p);
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+ recvd = xdr->buf->len - hdrlen;
+ if (unlikely(count > recvd))
+ goto out_cheating;
+out:
+ xdr_read_pages(xdr, count);
+ result->eof = 0; /* NFSv2 does not pass EOF flag on the wire. */
+ result->count = count;
+ return count;
+out_cheating:
+ dprintk("NFS: server cheating in read result: "
+ "count %u > recvd %u\n", count, recvd);
+ count = recvd;
+ goto out;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * enum stat {
+ * NFS_OK = 0,
+ * NFSERR_PERM = 1,
+ * NFSERR_NOENT = 2,
+ * NFSERR_IO = 5,
+ * NFSERR_NXIO = 6,
+ * NFSERR_ACCES = 13,
+ * NFSERR_EXIST = 17,
+ * NFSERR_NODEV = 19,
+ * NFSERR_NOTDIR = 20,
+ * NFSERR_ISDIR = 21,
+ * NFSERR_FBIG = 27,
+ * NFSERR_NOSPC = 28,
+ * NFSERR_ROFS = 30,
+ * NFSERR_NAMETOOLONG = 63,
+ * NFSERR_NOTEMPTY = 66,
+ * NFSERR_DQUOT = 69,
+ * NFSERR_STALE = 70,
+ * NFSERR_WFLUSH = 99
+ * };
+ */
+static int decode_stat(struct xdr_stream *xdr, enum nfs_stat *status)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ *status = be32_to_cpup(p);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
* 2.3.3. fhandle
*
* typedef opaque fhandle[FHSIZE];
@@ -152,6 +230,21 @@ static void encode_fhandle(struct xdr_stream *xdr, const struct nfs_fh *fh)
memcpy(p, fh->data, NFS2_FHSIZE);
}
+static int decode_fhandle(struct xdr_stream *xdr, struct nfs_fh *fh)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS2_FHSIZE);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ fh->size = NFS2_FHSIZE;
+ memcpy(fh->data, p, NFS2_FHSIZE);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
/*
* 2.3.4. timeval
*
@@ -186,6 +279,41 @@ static __be32 *xdr_encode_current_server_time(__be32 *p,
}
/*
+ * 2.3.5. fattr
+ *
+ * struct fattr {
+ * ftype type;
+ * unsigned int mode;
+ * unsigned int nlink;
+ * unsigned int uid;
+ * unsigned int gid;
+ * unsigned int size;
+ * unsigned int blocksize;
+ * unsigned int rdev;
+ * unsigned int blocks;
+ * unsigned int fsid;
+ * unsigned int fileid;
+ * timeval atime;
+ * timeval mtime;
+ * timeval ctime;
+ * };
+ *
+ */
+static int decode_fattr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS_fattr_sz << 2);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ xdr_decode_fattr(p, fattr);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
* 2.3.6. sattr
*
* struct sattr {
@@ -259,6 +387,32 @@ static void encode_filename(struct xdr_stream *xdr,
xdr_encode_opaque(p, name, length);
}
+static int decode_filename_inline(struct xdr_stream *xdr,
+ const char **name, u32 *length)
+{
+ __be32 *p;
+ u32 count;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ count = be32_to_cpup(p);
+ if (count > NFS3_MAXNAMLEN)
+ goto out_nametoolong;
+ p = xdr_inline_decode(xdr, count);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ *name = (const char *)p;
+ *length = count;
+ return 0;
+out_nametoolong:
+ dprintk("NFS: returned filename too long: %u\n", count);
+ return -ENAMETOOLONG;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
/*
* 2.3.8. path
*
@@ -274,6 +428,65 @@ static void encode_path(struct xdr_stream *xdr, struct page **pages, u32 length)
xdr_write_pages(xdr, pages, 0, length);
}
+static int decode_path(struct xdr_stream *xdr)
+{
+ u32 length, recvd;
+ size_t hdrlen;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ length = be32_to_cpup(p);
+ if (unlikely(length >= xdr->buf->page_len || length > NFS_MAXPATHLEN))
+ goto out_size;
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+ recvd = xdr->buf->len - hdrlen;
+ if (unlikely(length > recvd))
+ goto out_cheating;
+
+ xdr_read_pages(xdr, length);
+ xdr_terminate_string(xdr->buf, length);
+ return 0;
+out_size:
+ dprintk("NFS: returned pathname too long: %u\n", length);
+ return -ENAMETOOLONG;
+out_cheating:
+ dprintk("NFS: server cheating in pathname result: "
+ "length %u > received %u\n", length, recvd);
+ return -EIO;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * 2.3.9. attrstat
+ *
+ * union attrstat switch (stat status) {
+ * case NFS_OK:
+ * fattr attributes;
+ * default:
+ * void;
+ * };
+ */
+static int decode_attrstat(struct xdr_stream *xdr, struct nfs_fattr *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_stat(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+ error = decode_fattr(xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
+
/*
* 2.3.10. diropargs
*
@@ -289,6 +502,48 @@ static void encode_diropargs(struct xdr_stream *xdr, const struct nfs_fh *fh,
encode_filename(xdr, name, length);
}
+/*
+ * 2.3.11. diropres
+ *
+ * union diropres switch (stat status) {
+ * case NFS_OK:
+ * struct {
+ * fhandle file;
+ * fattr attributes;
+ * } diropok;
+ * default:
+ * void;
+ * };
+ */
+static int decode_diropok(struct xdr_stream *xdr, struct nfs_diropok *result)
+{
+ int error;
+
+ error = decode_fhandle(xdr, result->fh);
+ if (unlikely(error))
+ goto out;
+ error = decode_fattr(xdr, result->fattr);
+out:
+ return error;
+}
+
+static int decode_diropres(struct xdr_stream *xdr, struct nfs_diropok *result)
+{
+ enum nfs_stat status;
+ int error;
+
+ error = decode_stat(xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+ error = decode_diropok(xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
+
/*
* NFSv2 XDR encode functions
@@ -630,13 +885,6 @@ nfs_xdr_readdirres(struct rpc_rqst *req, __be32 *p, void *dummy)
return pglen;
}
-static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
-{
- dprintk("nfs: %s: prematurely hit end of receive buffer. "
- "Remaining buffer length is %tu words.\n",
- func, xdr->end - xdr->p);
-}
-
__be32 *
nfs_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_server *server, int plus)
{
@@ -700,6 +948,25 @@ nfs_xdr_stat(struct rpc_rqst *req, __be32 *p, void *dummy)
return status;
}
+static int nfs2_xdr_dec_stat(struct rpc_rqst *req, __be32 *p,
+ void *__unused)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_stat(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
+
/*
* Decode attrstat reply
* GETATTR, SETATTR, WRITE
@@ -715,6 +982,15 @@ nfs_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
return 0;
}
+static int nfs2_xdr_dec_attrstat(struct rpc_rqst *req, __be32 *p,
+ struct nfs_fattr *result)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ return decode_attrstat(&xdr, result);
+}
+
/*
* Decode diropres reply
* LOOKUP, CREATE, MKDIR
@@ -731,6 +1007,15 @@ nfs_xdr_diropres(struct rpc_rqst *req, __be32 *p, struct nfs_diropok *res)
return 0;
}
+static int nfs2_xdr_dec_diropres(struct rpc_rqst *req, __be32 *p,
+ struct nfs_diropok *result)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ return decode_diropres(&xdr, result);
+}
+
/*
* Decode READLINK reply
*/
@@ -772,6 +1057,70 @@ nfs_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, void *dummy)
}
/*
+ * 2.2.6. readlinkres
+ *
+ * union readlinkres switch (stat status) {
+ * case NFS_OK:
+ * path data;
+ * default:
+ * void;
+ * };
+ */
+static int nfs2_xdr_dec_readlinkres(struct rpc_rqst *req, __be32 *p,
+ void *__unused)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_stat(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+ error = decode_path(&xdr);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
+
+/*
+ * 2.2.7. readres
+ *
+ * union readres switch (stat status) {
+ * case NFS_OK:
+ * fattr attributes;
+ * nfsdata data;
+ * default:
+ * void;
+ * };
+ */
+static int nfs2_xdr_dec_readres(struct rpc_rqst *req, __be32 *p,
+ struct nfs_readres *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_stat(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+ error = decode_fattr(&xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ error = decode_nfsdata(&xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
+
+/*
* Decode WRITE reply
*/
static int
@@ -781,6 +1130,150 @@ nfs_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
return nfs_xdr_attrstat(req, p, res->fattr);
}
+static int nfs2_xdr_dec_writeres(struct rpc_rqst *req, __be32 *p,
+ struct nfs_writeres *result)
+{
+ struct xdr_stream xdr;
+
+ /* All NFSv2 writes are "file sync" writes */
+ result->verf->committed = NFS_FILE_SYNC;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ return decode_attrstat(&xdr, result->fattr);
+}
+
+/**
+ * nfs2_decode_dirent - Decode a single NFSv2 directory entry stored in
+ * the local page cache.
+ * @xdr: XDR stream where entry resides
+ * @entry: buffer to fill in with entry data
+ * @server: nfs_server data for this directory
+ * @plus: boolean indicating whether this should be a readdirplus entry
+ *
+ * Returns the position of the next item in the buffer, or an ERR_PTR.
+ *
+ * This function is not invoked during READDIR reply decoding, but
+ * rather whenever an application invokes the getdents(2) system call
+ * on a directory already in our cache.
+ *
+ * 2.2.17. entry
+ *
+ * struct entry {
+ * unsigned fileid;
+ * filename name;
+ * nfscookie cookie;
+ * entry *nextentry;
+ * };
+ */
+__be32 *nfs2_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
+ struct nfs_server *server, int plus)
+{
+ __be32 *p;
+ int error;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (*p++ == xdr_zero) {
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (*p++ == xdr_zero)
+ return ERR_PTR(-EAGAIN);
+ entry->eof = 1;
+ return ERR_PTR(-EBADCOOKIE);
+ }
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ entry->ino = be32_to_cpup(p);
+
+ error = decode_filename_inline(xdr, &entry->name, &entry->len);
+ if (unlikely(error))
+ return ERR_PTR(error);
+
+ /*
+ * The type (size and byte order) of nfscookie isn't defined in
+ * RFC 1094. This implementation assumes that it's an XDR uint32.
+ */
+ entry->prev_cookie = entry->cookie;
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ entry->cookie = be32_to_cpup(p);
+
+ entry->d_type = DT_UNKNOWN;
+
+ /* Peek at the next entry to see if we're at EOD */
+ p = xdr_inline_peek(xdr, 4 + 4);
+ entry->eof = 0;
+ if (p != NULL)
+ entry->eof = (p[0] == xdr_zero) && (p[1] != xdr_zero);
+ return p;
+
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return ERR_PTR(-EAGAIN);
+}
+
+/*
+ * 2.2.17. readdirres
+ *
+ * union readdirres switch (stat status) {
+ * case NFS_OK:
+ * struct {
+ * entry *entries;
+ * bool eof;
+ * } readdirok;
+ * default:
+ * void;
+ * };
+ *
+ * Read the directory contents into the page cache, but don't
+ * touch them. The actual decoding is done by nfs2_decode_dirent()
+ * during subsequent nfs_readdir() calls.
+ */
+static int decode_readdirok(struct xdr_stream *xdr)
+{
+ u32 recvd, pglen;
+ size_t hdrlen;
+
+ pglen = xdr->buf->page_len;
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+ recvd = xdr->buf->len - hdrlen;
+ if (unlikely(pglen > recvd))
+ goto out_cheating;
+out:
+ xdr_read_pages(xdr, pglen);
+ return pglen;
+out_cheating:
+ dprintk("NFS: server cheating in readdir result: "
+ "pglen %u > recvd %u\n", pglen, recvd);
+ pglen = recvd;
+ goto out;
+}
+
+static int nfs2_xdr_dec_readdirres(struct rpc_rqst *req, __be32 *p,
+ void *__unused)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_stat(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+ error = decode_readdirok(&xdr);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
+
/*
* Decode STATFS reply
*/
@@ -801,6 +1294,61 @@ nfs_xdr_statfsres(struct rpc_rqst *req, __be32 *p, struct nfs2_fsstat *res)
}
/*
+ * 2.2.18. statfsres
+ *
+ * union statfsres (stat status) {
+ * case NFS_OK:
+ * struct {
+ * unsigned tsize;
+ * unsigned bsize;
+ * unsigned blocks;
+ * unsigned bfree;
+ * unsigned bavail;
+ * } info;
+ * default:
+ * void;
+ * };
+ */
+static int decode_info(struct xdr_stream *xdr, struct nfs2_fsstat *result)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS_info_sz << 2);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ result->tsize = be32_to_cpup(p++);
+ result->bsize = be32_to_cpup(p++);
+ result->blocks = be32_to_cpup(p++);
+ result->bfree = be32_to_cpup(p++);
+ result->bavail = be32_to_cpup(p);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int nfs2_xdr_dec_statfsres(struct rpc_rqst *req, __be32 *p,
+ struct nfs2_fsstat *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_stat(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS_OK)
+ goto out_default;
+ error = decode_info(&xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
+
+
+/*
* We need to translate between nfs status return values and
* the local errno values which may not be the same.
*/
@@ -867,7 +1415,7 @@ int nfs_stat_to_errno(enum nfs_stat status)
[NFSPROC_##proc] = { \
.p_proc = NFSPROC_##proc, \
.p_encode = (kxdrproc_t)nfs2_xdr_enc_##argtype, \
- .p_decode = (kxdrproc_t) nfs_xdr_##restype, \
+ .p_decode = (kxdrproc_t)nfs2_xdr_dec_##restype, \
.p_arglen = NFS_##argtype##_sz, \
.p_replen = NFS_##restype##_sz, \
.p_timer = timer, \
diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index 58e7f84..00df605 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -731,7 +731,7 @@ const struct nfs_rpc_ops nfs_v2_clientops = {
.statfs = nfs_proc_statfs,
.fsinfo = nfs_proc_fsinfo,
.pathconf = nfs_proc_pathconf,
- .decode_dirent = nfs_decode_dirent,
+ .decode_dirent = nfs2_decode_dirent,
.read_setup = nfs_proc_read_setup,
.read_done = nfs_read_done,
.write_setup = nfs_proc_write_setup,
^ permalink raw reply related [flat|nested] 53+ messages in thread* Re: [PATCH 05/31] NFS: Introduce new-style XDR decoding functions for NFSv2
2010-12-14 14:55 ` [PATCH 05/31] NFS: Introduce new-style XDR decoding functions for NFSv2 Chuck Lever
@ 2010-12-15 21:48 ` Trond Myklebust
2010-12-15 21:53 ` Trond Myklebust
0 siblings, 1 reply; 53+ messages in thread
From: Trond Myklebust @ 2010-12-15 21:48 UTC (permalink / raw)
To: Chuck Lever; +Cc: linux-nfs
On Tue, 2010-12-14 at 09:55 -0500, Chuck Lever wrote:
> We'd like to prevent local buffer overflows caused by malicious or
> broken servers. New xdr_stream style decoders can do that.
>
> For efficiency, we also eventually want to be able to pass xdr_streams
> from call_decode() to all XDR decoding functions, rather than building
> an xdr_stream in every XDR decoding function in the kernel.
>
> nfs_decode_dirent() is renamed to follow the naming convention of the
> other two dirent decoders.
>
> Static helper functions are left without the "inline" directive. This
> allows the compiler to choose automatically how to optimize these for
> size or speed.
>
> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
> Tested-by: J. Bruce Fields <bfields@redhat.com>
error: patch failed: fs/nfs/nfs2xdr.c:630
error: fs/nfs/nfs2xdr.c: patch does not apply
--
Trond Myklebust
Linux NFS client maintainer
NetApp
Trond.Myklebust@netapp.com
www.netapp.com
^ permalink raw reply [flat|nested] 53+ messages in thread
* Re: [PATCH 05/31] NFS: Introduce new-style XDR decoding functions for NFSv2
2010-12-15 21:48 ` Trond Myklebust
@ 2010-12-15 21:53 ` Trond Myklebust
0 siblings, 0 replies; 53+ messages in thread
From: Trond Myklebust @ 2010-12-15 21:53 UTC (permalink / raw)
To: Chuck Lever; +Cc: linux-nfs
On Wed, 2010-12-15 at 16:48 -0500, Trond Myklebust wrote:
> On Tue, 2010-12-14 at 09:55 -0500, Chuck Lever wrote:
> > We'd like to prevent local buffer overflows caused by malicious or
> > broken servers. New xdr_stream style decoders can do that.
> >
> > For efficiency, we also eventually want to be able to pass xdr_streams
> > from call_decode() to all XDR decoding functions, rather than building
> > an xdr_stream in every XDR decoding function in the kernel.
> >
> > nfs_decode_dirent() is renamed to follow the naming convention of the
> > other two dirent decoders.
> >
> > Static helper functions are left without the "inline" directive. This
> > allows the compiler to choose automatically how to optimize these for
> > size or speed.
> >
> > Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
> > Tested-by: J. Bruce Fields <bfields@redhat.com>
>
> error: patch failed: fs/nfs/nfs2xdr.c:630
> error: fs/nfs/nfs2xdr.c: patch does not apply
>
>
Never mind. That looks like it might be something I introduced.
--
Trond Myklebust
Linux NFS client maintainer
NetApp
Trond.Myklebust@netapp.com
www.netapp.com
^ permalink raw reply [flat|nested] 53+ messages in thread
* [PATCH 06/31] NFS: Replace old NFSv2 decoder functions with xdr_stream-based ones
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (4 preceding siblings ...)
2010-12-14 14:55 ` [PATCH 05/31] NFS: Introduce new-style XDR decoding functions for NFSv2 Chuck Lever
@ 2010-12-14 14:55 ` Chuck Lever
2010-12-14 14:55 ` [PATCH 07/31] NFS: Move and update xdr_decode_foo() functions that we're keeping Chuck Lever
` (25 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:55 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up. Remove unused legacy result decoder functions, and any
now unused decoder helper functions.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs2xdr.c | 253 +-----------------------------------------------------
1 files changed, 4 insertions(+), 249 deletions(-)
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 827d1b8..ae75116 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -91,15 +91,6 @@ static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
/*
* Common NFS XDR functions as inlines
*/
-static inline __be32 *
-xdr_decode_fhandle(__be32 *p, struct nfs_fh *fhandle)
-{
- /* NFSv2 handles have a fixed length */
- fhandle->size = NFS2_FHSIZE;
- memcpy(fhandle->data, p, NFS2_FHSIZE);
- return p + XDR_QUADLEN(NFS2_FHSIZE);
-}
-
static inline __be32*
xdr_decode_time(__be32 *p, struct timespec *timep)
{
@@ -642,48 +633,6 @@ static int nfs2_xdr_enc_readargs(struct rpc_rqst *req, __be32 *p,
}
/*
- * Decode READ reply
- */
-static int
-nfs_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
-{
- struct kvec *iov = req->rq_rcv_buf.head;
- size_t hdrlen;
- u32 count, recvd;
- int status;
-
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
- p = xdr_decode_fattr(p, res->fattr);
-
- count = ntohl(*p++);
- res->eof = 0;
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
- if (iov->iov_len < hdrlen) {
- dprintk("NFS: READ reply header overflowed:"
- "length %Zu > %Zu\n", hdrlen, iov->iov_len);
- return -errno_NFSERR_IO;
- } else if (iov->iov_len != hdrlen) {
- dprintk("NFS: READ header is short. iovec will be shifted.\n");
- xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen);
- }
-
- recvd = req->rq_rcv_buf.len - hdrlen;
- if (count > recvd) {
- dprintk("NFS: server cheating in read reply: "
- "count %u > recvd %u\n", count, recvd);
- count = recvd;
- }
-
- dprintk("RPC: readres OK count %u\n", count);
- if (count < res->count)
- res->count = count;
-
- return count;
-}
-
-
-/*
* 2.2.9. writeargs
*
* struct writeargs {
@@ -848,105 +797,11 @@ static int nfs2_xdr_enc_readdirargs(struct rpc_rqst *req, __be32 *p,
}
/*
- * Decode the result of a readdir call.
- * We're not really decoding anymore, we just leave the buffer untouched
- * and only check that it is syntactically correct.
- * The real decoding happens in nfs_decode_entry below, called directly
- * from nfs_readdir for each entry.
- */
-static int
-nfs_xdr_readdirres(struct rpc_rqst *req, __be32 *p, void *dummy)
-{
- struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
- struct kvec *iov = rcvbuf->head;
- struct page **page;
- size_t hdrlen;
- unsigned int pglen, recvd;
- int status;
-
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
-
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
- if (iov->iov_len < hdrlen) {
- dprintk("NFS: READDIR reply header overflowed:"
- "length %Zu > %Zu\n", hdrlen, iov->iov_len);
- return -errno_NFSERR_IO;
- } else if (iov->iov_len != hdrlen) {
- dprintk("NFS: READDIR header is short. iovec will be shifted.\n");
- xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
- }
-
- pglen = rcvbuf->page_len;
- recvd = rcvbuf->len - hdrlen;
- if (pglen > recvd)
- pglen = recvd;
- page = rcvbuf->pages;
- return pglen;
-}
-
-__be32 *
-nfs_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_server *server, int plus)
-{
- __be32 *p;
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
- goto out_overflow;
- if (!ntohl(*p++)) {
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
- goto out_overflow;
- if (!ntohl(*p++))
- return ERR_PTR(-EAGAIN);
- entry->eof = 1;
- return ERR_PTR(-EBADCOOKIE);
- }
-
- p = xdr_inline_decode(xdr, 8);
- if (unlikely(!p))
- goto out_overflow;
-
- entry->ino = ntohl(*p++);
- entry->len = ntohl(*p++);
-
- p = xdr_inline_decode(xdr, entry->len + 4);
- if (unlikely(!p))
- goto out_overflow;
- entry->name = (const char *) p;
- p += XDR_QUADLEN(entry->len);
- entry->prev_cookie = entry->cookie;
- entry->cookie = ntohl(*p++);
-
- entry->d_type = DT_UNKNOWN;
-
- p = xdr_inline_peek(xdr, 8);
- if (p != NULL)
- entry->eof = !p[0] && p[1];
- else
- entry->eof = 0;
-
- return p;
-
-out_overflow:
- print_overflow_msg(__func__, xdr);
- return ERR_PTR(-EAGAIN);
-}
-
-/*
- * NFS XDR decode functions
- */
-/*
- * Decode simple status reply
+ * NFSv2 XDR decode functions
+ *
+ * NFSv2 result types are defined in section 2.2 of RFC 1094:
+ * "NFS: Network File System Protocol Specification".
*/
-static int
-nfs_xdr_stat(struct rpc_rqst *req, __be32 *p, void *dummy)
-{
- int status;
-
- if ((status = ntohl(*p++)) != 0)
- status = nfs_stat_to_errno(status);
- return status;
-}
static int nfs2_xdr_dec_stat(struct rpc_rqst *req, __be32 *p,
void *__unused)
@@ -967,21 +822,6 @@ out_default:
return nfs_stat_to_errno(status);
}
-/*
- * Decode attrstat reply
- * GETATTR, SETATTR, WRITE
- */
-static int
-nfs_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
-{
- int status;
-
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
- xdr_decode_fattr(p, fattr);
- return 0;
-}
-
static int nfs2_xdr_dec_attrstat(struct rpc_rqst *req, __be32 *p,
struct nfs_fattr *result)
{
@@ -991,22 +831,6 @@ static int nfs2_xdr_dec_attrstat(struct rpc_rqst *req, __be32 *p,
return decode_attrstat(&xdr, result);
}
-/*
- * Decode diropres reply
- * LOOKUP, CREATE, MKDIR
- */
-static int
-nfs_xdr_diropres(struct rpc_rqst *req, __be32 *p, struct nfs_diropok *res)
-{
- int status;
-
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
- p = xdr_decode_fhandle(p, res->fh);
- xdr_decode_fattr(p, res->fattr);
- return 0;
-}
-
static int nfs2_xdr_dec_diropres(struct rpc_rqst *req, __be32 *p,
struct nfs_diropok *result)
{
@@ -1017,46 +841,6 @@ static int nfs2_xdr_dec_diropres(struct rpc_rqst *req, __be32 *p,
}
/*
- * Decode READLINK reply
- */
-static int
-nfs_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, void *dummy)
-{
- struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
- struct kvec *iov = rcvbuf->head;
- size_t hdrlen;
- u32 len, recvd;
- int status;
-
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
- /* Convert length of symlink */
- len = ntohl(*p++);
- if (len >= rcvbuf->page_len) {
- dprintk("nfs: server returned giant symlink!\n");
- return -ENAMETOOLONG;
- }
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
- if (iov->iov_len < hdrlen) {
- dprintk("NFS: READLINK reply header overflowed:"
- "length %Zu > %Zu\n", hdrlen, iov->iov_len);
- return -errno_NFSERR_IO;
- } else if (iov->iov_len != hdrlen) {
- dprintk("NFS: READLINK header is short. iovec will be shifted.\n");
- xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
- }
- recvd = req->rq_rcv_buf.len - hdrlen;
- if (recvd < len) {
- dprintk("NFS: server cheating in readlink reply: "
- "count %u > recvd %u\n", len, recvd);
- return -EIO;
- }
-
- xdr_terminate_string(rcvbuf, len);
- return 0;
-}
-
-/*
* 2.2.6. readlinkres
*
* union readlinkres switch (stat status) {
@@ -1120,16 +904,6 @@ out_default:
return nfs_stat_to_errno(status);
}
-/*
- * Decode WRITE reply
- */
-static int
-nfs_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
-{
- res->verf->committed = NFS_FILE_SYNC;
- return nfs_xdr_attrstat(req, p, res->fattr);
-}
-
static int nfs2_xdr_dec_writeres(struct rpc_rqst *req, __be32 *p,
struct nfs_writeres *result)
{
@@ -1275,25 +1049,6 @@ out_default:
}
/*
- * Decode STATFS reply
- */
-static int
-nfs_xdr_statfsres(struct rpc_rqst *req, __be32 *p, struct nfs2_fsstat *res)
-{
- int status;
-
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
-
- res->tsize = ntohl(*p++);
- res->bsize = ntohl(*p++);
- res->blocks = ntohl(*p++);
- res->bfree = ntohl(*p++);
- res->bavail = ntohl(*p++);
- return 0;
-}
-
-/*
* 2.2.18. statfsres
*
* union statfsres (stat status) {
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 07/31] NFS: Move and update xdr_decode_foo() functions that we're keeping
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (5 preceding siblings ...)
2010-12-14 14:55 ` [PATCH 06/31] NFS: Replace old NFSv2 decoder functions with xdr_stream-based ones Chuck Lever
@ 2010-12-14 14:55 ` Chuck Lever
2010-12-14 14:55 ` [PATCH 08/31] lockd: Introduce new-style XDR functions for NLMv3 Chuck Lever
` (24 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:55 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
Move the timestamp decoder to match the placement and naming
conventions of the other helpers. Fold xdr_decode_fattr() into
decode_fattr(), which is now it's only user.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs2xdr.c | 97 +++++++++++++++++++++++++++++++-----------------------
1 files changed, 56 insertions(+), 41 deletions(-)
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index ae75116..70df08a 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -89,46 +89,6 @@ static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
/*
- * Common NFS XDR functions as inlines
- */
-static inline __be32*
-xdr_decode_time(__be32 *p, struct timespec *timep)
-{
- timep->tv_sec = ntohl(*p++);
- /* Convert microseconds into nanoseconds */
- timep->tv_nsec = ntohl(*p++) * 1000;
- return p;
-}
-
-static __be32 *
-xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr)
-{
- u32 rdev, type;
- type = ntohl(*p++);
- fattr->mode = ntohl(*p++);
- fattr->nlink = ntohl(*p++);
- fattr->uid = ntohl(*p++);
- fattr->gid = ntohl(*p++);
- fattr->size = ntohl(*p++);
- fattr->du.nfs2.blocksize = ntohl(*p++);
- rdev = ntohl(*p++);
- fattr->du.nfs2.blocks = ntohl(*p++);
- fattr->fsid.major = ntohl(*p++);
- fattr->fsid.minor = 0;
- fattr->fileid = ntohl(*p++);
- p = xdr_decode_time(p, &fattr->atime);
- p = xdr_decode_time(p, &fattr->mtime);
- p = xdr_decode_time(p, &fattr->ctime);
- fattr->valid |= NFS_ATTR_FATTR_V2;
- fattr->rdev = new_decode_dev(rdev);
- if (type == NFCHR && rdev == NFS2_FIFO_DEV) {
- fattr->mode = (fattr->mode & ~S_IFMT) | S_IFIFO;
- fattr->rdev = 0;
- }
- return p;
-}
-
-/*
* Encode/decode NFSv2 basic data types
*
* Basic NFSv2 data types are defined in section 2.3 of RFC 1094:
@@ -208,6 +168,27 @@ out_overflow:
}
/*
+ * 2.3.2. ftype
+ *
+ * enum ftype {
+ * NFNON = 0,
+ * NFREG = 1,
+ * NFDIR = 2,
+ * NFBLK = 3,
+ * NFCHR = 4,
+ * NFLNK = 5
+ * };
+ *
+ */
+static __be32 *xdr_decode_ftype(__be32 *p, u32 *type)
+{
+ *type = be32_to_cpup(p++);
+ if (unlikely(*type > NF2FIFO))
+ *type = NFBAD;
+ return p;
+}
+
+/*
* 2.3.3. fhandle
*
* typedef opaque fhandle[FHSIZE];
@@ -269,6 +250,13 @@ static __be32 *xdr_encode_current_server_time(__be32 *p,
return p;
}
+static __be32 *xdr_decode_time(__be32 *p, struct timespec *timep)
+{
+ timep->tv_sec = be32_to_cpup(p++);
+ timep->tv_nsec = be32_to_cpup(p++) * NSEC_PER_USEC;
+ return p;
+}
+
/*
* 2.3.5. fattr
*
@@ -292,12 +280,39 @@ static __be32 *xdr_encode_current_server_time(__be32 *p,
*/
static int decode_fattr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
{
+ u32 rdev, type;
__be32 *p;
p = xdr_inline_decode(xdr, NFS_fattr_sz << 2);
if (unlikely(p == NULL))
goto out_overflow;
- xdr_decode_fattr(p, fattr);
+
+ fattr->valid |= NFS_ATTR_FATTR_V2;
+
+ p = xdr_decode_ftype(p, &type);
+
+ fattr->mode = be32_to_cpup(p++);
+ fattr->nlink = be32_to_cpup(p++);
+ fattr->uid = be32_to_cpup(p++);
+ fattr->gid = be32_to_cpup(p++);
+ fattr->size = be32_to_cpup(p++);
+ fattr->du.nfs2.blocksize = be32_to_cpup(p++);
+
+ rdev = be32_to_cpup(p++);
+ fattr->rdev = new_decode_dev(rdev);
+ if (type == (u32)NFCHR && rdev == (u32)NFS2_FIFO_DEV) {
+ fattr->mode = (fattr->mode & ~S_IFMT) | S_IFIFO;
+ fattr->rdev = 0;
+ }
+
+ fattr->du.nfs2.blocks = be32_to_cpup(p++);
+ fattr->fsid.major = be32_to_cpup(p++);
+ fattr->fsid.minor = 0;
+ fattr->fileid = be32_to_cpup(p++);
+
+ p = xdr_decode_time(p, &fattr->atime);
+ p = xdr_decode_time(p, &fattr->mtime);
+ xdr_decode_time(p, &fattr->ctime);
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 08/31] lockd: Introduce new-style XDR functions for NLMv3
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (6 preceding siblings ...)
2010-12-14 14:55 ` [PATCH 07/31] NFS: Move and update xdr_decode_foo() functions that we're keeping Chuck Lever
@ 2010-12-14 14:55 ` Chuck Lever
2010-12-14 14:55 ` [PATCH 09/31] NFS: Introduce new-style XDR encoding functions for NFSv3 Chuck Lever
` (23 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:55 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
We'd like to prevent local buffer overflows caused by malicious or
broken servers. New xdr_stream style decoders can do that.
For efficiency, we also eventually want to be able to pass xdr_streams
from call_encode() and call_decode() to all XDR encoding functions,
rather than building an xdr_stream in every XDR encoding and decoding
function in the kernel.
To do all of this, rewrite the XDR encoding and decoding functions in
fs/lockd/xdr.c to use xdr_streams. This makes them more or less
incompatible with server-side XDR helper functions, so break them out
into a separate source file.
Static helper functions are left without the "inline" directive. This
allows the compiler to choose automatically how to optimize these for
size or speed.
SHARE-related functionality doesn't seem to be used, as those
functions are hiding behind a #define that isn't set anywhere that I
can find. And, they've been in there forever (at least as far back as
the kernel's git history goes), yet remain unused. Let's take the
opportunity to bin them. It should be easy enough for someone to
introduce proper XDR functions if at some point SHARE-related NLM
functionality is desired.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/lockd/Makefile | 4
fs/lockd/clntxdr.c | 643 ++++++++++++++++++++++++++++++++++++++++++++++++++++
fs/lockd/xdr.c | 258 ---------------------
3 files changed, 645 insertions(+), 260 deletions(-)
create mode 100644 fs/lockd/clntxdr.c
diff --git a/fs/lockd/Makefile b/fs/lockd/Makefile
index cd123e0..e2e973f 100644
--- a/fs/lockd/Makefile
+++ b/fs/lockd/Makefile
@@ -7,7 +7,7 @@ EXTRA_CFLAGS = -W -Wall -Wextra -Wsign-compare \
obj-$(CONFIG_LOCKD) += lockd.o
-lockd-objs-y := clntlock.o clntproc.o host.o svc.o svclock.o svcshare.o \
- svcproc.o svcsubs.o mon.o xdr.o grace.o
+lockd-objs-y := clntlock.o clntproc.o clntxdr.o host.o svc.o svclock.o \
+ svcshare.o svcproc.o svcsubs.o mon.o xdr.o grace.o
lockd-objs-$(CONFIG_LOCKD_V4) += xdr4.o svc4proc.o
lockd-objs := $(lockd-objs-y)
diff --git a/fs/lockd/clntxdr.c b/fs/lockd/clntxdr.c
new file mode 100644
index 0000000..0472f2a
--- /dev/null
+++ b/fs/lockd/clntxdr.c
@@ -0,0 +1,643 @@
+/*
+ * linux/fs/lockd/clntxdr.c
+ *
+ * XDR functions to encode/decode NLM version 3 RPC arguments and results.
+ * NLM version 3 is backwards compatible with NLM versions 1 and 2.
+ *
+ * NLM client-side only.
+ *
+ * Copyright (C) 2010, Oracle. All rights reserved.
+ */
+
+#include <linux/types.h>
+#include <linux/sunrpc/xdr.h>
+#include <linux/sunrpc/clnt.h>
+#include <linux/sunrpc/stats.h>
+#include <linux/lockd/lockd.h>
+
+#define NLMDBG_FACILITY NLMDBG_XDR
+
+#if (NLMCLNT_OHSIZE > XDR_MAX_NETOBJ)
+# error "NLM host name cannot be larger than XDR_MAX_NETOBJ!"
+#endif
+
+/*
+ * Declare the space requirements for NLM arguments and replies as
+ * number of 32bit-words
+ */
+#define NLM_cookie_sz (1+(NLM_MAXCOOKIELEN>>2))
+#define NLM_caller_sz (1+(NLMCLNT_OHSIZE>>2))
+#define NLM_owner_sz (1+(NLMCLNT_OHSIZE>>2))
+#define NLM_fhandle_sz (1+(NFS2_FHSIZE>>2))
+#define NLM_lock_sz (3+NLM_caller_sz+NLM_owner_sz+NLM_fhandle_sz)
+#define NLM_holder_sz (4+NLM_owner_sz)
+
+#define NLM_testargs_sz (NLM_cookie_sz+1+NLM_lock_sz)
+#define NLM_lockargs_sz (NLM_cookie_sz+4+NLM_lock_sz)
+#define NLM_cancargs_sz (NLM_cookie_sz+2+NLM_lock_sz)
+#define NLM_unlockargs_sz (NLM_cookie_sz+NLM_lock_sz)
+
+#define NLM_testres_sz (NLM_cookie_sz+1+NLM_holder_sz)
+#define NLM_res_sz (NLM_cookie_sz+1)
+#define NLM_norep_sz (0)
+
+
+static s32 loff_t_to_s32(loff_t offset)
+{
+ s32 res;
+
+ if (offset >= NLM_OFFSET_MAX)
+ res = NLM_OFFSET_MAX;
+ else if (offset <= -NLM_OFFSET_MAX)
+ res = -NLM_OFFSET_MAX;
+ else
+ res = offset;
+ return res;
+}
+
+static void nlm_compute_offsets(const struct nlm_lock *lock,
+ u32 *l_offset, u32 *l_len)
+{
+ const struct file_lock *fl = &lock->fl;
+
+ BUG_ON(fl->fl_start > NLM_OFFSET_MAX);
+ BUG_ON(fl->fl_end > NLM_OFFSET_MAX &&
+ fl->fl_end != OFFSET_MAX);
+
+ *l_offset = loff_t_to_s32(fl->fl_start);
+ if (fl->fl_end == OFFSET_MAX)
+ *l_len = 0;
+ else
+ *l_len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1);
+}
+
+/*
+ * Handle decode buffer overflows out-of-line.
+ */
+static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
+{
+ dprintk("lockd: %s prematurely hit the end of our receive buffer. "
+ "Remaining buffer length is %tu words.\n",
+ func, xdr->end - xdr->p);
+}
+
+
+/*
+ * Encode/decode NLMv3 basic data types
+ *
+ * Basic NLMv3 data types are not defined in an IETF standards
+ * document. X/Open has a description of these data types that
+ * is useful. See Chapter 10 of "Protocols for Interworking:
+ * XNFS, Version 3W".
+ *
+ * Not all basic data types have their own encoding and decoding
+ * functions. For run-time efficiency, some data types are encoded
+ * or decoded inline.
+ */
+
+static void encode_bool(struct xdr_stream *xdr, const int value)
+{
+ __be32 *p;
+
+ p = xdr_reserve_space(xdr, 4);
+ *p = value ? xdr_one : xdr_zero;
+}
+
+static void encode_int32(struct xdr_stream *xdr, const s32 value)
+{
+ __be32 *p;
+
+ p = xdr_reserve_space(xdr, 4);
+ *p = cpu_to_be32(value);
+}
+
+/*
+ * typedef opaque netobj<MAXNETOBJ_SZ>
+ */
+static void encode_netobj(struct xdr_stream *xdr,
+ const u8 *data, const unsigned int length)
+{
+ __be32 *p;
+
+ BUG_ON(length > XDR_MAX_NETOBJ);
+ p = xdr_reserve_space(xdr, 4 + length);
+ xdr_encode_opaque(p, data, length);
+}
+
+static int decode_netobj(struct xdr_stream *xdr,
+ struct xdr_netobj *obj)
+{
+ u32 length;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ length = be32_to_cpup(p++);
+ if (unlikely(length > XDR_MAX_NETOBJ))
+ goto out_size;
+ obj->len = length;
+ obj->data = (u8 *)p;
+ return 0;
+out_size:
+ dprintk("NFS: returned netobj was too long: %u\n", length);
+ return -EIO;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * netobj cookie;
+ */
+static void encode_cookie(struct xdr_stream *xdr,
+ const struct nlm_cookie *cookie)
+{
+ BUG_ON(cookie->len > NLM_MAXCOOKIELEN);
+ encode_netobj(xdr, (u8 *)&cookie->data, cookie->len);
+}
+
+static int decode_cookie(struct xdr_stream *xdr,
+ struct nlm_cookie *cookie)
+{
+ u32 length;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ length = be32_to_cpup(p++);
+ /* apparently HPUX can return empty cookies */
+ if (length == 0)
+ goto out_hpux;
+ if (length > NLM_MAXCOOKIELEN)
+ goto out_size;
+ p = xdr_inline_decode(xdr, length);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ cookie->len = length;
+ memcpy(cookie->data, p, length);
+ return 0;
+out_hpux:
+ cookie->len = 4;
+ memset(cookie->data, 0, 4);
+ return 0;
+out_size:
+ dprintk("NFS: returned cookie was too long: %u\n", length);
+ return -EIO;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * netobj fh;
+ */
+static void encode_fh(struct xdr_stream *xdr, const struct nfs_fh *fh)
+{
+ BUG_ON(fh->size != NFS2_FHSIZE);
+ encode_netobj(xdr, (u8 *)&fh->data, NFS2_FHSIZE);
+}
+
+/*
+ * enum nlm_stats {
+ * LCK_GRANTED = 0,
+ * LCK_DENIED = 1,
+ * LCK_DENIED_NOLOCKS = 2,
+ * LCK_BLOCKED = 3,
+ * LCK_DENIED_GRACE_PERIOD = 4
+ * };
+ *
+ *
+ * struct nlm_stat {
+ * nlm_stats stat;
+ * };
+ *
+ * NB: we don't swap bytes for the NLM status values. The upper
+ * layers deal directly with the status value in network byte
+ * order.
+ */
+
+static void encode_nlm_stat(struct xdr_stream *xdr,
+ const __be32 stat)
+{
+ __be32 *p;
+
+ BUG_ON(be32_to_cpu(stat) > NLM_LCK_DENIED_GRACE_PERIOD);
+ p = xdr_reserve_space(xdr, 4);
+ *p = stat;
+}
+
+static int decode_nlm_stat(struct xdr_stream *xdr,
+ __be32 *stat)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (unlikely(*p > nlm_lck_denied_grace_period))
+ goto out_enum;
+ *stat = *p;
+ return 0;
+out_enum:
+ dprintk("%s: server returned invalid nlm_stats value: %u\n",
+ __func__, be32_to_cpup(p));
+ return -EIO;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * struct nlm_holder {
+ * bool exclusive;
+ * int uppid;
+ * netobj oh;
+ * unsigned l_offset;
+ * unsigned l_len;
+ * };
+ */
+static void encode_nlm_holder(struct xdr_stream *xdr,
+ const struct nlm_res *result)
+{
+ const struct nlm_lock *lock = &result->lock;
+ u32 l_offset, l_len;
+ __be32 *p;
+
+ encode_bool(xdr, lock->fl.fl_type == F_RDLCK);
+ encode_int32(xdr, lock->svid);
+ encode_netobj(xdr, lock->oh.data, lock->oh.len);
+
+ p = xdr_reserve_space(xdr, 4 + 4);
+ nlm_compute_offsets(lock, &l_offset, &l_len);
+ *p++ = cpu_to_be32(l_offset);
+ *p = cpu_to_be32(l_len);
+}
+
+static int decode_nlm_holder(struct xdr_stream *xdr, struct nlm_res *result)
+{
+ struct nlm_lock *lock = &result->lock;
+ struct file_lock *fl = &lock->fl;
+ u32 exclusive, l_offset, l_len;
+ int error;
+ __be32 *p;
+ s32 end;
+
+ memset(lock, 0, sizeof(*lock));
+ locks_init_lock(fl);
+
+ p = xdr_inline_decode(xdr, 4 + 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ exclusive = be32_to_cpup(p++);
+ lock->svid = be32_to_cpup(p);
+ fl->fl_pid = (pid_t)lock->svid;
+
+ error = decode_netobj(xdr, &lock->oh);
+ if (unlikely(error))
+ goto out;
+
+ p = xdr_inline_decode(xdr, 4 + 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+
+ fl->fl_flags = FL_POSIX;
+ fl->fl_type = exclusive != 0 ? F_WRLCK : F_RDLCK;
+ l_offset = be32_to_cpup(p++);
+ l_len = be32_to_cpup(p);
+ end = l_offset + l_len - 1;
+
+ fl->fl_start = (loff_t)l_offset;
+ if (l_len == 0 || end < 0)
+ fl->fl_end = OFFSET_MAX;
+ else
+ fl->fl_end = (loff_t)end;
+ error = 0;
+out:
+ return error;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * string caller_name<LM_MAXSTRLEN>;
+ */
+static void encode_caller_name(struct xdr_stream *xdr, const char *name)
+{
+ /* NB: client-side does not set lock->len */
+ u32 length = strlen(name);
+ __be32 *p;
+
+ BUG_ON(length > NLM_MAXSTRLEN);
+ p = xdr_reserve_space(xdr, 4 + length);
+ xdr_encode_opaque(p, name, length);
+}
+
+/*
+ * struct nlm_lock {
+ * string caller_name<LM_MAXSTRLEN>;
+ * netobj fh;
+ * netobj oh;
+ * int uppid;
+ * unsigned l_offset;
+ * unsigned l_len;
+ * };
+ */
+static void encode_nlm_lock(struct xdr_stream *xdr,
+ const struct nlm_lock *lock)
+{
+ u32 l_offset, l_len;
+ __be32 *p;
+
+ encode_caller_name(xdr, lock->caller);
+ encode_fh(xdr, &lock->fh);
+ encode_netobj(xdr, lock->oh.data, lock->oh.len);
+
+ p = xdr_reserve_space(xdr, 4 + 4 + 4);
+ *p++ = cpu_to_be32(lock->svid);
+
+ nlm_compute_offsets(lock, &l_offset, &l_len);
+ *p++ = cpu_to_be32(l_offset);
+ *p = cpu_to_be32(l_len);
+}
+
+
+/*
+ * NLMv3 XDR encode functions
+ *
+ * NLMv3 argument types are defined in Chapter 10 of The Open Group's
+ * "Protocols for Interworking: XNFS, Version 3W".
+ */
+
+/*
+ * struct nlm_testargs {
+ * netobj cookie;
+ * bool exclusive;
+ * struct nlm_lock alock;
+ * };
+ */
+static int nlm_xdr_enc_testargs(struct rpc_rqst *req, __be32 *p,
+ const struct nlm_args *args)
+{
+ const struct nlm_lock *lock = &args->lock;
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_cookie(&xdr, &args->cookie);
+ encode_bool(&xdr, lock->fl.fl_type == F_WRLCK);
+ encode_nlm_lock(&xdr, lock);
+ return 0;
+}
+
+/*
+ * struct nlm_lockargs {
+ * netobj cookie;
+ * bool block;
+ * bool exclusive;
+ * struct nlm_lock alock;
+ * bool reclaim;
+ * int state;
+ * };
+ */
+static int nlm_xdr_enc_lockargs(struct rpc_rqst *req, __be32 *p,
+ const struct nlm_args *args)
+{
+ const struct nlm_lock *lock = &args->lock;
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_cookie(&xdr, &args->cookie);
+ encode_bool(&xdr, args->block);
+ encode_bool(&xdr, lock->fl.fl_type == F_WRLCK);
+ encode_nlm_lock(&xdr, lock);
+ encode_bool(&xdr, args->reclaim);
+ encode_int32(&xdr, args->state);
+ return 0;
+}
+
+/*
+ * struct nlm_cancargs {
+ * netobj cookie;
+ * bool block;
+ * bool exclusive;
+ * struct nlm_lock alock;
+ * };
+ */
+static int nlm_xdr_enc_cancargs(struct rpc_rqst *req, __be32 *p,
+ const struct nlm_args *args)
+{
+ const struct nlm_lock *lock = &args->lock;
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_cookie(&xdr, &args->cookie);
+ encode_bool(&xdr, args->block);
+ encode_bool(&xdr, lock->fl.fl_type == F_WRLCK);
+ encode_nlm_lock(&xdr, lock);
+ return 0;
+}
+
+/*
+ * struct nlm_unlockargs {
+ * netobj cookie;
+ * struct nlm_lock alock;
+ * };
+ */
+static int nlm_xdr_enc_unlockargs(struct rpc_rqst *req, __be32 *p,
+ const struct nlm_args *args)
+{
+ const struct nlm_lock *lock = &args->lock;
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_cookie(&xdr, &args->cookie);
+ encode_nlm_lock(&xdr, lock);
+ return 0;
+}
+
+/*
+ * struct nlm_res {
+ * netobj cookie;
+ * nlm_stat stat;
+ * };
+ */
+static int nlm_xdr_enc_res(struct rpc_rqst *req, __be32 *p,
+ const struct nlm_res *result)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_cookie(&xdr, &result->cookie);
+ encode_nlm_stat(&xdr, result->status);
+ return 0;
+}
+
+/*
+ * union nlm_testrply switch (nlm_stats stat) {
+ * case LCK_DENIED:
+ * struct nlm_holder holder;
+ * default:
+ * void;
+ * };
+ *
+ * struct nlm_testres {
+ * netobj cookie;
+ * nlm_testrply test_stat;
+ * };
+ */
+static void encode_nlm_testrply(struct xdr_stream *xdr,
+ const struct nlm_res *result)
+{
+ if (result->status == nlm_lck_denied)
+ encode_nlm_holder(xdr, result);
+}
+
+static int nlm_xdr_enc_testres(struct rpc_rqst *req, __be32 *p,
+ const struct nlm_res *result)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_cookie(&xdr, &result->cookie);
+ encode_nlm_stat(&xdr, result->status);
+ encode_nlm_testrply(&xdr, result);
+ return 0;
+}
+
+
+/*
+ * NLMv3 XDR decode functions
+ *
+ * NLMv3 result types are defined in Chapter 10 of The Open Group's
+ * "Protocols for Interworking: XNFS, Version 3W".
+ */
+
+/*
+ * union nlm_testrply switch (nlm_stats stat) {
+ * case LCK_DENIED:
+ * struct nlm_holder holder;
+ * default:
+ * void;
+ * };
+ *
+ * struct nlm_testres {
+ * netobj cookie;
+ * nlm_testrply test_stat;
+ * };
+ */
+static int decode_nlm_testrply(struct xdr_stream *xdr,
+ struct nlm_res *result)
+{
+ int error;
+
+ error = decode_nlm_stat(xdr, &result->status);
+ if (unlikely(error))
+ goto out;
+ if (result->status == nlm_lck_denied)
+ error = decode_nlm_holder(xdr, result);
+out:
+ return error;
+}
+
+static int nlm_xdr_dec_testres(struct rpc_rqst *req, __be32 *p,
+ struct nlm_res *result)
+{
+ struct xdr_stream xdr;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_cookie(&xdr, &result->cookie);
+ if (unlikely(error))
+ goto out;
+ error = decode_nlm_testrply(&xdr, result);
+out:
+ return error;
+}
+
+/*
+ * struct nlm_res {
+ * netobj cookie;
+ * nlm_stat stat;
+ * };
+ */
+static int nlm_xdr_dec_res(struct rpc_rqst *req, __be32 *p,
+ struct nlm_res *result)
+{
+ struct xdr_stream xdr;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_cookie(&xdr, &result->cookie);
+ if (unlikely(error))
+ goto out;
+ error = decode_nlm_stat(&xdr, &result->status);
+out:
+ return error;
+}
+
+
+/*
+ * For NLM, a void procedure really returns nothing
+ */
+#define nlm_xdr_dec_norep NULL
+
+#define PROC(proc, argtype, restype) \
+[NLMPROC_##proc] = { \
+ .p_proc = NLMPROC_##proc, \
+ .p_encode = (kxdrproc_t)nlm_xdr_enc_##argtype, \
+ .p_decode = (kxdrproc_t)nlm_xdr_dec_##restype, \
+ .p_arglen = NLM_##argtype##_sz, \
+ .p_replen = NLM_##restype##_sz, \
+ .p_statidx = NLMPROC_##proc, \
+ .p_name = #proc, \
+ }
+
+static struct rpc_procinfo nlm_procedures[] = {
+ PROC(TEST, testargs, testres),
+ PROC(LOCK, lockargs, res),
+ PROC(CANCEL, cancargs, res),
+ PROC(UNLOCK, unlockargs, res),
+ PROC(GRANTED, testargs, res),
+ PROC(TEST_MSG, testargs, norep),
+ PROC(LOCK_MSG, lockargs, norep),
+ PROC(CANCEL_MSG, cancargs, norep),
+ PROC(UNLOCK_MSG, unlockargs, norep),
+ PROC(GRANTED_MSG, testargs, norep),
+ PROC(TEST_RES, testres, norep),
+ PROC(LOCK_RES, res, norep),
+ PROC(CANCEL_RES, res, norep),
+ PROC(UNLOCK_RES, res, norep),
+ PROC(GRANTED_RES, res, norep),
+};
+
+static struct rpc_version nlm_version1 = {
+ .number = 1,
+ .nrprocs = ARRAY_SIZE(nlm_procedures),
+ .procs = nlm_procedures,
+};
+
+static struct rpc_version nlm_version3 = {
+ .number = 3,
+ .nrprocs = ARRAY_SIZE(nlm_procedures),
+ .procs = nlm_procedures,
+};
+
+static struct rpc_version *nlm_versions[] = {
+ [1] = &nlm_version1,
+ [3] = &nlm_version3,
+#ifdef CONFIG_LOCKD_V4
+ [4] = &nlm_version4,
+#endif
+};
+
+static struct rpc_stat nlm_rpc_stats;
+
+struct rpc_program nlm_program = {
+ .name = "lockd",
+ .number = NLM_PROGRAM,
+ .nrvers = ARRAY_SIZE(nlm_versions),
+ .version = nlm_versions,
+ .stats = &nlm_rpc_stats,
+};
diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c
index b583ab0..0eb694d 100644
--- a/fs/lockd/xdr.c
+++ b/fs/lockd/xdr.c
@@ -149,37 +149,6 @@ nlm_decode_lock(__be32 *p, struct nlm_lock *lock)
}
/*
- * Encode a lock as part of an NLM call
- */
-static __be32 *
-nlm_encode_lock(__be32 *p, struct nlm_lock *lock)
-{
- struct file_lock *fl = &lock->fl;
- __s32 start, len;
-
- if (!(p = xdr_encode_string(p, lock->caller))
- || !(p = nlm_encode_fh(p, &lock->fh))
- || !(p = nlm_encode_oh(p, &lock->oh)))
- return NULL;
-
- if (fl->fl_start > NLM_OFFSET_MAX
- || (fl->fl_end > NLM_OFFSET_MAX && fl->fl_end != OFFSET_MAX))
- return NULL;
-
- start = loff_t_to_s32(fl->fl_start);
- if (fl->fl_end == OFFSET_MAX)
- len = 0;
- else
- len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1);
-
- *p++ = htonl(lock->svid);
- *p++ = htonl(start);
- *p++ = htonl(len);
-
- return p;
-}
-
-/*
* Encode result of a TEST/TEST_MSG call
*/
static __be32 *
@@ -373,233 +342,6 @@ nlmsvc_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy)
return xdr_ressize_check(rqstp, p);
}
-/*
- * Now, the client side XDR functions
- */
-#ifdef NLMCLNT_SUPPORT_SHARES
-static int
-nlmclt_decode_void(struct rpc_rqst *req, u32 *p, void *ptr)
-{
- return 0;
-}
-#endif
-
-static int
-nlmclt_encode_testargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp)
-{
- struct nlm_lock *lock = &argp->lock;
-
- if (!(p = nlm_encode_cookie(p, &argp->cookie)))
- return -EIO;
- *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero;
- if (!(p = nlm_encode_lock(p, lock)))
- return -EIO;
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-static int
-nlmclt_decode_testres(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp)
-{
- if (!(p = nlm_decode_cookie(p, &resp->cookie)))
- return -EIO;
- resp->status = *p++;
- if (resp->status == nlm_lck_denied) {
- struct file_lock *fl = &resp->lock.fl;
- u32 excl;
- s32 start, len, end;
-
- memset(&resp->lock, 0, sizeof(resp->lock));
- locks_init_lock(fl);
- excl = ntohl(*p++);
- resp->lock.svid = ntohl(*p++);
- fl->fl_pid = (pid_t)resp->lock.svid;
- if (!(p = nlm_decode_oh(p, &resp->lock.oh)))
- return -EIO;
-
- fl->fl_flags = FL_POSIX;
- fl->fl_type = excl? F_WRLCK : F_RDLCK;
- start = ntohl(*p++);
- len = ntohl(*p++);
- end = start + len - 1;
-
- fl->fl_start = s32_to_loff_t(start);
- if (len == 0 || end < 0)
- fl->fl_end = OFFSET_MAX;
- else
- fl->fl_end = s32_to_loff_t(end);
- }
- return 0;
-}
-
-
-static int
-nlmclt_encode_lockargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp)
-{
- struct nlm_lock *lock = &argp->lock;
-
- if (!(p = nlm_encode_cookie(p, &argp->cookie)))
- return -EIO;
- *p++ = argp->block? xdr_one : xdr_zero;
- *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero;
- if (!(p = nlm_encode_lock(p, lock)))
- return -EIO;
- *p++ = argp->reclaim? xdr_one : xdr_zero;
- *p++ = htonl(argp->state);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-static int
-nlmclt_encode_cancargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp)
-{
- struct nlm_lock *lock = &argp->lock;
-
- if (!(p = nlm_encode_cookie(p, &argp->cookie)))
- return -EIO;
- *p++ = argp->block? xdr_one : xdr_zero;
- *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero;
- if (!(p = nlm_encode_lock(p, lock)))
- return -EIO;
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-static int
-nlmclt_encode_unlockargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp)
-{
- struct nlm_lock *lock = &argp->lock;
-
- if (!(p = nlm_encode_cookie(p, &argp->cookie)))
- return -EIO;
- if (!(p = nlm_encode_lock(p, lock)))
- return -EIO;
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-static int
-nlmclt_encode_res(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp)
-{
- if (!(p = nlm_encode_cookie(p, &resp->cookie)))
- return -EIO;
- *p++ = resp->status;
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-static int
-nlmclt_encode_testres(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp)
-{
- if (!(p = nlm_encode_testres(p, resp)))
- return -EIO;
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-static int
-nlmclt_decode_res(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp)
-{
- if (!(p = nlm_decode_cookie(p, &resp->cookie)))
- return -EIO;
- resp->status = *p++;
- return 0;
-}
-
-#if (NLMCLNT_OHSIZE > XDR_MAX_NETOBJ)
-# error "NLM host name cannot be larger than XDR_MAX_NETOBJ!"
-#endif
-
-/*
- * Buffer requirements for NLM
- */
-#define NLM_void_sz 0
-#define NLM_cookie_sz 1+XDR_QUADLEN(NLM_MAXCOOKIELEN)
-#define NLM_caller_sz 1+XDR_QUADLEN(NLMCLNT_OHSIZE)
-#define NLM_owner_sz 1+XDR_QUADLEN(NLMCLNT_OHSIZE)
-#define NLM_fhandle_sz 1+XDR_QUADLEN(NFS2_FHSIZE)
-#define NLM_lock_sz 3+NLM_caller_sz+NLM_owner_sz+NLM_fhandle_sz
-#define NLM_holder_sz 4+NLM_owner_sz
-
-#define NLM_testargs_sz NLM_cookie_sz+1+NLM_lock_sz
-#define NLM_lockargs_sz NLM_cookie_sz+4+NLM_lock_sz
-#define NLM_cancargs_sz NLM_cookie_sz+2+NLM_lock_sz
-#define NLM_unlockargs_sz NLM_cookie_sz+NLM_lock_sz
-
-#define NLM_testres_sz NLM_cookie_sz+1+NLM_holder_sz
-#define NLM_res_sz NLM_cookie_sz+1
-#define NLM_norep_sz 0
-
-/*
- * For NLM, a void procedure really returns nothing
- */
-#define nlmclt_decode_norep NULL
-
-#define PROC(proc, argtype, restype) \
-[NLMPROC_##proc] = { \
- .p_proc = NLMPROC_##proc, \
- .p_encode = (kxdrproc_t) nlmclt_encode_##argtype, \
- .p_decode = (kxdrproc_t) nlmclt_decode_##restype, \
- .p_arglen = NLM_##argtype##_sz, \
- .p_replen = NLM_##restype##_sz, \
- .p_statidx = NLMPROC_##proc, \
- .p_name = #proc, \
- }
-
-static struct rpc_procinfo nlm_procedures[] = {
- PROC(TEST, testargs, testres),
- PROC(LOCK, lockargs, res),
- PROC(CANCEL, cancargs, res),
- PROC(UNLOCK, unlockargs, res),
- PROC(GRANTED, testargs, res),
- PROC(TEST_MSG, testargs, norep),
- PROC(LOCK_MSG, lockargs, norep),
- PROC(CANCEL_MSG, cancargs, norep),
- PROC(UNLOCK_MSG, unlockargs, norep),
- PROC(GRANTED_MSG, testargs, norep),
- PROC(TEST_RES, testres, norep),
- PROC(LOCK_RES, res, norep),
- PROC(CANCEL_RES, res, norep),
- PROC(UNLOCK_RES, res, norep),
- PROC(GRANTED_RES, res, norep),
-#ifdef NLMCLNT_SUPPORT_SHARES
- PROC(SHARE, shareargs, shareres),
- PROC(UNSHARE, shareargs, shareres),
- PROC(NM_LOCK, lockargs, res),
- PROC(FREE_ALL, notify, void),
-#endif
-};
-
-static struct rpc_version nlm_version1 = {
- .number = 1,
- .nrprocs = 16,
- .procs = nlm_procedures,
-};
-
-static struct rpc_version nlm_version3 = {
- .number = 3,
- .nrprocs = 24,
- .procs = nlm_procedures,
-};
-
-static struct rpc_version * nlm_versions[] = {
- [1] = &nlm_version1,
- [3] = &nlm_version3,
-#ifdef CONFIG_LOCKD_V4
- [4] = &nlm_version4,
-#endif
-};
-
-static struct rpc_stat nlm_stats;
-
-struct rpc_program nlm_program = {
- .name = "lockd",
- .number = NLM_PROGRAM,
- .nrvers = ARRAY_SIZE(nlm_versions),
- .version = nlm_versions,
- .stats = &nlm_stats,
-};
-
#ifdef RPC_DEBUG
const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie)
{
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 09/31] NFS: Introduce new-style XDR encoding functions for NFSv3
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (7 preceding siblings ...)
2010-12-14 14:55 ` [PATCH 08/31] lockd: Introduce new-style XDR functions for NLMv3 Chuck Lever
@ 2010-12-14 14:55 ` Chuck Lever
2010-12-14 14:56 ` [PATCH 10/31] NFS: Replace old NFSv3 encoder functions with xdr_stream-based ones Chuck Lever
` (22 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:55 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
We're interested in taking advantage of the safety benefits of
xdr_streams. These data structures allow more careful checking for
buffer overflow while encoding. More careful type checking is also
introduced in the new functions.
For efficiency, we also eventually want to be able to pass xdr_streams
from call_encode() to all XDR encoding functions, rather than building
an xdr_stream in every XDR encoding function in the kernel. To do
this means all encoders must be ready to handle a passed-in
xdr_stream.
The new encoders follow the modern paradigm for XDR encoders: BUG on
error, and always return a zero status code.
Static helper functions are left without the "inline" directive. This
allows the compiler to choose automatically how to optimize these for
size or speed.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs3xdr.c | 833 ++++++++++++++++++++++++++++++++++++++++++++++++++
include/linux/nfs3.h | 2
2 files changed, 832 insertions(+), 3 deletions(-)
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index f6cc60f..3d1043f 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -37,6 +37,7 @@
#define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2))
#define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2))
#define NFS3_fattr_sz (21)
+#define NFS3_cookieverf_sz (NFS3_COOKIEVERFSIZE>>2)
#define NFS3_wcc_attr_sz (6)
#define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz)
#define NFS3_post_op_attr_sz (1+NFS3_fattr_sz)
@@ -59,7 +60,8 @@
#define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz)
#define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz)
#define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz)
-#define NFS3_readdirargs_sz (NFS3_fh_sz+2)
+#define NFS3_readdirargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+3)
+#define NFS3_readdirplusargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+4)
#define NFS3_commitargs_sz (NFS3_fh_sz+3)
#define NFS3_attrstat_sz (1+NFS3_fattr_sz)
@@ -108,6 +110,22 @@ static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
}
/*
+ * While encoding arguments, set up the reply buffer in advance to
+ * receive reply data directly into the page cache.
+ */
+static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages,
+ unsigned int base, unsigned int len,
+ unsigned int bufsize)
+{
+ struct rpc_auth *auth = req->rq_cred->cr_auth;
+ unsigned int replen;
+
+ replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize;
+ xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len);
+}
+
+
+/*
* Common NFS XDR functions as inlines
*/
static inline __be32 *
@@ -153,7 +171,7 @@ out_overflow:
* Encode/decode time.
*/
static inline __be32 *
-xdr_encode_time3(__be32 *p, struct timespec *timep)
+xdr_encode_time3(__be32 *p, const struct timespec *timep)
{
*p++ = htonl(timep->tv_sec);
*p++ = htonl(timep->tv_nsec);
@@ -205,7 +223,7 @@ xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr)
}
static inline __be32 *
-xdr_encode_sattr(__be32 *p, struct iattr *attr)
+xdr_encode_sattr(__be32 *p, const struct iattr *attr)
{
if (attr->ia_valid & ATTR_MODE) {
*p++ = xdr_one;
@@ -306,6 +324,243 @@ xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr)
return xdr_decode_post_op_attr(p, fattr);
}
+
+/*
+ * Encode/decode NFSv3 basic data types
+ *
+ * Basic NFSv3 data types are defined in section 2.5 of RFC 1813:
+ * "NFS Version 3 Protocol Specification".
+ *
+ * Not all basic data types have their own encoding and decoding
+ * functions. For run-time efficiency, some data types are encoded
+ * or decoded inline.
+ */
+
+static void encode_uint32(struct xdr_stream *xdr, u32 value)
+{
+ __be32 *p = xdr_reserve_space(xdr, 4);
+ *p = cpu_to_be32(value);
+}
+
+/*
+ * filename3
+ *
+ * typedef string filename3<>;
+ */
+static void encode_filename3(struct xdr_stream *xdr,
+ const char *name, u32 length)
+{
+ __be32 *p;
+
+ BUG_ON(length > NFS3_MAXNAMLEN);
+ p = xdr_reserve_space(xdr, 4 + length);
+ xdr_encode_opaque(p, name, length);
+}
+
+/*
+ * nfspath3
+ *
+ * typedef string nfspath3<>;
+ */
+static void encode_nfspath3(struct xdr_stream *xdr, struct page **pages,
+ const u32 length)
+{
+ BUG_ON(length > NFS3_MAXPATHLEN);
+ encode_uint32(xdr, length);
+ xdr_write_pages(xdr, pages, 0, length);
+}
+
+/*
+ * cookie3
+ *
+ * typedef uint64 cookie3
+ */
+static __be32 *xdr_encode_cookie3(__be32 *p, u64 cookie)
+{
+ return xdr_encode_hyper(p, cookie);
+}
+
+/*
+ * cookieverf3
+ *
+ * typedef opaque cookieverf3[NFS3_COOKIEVERFSIZE];
+ */
+static __be32 *xdr_encode_cookieverf3(__be32 *p, const __be32 *verifier)
+{
+ memcpy(p, verifier, NFS3_COOKIEVERFSIZE);
+ return p + XDR_QUADLEN(NFS3_COOKIEVERFSIZE);
+}
+
+/*
+ * createverf3
+ *
+ * typedef opaque createverf3[NFS3_CREATEVERFSIZE];
+ */
+static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier)
+{
+ __be32 *p;
+
+ p = xdr_reserve_space(xdr, NFS3_CREATEVERFSIZE);
+ memcpy(p, verifier, NFS3_CREATEVERFSIZE);
+}
+
+/*
+ * ftype3
+ *
+ * enum ftype3 {
+ * NF3REG = 1,
+ * NF3DIR = 2,
+ * NF3BLK = 3,
+ * NF3CHR = 4,
+ * NF3LNK = 5,
+ * NF3SOCK = 6,
+ * NF3FIFO = 7
+ * };
+ */
+static void encode_ftype3(struct xdr_stream *xdr, const u32 type)
+{
+ BUG_ON(type > NF3FIFO);
+ encode_uint32(xdr, type);
+}
+
+/*
+ * specdata3
+ *
+ * struct specdata3 {
+ * uint32 specdata1;
+ * uint32 specdata2;
+ * };
+ */
+static void encode_specdata3(struct xdr_stream *xdr, const dev_t rdev)
+{
+ __be32 *p;
+
+ p = xdr_reserve_space(xdr, 8);
+ *p++ = cpu_to_be32(MAJOR(rdev));
+ *p = cpu_to_be32(MINOR(rdev));
+}
+
+/*
+ * nfs_fh3
+ *
+ * struct nfs_fh3 {
+ * opaque data<NFS3_FHSIZE>;
+ * };
+ */
+static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh)
+{
+ __be32 *p;
+
+ BUG_ON(fh->size > NFS3_FHSIZE);
+ p = xdr_reserve_space(xdr, 4 + fh->size);
+ xdr_encode_opaque(p, fh->data, fh->size);
+}
+
+/*
+ * sattr3
+ *
+ * enum time_how {
+ * DONT_CHANGE = 0,
+ * SET_TO_SERVER_TIME = 1,
+ * SET_TO_CLIENT_TIME = 2
+ * };
+ *
+ * union set_mode3 switch (bool set_it) {
+ * case TRUE:
+ * mode3 mode;
+ * default:
+ * void;
+ * };
+ *
+ * union set_uid3 switch (bool set_it) {
+ * case TRUE:
+ * uid3 uid;
+ * default:
+ * void;
+ * };
+ *
+ * union set_gid3 switch (bool set_it) {
+ * case TRUE:
+ * gid3 gid;
+ * default:
+ * void;
+ * };
+ *
+ * union set_size3 switch (bool set_it) {
+ * case TRUE:
+ * size3 size;
+ * default:
+ * void;
+ * };
+ *
+ * union set_atime switch (time_how set_it) {
+ * case SET_TO_CLIENT_TIME:
+ * nfstime3 atime;
+ * default:
+ * void;
+ * };
+ *
+ * union set_mtime switch (time_how set_it) {
+ * case SET_TO_CLIENT_TIME:
+ * nfstime3 mtime;
+ * default:
+ * void;
+ * };
+ *
+ * struct sattr3 {
+ * set_mode3 mode;
+ * set_uid3 uid;
+ * set_gid3 gid;
+ * set_size3 size;
+ * set_atime atime;
+ * set_mtime mtime;
+ * };
+ */
+static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr)
+{
+ u32 nbytes;
+ __be32 *p;
+
+ /*
+ * In order to make only a single xdr_reserve_space() call,
+ * pre-compute the total number of bytes to be reserved.
+ * Six boolean values, one for each set_foo field, are always
+ * present in the encoded result, so start there.
+ */
+ nbytes = 6 * 4;
+ if (attr->ia_valid & ATTR_MODE)
+ nbytes += 4;
+ if (attr->ia_valid & ATTR_UID)
+ nbytes += 4;
+ if (attr->ia_valid & ATTR_GID)
+ nbytes += 4;
+ if (attr->ia_valid & ATTR_SIZE)
+ nbytes += 8;
+ if (attr->ia_valid & ATTR_ATIME_SET)
+ nbytes += 8;
+ if (attr->ia_valid & ATTR_MTIME_SET)
+ nbytes += 8;
+ p = xdr_reserve_space(xdr, nbytes);
+
+ xdr_encode_sattr(p, attr);
+}
+
+/*
+ * diropargs3
+ *
+ * struct diropargs3 {
+ * nfs_fh3 dir;
+ * filename3 name;
+ * };
+ */
+static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh,
+ const char *name, u32 length)
+{
+ encode_nfs_fh3(xdr, fh);
+ encode_filename3(xdr, name, length);
+}
+
+
/*
* NFS encode functions
*/
@@ -322,6 +577,23 @@ nfs3_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh)
}
/*
+ * 3.3.1 GETATTR3args
+ *
+ * struct GETATTR3args {
+ * nfs_fh3 object;
+ * };
+ */
+static int nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_fh *fh)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_nfs_fh3(&xdr, fh);
+ return 0;
+}
+
+/*
* Encode SETATTR arguments
*/
static int
@@ -337,6 +609,49 @@ nfs3_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs3_sattrargs *args)
}
/*
+ * 3.3.2 SETATTR3args
+ *
+ * union sattrguard3 switch (bool check) {
+ * case TRUE:
+ * nfstime3 obj_ctime;
+ * case FALSE:
+ * void;
+ * };
+ *
+ * struct SETATTR3args {
+ * nfs_fh3 object;
+ * sattr3 new_attributes;
+ * sattrguard3 guard;
+ * };
+ */
+static void encode_sattrguard3(struct xdr_stream *xdr,
+ const struct nfs3_sattrargs *args)
+{
+ __be32 *p;
+
+ if (args->guard) {
+ p = xdr_reserve_space(xdr, 4 + 8);
+ *p++ = xdr_one;
+ xdr_encode_time3(p, &args->guardtime);
+ } else {
+ p = xdr_reserve_space(xdr, 4);
+ *p = xdr_zero;
+ }
+}
+
+static int nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs3_sattrargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_nfs_fh3(&xdr, args->fh);
+ encode_sattr3(&xdr, args->sattr);
+ encode_sattrguard3(&xdr, args);
+ return 0;
+}
+
+/*
* Encode directory ops argument
*/
static int
@@ -349,6 +664,23 @@ nfs3_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs3_diropargs *args)
}
/*
+ * 3.3.3 LOOKUP3args
+ *
+ * struct LOOKUP3args {
+ * diropargs3 what;
+ * };
+ */
+static int nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs3_diropargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_diropargs3(&xdr, args->fh, args->name, args->len);
+ return 0;
+}
+
+/*
* Encode REMOVE argument
*/
static int
@@ -373,6 +705,50 @@ nfs3_xdr_accessargs(struct rpc_rqst *req, __be32 *p, struct nfs3_accessargs *arg
}
/*
+ * 3.3.4 ACCESS3args
+ *
+ * struct ACCESS3args {
+ * nfs_fh3 object;
+ * uint32 access;
+ * };
+ */
+static void encode_access3args(struct xdr_stream *xdr,
+ const struct nfs3_accessargs *args)
+{
+ encode_nfs_fh3(xdr, args->fh);
+ encode_uint32(xdr, args->access);
+}
+
+static int nfs3_xdr_enc_access3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs3_accessargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_access3args(&xdr, args);
+ return 0;
+}
+
+/*
+ * 3.3.5 READLINK3args
+ *
+ * struct READLINK3args {
+ * nfs_fh3 symlink;
+ * };
+ */
+static int nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs3_readlinkargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_nfs_fh3(&xdr, args->fh);
+ prepare_reply_buffer(req, args->pages, args->pgbase,
+ args->pglen, NFS3_readlinkres_sz);
+ return 0;
+}
+
+/*
* Arguments to a READ call. Since we read data directly into the page
* cache, we also set up the reply iovec here so that iov[1] points
* exactly to the page we want to fetch.
@@ -398,6 +774,40 @@ nfs3_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
}
/*
+ * 3.3.6 READ3args
+ *
+ * struct READ3args {
+ * nfs_fh3 file;
+ * offset3 offset;
+ * count3 count;
+ * };
+ */
+static void encode_read3args(struct xdr_stream *xdr,
+ const struct nfs_readargs *args)
+{
+ __be32 *p;
+
+ encode_nfs_fh3(xdr, args->fh);
+
+ p = xdr_reserve_space(xdr, 8 + 4);
+ p = xdr_encode_hyper(p, args->offset);
+ *p = cpu_to_be32(args->count);
+}
+
+static int nfs3_xdr_enc_read3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_readargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_read3args(&xdr, args);
+ prepare_reply_buffer(req, args->pages, args->pgbase,
+ args->count, NFS3_readres_sz);
+ req->rq_rcv_buf.flags |= XDRBUF_READ;
+ return 0;
+}
+
+/*
* Write arguments. Splice the buffer to be written into the iovec.
*/
static int
@@ -420,6 +830,52 @@ nfs3_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
}
/*
+ * 3.3.7 WRITE3args
+ *
+ * enum stable_how {
+ * UNSTABLE = 0,
+ * DATA_SYNC = 1,
+ * FILE_SYNC = 2
+ * };
+ *
+ * struct WRITE3args {
+ * nfs_fh3 file;
+ * offset3 offset;
+ * count3 count;
+ * stable_how stable;
+ * opaque data<>;
+ * };
+ */
+static void encode_write3args(struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
+{
+ __be32 *p;
+
+ encode_nfs_fh3(xdr, args->fh);
+
+ p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4);
+ p = xdr_encode_hyper(p, args->offset);
+ *p++ = cpu_to_be32(args->count);
+
+ BUG_ON(args->stable > NFS_FILE_SYNC);
+ *p++ = cpu_to_be32(args->stable);
+
+ *p = cpu_to_be32(args->count);
+ xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
+}
+
+static int nfs3_xdr_enc_write3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_writeargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_write3args(&xdr, args);
+ xdr.buf->flags |= XDRBUF_WRITE;
+ return 0;
+}
+
+/*
* Encode CREATE arguments
*/
static int
@@ -440,6 +896,56 @@ nfs3_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs3_createargs *arg
}
/*
+ * 3.3.8 CREATE3args
+ *
+ * enum createmode3 {
+ * UNCHECKED = 0,
+ * GUARDED = 1,
+ * EXCLUSIVE = 2
+ * };
+ *
+ * union createhow3 switch (createmode3 mode) {
+ * case UNCHECKED:
+ * case GUARDED:
+ * sattr3 obj_attributes;
+ * case EXCLUSIVE:
+ * createverf3 verf;
+ * };
+ *
+ * struct CREATE3args {
+ * diropargs3 where;
+ * createhow3 how;
+ * };
+ */
+static void encode_createhow3(struct xdr_stream *xdr,
+ const struct nfs3_createargs *args)
+{
+ encode_uint32(xdr, args->createmode);
+ switch (args->createmode) {
+ case NFS3_CREATE_UNCHECKED:
+ case NFS3_CREATE_GUARDED:
+ encode_sattr3(xdr, args->sattr);
+ break;
+ case NFS3_CREATE_EXCLUSIVE:
+ encode_createverf3(xdr, args->verifier);
+ break;
+ default:
+ BUG();
+ }
+}
+
+static int nfs3_xdr_enc_create3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs3_createargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_diropargs3(&xdr, args->fh, args->name, args->len);
+ encode_createhow3(&xdr, args);
+ return 0;
+}
+
+/*
* Encode MKDIR arguments
*/
static int
@@ -453,6 +959,25 @@ nfs3_xdr_mkdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mkdirargs *args)
}
/*
+ * 3.3.9 MKDIR3args
+ *
+ * struct MKDIR3args {
+ * diropargs3 where;
+ * sattr3 attributes;
+ * };
+ */
+static int nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs3_mkdirargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_diropargs3(&xdr, args->fh, args->name, args->len);
+ encode_sattr3(&xdr, args->sattr);
+ return 0;
+}
+
+/*
* Encode SYMLINK arguments
*/
static int
@@ -470,6 +995,37 @@ nfs3_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_symlinkargs *a
}
/*
+ * 3.3.10 SYMLINK3args
+ *
+ * struct symlinkdata3 {
+ * sattr3 symlink_attributes;
+ * nfspath3 symlink_data;
+ * };
+ *
+ * struct SYMLINK3args {
+ * diropargs3 where;
+ * symlinkdata3 symlink;
+ * };
+ */
+static void encode_symlinkdata3(struct xdr_stream *xdr,
+ const struct nfs3_symlinkargs *args)
+{
+ encode_sattr3(xdr, args->sattr);
+ encode_nfspath3(xdr, args->pages, args->pathlen);
+}
+
+static int nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs3_symlinkargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_diropargs3(&xdr, args->fromfh, args->fromname, args->fromlen);
+ encode_symlinkdata3(&xdr, args);
+ return 0;
+}
+
+/*
* Encode MKNOD arguments
*/
static int
@@ -489,6 +1045,86 @@ nfs3_xdr_mknodargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mknodargs *args)
}
/*
+ * 3.3.11 MKNOD3args
+ *
+ * struct devicedata3 {
+ * sattr3 dev_attributes;
+ * specdata3 spec;
+ * };
+ *
+ * union mknoddata3 switch (ftype3 type) {
+ * case NF3CHR:
+ * case NF3BLK:
+ * devicedata3 device;
+ * case NF3SOCK:
+ * case NF3FIFO:
+ * sattr3 pipe_attributes;
+ * default:
+ * void;
+ * };
+ *
+ * struct MKNOD3args {
+ * diropargs3 where;
+ * mknoddata3 what;
+ * };
+ */
+static void encode_devicedata3(struct xdr_stream *xdr,
+ const struct nfs3_mknodargs *args)
+{
+ encode_sattr3(xdr, args->sattr);
+ encode_specdata3(xdr, args->rdev);
+}
+
+static void encode_mknoddata3(struct xdr_stream *xdr,
+ const struct nfs3_mknodargs *args)
+{
+ encode_ftype3(xdr, args->type);
+ switch (args->type) {
+ case NF3CHR:
+ case NF3BLK:
+ encode_devicedata3(xdr, args);
+ break;
+ case NF3SOCK:
+ case NF3FIFO:
+ encode_sattr3(xdr, args->sattr);
+ break;
+ case NF3REG:
+ case NF3DIR:
+ break;
+ default:
+ BUG();
+ }
+}
+
+static int nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs3_mknodargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_diropargs3(&xdr, args->fh, args->name, args->len);
+ encode_mknoddata3(&xdr, args);
+ return 0;
+}
+
+/*
+ * 3.3.12 REMOVE3args
+ *
+ * struct REMOVE3args {
+ * diropargs3 object;
+ * };
+ */
+static int nfs3_xdr_enc_remove3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_removeargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_diropargs3(&xdr, args->fh, args->name.name, args->name.len);
+ return 0;
+}
+
+/*
* Encode RENAME arguments
*/
static int
@@ -503,6 +1139,27 @@ nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs_renameargs *args
}
/*
+ * 3.3.14 RENAME3args
+ *
+ * struct RENAME3args {
+ * diropargs3 from;
+ * diropargs3 to;
+ * };
+ */
+static int nfs3_xdr_enc_rename3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_renameargs *args)
+{
+ const struct qstr *old = args->old_name;
+ const struct qstr *new = args->new_name;
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_diropargs3(&xdr, args->old_dir, old->name, old->len);
+ encode_diropargs3(&xdr, args->new_dir, new->name, new->len);
+ return 0;
+}
+
+/*
* Encode LINK arguments
*/
static int
@@ -516,6 +1173,25 @@ nfs3_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_linkargs *args)
}
/*
+ * 3.3.15 LINK3args
+ *
+ * struct LINK3args {
+ * nfs_fh3 file;
+ * diropargs3 link;
+ * };
+ */
+static int nfs3_xdr_enc_link3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs3_linkargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_nfs_fh3(&xdr, args->fromfh);
+ encode_diropargs3(&xdr, args->tofh, args->toname, args->tolen);
+ return 0;
+}
+
+/*
* Encode arguments to readdir call
*/
static int
@@ -544,6 +1220,84 @@ nfs3_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirargs *a
}
/*
+ * 3.3.16 READDIR3args
+ *
+ * struct READDIR3args {
+ * nfs_fh3 dir;
+ * cookie3 cookie;
+ * cookieverf3 cookieverf;
+ * count3 count;
+ * };
+ */
+static void encode_readdir3args(struct xdr_stream *xdr,
+ const struct nfs3_readdirargs *args)
+{
+ __be32 *p;
+
+ encode_nfs_fh3(xdr, args->fh);
+
+ p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4);
+ p = xdr_encode_cookie3(p, args->cookie);
+ p = xdr_encode_cookieverf3(p, args->verf);
+ *p = cpu_to_be32(args->count);
+}
+
+static int nfs3_xdr_enc_readdir3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs3_readdirargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_readdir3args(&xdr, args);
+ prepare_reply_buffer(req, args->pages, 0,
+ args->count, NFS3_readdirres_sz);
+ return 0;
+}
+
+/*
+ * 3.3.17 READDIRPLUS3args
+ *
+ * struct READDIRPLUS3args {
+ * nfs_fh3 dir;
+ * cookie3 cookie;
+ * cookieverf3 cookieverf;
+ * count3 dircount;
+ * count3 maxcount;
+ * };
+ */
+static void encode_readdirplus3args(struct xdr_stream *xdr,
+ const struct nfs3_readdirargs *args)
+{
+ __be32 *p;
+
+ encode_nfs_fh3(xdr, args->fh);
+
+ p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4);
+ p = xdr_encode_cookie3(p, args->cookie);
+ p = xdr_encode_cookieverf3(p, args->verf);
+
+ /*
+ * readdirplus: need dircount + buffer size.
+ * We just make sure we make dircount big enough
+ */
+ *p++ = cpu_to_be32(args->count >> 3);
+
+ *p = cpu_to_be32(args->count);
+}
+
+static int nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs3_readdirargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_readdirplus3args(&xdr, args);
+ prepare_reply_buffer(req, args->pages, 0,
+ args->count, NFS3_readdirres_sz);
+ return 0;
+}
+
+/*
* Decode the result of a readdir call.
* We just check for syntactical correctness.
*/
@@ -674,6 +1428,37 @@ nfs3_xdr_commitargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
return 0;
}
+/*
+ * 3.3.21 COMMIT3args
+ *
+ * struct COMMIT3args {
+ * nfs_fh3 file;
+ * offset3 offset;
+ * count3 count;
+ * };
+ */
+static void encode_commit3args(struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
+{
+ __be32 *p;
+
+ encode_nfs_fh3(xdr, args->fh);
+
+ p = xdr_reserve_space(xdr, 8 + 4);
+ p = xdr_encode_hyper(p, args->offset);
+ *p = cpu_to_be32(args->count);
+}
+
+static int nfs3_xdr_enc_commit3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs_writeargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_commit3args(&xdr, args);
+ return 0;
+}
+
#ifdef CONFIG_NFS_V3_ACL
/*
* Encode GETACL arguments
@@ -699,6 +1484,21 @@ nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p,
return 0;
}
+static int nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs3_getaclargs *args)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_nfs_fh3(&xdr, args->fh);
+ encode_uint32(&xdr, args->mask);
+ if (args->mask & (NFS_ACL | NFS_DFACL))
+ prepare_reply_buffer(req, args->pages, 0,
+ NFSACL_MAXPAGES << PAGE_SHIFT,
+ ACL3_getaclres_sz);
+ return 0;
+}
+
/*
* Encode SETACL arguments
*/
@@ -731,6 +1531,33 @@ nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p,
NFS_ACL_DEFAULT);
return (err > 0) ? 0 : err;
}
+
+static int nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, __be32 *p,
+ const struct nfs3_setaclargs *args)
+{
+ struct xdr_stream xdr;
+ unsigned int base;
+ int error;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_nfs_fh3(&xdr, NFS_FH(args->inode));
+ encode_uint32(&xdr, args->mask);
+ if (args->npages != 0)
+ xdr_write_pages(&xdr, args->pages, 0, args->len);
+
+ base = req->rq_slen;
+ error = nfsacl_encode(xdr.buf, base, args->inode,
+ (args->mask & NFS_ACL) ?
+ args->acl_access : NULL, 1, 0);
+ BUG_ON(error < 0);
+ error = nfsacl_encode(xdr.buf, base + error, args->inode,
+ (args->mask & NFS_DFACL) ?
+ args->acl_default : NULL, 1,
+ NFS_ACL_DEFAULT);
+ BUG_ON(error < 0);
+ return 0;
+}
+
#endif /* CONFIG_NFS_V3_ACL */
/*
diff --git a/include/linux/nfs3.h b/include/linux/nfs3.h
index ac33806..e2ee14f 100644
--- a/include/linux/nfs3.h
+++ b/include/linux/nfs3.h
@@ -11,6 +11,8 @@
#define NFS3_MAXGROUPS 16
#define NFS3_FHSIZE 64
#define NFS3_COOKIESIZE 4
+#define NFS3_CREATEVERFSIZE 8
+#define NFS3_COOKIEVERFSIZE 8
#define NFS3_FIFO_DEV (-1)
#define NFS3MODE_FMT 0170000
#define NFS3MODE_DIR 0040000
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 10/31] NFS: Replace old NFSv3 encoder functions with xdr_stream-based ones
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (8 preceding siblings ...)
2010-12-14 14:55 ` [PATCH 09/31] NFS: Introduce new-style XDR encoding functions for NFSv3 Chuck Lever
@ 2010-12-14 14:56 ` Chuck Lever
2010-12-14 14:56 ` [PATCH 11/31] NFS: Remove unused old NFSv3 encoder functions Chuck Lever
` (21 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:56 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
The naming scheme of the new encoder functions, which follows the
NFSv4 XDR encoder functions, is slightly different than the scheme
used for the old functions. Rename the functions as a separate
step to keep the patches clean.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs3xdr.c | 58 ++++++++++++++++++++++++++++--------------------------
1 files changed, 30 insertions(+), 28 deletions(-)
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index 3d1043f..bbda890 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -46,10 +46,11 @@
#define NFS3_fsinfo_sz
#define NFS3_pathconf_sz
#define NFS3_entry_sz (NFS3_filename_sz+3)
-
-#define NFS3_sattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3)
#define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz)
-#define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz)
+
+#define NFS3_getattrargs_sz (NFS3_fh_sz)
+#define NFS3_setattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3)
+#define NFS3_lookupargs_sz (NFS3_fh_sz+NFS3_filename_sz)
#define NFS3_accessargs_sz (NFS3_fh_sz+1)
#define NFS3_readlinkargs_sz (NFS3_fh_sz)
#define NFS3_readargs_sz (NFS3_fh_sz+3)
@@ -58,6 +59,7 @@
#define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz)
#define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz)
#define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz)
+#define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz)
#define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz)
#define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz)
#define NFS3_readdirargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+3)
@@ -1969,9 +1971,9 @@ nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
#define PROC(proc, argtype, restype, timer) \
[NFS3PROC_##proc] = { \
.p_proc = NFS3PROC_##proc, \
- .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \
+ .p_encode = (kxdrproc_t)nfs3_xdr_enc_##argtype##3args, \
.p_decode = (kxdrproc_t) nfs3_xdr_##restype, \
- .p_arglen = NFS3_##argtype##_sz, \
+ .p_arglen = NFS3_##argtype##args_sz, \
.p_replen = NFS3_##restype##_sz, \
.p_timer = timer, \
.p_statidx = NFS3PROC_##proc, \
@@ -1979,27 +1981,27 @@ nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
}
struct rpc_procinfo nfs3_procedures[] = {
- PROC(GETATTR, fhandle, attrstat, 1),
- PROC(SETATTR, sattrargs, wccstat, 0),
- PROC(LOOKUP, diropargs, lookupres, 2),
- PROC(ACCESS, accessargs, accessres, 1),
- PROC(READLINK, readlinkargs, readlinkres, 3),
- PROC(READ, readargs, readres, 3),
- PROC(WRITE, writeargs, writeres, 4),
- PROC(CREATE, createargs, createres, 0),
- PROC(MKDIR, mkdirargs, createres, 0),
- PROC(SYMLINK, symlinkargs, createres, 0),
- PROC(MKNOD, mknodargs, createres, 0),
- PROC(REMOVE, removeargs, removeres, 0),
- PROC(RMDIR, diropargs, wccstat, 0),
- PROC(RENAME, renameargs, renameres, 0),
- PROC(LINK, linkargs, linkres, 0),
- PROC(READDIR, readdirargs, readdirres, 3),
- PROC(READDIRPLUS, readdirargs, readdirres, 3),
- PROC(FSSTAT, fhandle, fsstatres, 0),
- PROC(FSINFO, fhandle, fsinfores, 0),
- PROC(PATHCONF, fhandle, pathconfres, 0),
- PROC(COMMIT, commitargs, commitres, 5),
+ PROC(GETATTR, getattr, attrstat, 1),
+ PROC(SETATTR, setattr, wccstat, 0),
+ PROC(LOOKUP, lookup, lookupres, 2),
+ PROC(ACCESS, access, accessres, 1),
+ PROC(READLINK, readlink, readlinkres, 3),
+ PROC(READ, read, readres, 3),
+ PROC(WRITE, write, writeres, 4),
+ PROC(CREATE, create, createres, 0),
+ PROC(MKDIR, mkdir, createres, 0),
+ PROC(SYMLINK, symlink, createres, 0),
+ PROC(MKNOD, mknod, createres, 0),
+ PROC(REMOVE, remove, removeres, 0),
+ PROC(RMDIR, lookup, wccstat, 0),
+ PROC(RENAME, rename, renameres, 0),
+ PROC(LINK, link, linkres, 0),
+ PROC(READDIR, readdir, readdirres, 3),
+ PROC(READDIRPLUS, readdirplus, readdirres, 3),
+ PROC(FSSTAT, getattr, fsstatres, 0),
+ PROC(FSINFO, getattr, fsinfores, 0),
+ PROC(PATHCONF, getattr, pathconfres, 0),
+ PROC(COMMIT, commit, commitres, 5),
};
struct rpc_version nfs_version3 = {
@@ -2012,7 +2014,7 @@ struct rpc_version nfs_version3 = {
static struct rpc_procinfo nfs3_acl_procedures[] = {
[ACLPROC3_GETACL] = {
.p_proc = ACLPROC3_GETACL,
- .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs,
+ .p_encode = (kxdrproc_t)nfs3_xdr_enc_getacl3args,
.p_decode = (kxdrproc_t) nfs3_xdr_getaclres,
.p_arglen = ACL3_getaclargs_sz,
.p_replen = ACL3_getaclres_sz,
@@ -2021,7 +2023,7 @@ static struct rpc_procinfo nfs3_acl_procedures[] = {
},
[ACLPROC3_SETACL] = {
.p_proc = ACLPROC3_SETACL,
- .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs,
+ .p_encode = (kxdrproc_t)nfs3_xdr_enc_setacl3args,
.p_decode = (kxdrproc_t) nfs3_xdr_setaclres,
.p_arglen = ACL3_setaclargs_sz,
.p_replen = ACL3_setaclres_sz,
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 11/31] NFS: Remove unused old NFSv3 encoder functions
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (9 preceding siblings ...)
2010-12-14 14:56 ` [PATCH 10/31] NFS: Replace old NFSv3 encoder functions with xdr_stream-based ones Chuck Lever
@ 2010-12-14 14:56 ` Chuck Lever
2010-12-14 14:56 ` [PATCH 12/31] NFS: Update xdr_encode_foo() functions that we're keeping Chuck Lever
` (20 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:56 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up. Remove unused legacy argument encoder functions, and any
now unused encoder helper functions.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs3xdr.c | 328 +-----------------------------------------------------
1 files changed, 4 insertions(+), 324 deletions(-)
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index bbda890..b0af263 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -131,12 +131,6 @@ static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages,
* Common NFS XDR functions as inlines
*/
static inline __be32 *
-xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fh)
-{
- return xdr_encode_array(p, fh->data, fh->size);
-}
-
-static inline __be32 *
xdr_decode_fhandle(__be32 *p, struct nfs_fh *fh)
{
if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) {
@@ -564,21 +558,13 @@ static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh,
/*
- * NFS encode functions
+ * NFSv3 XDR encode functions
+ *
+ * NFSv3 argument types are defined in section 3.3 of RFC 1813:
+ * "NFS Version 3 Protocol Specification".
*/
/*
- * Encode file handle argument
- */
-static int
-nfs3_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh)
-{
- p = xdr_encode_fhandle(p, fh);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 3.3.1 GETATTR3args
*
* struct GETATTR3args {
@@ -596,21 +582,6 @@ static int nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode SETATTR arguments
- */
-static int
-nfs3_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs3_sattrargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_sattr(p, args->sattr);
- *p++ = htonl(args->guard);
- if (args->guard)
- p = xdr_encode_time3(p, &args->guardtime);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 3.3.2 SETATTR3args
*
* union sattrguard3 switch (bool check) {
@@ -654,18 +625,6 @@ static int nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode directory ops argument
- */
-static int
-nfs3_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs3_diropargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 3.3.3 LOOKUP3args
*
* struct LOOKUP3args {
@@ -683,30 +642,6 @@ static int nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode REMOVE argument
- */
-static int
-nfs3_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name.name, args->name.len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
- * Encode access() argument
- */
-static int
-nfs3_xdr_accessargs(struct rpc_rqst *req, __be32 *p, struct nfs3_accessargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- *p++ = htonl(args->access);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 3.3.4 ACCESS3args
*
* struct ACCESS3args {
@@ -751,31 +686,6 @@ static int nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, __be32 *p,
}
/*
- * Arguments to a READ call. Since we read data directly into the page
- * cache, we also set up the reply iovec here so that iov[1] points
- * exactly to the page we want to fetch.
- */
-static int
-nfs3_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
-{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
- u32 count = args->count;
-
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_hyper(p, args->offset);
- *p++ = htonl(count);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
-
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen,
- args->pages, args->pgbase, count);
- req->rq_rcv_buf.flags |= XDRBUF_READ;
- return 0;
-}
-
-/*
* 3.3.6 READ3args
*
* struct READ3args {
@@ -810,28 +720,6 @@ static int nfs3_xdr_enc_read3args(struct rpc_rqst *req, __be32 *p,
}
/*
- * Write arguments. Splice the buffer to be written into the iovec.
- */
-static int
-nfs3_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
-{
- struct xdr_buf *sndbuf = &req->rq_snd_buf;
- u32 count = args->count;
-
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_hyper(p, args->offset);
- *p++ = htonl(count);
- *p++ = htonl(args->stable);
- *p++ = htonl(count);
- sndbuf->len = xdr_adjust_iovec(sndbuf->head, p);
-
- /* Copy the page array */
- xdr_encode_pages(sndbuf, args->pages, args->pgbase, count);
- sndbuf->flags |= XDRBUF_WRITE;
- return 0;
-}
-
-/*
* 3.3.7 WRITE3args
*
* enum stable_how {
@@ -878,26 +766,6 @@ static int nfs3_xdr_enc_write3args(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode CREATE arguments
- */
-static int
-nfs3_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs3_createargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
-
- *p++ = htonl(args->createmode);
- if (args->createmode == NFS3_CREATE_EXCLUSIVE) {
- *p++ = args->verifier[0];
- *p++ = args->verifier[1];
- } else
- p = xdr_encode_sattr(p, args->sattr);
-
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 3.3.8 CREATE3args
*
* enum createmode3 {
@@ -948,19 +816,6 @@ static int nfs3_xdr_enc_create3args(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode MKDIR arguments
- */
-static int
-nfs3_xdr_mkdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mkdirargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
- p = xdr_encode_sattr(p, args->sattr);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 3.3.9 MKDIR3args
*
* struct MKDIR3args {
@@ -980,23 +835,6 @@ static int nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode SYMLINK arguments
- */
-static int
-nfs3_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_symlinkargs *args)
-{
- p = xdr_encode_fhandle(p, args->fromfh);
- p = xdr_encode_array(p, args->fromname, args->fromlen);
- p = xdr_encode_sattr(p, args->sattr);
- *p++ = htonl(args->pathlen);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
-
- /* Copy the page */
- xdr_encode_pages(&req->rq_snd_buf, args->pages, 0, args->pathlen);
- return 0;
-}
-
-/*
* 3.3.10 SYMLINK3args
*
* struct symlinkdata3 {
@@ -1028,25 +866,6 @@ static int nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode MKNOD arguments
- */
-static int
-nfs3_xdr_mknodargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mknodargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_array(p, args->name, args->len);
- *p++ = htonl(args->type);
- p = xdr_encode_sattr(p, args->sattr);
- if (args->type == NF3CHR || args->type == NF3BLK) {
- *p++ = htonl(MAJOR(args->rdev));
- *p++ = htonl(MINOR(args->rdev));
- }
-
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 3.3.11 MKNOD3args
*
* struct devicedata3 {
@@ -1127,20 +946,6 @@ static int nfs3_xdr_enc_remove3args(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode RENAME arguments
- */
-static int
-nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs_renameargs *args)
-{
- p = xdr_encode_fhandle(p, args->old_dir);
- p = xdr_encode_array(p, args->old_name->name, args->old_name->len);
- p = xdr_encode_fhandle(p, args->new_dir);
- p = xdr_encode_array(p, args->new_name->name, args->new_name->len);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 3.3.14 RENAME3args
*
* struct RENAME3args {
@@ -1162,19 +967,6 @@ static int nfs3_xdr_enc_rename3args(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode LINK arguments
- */
-static int
-nfs3_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_linkargs *args)
-{
- p = xdr_encode_fhandle(p, args->fromfh);
- p = xdr_encode_fhandle(p, args->tofh);
- p = xdr_encode_array(p, args->toname, args->tolen);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 3.3.15 LINK3args
*
* struct LINK3args {
@@ -1194,34 +986,6 @@ static int nfs3_xdr_enc_link3args(struct rpc_rqst *req, __be32 *p,
}
/*
- * Encode arguments to readdir call
- */
-static int
-nfs3_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirargs *args)
-{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
- u32 count = args->count;
-
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_hyper(p, args->cookie);
- *p++ = args->verf[0];
- *p++ = args->verf[1];
- if (args->plus) {
- /* readdirplus: need dircount + buffer size.
- * We just make sure we make dircount big enough */
- *p++ = htonl(count >> 3);
- }
- *p++ = htonl(count);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
-
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count);
- return 0;
-}
-
-/*
* 3.3.16 READDIR3args
*
* struct READDIR3args {
@@ -1418,19 +1182,6 @@ out_overflow_exit:
}
/*
- * Encode COMMIT arguments
- */
-static int
-nfs3_xdr_commitargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
-{
- p = xdr_encode_fhandle(p, args->fh);
- p = xdr_encode_hyper(p, args->offset);
- *p++ = htonl(args->count);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-/*
* 3.3.21 COMMIT3args
*
* struct COMMIT3args {
@@ -1462,29 +1213,6 @@ static int nfs3_xdr_enc_commit3args(struct rpc_rqst *req, __be32 *p,
}
#ifdef CONFIG_NFS_V3_ACL
-/*
- * Encode GETACL arguments
- */
-static int
-nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p,
- struct nfs3_getaclargs *args)
-{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
-
- p = xdr_encode_fhandle(p, args->fh);
- *p++ = htonl(args->mask);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
-
- if (args->mask & (NFS_ACL | NFS_DFACL)) {
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack +
- ACL3_getaclres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0,
- NFSACL_MAXPAGES << PAGE_SHIFT);
- }
- return 0;
-}
static int nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, __be32 *p,
const struct nfs3_getaclargs *args)
@@ -1501,39 +1229,6 @@ static int nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, __be32 *p,
return 0;
}
-/*
- * Encode SETACL arguments
- */
-static int
-nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p,
- struct nfs3_setaclargs *args)
-{
- struct xdr_buf *buf = &req->rq_snd_buf;
- unsigned int base;
- int err;
-
- p = xdr_encode_fhandle(p, NFS_FH(args->inode));
- *p++ = htonl(args->mask);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- base = req->rq_slen;
-
- if (args->npages != 0)
- xdr_encode_pages(buf, args->pages, 0, args->len);
- else
- req->rq_slen = xdr_adjust_iovec(req->rq_svec,
- p + XDR_QUADLEN(args->len));
-
- err = nfsacl_encode(buf, base, args->inode,
- (args->mask & NFS_ACL) ?
- args->acl_access : NULL, 1, 0);
- if (err > 0)
- err = nfsacl_encode(buf, base + err, args->inode,
- (args->mask & NFS_DFACL) ?
- args->acl_default : NULL, 1,
- NFS_ACL_DEFAULT);
- return (err > 0) ? 0 : err;
-}
-
static int nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, __be32 *p,
const struct nfs3_setaclargs *args)
{
@@ -1635,21 +1330,6 @@ nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res)
return 0;
}
-static int
-nfs3_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readlinkargs *args)
-{
- struct rpc_auth *auth = req->rq_cred->cr_auth;
- unsigned int replen;
-
- p = xdr_encode_fhandle(p, args->fh);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
-
- /* Inline the page array */
- replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2;
- xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen);
- return 0;
-}
-
/*
* Decode READLINK reply
*/
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 12/31] NFS: Update xdr_encode_foo() functions that we're keeping
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (10 preceding siblings ...)
2010-12-14 14:56 ` [PATCH 11/31] NFS: Remove unused old NFSv3 encoder functions Chuck Lever
@ 2010-12-14 14:56 ` Chuck Lever
2010-12-14 14:56 ` [PATCH 13/31] NFS: Introduce new-style XDR decoding functions for NFSv2 Chuck Lever
` (19 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:56 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up. Move the timestamp and the sattr encoder to match the
placement convention of the other helpers, update their coding style,
and refresh their documenting comments.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs3xdr.c | 111 +++++++++++++++++++++++++++---------------------------
1 files changed, 55 insertions(+), 56 deletions(-)
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index b0af263..119844d 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -167,14 +167,6 @@ out_overflow:
* Encode/decode time.
*/
static inline __be32 *
-xdr_encode_time3(__be32 *p, const struct timespec *timep)
-{
- *p++ = htonl(timep->tv_sec);
- *p++ = htonl(timep->tv_nsec);
- return p;
-}
-
-static inline __be32 *
xdr_decode_time3(__be32 *p, struct timespec *timep)
{
timep->tv_sec = ntohl(*p++);
@@ -219,52 +211,6 @@ xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr)
}
static inline __be32 *
-xdr_encode_sattr(__be32 *p, const struct iattr *attr)
-{
- if (attr->ia_valid & ATTR_MODE) {
- *p++ = xdr_one;
- *p++ = htonl(attr->ia_mode & S_IALLUGO);
- } else {
- *p++ = xdr_zero;
- }
- if (attr->ia_valid & ATTR_UID) {
- *p++ = xdr_one;
- *p++ = htonl(attr->ia_uid);
- } else {
- *p++ = xdr_zero;
- }
- if (attr->ia_valid & ATTR_GID) {
- *p++ = xdr_one;
- *p++ = htonl(attr->ia_gid);
- } else {
- *p++ = xdr_zero;
- }
- if (attr->ia_valid & ATTR_SIZE) {
- *p++ = xdr_one;
- p = xdr_encode_hyper(p, (__u64) attr->ia_size);
- } else {
- *p++ = xdr_zero;
- }
- if (attr->ia_valid & ATTR_ATIME_SET) {
- *p++ = xdr_two;
- p = xdr_encode_time3(p, &attr->ia_atime);
- } else if (attr->ia_valid & ATTR_ATIME) {
- *p++ = xdr_one;
- } else {
- *p++ = xdr_zero;
- }
- if (attr->ia_valid & ATTR_MTIME_SET) {
- *p++ = xdr_two;
- p = xdr_encode_time3(p, &attr->ia_mtime);
- } else if (attr->ia_valid & ATTR_MTIME) {
- *p++ = xdr_one;
- } else {
- *p++ = xdr_zero;
- }
- return p;
-}
-
-static inline __be32 *
xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr)
{
p = xdr_decode_hyper(p, &fattr->pre_size);
@@ -453,6 +399,21 @@ static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh)
}
/*
+ * nfstime3
+ *
+ * struct nfstime3 {
+ * uint32 seconds;
+ * uint32 nseconds;
+ * };
+ */
+static __be32 *xdr_encode_nfstime3(__be32 *p, const struct timespec *timep)
+{
+ *p++ = cpu_to_be32(timep->tv_sec);
+ *p++ = cpu_to_be32(timep->tv_nsec);
+ return p;
+}
+
+/*
* sattr3
*
* enum time_how {
@@ -538,7 +499,45 @@ static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr)
nbytes += 8;
p = xdr_reserve_space(xdr, nbytes);
- xdr_encode_sattr(p, attr);
+ if (attr->ia_valid & ATTR_MODE) {
+ *p++ = xdr_one;
+ *p++ = cpu_to_be32(attr->ia_mode & S_IALLUGO);
+ } else
+ *p++ = xdr_zero;
+
+ if (attr->ia_valid & ATTR_UID) {
+ *p++ = xdr_one;
+ *p++ = cpu_to_be32(attr->ia_uid);
+ } else
+ *p++ = xdr_zero;
+
+ if (attr->ia_valid & ATTR_GID) {
+ *p++ = xdr_one;
+ *p++ = cpu_to_be32(attr->ia_gid);
+ } else
+ *p++ = xdr_zero;
+
+ if (attr->ia_valid & ATTR_SIZE) {
+ *p++ = xdr_one;
+ p = xdr_encode_hyper(p, (u64)attr->ia_size);
+ } else
+ *p++ = xdr_zero;
+
+ if (attr->ia_valid & ATTR_ATIME_SET) {
+ *p++ = xdr_two;
+ p = xdr_encode_nfstime3(p, &attr->ia_atime);
+ } else if (attr->ia_valid & ATTR_ATIME) {
+ *p++ = xdr_one;
+ } else
+ *p++ = xdr_zero;
+
+ if (attr->ia_valid & ATTR_MTIME_SET) {
+ *p++ = xdr_two;
+ xdr_encode_nfstime3(p, &attr->ia_mtime);
+ } else if (attr->ia_valid & ATTR_MTIME) {
+ *p = xdr_one;
+ } else
+ *p = xdr_zero;
}
/*
@@ -605,7 +604,7 @@ static void encode_sattrguard3(struct xdr_stream *xdr,
if (args->guard) {
p = xdr_reserve_space(xdr, 4 + 8);
*p++ = xdr_one;
- xdr_encode_time3(p, &args->guardtime);
+ xdr_encode_nfstime3(p, &args->guardtime);
} else {
p = xdr_reserve_space(xdr, 4);
*p = xdr_zero;
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 13/31] NFS: Introduce new-style XDR decoding functions for NFSv2
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (11 preceding siblings ...)
2010-12-14 14:56 ` [PATCH 12/31] NFS: Update xdr_encode_foo() functions that we're keeping Chuck Lever
@ 2010-12-14 14:56 ` Chuck Lever
2010-12-15 21:49 ` Trond Myklebust
2010-12-14 14:56 ` [PATCH 14/31] NFS: Switch in new NFSv3 decoder functions Chuck Lever
` (18 subsequent siblings)
31 siblings, 1 reply; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:56 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
We'd like to prevent local buffer overflows caused by malicious or
broken servers. New xdr_stream style decoders can do that.
For efficiency, we also eventually want to be able to pass xdr_streams
from call_decode() to all XDR decoding functions, rather than building
an xdr_stream in every XDR decoding function in the kernel.
Static helper functions are left without the "inline" directive. This
allows the compiler to choose automatically how to optimize these for
size or speed.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs3xdr.c | 1534 +++++++++++++++++++++++++++++++++++++++++++++++---
include/linux/nfs3.h | 1
2 files changed, 1451 insertions(+), 84 deletions(-)
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index 119844d..0f07c6d 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -104,13 +104,6 @@ static const umode_t nfs_type2fmt[] = {
[NF3FIFO] = S_IFIFO,
};
-static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
-{
- dprintk("nfs: %s: prematurely hit end of receive buffer. "
- "Remaining buffer length is %tu words.\n",
- func, xdr->end - xdr->p);
-}
-
/*
* While encoding arguments, set up the reply buffer in advance to
* receive reply data directly into the page cache.
@@ -126,6 +119,16 @@ static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages,
xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len);
}
+/*
+ * Handle decode buffer overflows out-of-line.
+ */
+static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
+{
+ dprintk("NFS: %s prematurely hit the end of our receive buffer. "
+ "Remaining buffer length is %tu words.\n",
+ func, xdr->end - xdr->p);
+}
+
/*
* Common NFS XDR functions as inlines
@@ -284,6 +287,44 @@ static void encode_uint32(struct xdr_stream *xdr, u32 value)
*p = cpu_to_be32(value);
}
+static int decode_uint32(struct xdr_stream *xdr, u32 *value)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ *value = be32_to_cpup(p);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int decode_uint64(struct xdr_stream *xdr, u64 *value)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 8);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ xdr_decode_hyper(p, value);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * fileid3
+ *
+ * typedef uint64 fileid3;
+ */
+static int decode_fileid3(struct xdr_stream *xdr, u64 *fileid)
+{
+ return decode_uint64(xdr, fileid);
+}
+
/*
* filename3
*
@@ -299,6 +340,33 @@ static void encode_filename3(struct xdr_stream *xdr,
xdr_encode_opaque(p, name, length);
}
+static int decode_inline_filename3(struct xdr_stream *xdr,
+ const char **name, u32 *length)
+{
+ __be32 *p;
+ u32 count;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ count = be32_to_cpup(p);
+ if (count > NFS3_MAXNAMLEN)
+ goto out_nametoolong;
+ p = xdr_inline_decode(xdr, count);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ *name = (const char *)p;
+ *length = count;
+ return 0;
+
+out_nametoolong:
+ dprintk("NFS: returned filename too long: %u\n", count);
+ return -ENAMETOOLONG;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
/*
* nfspath3
*
@@ -312,6 +380,39 @@ static void encode_nfspath3(struct xdr_stream *xdr, struct page **pages,
xdr_write_pages(xdr, pages, 0, length);
}
+static int decode_nfspath3(struct xdr_stream *xdr)
+{
+ u32 recvd, count;
+ size_t hdrlen;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ count = be32_to_cpup(p);
+ if (unlikely(count >= xdr->buf->page_len || count > NFS3_MAXPATHLEN))
+ goto out_nametoolong;
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+ recvd = xdr->buf->len - hdrlen;
+ if (unlikely(count > recvd))
+ goto out_cheating;
+
+ xdr_read_pages(xdr, count);
+ xdr_terminate_string(xdr->buf, count);
+ return 0;
+
+out_nametoolong:
+ dprintk("NFS: returned pathname too long: %u\n", count);
+ return -ENAMETOOLONG;
+out_cheating:
+ dprintk("NFS: server cheating in pathname result: "
+ "count %u > recvd %u\n", count, recvd);
+ return -EIO;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
/*
* cookie3
*
@@ -322,6 +423,11 @@ static __be32 *xdr_encode_cookie3(__be32 *p, u64 cookie)
return xdr_encode_hyper(p, cookie);
}
+static int decode_cookie3(struct xdr_stream *xdr, u64 *cookie)
+{
+ return decode_uint64(xdr, cookie);
+}
+
/*
* cookieverf3
*
@@ -333,6 +439,20 @@ static __be32 *xdr_encode_cookieverf3(__be32 *p, const __be32 *verifier)
return p + XDR_QUADLEN(NFS3_COOKIEVERFSIZE);
}
+static int decode_cookieverf3(struct xdr_stream *xdr, __be32 *verifier)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ memcpy(verifier, p, NFS3_COOKIEVERFSIZE);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
/*
* createverf3
*
@@ -346,6 +466,54 @@ static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier)
memcpy(p, verifier, NFS3_CREATEVERFSIZE);
}
+static int decode_writeverf3(struct xdr_stream *xdr, __be32 *verifier)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS3_WRITEVERFSIZE);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ memcpy(verifier, p, NFS3_WRITEVERFSIZE);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * size3
+ *
+ * typedef uint64 size3;
+ */
+static __be32 *xdr_decode_size3(__be32 *p, u64 *size)
+{
+ return xdr_decode_hyper(p, size);
+}
+
+/*
+ * nfsstat3
+ *
+ * enum nfsstat3 {
+ * NFS3_OK = 0,
+ * ...
+ * }
+ */
+#define NFS3_OK NFS_OK
+
+static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ *status = be32_to_cpup(p);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
/*
* ftype3
*
@@ -398,6 +566,36 @@ static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh)
xdr_encode_opaque(p, fh->data, fh->size);
}
+static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh)
+{
+ u32 length;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ length = be32_to_cpup(p++);
+ if (unlikely(length > NFS3_FHSIZE))
+ goto out_toobig;
+ p = xdr_inline_decode(xdr, length);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ fh->size = length;
+ memcpy(fh->data, p, length);
+ return 0;
+out_toobig:
+ dprintk("NFS: file handle size (%u) too big\n", length);
+ return -E2BIG;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static void zero_nfs_fh3(struct nfs_fh *fh)
+{
+ memset(fh, 0, sizeof(*fh));
+}
+
/*
* nfstime3
*
@@ -541,6 +739,153 @@ static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr)
}
/*
+ * fattr3
+ *
+ * struct fattr3 {
+ * ftype3 type;
+ * mode3 mode;
+ * uint32 nlink;
+ * uid3 uid;
+ * gid3 gid;
+ * size3 size;
+ * size3 used;
+ * specdata3 rdev;
+ * uint64 fsid;
+ * fileid3 fileid;
+ * nfstime3 atime;
+ * nfstime3 mtime;
+ * nfstime3 ctime;
+ * };
+ */
+static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS3_fattr_sz << 2);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ xdr_decode_fattr(p, fattr);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * post_op_attr
+ *
+ * union post_op_attr switch (bool attributes_follow) {
+ * case TRUE:
+ * fattr3 attributes;
+ * case FALSE:
+ * void;
+ * };
+ */
+static int decode_post_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (*p != xdr_zero)
+ return decode_fattr3(xdr, fattr);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * wcc_attr
+ * struct wcc_attr {
+ * size3 size;
+ * nfstime3 mtime;
+ * nfstime3 ctime;
+ * };
+ */
+static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ xdr_decode_wcc_attr(p, fattr);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * pre_op_attr
+ * union pre_op_attr switch (bool attributes_follow) {
+ * case TRUE:
+ * wcc_attr attributes;
+ * case FALSE:
+ * void;
+ * };
+ *
+ * wcc_data
+ *
+ * struct wcc_data {
+ * pre_op_attr before;
+ * post_op_attr after;
+ * };
+ */
+static int decode_pre_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (*p != xdr_zero)
+ return decode_wcc_attr(xdr, fattr);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int decode_wcc_data(struct xdr_stream *xdr, struct nfs_fattr *fattr)
+{
+ int error;
+
+ error = decode_pre_op_attr(xdr, fattr);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(xdr, fattr);
+out:
+ return error;
+}
+
+/*
+ * post_op_fh3
+ *
+ * union post_op_fh3 switch (bool handle_follows) {
+ * case TRUE:
+ * nfs_fh3 handle;
+ * case FALSE:
+ * void;
+ * };
+ */
+static int decode_post_op_fh3(struct xdr_stream *xdr, struct nfs_fh *fh)
+{
+ __be32 *p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (*p != xdr_zero)
+ return decode_nfs_fh3(xdr, fh);
+ zero_nfs_fh3(fh);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
* diropargs3
*
* struct diropargs3 {
@@ -1108,78 +1453,6 @@ nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res
return pglen;
}
-__be32 *
-nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_server *server, int plus)
-{
- __be32 *p;
- struct nfs_entry old = *entry;
-
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
- goto out_overflow;
- if (!ntohl(*p++)) {
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
- goto out_overflow;
- if (!ntohl(*p++))
- return ERR_PTR(-EAGAIN);
- entry->eof = 1;
- return ERR_PTR(-EBADCOOKIE);
- }
-
- p = xdr_inline_decode(xdr, 12);
- if (unlikely(!p))
- goto out_overflow;
- p = xdr_decode_hyper(p, &entry->ino);
- entry->len = ntohl(*p++);
-
- p = xdr_inline_decode(xdr, entry->len + 8);
- if (unlikely(!p))
- goto out_overflow;
- entry->name = (const char *) p;
- p += XDR_QUADLEN(entry->len);
- entry->prev_cookie = entry->cookie;
- p = xdr_decode_hyper(p, &entry->cookie);
-
- entry->d_type = DT_UNKNOWN;
- if (plus) {
- entry->fattr->valid = 0;
- p = xdr_decode_post_op_attr_stream(xdr, entry->fattr);
- if (IS_ERR(p))
- goto out_overflow_exit;
- entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
- /* In fact, a post_op_fh3: */
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
- goto out_overflow;
- if (*p++) {
- p = xdr_decode_fhandle_stream(xdr, entry->fh);
- if (IS_ERR(p))
- goto out_overflow_exit;
- /* Ugh -- server reply was truncated */
- if (p == NULL) {
- dprintk("NFS: FH truncated\n");
- *entry = old;
- return ERR_PTR(-EAGAIN);
- }
- } else
- memset((u8*)(entry->fh), 0, sizeof(*entry->fh));
- }
-
- p = xdr_inline_peek(xdr, 8);
- if (p != NULL)
- entry->eof = !p[0] && p[1];
- else
- entry->eof = 0;
-
- return p;
-
-out_overflow:
- print_overflow_msg(__func__, xdr);
-out_overflow_exit:
- return ERR_PTR(-EAGAIN);
-}
-
/*
* 3.3.21 COMMIT3args
*
@@ -1275,13 +1548,47 @@ nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
}
/*
- * Decode status+wcc_data reply
- * SATTR, REMOVE, RMDIR
+ * 3.3.1 GETATTR3res
+ *
+ * struct GETATTR3resok {
+ * fattr3 obj_attributes;
+ * };
+ *
+ * union GETATTR3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * GETATTR3resok resok;
+ * default:
+ * void;
+ * };
*/
-static int
-nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
+static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs_fattr *result)
{
- int status;
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_fattr3(&xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
+
+/*
+ * Decode status+wcc_data reply
+ * SATTR, REMOVE, RMDIR
+ */
+static int
+nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
+{
+ int status;
if ((status = ntohl(*p++)))
status = nfs_stat_to_errno(status);
@@ -1289,6 +1596,46 @@ nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
return status;
}
+/*
+ * 3.3.2 SETATTR3res
+ *
+ * struct SETATTR3resok {
+ * wcc_data obj_wcc;
+ * };
+ *
+ * struct SETATTR3resfail {
+ * wcc_data obj_wcc;
+ * };
+ *
+ * union SETATTR3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * SETATTR3resok resok;
+ * default:
+ * SETATTR3resfail resfail;
+ * };
+ */
+static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs_fattr *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(&xdr, result);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
+}
+
static int
nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res)
{
@@ -1315,6 +1662,55 @@ nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res)
}
/*
+ * 3.3.3 LOOKUP3res
+ *
+ * struct LOOKUP3resok {
+ * nfs_fh3 object;
+ * post_op_attr obj_attributes;
+ * post_op_attr dir_attributes;
+ * };
+ *
+ * struct LOOKUP3resfail {
+ * post_op_attr dir_attributes;
+ * };
+ *
+ * union LOOKUP3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * LOOKUP3resok resok;
+ * default:
+ * LOOKUP3resfail resfail;
+ * };
+ */
+static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs3_diropres *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_nfs_fh3(&xdr, result->fh);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(&xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(&xdr, result->dir_attr);
+out:
+ return error;
+out_default:
+ error = decode_post_op_attr(&xdr, result->dir_attr);
+ if (unlikely(error))
+ goto out;
+ return nfs_stat_to_errno(status);
+}
+
+/*
* Decode ACCESS reply
*/
static int
@@ -1330,6 +1726,48 @@ nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res)
}
/*
+ * 3.3.4 ACCESS3res
+ *
+ * struct ACCESS3resok {
+ * post_op_attr obj_attributes;
+ * uint32 access;
+ * };
+ *
+ * struct ACCESS3resfail {
+ * post_op_attr obj_attributes;
+ * };
+ *
+ * union ACCESS3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * ACCESS3resok resok;
+ * default:
+ * ACCESS3resfail resfail;
+ * };
+ */
+static int nfs3_xdr_dec_access3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs3_accessres *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(&xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_uint32(&xdr, &result->access);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
+
+/*
* Decode READLINK reply
*/
static int
@@ -1376,6 +1814,48 @@ nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
}
/*
+ * 3.3.5 READLINK3res
+ *
+ * struct READLINK3resok {
+ * post_op_attr symlink_attributes;
+ * nfspath3 data;
+ * };
+ *
+ * struct READLINK3resfail {
+ * post_op_attr symlink_attributes;
+ * };
+ *
+ * union READLINK3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * READLINK3resok resok;
+ * default:
+ * READLINK3resfail resfail;
+ * };
+ */
+static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs_fattr *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(&xdr, result);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_nfspath3(&xdr);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
+
+/*
* Decode READ reply
*/
static int
@@ -1429,6 +1909,90 @@ nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
}
/*
+ * 3.3.6 READ3res
+ *
+ * struct READ3resok {
+ * post_op_attr file_attributes;
+ * count3 count;
+ * bool eof;
+ * opaque data<>;
+ * };
+ *
+ * struct READ3resfail {
+ * post_op_attr file_attributes;
+ * };
+ *
+ * union READ3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * READ3resok resok;
+ * default:
+ * READ3resfail resfail;
+ * };
+ */
+static int decode_read3resok(struct xdr_stream *xdr,
+ struct nfs_readres *result)
+{
+ u32 eof, count, ocount, recvd;
+ size_t hdrlen;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4 + 4 + 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ count = be32_to_cpup(p++);
+ eof = be32_to_cpup(p++);
+ ocount = be32_to_cpup(p++);
+ if (unlikely(ocount != count))
+ goto out_mismatch;
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+ recvd = xdr->buf->len - hdrlen;
+ if (unlikely(count > recvd))
+ goto out_cheating;
+
+out:
+ xdr_read_pages(xdr, count);
+ result->eof = eof;
+ result->count = count;
+ return count;
+out_mismatch:
+ dprintk("NFS: READ count doesn't match length of opaque: "
+ "count %u != ocount %u\n", count, ocount);
+ return -EIO;
+out_cheating:
+ dprintk("NFS: server cheating in read result: "
+ "count %u > recvd %u\n", count, recvd);
+ count = recvd;
+ eof = 0;
+ goto out;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs_readres *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(&xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+ error = decode_read3resok(&xdr, result);
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
+}
+
+/*
* Decode WRITE response
*/
static int
@@ -1451,6 +2015,78 @@ nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
}
/*
+ * 3.3.7 WRITE3res
+ *
+ * enum stable_how {
+ * UNSTABLE = 0,
+ * DATA_SYNC = 1,
+ * FILE_SYNC = 2
+ * };
+ *
+ * struct WRITE3resok {
+ * wcc_data file_wcc;
+ * count3 count;
+ * stable_how committed;
+ * writeverf3 verf;
+ * };
+ *
+ * struct WRITE3resfail {
+ * wcc_data file_wcc;
+ * };
+ *
+ * union WRITE3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * WRITE3resok resok;
+ * default:
+ * WRITE3resfail resfail;
+ * };
+ */
+static int decode_write3resok(struct xdr_stream *xdr,
+ struct nfs_writeres *result)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4 + 4 + NFS3_WRITEVERFSIZE);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ result->count = be32_to_cpup(p++);
+ result->verf->committed = be32_to_cpup(p++);
+ if (unlikely(result->verf->committed > NFS_FILE_SYNC))
+ goto out_badvalue;
+ memcpy(result->verf->verifier, p, NFS3_WRITEVERFSIZE);
+ return result->count;
+out_badvalue:
+ dprintk("NFS: bad stable_how value: %u\n", result->verf->committed);
+ return -EIO;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs_writeres *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(&xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+ error = decode_write3resok(&xdr, result);
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
+}
+
+/*
* Decode a CREATE response
*/
static int
@@ -1478,6 +2114,111 @@ nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res)
}
/*
+ * 3.3.8 CREATE3res
+ *
+ * struct CREATE3resok {
+ * post_op_fh3 obj;
+ * post_op_attr obj_attributes;
+ * wcc_data dir_wcc;
+ * };
+ *
+ * struct CREATE3resfail {
+ * wcc_data dir_wcc;
+ * };
+ *
+ * union CREATE3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * CREATE3resok resok;
+ * default:
+ * CREATE3resfail resfail;
+ * };
+ */
+static int decode_create3resok(struct xdr_stream *xdr,
+ struct nfs3_diropres *result)
+{
+ int error;
+
+ error = decode_post_op_fh3(xdr, result->fh);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ /* The server isn't required to return a file handle.
+ * If it didn't, force the client to perform a LOOKUP
+ * to determine the correct file handle and attribute
+ * values for the new object. */
+ if (result->fh->size == 0)
+ result->fattr->valid = 0;
+ error = decode_wcc_data(xdr, result->dir_attr);
+out:
+ return error;
+}
+
+static int nfs3_xdr_dec_create3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs3_diropres *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_create3resok(&xdr, result);
+out:
+ return error;
+out_default:
+ error = decode_wcc_data(&xdr, result->dir_attr);
+ if (unlikely(error))
+ goto out;
+ return nfs_stat_to_errno(status);
+}
+
+/*
+ * 3.3.12 REMOVE3res
+ *
+ * struct REMOVE3resok {
+ * wcc_data dir_wcc;
+ * };
+ *
+ * struct REMOVE3resfail {
+ * wcc_data dir_wcc;
+ * };
+ *
+ * union REMOVE3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * REMOVE3resok resok;
+ * default:
+ * REMOVE3resfail resfail;
+ * };
+ */
+static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs_removeres *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(&xdr, result->dir_attr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
+}
+
+/*
* Decode RENAME reply
*/
static int
@@ -1493,6 +2234,51 @@ nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs_renameres *res)
}
/*
+ * 3.3.14 RENAME3res
+ *
+ * struct RENAME3resok {
+ * wcc_data fromdir_wcc;
+ * wcc_data todir_wcc;
+ * };
+ *
+ * struct RENAME3resfail {
+ * wcc_data fromdir_wcc;
+ * wcc_data todir_wcc;
+ * };
+ *
+ * union RENAME3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * RENAME3resok resok;
+ * default:
+ * RENAME3resfail resfail;
+ * };
+ */
+static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs_renameres *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(&xdr, result->old_fattr);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(&xdr, result->new_fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
+}
+
+/*
* Decode LINK reply
*/
static int
@@ -1508,6 +2294,249 @@ nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res)
}
/*
+ * 3.3.15 LINK3res
+ *
+ * struct LINK3resok {
+ * post_op_attr file_attributes;
+ * wcc_data linkdir_wcc;
+ * };
+ *
+ * struct LINK3resfail {
+ * post_op_attr file_attributes;
+ * wcc_data linkdir_wcc;
+ * };
+ *
+ * union LINK3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * LINK3resok resok;
+ * default:
+ * LINK3resfail resfail;
+ * };
+ */
+static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs3_linkres *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(&xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(&xdr, result->dir_attr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
+}
+
+/**
+ * nfs3_decode_dirent - Decode a single NFSv3 directory entry stored in
+ * the local page cache
+ * @xdr: XDR stream where entry resides
+ * @entry: buffer to fill in with entry data
+ * @server: nfs_server data for this directory
+ * @plus: boolean indicating whether this should be a readdirplus entry
+ *
+ * Returns the position of the next item in the buffer, or an ERR_PTR.
+ *
+ * This function is not invoked during READDIR reply decoding, but
+ * rather whenever an application invokes the getdents(2) system call
+ * on a directory already in our cache.
+ *
+ * 3.3.16 entry3
+ *
+ * struct entry3 {
+ * fileid3 fileid;
+ * filename3 name;
+ * cookie3 cookie;
+ * fhandle3 filehandle;
+ * post_op_attr3 attributes;
+ * entry3 *nextentry;
+ * };
+ *
+ * 3.3.17 entryplus3
+ * struct entryplus3 {
+ * fileid3 fileid;
+ * filename3 name;
+ * cookie3 cookie;
+ * post_op_attr name_attributes;
+ * post_op_fh3 name_handle;
+ * entryplus3 *nextentry;
+ * };
+ */
+__be32 *nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
+ struct nfs_server *server, int plus)
+{
+ struct nfs_entry old = *entry;
+ __be32 *p;
+ int error;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (*p == xdr_zero) {
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (*p == xdr_zero)
+ return ERR_PTR(-EAGAIN);
+ entry->eof = 1;
+ return ERR_PTR(-EBADCOOKIE);
+ }
+
+ error = decode_fileid3(xdr, &entry->ino);
+ if (unlikely(error))
+ return ERR_PTR(error);
+
+ error = decode_inline_filename3(xdr, &entry->name, &entry->len);
+ if (unlikely(error))
+ return ERR_PTR(error);
+
+ entry->prev_cookie = entry->cookie;
+ error = decode_cookie3(xdr, &entry->cookie);
+ if (unlikely(error))
+ return ERR_PTR(error);
+
+ entry->d_type = DT_UNKNOWN;
+
+ if (plus) {
+ entry->fattr->valid = 0;
+ error = decode_post_op_attr(xdr, entry->fattr);
+ if (unlikely(error))
+ return ERR_PTR(error);
+ if (entry->fattr->valid & NFS_ATTR_FATTR_V3)
+ entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
+
+ /* In fact, a post_op_fh3: */
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (*p != xdr_zero) {
+ error = decode_nfs_fh3(xdr, entry->fh);
+ if (unlikely(error)) {
+ if (error == -E2BIG)
+ goto out_truncated;
+ return ERR_PTR(error);
+ }
+ } else
+ zero_nfs_fh3(entry->fh);
+ }
+
+ /* Peek at the next entry to see if we're at EOD */
+ p = xdr_inline_peek(xdr, 4 + 4);
+ entry->eof = 0;
+ if (p != NULL)
+ entry->eof = (p[0] == xdr_zero) && (p[1] != xdr_zero);
+ return p;
+
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return ERR_PTR(-EAGAIN);
+out_truncated:
+ dprintk("NFS: directory entry contains invalid file handle\n");
+ *entry = old;
+ return ERR_PTR(-EAGAIN);
+}
+
+/*
+ * 3.3.16 READDIR3res
+ *
+ * struct dirlist3 {
+ * entry3 *entries;
+ * bool eof;
+ * };
+ *
+ * struct READDIR3resok {
+ * post_op_attr dir_attributes;
+ * cookieverf3 cookieverf;
+ * dirlist3 reply;
+ * };
+ *
+ * struct READDIR3resfail {
+ * post_op_attr dir_attributes;
+ * };
+ *
+ * union READDIR3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * READDIR3resok resok;
+ * default:
+ * READDIR3resfail resfail;
+ * };
+ *
+ * Read the directory contents into the page cache, but otherwise
+ * don't touch them. The actual decoding is done by nfs3_decode_entry()
+ * during subsequent nfs_readdir() calls.
+ */
+static int decode_dirlist3(struct xdr_stream *xdr)
+{
+ u32 recvd, pglen;
+ size_t hdrlen;
+
+ pglen = xdr->buf->page_len;
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+ recvd = xdr->buf->len - hdrlen;
+ if (unlikely(pglen > recvd))
+ goto out_cheating;
+out:
+ xdr_read_pages(xdr, pglen);
+ return pglen;
+out_cheating:
+ dprintk("NFS: server cheating in readdir result: "
+ "pglen %u > recvd %u\n", pglen, recvd);
+ pglen = recvd;
+ goto out;
+}
+
+static int decode_readdir3resok(struct xdr_stream *xdr,
+ struct nfs3_readdirres *result)
+{
+ int error;
+
+ error = decode_post_op_attr(xdr, result->dir_attr);
+ if (unlikely(error))
+ goto out;
+ /* XXX: do we need to check if result->verf != NULL ? */
+ error = decode_cookieverf3(xdr, result->verf);
+ if (unlikely(error))
+ goto out;
+ error = decode_dirlist3(xdr);
+out:
+ return error;
+}
+
+static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs3_readdirres *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_readdir3resok(&xdr, result);
+out:
+ return error;
+out_default:
+ error = decode_post_op_attr(&xdr, result->dir_attr);
+ if (unlikely(error))
+ goto out;
+ return nfs_stat_to_errno(status);
+}
+
+/*
* Decode FSSTAT reply
*/
static int
@@ -1533,6 +2562,75 @@ nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res)
}
/*
+ * 3.3.18 FSSTAT3res
+ *
+ * struct FSSTAT3resok {
+ * post_op_attr obj_attributes;
+ * size3 tbytes;
+ * size3 fbytes;
+ * size3 abytes;
+ * size3 tfiles;
+ * size3 ffiles;
+ * size3 afiles;
+ * uint32 invarsec;
+ * };
+ *
+ * struct FSSTAT3resfail {
+ * post_op_attr obj_attributes;
+ * };
+ *
+ * union FSSTAT3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * FSSTAT3resok resok;
+ * default:
+ * FSSTAT3resfail resfail;
+ * };
+ */
+static int decode_fsstat3resok(struct xdr_stream *xdr,
+ struct nfs_fsstat *result)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 8 * 6 + 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ p = xdr_decode_size3(p, &result->tbytes);
+ p = xdr_decode_size3(p, &result->fbytes);
+ p = xdr_decode_size3(p, &result->abytes);
+ p = xdr_decode_size3(p, &result->tfiles);
+ p = xdr_decode_size3(p, &result->ffiles);
+ xdr_decode_size3(p, &result->afiles);
+ /* ignore invarsec */
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs_fsstat *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(&xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+ error = decode_fsstat3resok(&xdr, result);
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
+}
+
+/*
* Decode FSINFO reply
*/
static int
@@ -1562,6 +2660,83 @@ nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res)
}
/*
+ * 3.3.19 FSINFO3res
+ *
+ * struct FSINFO3resok {
+ * post_op_attr obj_attributes;
+ * uint32 rtmax;
+ * uint32 rtpref;
+ * uint32 rtmult;
+ * uint32 wtmax;
+ * uint32 wtpref;
+ * uint32 wtmult;
+ * uint32 dtpref;
+ * size3 maxfilesize;
+ * nfstime3 time_delta;
+ * uint32 properties;
+ * };
+ *
+ * struct FSINFO3resfail {
+ * post_op_attr obj_attributes;
+ * };
+ *
+ * union FSINFO3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * FSINFO3resok resok;
+ * default:
+ * FSINFO3resfail resfail;
+ * };
+ */
+static int decode_fsinfo3resok(struct xdr_stream *xdr,
+ struct nfs_fsinfo *result)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4 * 7 + 8 + 8 + 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ result->rtmax = be32_to_cpup(p++);
+ result->rtpref = be32_to_cpup(p++);
+ result->rtmult = be32_to_cpup(p++);
+ result->wtmax = be32_to_cpup(p++);
+ result->wtpref = be32_to_cpup(p++);
+ result->wtmult = be32_to_cpup(p++);
+ result->dtpref = be32_to_cpup(p++);
+ p = xdr_decode_size3(p, &result->maxfilesize);
+ xdr_decode_time3(p, &result->time_delta);
+
+ /* ignore properties */
+ result->lease_time = 0;
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs_fsinfo *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(&xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+ error = decode_fsinfo3resok(&xdr, result);
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
+}
+
+/*
* Decode PATHCONF reply
*/
static int
@@ -1582,6 +2757,70 @@ nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res)
}
/*
+ * 3.3.20 PATHCONF3res
+ *
+ * struct PATHCONF3resok {
+ * post_op_attr obj_attributes;
+ * uint32 linkmax;
+ * uint32 name_max;
+ * bool no_trunc;
+ * bool chown_restricted;
+ * bool case_insensitive;
+ * bool case_preserving;
+ * };
+ *
+ * struct PATHCONF3resfail {
+ * post_op_attr obj_attributes;
+ * };
+ *
+ * union PATHCONF3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * PATHCONF3resok resok;
+ * default:
+ * PATHCONF3resfail resfail;
+ * };
+ */
+static int decode_pathconf3resok(struct xdr_stream *xdr,
+ struct nfs_pathconf *result)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4 * 6);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ result->max_link = be32_to_cpup(p++);
+ result->max_namelen = be32_to_cpup(p);
+ /* ignore remaining fields */
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs_pathconf *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_post_op_attr(&xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+ error = decode_pathconf3resok(&xdr, result);
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
+}
+
+/*
* Decode COMMIT reply
*/
static int
@@ -1599,6 +2838,48 @@ nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
return 0;
}
+/*
+ * 3.3.21 COMMIT3res
+ *
+ * struct COMMIT3resok {
+ * wcc_data file_wcc;
+ * writeverf3 verf;
+ * };
+ *
+ * struct COMMIT3resfail {
+ * wcc_data file_wcc;
+ * };
+ *
+ * union COMMIT3res switch (nfsstat3 status) {
+ * case NFS3_OK:
+ * COMMIT3resok resok;
+ * default:
+ * COMMIT3resfail resfail;
+ * };
+ */
+static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs_writeres *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ error = decode_wcc_data(&xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_status;
+ error = decode_writeverf3(&xdr, result->verf->verifier);
+out:
+ return error;
+out_status:
+ return nfs_stat_to_errno(status);
+}
+
#ifdef CONFIG_NFS_V3_ACL
/*
* Decode GETACL reply
@@ -1632,6 +2913,70 @@ nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p,
return (err > 0) ? 0 : err;
}
+static inline int decode_getacl3resok(struct xdr_stream *xdr,
+ struct nfs3_getaclres *result)
+{
+ struct posix_acl **acl;
+ unsigned int *aclcnt;
+ size_t hdrlen;
+ int error;
+
+ error = decode_post_op_attr(xdr, result->fattr);
+ if (unlikely(error))
+ goto out;
+ error = decode_uint32(xdr, &result->mask);
+ if (unlikely(error))
+ goto out;
+ error = -EINVAL;
+ if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
+ goto out;
+
+ hdrlen = (u8 *)xdr->p - (u8 *)xdr->iov->iov_base;
+
+ acl = NULL;
+ if (result->mask & NFS_ACL)
+ acl = &result->acl_access;
+ aclcnt = NULL;
+ if (result->mask & NFS_ACLCNT)
+ aclcnt = &result->acl_access_count;
+ error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl);
+ if (unlikely(error <= 0))
+ goto out;
+
+ acl = NULL;
+ if (result->mask & NFS_DFACL)
+ acl = &result->acl_default;
+ aclcnt = NULL;
+ if (result->mask & NFS_DFACLCNT)
+ aclcnt = &result->acl_default_count;
+ error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl);
+ if (unlikely(error <= 0))
+ return error;
+ error = 0;
+out:
+ return error;
+}
+
+static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs3_getaclres *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_getacl3resok(&xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
+
/*
* Decode setacl reply.
*/
@@ -1645,6 +2990,27 @@ nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
xdr_decode_post_op_attr(p, fattr);
return 0;
}
+
+static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req, __be32 *p,
+ struct nfs_fattr *result)
+{
+ struct xdr_stream xdr;
+ enum nfs_stat status;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_nfsstat3(&xdr, &status);
+ if (unlikely(error))
+ goto out;
+ if (status != NFS3_OK)
+ goto out_default;
+ error = decode_post_op_attr(&xdr, result);
+out:
+ return error;
+out_default:
+ return nfs_stat_to_errno(status);
+}
+
#endif /* CONFIG_NFS_V3_ACL */
#define PROC(proc, argtype, restype, timer) \
diff --git a/include/linux/nfs3.h b/include/linux/nfs3.h
index e2ee14f..6ccfe3b 100644
--- a/include/linux/nfs3.h
+++ b/include/linux/nfs3.h
@@ -13,6 +13,7 @@
#define NFS3_COOKIESIZE 4
#define NFS3_CREATEVERFSIZE 8
#define NFS3_COOKIEVERFSIZE 8
+#define NFS3_WRITEVERFSIZE 8
#define NFS3_FIFO_DEV (-1)
#define NFS3MODE_FMT 0170000
#define NFS3MODE_DIR 0040000
^ permalink raw reply related [flat|nested] 53+ messages in thread* Re: [PATCH 13/31] NFS: Introduce new-style XDR decoding functions for NFSv2
2010-12-14 14:56 ` [PATCH 13/31] NFS: Introduce new-style XDR decoding functions for NFSv2 Chuck Lever
@ 2010-12-15 21:49 ` Trond Myklebust
2010-12-16 2:44 ` Chuck Lever
0 siblings, 1 reply; 53+ messages in thread
From: Trond Myklebust @ 2010-12-15 21:49 UTC (permalink / raw)
To: Chuck Lever; +Cc: linux-nfs
On Tue, 2010-12-14 at 09:56 -0500, Chuck Lever wrote:
> We'd like to prevent local buffer overflows caused by malicious or
> broken servers. New xdr_stream style decoders can do that.
>
> For efficiency, we also eventually want to be able to pass xdr_streams
> from call_decode() to all XDR decoding functions, rather than building
> an xdr_stream in every XDR decoding function in the kernel.
>
> Static helper functions are left without the "inline" directive. This
> allows the compiler to choose automatically how to optimize these for
> size or speed.
>
> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
> Tested-by: J. Bruce Fields <bfields@redhat.com>
> ---
>
> fs/nfs/nfs3xdr.c | 1534 +++++++++++++++++++++++++++++++++++++++++++++++---
> include/linux/nfs3.h | 1
> 2 files changed, 1451 insertions(+), 84 deletions(-)
Doesn't look like NFSv2 to me...
--
Trond Myklebust
Linux NFS client maintainer
NetApp
Trond.Myklebust@netapp.com
www.netapp.com
^ permalink raw reply [flat|nested] 53+ messages in thread
* Re: [PATCH 13/31] NFS: Introduce new-style XDR decoding functions for NFSv2
2010-12-15 21:49 ` Trond Myklebust
@ 2010-12-16 2:44 ` Chuck Lever
0 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-16 2:44 UTC (permalink / raw)
To: Trond Myklebust; +Cc: linux-nfs
On Dec 15, 2010, at 4:49 PM, Trond Myklebust wrote:
> On Tue, 2010-12-14 at 09:56 -0500, Chuck Lever wrote:
>> We'd like to prevent local buffer overflows caused by malicious or
>> broken servers. New xdr_stream style decoders can do that.
>>
>> For efficiency, we also eventually want to be able to pass xdr_streams
>> from call_decode() to all XDR decoding functions, rather than building
>> an xdr_stream in every XDR decoding function in the kernel.
>>
>> Static helper functions are left without the "inline" directive. This
>> allows the compiler to choose automatically how to optimize these for
>> size or speed.
>>
>> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
>> Tested-by: J. Bruce Fields <bfields@redhat.com>
>> ---
>>
>> fs/nfs/nfs3xdr.c | 1534 +++++++++++++++++++++++++++++++++++++++++++++++---
>> include/linux/nfs3.h | 1
>> 2 files changed, 1451 insertions(+), 84 deletions(-)
>
> Doesn't look like NFSv2 to me...
You have my permission to correct the short definition.
--
Chuck Lever
chuck[dot]lever[at]oracle[dot]com
^ permalink raw reply [flat|nested] 53+ messages in thread
* [PATCH 14/31] NFS: Switch in new NFSv3 decoder functions
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (12 preceding siblings ...)
2010-12-14 14:56 ` [PATCH 13/31] NFS: Introduce new-style XDR decoding functions for NFSv2 Chuck Lever
@ 2010-12-14 14:56 ` Chuck Lever
2010-12-14 14:56 ` [PATCH 15/31] NFS: Remove unused old " Chuck Lever
` (17 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:56 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
The naming scheme of the new decoder functions, which follows the
NFSv4 XDR decoder functions, is slightly different than the scheme
used for the old functions. Rename the functions as a separate
step to keep the patches clean.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs3xdr.c | 64 +++++++++++++++++++++++++-----------------------------
1 files changed, 30 insertions(+), 34 deletions(-)
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index 0f07c6d..19c7911 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -38,14 +38,10 @@
#define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2))
#define NFS3_fattr_sz (21)
#define NFS3_cookieverf_sz (NFS3_COOKIEVERFSIZE>>2)
-#define NFS3_wcc_attr_sz (6)
+#define NFS3_wcc_attr_sz (6)
#define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz)
#define NFS3_post_op_attr_sz (1+NFS3_fattr_sz)
-#define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz)
-#define NFS3_fsstat_sz
-#define NFS3_fsinfo_sz
-#define NFS3_pathconf_sz
-#define NFS3_entry_sz (NFS3_filename_sz+3)
+#define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz)
#define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz)
#define NFS3_getattrargs_sz (NFS3_fh_sz)
@@ -66,9 +62,9 @@
#define NFS3_readdirplusargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+4)
#define NFS3_commitargs_sz (NFS3_fh_sz+3)
-#define NFS3_attrstat_sz (1+NFS3_fattr_sz)
-#define NFS3_wccstat_sz (1+NFS3_wcc_data_sz)
-#define NFS3_removeres_sz (NFS3_wccstat_sz)
+#define NFS3_getattrres_sz (1+NFS3_fattr_sz)
+#define NFS3_setattrres_sz (1+NFS3_wcc_data_sz)
+#define NFS3_removeres_sz (NFS3_setattrres_sz)
#define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz))
#define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1)
#define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1)
@@ -3017,36 +3013,36 @@ out_default:
[NFS3PROC_##proc] = { \
.p_proc = NFS3PROC_##proc, \
.p_encode = (kxdrproc_t)nfs3_xdr_enc_##argtype##3args, \
- .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \
+ .p_decode = (kxdrproc_t)nfs3_xdr_dec_##restype##3res, \
.p_arglen = NFS3_##argtype##args_sz, \
- .p_replen = NFS3_##restype##_sz, \
+ .p_replen = NFS3_##restype##res_sz, \
.p_timer = timer, \
.p_statidx = NFS3PROC_##proc, \
.p_name = #proc, \
}
struct rpc_procinfo nfs3_procedures[] = {
- PROC(GETATTR, getattr, attrstat, 1),
- PROC(SETATTR, setattr, wccstat, 0),
- PROC(LOOKUP, lookup, lookupres, 2),
- PROC(ACCESS, access, accessres, 1),
- PROC(READLINK, readlink, readlinkres, 3),
- PROC(READ, read, readres, 3),
- PROC(WRITE, write, writeres, 4),
- PROC(CREATE, create, createres, 0),
- PROC(MKDIR, mkdir, createres, 0),
- PROC(SYMLINK, symlink, createres, 0),
- PROC(MKNOD, mknod, createres, 0),
- PROC(REMOVE, remove, removeres, 0),
- PROC(RMDIR, lookup, wccstat, 0),
- PROC(RENAME, rename, renameres, 0),
- PROC(LINK, link, linkres, 0),
- PROC(READDIR, readdir, readdirres, 3),
- PROC(READDIRPLUS, readdirplus, readdirres, 3),
- PROC(FSSTAT, getattr, fsstatres, 0),
- PROC(FSINFO, getattr, fsinfores, 0),
- PROC(PATHCONF, getattr, pathconfres, 0),
- PROC(COMMIT, commit, commitres, 5),
+ PROC(GETATTR, getattr, getattr, 1),
+ PROC(SETATTR, setattr, setattr, 0),
+ PROC(LOOKUP, lookup, lookup, 2),
+ PROC(ACCESS, access, access, 1),
+ PROC(READLINK, readlink, readlink, 3),
+ PROC(READ, read, read, 3),
+ PROC(WRITE, write, write, 4),
+ PROC(CREATE, create, create, 0),
+ PROC(MKDIR, mkdir, create, 0),
+ PROC(SYMLINK, symlink, create, 0),
+ PROC(MKNOD, mknod, create, 0),
+ PROC(REMOVE, remove, remove, 0),
+ PROC(RMDIR, lookup, setattr, 0),
+ PROC(RENAME, rename, rename, 0),
+ PROC(LINK, link, link, 0),
+ PROC(READDIR, readdir, readdir, 3),
+ PROC(READDIRPLUS, readdirplus, readdir, 3),
+ PROC(FSSTAT, getattr, fsstat, 0),
+ PROC(FSINFO, getattr, fsinfo, 0),
+ PROC(PATHCONF, getattr, pathconf, 0),
+ PROC(COMMIT, commit, commit, 5),
};
struct rpc_version nfs_version3 = {
@@ -3060,7 +3056,7 @@ static struct rpc_procinfo nfs3_acl_procedures[] = {
[ACLPROC3_GETACL] = {
.p_proc = ACLPROC3_GETACL,
.p_encode = (kxdrproc_t)nfs3_xdr_enc_getacl3args,
- .p_decode = (kxdrproc_t) nfs3_xdr_getaclres,
+ .p_decode = (kxdrproc_t)nfs3_xdr_dec_getacl3res,
.p_arglen = ACL3_getaclargs_sz,
.p_replen = ACL3_getaclres_sz,
.p_timer = 1,
@@ -3069,7 +3065,7 @@ static struct rpc_procinfo nfs3_acl_procedures[] = {
[ACLPROC3_SETACL] = {
.p_proc = ACLPROC3_SETACL,
.p_encode = (kxdrproc_t)nfs3_xdr_enc_setacl3args,
- .p_decode = (kxdrproc_t) nfs3_xdr_setaclres,
+ .p_decode = (kxdrproc_t)nfs3_xdr_dec_setacl3res,
.p_arglen = ACL3_setaclargs_sz,
.p_replen = ACL3_setaclres_sz,
.p_timer = 0,
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 15/31] NFS: Remove unused old NFSv3 decoder functions
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (13 preceding siblings ...)
2010-12-14 14:56 ` [PATCH 14/31] NFS: Switch in new NFSv3 decoder functions Chuck Lever
@ 2010-12-14 14:56 ` Chuck Lever
2010-12-14 14:57 ` [PATCH 16/31] NFS: Move and update xdr_decode_foo() functions that we're keeping Chuck Lever
` (16 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:56 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up. Remove unused legacy result decoder functions, and any
now unused decoder helper functions.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs3xdr.c | 512 ------------------------------------------------------
1 files changed, 4 insertions(+), 508 deletions(-)
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index 19c7911..586587f 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -129,38 +129,6 @@ static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
/*
* Common NFS XDR functions as inlines
*/
-static inline __be32 *
-xdr_decode_fhandle(__be32 *p, struct nfs_fh *fh)
-{
- if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) {
- memcpy(fh->data, p, fh->size);
- return p + XDR_QUADLEN(fh->size);
- }
- return NULL;
-}
-
-static inline __be32 *
-xdr_decode_fhandle_stream(struct xdr_stream *xdr, struct nfs_fh *fh)
-{
- __be32 *p;
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
- goto out_overflow;
- fh->size = ntohl(*p++);
-
- if (fh->size <= NFS3_FHSIZE) {
- p = xdr_inline_decode(xdr, fh->size);
- if (unlikely(!p))
- goto out_overflow;
- memcpy(fh->data, p, fh->size);
- return p + XDR_QUADLEN(fh->size);
- }
- return NULL;
-
-out_overflow:
- print_overflow_msg(__func__, xdr);
- return ERR_PTR(-EIO);
-}
/*
* Encode/decode time.
@@ -221,51 +189,6 @@ xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr)
return p;
}
-static inline __be32 *
-xdr_decode_post_op_attr(__be32 *p, struct nfs_fattr *fattr)
-{
- if (*p++)
- p = xdr_decode_fattr(p, fattr);
- return p;
-}
-
-static inline __be32 *
-xdr_decode_post_op_attr_stream(struct xdr_stream *xdr, struct nfs_fattr *fattr)
-{
- __be32 *p;
-
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(!p))
- goto out_overflow;
- if (ntohl(*p++)) {
- p = xdr_inline_decode(xdr, 84);
- if (unlikely(!p))
- goto out_overflow;
- p = xdr_decode_fattr(p, fattr);
- }
- return p;
-out_overflow:
- print_overflow_msg(__func__, xdr);
- return ERR_PTR(-EIO);
-}
-
-static inline __be32 *
-xdr_decode_pre_op_attr(__be32 *p, struct nfs_fattr *fattr)
-{
- if (*p++)
- return xdr_decode_wcc_attr(p, fattr);
- return p;
-}
-
-
-static inline __be32 *
-xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr)
-{
- p = xdr_decode_pre_op_attr(p, fattr);
- return xdr_decode_post_op_attr(p, fattr);
-}
-
-
/*
* Encode/decode NFSv3 basic data types
*
@@ -1404,52 +1327,6 @@ static int nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, __be32 *p,
}
/*
- * Decode the result of a readdir call.
- * We just check for syntactical correctness.
- */
-static int
-nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res)
-{
- struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
- struct kvec *iov = rcvbuf->head;
- struct page **page;
- size_t hdrlen;
- u32 recvd, pglen;
- int status;
-
- status = ntohl(*p++);
- /* Decode post_op_attrs */
- p = xdr_decode_post_op_attr(p, res->dir_attr);
- if (status)
- return nfs_stat_to_errno(status);
- /* Decode verifier cookie */
- if (res->verf) {
- res->verf[0] = *p++;
- res->verf[1] = *p++;
- } else {
- p += 2;
- }
-
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
- if (iov->iov_len < hdrlen) {
- dprintk("NFS: READDIR reply header overflowed:"
- "length %Zu > %Zu\n", hdrlen, iov->iov_len);
- return -errno_NFSERR_IO;
- } else if (iov->iov_len != hdrlen) {
- dprintk("NFS: READDIR header is short. iovec will be shifted.\n");
- xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
- }
-
- pglen = rcvbuf->page_len;
- recvd = rcvbuf->len - hdrlen;
- if (pglen > recvd)
- pglen = recvd;
- page = rcvbuf->pages;
-
- return pglen;
-}
-
-/*
* 3.3.21 COMMIT3args
*
* struct COMMIT3args {
@@ -1526,22 +1403,11 @@ static int nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, __be32 *p,
#endif /* CONFIG_NFS_V3_ACL */
/*
- * NFS XDR decode functions
- */
-
-/*
- * Decode attrstat reply.
+ * NFSv3 XDR decode functions
+ *
+ * NFSv3 result types are defined in section 3.3 of RFC 1813:
+ * "NFS Version 3 Protocol Specification".
*/
-static int
-nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
-{
- int status;
-
- if ((status = ntohl(*p++)))
- return nfs_stat_to_errno(status);
- xdr_decode_fattr(p, fattr);
- return 0;
-}
/*
* 3.3.1 GETATTR3res
@@ -1578,21 +1444,6 @@ out_default:
}
/*
- * Decode status+wcc_data reply
- * SATTR, REMOVE, RMDIR
- */
-static int
-nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
-{
- int status;
-
- if ((status = ntohl(*p++)))
- status = nfs_stat_to_errno(status);
- xdr_decode_wcc_data(p, fattr);
- return status;
-}
-
-/*
* 3.3.2 SETATTR3res
*
* struct SETATTR3resok {
@@ -1632,31 +1483,6 @@ out_status:
return nfs_stat_to_errno(status);
}
-static int
-nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res)
-{
- return nfs3_xdr_wccstat(req, p, res->dir_attr);
-}
-
-/*
- * Decode LOOKUP reply
- */
-static int
-nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res)
-{
- int status;
-
- if ((status = ntohl(*p++))) {
- status = nfs_stat_to_errno(status);
- } else {
- if (!(p = xdr_decode_fhandle(p, res->fh)))
- return -errno_NFSERR_IO;
- p = xdr_decode_post_op_attr(p, res->fattr);
- }
- xdr_decode_post_op_attr(p, res->dir_attr);
- return status;
-}
-
/*
* 3.3.3 LOOKUP3res
*
@@ -1707,21 +1533,6 @@ out_default:
}
/*
- * Decode ACCESS reply
- */
-static int
-nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res)
-{
- int status = ntohl(*p++);
-
- p = xdr_decode_post_op_attr(p, res->fattr);
- if (status)
- return nfs_stat_to_errno(status);
- res->access = ntohl(*p++);
- return 0;
-}
-
-/*
* 3.3.4 ACCESS3res
*
* struct ACCESS3resok {
@@ -1764,52 +1575,6 @@ out_default:
}
/*
- * Decode READLINK reply
- */
-static int
-nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
-{
- struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
- struct kvec *iov = rcvbuf->head;
- size_t hdrlen;
- u32 len, recvd;
- int status;
-
- status = ntohl(*p++);
- p = xdr_decode_post_op_attr(p, fattr);
-
- if (status != 0)
- return nfs_stat_to_errno(status);
-
- /* Convert length of symlink */
- len = ntohl(*p++);
- if (len >= rcvbuf->page_len) {
- dprintk("nfs: server returned giant symlink!\n");
- return -ENAMETOOLONG;
- }
-
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
- if (iov->iov_len < hdrlen) {
- dprintk("NFS: READLINK reply header overflowed:"
- "length %Zu > %Zu\n", hdrlen, iov->iov_len);
- return -errno_NFSERR_IO;
- } else if (iov->iov_len != hdrlen) {
- dprintk("NFS: READLINK header is short. "
- "iovec will be shifted.\n");
- xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen);
- }
- recvd = req->rq_rcv_buf.len - hdrlen;
- if (recvd < len) {
- dprintk("NFS: server cheating in readlink reply: "
- "count %u > recvd %u\n", len, recvd);
- return -EIO;
- }
-
- xdr_terminate_string(rcvbuf, len);
- return 0;
-}
-
-/*
* 3.3.5 READLINK3res
*
* struct READLINK3resok {
@@ -1852,59 +1617,6 @@ out_default:
}
/*
- * Decode READ reply
- */
-static int
-nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
-{
- struct kvec *iov = req->rq_rcv_buf.head;
- size_t hdrlen;
- u32 count, ocount, recvd;
- int status;
-
- status = ntohl(*p++);
- p = xdr_decode_post_op_attr(p, res->fattr);
-
- if (status != 0)
- return nfs_stat_to_errno(status);
-
- /* Decode reply count and EOF flag. NFSv3 is somewhat redundant
- * in that it puts the count both in the res struct and in the
- * opaque data count. */
- count = ntohl(*p++);
- res->eof = ntohl(*p++);
- ocount = ntohl(*p++);
-
- if (ocount != count) {
- dprintk("NFS: READ count doesn't match RPC opaque count.\n");
- return -errno_NFSERR_IO;
- }
-
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
- if (iov->iov_len < hdrlen) {
- dprintk("NFS: READ reply header overflowed:"
- "length %Zu > %Zu\n", hdrlen, iov->iov_len);
- return -errno_NFSERR_IO;
- } else if (iov->iov_len != hdrlen) {
- dprintk("NFS: READ header is short. iovec will be shifted.\n");
- xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen);
- }
-
- recvd = req->rq_rcv_buf.len - hdrlen;
- if (count > recvd) {
- dprintk("NFS: server cheating in read reply: "
- "count %u > recvd %u\n", count, recvd);
- count = recvd;
- res->eof = 0;
- }
-
- if (count < res->count)
- res->count = count;
-
- return count;
-}
-
-/*
* 3.3.6 READ3res
*
* struct READ3resok {
@@ -1989,28 +1701,6 @@ out_status:
}
/*
- * Decode WRITE response
- */
-static int
-nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
-{
- int status;
-
- status = ntohl(*p++);
- p = xdr_decode_wcc_data(p, res->fattr);
-
- if (status != 0)
- return nfs_stat_to_errno(status);
-
- res->count = ntohl(*p++);
- res->verf->committed = (enum nfs3_stable_how)ntohl(*p++);
- res->verf->verifier[0] = *p++;
- res->verf->verifier[1] = *p++;
-
- return res->count;
-}
-
-/*
* 3.3.7 WRITE3res
*
* enum stable_how {
@@ -2083,33 +1773,6 @@ out_status:
}
/*
- * Decode a CREATE response
- */
-static int
-nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res)
-{
- int status;
-
- status = ntohl(*p++);
- if (status == 0) {
- if (*p++) {
- if (!(p = xdr_decode_fhandle(p, res->fh)))
- return -errno_NFSERR_IO;
- p = xdr_decode_post_op_attr(p, res->fattr);
- } else {
- memset(res->fh, 0, sizeof(*res->fh));
- /* Do decode post_op_attr but set it to NULL */
- p = xdr_decode_post_op_attr(p, res->fattr);
- res->fattr->valid = 0;
- }
- } else {
- status = nfs_stat_to_errno(status);
- }
- p = xdr_decode_wcc_data(p, res->dir_attr);
- return status;
-}
-
-/*
* 3.3.8 CREATE3res
*
* struct CREATE3resok {
@@ -2215,21 +1878,6 @@ out_status:
}
/*
- * Decode RENAME reply
- */
-static int
-nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs_renameres *res)
-{
- int status;
-
- if ((status = ntohl(*p++)) != 0)
- status = nfs_stat_to_errno(status);
- p = xdr_decode_wcc_data(p, res->old_fattr);
- p = xdr_decode_wcc_data(p, res->new_fattr);
- return status;
-}
-
-/*
* 3.3.14 RENAME3res
*
* struct RENAME3resok {
@@ -2275,21 +1923,6 @@ out_status:
}
/*
- * Decode LINK reply
- */
-static int
-nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res)
-{
- int status;
-
- if ((status = ntohl(*p++)) != 0)
- status = nfs_stat_to_errno(status);
- p = xdr_decode_post_op_attr(p, res->fattr);
- p = xdr_decode_wcc_data(p, res->dir_attr);
- return status;
-}
-
-/*
* 3.3.15 LINK3res
*
* struct LINK3resok {
@@ -2533,31 +2166,6 @@ out_default:
}
/*
- * Decode FSSTAT reply
- */
-static int
-nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res)
-{
- int status;
-
- status = ntohl(*p++);
-
- p = xdr_decode_post_op_attr(p, res->fattr);
- if (status != 0)
- return nfs_stat_to_errno(status);
-
- p = xdr_decode_hyper(p, &res->tbytes);
- p = xdr_decode_hyper(p, &res->fbytes);
- p = xdr_decode_hyper(p, &res->abytes);
- p = xdr_decode_hyper(p, &res->tfiles);
- p = xdr_decode_hyper(p, &res->ffiles);
- p = xdr_decode_hyper(p, &res->afiles);
-
- /* ignore invarsec */
- return 0;
-}
-
-/*
* 3.3.18 FSSTAT3res
*
* struct FSSTAT3resok {
@@ -2627,35 +2235,6 @@ out_status:
}
/*
- * Decode FSINFO reply
- */
-static int
-nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res)
-{
- int status;
-
- status = ntohl(*p++);
-
- p = xdr_decode_post_op_attr(p, res->fattr);
- if (status != 0)
- return nfs_stat_to_errno(status);
-
- res->rtmax = ntohl(*p++);
- res->rtpref = ntohl(*p++);
- res->rtmult = ntohl(*p++);
- res->wtmax = ntohl(*p++);
- res->wtpref = ntohl(*p++);
- res->wtmult = ntohl(*p++);
- res->dtpref = ntohl(*p++);
- p = xdr_decode_hyper(p, &res->maxfilesize);
- p = xdr_decode_time3(p, &res->time_delta);
-
- /* ignore properties */
- res->lease_time = 0;
- return 0;
-}
-
-/*
* 3.3.19 FSINFO3res
*
* struct FSINFO3resok {
@@ -2733,26 +2312,6 @@ out_status:
}
/*
- * Decode PATHCONF reply
- */
-static int
-nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res)
-{
- int status;
-
- status = ntohl(*p++);
-
- p = xdr_decode_post_op_attr(p, res->fattr);
- if (status != 0)
- return nfs_stat_to_errno(status);
- res->max_link = ntohl(*p++);
- res->max_namelen = ntohl(*p++);
-
- /* ignore remaining fields */
- return 0;
-}
-
-/*
* 3.3.20 PATHCONF3res
*
* struct PATHCONF3resok {
@@ -2817,24 +2376,6 @@ out_status:
}
/*
- * Decode COMMIT reply
- */
-static int
-nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res)
-{
- int status;
-
- status = ntohl(*p++);
- p = xdr_decode_wcc_data(p, res->fattr);
- if (status != 0)
- return nfs_stat_to_errno(status);
-
- res->verf->verifier[0] = *p++;
- res->verf->verifier[1] = *p++;
- return 0;
-}
-
-/*
* 3.3.21 COMMIT3res
*
* struct COMMIT3resok {
@@ -2877,37 +2418,6 @@ out_status:
}
#ifdef CONFIG_NFS_V3_ACL
-/*
- * Decode GETACL reply
- */
-static int
-nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p,
- struct nfs3_getaclres *res)
-{
- struct xdr_buf *buf = &req->rq_rcv_buf;
- int status = ntohl(*p++);
- struct posix_acl **acl;
- unsigned int *aclcnt;
- int err, base;
-
- if (status != 0)
- return nfs_stat_to_errno(status);
- p = xdr_decode_post_op_attr(p, res->fattr);
- res->mask = ntohl(*p++);
- if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT))
- return -EINVAL;
- base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base;
-
- acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL;
- aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL;
- err = nfsacl_decode(buf, base, aclcnt, acl);
-
- acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL;
- aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL;
- if (err > 0)
- err = nfsacl_decode(buf, base + err, aclcnt, acl);
- return (err > 0) ? 0 : err;
-}
static inline int decode_getacl3resok(struct xdr_stream *xdr,
struct nfs3_getaclres *result)
@@ -2973,20 +2483,6 @@ out_default:
return nfs_stat_to_errno(status);
}
-/*
- * Decode setacl reply.
- */
-static int
-nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
-{
- int status = ntohl(*p++);
-
- if (status)
- return nfs_stat_to_errno(status);
- xdr_decode_post_op_attr(p, fattr);
- return 0;
-}
-
static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req, __be32 *p,
struct nfs_fattr *result)
{
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 16/31] NFS: Move and update xdr_decode_foo() functions that we're keeping
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (14 preceding siblings ...)
2010-12-14 14:56 ` [PATCH 15/31] NFS: Remove unused old " Chuck Lever
@ 2010-12-14 14:57 ` Chuck Lever
2010-12-14 14:57 ` [PATCH 17/31] lockd: Introduce new-style XDR functions for NLMv4 Chuck Lever
` (15 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:57 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
Move the timestamp decoder to match the placement and naming
conventions of the other helpers. Fold xdr_decode_fattr() into
decode_fattr3(), which is now it's only user. Fold
xdr_decode_wcc_attr() into decode_wcc_attr(), which is now it's only
user.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs3xdr.c | 136 +++++++++++++++++++++++++++---------------------------
1 files changed, 67 insertions(+), 69 deletions(-)
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index 586587f..c97d00f 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -127,69 +127,6 @@ static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
/*
- * Common NFS XDR functions as inlines
- */
-
-/*
- * Encode/decode time.
- */
-static inline __be32 *
-xdr_decode_time3(__be32 *p, struct timespec *timep)
-{
- timep->tv_sec = ntohl(*p++);
- timep->tv_nsec = ntohl(*p++);
- return p;
-}
-
-static __be32 *
-xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr)
-{
- unsigned int type, major, minor;
- umode_t fmode;
-
- type = ntohl(*p++);
- if (type > NF3FIFO)
- type = NF3NON;
- fmode = nfs_type2fmt[type];
- fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode;
- fattr->nlink = ntohl(*p++);
- fattr->uid = ntohl(*p++);
- fattr->gid = ntohl(*p++);
- p = xdr_decode_hyper(p, &fattr->size);
- p = xdr_decode_hyper(p, &fattr->du.nfs3.used);
-
- /* Turn remote device info into Linux-specific dev_t */
- major = ntohl(*p++);
- minor = ntohl(*p++);
- fattr->rdev = MKDEV(major, minor);
- if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor)
- fattr->rdev = 0;
-
- p = xdr_decode_hyper(p, &fattr->fsid.major);
- fattr->fsid.minor = 0;
- p = xdr_decode_hyper(p, &fattr->fileid);
- p = xdr_decode_time3(p, &fattr->atime);
- p = xdr_decode_time3(p, &fattr->mtime);
- p = xdr_decode_time3(p, &fattr->ctime);
-
- /* Update the mode bits */
- fattr->valid |= NFS_ATTR_FATTR_V3;
- return p;
-}
-
-static inline __be32 *
-xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr)
-{
- p = xdr_decode_hyper(p, &fattr->pre_size);
- p = xdr_decode_time3(p, &fattr->pre_mtime);
- p = xdr_decode_time3(p, &fattr->pre_ctime);
- fattr->valid |= NFS_ATTR_FATTR_PRESIZE
- | NFS_ATTR_FATTR_PREMTIME
- | NFS_ATTR_FATTR_PRECTIME;
- return p;
-}
-
-/*
* Encode/decode NFSv3 basic data types
*
* Basic NFSv3 data types are defined in section 2.5 of RFC 1813:
@@ -239,6 +176,11 @@ out_overflow:
*
* typedef uint64 fileid3;
*/
+static __be32 *xdr_decode_fileid3(__be32 *p, u64 *fileid)
+{
+ return xdr_decode_hyper(p, fileid);
+}
+
static int decode_fileid3(struct xdr_stream *xdr, u64 *fileid)
{
return decode_uint64(xdr, fileid);
@@ -452,6 +394,17 @@ static void encode_ftype3(struct xdr_stream *xdr, const u32 type)
encode_uint32(xdr, type);
}
+static __be32 *xdr_decode_ftype3(__be32 *p, umode_t *mode)
+{
+ u32 type;
+
+ type = be32_to_cpup(p++);
+ if (type > NF3FIFO)
+ type = NF3NON;
+ *mode = nfs_type2fmt[type];
+ return p;
+}
+
/*
* specdata3
*
@@ -469,6 +422,18 @@ static void encode_specdata3(struct xdr_stream *xdr, const dev_t rdev)
*p = cpu_to_be32(MINOR(rdev));
}
+static __be32 *xdr_decode_specdata3(__be32 *p, dev_t *rdev)
+{
+ unsigned int major, minor;
+
+ major = be32_to_cpup(p++);
+ minor = be32_to_cpup(p++);
+ *rdev = MKDEV(major, minor);
+ if (MAJOR(*rdev) != major || MINOR(*rdev) != minor)
+ *rdev = 0;
+ return p;
+}
+
/*
* nfs_fh3
*
@@ -530,6 +495,13 @@ static __be32 *xdr_encode_nfstime3(__be32 *p, const struct timespec *timep)
return p;
}
+static __be32 *xdr_decode_nfstime3(__be32 *p, struct timespec *timep)
+{
+ timep->tv_sec = be32_to_cpup(p++);
+ timep->tv_nsec = be32_to_cpup(p++);
+ return p;
+}
+
/*
* sattr3
*
@@ -678,12 +650,33 @@ static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr)
*/
static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr)
{
+ umode_t fmode;
__be32 *p;
p = xdr_inline_decode(xdr, NFS3_fattr_sz << 2);
if (unlikely(p == NULL))
goto out_overflow;
- xdr_decode_fattr(p, fattr);
+
+ p = xdr_decode_ftype3(p, &fmode);
+
+ fattr->mode = (be32_to_cpup(p++) & ~S_IFMT) | fmode;
+ fattr->nlink = be32_to_cpup(p++);
+ fattr->uid = be32_to_cpup(p++);
+ fattr->gid = be32_to_cpup(p++);
+
+ p = xdr_decode_size3(p, &fattr->size);
+ p = xdr_decode_size3(p, &fattr->du.nfs3.used);
+ p = xdr_decode_specdata3(p, &fattr->rdev);
+
+ p = xdr_decode_hyper(p, &fattr->fsid.major);
+ fattr->fsid.minor = 0;
+
+ p = xdr_decode_fileid3(p, &fattr->fileid);
+ p = xdr_decode_nfstime3(p, &fattr->atime);
+ p = xdr_decode_nfstime3(p, &fattr->mtime);
+ xdr_decode_nfstime3(p, &fattr->ctime);
+
+ fattr->valid |= NFS_ATTR_FATTR_V3;
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
@@ -730,7 +723,15 @@ static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2);
if (unlikely(p == NULL))
goto out_overflow;
- xdr_decode_wcc_attr(p, fattr);
+
+ fattr->valid |= NFS_ATTR_FATTR_PRESIZE
+ | NFS_ATTR_FATTR_PREMTIME
+ | NFS_ATTR_FATTR_PRECTIME;
+
+ p = xdr_decode_size3(p, &fattr->pre_size);
+ p = xdr_decode_nfstime3(p, &fattr->pre_mtime);
+ xdr_decode_nfstime3(p, &fattr->pre_ctime);
+
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
@@ -1009,10 +1010,7 @@ static void encode_write3args(struct xdr_stream *xdr,
p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4);
p = xdr_encode_hyper(p, args->offset);
*p++ = cpu_to_be32(args->count);
-
- BUG_ON(args->stable > NFS_FILE_SYNC);
*p++ = cpu_to_be32(args->stable);
-
*p = cpu_to_be32(args->count);
xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
}
@@ -2278,7 +2276,7 @@ static int decode_fsinfo3resok(struct xdr_stream *xdr,
result->wtmult = be32_to_cpup(p++);
result->dtpref = be32_to_cpup(p++);
p = xdr_decode_size3(p, &result->maxfilesize);
- xdr_decode_time3(p, &result->time_delta);
+ xdr_decode_nfstime3(p, &result->time_delta);
/* ignore properties */
result->lease_time = 0;
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 17/31] lockd: Introduce new-style XDR functions for NLMv4
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (15 preceding siblings ...)
2010-12-14 14:57 ` [PATCH 16/31] NFS: Move and update xdr_decode_foo() functions that we're keeping Chuck Lever
@ 2010-12-14 14:57 ` Chuck Lever
2010-12-14 14:57 ` [PATCH 18/31] NFSD: Update XDR encoders in NFSv4 callback client Chuck Lever
` (14 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:57 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
We'd like to prevent local buffer overflows caused by malicious or
broken servers. New xdr_stream style decoders can do that.
For efficiency, we also want to be able to pass xdr_streams from
call_encode() to all XDR encoding functions, rather than building
an xdr_stream in every XDR encoding function in the kernel.
Same idea as the NLM v3 XDR overhaul.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/lockd/Makefile | 2
fs/lockd/clnt4xdr.c | 621 +++++++++++++++++++++++++++++++++++++++++++++++++++
fs/lockd/xdr4.c | 255 ---------------------
3 files changed, 622 insertions(+), 256 deletions(-)
create mode 100644 fs/lockd/clnt4xdr.c
diff --git a/fs/lockd/Makefile b/fs/lockd/Makefile
index e2e973f..d3c668b 100644
--- a/fs/lockd/Makefile
+++ b/fs/lockd/Makefile
@@ -9,5 +9,5 @@ obj-$(CONFIG_LOCKD) += lockd.o
lockd-objs-y := clntlock.o clntproc.o clntxdr.o host.o svc.o svclock.o \
svcshare.o svcproc.o svcsubs.o mon.o xdr.o grace.o
-lockd-objs-$(CONFIG_LOCKD_V4) += xdr4.o svc4proc.o
+lockd-objs-$(CONFIG_LOCKD_V4) += clnt4xdr.o xdr4.o svc4proc.o
lockd-objs := $(lockd-objs-y)
diff --git a/fs/lockd/clnt4xdr.c b/fs/lockd/clnt4xdr.c
new file mode 100644
index 0000000..1a1c3e2
--- /dev/null
+++ b/fs/lockd/clnt4xdr.c
@@ -0,0 +1,621 @@
+/*
+ * linux/fs/lockd/clnt4xdr.c
+ *
+ * XDR functions to encode/decode NLM version 4 RPC arguments and results.
+ *
+ * NLM client-side only.
+ *
+ * Copyright (C) 2010, Oracle. All rights reserved.
+ */
+
+#include <linux/types.h>
+#include <linux/sunrpc/xdr.h>
+#include <linux/sunrpc/clnt.h>
+#include <linux/sunrpc/stats.h>
+#include <linux/lockd/lockd.h>
+
+#define NLMDBG_FACILITY NLMDBG_XDR
+
+#if (NLMCLNT_OHSIZE > XDR_MAX_NETOBJ)
+# error "NLM host name cannot be larger than XDR_MAX_NETOBJ!"
+#endif
+
+#if (NLMCLNT_OHSIZE > NLM_MAXSTRLEN)
+# error "NLM host name cannot be larger than NLM's maximum string length!"
+#endif
+
+/*
+ * Declare the space requirements for NLM arguments and replies as
+ * number of 32bit-words
+ */
+#define NLM4_void_sz (0)
+#define NLM4_cookie_sz (1+(NLM_MAXCOOKIELEN>>2))
+#define NLM4_caller_sz (1+(NLMCLNT_OHSIZE>>2))
+#define NLM4_owner_sz (1+(NLMCLNT_OHSIZE>>2))
+#define NLM4_fhandle_sz (1+(NFS3_FHSIZE>>2))
+#define NLM4_lock_sz (5+NLM4_caller_sz+NLM4_owner_sz+NLM4_fhandle_sz)
+#define NLM4_holder_sz (6+NLM4_owner_sz)
+
+#define NLM4_testargs_sz (NLM4_cookie_sz+1+NLM4_lock_sz)
+#define NLM4_lockargs_sz (NLM4_cookie_sz+4+NLM4_lock_sz)
+#define NLM4_cancargs_sz (NLM4_cookie_sz+2+NLM4_lock_sz)
+#define NLM4_unlockargs_sz (NLM4_cookie_sz+NLM4_lock_sz)
+
+#define NLM4_testres_sz (NLM4_cookie_sz+1+NLM4_holder_sz)
+#define NLM4_res_sz (NLM4_cookie_sz+1)
+#define NLM4_norep_sz (0)
+
+
+static s64 loff_t_to_s64(loff_t offset)
+{
+ s64 res;
+
+ if (offset >= NLM4_OFFSET_MAX)
+ res = NLM4_OFFSET_MAX;
+ else if (offset <= -NLM4_OFFSET_MAX)
+ res = -NLM4_OFFSET_MAX;
+ else
+ res = offset;
+ return res;
+}
+
+static void nlm4_compute_offsets(const struct nlm_lock *lock,
+ u64 *l_offset, u64 *l_len)
+{
+ const struct file_lock *fl = &lock->fl;
+
+ BUG_ON(fl->fl_start > NLM4_OFFSET_MAX);
+ BUG_ON(fl->fl_end > NLM4_OFFSET_MAX &&
+ fl->fl_end != OFFSET_MAX);
+
+ *l_offset = loff_t_to_s64(fl->fl_start);
+ if (fl->fl_end == OFFSET_MAX)
+ *l_len = 0;
+ else
+ *l_len = loff_t_to_s64(fl->fl_end - fl->fl_start + 1);
+}
+
+/*
+ * Handle decode buffer overflows out-of-line.
+ */
+static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
+{
+ dprintk("lockd: %s prematurely hit the end of our receive buffer. "
+ "Remaining buffer length is %tu words.\n",
+ func, xdr->end - xdr->p);
+}
+
+
+/*
+ * Encode/decode NLMv4 basic data types
+ *
+ * Basic NLMv4 data types are defined in Appendix II, section 6.1.4
+ * of RFC 1813: "NFS Version 3 Protocol Specification" and in Chapter
+ * 10 of X/Open's "Protocols for Interworking: XNFS, Version 3W".
+ *
+ * Not all basic data types have their own encoding and decoding
+ * functions. For run-time efficiency, some data types are encoded
+ * or decoded inline.
+ */
+
+static void encode_bool(struct xdr_stream *xdr, const int value)
+{
+ __be32 *p;
+
+ p = xdr_reserve_space(xdr, 4);
+ *p = value ? xdr_one : xdr_zero;
+}
+
+static void encode_int32(struct xdr_stream *xdr, const s32 value)
+{
+ __be32 *p;
+
+ p = xdr_reserve_space(xdr, 4);
+ *p = cpu_to_be32(value);
+}
+
+/*
+ * typedef opaque netobj<MAXNETOBJ_SZ>
+ */
+static void encode_netobj(struct xdr_stream *xdr,
+ const u8 *data, const unsigned int length)
+{
+ __be32 *p;
+
+ BUG_ON(length > XDR_MAX_NETOBJ);
+ p = xdr_reserve_space(xdr, 4 + length);
+ xdr_encode_opaque(p, data, length);
+}
+
+static int decode_netobj(struct xdr_stream *xdr,
+ struct xdr_netobj *obj)
+{
+ u32 length;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ length = be32_to_cpup(p++);
+ if (unlikely(length > XDR_MAX_NETOBJ))
+ goto out_size;
+ obj->len = length;
+ obj->data = (u8 *)p;
+ return 0;
+out_size:
+ dprintk("NFS: returned netobj was too long: %u\n", length);
+ return -EIO;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * netobj cookie;
+ */
+static void encode_cookie(struct xdr_stream *xdr,
+ const struct nlm_cookie *cookie)
+{
+ BUG_ON(cookie->len > NLM_MAXCOOKIELEN);
+ encode_netobj(xdr, (u8 *)&cookie->data, cookie->len);
+}
+
+static int decode_cookie(struct xdr_stream *xdr,
+ struct nlm_cookie *cookie)
+{
+ u32 length;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ length = be32_to_cpup(p++);
+ /* apparently HPUX can return empty cookies */
+ if (length == 0)
+ goto out_hpux;
+ if (length > NLM_MAXCOOKIELEN)
+ goto out_size;
+ p = xdr_inline_decode(xdr, length);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ cookie->len = length;
+ memcpy(cookie->data, p, length);
+ return 0;
+out_hpux:
+ cookie->len = 4;
+ memset(cookie->data, 0, 4);
+ return 0;
+out_size:
+ dprintk("NFS: returned cookie was too long: %u\n", length);
+ return -EIO;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * netobj fh;
+ */
+static void encode_fh(struct xdr_stream *xdr, const struct nfs_fh *fh)
+{
+ BUG_ON(fh->size > NFS3_FHSIZE);
+ encode_netobj(xdr, (u8 *)&fh->data, fh->size);
+}
+
+/*
+ * enum nlm4_stats {
+ * NLM4_GRANTED = 0,
+ * NLM4_DENIED = 1,
+ * NLM4_DENIED_NOLOCKS = 2,
+ * NLM4_BLOCKED = 3,
+ * NLM4_DENIED_GRACE_PERIOD = 4,
+ * NLM4_DEADLCK = 5,
+ * NLM4_ROFS = 6,
+ * NLM4_STALE_FH = 7,
+ * NLM4_FBIG = 8,
+ * NLM4_FAILED = 9
+ * };
+ *
+ * struct nlm4_stat {
+ * nlm4_stats stat;
+ * };
+ *
+ * NB: we don't swap bytes for the NLM status values. The upper
+ * layers deal directly with the status value in network byte
+ * order.
+ */
+static void encode_nlm4_stat(struct xdr_stream *xdr,
+ const __be32 stat)
+{
+ __be32 *p;
+
+ BUG_ON(be32_to_cpu(stat) > NLM_FAILED);
+ p = xdr_reserve_space(xdr, 4);
+ *p = stat;
+}
+
+static int decode_nlm4_stat(struct xdr_stream *xdr, __be32 *stat)
+{
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ if (unlikely(*p > nlm4_failed))
+ goto out_bad_xdr;
+ *stat = *p;
+ return 0;
+out_bad_xdr:
+ dprintk("%s: server returned invalid nlm4_stats value: %u\n",
+ __func__, be32_to_cpup(p));
+ return -EIO;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * struct nlm4_holder {
+ * bool exclusive;
+ * int32 svid;
+ * netobj oh;
+ * uint64 l_offset;
+ * uint64 l_len;
+ * };
+ */
+static void encode_nlm4_holder(struct xdr_stream *xdr,
+ const struct nlm_res *result)
+{
+ const struct nlm_lock *lock = &result->lock;
+ u64 l_offset, l_len;
+ __be32 *p;
+
+ encode_bool(xdr, lock->fl.fl_type == F_RDLCK);
+ encode_int32(xdr, lock->svid);
+ encode_netobj(xdr, lock->oh.data, lock->oh.len);
+
+ p = xdr_reserve_space(xdr, 4 + 4);
+ nlm4_compute_offsets(lock, &l_offset, &l_len);
+ p = xdr_encode_hyper(p, l_offset);
+ xdr_encode_hyper(p, l_len);
+}
+
+static int decode_nlm4_holder(struct xdr_stream *xdr, struct nlm_res *result)
+{
+ struct nlm_lock *lock = &result->lock;
+ struct file_lock *fl = &lock->fl;
+ u64 l_offset, l_len;
+ u32 exclusive;
+ int error;
+ __be32 *p;
+ s32 end;
+
+ memset(lock, 0, sizeof(*lock));
+ locks_init_lock(fl);
+
+ p = xdr_inline_decode(xdr, 4 + 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ exclusive = be32_to_cpup(p++);
+ lock->svid = be32_to_cpup(p);
+ fl->fl_pid = (pid_t)lock->svid;
+
+ error = decode_netobj(xdr, &lock->oh);
+ if (unlikely(error))
+ goto out;
+
+ p = xdr_inline_decode(xdr, 8 + 8);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+
+ fl->fl_flags = FL_POSIX;
+ fl->fl_type = exclusive != 0 ? F_WRLCK : F_RDLCK;
+ p = xdr_decode_hyper(p, &l_offset);
+ xdr_decode_hyper(p, &l_len);
+ end = l_offset + l_len - 1;
+
+ fl->fl_start = (loff_t)l_offset;
+ if (l_len == 0 || end < 0)
+ fl->fl_end = OFFSET_MAX;
+ else
+ fl->fl_end = (loff_t)end;
+ error = 0;
+out:
+ return error;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
+ * string caller_name<LM_MAXSTRLEN>;
+ */
+static void encode_caller_name(struct xdr_stream *xdr, const char *name)
+{
+ /* NB: client-side does not set lock->len */
+ u32 length = strlen(name);
+ __be32 *p;
+
+ BUG_ON(length > NLM_MAXSTRLEN);
+ p = xdr_reserve_space(xdr, 4 + length);
+ xdr_encode_opaque(p, name, length);
+}
+
+/*
+ * struct nlm4_lock {
+ * string caller_name<LM_MAXSTRLEN>;
+ * netobj fh;
+ * netobj oh;
+ * int32 svid;
+ * uint64 l_offset;
+ * uint64 l_len;
+ * };
+ */
+static void encode_nlm4_lock(struct xdr_stream *xdr,
+ const struct nlm_lock *lock)
+{
+ u64 l_offset, l_len;
+ __be32 *p;
+
+ encode_caller_name(xdr, lock->caller);
+ encode_fh(xdr, &lock->fh);
+ encode_netobj(xdr, lock->oh.data, lock->oh.len);
+
+ p = xdr_reserve_space(xdr, 4 + 8 + 8);
+ *p++ = cpu_to_be32(lock->svid);
+
+ nlm4_compute_offsets(lock, &l_offset, &l_len);
+ p = xdr_encode_hyper(p, l_offset);
+ xdr_encode_hyper(p, l_len);
+}
+
+
+/*
+ * NLMv4 XDR encode functions
+ *
+ * NLMv4 argument types are defined in Appendix II of RFC 1813:
+ * "NFS Version 3 Protocol Specification" and Chapter 10 of X/Open's
+ * "Protocols for Interworking: XNFS, Version 3W".
+ */
+
+/*
+ * struct nlm4_testargs {
+ * netobj cookie;
+ * bool exclusive;
+ * struct nlm4_lock alock;
+ * };
+ */
+static int nlm4_xdr_enc_testargs(struct rpc_rqst *req, __be32 *p,
+ const struct nlm_args *args)
+{
+ const struct nlm_lock *lock = &args->lock;
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_cookie(&xdr, &args->cookie);
+ encode_bool(&xdr, lock->fl.fl_type == F_WRLCK);
+ encode_nlm4_lock(&xdr, lock);
+ return 0;
+}
+
+/*
+ * struct nlm4_lockargs {
+ * netobj cookie;
+ * bool block;
+ * bool exclusive;
+ * struct nlm4_lock alock;
+ * bool reclaim;
+ * int state;
+ * };
+ */
+static int nlm4_xdr_enc_lockargs(struct rpc_rqst *req, __be32 *p,
+ const struct nlm_args *args)
+{
+ const struct nlm_lock *lock = &args->lock;
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_cookie(&xdr, &args->cookie);
+ encode_bool(&xdr, args->block);
+ encode_bool(&xdr, lock->fl.fl_type == F_WRLCK);
+ encode_nlm4_lock(&xdr, lock);
+ encode_bool(&xdr, args->reclaim);
+ encode_int32(&xdr, args->state);
+ return 0;
+}
+
+/*
+ * struct nlm4_cancargs {
+ * netobj cookie;
+ * bool block;
+ * bool exclusive;
+ * struct nlm4_lock alock;
+ * };
+ */
+static int nlm4_xdr_enc_cancargs(struct rpc_rqst *req, __be32 *p,
+ const struct nlm_args *args)
+{
+ const struct nlm_lock *lock = &args->lock;
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_cookie(&xdr, &args->cookie);
+ encode_bool(&xdr, args->block);
+ encode_bool(&xdr, lock->fl.fl_type == F_WRLCK);
+ encode_nlm4_lock(&xdr, lock);
+ return 0;
+}
+
+/*
+ * struct nlm4_unlockargs {
+ * netobj cookie;
+ * struct nlm4_lock alock;
+ * };
+ */
+static int nlm4_xdr_enc_unlockargs(struct rpc_rqst *req, __be32 *p,
+ const struct nlm_args *args)
+{
+ const struct nlm_lock *lock = &args->lock;
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_cookie(&xdr, &args->cookie);
+ encode_nlm4_lock(&xdr, lock);
+ return 0;
+}
+
+/*
+ * struct nlm4_res {
+ * netobj cookie;
+ * nlm4_stat stat;
+ * };
+ */
+static int nlm4_xdr_enc_res(struct rpc_rqst *req, __be32 *p,
+ const struct nlm_res *result)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_cookie(&xdr, &result->cookie);
+ encode_nlm4_stat(&xdr, result->status);
+ return 0;
+}
+
+/*
+ * union nlm4_testrply switch (nlm4_stats stat) {
+ * case NLM4_DENIED:
+ * struct nlm4_holder holder;
+ * default:
+ * void;
+ * };
+ *
+ * struct nlm4_testres {
+ * netobj cookie;
+ * nlm4_testrply test_stat;
+ * };
+ */
+static int nlm4_xdr_enc_testres(struct rpc_rqst *req, __be32 *p,
+ const struct nlm_res *result)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &req->rq_snd_buf, p);
+ encode_cookie(&xdr, &result->cookie);
+ encode_nlm4_stat(&xdr, result->status);
+ if (result->status == nlm_lck_denied)
+ encode_nlm4_holder(&xdr, result);
+ return 0;
+}
+
+
+/*
+ * NLMv4 XDR decode functions
+ *
+ * NLMv4 argument types are defined in Appendix II of RFC 1813:
+ * "NFS Version 3 Protocol Specification" and Chapter 10 of X/Open's
+ * "Protocols for Interworking: XNFS, Version 3W".
+ */
+
+/*
+ * union nlm4_testrply switch (nlm4_stats stat) {
+ * case NLM4_DENIED:
+ * struct nlm4_holder holder;
+ * default:
+ * void;
+ * };
+ *
+ * struct nlm4_testres {
+ * netobj cookie;
+ * nlm4_testrply test_stat;
+ * };
+ */
+static int decode_nlm4_testrply(struct xdr_stream *xdr,
+ struct nlm_res *result)
+{
+ int error;
+
+ error = decode_nlm4_stat(xdr, &result->status);
+ if (unlikely(error))
+ goto out;
+ if (result->status == nlm_lck_denied)
+ error = decode_nlm4_holder(xdr, result);
+out:
+ return error;
+}
+
+static int nlm4_xdr_dec_testres(struct rpc_rqst *req, __be32 *p,
+ struct nlm_res *result)
+{
+ struct xdr_stream xdr;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_cookie(&xdr, &result->cookie);
+ if (unlikely(error))
+ goto out;
+ error = decode_nlm4_testrply(&xdr, result);
+out:
+ return error;
+}
+
+/*
+ * struct nlm4_res {
+ * netobj cookie;
+ * nlm4_stat stat;
+ * };
+ */
+static int nlm4_xdr_dec_res(struct rpc_rqst *req, __be32 *p,
+ struct nlm_res *result)
+{
+ struct xdr_stream xdr;
+ int error;
+
+ xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ error = decode_cookie(&xdr, &result->cookie);
+ if (unlikely(error))
+ goto out;
+ error = decode_nlm4_stat(&xdr, &result->status);
+out:
+ return error;
+}
+
+
+/*
+ * For NLM, a void procedure really returns nothing
+ */
+#define nlm4_xdr_dec_norep NULL
+
+#define PROC(proc, argtype, restype) \
+[NLMPROC_##proc] = { \
+ .p_proc = NLMPROC_##proc, \
+ .p_encode = (kxdrproc_t)nlm4_xdr_enc_##argtype, \
+ .p_decode = (kxdrproc_t)nlm4_xdr_dec_##restype, \
+ .p_arglen = NLM4_##argtype##_sz, \
+ .p_replen = NLM4_##restype##_sz, \
+ .p_statidx = NLMPROC_##proc, \
+ .p_name = #proc, \
+ }
+
+static struct rpc_procinfo nlm4_procedures[] = {
+ PROC(TEST, testargs, testres),
+ PROC(LOCK, lockargs, res),
+ PROC(CANCEL, cancargs, res),
+ PROC(UNLOCK, unlockargs, res),
+ PROC(GRANTED, testargs, res),
+ PROC(TEST_MSG, testargs, norep),
+ PROC(LOCK_MSG, lockargs, norep),
+ PROC(CANCEL_MSG, cancargs, norep),
+ PROC(UNLOCK_MSG, unlockargs, norep),
+ PROC(GRANTED_MSG, testargs, norep),
+ PROC(TEST_RES, testres, norep),
+ PROC(LOCK_RES, res, norep),
+ PROC(CANCEL_RES, res, norep),
+ PROC(UNLOCK_RES, res, norep),
+ PROC(GRANTED_RES, res, norep),
+};
+
+struct rpc_version nlm_version4 = {
+ .number = 4,
+ .nrprocs = ARRAY_SIZE(nlm4_procedures),
+ .procs = nlm4_procedures,
+};
diff --git a/fs/lockd/xdr4.c b/fs/lockd/xdr4.c
index ad9dbbc..dfa4789 100644
--- a/fs/lockd/xdr4.c
+++ b/fs/lockd/xdr4.c
@@ -93,15 +93,6 @@ nlm4_decode_fh(__be32 *p, struct nfs_fh *f)
return p + XDR_QUADLEN(f->size);
}
-static __be32 *
-nlm4_encode_fh(__be32 *p, struct nfs_fh *f)
-{
- *p++ = htonl(f->size);
- if (f->size) p[XDR_QUADLEN(f->size)-1] = 0; /* don't leak anything */
- memcpy(p, f->data, f->size);
- return p + XDR_QUADLEN(f->size);
-}
-
/*
* Encode and decode owner handle
*/
@@ -112,12 +103,6 @@ nlm4_decode_oh(__be32 *p, struct xdr_netobj *oh)
}
static __be32 *
-nlm4_encode_oh(__be32 *p, struct xdr_netobj *oh)
-{
- return xdr_encode_netobj(p, oh);
-}
-
-static __be32 *
nlm4_decode_lock(__be32 *p, struct nlm_lock *lock)
{
struct file_lock *fl = &lock->fl;
@@ -150,38 +135,6 @@ nlm4_decode_lock(__be32 *p, struct nlm_lock *lock)
}
/*
- * Encode a lock as part of an NLM call
- */
-static __be32 *
-nlm4_encode_lock(__be32 *p, struct nlm_lock *lock)
-{
- struct file_lock *fl = &lock->fl;
- __s64 start, len;
-
- if (!(p = xdr_encode_string(p, lock->caller))
- || !(p = nlm4_encode_fh(p, &lock->fh))
- || !(p = nlm4_encode_oh(p, &lock->oh)))
- return NULL;
-
- if (fl->fl_start > NLM4_OFFSET_MAX
- || (fl->fl_end > NLM4_OFFSET_MAX && fl->fl_end != OFFSET_MAX))
- return NULL;
-
- *p++ = htonl(lock->svid);
-
- start = loff_t_to_s64(fl->fl_start);
- if (fl->fl_end == OFFSET_MAX)
- len = 0;
- else
- len = loff_t_to_s64(fl->fl_end - fl->fl_start + 1);
-
- p = xdr_encode_hyper(p, start);
- p = xdr_encode_hyper(p, len);
-
- return p;
-}
-
-/*
* Encode result of a TEST/TEST_MSG call
*/
static __be32 *
@@ -379,211 +332,3 @@ nlm4svc_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy)
{
return xdr_ressize_check(rqstp, p);
}
-
-/*
- * Now, the client side XDR functions
- */
-#ifdef NLMCLNT_SUPPORT_SHARES
-static int
-nlm4clt_decode_void(struct rpc_rqst *req, __be32 *p, void *ptr)
-{
- return 0;
-}
-#endif
-
-static int
-nlm4clt_encode_testargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp)
-{
- struct nlm_lock *lock = &argp->lock;
-
- if (!(p = nlm4_encode_cookie(p, &argp->cookie)))
- return -EIO;
- *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero;
- if (!(p = nlm4_encode_lock(p, lock)))
- return -EIO;
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-static int
-nlm4clt_decode_testres(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp)
-{
- if (!(p = nlm4_decode_cookie(p, &resp->cookie)))
- return -EIO;
- resp->status = *p++;
- if (resp->status == nlm_lck_denied) {
- struct file_lock *fl = &resp->lock.fl;
- u32 excl;
- __u64 start, len;
- __s64 end;
-
- memset(&resp->lock, 0, sizeof(resp->lock));
- locks_init_lock(fl);
- excl = ntohl(*p++);
- resp->lock.svid = ntohl(*p++);
- fl->fl_pid = (pid_t)resp->lock.svid;
- if (!(p = nlm4_decode_oh(p, &resp->lock.oh)))
- return -EIO;
-
- fl->fl_flags = FL_POSIX;
- fl->fl_type = excl? F_WRLCK : F_RDLCK;
- p = xdr_decode_hyper(p, &start);
- p = xdr_decode_hyper(p, &len);
- end = start + len - 1;
-
- fl->fl_start = s64_to_loff_t(start);
- if (len == 0 || end < 0)
- fl->fl_end = OFFSET_MAX;
- else
- fl->fl_end = s64_to_loff_t(end);
- }
- return 0;
-}
-
-
-static int
-nlm4clt_encode_lockargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp)
-{
- struct nlm_lock *lock = &argp->lock;
-
- if (!(p = nlm4_encode_cookie(p, &argp->cookie)))
- return -EIO;
- *p++ = argp->block? xdr_one : xdr_zero;
- *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero;
- if (!(p = nlm4_encode_lock(p, lock)))
- return -EIO;
- *p++ = argp->reclaim? xdr_one : xdr_zero;
- *p++ = htonl(argp->state);
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-static int
-nlm4clt_encode_cancargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp)
-{
- struct nlm_lock *lock = &argp->lock;
-
- if (!(p = nlm4_encode_cookie(p, &argp->cookie)))
- return -EIO;
- *p++ = argp->block? xdr_one : xdr_zero;
- *p++ = (lock->fl.fl_type == F_WRLCK)? xdr_one : xdr_zero;
- if (!(p = nlm4_encode_lock(p, lock)))
- return -EIO;
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-static int
-nlm4clt_encode_unlockargs(struct rpc_rqst *req, __be32 *p, nlm_args *argp)
-{
- struct nlm_lock *lock = &argp->lock;
-
- if (!(p = nlm4_encode_cookie(p, &argp->cookie)))
- return -EIO;
- if (!(p = nlm4_encode_lock(p, lock)))
- return -EIO;
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-static int
-nlm4clt_encode_res(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp)
-{
- if (!(p = nlm4_encode_cookie(p, &resp->cookie)))
- return -EIO;
- *p++ = resp->status;
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-static int
-nlm4clt_encode_testres(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp)
-{
- if (!(p = nlm4_encode_testres(p, resp)))
- return -EIO;
- req->rq_slen = xdr_adjust_iovec(req->rq_svec, p);
- return 0;
-}
-
-static int
-nlm4clt_decode_res(struct rpc_rqst *req, __be32 *p, struct nlm_res *resp)
-{
- if (!(p = nlm4_decode_cookie(p, &resp->cookie)))
- return -EIO;
- resp->status = *p++;
- return 0;
-}
-
-#if (NLMCLNT_OHSIZE > XDR_MAX_NETOBJ)
-# error "NLM host name cannot be larger than XDR_MAX_NETOBJ!"
-#endif
-
-#if (NLMCLNT_OHSIZE > NLM_MAXSTRLEN)
-# error "NLM host name cannot be larger than NLM's maximum string length!"
-#endif
-
-/*
- * Buffer requirements for NLM
- */
-#define NLM4_void_sz 0
-#define NLM4_cookie_sz 1+XDR_QUADLEN(NLM_MAXCOOKIELEN)
-#define NLM4_caller_sz 1+XDR_QUADLEN(NLMCLNT_OHSIZE)
-#define NLM4_owner_sz 1+XDR_QUADLEN(NLMCLNT_OHSIZE)
-#define NLM4_fhandle_sz 1+XDR_QUADLEN(NFS3_FHSIZE)
-#define NLM4_lock_sz 5+NLM4_caller_sz+NLM4_owner_sz+NLM4_fhandle_sz
-#define NLM4_holder_sz 6+NLM4_owner_sz
-
-#define NLM4_testargs_sz NLM4_cookie_sz+1+NLM4_lock_sz
-#define NLM4_lockargs_sz NLM4_cookie_sz+4+NLM4_lock_sz
-#define NLM4_cancargs_sz NLM4_cookie_sz+2+NLM4_lock_sz
-#define NLM4_unlockargs_sz NLM4_cookie_sz+NLM4_lock_sz
-
-#define NLM4_testres_sz NLM4_cookie_sz+1+NLM4_holder_sz
-#define NLM4_res_sz NLM4_cookie_sz+1
-#define NLM4_norep_sz 0
-
-/*
- * For NLM, a void procedure really returns nothing
- */
-#define nlm4clt_decode_norep NULL
-
-#define PROC(proc, argtype, restype) \
-[NLMPROC_##proc] = { \
- .p_proc = NLMPROC_##proc, \
- .p_encode = (kxdrproc_t) nlm4clt_encode_##argtype, \
- .p_decode = (kxdrproc_t) nlm4clt_decode_##restype, \
- .p_arglen = NLM4_##argtype##_sz, \
- .p_replen = NLM4_##restype##_sz, \
- .p_statidx = NLMPROC_##proc, \
- .p_name = #proc, \
- }
-
-static struct rpc_procinfo nlm4_procedures[] = {
- PROC(TEST, testargs, testres),
- PROC(LOCK, lockargs, res),
- PROC(CANCEL, cancargs, res),
- PROC(UNLOCK, unlockargs, res),
- PROC(GRANTED, testargs, res),
- PROC(TEST_MSG, testargs, norep),
- PROC(LOCK_MSG, lockargs, norep),
- PROC(CANCEL_MSG, cancargs, norep),
- PROC(UNLOCK_MSG, unlockargs, norep),
- PROC(GRANTED_MSG, testargs, norep),
- PROC(TEST_RES, testres, norep),
- PROC(LOCK_RES, res, norep),
- PROC(CANCEL_RES, res, norep),
- PROC(UNLOCK_RES, res, norep),
- PROC(GRANTED_RES, res, norep),
-#ifdef NLMCLNT_SUPPORT_SHARES
- PROC(SHARE, shareargs, shareres),
- PROC(UNSHARE, shareargs, shareres),
- PROC(NM_LOCK, lockargs, res),
- PROC(FREE_ALL, notify, void),
-#endif
-};
-
-struct rpc_version nlm_version4 = {
- .number = 4,
- .nrprocs = 24,
- .procs = nlm4_procedures,
-};
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 18/31] NFSD: Update XDR encoders in NFSv4 callback client
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (16 preceding siblings ...)
2010-12-14 14:57 ` [PATCH 17/31] lockd: Introduce new-style XDR functions for NLMv4 Chuck Lever
@ 2010-12-14 14:57 ` Chuck Lever
2010-12-14 14:57 ` [PATCH 19/31] NFSD: Update XDR decoders " Chuck Lever
` (13 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:57 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
Remove old-style NFSv4 XDR macros in favor of the style now used in
fs/nfs/nfs4xdr.c. These were forgotten during the recent nfs4xdr.c
rewrite.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfsd/nfs4callback.c | 255 ++++++++++++++++++++++++++++++++++--------------
1 files changed, 178 insertions(+), 77 deletions(-)
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 143da2e..d8148cc 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -50,11 +50,6 @@ enum {
NFSPROC4_CLNT_CB_SEQUENCE,
};
-enum nfs_cb_opnum4 {
- OP_CB_RECALL = 4,
- OP_CB_SEQUENCE = 11,
-};
-
#define NFS4_MAXTAGLEN 20
#define NFS4_enc_cb_null_sz 0
@@ -80,30 +75,6 @@ enum nfs_cb_opnum4 {
op_dec_sz)
/*
-* Generic encode routines from fs/nfs/nfs4xdr.c
-*/
-static inline __be32 *
-xdr_writemem(__be32 *p, const void *ptr, int nbytes)
-{
- int tmp = XDR_QUADLEN(nbytes);
- if (!tmp)
- return p;
- p[tmp-1] = 0;
- memcpy(p, ptr, nbytes);
- return p + tmp;
-}
-
-#define WRITE32(n) *p++ = htonl(n)
-#define WRITEMEM(ptr,nbytes) do { \
- p = xdr_writemem(p, ptr, nbytes); \
-} while (0)
-#define RESERVE_SPACE(nbytes) do { \
- p = xdr_reserve_space(xdr, nbytes); \
- if (!p) dprintk("NFSD: RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __func__); \
- BUG_ON(!p); \
-} while (0)
-
-/*
* Generic decode routines from fs/nfs/nfs4xdr.c
*/
#define DECODE_TAIL \
@@ -197,102 +168,232 @@ nfs_cb_stat_to_errno(int stat)
return stat;
}
+static __be32 *xdr_encode_empty_array(__be32 *p)
+{
+ *p++ = xdr_zero;
+ return p;
+}
+
+/*
+ * Encode/decode NFSv4 CB basic data types
+ *
+ * Basic NFSv4 callback data types are defined in section 15 of RFC
+ * 3530: "Network File System (NFS) version 4 Protocol" and section
+ * 20 of RFC 5661: "Network File System (NFS) Version 4 Minor Version
+ * 1 Protocol"
+ */
+
+/*
+ * nfs_cb_opnum4
+ *
+ * enum nfs_cb_opnum4 {
+ * OP_CB_GETATTR = 3,
+ * ...
+ * };
+ */
+enum nfs_cb_opnum4 {
+ OP_CB_GETATTR = 3,
+ OP_CB_RECALL = 4,
+ OP_CB_LAYOUTRECALL = 5,
+ OP_CB_NOTIFY = 6,
+ OP_CB_PUSH_DELEG = 7,
+ OP_CB_RECALL_ANY = 8,
+ OP_CB_RECALLABLE_OBJ_AVAIL = 9,
+ OP_CB_RECALL_SLOT = 10,
+ OP_CB_SEQUENCE = 11,
+ OP_CB_WANTS_CANCELLED = 12,
+ OP_CB_NOTIFY_LOCK = 13,
+ OP_CB_NOTIFY_DEVICEID = 14,
+ OP_CB_ILLEGAL = 10044
+};
+
+static void encode_nfs_cb_opnum4(struct xdr_stream *xdr, enum nfs_cb_opnum4 op)
+{
+ __be32 *p;
+
+ p = xdr_reserve_space(xdr, 4);
+ *p = cpu_to_be32(op);
+}
+
+/*
+ * nfs_fh4
+ *
+ * typedef opaque nfs_fh4<NFS4_FHSIZE>;
+ */
+static void encode_nfs_fh4(struct xdr_stream *xdr, const struct knfsd_fh *fh)
+{
+ u32 length = fh->fh_size;
+ __be32 *p;
+
+ BUG_ON(length > NFS4_FHSIZE);
+ p = xdr_reserve_space(xdr, 4 + length);
+ xdr_encode_opaque(p, &fh->fh_base, length);
+}
+
/*
- * XDR encode
+ * stateid4
+ *
+ * struct stateid4 {
+ * uint32_t seqid;
+ * opaque other[12];
+ * };
*/
+static void encode_stateid4(struct xdr_stream *xdr, const stateid_t *sid)
+{
+ __be32 *p;
+
+ p = xdr_reserve_space(xdr, NFS4_STATEID_SIZE);
+ *p++ = cpu_to_be32(sid->si_generation);
+ xdr_encode_opaque_fixed(p, &sid->si_opaque, NFS4_STATEID_OTHER_SIZE);
+}
-static void
-encode_stateid(struct xdr_stream *xdr, stateid_t *sid)
+/*
+ * sessionid4
+ *
+ * typedef opaque sessionid4[NFS4_SESSIONID_SIZE];
+ */
+static void encode_sessionid4(struct xdr_stream *xdr,
+ const struct nfsd4_session *session)
{
__be32 *p;
- RESERVE_SPACE(sizeof(stateid_t));
- WRITE32(sid->si_generation);
- WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t));
+ p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN);
+ xdr_encode_opaque_fixed(p, session->se_sessionid.data,
+ NFS4_MAX_SESSIONID_LEN);
}
-static void
-encode_cb_compound_hdr(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr)
+/*
+ * CB_COMPOUND4args
+ *
+ * struct CB_COMPOUND4args {
+ * utf8str_cs tag;
+ * uint32_t minorversion;
+ * uint32_t callback_ident;
+ * nfs_cb_argop4 argarray<>;
+ * };
+*/
+static void encode_cb_compound4args(struct xdr_stream *xdr,
+ struct nfs4_cb_compound_hdr *hdr)
{
__be32 * p;
- RESERVE_SPACE(16);
- WRITE32(0); /* tag length is always 0 */
- WRITE32(hdr->minorversion);
- WRITE32(hdr->ident);
+ p = xdr_reserve_space(xdr, 4 + 4 + 4 + 4);
+ p = xdr_encode_empty_array(p); /* empty tag */
+ *p++ = cpu_to_be32(hdr->minorversion);
+ *p++ = cpu_to_be32(hdr->ident);
+
hdr->nops_p = p;
- WRITE32(hdr->nops);
+ *p = cpu_to_be32(hdr->nops); /* argarray element count */
}
+/*
+ * Update argarray element count
+ */
static void encode_cb_nops(struct nfs4_cb_compound_hdr *hdr)
{
- *hdr->nops_p = htonl(hdr->nops);
+ BUG_ON(hdr->nops > NFS4_MAX_BACK_CHANNEL_OPS);
+ *hdr->nops_p = cpu_to_be32(hdr->nops);
}
-static void
-encode_cb_recall(struct xdr_stream *xdr, struct nfs4_delegation *dp,
- struct nfs4_cb_compound_hdr *hdr)
+/*
+ * CB_RECALL4args
+ *
+ * struct CB_RECALL4args {
+ * stateid4 stateid;
+ * bool truncate;
+ * nfs_fh4 fh;
+ * };
+ */
+static void encode_cb_recall4args(struct xdr_stream *xdr,
+ const struct nfs4_delegation *dp,
+ struct nfs4_cb_compound_hdr *hdr)
{
__be32 *p;
- int len = dp->dl_fh.fh_size;
-
- RESERVE_SPACE(4);
- WRITE32(OP_CB_RECALL);
- encode_stateid(xdr, &dp->dl_stateid);
- RESERVE_SPACE(8 + (XDR_QUADLEN(len) << 2));
- WRITE32(0); /* truncate optimization not implemented */
- WRITE32(len);
- WRITEMEM(&dp->dl_fh.fh_base, len);
+
+ encode_nfs_cb_opnum4(xdr, OP_CB_RECALL);
+ encode_stateid4(xdr, &dp->dl_stateid);
+
+ p = xdr_reserve_space(xdr, 4);
+ *p++ = xdr_zero; /* truncate */
+
+ encode_nfs_fh4(xdr, &dp->dl_fh);
+
hdr->nops++;
}
-static void
-encode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_callback *cb,
- struct nfs4_cb_compound_hdr *hdr)
+/*
+ * CB_SEQUENCE4args
+ *
+ * struct CB_SEQUENCE4args {
+ * sessionid4 csa_sessionid;
+ * sequenceid4 csa_sequenceid;
+ * slotid4 csa_slotid;
+ * slotid4 csa_highest_slotid;
+ * bool csa_cachethis;
+ * referring_call_list4 csa_referring_call_lists<>;
+ * };
+ */
+static void encode_cb_sequence4args(struct xdr_stream *xdr,
+ const struct nfsd4_callback *cb,
+ struct nfs4_cb_compound_hdr *hdr)
{
+ struct nfsd4_session *session = cb->cb_clp->cl_cb_session;
__be32 *p;
- struct nfsd4_session *ses = cb->cb_clp->cl_cb_session;
if (hdr->minorversion == 0)
return;
- RESERVE_SPACE(1 + NFS4_MAX_SESSIONID_LEN + 20);
+ encode_nfs_cb_opnum4(xdr, OP_CB_SEQUENCE);
+ encode_sessionid4(xdr, session);
+
+ p = xdr_reserve_space(xdr, 4 + 4 + 4 + 4 + 4);
+ *p++ = cpu_to_be32(session->se_cb_seq_nr); /* csa_sequenceid */
+ *p++ = xdr_zero; /* csa_slotid */
+ *p++ = xdr_zero; /* csa_highest_slotid */
+ *p++ = xdr_zero; /* csa_cachethis */
+ xdr_encode_empty_array(p); /* csa_referring_call_lists */
- WRITE32(OP_CB_SEQUENCE);
- WRITEMEM(ses->se_sessionid.data, NFS4_MAX_SESSIONID_LEN);
- WRITE32(ses->se_cb_seq_nr);
- WRITE32(0); /* slotid, always 0 */
- WRITE32(0); /* highest slotid always 0 */
- WRITE32(0); /* cachethis always 0 */
- WRITE32(0); /* FIXME: support referring_call_lists */
hdr->nops++;
}
-static int
-nfs4_xdr_enc_cb_null(struct rpc_rqst *req, __be32 *p)
+/*
+ * NFSv4.0 and NFSv4.1 XDR encode functions
+ *
+ * NFSv4.0 callback argument types are defined in section 15 of RFC
+ * 3530: "Network File System (NFS) version 4 Protocol" and section 20
+ * of RFC 5661: "Network File System (NFS) Version 4 Minor Version 1
+ * Protocol".
+ */
+
+/*
+ * NB: Without this zero space reservation, callbacks over krb5p fail
+ */
+static int nfs4_xdr_enc_cb_null(struct rpc_rqst *req, __be32 *p, void *__unused)
{
struct xdr_stream xdrs, *xdr = &xdrs;
xdr_init_encode(&xdrs, &req->rq_snd_buf, p);
- RESERVE_SPACE(0);
+ xdr_reserve_space(xdr, 0);
return 0;
}
-static int
-nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p,
- struct nfsd4_callback *cb)
+/*
+ * 20.2. Operation 4: CB_RECALL - Recall a Delegation
+ */
+static int nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p,
+ const struct nfsd4_callback *cb)
{
struct xdr_stream xdr;
- struct nfs4_delegation *args = cb->cb_op;
+ const struct nfs4_delegation *args = cb->cb_op;
struct nfs4_cb_compound_hdr hdr = {
.ident = cb->cb_clp->cl_cb_ident,
.minorversion = cb->cb_minorversion,
};
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cb_compound_hdr(&xdr, &hdr);
- encode_cb_sequence(&xdr, cb, &hdr);
- encode_cb_recall(&xdr, args, &hdr);
+ encode_cb_compound4args(&xdr, &hdr);
+ encode_cb_sequence4args(&xdr, cb, &hdr);
+ encode_cb_recall4args(&xdr, args, &hdr);
encode_cb_nops(&hdr);
return 0;
}
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 19/31] NFSD: Update XDR decoders in NFSv4 callback client
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (17 preceding siblings ...)
2010-12-14 14:57 ` [PATCH 18/31] NFSD: Update XDR encoders in NFSv4 callback client Chuck Lever
@ 2010-12-14 14:57 ` Chuck Lever
2010-12-14 14:57 ` [PATCH 20/31] NFS: Repair whitespace damage in NFS PROC macro Chuck Lever
` (12 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:57 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
Remove old-style NFSv4 XDR macros in favor of the style now used in
fs/nfs/nfs4xdr.c. These were forgotten during the recent nfs4xdr.c
rewrite.
Additional whitespace cleanup adds to the size of this patch.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfsd/nfs4callback.c | 415 ++++++++++++++++++++++++++++--------------------
1 files changed, 239 insertions(+), 176 deletions(-)
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index d8148cc..c3c6a90 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -74,37 +74,6 @@ enum {
cb_sequence_dec_sz + \
op_dec_sz)
-/*
- * Generic decode routines from fs/nfs/nfs4xdr.c
- */
-#define DECODE_TAIL \
- status = 0; \
-out: \
- return status; \
-xdr_error: \
- dprintk("NFSD: xdr error! (%s:%d)\n", __FILE__, __LINE__); \
- status = -EIO; \
- goto out
-
-#define READ32(x) (x) = ntohl(*p++)
-#define READ64(x) do { \
- (x) = (u64)ntohl(*p++) << 32; \
- (x) |= ntohl(*p++); \
-} while (0)
-#define READTIME(x) do { \
- p++; \
- (x.tv_sec) = ntohl(*p++); \
- (x.tv_nsec) = ntohl(*p++); \
-} while (0)
-#define READ_BUF(nbytes) do { \
- p = xdr_inline_decode(xdr, nbytes); \
- if (!p) { \
- dprintk("NFSD: %s: reply buffer overflowed in line %d.\n", \
- __func__, __LINE__); \
- return -EIO; \
- } \
-} while (0)
-
struct nfs4_cb_compound_hdr {
/* args */
u32 ident; /* minorversion 0 only */
@@ -115,57 +84,14 @@ struct nfs4_cb_compound_hdr {
int status;
};
-static struct {
-int stat;
-int errno;
-} nfs_cb_errtbl[] = {
- { NFS4_OK, 0 },
- { NFS4ERR_PERM, EPERM },
- { NFS4ERR_NOENT, ENOENT },
- { NFS4ERR_IO, EIO },
- { NFS4ERR_NXIO, ENXIO },
- { NFS4ERR_ACCESS, EACCES },
- { NFS4ERR_EXIST, EEXIST },
- { NFS4ERR_XDEV, EXDEV },
- { NFS4ERR_NOTDIR, ENOTDIR },
- { NFS4ERR_ISDIR, EISDIR },
- { NFS4ERR_INVAL, EINVAL },
- { NFS4ERR_FBIG, EFBIG },
- { NFS4ERR_NOSPC, ENOSPC },
- { NFS4ERR_ROFS, EROFS },
- { NFS4ERR_MLINK, EMLINK },
- { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
- { NFS4ERR_NOTEMPTY, ENOTEMPTY },
- { NFS4ERR_DQUOT, EDQUOT },
- { NFS4ERR_STALE, ESTALE },
- { NFS4ERR_BADHANDLE, EBADHANDLE },
- { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
- { NFS4ERR_NOTSUPP, ENOTSUPP },
- { NFS4ERR_TOOSMALL, ETOOSMALL },
- { NFS4ERR_SERVERFAULT, ESERVERFAULT },
- { NFS4ERR_BADTYPE, EBADTYPE },
- { NFS4ERR_LOCKED, EAGAIN },
- { NFS4ERR_RESOURCE, EREMOTEIO },
- { NFS4ERR_SYMLINK, ELOOP },
- { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
- { NFS4ERR_DEADLOCK, EDEADLK },
- { -1, EIO }
-};
-
-static int
-nfs_cb_stat_to_errno(int stat)
+/*
+ * Handle decode buffer overflows out-of-line.
+ */
+static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
{
- int i;
- for (i = 0; nfs_cb_errtbl[i].stat != -1; i++) {
- if (nfs_cb_errtbl[i].stat == stat)
- return nfs_cb_errtbl[i].errno;
- }
- /* If we cannot translate the error, the recovery routines should
- * handle it.
- * Note: remaining NFSv4 error codes have values > 10000, so should
- * not conflict with native Linux error codes.
- */
- return stat;
+ dprintk("NFS: %s prematurely hit the end of our receive buffer. "
+ "Remaining buffer length is %tu words.\n",
+ func, xdr->end - xdr->p);
}
static __be32 *xdr_encode_empty_array(__be32 *p)
@@ -263,6 +189,89 @@ static void encode_sessionid4(struct xdr_stream *xdr,
}
/*
+ * nfsstat4
+ */
+static const struct {
+ int stat;
+ int errno;
+} nfs_cb_errtbl[] = {
+ { NFS4_OK, 0 },
+ { NFS4ERR_PERM, -EPERM },
+ { NFS4ERR_NOENT, -ENOENT },
+ { NFS4ERR_IO, -EIO },
+ { NFS4ERR_NXIO, -ENXIO },
+ { NFS4ERR_ACCESS, -EACCES },
+ { NFS4ERR_EXIST, -EEXIST },
+ { NFS4ERR_XDEV, -EXDEV },
+ { NFS4ERR_NOTDIR, -ENOTDIR },
+ { NFS4ERR_ISDIR, -EISDIR },
+ { NFS4ERR_INVAL, -EINVAL },
+ { NFS4ERR_FBIG, -EFBIG },
+ { NFS4ERR_NOSPC, -ENOSPC },
+ { NFS4ERR_ROFS, -EROFS },
+ { NFS4ERR_MLINK, -EMLINK },
+ { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
+ { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
+ { NFS4ERR_DQUOT, -EDQUOT },
+ { NFS4ERR_STALE, -ESTALE },
+ { NFS4ERR_BADHANDLE, -EBADHANDLE },
+ { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
+ { NFS4ERR_NOTSUPP, -ENOTSUPP },
+ { NFS4ERR_TOOSMALL, -ETOOSMALL },
+ { NFS4ERR_SERVERFAULT, -ESERVERFAULT },
+ { NFS4ERR_BADTYPE, -EBADTYPE },
+ { NFS4ERR_LOCKED, -EAGAIN },
+ { NFS4ERR_RESOURCE, -EREMOTEIO },
+ { NFS4ERR_SYMLINK, -ELOOP },
+ { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
+ { NFS4ERR_DEADLOCK, -EDEADLK },
+ { -1, -EIO }
+};
+
+/*
+ * If we cannot translate the error, the recovery routines should
+ * handle it.
+ *
+ * Note: remaining NFSv4 error codes have values > 10000, so should
+ * not conflict with native Linux error codes.
+ */
+static int nfs_cb_stat_to_errno(int status)
+{
+ int i;
+
+ for (i = 0; nfs_cb_errtbl[i].stat != -1; i++) {
+ if (nfs_cb_errtbl[i].stat == status)
+ return nfs_cb_errtbl[i].errno;
+ }
+
+ dprintk("NFSD: Unrecognized NFS CB status value: %u\n", status);
+ return -status;
+}
+
+static int decode_cb_op_status(struct xdr_stream *xdr, enum nfs_opnum4 expected,
+ enum nfsstat4 *status)
+{
+ __be32 *p;
+ u32 op;
+
+ p = xdr_inline_decode(xdr, 4 + 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ op = be32_to_cpup(p++);
+ if (unlikely(op != expected))
+ goto out_unexpected;
+ *status = be32_to_cpup(p);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+out_unexpected:
+ dprintk("NFSD: Callback server returned operation %d but "
+ "we issued a request for %d\n", op, expected);
+ return -EIO;
+}
+
+/*
* CB_COMPOUND4args
*
* struct CB_COMPOUND4args {
@@ -296,6 +305,37 @@ static void encode_cb_nops(struct nfs4_cb_compound_hdr *hdr)
}
/*
+ * CB_COMPOUND4res
+ *
+ * struct CB_COMPOUND4res {
+ * nfsstat4 status;
+ * utf8str_cs tag;
+ * nfs_cb_resop4 resarray<>;
+ * };
+ */
+static int decode_cb_compound4res(struct xdr_stream *xdr,
+ struct nfs4_cb_compound_hdr *hdr)
+{
+ u32 length;
+ __be32 *p;
+
+ p = xdr_inline_decode(xdr, 4 + 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ hdr->status = be32_to_cpup(p++);
+ /* Ignore the tag */
+ length = be32_to_cpup(p++);
+ p = xdr_inline_decode(xdr, length + 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ hdr->nops = be32_to_cpup(p);
+ return 0;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+/*
* CB_RECALL4args
*
* struct CB_RECALL4args {
@@ -357,6 +397,97 @@ static void encode_cb_sequence4args(struct xdr_stream *xdr,
}
/*
+ * CB_SEQUENCE4resok
+ *
+ * struct CB_SEQUENCE4resok {
+ * sessionid4 csr_sessionid;
+ * sequenceid4 csr_sequenceid;
+ * slotid4 csr_slotid;
+ * slotid4 csr_highest_slotid;
+ * slotid4 csr_target_highest_slotid;
+ * };
+ *
+ * union CB_SEQUENCE4res switch (nfsstat4 csr_status) {
+ * case NFS4_OK:
+ * CB_SEQUENCE4resok csr_resok4;
+ * default:
+ * void;
+ * };
+ *
+ * Our current back channel implmentation supports a single backchannel
+ * with a single slot.
+ */
+static int decode_cb_sequence4resok(struct xdr_stream *xdr,
+ struct nfsd4_callback *cb)
+{
+ struct nfsd4_session *session = cb->cb_clp->cl_cb_session;
+ struct nfs4_sessionid id;
+ int status;
+ __be32 *p;
+ u32 dummy;
+
+ status = -ESERVERFAULT;
+
+ /*
+ * If the server returns different values for sessionID, slotID or
+ * sequence number, the server is looney tunes.
+ */
+ p = xdr_inline_decode(xdr, NFS4_MAX_SESSIONID_LEN + 4 + 4);
+ if (unlikely(p == NULL))
+ goto out_overflow;
+ memcpy(id.data, p, NFS4_MAX_SESSIONID_LEN);
+ if (memcmp(id.data, session->se_sessionid.data,
+ NFS4_MAX_SESSIONID_LEN) != 0) {
+ dprintk("NFS: %s Invalid session id\n", __func__);
+ goto out;
+ }
+ p += XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN);
+
+ dummy = be32_to_cpup(p++);
+ if (dummy != session->se_cb_seq_nr) {
+ dprintk("NFS: %s Invalid sequence number\n", __func__);
+ goto out;
+ }
+
+ dummy = be32_to_cpup(p++);
+ if (dummy != 0) {
+ dprintk("NFS: %s Invalid slotid\n", __func__);
+ goto out;
+ }
+
+ /*
+ * FIXME: process highest slotid and target highest slotid
+ */
+ status = 0;
+out:
+ return status;
+out_overflow:
+ print_overflow_msg(__func__, xdr);
+ return -EIO;
+}
+
+static int decode_cb_sequence4res(struct xdr_stream *xdr,
+ struct nfsd4_callback *cb)
+{
+ enum nfsstat4 nfserr;
+ int status;
+
+ if (cb->cb_minorversion == 0)
+ return 0;
+
+ status = decode_cb_op_status(xdr, OP_CB_SEQUENCE, &nfserr);
+ if (unlikely(status))
+ goto out;
+ if (unlikely(nfserr != NFS4_OK))
+ goto out_default;
+ status = decode_cb_sequence4resok(xdr, cb);
+out:
+ return status;
+out_default:
+ return nfs_cb_stat_to_errno(status);
+}
+
+/*
* NFSv4.0 and NFSv4.1 XDR encode functions
*
* NFSv4.0 callback argument types are defined in section 15 of RFC
@@ -399,119 +530,51 @@ static int nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p,
}
-static int
-decode_cb_compound_hdr(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr){
- __be32 *p;
- u32 taglen;
-
- READ_BUF(8);
- READ32(hdr->status);
- /* We've got no use for the tag; ignore it: */
- READ32(taglen);
- READ_BUF(taglen + 4);
- p += XDR_QUADLEN(taglen);
- READ32(hdr->nops);
- return 0;
-}
-
-static int
-decode_cb_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
-{
- __be32 *p;
- u32 op;
- int32_t nfserr;
-
- READ_BUF(8);
- READ32(op);
- if (op != expected) {
- dprintk("NFSD: decode_cb_op_hdr: Callback server returned "
- " operation %d but we issued a request for %d\n",
- op, expected);
- return -EIO;
- }
- READ32(nfserr);
- if (nfserr != NFS_OK)
- return -nfs_cb_stat_to_errno(nfserr);
- return 0;
-}
-
/*
- * Our current back channel implmentation supports a single backchannel
- * with a single slot.
+ * NFSv4.0 and NFSv4.1 XDR decode functions
+ *
+ * NFSv4.0 callback result types are defined in section 15 of RFC
+ * 3530: "Network File System (NFS) version 4 Protocol" and section 20
+ * of RFC 5661: "Network File System (NFS) Version 4 Minor Version 1
+ * Protocol".
*/
-static int
-decode_cb_sequence(struct xdr_stream *xdr, struct nfsd4_callback *cb,
- struct rpc_rqst *rqstp)
-{
- struct nfsd4_session *ses = cb->cb_clp->cl_cb_session;
- struct nfs4_sessionid id;
- int status;
- u32 dummy;
- __be32 *p;
-
- if (cb->cb_minorversion == 0)
- return 0;
-
- status = decode_cb_op_hdr(xdr, OP_CB_SEQUENCE);
- if (status)
- return status;
-
- /*
- * If the server returns different values for sessionID, slotID or
- * sequence number, the server is looney tunes.
- */
- status = -ESERVERFAULT;
-
- READ_BUF(NFS4_MAX_SESSIONID_LEN + 16);
- memcpy(id.data, p, NFS4_MAX_SESSIONID_LEN);
- p += XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN);
- if (memcmp(id.data, ses->se_sessionid.data, NFS4_MAX_SESSIONID_LEN)) {
- dprintk("%s Invalid session id\n", __func__);
- goto out;
- }
- READ32(dummy);
- if (dummy != ses->se_cb_seq_nr) {
- dprintk("%s Invalid sequence number\n", __func__);
- goto out;
- }
- READ32(dummy); /* slotid must be 0 */
- if (dummy != 0) {
- dprintk("%s Invalid slotid\n", __func__);
- goto out;
- }
- /* FIXME: process highest slotid and target highest slotid */
- status = 0;
-out:
- return status;
-}
-
-static int
-nfs4_xdr_dec_cb_null(struct rpc_rqst *req, __be32 *p)
+static int nfs4_xdr_dec_cb_null(struct rpc_rqst *req, __be32 *p, void *__unused)
{
return 0;
}
-static int
-nfs4_xdr_dec_cb_recall(struct rpc_rqst *rqstp, __be32 *p,
- struct nfsd4_callback *cb)
+/*
+ * 20.2. Operation 4: CB_RECALL - Recall a Delegation
+ */
+static int nfs4_xdr_dec_cb_recall(struct rpc_rqst *rqstp, __be32 *p,
+ struct nfsd4_callback *cb)
{
struct xdr_stream xdr;
struct nfs4_cb_compound_hdr hdr;
+ enum nfsstat4 nfserr;
int status;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_cb_compound_hdr(&xdr, &hdr);
- if (status)
+ status = decode_cb_compound4res(&xdr, &hdr);
+ if (unlikely(status))
goto out;
- if (cb) {
- status = decode_cb_sequence(&xdr, cb, rqstp);
- if (status)
+
+ if (cb != NULL) {
+ status = decode_cb_sequence4res(&xdr, cb);
+ if (unlikely(status))
goto out;
}
- status = decode_cb_op_hdr(&xdr, OP_CB_RECALL);
+
+ status = decode_cb_op_status(&xdr, OP_CB_RECALL, &nfserr);
+ if (unlikely(status))
+ goto out;
+ if (unlikely(nfserr != NFS4_OK))
+ goto out_default;
out:
return status;
+out_default:
+ return nfs_cb_stat_to_errno(status);
}
/*
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 20/31] NFS: Repair whitespace damage in NFS PROC macro
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (18 preceding siblings ...)
2010-12-14 14:57 ` [PATCH 19/31] NFSD: Update XDR decoders " Chuck Lever
@ 2010-12-14 14:57 ` Chuck Lever
2010-12-14 14:57 ` [PATCH 21/31] lockd: Move nlmdbg_cookie2a() to svclock.c Chuck Lever
` (11 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:57 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
When I was making other changes in this area, checkscript.pl
complained about the use of leading blanks in the PROC macros in the
xdr files.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs2xdr.c | 30 ++++++++--------
fs/nfs/nfs4xdr.c | 90 ++++++++++++++++++++++++------------------------
fs/nfsd/nfs4callback.c | 52 ++++++++++++++--------------
3 files changed, 86 insertions(+), 86 deletions(-)
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 70df08a..0343175 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -1193,21 +1193,21 @@ int nfs_stat_to_errno(enum nfs_stat status)
.p_name = #proc, \
}
struct rpc_procinfo nfs_procedures[] = {
- PROC(GETATTR, fhandle, attrstat, 1),
- PROC(SETATTR, sattrargs, attrstat, 0),
- PROC(LOOKUP, diropargs, diropres, 2),
- PROC(READLINK, readlinkargs, readlinkres, 3),
- PROC(READ, readargs, readres, 3),
- PROC(WRITE, writeargs, writeres, 4),
- PROC(CREATE, createargs, diropres, 0),
- PROC(REMOVE, removeargs, stat, 0),
- PROC(RENAME, renameargs, stat, 0),
- PROC(LINK, linkargs, stat, 0),
- PROC(SYMLINK, symlinkargs, stat, 0),
- PROC(MKDIR, createargs, diropres, 0),
- PROC(RMDIR, diropargs, stat, 0),
- PROC(READDIR, readdirargs, readdirres, 3),
- PROC(STATFS, fhandle, statfsres, 0),
+ PROC(GETATTR, fhandle, attrstat, 1),
+ PROC(SETATTR, sattrargs, attrstat, 0),
+ PROC(LOOKUP, diropargs, diropres, 2),
+ PROC(READLINK, readlinkargs, readlinkres, 3),
+ PROC(READ, readargs, readres, 3),
+ PROC(WRITE, writeargs, writeres, 4),
+ PROC(CREATE, createargs, diropres, 0),
+ PROC(REMOVE, removeargs, stat, 0),
+ PROC(RENAME, renameargs, stat, 0),
+ PROC(LINK, linkargs, stat, 0),
+ PROC(SYMLINK, symlinkargs, stat, 0),
+ PROC(MKDIR, createargs, diropres, 0),
+ PROC(RMDIR, diropargs, stat, 0),
+ PROC(READDIR, readdirargs, readdirres, 3),
+ PROC(STATFS, fhandle, statfsres, 0),
};
struct rpc_version nfs_version2 = {
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 9f1826b..a48a43c 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -6301,8 +6301,8 @@ nfs4_stat_to_errno(int stat)
#define PROC(proc, argtype, restype) \
[NFSPROC4_CLNT_##proc] = { \
.p_proc = NFSPROC4_COMPOUND, \
- .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
- .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
+ .p_encode = (kxdrproc_t)nfs4_xdr_##argtype, \
+ .p_decode = (kxdrproc_t)nfs4_xdr_##restype, \
.p_arglen = NFS4_##argtype##_sz, \
.p_replen = NFS4_##restype##_sz, \
.p_statidx = NFSPROC4_CLNT_##proc, \
@@ -6310,50 +6310,50 @@ nfs4_stat_to_errno(int stat)
}
struct rpc_procinfo nfs4_procedures[] = {
- PROC(READ, enc_read, dec_read),
- PROC(WRITE, enc_write, dec_write),
- PROC(COMMIT, enc_commit, dec_commit),
- PROC(OPEN, enc_open, dec_open),
- PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
- PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
- PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
- PROC(CLOSE, enc_close, dec_close),
- PROC(SETATTR, enc_setattr, dec_setattr),
- PROC(FSINFO, enc_fsinfo, dec_fsinfo),
- PROC(RENEW, enc_renew, dec_renew),
- PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
- PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
- PROC(LOCK, enc_lock, dec_lock),
- PROC(LOCKT, enc_lockt, dec_lockt),
- PROC(LOCKU, enc_locku, dec_locku),
- PROC(ACCESS, enc_access, dec_access),
- PROC(GETATTR, enc_getattr, dec_getattr),
- PROC(LOOKUP, enc_lookup, dec_lookup),
- PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
- PROC(REMOVE, enc_remove, dec_remove),
- PROC(RENAME, enc_rename, dec_rename),
- PROC(LINK, enc_link, dec_link),
- PROC(SYMLINK, enc_symlink, dec_symlink),
- PROC(CREATE, enc_create, dec_create),
- PROC(PATHCONF, enc_pathconf, dec_pathconf),
- PROC(STATFS, enc_statfs, dec_statfs),
- PROC(READLINK, enc_readlink, dec_readlink),
- PROC(READDIR, enc_readdir, dec_readdir),
- PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
- PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
- PROC(GETACL, enc_getacl, dec_getacl),
- PROC(SETACL, enc_setacl, dec_setacl),
- PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
- PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
+ PROC(READ, enc_read, dec_read),
+ PROC(WRITE, enc_write, dec_write),
+ PROC(COMMIT, enc_commit, dec_commit),
+ PROC(OPEN, enc_open, dec_open),
+ PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
+ PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
+ PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
+ PROC(CLOSE, enc_close, dec_close),
+ PROC(SETATTR, enc_setattr, dec_setattr),
+ PROC(FSINFO, enc_fsinfo, dec_fsinfo),
+ PROC(RENEW, enc_renew, dec_renew),
+ PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
+ PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
+ PROC(LOCK, enc_lock, dec_lock),
+ PROC(LOCKT, enc_lockt, dec_lockt),
+ PROC(LOCKU, enc_locku, dec_locku),
+ PROC(ACCESS, enc_access, dec_access),
+ PROC(GETATTR, enc_getattr, dec_getattr),
+ PROC(LOOKUP, enc_lookup, dec_lookup),
+ PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
+ PROC(REMOVE, enc_remove, dec_remove),
+ PROC(RENAME, enc_rename, dec_rename),
+ PROC(LINK, enc_link, dec_link),
+ PROC(SYMLINK, enc_symlink, dec_symlink),
+ PROC(CREATE, enc_create, dec_create),
+ PROC(PATHCONF, enc_pathconf, dec_pathconf),
+ PROC(STATFS, enc_statfs, dec_statfs),
+ PROC(READLINK, enc_readlink, dec_readlink),
+ PROC(READDIR, enc_readdir, dec_readdir),
+ PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
+ PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
+ PROC(GETACL, enc_getacl, dec_getacl),
+ PROC(SETACL, enc_setacl, dec_setacl),
+ PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
+ PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
#if defined(CONFIG_NFS_V4_1)
- PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
- PROC(CREATE_SESSION, enc_create_session, dec_create_session),
- PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
- PROC(SEQUENCE, enc_sequence, dec_sequence),
- PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
- PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
- PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
- PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
+ PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
+ PROC(CREATE_SESSION, enc_create_session, dec_create_session),
+ PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
+ PROC(SEQUENCE, enc_sequence, dec_sequence),
+ PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
+ PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
+ PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
+ PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
#endif /* CONFIG_NFS_V4_1 */
};
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index c3c6a90..6529534 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -580,23 +580,23 @@ out_default:
/*
* RPC procedure tables
*/
-#define PROC(proc, call, argtype, restype) \
-[NFSPROC4_CLNT_##proc] = { \
- .p_proc = NFSPROC4_CB_##call, \
- .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
- .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
- .p_arglen = NFS4_##argtype##_sz, \
- .p_replen = NFS4_##restype##_sz, \
- .p_statidx = NFSPROC4_CB_##call, \
- .p_name = #proc, \
-}
-
-static struct rpc_procinfo nfs4_cb_procedures[] = {
- PROC(CB_NULL, NULL, enc_cb_null, dec_cb_null),
- PROC(CB_RECALL, COMPOUND, enc_cb_recall, dec_cb_recall),
+#define PROC(proc, call, argtype, restype) \
+[NFSPROC4_CLNT_##proc] = { \
+ .p_proc = NFSPROC4_CB_##call, \
+ .p_encode = (kxdrproc_t)nfs4_xdr_enc_##argtype, \
+ .p_decode = (kxdrproc_t)nfs4_xdr_dec_##restype, \
+ .p_arglen = NFS4_enc_##argtype##_sz, \
+ .p_replen = NFS4_dec_##restype##_sz, \
+ .p_statidx = NFSPROC4_CB_##call, \
+ .p_name = #proc, \
+}
+
+static struct rpc_procinfo nfs4_cb_procedures[] = {
+ PROC(CB_NULL, NULL, cb_null, cb_null),
+ PROC(CB_RECALL, COMPOUND, cb_recall, cb_recall),
};
-static struct rpc_version nfs_cb_version4 = {
+static struct rpc_version nfs_cb_version4 = {
/*
* Note on the callback rpc program version number: despite language in rfc
* 5661 section 18.36.3 requiring servers to use 4 in this field, the
@@ -604,29 +604,29 @@ static struct rpc_version nfs_cb_version4 = {
* in practice that appears to be what implementations use. The section
* 18.36.3 language is expected to be fixed in an erratum.
*/
- .number = 1,
- .nrprocs = ARRAY_SIZE(nfs4_cb_procedures),
- .procs = nfs4_cb_procedures
+ .number = 1,
+ .nrprocs = ARRAY_SIZE(nfs4_cb_procedures),
+ .procs = nfs4_cb_procedures
};
-static struct rpc_version * nfs_cb_version[] = {
+static struct rpc_version *nfs_cb_version[] = {
&nfs_cb_version4,
};
static struct rpc_program cb_program;
static struct rpc_stat cb_stats = {
- .program = &cb_program
+ .program = &cb_program
};
#define NFS4_CALLBACK 0x40000000
static struct rpc_program cb_program = {
- .name = "nfs4_cb",
- .number = NFS4_CALLBACK,
- .nrvers = ARRAY_SIZE(nfs_cb_version),
- .version = nfs_cb_version,
- .stats = &cb_stats,
- .pipe_dir_name = "/nfsd4_cb",
+ .name = "nfs4_cb",
+ .number = NFS4_CALLBACK,
+ .nrvers = ARRAY_SIZE(nfs_cb_version),
+ .version = nfs_cb_version,
+ .stats = &cb_stats,
+ .pipe_dir_name = "/nfsd4_cb",
};
static int max_cb_time(void)
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 21/31] lockd: Move nlmdbg_cookie2a() to svclock.c
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (19 preceding siblings ...)
2010-12-14 14:57 ` [PATCH 20/31] NFS: Repair whitespace damage in NFS PROC macro Chuck Lever
@ 2010-12-14 14:57 ` Chuck Lever
2010-12-14 14:58 ` [PATCH 22/31] NFS: Fix hdrlen calculation in NFSv4's decode_read() Chuck Lever
` (10 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:57 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up. nlmdbg_cookie2a() is used only in svclock.c.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/lockd/svclock.c | 30 ++++++++++++++++++++++++++++++
fs/lockd/xdr.c | 29 -----------------------------
include/linux/lockd/debug.h | 10 ----------
3 files changed, 30 insertions(+), 39 deletions(-)
diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index ef5659b..9266c46 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -46,6 +46,7 @@ static void nlmsvc_remove_block(struct nlm_block *block);
static int nlmsvc_setgrantargs(struct nlm_rqst *call, struct nlm_lock *lock);
static void nlmsvc_freegrantargs(struct nlm_rqst *call);
static const struct rpc_call_ops nlmsvc_grant_ops;
+static const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie);
/*
* The list of blocked locks to retry
@@ -934,3 +935,32 @@ nlmsvc_retry_blocked(void)
return timeout;
}
+
+#ifdef RPC_DEBUG
+static const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie)
+{
+ /*
+ * We can get away with a static buffer because we're only
+ * called with BKL held.
+ */
+ static char buf[2*NLM_MAXCOOKIELEN+1];
+ unsigned int i, len = sizeof(buf);
+ char *p = buf;
+
+ len--; /* allow for trailing \0 */
+ if (len < 3)
+ return "???";
+ for (i = 0 ; i < cookie->len ; i++) {
+ if (len < 2) {
+ strcpy(p-3, "...");
+ break;
+ }
+ sprintf(p, "%02x", cookie->data[i]);
+ p += 2;
+ len -= 2;
+ }
+ *p = '\0';
+
+ return buf;
+}
+#endif
diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c
index 0eb694d..964666c 100644
--- a/fs/lockd/xdr.c
+++ b/fs/lockd/xdr.c
@@ -341,32 +341,3 @@ nlmsvc_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy)
{
return xdr_ressize_check(rqstp, p);
}
-
-#ifdef RPC_DEBUG
-const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie)
-{
- /*
- * We can get away with a static buffer because we're only
- * called with BKL held.
- */
- static char buf[2*NLM_MAXCOOKIELEN+1];
- unsigned int i, len = sizeof(buf);
- char *p = buf;
-
- len--; /* allow for trailing \0 */
- if (len < 3)
- return "???";
- for (i = 0 ; i < cookie->len ; i++) {
- if (len < 2) {
- strcpy(p-3, "...");
- break;
- }
- sprintf(p, "%02x", cookie->data[i]);
- p += 2;
- len -= 2;
- }
- *p = '\0';
-
- return buf;
-}
-#endif
diff --git a/include/linux/lockd/debug.h b/include/linux/lockd/debug.h
index 34b2b7f..257d377 100644
--- a/include/linux/lockd/debug.h
+++ b/include/linux/lockd/debug.h
@@ -44,14 +44,4 @@
#define NLMDBG_XDR 0x0100
#define NLMDBG_ALL 0x7fff
-
-/*
- * Support for printing NLM cookies in dprintk()
- */
-#ifdef RPC_DEBUG
-struct nlm_cookie;
-/* Call this function with the BKL held (it uses a static buffer) */
-extern const char *nlmdbg_cookie2a(const struct nlm_cookie *);
-#endif
-
#endif /* LINUX_LOCKD_DEBUG_H */
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 22/31] NFS: Fix hdrlen calculation in NFSv4's decode_read()
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (20 preceding siblings ...)
2010-12-14 14:57 ` [PATCH 21/31] lockd: Move nlmdbg_cookie2a() to svclock.c Chuck Lever
@ 2010-12-14 14:58 ` Chuck Lever
2010-12-14 14:58 ` [PATCH 23/31] NFS: Simplify ->decode_dirent() calling sequence Chuck Lever
` (9 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:58 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
When computing the length of the header, be sure to include the
four octets consumed by "count".
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs4xdr.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index a48a43c..868815c 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -4475,7 +4475,7 @@ static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_
goto out_overflow;
eof = be32_to_cpup(p++);
count = be32_to_cpup(p);
- hdrlen = (u8 *) p - (u8 *) iov->iov_base;
+ hdrlen = (u8 *) xdr->p - (u8 *) iov->iov_base;
recvd = req->rq_rcv_buf.len - hdrlen;
if (count > recvd) {
dprintk("NFS: server cheating in read reply: "
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 23/31] NFS: Simplify ->decode_dirent() calling sequence
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (21 preceding siblings ...)
2010-12-14 14:58 ` [PATCH 22/31] NFS: Fix hdrlen calculation in NFSv4's decode_read() Chuck Lever
@ 2010-12-14 14:58 ` Chuck Lever
2010-12-14 14:58 ` [PATCH 24/31] NFS: Squelch compiler warning in decode_getdeviceinfo() Chuck Lever
` (8 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:58 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
The pointer returned by ->decode_dirent() is no longer used as a
pointer. The only call site (xdr_decode() in fs/nfs/dir.c) simply
extracts the errno value encoded in the pointer. Replace the
returned pointer with a standard integer errno return value.
Also, pass the "server" argument as part of the nfs_entry instead of
as a separate parameter. It's faster to derive "server" in
nfs_readdir_xdr_to_array() since we already have the directory's inode
handy. "server" ought to be invariant for a set of entries in the
same directory, right?
The legacy versions of decode_dirent() don't use "server" anyway, so
it's wasted work for them to derive and pass "server" for each entry.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/dir.c | 15 ++++++++-------
fs/nfs/internal.h | 9 ++++++---
fs/nfs/nfs2xdr.c | 18 +++++++++---------
fs/nfs/nfs3xdr.c | 28 ++++++++++++++--------------
fs/nfs/nfs4_fs.h | 1 -
fs/nfs/nfs4xdr.c | 29 ++++++++++++++++++++++-------
include/linux/nfs_xdr.h | 3 ++-
7 files changed, 61 insertions(+), 42 deletions(-)
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index f0a384e..0899254 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -172,7 +172,7 @@ struct nfs_cache_array {
struct nfs_cache_array_entry array[0];
};
-typedef __be32 * (*decode_dirent_t)(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
+typedef int (*decode_dirent_t)(struct xdr_stream *, struct nfs_entry *, int);
typedef struct {
struct file *file;
struct page *page;
@@ -379,14 +379,14 @@ error:
return error;
}
-/* Fill in an entry based on the xdr code stored in desc->page */
-static
-int xdr_decode(nfs_readdir_descriptor_t *desc, struct nfs_entry *entry, struct xdr_stream *stream)
+static int xdr_decode(nfs_readdir_descriptor_t *desc,
+ struct nfs_entry *entry, struct xdr_stream *xdr)
{
- __be32 *p = desc->decode(stream, entry, NFS_SERVER(desc->file->f_path.dentry->d_inode), desc->plus);
- if (IS_ERR(p))
- return PTR_ERR(p);
+ int error;
+ error = desc->decode(xdr, entry, desc->plus);
+ if (error)
+ return error;
entry->fattr->time_start = desc->timestamp;
entry->fattr->gencount = desc->gencount;
return 0;
@@ -567,6 +567,7 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
entry.eof = 0;
entry.fh = nfs_alloc_fhandle();
entry.fattr = nfs_alloc_fattr();
+ entry.server = NFS_SERVER(inode);
if (entry.fh == NULL || entry.fattr == NULL)
goto out;
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 71b726c..0b8eed8 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -187,15 +187,18 @@ extern void nfs_destroy_directcache(void);
/* nfs2xdr.c */
extern int nfs_stat_to_errno(enum nfs_stat);
extern struct rpc_procinfo nfs_procedures[];
-extern __be32 *nfs2_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
+extern int nfs2_decode_dirent(struct xdr_stream *,
+ struct nfs_entry *, int);
/* nfs3xdr.c */
extern struct rpc_procinfo nfs3_procedures[];
-extern __be32 *nfs3_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
+extern int nfs3_decode_dirent(struct xdr_stream *,
+ struct nfs_entry *, int);
/* nfs4xdr.c */
#ifdef CONFIG_NFS_V4
-extern __be32 *nfs4_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
+extern int nfs4_decode_dirent(struct xdr_stream *,
+ struct nfs_entry *, int);
#endif
#ifdef CONFIG_NFS_V4_1
extern const u32 nfs41_maxread_overhead;
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 0343175..a9b848e 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -936,10 +936,10 @@ static int nfs2_xdr_dec_writeres(struct rpc_rqst *req, __be32 *p,
* the local page cache.
* @xdr: XDR stream where entry resides
* @entry: buffer to fill in with entry data
- * @server: nfs_server data for this directory
* @plus: boolean indicating whether this should be a readdirplus entry
*
- * Returns the position of the next item in the buffer, or an ERR_PTR.
+ * Returns zero if successful, otherwise a negative errno value is
+ * returned.
*
* This function is not invoked during READDIR reply decoding, but
* rather whenever an application invokes the getdents(2) system call
@@ -954,8 +954,8 @@ static int nfs2_xdr_dec_writeres(struct rpc_rqst *req, __be32 *p,
* entry *nextentry;
* };
*/
-__be32 *nfs2_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
- struct nfs_server *server, int plus)
+int nfs2_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
+ int plus)
{
__be32 *p;
int error;
@@ -968,9 +968,9 @@ __be32 *nfs2_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
if (unlikely(p == NULL))
goto out_overflow;
if (*p++ == xdr_zero)
- return ERR_PTR(-EAGAIN);
+ return -EAGAIN;
entry->eof = 1;
- return ERR_PTR(-EBADCOOKIE);
+ return -EBADCOOKIE;
}
p = xdr_inline_decode(xdr, 4);
@@ -980,7 +980,7 @@ __be32 *nfs2_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
error = decode_filename_inline(xdr, &entry->name, &entry->len);
if (unlikely(error))
- return ERR_PTR(error);
+ return error;
/*
* The type (size and byte order) of nfscookie isn't defined in
@@ -999,11 +999,11 @@ __be32 *nfs2_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
entry->eof = 0;
if (p != NULL)
entry->eof = (p[0] == xdr_zero) && (p[1] != xdr_zero);
- return p;
+ return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
- return ERR_PTR(-EAGAIN);
+ return -EAGAIN;
}
/*
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index c97d00f..15c93cc 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -1970,10 +1970,10 @@ out_status:
* the local page cache
* @xdr: XDR stream where entry resides
* @entry: buffer to fill in with entry data
- * @server: nfs_server data for this directory
* @plus: boolean indicating whether this should be a readdirplus entry
*
- * Returns the position of the next item in the buffer, or an ERR_PTR.
+ * Returns zero if successful, otherwise a negative errno value is
+ * returned.
*
* This function is not invoked during READDIR reply decoding, but
* rather whenever an application invokes the getdents(2) system call
@@ -2000,8 +2000,8 @@ out_status:
* entryplus3 *nextentry;
* };
*/
-__be32 *nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
- struct nfs_server *server, int plus)
+int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
+ int plus)
{
struct nfs_entry old = *entry;
__be32 *p;
@@ -2015,23 +2015,23 @@ __be32 *nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
if (unlikely(p == NULL))
goto out_overflow;
if (*p == xdr_zero)
- return ERR_PTR(-EAGAIN);
+ return -EAGAIN;
entry->eof = 1;
- return ERR_PTR(-EBADCOOKIE);
+ return -EBADCOOKIE;
}
error = decode_fileid3(xdr, &entry->ino);
if (unlikely(error))
- return ERR_PTR(error);
+ return error;
error = decode_inline_filename3(xdr, &entry->name, &entry->len);
if (unlikely(error))
- return ERR_PTR(error);
+ return error;
entry->prev_cookie = entry->cookie;
error = decode_cookie3(xdr, &entry->cookie);
if (unlikely(error))
- return ERR_PTR(error);
+ return error;
entry->d_type = DT_UNKNOWN;
@@ -2039,7 +2039,7 @@ __be32 *nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
entry->fattr->valid = 0;
error = decode_post_op_attr(xdr, entry->fattr);
if (unlikely(error))
- return ERR_PTR(error);
+ return error;
if (entry->fattr->valid & NFS_ATTR_FATTR_V3)
entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
@@ -2052,7 +2052,7 @@ __be32 *nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
if (unlikely(error)) {
if (error == -E2BIG)
goto out_truncated;
- return ERR_PTR(error);
+ return error;
}
} else
zero_nfs_fh3(entry->fh);
@@ -2063,15 +2063,15 @@ __be32 *nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
entry->eof = 0;
if (p != NULL)
entry->eof = (p[0] == xdr_zero) && (p[1] != xdr_zero);
- return p;
+ return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
- return ERR_PTR(-EAGAIN);
+ return -EAGAIN;
out_truncated:
dprintk("NFS: directory entry contains invalid file handle\n");
*entry = old;
- return ERR_PTR(-EAGAIN);
+ return -EAGAIN;
}
/*
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 9fa4963..7a6eecf 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -331,7 +331,6 @@ extern void nfs_free_seqid(struct nfs_seqid *seqid);
extern const nfs4_stateid zero_stateid;
/* nfs4xdr.c */
-extern __be32 *nfs4_decode_dirent(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
extern struct rpc_procinfo nfs4_procedures[];
struct nfs4_mount_data;
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 868815c..be9f00a 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -6159,8 +6159,22 @@ out:
}
#endif /* CONFIG_NFS_V4_1 */
-__be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
- struct nfs_server *server, int plus)
+/**
+ * nfs4_decode_dirent - Decode a single NFSv4 directory entry stored in
+ * the local page cache.
+ * @xdr: XDR stream where entry resides
+ * @entry: buffer to fill in with entry data
+ * @plus: boolean indicating whether this should be a readdirplus entry
+ *
+ * Returns zero if successful, otherwise a negative errno value is
+ * returned.
+ *
+ * This function is not invoked during READDIR reply decoding, but
+ * rather whenever an application invokes the getdents(2) system call
+ * on a directory already in our cache.
+ */
+int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
+ int plus)
{
uint32_t bitmap[2] = {0};
uint32_t len;
@@ -6172,9 +6186,9 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
if (unlikely(!p))
goto out_overflow;
if (!ntohl(*p++))
- return ERR_PTR(-EAGAIN);
+ return -EAGAIN;
entry->eof = 1;
- return ERR_PTR(-EBADCOOKIE);
+ return -EBADCOOKIE;
}
p = xdr_inline_decode(xdr, 12);
@@ -6203,7 +6217,8 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
if (decode_attr_length(xdr, &len, &p) < 0)
goto out_overflow;
- if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, server, 1) < 0)
+ if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh,
+ entry->server, 1) < 0)
goto out_overflow;
if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
entry->ino = entry->fattr->fileid;
@@ -6221,11 +6236,11 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
else
entry->eof = 0;
- return p;
+ return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
- return ERR_PTR(-EAGAIN);
+ return -EAGAIN;
}
/*
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 80f0719..236e7e4 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -484,6 +484,7 @@ struct nfs_entry {
struct nfs_fh * fh;
struct nfs_fattr * fattr;
unsigned char d_type;
+ struct nfs_server * server;
};
/*
@@ -1089,7 +1090,7 @@ struct nfs_rpc_ops {
int (*pathconf) (struct nfs_server *, struct nfs_fh *,
struct nfs_pathconf *);
int (*set_capabilities)(struct nfs_server *, struct nfs_fh *);
- __be32 *(*decode_dirent)(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int plus);
+ int (*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
void (*read_setup) (struct nfs_read_data *, struct rpc_message *);
int (*read_done) (struct rpc_task *, struct nfs_read_data *);
void (*write_setup) (struct nfs_write_data *, struct rpc_message *);
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 24/31] NFS: Squelch compiler warning in decode_getdeviceinfo()
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (22 preceding siblings ...)
2010-12-14 14:58 ` [PATCH 23/31] NFS: Simplify ->decode_dirent() calling sequence Chuck Lever
@ 2010-12-14 14:58 ` Chuck Lever
2010-12-14 14:58 ` [PATCH 25/31] NSM: Avoid return code checking in NSM XDR encoder functions Chuck Lever
` (7 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:58 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
.../linux/nfs-2.6/fs/nfs/nfs4xdr.c: In function ‘decode_getdeviceinfo’:
.../linux/nfs-2.6/fs/nfs/nfs4xdr.c:5008: warning: comparison between signed and unsigned integer expressions
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/nfs4xdr.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index be9f00a..a15fe99 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -5000,7 +5000,7 @@ static int decode_getdeviceinfo(struct xdr_stream *xdr,
goto out_overflow;
len = be32_to_cpup(p);
if (len) {
- int i;
+ uint32_t i;
p = xdr_inline_decode(xdr, 4 * len);
if (unlikely(!p))
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 25/31] NSM: Avoid return code checking in NSM XDR encoder functions
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (23 preceding siblings ...)
2010-12-14 14:58 ` [PATCH 24/31] NFS: Squelch compiler warning in decode_getdeviceinfo() Chuck Lever
@ 2010-12-14 14:58 ` Chuck Lever
2010-12-14 14:58 ` [PATCH 26/31] NFS: Avoid return code checking in mount " Chuck Lever
` (6 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:58 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
The trend in the other XDR encoder functions is to BUG() when encoding
problems occur, since a problem here is always due to a local coding
error. Then, instead of a status, zero is unconditionally returned.
Update the NSM XDR encoders to behave this way.
To finish the update, use the new-style be32_to_cpup() and
cpu_to_be32() macros, and compute the buffer sizes using raw integers
instead of sizeof(). This matches the conventions used in other XDR
functions
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/lockd/mon.c | 68 +++++++++++++++++++++-----------------------------------
1 files changed, 25 insertions(+), 43 deletions(-)
diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c
index e0c9189..d812818 100644
--- a/fs/lockd/mon.c
+++ b/fs/lockd/mon.c
@@ -401,26 +401,22 @@ void nsm_release(struct nsm_handle *nsm)
* Status Monitor wire protocol.
*/
-static int encode_nsm_string(struct xdr_stream *xdr, const char *string)
+static void encode_nsm_string(struct xdr_stream *xdr, const char *string)
{
const u32 len = strlen(string);
__be32 *p;
- if (unlikely(len > SM_MAXSTRLEN))
- return -EIO;
- p = xdr_reserve_space(xdr, sizeof(u32) + len);
- if (unlikely(p == NULL))
- return -EIO;
+ BUG_ON(len > SM_MAXSTRLEN);
+ p = xdr_reserve_space(xdr, 4 + len);
xdr_encode_opaque(p, string, len);
- return 0;
}
/*
* "mon_name" specifies the host to be monitored.
*/
-static int encode_mon_name(struct xdr_stream *xdr, const struct nsm_args *argp)
+static void encode_mon_name(struct xdr_stream *xdr, const struct nsm_args *argp)
{
- return encode_nsm_string(xdr, argp->mon_name);
+ encode_nsm_string(xdr, argp->mon_name);
}
/*
@@ -429,35 +425,25 @@ static int encode_mon_name(struct xdr_stream *xdr, const struct nsm_args *argp)
* (via the NLMPROC_SM_NOTIFY call) that the state of host "mon_name"
* has changed.
*/
-static int encode_my_id(struct xdr_stream *xdr, const struct nsm_args *argp)
+static void encode_my_id(struct xdr_stream *xdr, const struct nsm_args *argp)
{
- int status;
__be32 *p;
- status = encode_nsm_string(xdr, utsname()->nodename);
- if (unlikely(status != 0))
- return status;
- p = xdr_reserve_space(xdr, 3 * sizeof(u32));
- if (unlikely(p == NULL))
- return -EIO;
- *p++ = htonl(argp->prog);
- *p++ = htonl(argp->vers);
- *p++ = htonl(argp->proc);
- return 0;
+ encode_nsm_string(xdr, utsname()->nodename);
+ p = xdr_reserve_space(xdr, 4 + 4 + 4);
+ *p++ = cpu_to_be32(argp->prog);
+ *p++ = cpu_to_be32(argp->vers);
+ *p = cpu_to_be32(argp->proc);
}
/*
* The "mon_id" argument specifies the non-private arguments
* of an NSMPROC_MON or NSMPROC_UNMON call.
*/
-static int encode_mon_id(struct xdr_stream *xdr, const struct nsm_args *argp)
+static void encode_mon_id(struct xdr_stream *xdr, const struct nsm_args *argp)
{
- int status;
-
- status = encode_mon_name(xdr, argp);
- if (unlikely(status != 0))
- return status;
- return encode_my_id(xdr, argp);
+ encode_mon_name(xdr, argp);
+ encode_my_id(xdr, argp);
}
/*
@@ -465,28 +451,23 @@ static int encode_mon_id(struct xdr_stream *xdr, const struct nsm_args *argp)
* by the NSMPROC_MON call. This information will be supplied in the
* NLMPROC_SM_NOTIFY call.
*/
-static int encode_priv(struct xdr_stream *xdr, const struct nsm_args *argp)
+static void encode_priv(struct xdr_stream *xdr, const struct nsm_args *argp)
{
__be32 *p;
p = xdr_reserve_space(xdr, SM_PRIV_SIZE);
- if (unlikely(p == NULL))
- return -EIO;
xdr_encode_opaque_fixed(p, argp->priv->data, SM_PRIV_SIZE);
- return 0;
}
static int xdr_enc_mon(struct rpc_rqst *req, __be32 *p,
const struct nsm_args *argp)
{
struct xdr_stream xdr;
- int status;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- status = encode_mon_id(&xdr, argp);
- if (unlikely(status))
- return status;
- return encode_priv(&xdr, argp);
+ encode_mon_id(&xdr, argp);
+ encode_priv(&xdr, argp);
+ return 0;
}
static int xdr_enc_unmon(struct rpc_rqst *req, __be32 *p,
@@ -495,7 +476,8 @@ static int xdr_enc_unmon(struct rpc_rqst *req, __be32 *p,
struct xdr_stream xdr;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- return encode_mon_id(&xdr, argp);
+ encode_mon_id(&xdr, argp);
+ return 0;
}
static int xdr_dec_stat_res(struct rpc_rqst *rqstp, __be32 *p,
@@ -504,11 +486,11 @@ static int xdr_dec_stat_res(struct rpc_rqst *rqstp, __be32 *p,
struct xdr_stream xdr;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- p = xdr_inline_decode(&xdr, 2 * sizeof(u32));
+ p = xdr_inline_decode(&xdr, 4 + 4);
if (unlikely(p == NULL))
return -EIO;
- resp->status = ntohl(*p++);
- resp->state = ntohl(*p);
+ resp->status = be32_to_cpup(p++);
+ resp->state = be32_to_cpup(p);
dprintk("lockd: xdr_dec_stat_res status %d state %d\n",
resp->status, resp->state);
@@ -521,10 +503,10 @@ static int xdr_dec_stat(struct rpc_rqst *rqstp, __be32 *p,
struct xdr_stream xdr;
xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- p = xdr_inline_decode(&xdr, sizeof(u32));
+ p = xdr_inline_decode(&xdr, 4);
if (unlikely(p == NULL))
return -EIO;
- resp->state = ntohl(*p);
+ resp->state = be32_to_cpup(p);
dprintk("lockd: xdr_dec_stat state %d\n", resp->state);
return 0;
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 26/31] NFS: Avoid return code checking in mount XDR encoder functions
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (24 preceding siblings ...)
2010-12-14 14:58 ` [PATCH 25/31] NSM: Avoid return code checking in NSM XDR encoder functions Chuck Lever
@ 2010-12-14 14:58 ` Chuck Lever
2010-12-14 14:58 ` [PATCH 27/31] NFS: Remove unused UMNT response data structure Chuck Lever
` (5 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:58 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
The trend in the other XDR encoder functions is to BUG() when encoding
problems occur, since a problem here is always due to a local coding
error. Then, instead of a status, zero is unconditionally returned.
Update the mount client XDR encoders to behave this way.
To finish the update, use the new-style be32_to_cpup() and
cpu_to_be32() macros, and compute the buffer sizes using raw integers
instead of sizeof(). This matches the conventions used in other XDR
functions.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/nfs/mount_clnt.c | 35 +++++++++++++++--------------------
1 files changed, 15 insertions(+), 20 deletions(-)
diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index 4f981f1..c82547e 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -280,20 +280,14 @@ out_call_err:
* XDR encode/decode functions for MOUNT
*/
-static int encode_mntdirpath(struct xdr_stream *xdr, const char *pathname)
+static void encode_mntdirpath(struct xdr_stream *xdr, const char *pathname)
{
const u32 pathname_len = strlen(pathname);
__be32 *p;
- if (unlikely(pathname_len > MNTPATHLEN))
- return -EIO;
-
- p = xdr_reserve_space(xdr, sizeof(u32) + pathname_len);
- if (unlikely(p == NULL))
- return -EIO;
+ BUG_ON(pathname_len > MNTPATHLEN);
+ p = xdr_reserve_space(xdr, 4 + pathname_len);
xdr_encode_opaque(p, pathname, pathname_len);
-
- return 0;
}
static int mnt_enc_dirpath(struct rpc_rqst *req, __be32 *p,
@@ -302,7 +296,8 @@ static int mnt_enc_dirpath(struct rpc_rqst *req, __be32 *p,
struct xdr_stream xdr;
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- return encode_mntdirpath(&xdr, dirpath);
+ encode_mntdirpath(&xdr, dirpath);
+ return 0;
}
/*
@@ -320,10 +315,10 @@ static int decode_status(struct xdr_stream *xdr, struct mountres *res)
u32 status;
__be32 *p;
- p = xdr_inline_decode(xdr, sizeof(status));
+ p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return -EIO;
- status = ntohl(*p);
+ status = be32_to_cpup(p);
for (i = 0; i < ARRAY_SIZE(mnt_errtbl); i++) {
if (mnt_errtbl[i].status == status) {
@@ -371,10 +366,10 @@ static int decode_fhs_status(struct xdr_stream *xdr, struct mountres *res)
u32 status;
__be32 *p;
- p = xdr_inline_decode(xdr, sizeof(status));
+ p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return -EIO;
- status = ntohl(*p);
+ status = be32_to_cpup(p);
for (i = 0; i < ARRAY_SIZE(mnt3_errtbl); i++) {
if (mnt3_errtbl[i].status == status) {
@@ -394,11 +389,11 @@ static int decode_fhandle3(struct xdr_stream *xdr, struct mountres *res)
u32 size;
__be32 *p;
- p = xdr_inline_decode(xdr, sizeof(size));
+ p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return -EIO;
- size = ntohl(*p++);
+ size = be32_to_cpup(p);
if (size > NFS3_FHSIZE || size == 0)
return -EIO;
@@ -421,15 +416,15 @@ static int decode_auth_flavors(struct xdr_stream *xdr, struct mountres *res)
if (*count == 0)
return 0;
- p = xdr_inline_decode(xdr, sizeof(entries));
+ p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return -EIO;
- entries = ntohl(*p);
+ entries = be32_to_cpup(p);
dprintk("NFS: received %u auth flavors\n", entries);
if (entries > NFS_MAX_SECFLAVORS)
entries = NFS_MAX_SECFLAVORS;
- p = xdr_inline_decode(xdr, sizeof(u32) * entries);
+ p = xdr_inline_decode(xdr, 4 * entries);
if (unlikely(p == NULL))
return -EIO;
@@ -437,7 +432,7 @@ static int decode_auth_flavors(struct xdr_stream *xdr, struct mountres *res)
entries = *count;
for (i = 0; i < entries; i++) {
- flavors[i] = ntohl(*p++);
+ flavors[i] = be32_to_cpup(p++);
dprintk("NFS: auth flavor[%u]: %d\n", i, flavors[i]);
}
*count = i;
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 27/31] NFS: Remove unused UMNT response data structure
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (25 preceding siblings ...)
2010-12-14 14:58 ` [PATCH 26/31] NFS: Avoid return code checking in mount " Chuck Lever
@ 2010-12-14 14:58 ` Chuck Lever
2010-12-14 14:58 ` [PATCH 28/31] SUNRPC: Avoid return code checking in rpcbind XDR encoder functions Chuck Lever
` (4 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:58 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
The UMNT request has a NULL response. There's no need to set up a
mountres structure for it.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
fs/nfs/mount_clnt.c | 2 --
1 files changed, 0 insertions(+), 2 deletions(-)
diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index c82547e..97c3ec7 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -236,10 +236,8 @@ void nfs_umount(const struct nfs_mount_request *info)
.authflavor = RPC_AUTH_UNIX,
.flags = RPC_CLNT_CREATE_NOPING,
};
- struct mountres result;
struct rpc_message msg = {
.rpc_argp = info->dirpath,
- .rpc_resp = &result,
};
struct rpc_clnt *clnt;
int status;
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 28/31] SUNRPC: Avoid return code checking in rpcbind XDR encoder functions
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (26 preceding siblings ...)
2010-12-14 14:58 ` [PATCH 27/31] NFS: Remove unused UMNT response data structure Chuck Lever
@ 2010-12-14 14:58 ` Chuck Lever
2010-12-14 14:59 ` [PATCH 29/31] SUNRPC: Determine value of "nrprocs" automatically Chuck Lever
` (3 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:58 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
The trend in the other XDR encoder functions is to BUG() when encoding
problems occur, since a problem here is always due to a local coding
error. Then, instead of a status, zero is unconditionally returned.
Update the rpcbind XDR encoders to behave this way.
To finish the update, use the new-style be32_to_cpup() and
cpu_to_be32() macros, and compute the buffer sizes using raw integers
instead of sizeof(). This matches the conventions used in other XDR
functions.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
net/sunrpc/rpcb_clnt.c | 60 +++++++++++++++++-------------------------------
1 files changed, 21 insertions(+), 39 deletions(-)
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index fa6d7ca..d2a2ea0 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -705,14 +705,11 @@ static int rpcb_enc_mapping(struct rpc_rqst *req, __be32 *p,
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- p = xdr_reserve_space(&xdr, sizeof(__be32) * RPCB_mappingargs_sz);
- if (unlikely(p == NULL))
- return -EIO;
-
- *p++ = htonl(rpcb->r_prog);
- *p++ = htonl(rpcb->r_vers);
- *p++ = htonl(rpcb->r_prot);
- *p = htonl(rpcb->r_port);
+ p = xdr_reserve_space(&xdr, RPCB_mappingargs_sz << 2);
+ *p++ = cpu_to_be32(rpcb->r_prog);
+ *p++ = cpu_to_be32(rpcb->r_vers);
+ *p++ = cpu_to_be32(rpcb->r_prot);
+ *p = cpu_to_be32(rpcb->r_port);
return 0;
}
@@ -728,11 +725,11 @@ static int rpcb_dec_getport(struct rpc_rqst *req, __be32 *p,
rpcb->r_port = 0;
- p = xdr_inline_decode(&xdr, sizeof(__be32));
+ p = xdr_inline_decode(&xdr, 4);
if (unlikely(p == NULL))
return -EIO;
- port = ntohl(*p);
+ port = be32_to_cpup(p);
dprintk("RPC: %5u PMAP_%s result: %lu\n", task->tk_pid,
task->tk_msg.rpc_proc->p_name, port);
if (unlikely(port > USHRT_MAX))
@@ -750,7 +747,7 @@ static int rpcb_dec_set(struct rpc_rqst *req, __be32 *p,
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- p = xdr_inline_decode(&xdr, sizeof(__be32));
+ p = xdr_inline_decode(&xdr, 4);
if (unlikely(p == NULL))
return -EIO;
@@ -764,24 +761,16 @@ static int rpcb_dec_set(struct rpc_rqst *req, __be32 *p,
return 0;
}
-static int encode_rpcb_string(struct xdr_stream *xdr, const char *string,
- const u32 maxstrlen)
+static void encode_rpcb_string(struct xdr_stream *xdr, const char *string,
+ const u32 maxstrlen)
{
- u32 len;
__be32 *p;
+ u32 len;
- if (unlikely(string == NULL))
- return -EIO;
len = strlen(string);
- if (unlikely(len > maxstrlen))
- return -EIO;
-
- p = xdr_reserve_space(xdr, sizeof(__be32) + len);
- if (unlikely(p == NULL))
- return -EIO;
+ BUG_ON(len > maxstrlen);
+ p = xdr_reserve_space(xdr, 4 + len);
xdr_encode_opaque(p, string, len);
-
- return 0;
}
static int rpcb_enc_getaddr(struct rpc_rqst *req, __be32 *p,
@@ -797,20 +786,13 @@ static int rpcb_enc_getaddr(struct rpc_rqst *req, __be32 *p,
xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- p = xdr_reserve_space(&xdr,
- sizeof(__be32) * (RPCB_program_sz + RPCB_version_sz));
- if (unlikely(p == NULL))
- return -EIO;
- *p++ = htonl(rpcb->r_prog);
- *p = htonl(rpcb->r_vers);
-
- if (encode_rpcb_string(&xdr, rpcb->r_netid, RPCBIND_MAXNETIDLEN))
- return -EIO;
- if (encode_rpcb_string(&xdr, rpcb->r_addr, RPCBIND_MAXUADDRLEN))
- return -EIO;
- if (encode_rpcb_string(&xdr, rpcb->r_owner, RPCB_MAXOWNERLEN))
- return -EIO;
+ p = xdr_reserve_space(&xdr, (RPCB_program_sz + RPCB_version_sz) << 2);
+ *p++ = cpu_to_be32(rpcb->r_prog);
+ *p = cpu_to_be32(rpcb->r_vers);
+ encode_rpcb_string(&xdr, rpcb->r_netid, RPCBIND_MAXNETIDLEN);
+ encode_rpcb_string(&xdr, rpcb->r_addr, RPCBIND_MAXUADDRLEN);
+ encode_rpcb_string(&xdr, rpcb->r_owner, RPCB_MAXOWNERLEN);
return 0;
}
@@ -827,10 +809,10 @@ static int rpcb_dec_getaddr(struct rpc_rqst *req, __be32 *p,
xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- p = xdr_inline_decode(&xdr, sizeof(__be32));
+ p = xdr_inline_decode(&xdr, 4);
if (unlikely(p == NULL))
goto out_fail;
- len = ntohl(*p);
+ len = be32_to_cpup(p);
/*
* If the returned universal address is a null string,
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 29/31] SUNRPC: Determine value of "nrprocs" automatically
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (27 preceding siblings ...)
2010-12-14 14:58 ` [PATCH 28/31] SUNRPC: Avoid return code checking in rpcbind XDR encoder functions Chuck Lever
@ 2010-12-14 14:59 ` Chuck Lever
2010-12-14 14:59 ` [PATCH 30/31] SUNRPC: New xdr_streams XDR encoder API Chuck Lever
` (2 subsequent siblings)
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:59 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Clean up.
Just fixed a panic where the nrprocs field in a different upper layer
client was set by hand incorrectly. Use the compiler-generated method
used by the other upper layer protocols.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
net/sunrpc/rpcb_clnt.c | 10 +++-------
1 files changed, 3 insertions(+), 7 deletions(-)
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index d2a2ea0..43838c7 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -57,10 +57,6 @@ enum {
RPCBPROC_GETSTAT,
};
-#define RPCB_HIGHPROC_2 RPCBPROC_CALLIT
-#define RPCB_HIGHPROC_3 RPCBPROC_TADDR2UADDR
-#define RPCB_HIGHPROC_4 RPCBPROC_GETSTAT
-
/*
* r_owner
*
@@ -975,19 +971,19 @@ static struct rpcb_info rpcb_next_version6[] = {
static struct rpc_version rpcb_version2 = {
.number = RPCBVERS_2,
- .nrprocs = RPCB_HIGHPROC_2,
+ .nrprocs = ARRAY_SIZE(rpcb_procedures2),
.procs = rpcb_procedures2
};
static struct rpc_version rpcb_version3 = {
.number = RPCBVERS_3,
- .nrprocs = RPCB_HIGHPROC_3,
+ .nrprocs = ARRAY_SIZE(rpcb_procedures3),
.procs = rpcb_procedures3
};
static struct rpc_version rpcb_version4 = {
.number = RPCBVERS_4,
- .nrprocs = RPCB_HIGHPROC_4,
+ .nrprocs = ARRAY_SIZE(rpcb_procedures4),
.procs = rpcb_procedures4
};
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 30/31] SUNRPC: New xdr_streams XDR encoder API
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (28 preceding siblings ...)
2010-12-14 14:59 ` [PATCH 29/31] SUNRPC: Determine value of "nrprocs" automatically Chuck Lever
@ 2010-12-14 14:59 ` Chuck Lever
2010-12-14 14:59 ` [PATCH 31/31] SUNRPC: New xdr_streams XDR decoder API Chuck Lever
2010-12-16 19:14 ` [PATCH 00/31] NFS XDR clean up for 2.6.38 Steve Dickson
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:59 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Now that all client-side XDR encoder routines use xdr_streams, there
should be no need to support the legacy calling sequence [rpc_rqst *,
__be32 *, RPC arg *] anywhere. We can construct an xdr_stream in the
generic RPC code, instead of in each encoder function.
Also, all the client-side encoder functions return 0 now, making a
return value superfluous. Take this opportunity to convert them to
return void instead.
This is a refactoring change. It should not cause different behavior.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/lockd/clnt4xdr.c | 92 ++----
fs/lockd/clntxdr.c | 92 ++----
fs/lockd/mon.c | 26 +-
fs/nfs/mount_clnt.c | 18 -
fs/nfs/nfs2xdr.c | 147 +++------
fs/nfs/nfs3xdr.c | 241 ++++++---------
fs/nfs/nfs4xdr.c | 663 ++++++++++++++++++----------------------
fs/nfsd/nfs4callback.c | 22 -
include/linux/sunrpc/auth.h | 4
include/linux/sunrpc/clnt.h | 2
include/linux/sunrpc/xdr.h | 9 -
net/sunrpc/auth.c | 14 +
net/sunrpc/auth_gss/auth_gss.c | 31 +-
net/sunrpc/clnt.c | 5
net/sunrpc/rpcb_clnt.c | 47 +--
15 files changed, 606 insertions(+), 807 deletions(-)
diff --git a/fs/lockd/clnt4xdr.c b/fs/lockd/clnt4xdr.c
index 1a1c3e2..974f1d9 100644
--- a/fs/lockd/clnt4xdr.c
+++ b/fs/lockd/clnt4xdr.c
@@ -385,17 +385,15 @@ static void encode_nlm4_lock(struct xdr_stream *xdr,
* struct nlm4_lock alock;
* };
*/
-static int nlm4_xdr_enc_testargs(struct rpc_rqst *req, __be32 *p,
- const struct nlm_args *args)
+static void nlm4_xdr_enc_testargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nlm_args *args)
{
const struct nlm_lock *lock = &args->lock;
- struct xdr_stream xdr;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cookie(&xdr, &args->cookie);
- encode_bool(&xdr, lock->fl.fl_type == F_WRLCK);
- encode_nlm4_lock(&xdr, lock);
- return 0;
+ encode_cookie(xdr, &args->cookie);
+ encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
+ encode_nlm4_lock(xdr, lock);
}
/*
@@ -408,20 +406,18 @@ static int nlm4_xdr_enc_testargs(struct rpc_rqst *req, __be32 *p,
* int state;
* };
*/
-static int nlm4_xdr_enc_lockargs(struct rpc_rqst *req, __be32 *p,
- const struct nlm_args *args)
+static void nlm4_xdr_enc_lockargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nlm_args *args)
{
const struct nlm_lock *lock = &args->lock;
- struct xdr_stream xdr;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cookie(&xdr, &args->cookie);
- encode_bool(&xdr, args->block);
- encode_bool(&xdr, lock->fl.fl_type == F_WRLCK);
- encode_nlm4_lock(&xdr, lock);
- encode_bool(&xdr, args->reclaim);
- encode_int32(&xdr, args->state);
- return 0;
+ encode_cookie(xdr, &args->cookie);
+ encode_bool(xdr, args->block);
+ encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
+ encode_nlm4_lock(xdr, lock);
+ encode_bool(xdr, args->reclaim);
+ encode_int32(xdr, args->state);
}
/*
@@ -432,18 +428,16 @@ static int nlm4_xdr_enc_lockargs(struct rpc_rqst *req, __be32 *p,
* struct nlm4_lock alock;
* };
*/
-static int nlm4_xdr_enc_cancargs(struct rpc_rqst *req, __be32 *p,
- const struct nlm_args *args)
+static void nlm4_xdr_enc_cancargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nlm_args *args)
{
const struct nlm_lock *lock = &args->lock;
- struct xdr_stream xdr;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cookie(&xdr, &args->cookie);
- encode_bool(&xdr, args->block);
- encode_bool(&xdr, lock->fl.fl_type == F_WRLCK);
- encode_nlm4_lock(&xdr, lock);
- return 0;
+ encode_cookie(xdr, &args->cookie);
+ encode_bool(xdr, args->block);
+ encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
+ encode_nlm4_lock(xdr, lock);
}
/*
@@ -452,16 +446,14 @@ static int nlm4_xdr_enc_cancargs(struct rpc_rqst *req, __be32 *p,
* struct nlm4_lock alock;
* };
*/
-static int nlm4_xdr_enc_unlockargs(struct rpc_rqst *req, __be32 *p,
- const struct nlm_args *args)
+static void nlm4_xdr_enc_unlockargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nlm_args *args)
{
const struct nlm_lock *lock = &args->lock;
- struct xdr_stream xdr;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cookie(&xdr, &args->cookie);
- encode_nlm4_lock(&xdr, lock);
- return 0;
+ encode_cookie(xdr, &args->cookie);
+ encode_nlm4_lock(xdr, lock);
}
/*
@@ -470,15 +462,12 @@ static int nlm4_xdr_enc_unlockargs(struct rpc_rqst *req, __be32 *p,
* nlm4_stat stat;
* };
*/
-static int nlm4_xdr_enc_res(struct rpc_rqst *req, __be32 *p,
- const struct nlm_res *result)
+static void nlm4_xdr_enc_res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nlm_res *result)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cookie(&xdr, &result->cookie);
- encode_nlm4_stat(&xdr, result->status);
- return 0;
+ encode_cookie(xdr, &result->cookie);
+ encode_nlm4_stat(xdr, result->status);
}
/*
@@ -494,17 +483,14 @@ static int nlm4_xdr_enc_res(struct rpc_rqst *req, __be32 *p,
* nlm4_testrply test_stat;
* };
*/
-static int nlm4_xdr_enc_testres(struct rpc_rqst *req, __be32 *p,
- const struct nlm_res *result)
+static void nlm4_xdr_enc_testres(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nlm_res *result)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cookie(&xdr, &result->cookie);
- encode_nlm4_stat(&xdr, result->status);
+ encode_cookie(xdr, &result->cookie);
+ encode_nlm4_stat(xdr, result->status);
if (result->status == nlm_lck_denied)
- encode_nlm4_holder(&xdr, result);
- return 0;
+ encode_nlm4_holder(xdr, result);
}
@@ -588,7 +574,7 @@ out:
#define PROC(proc, argtype, restype) \
[NLMPROC_##proc] = { \
.p_proc = NLMPROC_##proc, \
- .p_encode = (kxdrproc_t)nlm4_xdr_enc_##argtype, \
+ .p_encode = (kxdreproc_t)nlm4_xdr_enc_##argtype, \
.p_decode = (kxdrproc_t)nlm4_xdr_dec_##restype, \
.p_arglen = NLM4_##argtype##_sz, \
.p_replen = NLM4_##restype##_sz, \
diff --git a/fs/lockd/clntxdr.c b/fs/lockd/clntxdr.c
index 0472f2a..c6fda8f 100644
--- a/fs/lockd/clntxdr.c
+++ b/fs/lockd/clntxdr.c
@@ -378,17 +378,15 @@ static void encode_nlm_lock(struct xdr_stream *xdr,
* struct nlm_lock alock;
* };
*/
-static int nlm_xdr_enc_testargs(struct rpc_rqst *req, __be32 *p,
- const struct nlm_args *args)
+static void nlm_xdr_enc_testargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nlm_args *args)
{
const struct nlm_lock *lock = &args->lock;
- struct xdr_stream xdr;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cookie(&xdr, &args->cookie);
- encode_bool(&xdr, lock->fl.fl_type == F_WRLCK);
- encode_nlm_lock(&xdr, lock);
- return 0;
+ encode_cookie(xdr, &args->cookie);
+ encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
+ encode_nlm_lock(xdr, lock);
}
/*
@@ -401,20 +399,18 @@ static int nlm_xdr_enc_testargs(struct rpc_rqst *req, __be32 *p,
* int state;
* };
*/
-static int nlm_xdr_enc_lockargs(struct rpc_rqst *req, __be32 *p,
- const struct nlm_args *args)
+static void nlm_xdr_enc_lockargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nlm_args *args)
{
const struct nlm_lock *lock = &args->lock;
- struct xdr_stream xdr;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cookie(&xdr, &args->cookie);
- encode_bool(&xdr, args->block);
- encode_bool(&xdr, lock->fl.fl_type == F_WRLCK);
- encode_nlm_lock(&xdr, lock);
- encode_bool(&xdr, args->reclaim);
- encode_int32(&xdr, args->state);
- return 0;
+ encode_cookie(xdr, &args->cookie);
+ encode_bool(xdr, args->block);
+ encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
+ encode_nlm_lock(xdr, lock);
+ encode_bool(xdr, args->reclaim);
+ encode_int32(xdr, args->state);
}
/*
@@ -425,18 +421,16 @@ static int nlm_xdr_enc_lockargs(struct rpc_rqst *req, __be32 *p,
* struct nlm_lock alock;
* };
*/
-static int nlm_xdr_enc_cancargs(struct rpc_rqst *req, __be32 *p,
- const struct nlm_args *args)
+static void nlm_xdr_enc_cancargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nlm_args *args)
{
const struct nlm_lock *lock = &args->lock;
- struct xdr_stream xdr;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cookie(&xdr, &args->cookie);
- encode_bool(&xdr, args->block);
- encode_bool(&xdr, lock->fl.fl_type == F_WRLCK);
- encode_nlm_lock(&xdr, lock);
- return 0;
+ encode_cookie(xdr, &args->cookie);
+ encode_bool(xdr, args->block);
+ encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
+ encode_nlm_lock(xdr, lock);
}
/*
@@ -445,16 +439,14 @@ static int nlm_xdr_enc_cancargs(struct rpc_rqst *req, __be32 *p,
* struct nlm_lock alock;
* };
*/
-static int nlm_xdr_enc_unlockargs(struct rpc_rqst *req, __be32 *p,
- const struct nlm_args *args)
+static void nlm_xdr_enc_unlockargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nlm_args *args)
{
const struct nlm_lock *lock = &args->lock;
- struct xdr_stream xdr;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cookie(&xdr, &args->cookie);
- encode_nlm_lock(&xdr, lock);
- return 0;
+ encode_cookie(xdr, &args->cookie);
+ encode_nlm_lock(xdr, lock);
}
/*
@@ -463,15 +455,12 @@ static int nlm_xdr_enc_unlockargs(struct rpc_rqst *req, __be32 *p,
* nlm_stat stat;
* };
*/
-static int nlm_xdr_enc_res(struct rpc_rqst *req, __be32 *p,
- const struct nlm_res *result)
+static void nlm_xdr_enc_res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nlm_res *result)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cookie(&xdr, &result->cookie);
- encode_nlm_stat(&xdr, result->status);
- return 0;
+ encode_cookie(xdr, &result->cookie);
+ encode_nlm_stat(xdr, result->status);
}
/*
@@ -494,16 +483,13 @@ static void encode_nlm_testrply(struct xdr_stream *xdr,
encode_nlm_holder(xdr, result);
}
-static int nlm_xdr_enc_testres(struct rpc_rqst *req, __be32 *p,
- const struct nlm_res *result)
+static void nlm_xdr_enc_testres(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nlm_res *result)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cookie(&xdr, &result->cookie);
- encode_nlm_stat(&xdr, result->status);
- encode_nlm_testrply(&xdr, result);
- return 0;
+ encode_cookie(xdr, &result->cookie);
+ encode_nlm_stat(xdr, result->status);
+ encode_nlm_testrply(xdr, result);
}
@@ -586,7 +572,7 @@ out:
#define PROC(proc, argtype, restype) \
[NLMPROC_##proc] = { \
.p_proc = NLMPROC_##proc, \
- .p_encode = (kxdrproc_t)nlm_xdr_enc_##argtype, \
+ .p_encode = (kxdreproc_t)nlm_xdr_enc_##argtype, \
.p_decode = (kxdrproc_t)nlm_xdr_dec_##restype, \
.p_arglen = NLM_##argtype##_sz, \
.p_replen = NLM_##restype##_sz, \
diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c
index d812818..baa77bc 100644
--- a/fs/lockd/mon.c
+++ b/fs/lockd/mon.c
@@ -459,25 +459,17 @@ static void encode_priv(struct xdr_stream *xdr, const struct nsm_args *argp)
xdr_encode_opaque_fixed(p, argp->priv->data, SM_PRIV_SIZE);
}
-static int xdr_enc_mon(struct rpc_rqst *req, __be32 *p,
- const struct nsm_args *argp)
+static void nsm_xdr_enc_mon(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nsm_args *argp)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_mon_id(&xdr, argp);
- encode_priv(&xdr, argp);
- return 0;
+ encode_mon_id(xdr, argp);
+ encode_priv(xdr, argp);
}
-static int xdr_enc_unmon(struct rpc_rqst *req, __be32 *p,
- const struct nsm_args *argp)
+static void nsm_xdr_enc_unmon(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nsm_args *argp)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_mon_id(&xdr, argp);
- return 0;
+ encode_mon_id(xdr, argp);
}
static int xdr_dec_stat_res(struct rpc_rqst *rqstp, __be32 *p,
@@ -524,7 +516,7 @@ static int xdr_dec_stat(struct rpc_rqst *rqstp, __be32 *p,
static struct rpc_procinfo nsm_procedures[] = {
[NSMPROC_MON] = {
.p_proc = NSMPROC_MON,
- .p_encode = (kxdrproc_t)xdr_enc_mon,
+ .p_encode = (kxdreproc_t)nsm_xdr_enc_mon,
.p_decode = (kxdrproc_t)xdr_dec_stat_res,
.p_arglen = SM_mon_sz,
.p_replen = SM_monres_sz,
@@ -533,7 +525,7 @@ static struct rpc_procinfo nsm_procedures[] = {
},
[NSMPROC_UNMON] = {
.p_proc = NSMPROC_UNMON,
- .p_encode = (kxdrproc_t)xdr_enc_unmon,
+ .p_encode = (kxdreproc_t)nsm_xdr_enc_unmon,
.p_decode = (kxdrproc_t)xdr_dec_stat,
.p_arglen = SM_mon_id_sz,
.p_replen = SM_unmonres_sz,
diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index 97c3ec7..979ebd7 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -288,14 +288,10 @@ static void encode_mntdirpath(struct xdr_stream *xdr, const char *pathname)
xdr_encode_opaque(p, pathname, pathname_len);
}
-static int mnt_enc_dirpath(struct rpc_rqst *req, __be32 *p,
- const char *dirpath)
+static void mnt_xdr_enc_dirpath(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const char *dirpath)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_mntdirpath(&xdr, dirpath);
- return 0;
+ encode_mntdirpath(xdr, dirpath);
}
/*
@@ -460,7 +456,7 @@ static int mnt_dec_mountres3(struct rpc_rqst *req, __be32 *p,
static struct rpc_procinfo mnt_procedures[] = {
[MOUNTPROC_MNT] = {
.p_proc = MOUNTPROC_MNT,
- .p_encode = (kxdrproc_t)mnt_enc_dirpath,
+ .p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath,
.p_decode = (kxdrproc_t)mnt_dec_mountres,
.p_arglen = MNT_enc_dirpath_sz,
.p_replen = MNT_dec_mountres_sz,
@@ -469,7 +465,7 @@ static struct rpc_procinfo mnt_procedures[] = {
},
[MOUNTPROC_UMNT] = {
.p_proc = MOUNTPROC_UMNT,
- .p_encode = (kxdrproc_t)mnt_enc_dirpath,
+ .p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath,
.p_arglen = MNT_enc_dirpath_sz,
.p_statidx = MOUNTPROC_UMNT,
.p_name = "UMOUNT",
@@ -479,7 +475,7 @@ static struct rpc_procinfo mnt_procedures[] = {
static struct rpc_procinfo mnt3_procedures[] = {
[MOUNTPROC3_MNT] = {
.p_proc = MOUNTPROC3_MNT,
- .p_encode = (kxdrproc_t)mnt_enc_dirpath,
+ .p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath,
.p_decode = (kxdrproc_t)mnt_dec_mountres3,
.p_arglen = MNT_enc_dirpath_sz,
.p_replen = MNT_dec_mountres3_sz,
@@ -488,7 +484,7 @@ static struct rpc_procinfo mnt3_procedures[] = {
},
[MOUNTPROC3_UMNT] = {
.p_proc = MOUNTPROC3_UMNT,
- .p_encode = (kxdrproc_t)mnt_enc_dirpath,
+ .p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath,
.p_arglen = MNT_enc_dirpath_sz,
.p_statidx = MOUNTPROC3_UMNT,
.p_name = "UMOUNT",
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index a9b848e..8f3acbe 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -558,14 +558,11 @@ out_default:
* "NFS: Network File System Protocol Specification".
*/
-static int nfs2_xdr_enc_fhandle(struct rpc_rqst *req, __be32 *p,
- const struct nfs_fh *fh)
+static void nfs2_xdr_enc_fhandle(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_fh *fh)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_fhandle(&xdr, fh);
- return 0;
+ encode_fhandle(xdr, fh);
}
/*
@@ -576,37 +573,28 @@ static int nfs2_xdr_enc_fhandle(struct rpc_rqst *req, __be32 *p,
* sattr attributes;
* };
*/
-static int nfs2_xdr_enc_sattrargs(struct rpc_rqst *req, __be32 *p,
- const struct nfs_sattrargs *args)
+static void nfs2_xdr_enc_sattrargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_sattrargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_fhandle(&xdr, args->fh);
- encode_sattr(&xdr, args->sattr);
- return 0;
+ encode_fhandle(xdr, args->fh);
+ encode_sattr(xdr, args->sattr);
}
-static int nfs2_xdr_enc_diropargs(struct rpc_rqst *req, __be32 *p,
- const struct nfs_diropargs *args)
+static void nfs2_xdr_enc_diropargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_diropargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs(&xdr, args->fh, args->name, args->len);
- return 0;
+ encode_diropargs(xdr, args->fh, args->name, args->len);
}
-static int nfs2_xdr_enc_readlinkargs(struct rpc_rqst *req, __be32 *p,
- const struct nfs_readlinkargs *args)
+static void nfs2_xdr_enc_readlinkargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_readlinkargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_fhandle(&xdr, args->fh);
+ encode_fhandle(xdr, args->fh);
prepare_reply_buffer(req, args->pages, args->pgbase,
args->pglen, NFS_readlinkres_sz);
- return 0;
}
/*
@@ -634,17 +622,14 @@ static void encode_readargs(struct xdr_stream *xdr,
*p = cpu_to_be32(count);
}
-static int nfs2_xdr_enc_readargs(struct rpc_rqst *req, __be32 *p,
- const struct nfs_readargs *args)
+static void nfs2_xdr_enc_readargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_readargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_readargs(&xdr, args);
+ encode_readargs(xdr, args);
prepare_reply_buffer(req, args->pages, args->pgbase,
args->count, NFS_readres_sz);
req->rq_rcv_buf.flags |= XDRBUF_READ;
- return 0;
}
/*
@@ -677,15 +662,12 @@ static void encode_writeargs(struct xdr_stream *xdr,
xdr_write_pages(xdr, args->pages, args->pgbase, count);
}
-static int nfs2_xdr_enc_writeargs(struct rpc_rqst *req, __be32 *p,
- const struct nfs_writeargs *args)
+static void nfs2_xdr_enc_writeargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_writeargs(&xdr, args);
- xdr.buf->flags |= XDRBUF_WRITE;
- return 0;
+ encode_writeargs(xdr, args);
+ xdr->buf->flags |= XDRBUF_WRITE;
}
/*
@@ -696,25 +678,19 @@ static int nfs2_xdr_enc_writeargs(struct rpc_rqst *req, __be32 *p,
* sattr attributes;
* };
*/
-static int nfs2_xdr_enc_createargs(struct rpc_rqst *req, __be32 *p,
- const struct nfs_createargs *args)
+static void nfs2_xdr_enc_createargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_createargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs(&xdr, args->fh, args->name, args->len);
- encode_sattr(&xdr, args->sattr);
- return 0;
+ encode_diropargs(xdr, args->fh, args->name, args->len);
+ encode_sattr(xdr, args->sattr);
}
-static int nfs2_xdr_enc_removeargs(struct rpc_rqst *req, __be32 *p,
- const struct nfs_removeargs *args)
+static void nfs2_xdr_enc_removeargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_removeargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs(&xdr, args->fh, args->name.name, args->name.len);
- return 0;
+ encode_diropargs(xdr, args->fh, args->name.name, args->name.len);
}
/*
@@ -725,17 +701,15 @@ static int nfs2_xdr_enc_removeargs(struct rpc_rqst *req, __be32 *p,
* diropargs to;
* };
*/
-static int nfs2_xdr_enc_renameargs(struct rpc_rqst *req, __be32 *p,
- const struct nfs_renameargs *args)
+static void nfs2_xdr_enc_renameargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_renameargs *args)
{
const struct qstr *old = args->old_name;
const struct qstr *new = args->new_name;
- struct xdr_stream xdr;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs(&xdr, args->old_dir, old->name, old->len);
- encode_diropargs(&xdr, args->new_dir, new->name, new->len);
- return 0;
+ encode_diropargs(xdr, args->old_dir, old->name, old->len);
+ encode_diropargs(xdr, args->new_dir, new->name, new->len);
}
/*
@@ -746,15 +720,12 @@ static int nfs2_xdr_enc_renameargs(struct rpc_rqst *req, __be32 *p,
* diropargs to;
* };
*/
-static int nfs2_xdr_enc_linkargs(struct rpc_rqst *req, __be32 *p,
- const struct nfs_linkargs *args)
+static void nfs2_xdr_enc_linkargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_linkargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_fhandle(&xdr, args->fromfh);
- encode_diropargs(&xdr, args->tofh, args->toname, args->tolen);
- return 0;
+ encode_fhandle(xdr, args->fromfh);
+ encode_diropargs(xdr, args->tofh, args->toname, args->tolen);
}
/*
@@ -766,16 +737,13 @@ static int nfs2_xdr_enc_linkargs(struct rpc_rqst *req, __be32 *p,
* sattr attributes;
* };
*/
-static int nfs2_xdr_enc_symlinkargs(struct rpc_rqst *req, __be32 *p,
- const struct nfs_symlinkargs *args)
+static void nfs2_xdr_enc_symlinkargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_symlinkargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs(&xdr, args->fromfh, args->fromname, args->fromlen);
- encode_path(&xdr, args->pages, args->pathlen);
- encode_sattr(&xdr, args->sattr);
- return 0;
+ encode_diropargs(xdr, args->fromfh, args->fromname, args->fromlen);
+ encode_path(xdr, args->pages, args->pathlen);
+ encode_sattr(xdr, args->sattr);
}
/*
@@ -799,16 +767,13 @@ static void encode_readdirargs(struct xdr_stream *xdr,
*p = cpu_to_be32(args->count);
}
-static int nfs2_xdr_enc_readdirargs(struct rpc_rqst *req, __be32 *p,
- const struct nfs_readdirargs *args)
+static void nfs2_xdr_enc_readdirargs(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_readdirargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_readdirargs(&xdr, args);
+ encode_readdirargs(xdr, args);
prepare_reply_buffer(req, args->pages, 0,
args->count, NFS_readdirres_sz);
- return 0;
}
/*
@@ -1184,7 +1149,7 @@ int nfs_stat_to_errno(enum nfs_stat status)
#define PROC(proc, argtype, restype, timer) \
[NFSPROC_##proc] = { \
.p_proc = NFSPROC_##proc, \
- .p_encode = (kxdrproc_t)nfs2_xdr_enc_##argtype, \
+ .p_encode = (kxdreproc_t)nfs2_xdr_enc_##argtype, \
.p_decode = (kxdrproc_t)nfs2_xdr_dec_##restype, \
.p_arglen = NFS_##argtype##_sz, \
.p_replen = NFS_##restype##_sz, \
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index 15c93cc..ae1b1a43 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -835,14 +835,11 @@ static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh,
* nfs_fh3 object;
* };
*/
-static int nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs_fh *fh)
+static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_fh *fh)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_nfs_fh3(&xdr, fh);
- return 0;
+ encode_nfs_fh3(xdr, fh);
}
/*
@@ -876,16 +873,13 @@ static void encode_sattrguard3(struct xdr_stream *xdr,
}
}
-static int nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_sattrargs *args)
+static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_sattrargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_nfs_fh3(&xdr, args->fh);
- encode_sattr3(&xdr, args->sattr);
- encode_sattrguard3(&xdr, args);
- return 0;
+ encode_nfs_fh3(xdr, args->fh);
+ encode_sattr3(xdr, args->sattr);
+ encode_sattrguard3(xdr, args);
}
/*
@@ -895,14 +889,11 @@ static int nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, __be32 *p,
* diropargs3 what;
* };
*/
-static int nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_diropargs *args)
+static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_diropargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->fh, args->name, args->len);
- return 0;
+ encode_diropargs3(xdr, args->fh, args->name, args->len);
}
/*
@@ -920,14 +911,11 @@ static void encode_access3args(struct xdr_stream *xdr,
encode_uint32(xdr, args->access);
}
-static int nfs3_xdr_enc_access3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_accessargs *args)
+static void nfs3_xdr_enc_access3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_accessargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_access3args(&xdr, args);
- return 0;
+ encode_access3args(xdr, args);
}
/*
@@ -937,16 +925,13 @@ static int nfs3_xdr_enc_access3args(struct rpc_rqst *req, __be32 *p,
* nfs_fh3 symlink;
* };
*/
-static int nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_readlinkargs *args)
+static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_readlinkargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_nfs_fh3(&xdr, args->fh);
+ encode_nfs_fh3(xdr, args->fh);
prepare_reply_buffer(req, args->pages, args->pgbase,
args->pglen, NFS3_readlinkres_sz);
- return 0;
}
/*
@@ -970,17 +955,14 @@ static void encode_read3args(struct xdr_stream *xdr,
*p = cpu_to_be32(args->count);
}
-static int nfs3_xdr_enc_read3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs_readargs *args)
+static void nfs3_xdr_enc_read3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_readargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_read3args(&xdr, args);
+ encode_read3args(xdr, args);
prepare_reply_buffer(req, args->pages, args->pgbase,
args->count, NFS3_readres_sz);
req->rq_rcv_buf.flags |= XDRBUF_READ;
- return 0;
}
/*
@@ -1015,15 +997,12 @@ static void encode_write3args(struct xdr_stream *xdr,
xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
}
-static int nfs3_xdr_enc_write3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs_writeargs *args)
+static void nfs3_xdr_enc_write3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_write3args(&xdr, args);
- xdr.buf->flags |= XDRBUF_WRITE;
- return 0;
+ encode_write3args(xdr, args);
+ xdr->buf->flags |= XDRBUF_WRITE;
}
/*
@@ -1065,15 +1044,12 @@ static void encode_createhow3(struct xdr_stream *xdr,
}
}
-static int nfs3_xdr_enc_create3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_createargs *args)
+static void nfs3_xdr_enc_create3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_createargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->fh, args->name, args->len);
- encode_createhow3(&xdr, args);
- return 0;
+ encode_diropargs3(xdr, args->fh, args->name, args->len);
+ encode_createhow3(xdr, args);
}
/*
@@ -1084,15 +1060,12 @@ static int nfs3_xdr_enc_create3args(struct rpc_rqst *req, __be32 *p,
* sattr3 attributes;
* };
*/
-static int nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_mkdirargs *args)
+static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_mkdirargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->fh, args->name, args->len);
- encode_sattr3(&xdr, args->sattr);
- return 0;
+ encode_diropargs3(xdr, args->fh, args->name, args->len);
+ encode_sattr3(xdr, args->sattr);
}
/*
@@ -1115,15 +1088,12 @@ static void encode_symlinkdata3(struct xdr_stream *xdr,
encode_nfspath3(xdr, args->pages, args->pathlen);
}
-static int nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_symlinkargs *args)
+static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_symlinkargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->fromfh, args->fromname, args->fromlen);
- encode_symlinkdata3(&xdr, args);
- return 0;
+ encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen);
+ encode_symlinkdata3(xdr, args);
}
/*
@@ -1178,15 +1148,12 @@ static void encode_mknoddata3(struct xdr_stream *xdr,
}
}
-static int nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_mknodargs *args)
+static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_mknodargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->fh, args->name, args->len);
- encode_mknoddata3(&xdr, args);
- return 0;
+ encode_diropargs3(xdr, args->fh, args->name, args->len);
+ encode_mknoddata3(xdr, args);
}
/*
@@ -1196,14 +1163,11 @@ static int nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, __be32 *p,
* diropargs3 object;
* };
*/
-static int nfs3_xdr_enc_remove3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs_removeargs *args)
+static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_removeargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->fh, args->name.name, args->name.len);
- return 0;
+ encode_diropargs3(xdr, args->fh, args->name.name, args->name.len);
}
/*
@@ -1214,17 +1178,15 @@ static int nfs3_xdr_enc_remove3args(struct rpc_rqst *req, __be32 *p,
* diropargs3 to;
* };
*/
-static int nfs3_xdr_enc_rename3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs_renameargs *args)
+static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_renameargs *args)
{
const struct qstr *old = args->old_name;
const struct qstr *new = args->new_name;
- struct xdr_stream xdr;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_diropargs3(&xdr, args->old_dir, old->name, old->len);
- encode_diropargs3(&xdr, args->new_dir, new->name, new->len);
- return 0;
+ encode_diropargs3(xdr, args->old_dir, old->name, old->len);
+ encode_diropargs3(xdr, args->new_dir, new->name, new->len);
}
/*
@@ -1235,15 +1197,12 @@ static int nfs3_xdr_enc_rename3args(struct rpc_rqst *req, __be32 *p,
* diropargs3 link;
* };
*/
-static int nfs3_xdr_enc_link3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_linkargs *args)
+static void nfs3_xdr_enc_link3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_linkargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_nfs_fh3(&xdr, args->fromfh);
- encode_diropargs3(&xdr, args->tofh, args->toname, args->tolen);
- return 0;
+ encode_nfs_fh3(xdr, args->fromfh);
+ encode_diropargs3(xdr, args->tofh, args->toname, args->tolen);
}
/*
@@ -1269,16 +1228,13 @@ static void encode_readdir3args(struct xdr_stream *xdr,
*p = cpu_to_be32(args->count);
}
-static int nfs3_xdr_enc_readdir3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_readdirargs *args)
+static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_readdirargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_readdir3args(&xdr, args);
+ encode_readdir3args(xdr, args);
prepare_reply_buffer(req, args->pages, 0,
args->count, NFS3_readdirres_sz);
- return 0;
}
/*
@@ -1312,16 +1268,13 @@ static void encode_readdirplus3args(struct xdr_stream *xdr,
*p = cpu_to_be32(args->count);
}
-static int nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_readdirargs *args)
+static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_readdirargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_readdirplus3args(&xdr, args);
+ encode_readdirplus3args(xdr, args);
prepare_reply_buffer(req, args->pages, 0,
args->count, NFS3_readdirres_sz);
- return 0;
}
/*
@@ -1345,57 +1298,49 @@ static void encode_commit3args(struct xdr_stream *xdr,
*p = cpu_to_be32(args->count);
}
-static int nfs3_xdr_enc_commit3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs_writeargs *args)
+static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs_writeargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_commit3args(&xdr, args);
- return 0;
+ encode_commit3args(xdr, args);
}
#ifdef CONFIG_NFS_V3_ACL
-static int nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_getaclargs *args)
+static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_getaclargs *args)
{
- struct xdr_stream xdr;
-
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_nfs_fh3(&xdr, args->fh);
- encode_uint32(&xdr, args->mask);
+ encode_nfs_fh3(xdr, args->fh);
+ encode_uint32(xdr, args->mask);
if (args->mask & (NFS_ACL | NFS_DFACL))
prepare_reply_buffer(req, args->pages, 0,
NFSACL_MAXPAGES << PAGE_SHIFT,
ACL3_getaclres_sz);
- return 0;
}
-static int nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, __be32 *p,
- const struct nfs3_setaclargs *args)
+static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs3_setaclargs *args)
{
- struct xdr_stream xdr;
unsigned int base;
int error;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_nfs_fh3(&xdr, NFS_FH(args->inode));
- encode_uint32(&xdr, args->mask);
+ encode_nfs_fh3(xdr, NFS_FH(args->inode));
+ encode_uint32(xdr, args->mask);
if (args->npages != 0)
- xdr_write_pages(&xdr, args->pages, 0, args->len);
+ xdr_write_pages(xdr, args->pages, 0, args->len);
base = req->rq_slen;
- error = nfsacl_encode(xdr.buf, base, args->inode,
+ error = nfsacl_encode(xdr->buf, base, args->inode,
(args->mask & NFS_ACL) ?
args->acl_access : NULL, 1, 0);
BUG_ON(error < 0);
- error = nfsacl_encode(xdr.buf, base + error, args->inode,
+ error = nfsacl_encode(xdr->buf, base + error, args->inode,
(args->mask & NFS_DFACL) ?
args->acl_default : NULL, 1,
NFS_ACL_DEFAULT);
BUG_ON(error < 0);
- return 0;
}
#endif /* CONFIG_NFS_V3_ACL */
@@ -2506,7 +2451,7 @@ out_default:
#define PROC(proc, argtype, restype, timer) \
[NFS3PROC_##proc] = { \
.p_proc = NFS3PROC_##proc, \
- .p_encode = (kxdrproc_t)nfs3_xdr_enc_##argtype##3args, \
+ .p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \
.p_decode = (kxdrproc_t)nfs3_xdr_dec_##restype##3res, \
.p_arglen = NFS3_##argtype##args_sz, \
.p_replen = NFS3_##restype##res_sz, \
@@ -2549,7 +2494,7 @@ struct rpc_version nfs_version3 = {
static struct rpc_procinfo nfs3_acl_procedures[] = {
[ACLPROC3_GETACL] = {
.p_proc = ACLPROC3_GETACL,
- .p_encode = (kxdrproc_t)nfs3_xdr_enc_getacl3args,
+ .p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args,
.p_decode = (kxdrproc_t)nfs3_xdr_dec_getacl3res,
.p_arglen = ACL3_getaclargs_sz,
.p_replen = ACL3_getaclres_sz,
@@ -2558,7 +2503,7 @@ static struct rpc_procinfo nfs3_acl_procedures[] = {
},
[ACLPROC3_SETACL] = {
.p_proc = ACLPROC3_SETACL,
- .p_encode = (kxdrproc_t)nfs3_xdr_enc_setacl3args,
+ .p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args,
.p_decode = (kxdrproc_t)nfs3_xdr_dec_setacl3res,
.p_arglen = ACL3_setaclargs_sz,
.p_replen = ACL3_setaclres_sz,
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index a15fe99..6ec38b3 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1510,7 +1510,7 @@ encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
hdr->replen += decode_restorefh_maxsz;
}
-static int
+static void
encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
{
__be32 *p;
@@ -1521,14 +1521,12 @@ encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compoun
p = reserve_space(xdr, 2*4);
*p++ = cpu_to_be32(1);
*p = cpu_to_be32(FATTR4_WORD0_ACL);
- if (arg->acl_len % 4)
- return -EINVAL;
+ BUG_ON(arg->acl_len % 4);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(arg->acl_len);
xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
hdr->nops++;
hdr->replen += decode_setacl_maxsz;
- return 0;
}
static void
@@ -1833,393 +1831,362 @@ static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
/*
* Encode an ACCESS request
*/
-static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
+static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_accessargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_access(&xdr, args->access, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_access(xdr, args->access, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode LOOKUP request
*/
-static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
+static void nfs4_xdr_enc_lookup(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_lookup_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->dir_fh, &hdr);
- encode_lookup(&xdr, args->name, &hdr);
- encode_getfh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->dir_fh, &hdr);
+ encode_lookup(xdr, args->name, &hdr);
+ encode_getfh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode LOOKUP_ROOT request
*/
-static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
+static void nfs4_xdr_enc_lookup_root(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs4_lookup_root_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putrootfh(&xdr, &hdr);
- encode_getfh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putrootfh(xdr, &hdr);
+ encode_getfh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode REMOVE request
*/
-static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
+static void nfs4_xdr_enc_remove(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs_removeargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_remove(&xdr, &args->name, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_remove(xdr, &args->name, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode RENAME request
*/
-static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs_renameargs *args)
+static void nfs4_xdr_enc_rename(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs_renameargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->old_dir, &hdr);
- encode_savefh(&xdr, &hdr);
- encode_putfh(&xdr, args->new_dir, &hdr);
- encode_rename(&xdr, args->old_name, args->new_name, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
- encode_restorefh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->old_dir, &hdr);
+ encode_savefh(xdr, &hdr);
+ encode_putfh(xdr, args->new_dir, &hdr);
+ encode_rename(xdr, args->old_name, args->new_name, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
+ encode_restorefh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode LINK request
*/
-static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
+static void nfs4_xdr_enc_link(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_link_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_savefh(&xdr, &hdr);
- encode_putfh(&xdr, args->dir_fh, &hdr);
- encode_link(&xdr, args->name, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
- encode_restorefh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_savefh(xdr, &hdr);
+ encode_putfh(xdr, args->dir_fh, &hdr);
+ encode_link(xdr, args->name, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
+ encode_restorefh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode CREATE request
*/
-static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
+static void nfs4_xdr_enc_create(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_create_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->dir_fh, &hdr);
- encode_savefh(&xdr, &hdr);
- encode_create(&xdr, args, &hdr);
- encode_getfh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
- encode_restorefh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->dir_fh, &hdr);
+ encode_savefh(xdr, &hdr);
+ encode_create(xdr, args, &hdr);
+ encode_getfh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
+ encode_restorefh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode SYMLINK request
*/
-static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
+static void nfs4_xdr_enc_symlink(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_create_arg *args)
{
- return nfs4_xdr_enc_create(req, p, args);
+ nfs4_xdr_enc_create(req, xdr, args);
}
/*
* Encode GETATTR request
*/
-static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
+static void nfs4_xdr_enc_getattr(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_getattr_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a CLOSE request
*/
-static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
+static void nfs4_xdr_enc_close(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_closeargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_close(&xdr, args, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_close(xdr, args, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode an OPEN request
*/
-static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
+static void nfs4_xdr_enc_open(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_openargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_savefh(&xdr, &hdr);
- encode_open(&xdr, args, &hdr);
- encode_getfh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
- encode_restorefh(&xdr, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_savefh(xdr, &hdr);
+ encode_open(xdr, args, &hdr);
+ encode_getfh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
+ encode_restorefh(xdr, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode an OPEN_CONFIRM request
*/
-static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
+static void nfs4_xdr_enc_open_confirm(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_open_confirmargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 0,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_open_confirm(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_open_confirm(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode an OPEN request with no attributes.
*/
-static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
+static void nfs4_xdr_enc_open_noattr(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_openargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_open(&xdr, args, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_open(xdr, args, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode an OPEN_DOWNGRADE request
*/
-static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
+static void nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_closeargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_open_downgrade(&xdr, args, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_open_downgrade(xdr, args, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a LOCK request
*/
-static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
+static void nfs4_xdr_enc_lock(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_lock_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_lock(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_lock(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a LOCKT request
*/
-static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
+static void nfs4_xdr_enc_lockt(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_lockt_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_lockt(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_lockt(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a LOCKU request
*/
-static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
+static void nfs4_xdr_enc_locku(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_locku_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_locku(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_locku(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
-static int nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, __be32 *p, struct nfs_release_lockowner_args *args)
+static void nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_release_lockowner_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = 0,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_release_lockowner(&xdr, &args->lock_owner, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_release_lockowner(xdr, &args->lock_owner, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a READLINK request
*/
-static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
+static void nfs4_xdr_enc_readlink(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_readlink *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_readlink(&xdr, args, req, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_readlink(xdr, args, req, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
args->pgbase, args->pglen);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a READDIR request
*/
-static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
+static void nfs4_xdr_enc_readdir(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_readdir_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_readdir(&xdr, args, req, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_readdir(xdr, args, req, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
args->pgbase, args->count);
@@ -2227,428 +2194,387 @@ static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nf
__func__, hdr.replen << 2, args->pages,
args->pgbase, args->count);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a READ request
*/
-static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
+static void nfs4_xdr_enc_read(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_readargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_read(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_read(xdr, args, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
args->pages, args->pgbase, args->count);
req->rq_rcv_buf.flags |= XDRBUF_READ;
encode_nops(&hdr);
- return 0;
}
/*
* Encode an SETATTR request
*/
-static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
+static void nfs4_xdr_enc_setattr(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_setattrargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_setattr(&xdr, args, args->server, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_setattr(xdr, args, args->server, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a GETACL request
*/
-static int
-nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
- struct nfs_getaclargs *args)
+static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_getaclargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
uint32_t replen;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
- encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
+ encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
args->acl_pages, args->acl_pgbase, args->acl_len);
encode_nops(&hdr);
- return 0;
}
/*
* Encode a WRITE request
*/
-static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
+static void nfs4_xdr_enc_write(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_writeargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_write(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_write(xdr, args, &hdr);
req->rq_snd_buf.flags |= XDRBUF_WRITE;
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a COMMIT request
*/
-static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
+static void nfs4_xdr_enc_commit(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_writeargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_commit(&xdr, args, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_commit(xdr, args, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* FSINFO request
*/
-static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
+static void nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs4_fsinfo_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_fsinfo(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_fsinfo(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a PATHCONF request
*/
-static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
+static void nfs4_xdr_enc_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_pathconf_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
&hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a STATFS request
*/
-static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
+static void nfs4_xdr_enc_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfs4_statfs_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* GETATTR_BITMAP request
*/
-static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p,
- struct nfs4_server_caps_arg *args)
+static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_server_caps_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fhandle, &hdr);
- encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fhandle, &hdr);
+ encode_getattr_one(xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
FATTR4_WORD0_LINK_SUPPORT|
FATTR4_WORD0_SYMLINK_SUPPORT|
FATTR4_WORD0_ACLSUPPORT, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a RENEW request
*/
-static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
+static void nfs4_xdr_enc_renew(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_client *clp)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 0,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_renew(&xdr, clp, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_renew(xdr, clp, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a SETCLIENTID request
*/
-static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
+static void nfs4_xdr_enc_setclientid(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_setclientid *sc)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 0,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_setclientid(&xdr, sc, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_setclientid(xdr, sc, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a SETCLIENTID_CONFIRM request
*/
-static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid_res *arg)
+static void nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_setclientid_res *arg)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.nops = 0,
};
const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_setclientid_confirm(&xdr, arg, &hdr);
- encode_putrootfh(&xdr, &hdr);
- encode_fsinfo(&xdr, lease_bitmap, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_setclientid_confirm(xdr, arg, &hdr);
+ encode_putrootfh(xdr, &hdr);
+ encode_fsinfo(xdr, lease_bitmap, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* DELEGRETURN request
*/
-static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
+static void nfs4_xdr_enc_delegreturn(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ const struct nfs4_delegreturnargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fhandle, &hdr);
- encode_delegreturn(&xdr, args->stateid, &hdr);
- encode_getfattr(&xdr, args->bitmask, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fhandle, &hdr);
+ encode_delegreturn(xdr, args->stateid, &hdr);
+ encode_getfattr(xdr, args->bitmask, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode FS_LOCATIONS request
*/
-static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
+static void nfs4_xdr_enc_fs_locations(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_fs_locations_arg *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
uint32_t replen;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->dir_fh, &hdr);
- encode_lookup(&xdr, args->name, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->dir_fh, &hdr);
+ encode_lookup(xdr, args->name, &hdr);
replen = hdr.replen; /* get the attribute into args->page */
- encode_fs_locations(&xdr, args->bitmask, &hdr);
+ encode_fs_locations(xdr, args->bitmask, &hdr);
xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
0, PAGE_SIZE);
encode_nops(&hdr);
- return 0;
}
#if defined(CONFIG_NFS_V4_1)
/*
* EXCHANGE_ID request
*/
-static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p,
- struct nfs41_exchange_id_args *args)
+static void nfs4_xdr_enc_exchange_id(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs41_exchange_id_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = args->client->cl_mvops->minor_version,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_exchange_id(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_exchange_id(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a CREATE_SESSION request
*/
-static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p,
- struct nfs41_create_session_args *args)
+static void nfs4_xdr_enc_create_session(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs41_create_session_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = args->client->cl_mvops->minor_version,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_create_session(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_create_session(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a DESTROY_SESSION request
*/
-static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p,
- struct nfs4_session *session)
+static void nfs4_xdr_enc_destroy_session(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_session *session)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = session->clp->cl_mvops->minor_version,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_destroy_session(&xdr, session, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_destroy_session(xdr, session, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a SEQUENCE request
*/
-static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p,
- struct nfs4_sequence_args *args)
+static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs4_sequence_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a GET_LEASE_TIME request
*/
-static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
- struct nfs4_get_lease_time_args *args)
+static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_get_lease_time_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
};
const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->la_seq_args, &hdr);
- encode_putrootfh(&xdr, &hdr);
- encode_fsinfo(&xdr, lease_bitmap, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->la_seq_args, &hdr);
+ encode_putrootfh(xdr, &hdr);
+ encode_fsinfo(xdr, lease_bitmap, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* a RECLAIM_COMPLETE request
*/
-static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p,
- struct nfs41_reclaim_complete_args *args)
+static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs41_reclaim_complete_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args)
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_reclaim_complete(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_reclaim_complete(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
/*
* Encode GETDEVICEINFO request
*/
-static int nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, uint32_t *p,
- struct nfs4_getdeviceinfo_args *args)
+static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_getdeviceinfo_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_getdeviceinfo(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_getdeviceinfo(xdr, args, &hdr);
/* set up reply kvec. Subtract notification bitmap max size (2)
* so that notification bitmap is put in xdr_buf tail */
@@ -2657,27 +2583,24 @@ static int nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, uint32_t *p,
args->pdev->pglen);
encode_nops(&hdr);
- return 0;
}
/*
* Encode LAYOUTGET request
*/
-static int nfs4_xdr_enc_layoutget(struct rpc_rqst *req, uint32_t *p,
- struct nfs4_layoutget_args *args)
+static void nfs4_xdr_enc_layoutget(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_layoutget_args *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, NFS_FH(args->inode), &hdr);
- encode_layoutget(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, NFS_FH(args->inode), &hdr);
+ encode_layoutget(xdr, args, &hdr);
encode_nops(&hdr);
- return 0;
}
#endif /* CONFIG_NFS_V4_1 */
@@ -5368,22 +5291,18 @@ out:
/*
* Encode an SETACL request
*/
-static int
-nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
+static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
+ struct nfs_setaclargs *args)
{
- struct xdr_stream xdr;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
- int status;
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_compound_hdr(&xdr, req, &hdr);
- encode_sequence(&xdr, &args->seq_args, &hdr);
- encode_putfh(&xdr, args->fh, &hdr);
- status = encode_setacl(&xdr, args, &hdr);
+ encode_compound_hdr(xdr, req, &hdr);
+ encode_sequence(xdr, &args->seq_args, &hdr);
+ encode_putfh(xdr, args->fh, &hdr);
+ encode_setacl(xdr, args, &hdr);
encode_nops(&hdr);
- return status;
}
/*
@@ -6316,7 +6235,7 @@ nfs4_stat_to_errno(int stat)
#define PROC(proc, argtype, restype) \
[NFSPROC4_CLNT_##proc] = { \
.p_proc = NFSPROC4_COMPOUND, \
- .p_encode = (kxdrproc_t)nfs4_xdr_##argtype, \
+ .p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
.p_decode = (kxdrproc_t)nfs4_xdr_##restype, \
.p_arglen = NFS4_##argtype##_sz, \
.p_replen = NFS4_##restype##_sz, \
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 6529534..c363efd 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -499,34 +499,28 @@ out_default:
/*
* NB: Without this zero space reservation, callbacks over krb5p fail
*/
-static int nfs4_xdr_enc_cb_null(struct rpc_rqst *req, __be32 *p, void *__unused)
+static void nfs4_xdr_enc_cb_null(struct rpc_rqst *req, struct xdr_stream *xdr,
+ void *__unused)
{
- struct xdr_stream xdrs, *xdr = &xdrs;
-
- xdr_init_encode(&xdrs, &req->rq_snd_buf, p);
xdr_reserve_space(xdr, 0);
- return 0;
}
/*
* 20.2. Operation 4: CB_RECALL - Recall a Delegation
*/
-static int nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p,
- const struct nfsd4_callback *cb)
+static void nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct nfsd4_callback *cb)
{
- struct xdr_stream xdr;
const struct nfs4_delegation *args = cb->cb_op;
struct nfs4_cb_compound_hdr hdr = {
.ident = cb->cb_clp->cl_cb_ident,
.minorversion = cb->cb_minorversion,
};
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
- encode_cb_compound4args(&xdr, &hdr);
- encode_cb_sequence4args(&xdr, cb, &hdr);
- encode_cb_recall4args(&xdr, args, &hdr);
+ encode_cb_compound4args(xdr, &hdr);
+ encode_cb_sequence4args(xdr, cb, &hdr);
+ encode_cb_recall4args(xdr, args, &hdr);
encode_cb_nops(&hdr);
- return 0;
}
@@ -583,7 +577,7 @@ out_default:
#define PROC(proc, call, argtype, restype) \
[NFSPROC4_CLNT_##proc] = { \
.p_proc = NFSPROC4_CB_##call, \
- .p_encode = (kxdrproc_t)nfs4_xdr_enc_##argtype, \
+ .p_encode = (kxdreproc_t)nfs4_xdr_enc_##argtype, \
.p_decode = (kxdrproc_t)nfs4_xdr_dec_##restype, \
.p_arglen = NFS4_enc_##argtype##_sz, \
.p_replen = NFS4_dec_##restype##_sz, \
diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index b202475..d88cffb 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -110,7 +110,7 @@ struct rpc_credops {
__be32 * (*crmarshal)(struct rpc_task *, __be32 *);
int (*crrefresh)(struct rpc_task *);
__be32 * (*crvalidate)(struct rpc_task *, __be32 *);
- int (*crwrap_req)(struct rpc_task *, kxdrproc_t,
+ int (*crwrap_req)(struct rpc_task *, kxdreproc_t,
void *, __be32 *, void *);
int (*crunwrap_resp)(struct rpc_task *, kxdrproc_t,
void *, __be32 *, void *);
@@ -139,7 +139,7 @@ struct rpc_cred * rpcauth_generic_bind_cred(struct rpc_task *, struct rpc_cred *
void put_rpccred(struct rpc_cred *);
__be32 * rpcauth_marshcred(struct rpc_task *, __be32 *);
__be32 * rpcauth_checkverf(struct rpc_task *, __be32 *);
-int rpcauth_wrap_req(struct rpc_task *task, kxdrproc_t encode, void *rqstp, __be32 *data, void *obj);
+int rpcauth_wrap_req(struct rpc_task *task, kxdreproc_t encode, void *rqstp, __be32 *data, void *obj);
int rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp, __be32 *data, void *obj);
int rpcauth_refreshcred(struct rpc_task *);
void rpcauth_invalcred(struct rpc_task *);
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index a5a55f2..7b19c4e 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -89,7 +89,7 @@ struct rpc_version {
*/
struct rpc_procinfo {
u32 p_proc; /* RPC procedure number */
- kxdrproc_t p_encode; /* XDR encode function */
+ kxdreproc_t p_encode; /* XDR encode function */
kxdrproc_t p_decode; /* XDR decode function */
unsigned int p_arglen; /* argument hdr length (u32) */
unsigned int p_replen; /* reply hdr length (u32) */
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index 498ab93..a21cf53 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -33,8 +33,8 @@ struct xdr_netobj {
};
/*
- * This is the generic XDR function. rqstp is either a rpc_rqst (client
- * side) or svc_rqst pointer (server side).
+ * This is the legacy generic XDR function. rqstp is either a rpc_rqst
+ * (client side) or svc_rqst pointer (server side).
* Encode functions always assume there's enough room in the buffer.
*/
typedef int (*kxdrproc_t)(void *rqstp, __be32 *data, void *obj);
@@ -203,6 +203,11 @@ struct xdr_stream {
struct kvec *iov; /* pointer to the current kvec */
};
+/*
+ * This is the xdr_stream style generic XDR function.
+ */
+typedef void (*kxdreproc_t)(void *rqstp, struct xdr_stream *xdr, void *obj);
+
extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p);
extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes);
extern void xdr_write_pages(struct xdr_stream *xdr, struct page **pages,
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index afe6784..651c9da 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -563,8 +563,17 @@ rpcauth_checkverf(struct rpc_task *task, __be32 *p)
return cred->cr_ops->crvalidate(task, p);
}
+static void rpcauth_wrap_req_encode(kxdreproc_t encode, struct rpc_rqst *rqstp,
+ __be32 *data, void *obj)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &rqstp->rq_snd_buf, data);
+ encode(rqstp, &xdr, obj);
+}
+
int
-rpcauth_wrap_req(struct rpc_task *task, kxdrproc_t encode, void *rqstp,
+rpcauth_wrap_req(struct rpc_task *task, kxdreproc_t encode, void *rqstp,
__be32 *data, void *obj)
{
struct rpc_cred *cred = task->tk_rqstp->rq_cred;
@@ -574,7 +583,8 @@ rpcauth_wrap_req(struct rpc_task *task, kxdrproc_t encode, void *rqstp,
if (cred->cr_ops->crwrap_req)
return cred->cr_ops->crwrap_req(task, encode, rqstp, data, obj);
/* By default, we encode the arguments normally. */
- return encode(rqstp, data, obj);
+ rpcauth_wrap_req_encode(encode, rqstp, data, obj);
+ return 0;
}
int
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 3835ce3..42b46f9 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -1231,9 +1231,19 @@ out_bad:
return NULL;
}
+static void gss_wrap_req_encode(kxdreproc_t encode, struct rpc_rqst *rqstp,
+ __be32 *p, void *obj)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_encode(&xdr, &rqstp->rq_snd_buf, p);
+ encode(rqstp, &xdr, obj);
+}
+
static inline int
gss_wrap_req_integ(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
- kxdrproc_t encode, struct rpc_rqst *rqstp, __be32 *p, void *obj)
+ kxdreproc_t encode, struct rpc_rqst *rqstp,
+ __be32 *p, void *obj)
{
struct xdr_buf *snd_buf = &rqstp->rq_snd_buf;
struct xdr_buf integ_buf;
@@ -1249,9 +1259,7 @@ gss_wrap_req_integ(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
offset = (u8 *)p - (u8 *)snd_buf->head[0].iov_base;
*p++ = htonl(rqstp->rq_seqno);
- status = encode(rqstp, p, obj);
- if (status)
- return status;
+ gss_wrap_req_encode(encode, rqstp, p, obj);
if (xdr_buf_subsegment(snd_buf, &integ_buf,
offset, snd_buf->len - offset))
@@ -1325,7 +1333,8 @@ out:
static inline int
gss_wrap_req_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
- kxdrproc_t encode, struct rpc_rqst *rqstp, __be32 *p, void *obj)
+ kxdreproc_t encode, struct rpc_rqst *rqstp,
+ __be32 *p, void *obj)
{
struct xdr_buf *snd_buf = &rqstp->rq_snd_buf;
u32 offset;
@@ -1342,9 +1351,7 @@ gss_wrap_req_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
offset = (u8 *)p - (u8 *)snd_buf->head[0].iov_base;
*p++ = htonl(rqstp->rq_seqno);
- status = encode(rqstp, p, obj);
- if (status)
- return status;
+ gss_wrap_req_encode(encode, rqstp, p, obj);
status = alloc_enc_pages(rqstp);
if (status)
@@ -1394,7 +1401,7 @@ gss_wrap_req_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
static int
gss_wrap_req(struct rpc_task *task,
- kxdrproc_t encode, void *rqstp, __be32 *p, void *obj)
+ kxdreproc_t encode, void *rqstp, __be32 *p, void *obj)
{
struct rpc_cred *cred = task->tk_rqstp->rq_cred;
struct gss_cred *gss_cred = container_of(cred, struct gss_cred,
@@ -1407,12 +1414,14 @@ gss_wrap_req(struct rpc_task *task,
/* The spec seems a little ambiguous here, but I think that not
* wrapping context destruction requests makes the most sense.
*/
- status = encode(rqstp, p, obj);
+ gss_wrap_req_encode(encode, rqstp, p, obj);
+ status = 0;
goto out;
}
switch (gss_cred->gc_service) {
case RPC_GSS_SVC_NONE:
- status = encode(rqstp, p, obj);
+ gss_wrap_req_encode(encode, rqstp, p, obj);
+ status = 0;
break;
case RPC_GSS_SVC_INTEGRITY:
status = gss_wrap_req_integ(cred, ctx, encode,
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 92ce94f..d446a32 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1095,7 +1095,7 @@ static void
rpc_xdr_encode(struct rpc_task *task)
{
struct rpc_rqst *req = task->tk_rqstp;
- kxdrproc_t encode;
+ kxdreproc_t encode;
__be32 *p;
dprint_status(task);
@@ -1776,9 +1776,8 @@ out_overflow:
goto out_garbage;
}
-static int rpcproc_encode_null(void *rqstp, __be32 *data, void *obj)
+static void rpcproc_encode_null(void *rqstp, struct xdr_stream *xdr, void *obj)
{
- return 0;
}
static int rpcproc_decode_null(void *rqstp, __be32 *data, void *obj)
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index 43838c7..63912a1 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -689,25 +689,21 @@ static void rpcb_getport_done(struct rpc_task *child, void *data)
* XDR functions for rpcbind
*/
-static int rpcb_enc_mapping(struct rpc_rqst *req, __be32 *p,
- const struct rpcbind_args *rpcb)
+static void rpcb_enc_mapping(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct rpcbind_args *rpcb)
{
struct rpc_task *task = req->rq_task;
- struct xdr_stream xdr;
+ __be32 *p;
dprintk("RPC: %5u encoding PMAP_%s call (%u, %u, %d, %u)\n",
task->tk_pid, task->tk_msg.rpc_proc->p_name,
rpcb->r_prog, rpcb->r_vers, rpcb->r_prot, rpcb->r_port);
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
-
- p = xdr_reserve_space(&xdr, RPCB_mappingargs_sz << 2);
+ p = xdr_reserve_space(xdr, RPCB_mappingargs_sz << 2);
*p++ = cpu_to_be32(rpcb->r_prog);
*p++ = cpu_to_be32(rpcb->r_vers);
*p++ = cpu_to_be32(rpcb->r_prot);
*p = cpu_to_be32(rpcb->r_port);
-
- return 0;
}
static int rpcb_dec_getport(struct rpc_rqst *req, __be32 *p,
@@ -769,27 +765,24 @@ static void encode_rpcb_string(struct xdr_stream *xdr, const char *string,
xdr_encode_opaque(p, string, len);
}
-static int rpcb_enc_getaddr(struct rpc_rqst *req, __be32 *p,
- const struct rpcbind_args *rpcb)
+static void rpcb_enc_getaddr(struct rpc_rqst *req, struct xdr_stream *xdr,
+ const struct rpcbind_args *rpcb)
{
struct rpc_task *task = req->rq_task;
- struct xdr_stream xdr;
+ __be32 *p;
dprintk("RPC: %5u encoding RPCB_%s call (%u, %u, '%s', '%s')\n",
task->tk_pid, task->tk_msg.rpc_proc->p_name,
rpcb->r_prog, rpcb->r_vers,
rpcb->r_netid, rpcb->r_addr);
- xdr_init_encode(&xdr, &req->rq_snd_buf, p);
-
- p = xdr_reserve_space(&xdr, (RPCB_program_sz + RPCB_version_sz) << 2);
+ p = xdr_reserve_space(xdr, (RPCB_program_sz + RPCB_version_sz) << 2);
*p++ = cpu_to_be32(rpcb->r_prog);
*p = cpu_to_be32(rpcb->r_vers);
- encode_rpcb_string(&xdr, rpcb->r_netid, RPCBIND_MAXNETIDLEN);
- encode_rpcb_string(&xdr, rpcb->r_addr, RPCBIND_MAXUADDRLEN);
- encode_rpcb_string(&xdr, rpcb->r_owner, RPCB_MAXOWNERLEN);
- return 0;
+ encode_rpcb_string(xdr, rpcb->r_netid, RPCBIND_MAXNETIDLEN);
+ encode_rpcb_string(xdr, rpcb->r_addr, RPCBIND_MAXUADDRLEN);
+ encode_rpcb_string(xdr, rpcb->r_owner, RPCB_MAXOWNERLEN);
}
static int rpcb_dec_getaddr(struct rpc_rqst *req, __be32 *p,
@@ -849,7 +842,7 @@ out_fail:
static struct rpc_procinfo rpcb_procedures2[] = {
[RPCBPROC_SET] = {
.p_proc = RPCBPROC_SET,
- .p_encode = (kxdrproc_t)rpcb_enc_mapping,
+ .p_encode = (kxdreproc_t)rpcb_enc_mapping,
.p_decode = (kxdrproc_t)rpcb_dec_set,
.p_arglen = RPCB_mappingargs_sz,
.p_replen = RPCB_setres_sz,
@@ -859,7 +852,7 @@ static struct rpc_procinfo rpcb_procedures2[] = {
},
[RPCBPROC_UNSET] = {
.p_proc = RPCBPROC_UNSET,
- .p_encode = (kxdrproc_t)rpcb_enc_mapping,
+ .p_encode = (kxdreproc_t)rpcb_enc_mapping,
.p_decode = (kxdrproc_t)rpcb_dec_set,
.p_arglen = RPCB_mappingargs_sz,
.p_replen = RPCB_setres_sz,
@@ -869,7 +862,7 @@ static struct rpc_procinfo rpcb_procedures2[] = {
},
[RPCBPROC_GETPORT] = {
.p_proc = RPCBPROC_GETPORT,
- .p_encode = (kxdrproc_t)rpcb_enc_mapping,
+ .p_encode = (kxdreproc_t)rpcb_enc_mapping,
.p_decode = (kxdrproc_t)rpcb_dec_getport,
.p_arglen = RPCB_mappingargs_sz,
.p_replen = RPCB_getportres_sz,
@@ -882,7 +875,7 @@ static struct rpc_procinfo rpcb_procedures2[] = {
static struct rpc_procinfo rpcb_procedures3[] = {
[RPCBPROC_SET] = {
.p_proc = RPCBPROC_SET,
- .p_encode = (kxdrproc_t)rpcb_enc_getaddr,
+ .p_encode = (kxdreproc_t)rpcb_enc_getaddr,
.p_decode = (kxdrproc_t)rpcb_dec_set,
.p_arglen = RPCB_getaddrargs_sz,
.p_replen = RPCB_setres_sz,
@@ -892,7 +885,7 @@ static struct rpc_procinfo rpcb_procedures3[] = {
},
[RPCBPROC_UNSET] = {
.p_proc = RPCBPROC_UNSET,
- .p_encode = (kxdrproc_t)rpcb_enc_getaddr,
+ .p_encode = (kxdreproc_t)rpcb_enc_getaddr,
.p_decode = (kxdrproc_t)rpcb_dec_set,
.p_arglen = RPCB_getaddrargs_sz,
.p_replen = RPCB_setres_sz,
@@ -902,7 +895,7 @@ static struct rpc_procinfo rpcb_procedures3[] = {
},
[RPCBPROC_GETADDR] = {
.p_proc = RPCBPROC_GETADDR,
- .p_encode = (kxdrproc_t)rpcb_enc_getaddr,
+ .p_encode = (kxdreproc_t)rpcb_enc_getaddr,
.p_decode = (kxdrproc_t)rpcb_dec_getaddr,
.p_arglen = RPCB_getaddrargs_sz,
.p_replen = RPCB_getaddrres_sz,
@@ -915,7 +908,7 @@ static struct rpc_procinfo rpcb_procedures3[] = {
static struct rpc_procinfo rpcb_procedures4[] = {
[RPCBPROC_SET] = {
.p_proc = RPCBPROC_SET,
- .p_encode = (kxdrproc_t)rpcb_enc_getaddr,
+ .p_encode = (kxdreproc_t)rpcb_enc_getaddr,
.p_decode = (kxdrproc_t)rpcb_dec_set,
.p_arglen = RPCB_getaddrargs_sz,
.p_replen = RPCB_setres_sz,
@@ -925,7 +918,7 @@ static struct rpc_procinfo rpcb_procedures4[] = {
},
[RPCBPROC_UNSET] = {
.p_proc = RPCBPROC_UNSET,
- .p_encode = (kxdrproc_t)rpcb_enc_getaddr,
+ .p_encode = (kxdreproc_t)rpcb_enc_getaddr,
.p_decode = (kxdrproc_t)rpcb_dec_set,
.p_arglen = RPCB_getaddrargs_sz,
.p_replen = RPCB_setres_sz,
@@ -935,7 +928,7 @@ static struct rpc_procinfo rpcb_procedures4[] = {
},
[RPCBPROC_GETADDR] = {
.p_proc = RPCBPROC_GETADDR,
- .p_encode = (kxdrproc_t)rpcb_enc_getaddr,
+ .p_encode = (kxdreproc_t)rpcb_enc_getaddr,
.p_decode = (kxdrproc_t)rpcb_dec_getaddr,
.p_arglen = RPCB_getaddrargs_sz,
.p_replen = RPCB_getaddrres_sz,
^ permalink raw reply related [flat|nested] 53+ messages in thread* [PATCH 31/31] SUNRPC: New xdr_streams XDR decoder API
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (29 preceding siblings ...)
2010-12-14 14:59 ` [PATCH 30/31] SUNRPC: New xdr_streams XDR encoder API Chuck Lever
@ 2010-12-14 14:59 ` Chuck Lever
2010-12-16 19:14 ` [PATCH 00/31] NFS XDR clean up for 2.6.38 Steve Dickson
31 siblings, 0 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-14 14:59 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Now that all client-side XDR decoder routines use xdr_streams, there
should be no need to support the legacy calling sequence [rpc_rqst *,
__be32 *, RPC res *] anywhere. We can construct an xdr_stream in the
generic RPC code, instead of in each decoder function.
This is a refactoring change. It should not cause different behavior.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
---
fs/lockd/clnt4xdr.c | 20 +
fs/lockd/clntxdr.c | 20 +
fs/lockd/mon.c | 30 +-
fs/nfs/mount_clnt.c | 30 +-
fs/nfs/nfs2xdr.c | 68 ++--
fs/nfs/nfs3xdr.c | 195 ++++++-------
fs/nfs/nfs4xdr.c | 619 ++++++++++++++++++++--------------------
fs/nfsd/nfs4callback.c | 16 +
include/linux/sunrpc/auth.h | 4
include/linux/sunrpc/clnt.h | 2
include/linux/sunrpc/xdr.h | 3
net/sunrpc/auth.c | 14 +
net/sunrpc/auth_gss/auth_gss.c | 13 +
net/sunrpc/clnt.c | 4
net/sunrpc/rpcb_clnt.c | 46 +--
15 files changed, 518 insertions(+), 566 deletions(-)
diff --git a/fs/lockd/clnt4xdr.c b/fs/lockd/clnt4xdr.c
index 974f1d9..f848b52 100644
--- a/fs/lockd/clnt4xdr.c
+++ b/fs/lockd/clnt4xdr.c
@@ -529,17 +529,16 @@ out:
return error;
}
-static int nlm4_xdr_dec_testres(struct rpc_rqst *req, __be32 *p,
+static int nlm4_xdr_dec_testres(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nlm_res *result)
{
- struct xdr_stream xdr;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_cookie(&xdr, &result->cookie);
+ error = decode_cookie(xdr, &result->cookie);
if (unlikely(error))
goto out;
- error = decode_nlm4_testrply(&xdr, result);
+ error = decode_nlm4_testrply(xdr, result);
out:
return error;
}
@@ -550,17 +549,16 @@ out:
* nlm4_stat stat;
* };
*/
-static int nlm4_xdr_dec_res(struct rpc_rqst *req, __be32 *p,
+static int nlm4_xdr_dec_res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nlm_res *result)
{
- struct xdr_stream xdr;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_cookie(&xdr, &result->cookie);
+ error = decode_cookie(xdr, &result->cookie);
if (unlikely(error))
goto out;
- error = decode_nlm4_stat(&xdr, &result->status);
+ error = decode_nlm4_stat(xdr, &result->status);
out:
return error;
}
@@ -575,7 +573,7 @@ out:
[NLMPROC_##proc] = { \
.p_proc = NLMPROC_##proc, \
.p_encode = (kxdreproc_t)nlm4_xdr_enc_##argtype, \
- .p_decode = (kxdrproc_t)nlm4_xdr_dec_##restype, \
+ .p_decode = (kxdrdproc_t)nlm4_xdr_dec_##restype, \
.p_arglen = NLM4_##argtype##_sz, \
.p_replen = NLM4_##restype##_sz, \
.p_statidx = NLMPROC_##proc, \
diff --git a/fs/lockd/clntxdr.c b/fs/lockd/clntxdr.c
index c6fda8f..180ac34 100644
--- a/fs/lockd/clntxdr.c
+++ b/fs/lockd/clntxdr.c
@@ -527,17 +527,16 @@ out:
return error;
}
-static int nlm_xdr_dec_testres(struct rpc_rqst *req, __be32 *p,
+static int nlm_xdr_dec_testres(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nlm_res *result)
{
- struct xdr_stream xdr;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_cookie(&xdr, &result->cookie);
+ error = decode_cookie(xdr, &result->cookie);
if (unlikely(error))
goto out;
- error = decode_nlm_testrply(&xdr, result);
+ error = decode_nlm_testrply(xdr, result);
out:
return error;
}
@@ -548,17 +547,16 @@ out:
* nlm_stat stat;
* };
*/
-static int nlm_xdr_dec_res(struct rpc_rqst *req, __be32 *p,
+static int nlm_xdr_dec_res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nlm_res *result)
{
- struct xdr_stream xdr;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_cookie(&xdr, &result->cookie);
+ error = decode_cookie(xdr, &result->cookie);
if (unlikely(error))
goto out;
- error = decode_nlm_stat(&xdr, &result->status);
+ error = decode_nlm_stat(xdr, &result->status);
out:
return error;
}
@@ -573,7 +571,7 @@ out:
[NLMPROC_##proc] = { \
.p_proc = NLMPROC_##proc, \
.p_encode = (kxdreproc_t)nlm_xdr_enc_##argtype, \
- .p_decode = (kxdrproc_t)nlm_xdr_dec_##restype, \
+ .p_decode = (kxdrdproc_t)nlm_xdr_dec_##restype, \
.p_arglen = NLM_##argtype##_sz, \
.p_replen = NLM_##restype##_sz, \
.p_statidx = NLMPROC_##proc, \
diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c
index baa77bc..23d7451 100644
--- a/fs/lockd/mon.c
+++ b/fs/lockd/mon.c
@@ -472,35 +472,35 @@ static void nsm_xdr_enc_unmon(struct rpc_rqst *req, struct xdr_stream *xdr,
encode_mon_id(xdr, argp);
}
-static int xdr_dec_stat_res(struct rpc_rqst *rqstp, __be32 *p,
- struct nsm_res *resp)
+static int nsm_xdr_dec_stat_res(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nsm_res *resp)
{
- struct xdr_stream xdr;
+ __be32 *p;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- p = xdr_inline_decode(&xdr, 4 + 4);
+ p = xdr_inline_decode(xdr, 4 + 4);
if (unlikely(p == NULL))
return -EIO;
resp->status = be32_to_cpup(p++);
resp->state = be32_to_cpup(p);
- dprintk("lockd: xdr_dec_stat_res status %d state %d\n",
- resp->status, resp->state);
+ dprintk("lockd: %s status %d state %d\n",
+ __func__, resp->status, resp->state);
return 0;
}
-static int xdr_dec_stat(struct rpc_rqst *rqstp, __be32 *p,
- struct nsm_res *resp)
+static int nsm_xdr_dec_stat(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nsm_res *resp)
{
- struct xdr_stream xdr;
+ __be32 *p;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- p = xdr_inline_decode(&xdr, 4);
+ p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return -EIO;
resp->state = be32_to_cpup(p);
- dprintk("lockd: xdr_dec_stat state %d\n", resp->state);
+ dprintk("lockd: %s state %d\n", __func__, resp->state);
return 0;
}
@@ -517,7 +517,7 @@ static struct rpc_procinfo nsm_procedures[] = {
[NSMPROC_MON] = {
.p_proc = NSMPROC_MON,
.p_encode = (kxdreproc_t)nsm_xdr_enc_mon,
- .p_decode = (kxdrproc_t)xdr_dec_stat_res,
+ .p_decode = (kxdrdproc_t)nsm_xdr_dec_stat_res,
.p_arglen = SM_mon_sz,
.p_replen = SM_monres_sz,
.p_statidx = NSMPROC_MON,
@@ -526,7 +526,7 @@ static struct rpc_procinfo nsm_procedures[] = {
[NSMPROC_UNMON] = {
.p_proc = NSMPROC_UNMON,
.p_encode = (kxdreproc_t)nsm_xdr_enc_unmon,
- .p_decode = (kxdrproc_t)xdr_dec_stat,
+ .p_decode = (kxdrdproc_t)nsm_xdr_dec_stat,
.p_arglen = SM_mon_id_sz,
.p_replen = SM_unmonres_sz,
.p_statidx = NSMPROC_UNMON,
diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index 979ebd7..697e072 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -340,18 +340,16 @@ static int decode_fhandle(struct xdr_stream *xdr, struct mountres *res)
return 0;
}
-static int mnt_dec_mountres(struct rpc_rqst *req, __be32 *p,
- struct mountres *res)
+static int mnt_xdr_dec_mountres(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct mountres *res)
{
- struct xdr_stream xdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
-
- status = decode_status(&xdr, res);
+ status = decode_status(xdr, res);
if (unlikely(status != 0 || res->errno != 0))
return status;
- return decode_fhandle(&xdr, res);
+ return decode_fhandle(xdr, res);
}
static int decode_fhs_status(struct xdr_stream *xdr, struct mountres *res)
@@ -434,30 +432,28 @@ static int decode_auth_flavors(struct xdr_stream *xdr, struct mountres *res)
return 0;
}
-static int mnt_dec_mountres3(struct rpc_rqst *req, __be32 *p,
- struct mountres *res)
+static int mnt_xdr_dec_mountres3(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct mountres *res)
{
- struct xdr_stream xdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
-
- status = decode_fhs_status(&xdr, res);
+ status = decode_fhs_status(xdr, res);
if (unlikely(status != 0 || res->errno != 0))
return status;
- status = decode_fhandle3(&xdr, res);
+ status = decode_fhandle3(xdr, res);
if (unlikely(status != 0)) {
res->errno = -EBADHANDLE;
return 0;
}
- return decode_auth_flavors(&xdr, res);
+ return decode_auth_flavors(xdr, res);
}
static struct rpc_procinfo mnt_procedures[] = {
[MOUNTPROC_MNT] = {
.p_proc = MOUNTPROC_MNT,
.p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath,
- .p_decode = (kxdrproc_t)mnt_dec_mountres,
+ .p_decode = (kxdrdproc_t)mnt_xdr_dec_mountres,
.p_arglen = MNT_enc_dirpath_sz,
.p_replen = MNT_dec_mountres_sz,
.p_statidx = MOUNTPROC_MNT,
@@ -476,7 +472,7 @@ static struct rpc_procinfo mnt3_procedures[] = {
[MOUNTPROC3_MNT] = {
.p_proc = MOUNTPROC3_MNT,
.p_encode = (kxdreproc_t)mnt_xdr_enc_dirpath,
- .p_decode = (kxdrproc_t)mnt_dec_mountres3,
+ .p_decode = (kxdrdproc_t)mnt_xdr_dec_mountres3,
.p_arglen = MNT_enc_dirpath_sz,
.p_replen = MNT_dec_mountres3_sz,
.p_statidx = MOUNTPROC3_MNT,
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 8f3acbe..51f1cfa 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -783,15 +783,13 @@ static void nfs2_xdr_enc_readdirargs(struct rpc_rqst *req,
* "NFS: Network File System Protocol Specification".
*/
-static int nfs2_xdr_dec_stat(struct rpc_rqst *req, __be32 *p,
+static int nfs2_xdr_dec_stat(struct rpc_rqst *req, struct xdr_stream *xdr,
void *__unused)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_stat(&xdr, &status);
+ error = decode_stat(xdr, &status);
if (unlikely(error))
goto out;
if (status != NFS_OK)
@@ -802,22 +800,16 @@ out_default:
return nfs_stat_to_errno(status);
}
-static int nfs2_xdr_dec_attrstat(struct rpc_rqst *req, __be32 *p,
+static int nfs2_xdr_dec_attrstat(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_fattr *result)
{
- struct xdr_stream xdr;
-
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- return decode_attrstat(&xdr, result);
+ return decode_attrstat(xdr, result);
}
-static int nfs2_xdr_dec_diropres(struct rpc_rqst *req, __be32 *p,
+static int nfs2_xdr_dec_diropres(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_diropok *result)
{
- struct xdr_stream xdr;
-
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- return decode_diropres(&xdr, result);
+ return decode_diropres(xdr, result);
}
/*
@@ -830,20 +822,18 @@ static int nfs2_xdr_dec_diropres(struct rpc_rqst *req, __be32 *p,
* void;
* };
*/
-static int nfs2_xdr_dec_readlinkres(struct rpc_rqst *req, __be32 *p,
- void *__unused)
+static int nfs2_xdr_dec_readlinkres(struct rpc_rqst *req,
+ struct xdr_stream *xdr, void *__unused)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_stat(&xdr, &status);
+ error = decode_stat(xdr, &status);
if (unlikely(error))
goto out;
if (status != NFS_OK)
goto out_default;
- error = decode_path(&xdr);
+ error = decode_path(xdr);
out:
return error;
out_default:
@@ -861,39 +851,33 @@ out_default:
* void;
* };
*/
-static int nfs2_xdr_dec_readres(struct rpc_rqst *req, __be32 *p,
+static int nfs2_xdr_dec_readres(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_readres *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_stat(&xdr, &status);
+ error = decode_stat(xdr, &status);
if (unlikely(error))
goto out;
if (status != NFS_OK)
goto out_default;
- error = decode_fattr(&xdr, result->fattr);
+ error = decode_fattr(xdr, result->fattr);
if (unlikely(error))
goto out;
- error = decode_nfsdata(&xdr, result);
+ error = decode_nfsdata(xdr, result);
out:
return error;
out_default:
return nfs_stat_to_errno(status);
}
-static int nfs2_xdr_dec_writeres(struct rpc_rqst *req, __be32 *p,
+static int nfs2_xdr_dec_writeres(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_writeres *result)
{
- struct xdr_stream xdr;
-
/* All NFSv2 writes are "file sync" writes */
result->verf->committed = NFS_FILE_SYNC;
-
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- return decode_attrstat(&xdr, result->fattr);
+ return decode_attrstat(xdr, result->fattr);
}
/**
@@ -1008,20 +992,18 @@ out_cheating:
goto out;
}
-static int nfs2_xdr_dec_readdirres(struct rpc_rqst *req, __be32 *p,
- void *__unused)
+static int nfs2_xdr_dec_readdirres(struct rpc_rqst *req,
+ struct xdr_stream *xdr, void *__unused)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_stat(&xdr, &status);
+ error = decode_stat(xdr, &status);
if (unlikely(error))
goto out;
if (status != NFS_OK)
goto out_default;
- error = decode_readdirok(&xdr);
+ error = decode_readdirok(xdr);
out:
return error;
out_default:
@@ -1062,20 +1044,18 @@ out_overflow:
return -EIO;
}
-static int nfs2_xdr_dec_statfsres(struct rpc_rqst *req, __be32 *p,
+static int nfs2_xdr_dec_statfsres(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs2_fsstat *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_stat(&xdr, &status);
+ error = decode_stat(xdr, &status);
if (unlikely(error))
goto out;
if (status != NFS_OK)
goto out_default;
- error = decode_info(&xdr, result);
+ error = decode_info(xdr, result);
out:
return error;
out_default:
@@ -1150,7 +1130,7 @@ int nfs_stat_to_errno(enum nfs_stat status)
[NFSPROC_##proc] = { \
.p_proc = NFSPROC_##proc, \
.p_encode = (kxdreproc_t)nfs2_xdr_enc_##argtype, \
- .p_decode = (kxdrproc_t)nfs2_xdr_dec_##restype, \
+ .p_decode = (kxdrdproc_t)nfs2_xdr_dec_##restype, \
.p_arglen = NFS_##argtype##_sz, \
.p_replen = NFS_##restype##_sz, \
.p_timer = timer, \
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c
index ae1b1a43..df30a26 100644
--- a/fs/nfs/nfs3xdr.c
+++ b/fs/nfs/nfs3xdr.c
@@ -1366,20 +1366,19 @@ static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req,
* void;
* };
*/
-static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs_fattr *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_default;
- error = decode_fattr3(&xdr, result);
+ error = decode_fattr3(xdr, result);
out:
return error;
out_default:
@@ -1404,18 +1403,17 @@ out_default:
* SETATTR3resfail resfail;
* };
*/
-static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs_fattr *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
- error = decode_wcc_data(&xdr, result);
+ error = decode_wcc_data(xdr, result);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
@@ -1446,30 +1444,29 @@ out_status:
* LOOKUP3resfail resfail;
* };
*/
-static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs3_diropres *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_default;
- error = decode_nfs_fh3(&xdr, result->fh);
+ error = decode_nfs_fh3(xdr, result->fh);
if (unlikely(error))
goto out;
- error = decode_post_op_attr(&xdr, result->fattr);
+ error = decode_post_op_attr(xdr, result->fattr);
if (unlikely(error))
goto out;
- error = decode_post_op_attr(&xdr, result->dir_attr);
+ error = decode_post_op_attr(xdr, result->dir_attr);
out:
return error;
out_default:
- error = decode_post_op_attr(&xdr, result->dir_attr);
+ error = decode_post_op_attr(xdr, result->dir_attr);
if (unlikely(error))
goto out;
return nfs_stat_to_errno(status);
@@ -1494,23 +1491,22 @@ out_default:
* ACCESS3resfail resfail;
* };
*/
-static int nfs3_xdr_dec_access3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_access3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs3_accessres *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
- error = decode_post_op_attr(&xdr, result->fattr);
+ error = decode_post_op_attr(xdr, result->fattr);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_default;
- error = decode_uint32(&xdr, &result->access);
+ error = decode_uint32(xdr, &result->access);
out:
return error;
out_default:
@@ -1536,23 +1532,22 @@ out_default:
* READLINK3resfail resfail;
* };
*/
-static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs_fattr *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
- error = decode_post_op_attr(&xdr, result);
+ error = decode_post_op_attr(xdr, result);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_default;
- error = decode_nfspath3(&xdr);
+ error = decode_nfspath3(xdr);
out:
return error;
out_default:
@@ -1620,23 +1615,21 @@ out_overflow:
return -EIO;
}
-static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_readres *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
- error = decode_post_op_attr(&xdr, result->fattr);
+ error = decode_post_op_attr(xdr, result->fattr);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_status;
- error = decode_read3resok(&xdr, result);
+ error = decode_read3resok(xdr, result);
out:
return error;
out_status:
@@ -1692,23 +1685,21 @@ out_overflow:
return -EIO;
}
-static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs_writeres *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
- error = decode_wcc_data(&xdr, result->fattr);
+ error = decode_wcc_data(xdr, result->fattr);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_status;
- error = decode_write3resok(&xdr, result);
+ error = decode_write3resok(xdr, result);
out:
return error;
out_status:
@@ -1757,24 +1748,23 @@ out:
return error;
}
-static int nfs3_xdr_dec_create3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_create3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs3_diropres *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_default;
- error = decode_create3resok(&xdr, result);
+ error = decode_create3resok(xdr, result);
out:
return error;
out_default:
- error = decode_wcc_data(&xdr, result->dir_attr);
+ error = decode_wcc_data(xdr, result->dir_attr);
if (unlikely(error))
goto out;
return nfs_stat_to_errno(status);
@@ -1798,18 +1788,17 @@ out_default:
* REMOVE3resfail resfail;
* };
*/
-static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs_removeres *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
- error = decode_wcc_data(&xdr, result->dir_attr);
+ error = decode_wcc_data(xdr, result->dir_attr);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
@@ -1840,21 +1829,20 @@ out_status:
* RENAME3resfail resfail;
* };
*/
-static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs_renameres *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
- error = decode_wcc_data(&xdr, result->old_fattr);
+ error = decode_wcc_data(xdr, result->old_fattr);
if (unlikely(error))
goto out;
- error = decode_wcc_data(&xdr, result->new_fattr);
+ error = decode_wcc_data(xdr, result->new_fattr);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
@@ -1885,21 +1873,19 @@ out_status:
* LINK3resfail resfail;
* };
*/
-static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs3_linkres *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
- error = decode_post_op_attr(&xdr, result->fattr);
+ error = decode_post_op_attr(xdr, result->fattr);
if (unlikely(error))
goto out;
- error = decode_wcc_data(&xdr, result->dir_attr);
+ error = decode_wcc_data(xdr, result->dir_attr);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
@@ -2085,24 +2071,23 @@ out:
return error;
}
-static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs3_readdirres *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_default;
- error = decode_readdir3resok(&xdr, result);
+ error = decode_readdir3resok(xdr, result);
out:
return error;
out_default:
- error = decode_post_op_attr(&xdr, result->dir_attr);
+ error = decode_post_op_attr(xdr, result->dir_attr);
if (unlikely(error))
goto out;
return nfs_stat_to_errno(status);
@@ -2154,23 +2139,22 @@ out_overflow:
return -EIO;
}
-static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs_fsstat *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
- error = decode_post_op_attr(&xdr, result->fattr);
+ error = decode_post_op_attr(xdr, result->fattr);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_status;
- error = decode_fsstat3resok(&xdr, result);
+ error = decode_fsstat3resok(xdr, result);
out:
return error;
out_status:
@@ -2231,23 +2215,22 @@ out_overflow:
return -EIO;
}
-static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs_fsinfo *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
- error = decode_post_op_attr(&xdr, result->fattr);
+ error = decode_post_op_attr(xdr, result->fattr);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_status;
- error = decode_fsinfo3resok(&xdr, result);
+ error = decode_fsinfo3resok(xdr, result);
out:
return error;
out_status:
@@ -2295,23 +2278,22 @@ out_overflow:
return -EIO;
}
-static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs_pathconf *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
- error = decode_post_op_attr(&xdr, result->fattr);
+ error = decode_post_op_attr(xdr, result->fattr);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_status;
- error = decode_pathconf3resok(&xdr, result);
+ error = decode_pathconf3resok(xdr, result);
out:
return error;
out_status:
@@ -2337,23 +2319,22 @@ out_status:
* COMMIT3resfail resfail;
* };
*/
-static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs_writeres *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
- error = decode_wcc_data(&xdr, result->fattr);
+ error = decode_wcc_data(xdr, result->fattr);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_status;
- error = decode_writeverf3(&xdr, result->verf->verifier);
+ error = decode_writeverf3(xdr, result->verf->verifier);
out:
return error;
out_status:
@@ -2406,40 +2387,38 @@ out:
return error;
}
-static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs3_getaclres *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_default;
- error = decode_getacl3resok(&xdr, result);
+ error = decode_getacl3resok(xdr, result);
out:
return error;
out_default:
return nfs_stat_to_errno(status);
}
-static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req, __be32 *p,
+static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs_fattr *result)
{
- struct xdr_stream xdr;
enum nfs_stat status;
int error;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- error = decode_nfsstat3(&xdr, &status);
+ error = decode_nfsstat3(xdr, &status);
if (unlikely(error))
goto out;
if (status != NFS3_OK)
goto out_default;
- error = decode_post_op_attr(&xdr, result);
+ error = decode_post_op_attr(xdr, result);
out:
return error;
out_default:
@@ -2452,7 +2431,7 @@ out_default:
[NFS3PROC_##proc] = { \
.p_proc = NFS3PROC_##proc, \
.p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \
- .p_decode = (kxdrproc_t)nfs3_xdr_dec_##restype##3res, \
+ .p_decode = (kxdrdproc_t)nfs3_xdr_dec_##restype##3res, \
.p_arglen = NFS3_##argtype##args_sz, \
.p_replen = NFS3_##restype##res_sz, \
.p_timer = timer, \
@@ -2495,7 +2474,7 @@ static struct rpc_procinfo nfs3_acl_procedures[] = {
[ACLPROC3_GETACL] = {
.p_proc = ACLPROC3_GETACL,
.p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args,
- .p_decode = (kxdrproc_t)nfs3_xdr_dec_getacl3res,
+ .p_decode = (kxdrdproc_t)nfs3_xdr_dec_getacl3res,
.p_arglen = ACL3_getaclargs_sz,
.p_replen = ACL3_getaclres_sz,
.p_timer = 1,
@@ -2504,7 +2483,7 @@ static struct rpc_procinfo nfs3_acl_procedures[] = {
[ACLPROC3_SETACL] = {
.p_proc = ACLPROC3_SETACL,
.p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args,
- .p_decode = (kxdrproc_t)nfs3_xdr_dec_setacl3res,
+ .p_decode = (kxdrdproc_t)nfs3_xdr_dec_setacl3res,
.p_arglen = ACL3_setaclargs_sz,
.p_replen = ACL3_setaclres_sz,
.p_timer = 0,
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 6ec38b3..f3f9915 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -5013,26 +5013,26 @@ out_overflow:
/*
* Decode OPEN_DOWNGRADE response
*/
-static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
+static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs_closeres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_open_downgrade(&xdr, res);
+ status = decode_open_downgrade(xdr, res);
if (status != 0)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5041,26 +5041,25 @@ out:
/*
* Decode ACCESS response
*/
-static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
+static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_accessres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status != 0)
goto out;
- status = decode_access(&xdr, res);
+ status = decode_access(xdr, res);
if (status != 0)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5069,26 +5068,28 @@ out:
/*
* Decode LOOKUP response
*/
-static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
+static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_lookup_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_lookup(&xdr)) != 0)
+ status = decode_lookup(xdr);
+ if (status)
goto out;
- if ((status = decode_getfh(&xdr, res->fh)) != 0)
+ status = decode_getfh(xdr, res->fh);
+ if (status)
goto out;
- status = decode_getfattr(&xdr, res->fattr, res->server
+ status = decode_getfattr(xdr, res->fattr, res->server
,!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5097,23 +5098,25 @@ out:
/*
* Decode LOOKUP_ROOT response
*/
-static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
+static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs4_lookup_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- if ((status = decode_putrootfh(&xdr)) != 0)
+ status = decode_putrootfh(xdr);
+ if (status)
goto out;
- if ((status = decode_getfh(&xdr, res->fh)) == 0)
- status = decode_getfattr(&xdr, res->fattr, res->server,
+ status = decode_getfh(xdr, res->fh);
+ if (status == 0)
+ status = decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5122,24 +5125,25 @@ out:
/*
* Decode REMOVE response
*/
-static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
+static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_removeres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
+ status = decode_remove(xdr, &res->cinfo);
+ if (status)
goto out;
- decode_getfattr(&xdr, res->dir_attr, res->server,
+ decode_getfattr(xdr, res->dir_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5148,34 +5152,38 @@ out:
/*
* Decode RENAME response
*/
-static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs_renameres *res)
+static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_renameres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_savefh(&xdr)) != 0)
+ status = decode_savefh(xdr);
+ if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
+ status = decode_rename(xdr, &res->old_cinfo, &res->new_cinfo);
+ if (status)
goto out;
/* Current FH is target directory */
- if (decode_getfattr(&xdr, res->new_fattr, res->server,
+ if (decode_getfattr(xdr, res->new_fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
goto out;
- if ((status = decode_restorefh(&xdr)) != 0)
+ status = decode_restorefh(xdr);
+ if (status)
goto out;
- decode_getfattr(&xdr, res->old_fattr, res->server,
+ decode_getfattr(xdr, res->old_fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5184,37 +5192,41 @@ out:
/*
* Decode LINK response
*/
-static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
+static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_link_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_savefh(&xdr)) != 0)
+ status = decode_savefh(xdr);
+ if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_link(&xdr, &res->cinfo)) != 0)
+ status = decode_link(xdr, &res->cinfo);
+ if (status)
goto out;
/*
* Note order: OP_LINK leaves the directory as the current
* filehandle.
*/
- if (decode_getfattr(&xdr, res->dir_attr, res->server,
+ if (decode_getfattr(xdr, res->dir_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
goto out;
- if ((status = decode_restorefh(&xdr)) != 0)
+ status = decode_restorefh(xdr);
+ if (status)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5223,33 +5235,37 @@ out:
/*
* Decode CREATE response
*/
-static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
+static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_create_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_savefh(&xdr)) != 0)
+ status = decode_savefh(xdr);
+ if (status)
goto out;
- if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
+ status = decode_create(xdr, &res->dir_cinfo);
+ if (status)
goto out;
- if ((status = decode_getfh(&xdr, res->fh)) != 0)
+ status = decode_getfh(xdr, res->fh);
+ if (status)
goto out;
- if (decode_getfattr(&xdr, res->fattr, res->server,
+ if (decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
goto out;
- if ((status = decode_restorefh(&xdr)) != 0)
+ status = decode_restorefh(xdr);
+ if (status)
goto out;
- decode_getfattr(&xdr, res->dir_fattr, res->server,
+ decode_getfattr(xdr, res->dir_fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5258,31 +5274,31 @@ out:
/*
* Decode SYMLINK response
*/
-static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
+static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_create_res *res)
{
- return nfs4_xdr_dec_create(rqstp, p, res);
+ return nfs4_xdr_dec_create(rqstp, xdr, res);
}
/*
* Decode GETATTR response
*/
-static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
+static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_getattr_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_getfattr(&xdr, res->fattr, res->server,
+ status = decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5309,24 +5325,22 @@ static void nfs4_xdr_enc_setacl(struct rpc_rqst *req, struct xdr_stream *xdr,
* Decode SETACL response
*/
static int
-nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p,
+nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_setaclres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_setattr(&xdr);
+ status = decode_setattr(xdr);
out:
return status;
}
@@ -5335,24 +5349,22 @@ out:
* Decode GETACL response
*/
static int
-nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p,
+nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
struct nfs_getaclres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_getacl(&xdr, rqstp, &res->acl_len);
+ status = decode_getacl(xdr, rqstp, &res->acl_len);
out:
return status;
@@ -5361,23 +5373,22 @@ out:
/*
* Decode CLOSE response
*/
-static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
+static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_closeres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_close(&xdr, res);
+ status = decode_close(xdr, res);
if (status != 0)
goto out;
/*
@@ -5386,7 +5397,7 @@ static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_clos
* an ESTALE error. Shouldn't be a problem,
* though, since fattr->valid will remain unset.
*/
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5395,36 +5406,35 @@ out:
/*
* Decode OPEN response
*/
-static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
+static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_openres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_savefh(&xdr);
+ status = decode_savefh(xdr);
if (status)
goto out;
- status = decode_open(&xdr, res);
+ status = decode_open(xdr, res);
if (status)
goto out;
- if (decode_getfh(&xdr, &res->fh) != 0)
+ if (decode_getfh(xdr, &res->fh) != 0)
goto out;
- if (decode_getfattr(&xdr, res->f_attr, res->server,
+ if (decode_getfattr(xdr, res->f_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task)) != 0)
goto out;
- if (decode_restorefh(&xdr) != 0)
+ if (decode_restorefh(xdr) != 0)
goto out;
- decode_getfattr(&xdr, res->dir_attr, res->server,
+ decode_getfattr(xdr, res->dir_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5433,20 +5443,20 @@ out:
/*
* Decode OPEN_CONFIRM response
*/
-static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
+static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs_open_confirmres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_open_confirm(&xdr, res);
+ status = decode_open_confirm(xdr, res);
out:
return status;
}
@@ -5454,26 +5464,26 @@ out:
/*
* Decode OPEN response
*/
-static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
+static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs_openres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_open(&xdr, res);
+ status = decode_open(xdr, res);
if (status)
goto out;
- decode_getfattr(&xdr, res->f_attr, res->server,
+ decode_getfattr(xdr, res->f_attr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5482,26 +5492,26 @@ out:
/*
* Decode SETATTR response
*/
-static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
+static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs_setattrres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_setattr(&xdr);
+ status = decode_setattr(xdr);
if (status)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5510,23 +5520,22 @@ out:
/*
* Decode LOCK response
*/
-static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
+static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_lock_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_lock(&xdr, res);
+ status = decode_lock(xdr, res);
out:
return status;
}
@@ -5534,23 +5543,22 @@ out:
/*
* Decode LOCKT response
*/
-static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
+static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_lockt_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_lockt(&xdr, res);
+ status = decode_lockt(xdr, res);
out:
return status;
}
@@ -5558,61 +5566,58 @@ out:
/*
* Decode LOCKU response
*/
-static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
+static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_locku_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_locku(&xdr, res);
+ status = decode_locku(xdr, res);
out:
return status;
}
-static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
+static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr, void *dummy)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_release_lockowner(&xdr);
+ status = decode_release_lockowner(xdr);
return status;
}
/*
* Decode READLINK response
*/
-static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p,
+static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs4_readlink_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_readlink(&xdr, rqstp);
+ status = decode_readlink(xdr, rqstp);
out:
return status;
}
@@ -5620,23 +5625,22 @@ out:
/*
* Decode READDIR response
*/
-static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
+static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs4_readdir_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_readdir(&xdr, rqstp, res);
+ status = decode_readdir(xdr, rqstp, res);
out:
return status;
}
@@ -5644,23 +5648,22 @@ out:
/*
* Decode Read response
*/
-static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
+static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_readres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_read(&xdr, rqstp, res);
+ status = decode_read(xdr, rqstp, res);
if (!status)
status = res->count;
out:
@@ -5670,26 +5673,25 @@ out:
/*
* Decode WRITE response
*/
-static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
+static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_writeres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_write(&xdr, res);
+ status = decode_write(xdr, res);
if (status)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
if (!status)
status = res->count;
@@ -5700,26 +5702,25 @@ out:
/*
* Decode COMMIT response
*/
-static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
+static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ struct nfs_writeres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_commit(&xdr, res);
+ status = decode_commit(xdr, res);
if (status)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5728,85 +5729,80 @@ out:
/*
* Decode FSINFO response
*/
-static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
+static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs4_fsinfo_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_sequence(&xdr, &res->seq_res, req);
+ status = decode_sequence(xdr, &res->seq_res, req);
if (!status)
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (!status)
- status = decode_fsinfo(&xdr, res->fsinfo);
+ status = decode_fsinfo(xdr, res->fsinfo);
return status;
}
/*
* Decode PATHCONF response
*/
-static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
+static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs4_pathconf_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_sequence(&xdr, &res->seq_res, req);
+ status = decode_sequence(xdr, &res->seq_res, req);
if (!status)
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (!status)
- status = decode_pathconf(&xdr, res->pathconf);
+ status = decode_pathconf(xdr, res->pathconf);
return status;
}
/*
* Decode STATFS response
*/
-static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
+static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, struct xdr_stream *xdr,
struct nfs4_statfs_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_sequence(&xdr, &res->seq_res, req);
+ status = decode_sequence(xdr, &res->seq_res, req);
if (!status)
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (!status)
- status = decode_statfs(&xdr, res->fsstat);
+ status = decode_statfs(xdr, res->fsstat);
return status;
}
/*
* Decode GETATTR_BITMAP response
*/
-static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
+static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_server_caps_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, req);
+ status = decode_sequence(xdr, &res->seq_res, req);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- status = decode_server_caps(&xdr, res);
+ status = decode_server_caps(xdr, res);
out:
return status;
}
@@ -5814,79 +5810,77 @@ out:
/*
* Decode RENEW response
*/
-static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
+static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, struct xdr_stream *xdr,
+ void *__unused)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_renew(&xdr);
+ status = decode_renew(xdr);
return status;
}
/*
* Decode SETCLIENTID response
*/
-static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
- struct nfs4_setclientid_res *res)
+static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs4_setclientid_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_setclientid(&xdr, res);
+ status = decode_setclientid(xdr, res);
return status;
}
/*
* Decode SETCLIENTID_CONFIRM response
*/
-static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
+static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
+ struct nfs_fsinfo *fsinfo)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_setclientid_confirm(&xdr);
+ status = decode_setclientid_confirm(xdr);
if (!status)
- status = decode_putrootfh(&xdr);
+ status = decode_putrootfh(xdr);
if (!status)
- status = decode_fsinfo(&xdr, fsinfo);
+ status = decode_fsinfo(xdr, fsinfo);
return status;
}
/*
* Decode DELEGRETURN response
*/
-static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
+static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ struct nfs4_delegreturnres *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status != 0)
goto out;
- status = decode_delegreturn(&xdr);
+ status = decode_delegreturn(xdr);
if (status != 0)
goto out;
- decode_getfattr(&xdr, res->fattr, res->server,
+ decode_getfattr(xdr, res->fattr, res->server,
!RPC_IS_ASYNC(rqstp->rq_task));
out:
return status;
@@ -5895,26 +5889,27 @@ out:
/*
* Decode FS_LOCATIONS response
*/
-static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
+static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req,
+ struct xdr_stream *xdr,
struct nfs4_fs_locations_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, req);
+ status = decode_sequence(xdr, &res->seq_res, req);
if (status)
goto out;
- if ((status = decode_putfh(&xdr)) != 0)
+ status = decode_putfh(xdr);
+ if (status)
goto out;
- if ((status = decode_lookup(&xdr)) != 0)
+ status = decode_lookup(xdr);
+ if (status)
goto out;
- xdr_enter_page(&xdr, PAGE_SIZE);
- status = decode_getfattr(&xdr, &res->fs_locations->fattr,
+ xdr_enter_page(xdr, PAGE_SIZE);
+ status = decode_getfattr(xdr, &res->fs_locations->fattr,
res->fs_locations->server,
!RPC_IS_ASYNC(req->rq_task));
out:
@@ -5925,129 +5920,122 @@ out:
/*
* Decode EXCHANGE_ID response
*/
-static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
void *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_exchange_id(&xdr, res);
+ status = decode_exchange_id(xdr, res);
return status;
}
/*
* Decode CREATE_SESSION response
*/
-static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs41_create_session_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_create_session(&xdr, res);
+ status = decode_create_session(xdr, res);
return status;
}
/*
* Decode DESTROY_SESSION response
*/
-static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
- void *dummy)
+static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
+ void *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_destroy_session(&xdr, dummy);
+ status = decode_destroy_session(xdr, res);
return status;
}
/*
* Decode SEQUENCE response
*/
-static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs4_sequence_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_sequence(&xdr, res, rqstp);
+ status = decode_sequence(xdr, res, rqstp);
return status;
}
/*
* Decode GET_LEASE_TIME response
*/
-static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs4_get_lease_time_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_sequence(&xdr, &res->lr_seq_res, rqstp);
+ status = decode_sequence(xdr, &res->lr_seq_res, rqstp);
if (!status)
- status = decode_putrootfh(&xdr);
+ status = decode_putrootfh(xdr);
if (!status)
- status = decode_fsinfo(&xdr, res->lr_fsinfo);
+ status = decode_fsinfo(xdr, res->lr_fsinfo);
return status;
}
/*
* Decode RECLAIM_COMPLETE response
*/
-static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs41_reclaim_complete_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (!status)
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (!status)
- status = decode_reclaim_complete(&xdr, (void *)NULL);
+ status = decode_reclaim_complete(xdr, (void *)NULL);
return status;
}
/*
* Decode GETDEVINFO response
*/
-static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs4_getdeviceinfo_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status != 0)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status != 0)
goto out;
- status = decode_getdeviceinfo(&xdr, res->pdev);
+ status = decode_getdeviceinfo(xdr, res->pdev);
out:
return status;
}
@@ -6055,24 +6043,23 @@ out:
/*
* Decode LAYOUTGET response
*/
-static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, uint32_t *p,
+static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfs4_layoutget_res *res)
{
- struct xdr_stream xdr;
struct compound_hdr hdr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_compound_hdr(&xdr, &hdr);
+ status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
- status = decode_sequence(&xdr, &res->seq_res, rqstp);
+ status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
- status = decode_putfh(&xdr);
+ status = decode_putfh(xdr);
if (status)
goto out;
- status = decode_layoutget(&xdr, rqstp, res);
+ status = decode_layoutget(xdr, rqstp, res);
out:
return status;
}
@@ -6236,7 +6223,7 @@ nfs4_stat_to_errno(int stat)
[NFSPROC4_CLNT_##proc] = { \
.p_proc = NFSPROC4_COMPOUND, \
.p_encode = (kxdreproc_t)nfs4_xdr_##argtype, \
- .p_decode = (kxdrproc_t)nfs4_xdr_##restype, \
+ .p_decode = (kxdrdproc_t)nfs4_xdr_##restype, \
.p_arglen = NFS4_##argtype##_sz, \
.p_replen = NFS4_##restype##_sz, \
.p_statidx = NFSPROC4_CLNT_##proc, \
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index c363efd..21a63da 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -533,7 +533,8 @@ static void nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, struct xdr_stream *xdr,
* Protocol".
*/
-static int nfs4_xdr_dec_cb_null(struct rpc_rqst *req, __be32 *p, void *__unused)
+static int nfs4_xdr_dec_cb_null(struct rpc_rqst *req, struct xdr_stream *xdr,
+ void *__unused)
{
return 0;
}
@@ -541,26 +542,25 @@ static int nfs4_xdr_dec_cb_null(struct rpc_rqst *req, __be32 *p, void *__unused)
/*
* 20.2. Operation 4: CB_RECALL - Recall a Delegation
*/
-static int nfs4_xdr_dec_cb_recall(struct rpc_rqst *rqstp, __be32 *p,
+static int nfs4_xdr_dec_cb_recall(struct rpc_rqst *rqstp,
+ struct xdr_stream *xdr,
struct nfsd4_callback *cb)
{
- struct xdr_stream xdr;
struct nfs4_cb_compound_hdr hdr;
enum nfsstat4 nfserr;
int status;
- xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
- status = decode_cb_compound4res(&xdr, &hdr);
+ status = decode_cb_compound4res(xdr, &hdr);
if (unlikely(status))
goto out;
if (cb != NULL) {
- status = decode_cb_sequence4res(&xdr, cb);
+ status = decode_cb_sequence4res(xdr, cb);
if (unlikely(status))
goto out;
}
- status = decode_cb_op_status(&xdr, OP_CB_RECALL, &nfserr);
+ status = decode_cb_op_status(xdr, OP_CB_RECALL, &nfserr);
if (unlikely(status))
goto out;
if (unlikely(nfserr != NFS4_OK))
@@ -578,7 +578,7 @@ out_default:
[NFSPROC4_CLNT_##proc] = { \
.p_proc = NFSPROC4_CB_##call, \
.p_encode = (kxdreproc_t)nfs4_xdr_enc_##argtype, \
- .p_decode = (kxdrproc_t)nfs4_xdr_dec_##restype, \
+ .p_decode = (kxdrdproc_t)nfs4_xdr_dec_##restype, \
.p_arglen = NFS4_enc_##argtype##_sz, \
.p_replen = NFS4_dec_##restype##_sz, \
.p_statidx = NFSPROC4_CB_##call, \
diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index d88cffb..8521067 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -112,7 +112,7 @@ struct rpc_credops {
__be32 * (*crvalidate)(struct rpc_task *, __be32 *);
int (*crwrap_req)(struct rpc_task *, kxdreproc_t,
void *, __be32 *, void *);
- int (*crunwrap_resp)(struct rpc_task *, kxdrproc_t,
+ int (*crunwrap_resp)(struct rpc_task *, kxdrdproc_t,
void *, __be32 *, void *);
};
@@ -140,7 +140,7 @@ void put_rpccred(struct rpc_cred *);
__be32 * rpcauth_marshcred(struct rpc_task *, __be32 *);
__be32 * rpcauth_checkverf(struct rpc_task *, __be32 *);
int rpcauth_wrap_req(struct rpc_task *task, kxdreproc_t encode, void *rqstp, __be32 *data, void *obj);
-int rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp, __be32 *data, void *obj);
+int rpcauth_unwrap_resp(struct rpc_task *task, kxdrdproc_t decode, void *rqstp, __be32 *data, void *obj);
int rpcauth_refreshcred(struct rpc_task *);
void rpcauth_invalcred(struct rpc_task *);
int rpcauth_uptodatecred(struct rpc_task *);
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 7b19c4e..ef9476a 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -90,7 +90,7 @@ struct rpc_version {
struct rpc_procinfo {
u32 p_proc; /* RPC procedure number */
kxdreproc_t p_encode; /* XDR encode function */
- kxdrproc_t p_decode; /* XDR decode function */
+ kxdrdproc_t p_decode; /* XDR decode function */
unsigned int p_arglen; /* argument hdr length (u32) */
unsigned int p_replen; /* reply hdr length (u32) */
unsigned int p_count; /* call count */
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index a21cf53..9a21e81 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -204,9 +204,10 @@ struct xdr_stream {
};
/*
- * This is the xdr_stream style generic XDR function.
+ * These are the xdr_stream style generic XDR encode and decode functions.
*/
typedef void (*kxdreproc_t)(void *rqstp, struct xdr_stream *xdr, void *obj);
+typedef int (*kxdrdproc_t)(void *rqstp, struct xdr_stream *xdr, void *obj);
extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, __be32 *p);
extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes);
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 651c9da..67e3127 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -587,8 +587,18 @@ rpcauth_wrap_req(struct rpc_task *task, kxdreproc_t encode, void *rqstp,
return 0;
}
+static int
+rpcauth_unwrap_req_decode(kxdrdproc_t decode, struct rpc_rqst *rqstp,
+ __be32 *data, void *obj)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, data);
+ return decode(rqstp, &xdr, obj);
+}
+
int
-rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp,
+rpcauth_unwrap_resp(struct rpc_task *task, kxdrdproc_t decode, void *rqstp,
__be32 *data, void *obj)
{
struct rpc_cred *cred = task->tk_rqstp->rq_cred;
@@ -599,7 +609,7 @@ rpcauth_unwrap_resp(struct rpc_task *task, kxdrproc_t decode, void *rqstp,
return cred->cr_ops->crunwrap_resp(task, decode, rqstp,
data, obj);
/* By default, we decode the arguments normally. */
- return decode(rqstp, data, obj);
+ return rpcauth_unwrap_req_decode(decode, rqstp, data, obj);
}
int
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 42b46f9..45dbf15 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -1503,10 +1503,19 @@ gss_unwrap_resp_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx,
return 0;
}
+static int
+gss_unwrap_req_decode(kxdrdproc_t decode, struct rpc_rqst *rqstp,
+ __be32 *p, void *obj)
+{
+ struct xdr_stream xdr;
+
+ xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
+ return decode(rqstp, &xdr, obj);
+}
static int
gss_unwrap_resp(struct rpc_task *task,
- kxdrproc_t decode, void *rqstp, __be32 *p, void *obj)
+ kxdrdproc_t decode, void *rqstp, __be32 *p, void *obj)
{
struct rpc_cred *cred = task->tk_rqstp->rq_cred;
struct gss_cred *gss_cred = container_of(cred, struct gss_cred,
@@ -1537,7 +1546,7 @@ gss_unwrap_resp(struct rpc_task *task,
cred->cr_auth->au_rslack = cred->cr_auth->au_verfsize + (p - savedp)
+ (savedlen - head->iov_len);
out_decode:
- status = decode(rqstp, p, obj);
+ status = gss_unwrap_req_decode(decode, rqstp, p, obj);
out:
gss_put_ctx(ctx);
dprintk("RPC: %5u gss_unwrap_resp returning %d\n", task->tk_pid,
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index d446a32..4e8210d 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1535,7 +1535,7 @@ call_decode(struct rpc_task *task)
{
struct rpc_clnt *clnt = task->tk_client;
struct rpc_rqst *req = task->tk_rqstp;
- kxdrproc_t decode = task->tk_msg.rpc_proc->p_decode;
+ kxdrdproc_t decode = task->tk_msg.rpc_proc->p_decode;
__be32 *p;
dprintk("RPC: %5u call_decode (status %d)\n",
@@ -1780,7 +1780,7 @@ static void rpcproc_encode_null(void *rqstp, struct xdr_stream *xdr, void *obj)
{
}
-static int rpcproc_decode_null(void *rqstp, __be32 *data, void *obj)
+static int rpcproc_decode_null(void *rqstp, struct xdr_stream *xdr, void *obj)
{
return 0;
}
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index 63912a1..c652e4c 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -706,18 +706,16 @@ static void rpcb_enc_mapping(struct rpc_rqst *req, struct xdr_stream *xdr,
*p = cpu_to_be32(rpcb->r_port);
}
-static int rpcb_dec_getport(struct rpc_rqst *req, __be32 *p,
+static int rpcb_dec_getport(struct rpc_rqst *req, struct xdr_stream *xdr,
struct rpcbind_args *rpcb)
{
struct rpc_task *task = req->rq_task;
- struct xdr_stream xdr;
unsigned long port;
-
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ __be32 *p;
rpcb->r_port = 0;
- p = xdr_inline_decode(&xdr, 4);
+ p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return -EIO;
@@ -731,20 +729,18 @@ static int rpcb_dec_getport(struct rpc_rqst *req, __be32 *p,
return 0;
}
-static int rpcb_dec_set(struct rpc_rqst *req, __be32 *p,
+static int rpcb_dec_set(struct rpc_rqst *req, struct xdr_stream *xdr,
unsigned int *boolp)
{
struct rpc_task *task = req->rq_task;
- struct xdr_stream xdr;
-
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
+ __be32 *p;
- p = xdr_inline_decode(&xdr, 4);
+ p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return -EIO;
*boolp = 0;
- if (*p)
+ if (*p != xdr_zero)
*boolp = 1;
dprintk("RPC: %5u RPCB_%s call %s\n",
@@ -785,20 +781,18 @@ static void rpcb_enc_getaddr(struct rpc_rqst *req, struct xdr_stream *xdr,
encode_rpcb_string(xdr, rpcb->r_owner, RPCB_MAXOWNERLEN);
}
-static int rpcb_dec_getaddr(struct rpc_rqst *req, __be32 *p,
+static int rpcb_dec_getaddr(struct rpc_rqst *req, struct xdr_stream *xdr,
struct rpcbind_args *rpcb)
{
struct sockaddr_storage address;
struct sockaddr *sap = (struct sockaddr *)&address;
struct rpc_task *task = req->rq_task;
- struct xdr_stream xdr;
+ __be32 *p;
u32 len;
rpcb->r_port = 0;
- xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
-
- p = xdr_inline_decode(&xdr, 4);
+ p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
goto out_fail;
len = be32_to_cpup(p);
@@ -816,7 +810,7 @@ static int rpcb_dec_getaddr(struct rpc_rqst *req, __be32 *p,
if (unlikely(len > RPCBIND_MAXUADDRLEN))
goto out_fail;
- p = xdr_inline_decode(&xdr, len);
+ p = xdr_inline_decode(xdr, len);
if (unlikely(p == NULL))
goto out_fail;
dprintk("RPC: %5u RPCB_%s reply: %s\n", task->tk_pid,
@@ -843,7 +837,7 @@ static struct rpc_procinfo rpcb_procedures2[] = {
[RPCBPROC_SET] = {
.p_proc = RPCBPROC_SET,
.p_encode = (kxdreproc_t)rpcb_enc_mapping,
- .p_decode = (kxdrproc_t)rpcb_dec_set,
+ .p_decode = (kxdrdproc_t)rpcb_dec_set,
.p_arglen = RPCB_mappingargs_sz,
.p_replen = RPCB_setres_sz,
.p_statidx = RPCBPROC_SET,
@@ -853,7 +847,7 @@ static struct rpc_procinfo rpcb_procedures2[] = {
[RPCBPROC_UNSET] = {
.p_proc = RPCBPROC_UNSET,
.p_encode = (kxdreproc_t)rpcb_enc_mapping,
- .p_decode = (kxdrproc_t)rpcb_dec_set,
+ .p_decode = (kxdrdproc_t)rpcb_dec_set,
.p_arglen = RPCB_mappingargs_sz,
.p_replen = RPCB_setres_sz,
.p_statidx = RPCBPROC_UNSET,
@@ -863,7 +857,7 @@ static struct rpc_procinfo rpcb_procedures2[] = {
[RPCBPROC_GETPORT] = {
.p_proc = RPCBPROC_GETPORT,
.p_encode = (kxdreproc_t)rpcb_enc_mapping,
- .p_decode = (kxdrproc_t)rpcb_dec_getport,
+ .p_decode = (kxdrdproc_t)rpcb_dec_getport,
.p_arglen = RPCB_mappingargs_sz,
.p_replen = RPCB_getportres_sz,
.p_statidx = RPCBPROC_GETPORT,
@@ -876,7 +870,7 @@ static struct rpc_procinfo rpcb_procedures3[] = {
[RPCBPROC_SET] = {
.p_proc = RPCBPROC_SET,
.p_encode = (kxdreproc_t)rpcb_enc_getaddr,
- .p_decode = (kxdrproc_t)rpcb_dec_set,
+ .p_decode = (kxdrdproc_t)rpcb_dec_set,
.p_arglen = RPCB_getaddrargs_sz,
.p_replen = RPCB_setres_sz,
.p_statidx = RPCBPROC_SET,
@@ -886,7 +880,7 @@ static struct rpc_procinfo rpcb_procedures3[] = {
[RPCBPROC_UNSET] = {
.p_proc = RPCBPROC_UNSET,
.p_encode = (kxdreproc_t)rpcb_enc_getaddr,
- .p_decode = (kxdrproc_t)rpcb_dec_set,
+ .p_decode = (kxdrdproc_t)rpcb_dec_set,
.p_arglen = RPCB_getaddrargs_sz,
.p_replen = RPCB_setres_sz,
.p_statidx = RPCBPROC_UNSET,
@@ -896,7 +890,7 @@ static struct rpc_procinfo rpcb_procedures3[] = {
[RPCBPROC_GETADDR] = {
.p_proc = RPCBPROC_GETADDR,
.p_encode = (kxdreproc_t)rpcb_enc_getaddr,
- .p_decode = (kxdrproc_t)rpcb_dec_getaddr,
+ .p_decode = (kxdrdproc_t)rpcb_dec_getaddr,
.p_arglen = RPCB_getaddrargs_sz,
.p_replen = RPCB_getaddrres_sz,
.p_statidx = RPCBPROC_GETADDR,
@@ -909,7 +903,7 @@ static struct rpc_procinfo rpcb_procedures4[] = {
[RPCBPROC_SET] = {
.p_proc = RPCBPROC_SET,
.p_encode = (kxdreproc_t)rpcb_enc_getaddr,
- .p_decode = (kxdrproc_t)rpcb_dec_set,
+ .p_decode = (kxdrdproc_t)rpcb_dec_set,
.p_arglen = RPCB_getaddrargs_sz,
.p_replen = RPCB_setres_sz,
.p_statidx = RPCBPROC_SET,
@@ -919,7 +913,7 @@ static struct rpc_procinfo rpcb_procedures4[] = {
[RPCBPROC_UNSET] = {
.p_proc = RPCBPROC_UNSET,
.p_encode = (kxdreproc_t)rpcb_enc_getaddr,
- .p_decode = (kxdrproc_t)rpcb_dec_set,
+ .p_decode = (kxdrdproc_t)rpcb_dec_set,
.p_arglen = RPCB_getaddrargs_sz,
.p_replen = RPCB_setres_sz,
.p_statidx = RPCBPROC_UNSET,
@@ -929,7 +923,7 @@ static struct rpc_procinfo rpcb_procedures4[] = {
[RPCBPROC_GETADDR] = {
.p_proc = RPCBPROC_GETADDR,
.p_encode = (kxdreproc_t)rpcb_enc_getaddr,
- .p_decode = (kxdrproc_t)rpcb_dec_getaddr,
+ .p_decode = (kxdrdproc_t)rpcb_dec_getaddr,
.p_arglen = RPCB_getaddrargs_sz,
.p_replen = RPCB_getaddrres_sz,
.p_statidx = RPCBPROC_GETADDR,
^ permalink raw reply related [flat|nested] 53+ messages in thread* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-14 14:54 [PATCH 00/31] NFS XDR clean up for 2.6.38 Chuck Lever
` (30 preceding siblings ...)
2010-12-14 14:59 ` [PATCH 31/31] SUNRPC: New xdr_streams XDR decoder API Chuck Lever
@ 2010-12-16 19:14 ` Steve Dickson
2010-12-16 20:04 ` Chuck Lever
2010-12-16 23:05 ` Christoph Hellwig
31 siblings, 2 replies; 53+ messages in thread
From: Steve Dickson @ 2010-12-16 19:14 UTC (permalink / raw)
To: trond.myklebust; +Cc: linux-nfs
Hello,
I was wondering if it would be possible hold off on committing major
cleans ups like this one (and the RFC: Split nlm_host cache series)
until pNFS wave3 is committed into either Trond's tree and/or in the
mainline kernel.
I realize this is a huge request to make, something we've never done
before. But talking with the powers to be on this end, include Ric
Wheeler, accepting these types of patches before the pNFS bits
settle down will make close to impossible for there to be any
meaningful pNFS support in the RHEL 6 kernels. We would have
to push the support off to RHEL 7.
The reasoning is this, which I do agree with, these types of
patches, although probably needed, do not added any new features
or fix any outstanding bugs. More likely than not (for a time) they will
add some instability due to the lack of usage and testing. These type of
changes are much too large for even our QE group to test and verify and
obviously instability is the last thing we can interject into an
on going enterprise product stream.
Again, I realize what we are asking and how big this request
really is. Its just that we've come so far and are pretty close
(IMHO) to have some meaningful pNFS support in RHEL 6, I
figured I'd take a shoot and ask...
steved.
On 12/14/2010 09:54 AM, Chuck Lever wrote:
> Trond-
>
> As requested, here is my latest revision of the XDR patchset for
> 2.6.38.
>
> This converts NFSv2 and v3, all versions of NLM, and the server's
> NFSv4 callback client. It updates the XDR code for rpcbind, NSM, and
> MNT as well.
>
> All encoders and decoders now use xdr_streams. All encoders now BUG
> on any error and return void.
>
> As a bonus, this series converts the whole kit and kaboodle to a new
> calling sequence. The RPC client's generic encode and decode routines
> now invoke xdr_init_{en,de}code before calling the specific XDR
> routines. The xdr_init_{en,de}code call sites are thus removed from
> all specific XDR routines in the kernel.
>
> ---
>
> Chuck Lever (31):
> SUNRPC: New xdr_streams XDR decoder API
> SUNRPC: New xdr_streams XDR encoder API
> SUNRPC: Determine value of "nrprocs" automatically
> SUNRPC: Avoid return code checking in rpcbind XDR encoder functions
> NFS: Remove unused UMNT response data structure
> NFS: Avoid return code checking in mount XDR encoder functions
> NSM: Avoid return code checking in NSM XDR encoder functions
> NFS: Squelch compiler warning in decode_getdeviceinfo()
> NFS: Simplify ->decode_dirent() calling sequence
> NFS: Fix hdrlen calculation in NFSv4's decode_read()
> lockd: Move nlmdbg_cookie2a() to svclock.c
> NFS: Repair whitespace damage in NFS PROC macro
> NFSD: Update XDR decoders in NFSv4 callback client
> NFSD: Update XDR encoders in NFSv4 callback client
> lockd: Introduce new-style XDR functions for NLMv4
> NFS: Move and update xdr_decode_foo() functions that we're keeping
> NFS: Remove unused old NFSv3 decoder functions
> NFS: Switch in new NFSv3 decoder functions
> NFS: Introduce new-style XDR decoding functions for NFSv2
> NFS: Update xdr_encode_foo() functions that we're keeping
> NFS: Remove unused old NFSv3 encoder functions
> NFS: Replace old NFSv3 encoder functions with xdr_stream-based ones
> NFS: Introduce new-style XDR encoding functions for NFSv3
> lockd: Introduce new-style XDR functions for NLMv3
> NFS: Move and update xdr_decode_foo() functions that we're keeping
> NFS: Replace old NFSv2 decoder functions with xdr_stream-based ones
> NFS: Introduce new-style XDR decoding functions for NFSv2
> NFS: Use the "nfs_stat" enum for nfs_stat_to_errno()'s argument
> NFS: Update xdr_encode_foo() functions that we're keeping
> NFS: Remove old NFSv2 encoder functions
> NFS: Introduce new-style XDR encoding functions for NFSv2
>
>
> fs/lockd/Makefile | 6
> fs/lockd/clnt4xdr.c | 605 ++++++++
> fs/lockd/clntxdr.c | 627 +++++++++
> fs/lockd/mon.c | 110 +-
> fs/lockd/svclock.c | 30
> fs/lockd/xdr.c | 287 ----
> fs/lockd/xdr4.c | 255 ----
> fs/nfs/dir.c | 15
> fs/nfs/internal.h | 11
> fs/nfs/mount_clnt.c | 81 -
> fs/nfs/nfs2xdr.c | 1297 ++++++++++++------
> fs/nfs/nfs3xdr.c | 2892 +++++++++++++++++++++++++++++-----------
> fs/nfs/nfs4_fs.h | 1
> fs/nfs/nfs4xdr.c | 1401 +++++++++----------
> fs/nfs/proc.c | 2
> fs/nfsd/nfs4callback.c | 690 ++++++----
> include/linux/lockd/debug.h | 10
> include/linux/nfs3.h | 3
> include/linux/nfs_xdr.h | 3
> include/linux/sunrpc/auth.h | 8
> include/linux/sunrpc/clnt.h | 4
> include/linux/sunrpc/xdr.h | 10
> net/sunrpc/auth.c | 28
> net/sunrpc/auth_gss/auth_gss.c | 44 -
> net/sunrpc/clnt.c | 9
> net/sunrpc/rpcb_clnt.c | 147 +-
> 26 files changed, 5529 insertions(+), 3047 deletions(-)
> create mode 100644 fs/lockd/clnt4xdr.c
> create mode 100644 fs/lockd/clntxdr.c
>
^ permalink raw reply [flat|nested] 53+ messages in thread* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-16 19:14 ` [PATCH 00/31] NFS XDR clean up for 2.6.38 Steve Dickson
@ 2010-12-16 20:04 ` Chuck Lever
2010-12-16 20:21 ` Ric Wheeler
2010-12-16 20:43 ` Steve Dickson
2010-12-16 23:05 ` Christoph Hellwig
1 sibling, 2 replies; 53+ messages in thread
From: Chuck Lever @ 2010-12-16 20:04 UTC (permalink / raw)
To: Steve Dickson; +Cc: trond.myklebust, linux-nfs
On Dec 16, 2010, at 2:14 PM, Steve Dickson wrote:
> Hello,
>
> I was wondering if it would be possible hold off on committing major
> cleans ups like this one (and the RFC: Split nlm_host cache series)
> until pNFS wave3 is committed into either Trond's tree and/or in the
> mainline kernel.
>
> I realize this is a huge request to make, something we've never done
> before. But talking with the powers to be on this end, include Ric
> Wheeler, accepting these types of patches before the pNFS bits
> settle down will make close to impossible for there to be any
> meaningful pNFS support in the RHEL 6 kernels. We would have
> to push the support off to RHEL 7.
>
> The reasoning is this, which I do agree with, these types of
> patches, although probably needed, do not added any new features
> or fix any outstanding bugs.
The XDR series does add a new feature, FWIW: it adds buffer overflow protection to the client's reply processing logic. Says so right in the patch descriptions.
> More likely than not (for a time) they will
> add some instability due to the lack of usage and testing. These type of
> changes are much too large for even our QE group to test and verify and
> obviously instability is the last thing we can interject into an
> on going enterprise product stream.
The only NFSv4-related changes in this series are limited to refactoring. No behavior changes are made in the NFSv4 code. The bulk of the changes effect only NFSv2 and NFSv3, and will have no impact on pNFS (other than a minor API change).
XDR is straightforward and well understood. If anything is broken by these patches, I expect it will be exposed quickly.
The NLM patches also have nothing to do with pNFS, AFAICT, and can likely be skipped for RHEL 6.
> Again, I realize what we are asking and how big this request
> really is. Its just that we've come so far and are pretty close
> (IMHO) to have some meaningful pNFS support in RHEL 6, I
> figured I'd take a shoot and ask...
I don't think these are as world-bending as you believe. I'm happy to discuss the actual changes with Ric.
> steved.
>
> On 12/14/2010 09:54 AM, Chuck Lever wrote:
>> Trond-
>>
>> As requested, here is my latest revision of the XDR patchset for
>> 2.6.38.
>>
>> This converts NFSv2 and v3, all versions of NLM, and the server's
>> NFSv4 callback client. It updates the XDR code for rpcbind, NSM, and
>> MNT as well.
>>
>> All encoders and decoders now use xdr_streams. All encoders now BUG
>> on any error and return void.
>>
>> As a bonus, this series converts the whole kit and kaboodle to a new
>> calling sequence. The RPC client's generic encode and decode routines
>> now invoke xdr_init_{en,de}code before calling the specific XDR
>> routines. The xdr_init_{en,de}code call sites are thus removed from
>> all specific XDR routines in the kernel.
>>
>> ---
>>
>> Chuck Lever (31):
>> SUNRPC: New xdr_streams XDR decoder API
>> SUNRPC: New xdr_streams XDR encoder API
>> SUNRPC: Determine value of "nrprocs" automatically
>> SUNRPC: Avoid return code checking in rpcbind XDR encoder functions
>> NFS: Remove unused UMNT response data structure
>> NFS: Avoid return code checking in mount XDR encoder functions
>> NSM: Avoid return code checking in NSM XDR encoder functions
>> NFS: Squelch compiler warning in decode_getdeviceinfo()
>> NFS: Simplify ->decode_dirent() calling sequence
>> NFS: Fix hdrlen calculation in NFSv4's decode_read()
>> lockd: Move nlmdbg_cookie2a() to svclock.c
>> NFS: Repair whitespace damage in NFS PROC macro
>> NFSD: Update XDR decoders in NFSv4 callback client
>> NFSD: Update XDR encoders in NFSv4 callback client
>> lockd: Introduce new-style XDR functions for NLMv4
>> NFS: Move and update xdr_decode_foo() functions that we're keeping
>> NFS: Remove unused old NFSv3 decoder functions
>> NFS: Switch in new NFSv3 decoder functions
>> NFS: Introduce new-style XDR decoding functions for NFSv2
>> NFS: Update xdr_encode_foo() functions that we're keeping
>> NFS: Remove unused old NFSv3 encoder functions
>> NFS: Replace old NFSv3 encoder functions with xdr_stream-based ones
>> NFS: Introduce new-style XDR encoding functions for NFSv3
>> lockd: Introduce new-style XDR functions for NLMv3
>> NFS: Move and update xdr_decode_foo() functions that we're keeping
>> NFS: Replace old NFSv2 decoder functions with xdr_stream-based ones
>> NFS: Introduce new-style XDR decoding functions for NFSv2
>> NFS: Use the "nfs_stat" enum for nfs_stat_to_errno()'s argument
>> NFS: Update xdr_encode_foo() functions that we're keeping
>> NFS: Remove old NFSv2 encoder functions
>> NFS: Introduce new-style XDR encoding functions for NFSv2
>>
>>
>> fs/lockd/Makefile | 6
>> fs/lockd/clnt4xdr.c | 605 ++++++++
>> fs/lockd/clntxdr.c | 627 +++++++++
>> fs/lockd/mon.c | 110 +-
>> fs/lockd/svclock.c | 30
>> fs/lockd/xdr.c | 287 ----
>> fs/lockd/xdr4.c | 255 ----
>> fs/nfs/dir.c | 15
>> fs/nfs/internal.h | 11
>> fs/nfs/mount_clnt.c | 81 -
>> fs/nfs/nfs2xdr.c | 1297 ++++++++++++------
>> fs/nfs/nfs3xdr.c | 2892 +++++++++++++++++++++++++++++-----------
>> fs/nfs/nfs4_fs.h | 1
>> fs/nfs/nfs4xdr.c | 1401 +++++++++----------
>> fs/nfs/proc.c | 2
>> fs/nfsd/nfs4callback.c | 690 ++++++----
>> include/linux/lockd/debug.h | 10
>> include/linux/nfs3.h | 3
>> include/linux/nfs_xdr.h | 3
>> include/linux/sunrpc/auth.h | 8
>> include/linux/sunrpc/clnt.h | 4
>> include/linux/sunrpc/xdr.h | 10
>> net/sunrpc/auth.c | 28
>> net/sunrpc/auth_gss/auth_gss.c | 44 -
>> net/sunrpc/clnt.c | 9
>> net/sunrpc/rpcb_clnt.c | 147 +-
>> 26 files changed, 5529 insertions(+), 3047 deletions(-)
>> create mode 100644 fs/lockd/clnt4xdr.c
>> create mode 100644 fs/lockd/clntxdr.c
>>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
Chuck Lever
chuck[dot]lever[at]oracle[dot]com
^ permalink raw reply [flat|nested] 53+ messages in thread* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-16 20:04 ` Chuck Lever
@ 2010-12-16 20:21 ` Ric Wheeler
2010-12-16 21:04 ` Chuck Lever
2010-12-16 20:43 ` Steve Dickson
1 sibling, 1 reply; 53+ messages in thread
From: Ric Wheeler @ 2010-12-16 20:21 UTC (permalink / raw)
To: Chuck Lever; +Cc: Steve Dickson, trond.myklebust, linux-nfs
On 12/16/2010 03:04 PM, Chuck Lever wrote:
> On Dec 16, 2010, at 2:14 PM, Steve Dickson wrote:
>
>> Hello,
>>
>> I was wondering if it would be possible hold off on committing major
>> cleans ups like this one (and the RFC: Split nlm_host cache series)
>> until pNFS wave3 is committed into either Trond's tree and/or in the
>> mainline kernel.
>>
>> I realize this is a huge request to make, something we've never done
>> before. But talking with the powers to be on this end, include Ric
>> Wheeler, accepting these types of patches before the pNFS bits
>> settle down will make close to impossible for there to be any
>> meaningful pNFS support in the RHEL 6 kernels. We would have
>> to push the support off to RHEL 7.
>>
>> The reasoning is this, which I do agree with, these types of
>> patches, although probably needed, do not added any new features
>> or fix any outstanding bugs.
> The XDR series does add a new feature, FWIW: it adds buffer overflow protection to the client's reply processing logic. Says so right in the patch descriptions.
Hi Chuck,
My concern is one of testing one massive set of changes at a time and trying to
get those stable (and through QA) before code refactoring. We have been focused
on the pNFS bits for what feels like eons and they seem to be getting *really*
close now :)
I certainly do not object to this work, just want to get the pNFS flood absorbed
and processed first.
The risk of putting it all in the hopper together is that testing and debugging
(in upstream, non-vendor distros and vendor distros) gets harder to qa, debug
if/when issues arise and get stable.
It would certainly help us to stage pulling the XDR clean up work until after we
settle the various pNFS "waves" of change, but I can also understand why you
would prefer to push them in sooner.
Thanks!
Ric
>> More likely than not (for a time) they will
>> add some instability due to the lack of usage and testing. These type of
>> changes are much too large for even our QE group to test and verify and
>> obviously instability is the last thing we can interject into an
>> on going enterprise product stream.
> The only NFSv4-related changes in this series are limited to refactoring. No behavior changes are made in the NFSv4 code. The bulk of the changes effect only NFSv2 and NFSv3, and will have no impact on pNFS (other than a minor API change).
>
> XDR is straightforward and well understood. If anything is broken by these patches, I expect it will be exposed quickly.
>
> The NLM patches also have nothing to do with pNFS, AFAICT, and can likely be skipped for RHEL 6.
>
>> Again, I realize what we are asking and how big this request
>> really is. Its just that we've come so far and are pretty close
>> (IMHO) to have some meaningful pNFS support in RHEL 6, I
>> figured I'd take a shoot and ask...
> I don't think these are as world-bending as you believe. I'm happy to discuss the actual changes with Ric.
>
>> steved.
>>
>> On 12/14/2010 09:54 AM, Chuck Lever wrote:
>>> Trond-
>>>
>>> As requested, here is my latest revision of the XDR patchset for
>>> 2.6.38.
>>>
>>> This converts NFSv2 and v3, all versions of NLM, and the server's
>>> NFSv4 callback client. It updates the XDR code for rpcbind, NSM, and
>>> MNT as well.
>>>
>>> All encoders and decoders now use xdr_streams. All encoders now BUG
>>> on any error and return void.
>>>
>>> As a bonus, this series converts the whole kit and kaboodle to a new
>>> calling sequence. The RPC client's generic encode and decode routines
>>> now invoke xdr_init_{en,de}code before calling the specific XDR
>>> routines. The xdr_init_{en,de}code call sites are thus removed from
>>> all specific XDR routines in the kernel.
>>>
>>> ---
>>>
>>> Chuck Lever (31):
>>> SUNRPC: New xdr_streams XDR decoder API
>>> SUNRPC: New xdr_streams XDR encoder API
>>> SUNRPC: Determine value of "nrprocs" automatically
>>> SUNRPC: Avoid return code checking in rpcbind XDR encoder functions
>>> NFS: Remove unused UMNT response data structure
>>> NFS: Avoid return code checking in mount XDR encoder functions
>>> NSM: Avoid return code checking in NSM XDR encoder functions
>>> NFS: Squelch compiler warning in decode_getdeviceinfo()
>>> NFS: Simplify ->decode_dirent() calling sequence
>>> NFS: Fix hdrlen calculation in NFSv4's decode_read()
>>> lockd: Move nlmdbg_cookie2a() to svclock.c
>>> NFS: Repair whitespace damage in NFS PROC macro
>>> NFSD: Update XDR decoders in NFSv4 callback client
>>> NFSD: Update XDR encoders in NFSv4 callback client
>>> lockd: Introduce new-style XDR functions for NLMv4
>>> NFS: Move and update xdr_decode_foo() functions that we're keeping
>>> NFS: Remove unused old NFSv3 decoder functions
>>> NFS: Switch in new NFSv3 decoder functions
>>> NFS: Introduce new-style XDR decoding functions for NFSv2
>>> NFS: Update xdr_encode_foo() functions that we're keeping
>>> NFS: Remove unused old NFSv3 encoder functions
>>> NFS: Replace old NFSv3 encoder functions with xdr_stream-based ones
>>> NFS: Introduce new-style XDR encoding functions for NFSv3
>>> lockd: Introduce new-style XDR functions for NLMv3
>>> NFS: Move and update xdr_decode_foo() functions that we're keeping
>>> NFS: Replace old NFSv2 decoder functions with xdr_stream-based ones
>>> NFS: Introduce new-style XDR decoding functions for NFSv2
>>> NFS: Use the "nfs_stat" enum for nfs_stat_to_errno()'s argument
>>> NFS: Update xdr_encode_foo() functions that we're keeping
>>> NFS: Remove old NFSv2 encoder functions
>>> NFS: Introduce new-style XDR encoding functions for NFSv2
>>>
>>>
>>> fs/lockd/Makefile | 6
>>> fs/lockd/clnt4xdr.c | 605 ++++++++
>>> fs/lockd/clntxdr.c | 627 +++++++++
>>> fs/lockd/mon.c | 110 +-
>>> fs/lockd/svclock.c | 30
>>> fs/lockd/xdr.c | 287 ----
>>> fs/lockd/xdr4.c | 255 ----
>>> fs/nfs/dir.c | 15
>>> fs/nfs/internal.h | 11
>>> fs/nfs/mount_clnt.c | 81 -
>>> fs/nfs/nfs2xdr.c | 1297 ++++++++++++------
>>> fs/nfs/nfs3xdr.c | 2892 +++++++++++++++++++++++++++++-----------
>>> fs/nfs/nfs4_fs.h | 1
>>> fs/nfs/nfs4xdr.c | 1401 +++++++++----------
>>> fs/nfs/proc.c | 2
>>> fs/nfsd/nfs4callback.c | 690 ++++++----
>>> include/linux/lockd/debug.h | 10
>>> include/linux/nfs3.h | 3
>>> include/linux/nfs_xdr.h | 3
>>> include/linux/sunrpc/auth.h | 8
>>> include/linux/sunrpc/clnt.h | 4
>>> include/linux/sunrpc/xdr.h | 10
>>> net/sunrpc/auth.c | 28
>>> net/sunrpc/auth_gss/auth_gss.c | 44 -
>>> net/sunrpc/clnt.c | 9
>>> net/sunrpc/rpcb_clnt.c | 147 +-
>>> 26 files changed, 5529 insertions(+), 3047 deletions(-)
>>> create mode 100644 fs/lockd/clnt4xdr.c
>>> create mode 100644 fs/lockd/clntxdr.c
>>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 53+ messages in thread* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-16 20:21 ` Ric Wheeler
@ 2010-12-16 21:04 ` Chuck Lever
2010-12-16 22:45 ` Ric Wheeler
0 siblings, 1 reply; 53+ messages in thread
From: Chuck Lever @ 2010-12-16 21:04 UTC (permalink / raw)
To: Ric Wheeler; +Cc: Steve Dickson, trond.myklebust, linux-nfs
On Dec 16, 2010, at 3:21 PM, Ric Wheeler wrote:
> On 12/16/2010 03:04 PM, Chuck Lever wrote:
>> On Dec 16, 2010, at 2:14 PM, Steve Dickson wrote:
>>
>>> Hello,
>>>
>>> I was wondering if it would be possible hold off on committing major
>>> cleans ups like this one (and the RFC: Split nlm_host cache series)
>>> until pNFS wave3 is committed into either Trond's tree and/or in the
>>> mainline kernel.
>>>
>>> I realize this is a huge request to make, something we've never done
>>> before. But talking with the powers to be on this end, include Ric
>>> Wheeler, accepting these types of patches before the pNFS bits
>>> settle down will make close to impossible for there to be any
>>> meaningful pNFS support in the RHEL 6 kernels. We would have
>>> to push the support off to RHEL 7.
>>>
>>> The reasoning is this, which I do agree with, these types of
>>> patches, although probably needed, do not added any new features
>>> or fix any outstanding bugs.
>> The XDR series does add a new feature, FWIW: it adds buffer overflow protection to the client's reply processing logic. Says so right in the patch descriptions.
>
> Hi Chuck,
>
> My concern is one of testing one massive set of changes at a time and trying to get those stable (and through QA) before code refactoring. We have been focused on the pNFS bits for what feels like eons and they seem to be getting *really* close now :)
Likewise, these XDR changes have been floating around since 2007 :-) I'd rather not be penalized yet again because of the timing of other work.
> I certainly do not object to this work, just want to get the pNFS flood absorbed and processed first.
>
> The risk of putting it all in the hopper together is that testing and debugging (in upstream, non-vendor distros and vendor distros) gets harder to qa, debug if/when issues arise and get stable.
Except for the across-the-board API change, the NFSv2 and NFSv3 XDR patches are entirely unrelated to pNFS. Debugging, if any is needed, and QA can be done completely in parallel and by different developers (upstream). Problems in that code will not have any effect on NFSv4 or pNFS.
Again, you guys can lean on us upstream folks to help with troubleshooting and providing fixes. Any fixes for bugs you find will have to come upstream anyway.
> It would certainly help us to stage pulling the XDR clean up work until after we settle the various pNFS "waves" of change, but I can also understand why you would prefer to push them in sooner.
In principal, I can understand why you might hesitate to allow this change too. But someone got scared by looking just at the patch count. "fscache" this ain't. There's a difference between complexity and changes that are simply broad.
XDR is so basic that it will be obvious when something critical isn't right and how to fix it. Bruce has already passed this through his magic automated test suite, multiple times. A pass through linux-next will identify any significant remaining issues.
Based on the age of these patches, the fact that any problems will likely be obvious, and the amount of testing they've already received, I expect it won't be anywhere near the kind of QA workload that pNFS will be. However, I'd like to move forward with actual evidence about what it might cost you. You can start looking at these now by pulling my git repo (git.linux-nfs.org cel-2.6) and trying a run through your QA cycle. If you find a high defect rate, we can stop this conversation and hold off.
> Thanks!
>
> Ric
>
>>> More likely than not (for a time) they will
>>> add some instability due to the lack of usage and testing. These type of
>>> changes are much too large for even our QE group to test and verify and
>>> obviously instability is the last thing we can interject into an
>>> on going enterprise product stream.
>> The only NFSv4-related changes in this series are limited to refactoring. No behavior changes are made in the NFSv4 code. The bulk of the changes effect only NFSv2 and NFSv3, and will have no impact on pNFS (other than a minor API change).
>>
>> XDR is straightforward and well understood. If anything is broken by these patches, I expect it will be exposed quickly.
>>
>> The NLM patches also have nothing to do with pNFS, AFAICT, and can likely be skipped for RHEL 6.
>>
>>> Again, I realize what we are asking and how big this request
>>> really is. Its just that we've come so far and are pretty close
>>> (IMHO) to have some meaningful pNFS support in RHEL 6, I
>>> figured I'd take a shoot and ask...
>> I don't think these are as world-bending as you believe. I'm happy to discuss the actual changes with Ric.
>>
>>> steved.
>>>
>>> On 12/14/2010 09:54 AM, Chuck Lever wrote:
>>>> Trond-
>>>>
>>>> As requested, here is my latest revision of the XDR patchset for
>>>> 2.6.38.
>>>>
>>>> This converts NFSv2 and v3, all versions of NLM, and the server's
>>>> NFSv4 callback client. It updates the XDR code for rpcbind, NSM, and
>>>> MNT as well.
>>>>
>>>> All encoders and decoders now use xdr_streams. All encoders now BUG
>>>> on any error and return void.
>>>>
>>>> As a bonus, this series converts the whole kit and kaboodle to a new
>>>> calling sequence. The RPC client's generic encode and decode routines
>>>> now invoke xdr_init_{en,de}code before calling the specific XDR
>>>> routines. The xdr_init_{en,de}code call sites are thus removed from
>>>> all specific XDR routines in the kernel.
>>>>
>>>> ---
>>>>
>>>> Chuck Lever (31):
>>>> SUNRPC: New xdr_streams XDR decoder API
>>>> SUNRPC: New xdr_streams XDR encoder API
>>>> SUNRPC: Determine value of "nrprocs" automatically
>>>> SUNRPC: Avoid return code checking in rpcbind XDR encoder functions
>>>> NFS: Remove unused UMNT response data structure
>>>> NFS: Avoid return code checking in mount XDR encoder functions
>>>> NSM: Avoid return code checking in NSM XDR encoder functions
>>>> NFS: Squelch compiler warning in decode_getdeviceinfo()
>>>> NFS: Simplify ->decode_dirent() calling sequence
>>>> NFS: Fix hdrlen calculation in NFSv4's decode_read()
>>>> lockd: Move nlmdbg_cookie2a() to svclock.c
>>>> NFS: Repair whitespace damage in NFS PROC macro
>>>> NFSD: Update XDR decoders in NFSv4 callback client
>>>> NFSD: Update XDR encoders in NFSv4 callback client
>>>> lockd: Introduce new-style XDR functions for NLMv4
>>>> NFS: Move and update xdr_decode_foo() functions that we're keeping
>>>> NFS: Remove unused old NFSv3 decoder functions
>>>> NFS: Switch in new NFSv3 decoder functions
>>>> NFS: Introduce new-style XDR decoding functions for NFSv2
>>>> NFS: Update xdr_encode_foo() functions that we're keeping
>>>> NFS: Remove unused old NFSv3 encoder functions
>>>> NFS: Replace old NFSv3 encoder functions with xdr_stream-based ones
>>>> NFS: Introduce new-style XDR encoding functions for NFSv3
>>>> lockd: Introduce new-style XDR functions for NLMv3
>>>> NFS: Move and update xdr_decode_foo() functions that we're keeping
>>>> NFS: Replace old NFSv2 decoder functions with xdr_stream-based ones
>>>> NFS: Introduce new-style XDR decoding functions for NFSv2
>>>> NFS: Use the "nfs_stat" enum for nfs_stat_to_errno()'s argument
>>>> NFS: Update xdr_encode_foo() functions that we're keeping
>>>> NFS: Remove old NFSv2 encoder functions
>>>> NFS: Introduce new-style XDR encoding functions for NFSv2
>>>>
>>>>
>>>> fs/lockd/Makefile | 6
>>>> fs/lockd/clnt4xdr.c | 605 ++++++++
>>>> fs/lockd/clntxdr.c | 627 +++++++++
>>>> fs/lockd/mon.c | 110 +-
>>>> fs/lockd/svclock.c | 30
>>>> fs/lockd/xdr.c | 287 ----
>>>> fs/lockd/xdr4.c | 255 ----
>>>> fs/nfs/dir.c | 15
>>>> fs/nfs/internal.h | 11
>>>> fs/nfs/mount_clnt.c | 81 -
>>>> fs/nfs/nfs2xdr.c | 1297 ++++++++++++------
>>>> fs/nfs/nfs3xdr.c | 2892 +++++++++++++++++++++++++++++-----------
>>>> fs/nfs/nfs4_fs.h | 1
>>>> fs/nfs/nfs4xdr.c | 1401 +++++++++----------
>>>> fs/nfs/proc.c | 2
>>>> fs/nfsd/nfs4callback.c | 690 ++++++----
>>>> include/linux/lockd/debug.h | 10
>>>> include/linux/nfs3.h | 3
>>>> include/linux/nfs_xdr.h | 3
>>>> include/linux/sunrpc/auth.h | 8
>>>> include/linux/sunrpc/clnt.h | 4
>>>> include/linux/sunrpc/xdr.h | 10
>>>> net/sunrpc/auth.c | 28
>>>> net/sunrpc/auth_gss/auth_gss.c | 44 -
>>>> net/sunrpc/clnt.c | 9
>>>> net/sunrpc/rpcb_clnt.c | 147 +-
>>>> 26 files changed, 5529 insertions(+), 3047 deletions(-)
>>>> create mode 100644 fs/lockd/clnt4xdr.c
>>>> create mode 100644 fs/lockd/clntxdr.c
>>>>
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
>>> the body of a message to majordomo@vger.kernel.org
>>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
--
Chuck Lever
chuck[dot]lever[at]oracle[dot]com
^ permalink raw reply [flat|nested] 53+ messages in thread* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-16 21:04 ` Chuck Lever
@ 2010-12-16 22:45 ` Ric Wheeler
0 siblings, 0 replies; 53+ messages in thread
From: Ric Wheeler @ 2010-12-16 22:45 UTC (permalink / raw)
To: Chuck Lever; +Cc: Steve Dickson, trond.myklebust, linux-nfs
On 12/16/2010 04:04 PM, Chuck Lever wrote:
> On Dec 16, 2010, at 3:21 PM, Ric Wheeler wrote:
>
>> On 12/16/2010 03:04 PM, Chuck Lever wrote:
>>> On Dec 16, 2010, at 2:14 PM, Steve Dickson wrote:
>>>
>>>> Hello,
>>>>
>>>> I was wondering if it would be possible hold off on committing major
>>>> cleans ups like this one (and the RFC: Split nlm_host cache series)
>>>> until pNFS wave3 is committed into either Trond's tree and/or in the
>>>> mainline kernel.
>>>>
>>>> I realize this is a huge request to make, something we've never done
>>>> before. But talking with the powers to be on this end, include Ric
>>>> Wheeler, accepting these types of patches before the pNFS bits
>>>> settle down will make close to impossible for there to be any
>>>> meaningful pNFS support in the RHEL 6 kernels. We would have
>>>> to push the support off to RHEL 7.
>>>>
>>>> The reasoning is this, which I do agree with, these types of
>>>> patches, although probably needed, do not added any new features
>>>> or fix any outstanding bugs.
>>> The XDR series does add a new feature, FWIW: it adds buffer overflow protection to the client's reply processing logic. Says so right in the patch descriptions.
>> Hi Chuck,
>>
>> My concern is one of testing one massive set of changes at a time and trying to get those stable (and through QA) before code refactoring. We have been focused on the pNFS bits for what feels like eons and they seem to be getting *really* close now :)
> Likewise, these XDR changes have been floating around since 2007 :-) I'd rather not be penalized yet again because of the timing of other work.
>
>> I certainly do not object to this work, just want to get the pNFS flood absorbed and processed first.
>>
>> The risk of putting it all in the hopper together is that testing and debugging (in upstream, non-vendor distros and vendor distros) gets harder to qa, debug if/when issues arise and get stable.
> Except for the across-the-board API change, the NFSv2 and NFSv3 XDR patches are entirely unrelated to pNFS. Debugging, if any is needed, and QA can be done completely in parallel and by different developers (upstream). Problems in that code will not have any effect on NFSv4 or pNFS.
>
> Again, you guys can lean on us upstream folks to help with troubleshooting and providing fixes. Any fixes for bugs you find will have to come upstream anyway.
It is not the trouble shooting I worry about, it is being able to test major
changes properly before doing refactoring. Debugging we as a community do well,
getting the code tested exhaustively depends on locking down resources outside
of the developer community (qa people & test machines) and setting them loose to
test things we don't.
>> It would certainly help us to stage pulling the XDR clean up work until after we settle the various pNFS "waves" of change, but I can also understand why you would prefer to push them in sooner.
> In principal, I can understand why you might hesitate to allow this change too. But someone got scared by looking just at the patch count. "fscache" this ain't. There's a difference between complexity and changes that are simply broad.
>
> XDR is so basic that it will be obvious when something critical isn't right and how to fix it. Bruce has already passed this through his magic automated test suite, multiple times. A pass through linux-next will identify any significant remaining issues.
>
> Based on the age of these patches, the fact that any problems will likely be obvious, and the amount of testing they've already received, I expect it won't be anywhere near the kind of QA workload that pNFS will be. However, I'd like to move forward with actual evidence about what it might cost you. You can start looking at these now by pulling my git repo (git.linux-nfs.org cel-2.6) and trying a run through your QA cycle. If you find a high defect rate, we can stop this conversation and hold off.
>
>
My concern is not just about Fedora and RHEL, rather it is about trying to get
one massive, disruptive set of changes in & tested before launching into a
refactoring that touches lots of critical bits. That is a concern with upstream
& the distro of your choice.
If we do both at once, then we test them together and end up thrashing.
About putting the changes through QA, we only normally do that kind of extensive
testing for major features that have a clear customer interest. I have to go to
them and sell them on spending weeks of time, lobby partners to test, etc (not
just Steve, Bruce, Jeff and our NFS developers :)).
And don't forget performance - correctness is one thing (it won't blow up or
give bad data), but we also need to revalidate performance.
In the end, this is not my call, but it would be helpful to me and help me get
pNFS features landed and tested if we could hold off a bit on non-critical
changes for a release.
Do you all have any QA resources at Oracle that can torture your patches?
Thanks!
Ric
^ permalink raw reply [flat|nested] 53+ messages in thread
* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-16 20:04 ` Chuck Lever
2010-12-16 20:21 ` Ric Wheeler
@ 2010-12-16 20:43 ` Steve Dickson
1 sibling, 0 replies; 53+ messages in thread
From: Steve Dickson @ 2010-12-16 20:43 UTC (permalink / raw)
To: Chuck Lever; +Cc: trond.myklebust, linux-nfs
Hey Chuck,
On 12/16/2010 03:04 PM, Chuck Lever wrote:
>
> On Dec 16, 2010, at 2:14 PM, Steve Dickson wrote:
>
>> Hello,
>>
>> I was wondering if it would be possible hold off on committing major
>> cleans ups like this one (and the RFC: Split nlm_host cache series)
>> until pNFS wave3 is committed into either Trond's tree and/or in the
>> mainline kernel.
>>
>> I realize this is a huge request to make, something we've never done
>> before. But talking with the powers to be on this end, include Ric
>> Wheeler, accepting these types of patches before the pNFS bits
>> settle down will make close to impossible for there to be any
>> meaningful pNFS support in the RHEL 6 kernels. We would have
>> to push the support off to RHEL 7.
>>
>> The reasoning is this, which I do agree with, these types of
>> patches, although probably needed, do not added any new features
>> or fix any outstanding bugs.
>
> The XDR series does add a new feature, FWIW: it adds buffer overflow
> protection to the client's reply processing logic. Says so right in the
> patch descriptions.
No... I didn't miss the "bonus" :-) Its just that these are major changes
in the bowels of the NFS code at at time when other major changes (like pNFS)
are happening... Its just a lot of change happening at once...
>
>> More likely than not (for a time) they will
>> add some instability due to the lack of usage and testing. These type of
>> changes are much too large for even our QE group to test and verify and
>> obviously instability is the last thing we can interject into an
>> on going enterprise product stream.
>
> The only NFSv4-related changes in this series are limited to refactoring.
> No behavior changes are made in the NFSv4 code. The bulk of the changes
> effect only NFSv2 and NFSv3, and will have no impact on pNFS (other than
> a minor API change).
We obviously maintaining stability in those version are important too.. ;-)
Again its just the amount of change and what is changing...
>
> XDR is straightforward and well understood. If anything is broken by these
> patches, I expect it will be exposed quickly.
>
> The NLM patches also have nothing to do with pNFS, AFAICT, and can likely
> be skipped for RHEL 6.
I have found pulling major pieces out of major release tends to have
disastrous results... Its an all or nothing thing...
>
>> Again, I realize what we are asking and how big this request
>> really is. Its just that we've come so far and are pretty close
>> (IMHO) to have some meaningful pNFS support in RHEL 6, I
>> figured I'd take a shoot and ask...
>
> I don't think these are as world-bending as you believe. I'm happy to
> discuss the actual changes with Ric.
Fantastic!
steved.
^ permalink raw reply [flat|nested] 53+ messages in thread
* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-16 19:14 ` [PATCH 00/31] NFS XDR clean up for 2.6.38 Steve Dickson
2010-12-16 20:04 ` Chuck Lever
@ 2010-12-16 23:05 ` Christoph Hellwig
2010-12-16 23:14 ` Ric Wheeler
` (2 more replies)
1 sibling, 3 replies; 53+ messages in thread
From: Christoph Hellwig @ 2010-12-16 23:05 UTC (permalink / raw)
To: Steve Dickson; +Cc: trond.myklebust, linux-nfs
Steve,
I think it's totally out of place to try to put back large work on the
whole nfs client for vendor interest in an absolute fringe feature.
I think you should at least be a bit ashamed for even putting this
forward.
^ permalink raw reply [flat|nested] 53+ messages in thread* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-16 23:05 ` Christoph Hellwig
@ 2010-12-16 23:14 ` Ric Wheeler
2010-12-16 23:16 ` Christoph Hellwig
2010-12-16 23:30 ` Ric Wheeler
2010-12-17 12:16 ` Steve Dickson
2 siblings, 1 reply; 53+ messages in thread
From: Ric Wheeler @ 2010-12-16 23:14 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: Steve Dickson, trond.myklebust, linux-nfs
On 12/16/2010 06:05 PM, Christoph Hellwig wrote:
> Steve,
>
> I think it's totally out of place to try to put back large work on the
> whole nfs client for vendor interest in an absolute fringe feature.
>
> I think you should at least be a bit ashamed for even putting this
> forward.
>
This is not us trying to block anything, just do an orderly testing of changes.
Why do three "waves" of pNFS related changes and refactor code all at once?
ric
^ permalink raw reply [flat|nested] 53+ messages in thread
* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-16 23:14 ` Ric Wheeler
@ 2010-12-16 23:16 ` Christoph Hellwig
2010-12-16 23:24 ` Ric Wheeler
0 siblings, 1 reply; 53+ messages in thread
From: Christoph Hellwig @ 2010-12-16 23:16 UTC (permalink / raw)
To: Ric Wheeler; +Cc: Christoph Hellwig, Steve Dickson, trond.myklebust, linux-nfs
On Thu, Dec 16, 2010 at 06:14:34PM -0500, Ric Wheeler wrote:
> This is not us trying to block anything, just do an orderly testing of changes.
>
> Why do three "waves" of pNFS related changes and refactor code all at once?
Because some forces seem to force pnfs into the kernel despite neither
beeing ready nor overly useful. If you look at the userbase of the
Linux NFS client a robust XDR encode/decoder without buffer overflows is
a lot more important than a partially working pNFS client.
^ permalink raw reply [flat|nested] 53+ messages in thread
* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-16 23:16 ` Christoph Hellwig
@ 2010-12-16 23:24 ` Ric Wheeler
0 siblings, 0 replies; 53+ messages in thread
From: Ric Wheeler @ 2010-12-16 23:24 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: Steve Dickson, trond.myklebust, linux-nfs
On 12/16/2010 06:16 PM, Christoph Hellwig wrote:
> On Thu, Dec 16, 2010 at 06:14:34PM -0500, Ric Wheeler wrote:
>> This is not us trying to block anything, just do an orderly testing of changes.
>>
>> Why do three "waves" of pNFS related changes and refactor code all at once?
> Because some forces seem to force pnfs into the kernel despite neither
> beeing ready nor overly useful. If you look at the userbase of the
> Linux NFS client a robust XDR encode/decoder without buffer overflows is
> a lot more important than a partially working pNFS client.
I think that the pNFS features are actually quite useful and do have a pull with
the user base. Not to knock the XDR work but I would put it behind the current
churn.
If you look at the number of pNFS commits from the NFS developers, clearly pNFS
is important to many of them (and/or their employers of course :))
Ric
^ permalink raw reply [flat|nested] 53+ messages in thread
* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-16 23:05 ` Christoph Hellwig
2010-12-16 23:14 ` Ric Wheeler
@ 2010-12-16 23:30 ` Ric Wheeler
2010-12-16 23:40 ` Christoph Hellwig
2010-12-17 12:16 ` Steve Dickson
2 siblings, 1 reply; 53+ messages in thread
From: Ric Wheeler @ 2010-12-16 23:30 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: Steve Dickson, trond.myklebust, linux-nfs
On 12/16/2010 06:05 PM, Christoph Hellwig wrote:
> Steve,
>
> I think it's totally out of place to try to put back large work on the
> whole nfs client for vendor interest in an absolute fringe feature.
>
> I think you should at least be a bit ashamed for even putting this
> forward.
>
This has nothing to do with shame or conspiracy, it has to do with doing changes
in an orderly way so we can test and stabilize things in the upstream kernel.
Changing both at once is not good for upstream or distros in my opinion,
Ric
^ permalink raw reply [flat|nested] 53+ messages in thread
* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-16 23:30 ` Ric Wheeler
@ 2010-12-16 23:40 ` Christoph Hellwig
2010-12-17 3:32 ` Trond Myklebust
0 siblings, 1 reply; 53+ messages in thread
From: Christoph Hellwig @ 2010-12-16 23:40 UTC (permalink / raw)
To: Ric Wheeler; +Cc: Christoph Hellwig, Steve Dickson, trond.myklebust, linux-nfs
On Thu, Dec 16, 2010 at 06:30:34PM -0500, Ric Wheeler wrote:
> This has nothing to do with shame or conspiracy, it has to do with
> doing changes in an orderly way so we can test and stabilize things
> in the upstream kernel.
>
> Changing both at once is not good for upstream or distros in my opinion,
Steve's mail reads pretty different from that.
But it doesn't really matter as it doesn't make any sense - as Chuck
has explained theres zero overlap between the XDR decoder changes and
pnfs features anyway. And if there was it's pretty clear something that
the about 98% of the userbase that's using NFSv3 uses should have more
priority over the 0.5% that are planning to maybe possibly use pnfs in
the next decade.
^ permalink raw reply [flat|nested] 53+ messages in thread
* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-16 23:40 ` Christoph Hellwig
@ 2010-12-17 3:32 ` Trond Myklebust
2010-12-17 14:56 ` Steve Dickson
2010-12-17 17:11 ` Chuck Lever
0 siblings, 2 replies; 53+ messages in thread
From: Trond Myklebust @ 2010-12-17 3:32 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: Ric Wheeler, Steve Dickson, linux-nfs
On Thu, 2010-12-16 at 18:40 -0500, Christoph Hellwig wrote:
> On Thu, Dec 16, 2010 at 06:30:34PM -0500, Ric Wheeler wrote:
> > This has nothing to do with shame or conspiracy, it has to do with
> > doing changes in an orderly way so we can test and stabilize things
> > in the upstream kernel.
> >
> > Changing both at once is not good for upstream or distros in my opinion,
>
> Steve's mail reads pretty different from that.
>
> But it doesn't really matter as it doesn't make any sense - as Chuck
> has explained theres zero overlap between the XDR decoder changes and
> pnfs features anyway. And if there was it's pretty clear something that
> the about 98% of the userbase that's using NFSv3 uses should have more
> priority over the 0.5% that are planning to maybe possibly use pnfs in
> the next decade.
Hi guys,
I agree 100% with the basic premise that we should not have to deal with
compatibility issues for NFSv4.1/pnfs backports when deciding what to
merge upstream.
That said: as far as I can see, pretty much all these changes are
confined to the NFSv2 and NFSv3 XDR code. I can quite understand why
distros like Red Hat, SuSE, Debian, and others might want to avoid
having to back port changes, given that the NFSv2 and NFSv3 code bases
are supposed to be fully stable and frozen.
So my questions to Steve and Ric are:
1. Specifically, which part of these changes are causing
backporting headaches for the RHEL-6 code base? Note that when
asking that question I am assuming that Red Hat will triage and
reject patches that conflict with their stability goals.
2. Could we set up some minimal set of patches that would allow the
pNFS backport while avoiding the need for a full backport of
Chuck's patches for NFSv2/v3? If so, what features do we need,
and what is not needed?
IOW: how can we refactor these patches so as to avoid tying the set of
NFSv2/v3 changes to any pNFS interests?
Cheers
Trond
--
Trond Myklebust
Linux NFS client maintainer
NetApp
Trond.Myklebust@netapp.com
www.netapp.com
^ permalink raw reply [flat|nested] 53+ messages in thread* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-17 3:32 ` Trond Myklebust
@ 2010-12-17 14:56 ` Steve Dickson
2010-12-17 17:11 ` Chuck Lever
1 sibling, 0 replies; 53+ messages in thread
From: Steve Dickson @ 2010-12-17 14:56 UTC (permalink / raw)
To: Trond Myklebust; +Cc: Christoph Hellwig, Ric Wheeler, linux-nfs
Hello
On 12/16/2010 10:32 PM, Trond Myklebust wrote:
> On Thu, 2010-12-16 at 18:40 -0500, Christoph Hellwig wrote:
>> On Thu, Dec 16, 2010 at 06:30:34PM -0500, Ric Wheeler wrote:
>>> This has nothing to do with shame or conspiracy, it has to do with
>>> doing changes in an orderly way so we can test and stabilize things
>>> in the upstream kernel.
>>>
>>> Changing both at once is not good for upstream or distros in my opinion,
>>
>> Steve's mail reads pretty different from that.
>>
>> But it doesn't really matter as it doesn't make any sense - as Chuck
>> has explained theres zero overlap between the XDR decoder changes and
>> pnfs features anyway. And if there was it's pretty clear something that
>> the about 98% of the userbase that's using NFSv3 uses should have more
>> priority over the 0.5% that are planning to maybe possibly use pnfs in
>> the next decade.
>
> Hi guys,
>
> I agree 100% with the basic premise that we should not have to deal with
> compatibility issues for NFSv4.1/pnfs backports when deciding what to
> merge upstream.
Cool...
> That said: as far as I can see, pretty much all these changes are
> confined to the NFSv2 and NFSv3 XDR code. I can quite understand why
> distros like Red Hat, SuSE, Debian, and others might want to avoid
> having to back port changes, given that the NFSv2 and NFSv3 code bases
> are supposed to be fully stable and frozen.
>
> So my questions to Steve and Ric are:
>
> 1. Specifically, which part of these changes are causing
> backporting headaches for the RHEL-6 code base? Note that when
> asking that question I am assuming that Red Hat will triage and
> reject patches that conflict with their stability goals.
As of the 2.6.32 kernel we have been pulling in all the NFS (both
client and server) changes from every major release. Meaning at
this point the RHEL6.1 NFS code will be bug for bug compatible with
the NFS code in the 2.6.37 mainline kernel. So no, we have not been
reject many patches.
The reason we have been pulling in the entire releases is because
when the pNFS bits are ready, we just want to pull them in and
not have a backport from hell, basically forking from upstream.
Think of what has changed between the 2.6.32 and 2.6.37 kernels.
Backports like that are basically forks, IMHO...
Keeping with this theory, when 2.6.38 is release we would pull
in the pNFS bits but also all the changes to parts of the code that
doesn't seem to be broken.
The problem for us is RHEL6 has been released so the days of me
pushing in hundreds and hundreds of patches that change parts
of the code that, again, are not broken are gone. We simply do
not have the resources to QA that amount of changes.
Finally, history has shown, backporting large chucks of code out of
a major release basically turns into a fork as well, which will
not help us or more importantly not help this community.
> 2. Could we set up some minimal set of patches that would allow the
> pNFS backport while avoiding the need for a full backport of
> Chuck's patches for NFSv2/v3? If so, what features do we need,
> and what is not needed?
>
> IOW: how can we refactor these patches so as to avoid tying the set of
> NFSv2/v3 changes to any pNFS interests?
I don't know... We could look into something like this, but from an
upstream perspective, would it be worth it? Does it make sense?
Again I don't know
Trond, it will not be the end of the world if RHEL6 does not have
pNFS support... Again I think it would help the community by
move the technology forward sooner verse later, but if it
does not work out... so be it..
We will just move the support to RHEL 7 and move on... Heck that
would make my life much easier (which I'm *always* a fan of ;-) )
and we always have Fedora...
Its just when I heard, in this week's pNFS meeting, how close we were
of having some meaningful pNFS bits (i.e. wave2), we decided to make
this highly unusual (some call it shameful) request of asking to
minimize changes until the pNFS bits stabilize...
Thank you for even considering it...
steved.
^ permalink raw reply [flat|nested] 53+ messages in thread
* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-17 3:32 ` Trond Myklebust
2010-12-17 14:56 ` Steve Dickson
@ 2010-12-17 17:11 ` Chuck Lever
2010-12-17 22:44 ` Ric Wheeler
1 sibling, 1 reply; 53+ messages in thread
From: Chuck Lever @ 2010-12-17 17:11 UTC (permalink / raw)
To: Trond Myklebust; +Cc: Christoph Hellwig, Ric Wheeler, Steve Dickson, linux-nfs
On Dec 16, 2010, at 10:32 PM, Trond Myklebust wrote:
> On Thu, 2010-12-16 at 18:40 -0500, Christoph Hellwig wrote:
>> On Thu, Dec 16, 2010 at 06:30:34PM -0500, Ric Wheeler wrote:
>>> This has nothing to do with shame or conspiracy, it has to do with
>>> doing changes in an orderly way so we can test and stabilize things
>>> in the upstream kernel.
>>>
>>> Changing both at once is not good for upstream or distros in my opinion,
>>
>> Steve's mail reads pretty different from that.
>>
>> But it doesn't really matter as it doesn't make any sense - as Chuck
>> has explained theres zero overlap between the XDR decoder changes and
>> pnfs features anyway. And if there was it's pretty clear something that
>> the about 98% of the userbase that's using NFSv3 uses should have more
>> priority over the 0.5% that are planning to maybe possibly use pnfs in
>> the next decade.
>
> Hi guys,
>
> I agree 100% with the basic premise that we should not have to deal with
> compatibility issues for NFSv4.1/pnfs backports when deciding what to
> merge upstream.
> That said: as far as I can see, pretty much all these changes are
> confined to the NFSv2 and NFSv3 XDR code. I can quite understand why
> distros like Red Hat, SuSE, Debian, and others might want to avoid
> having to back port changes, given that the NFSv2 and NFSv3 code bases
> are supposed to be fully stable and frozen.
>
> So my questions to Steve and Ric are:
>
> 1. Specifically, which part of these changes are causing
> backporting headaches for the RHEL-6 code base? Note that when
> asking that question I am assuming that Red Hat will triage and
> reject patches that conflict with their stability goals.
> 2. Could we set up some minimal set of patches that would allow the
> pNFS backport while avoiding the need for a full backport of
> Chuck's patches for NFSv2/v3? If so, what features do we need,
> and what is not needed?
>
> IOW: how can we refactor these patches so as to avoid tying the set of
> NFSv2/v3 changes to any pNFS interests?
My reading of Ric's concern is that RH doesn't have the resources to deal with bugs in both the pNFS code and the NFSv2/v3 code at the same time. They would like the ability to ignore orthogonal upstream patches to get the features they want. I've seen no detailed risk analysis, so I can't confirm that there is significant additional risk to including the XDR patches with the pNFS wave going in 2.6.38.
Practically speaking, RH can safely ignore the NLM changes if they go upstream now, since there ought to be no intersection between pNFS and the NLM changes. To make the XDR changes ignorable, you could postpone the final two patches in that series until after pNFS is upstream, and there should be few if any merge conflicts with the existing pNFS waves. But I think those two patches were the reason we wanted to do this change now: we don't want to introduce any more uses of the old XDR API.
--
Chuck Lever
chuck[dot]lever[at]oracle[dot]com
^ permalink raw reply [flat|nested] 53+ messages in thread
* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-17 17:11 ` Chuck Lever
@ 2010-12-17 22:44 ` Ric Wheeler
0 siblings, 0 replies; 53+ messages in thread
From: Ric Wheeler @ 2010-12-17 22:44 UTC (permalink / raw)
To: Chuck Lever; +Cc: Trond Myklebust, Christoph Hellwig, Steve Dickson, linux-nfs
On 12/17/2010 12:11 PM, Chuck Lever wrote:
> On Dec 16, 2010, at 10:32 PM, Trond Myklebust wrote:
>
>> On Thu, 2010-12-16 at 18:40 -0500, Christoph Hellwig wrote:
>>> On Thu, Dec 16, 2010 at 06:30:34PM -0500, Ric Wheeler wrote:
>>>> This has nothing to do with shame or conspiracy, it has to do with
>>>> doing changes in an orderly way so we can test and stabilize things
>>>> in the upstream kernel.
>>>>
>>>> Changing both at once is not good for upstream or distros in my opinion,
>>> Steve's mail reads pretty different from that.
>>>
>>> But it doesn't really matter as it doesn't make any sense - as Chuck
>>> has explained theres zero overlap between the XDR decoder changes and
>>> pnfs features anyway. And if there was it's pretty clear something that
>>> the about 98% of the userbase that's using NFSv3 uses should have more
>>> priority over the 0.5% that are planning to maybe possibly use pnfs in
>>> the next decade.
>> Hi guys,
>>
>> I agree 100% with the basic premise that we should not have to deal with
>> compatibility issues for NFSv4.1/pnfs backports when deciding what to
>> merge upstream.
>> That said: as far as I can see, pretty much all these changes are
>> confined to the NFSv2 and NFSv3 XDR code. I can quite understand why
>> distros like Red Hat, SuSE, Debian, and others might want to avoid
>> having to back port changes, given that the NFSv2 and NFSv3 code bases
>> are supposed to be fully stable and frozen.
>>
>> So my questions to Steve and Ric are:
>>
>> 1. Specifically, which part of these changes are causing
>> backporting headaches for the RHEL-6 code base? Note that when
>> asking that question I am assuming that Red Hat will triage and
>> reject patches that conflict with their stability goals.
>> 2. Could we set up some minimal set of patches that would allow the
>> pNFS backport while avoiding the need for a full backport of
>> Chuck's patches for NFSv2/v3? If so, what features do we need,
>> and what is not needed?
>>
>> IOW: how can we refactor these patches so as to avoid tying the set of
>> NFSv2/v3 changes to any pNFS interests?
> My reading of Ric's concern is that RH doesn't have the resources to deal with bugs in both the pNFS code and the NFSv2/v3 code at the same time. They would like the ability to ignore orthogonal upstream patches to get the features they want. I've seen no detailed risk analysis, so I can't confirm that there is significant additional risk to including the XDR patches with the pNFS wave going in 2.6.38.
>
> Practically speaking, RH can safely ignore the NLM changes if they go upstream now, since there ought to be no intersection between pNFS and the NLM changes. To make the XDR changes ignorable, you could postpone the final two patches in that series until after pNFS is upstream, and there should be few if any merge conflicts with the existing pNFS waves. But I think those two patches were the reason we wanted to do this change now: we don't want to introduce any more uses of the old XDR API.
>
What we have been trying to do is to keep all of our efforts focused on upstream
kernel testing and pulling back aggressively. Staying focused on upstream (and
aggressively pulling that into fedora) is easy, it will of course get
increasingly less practical to pull that back into any long life vendor distro.
At some point, the amount of change requires a full, multi-week regression
(correctness, performance micro benchmarks & application testing). Not to
mention testing against the various vendors' NAS devices.
It is certainly quite reasonable to argue that the pNFS changes alone would
require a full regression, so we may as well pull in all of this at once if we
need to do it anyway.
Since people feel strongly supportive of this change set, I think we may as well
pull it in.
It will be great to get a sense of how others are going to test this (and
other!) changes in a comprehensive way. My concern is still that we are changing
a lot of things all at once - this change set changing the already stable bits &
the pNFS changes touching lots as well. Just a lot to digest all at once :)
Thanks!
Ric
^ permalink raw reply [flat|nested] 53+ messages in thread
* Re: [PATCH 00/31] NFS XDR clean up for 2.6.38
2010-12-16 23:05 ` Christoph Hellwig
2010-12-16 23:14 ` Ric Wheeler
2010-12-16 23:30 ` Ric Wheeler
@ 2010-12-17 12:16 ` Steve Dickson
2 siblings, 0 replies; 53+ messages in thread
From: Steve Dickson @ 2010-12-17 12:16 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: trond.myklebust, linux-nfs
On 12/16/2010 06:05 PM, Christoph Hellwig wrote:
> Steve,
>
> I think it's totally out of place to try to put back large work on the
> whole nfs client for vendor interest in an absolute fringe feature.
All I was asking for is put more priority on the pNFS work than other
major work... Basically put the pNFS work in front of everything else..
>
> I think you should at least be a bit ashamed for even putting this
> forward.
>
No... I am not and will not be ashamed of trying to help this
community, which I have been a member for a very long time,
set priorities on work that will make the community even
stronger...
steved.
^ permalink raw reply [flat|nested] 53+ messages in thread