(no subject)

[J. Bruce Fields]

Some minor fixes found by sparse, including one and a half actual
(minor) bugs.

--b.

[PATCH 1/6] nfsd: state.c should include current_stateid.h

[J. Bruce Fields]

From: "J. Bruce Fields" <bfields@redhat.com>

OK, admittedly I'm mainly just trying to shut sparse up.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
 fs/nfsd/nfs4state.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 14251a2..307dd9c 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -42,6 +42,7 @@
 #include <linux/sunrpc/clnt.h>
 #include "xdr4.h"
 #include "vfs.h"
+#include "current_stateid.h"
 
 #define NFSDDBG_FACILITY                NFSDDBG_PROC
 
-- 
1.7.9.5

[PATCH 2/6] nfsd4: fix missing "static"

[J. Bruce Fields]

From: "J. Bruce Fields" <bfields@redhat.com>

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
 fs/nfsd/export.c      |    2 +-
 fs/nfsd/nfs4recover.c |    2 +-
 fs/nfsd/nfs4state.c   |    2 +-
 fs/nfsd/nfs4xdr.c     |    2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index dcb52b8..ec16364 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -706,7 +706,7 @@ static struct cache_head *svc_export_alloc(void)
 		return NULL;
 }
 
-struct cache_detail svc_export_cache_template = {
+static struct cache_detail svc_export_cache_template = {
 	.owner		= THIS_MODULE,
 	.hash_size	= EXPORT_HASHMAX,
 	.name		= "nfsd.export",
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 4767429..2b8e9a9 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -1029,7 +1029,7 @@ rpc_pipefs_event(struct notifier_block *nb, unsigned long event, void *ptr)
 	return ret;
 }
 
-struct notifier_block nfsd4_cld_block = {
+static struct notifier_block nfsd4_cld_block = {
 	.notifier_call = rpc_pipefs_event,
 };
 
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 307dd9c..7fe95ec 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4052,7 +4052,7 @@ static void get_lock_access(struct nfs4_ol_stateid *lock_stp, u32 access)
 	__set_bit(access, &lock_stp->st_access_bmap);
 }
 
-__be32 lookup_or_create_lock_state(struct nfsd4_compound_state *cstate, struct nfs4_ol_stateid *ost, struct nfsd4_lock *lock, struct nfs4_ol_stateid **lst, bool *new)
+static __be32 lookup_or_create_lock_state(struct nfsd4_compound_state *cstate, struct nfs4_ol_stateid *ost, struct nfsd4_lock *lock, struct nfs4_ol_stateid **lst, bool *new)
 {
 	struct nfs4_file *fi = ost->st_file;
 	struct nfs4_openowner *oo = openowner(ost->st_stateowner);
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index bcd8904..59c5184 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3399,7 +3399,7 @@ nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
 	return 0;
 }
 
-__be32
+static __be32
 nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, int nfserr,
 			  struct nfsd4_test_stateid *test_stateid)
 {
-- 
1.7.9.5

[PATCH 3/6] nfsd4: preserve __user annotation on cld downcall msg

[J. Bruce Fields]

From: "J. Bruce Fields" <bfields@redhat.com>

Cc: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
 fs/nfsd/nfs4recover.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 2b8e9a9..260d8c8 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -570,7 +570,7 @@ static ssize_t
 cld_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
 {
 	struct cld_upcall *tmp, *cup;
-	struct cld_msg *cmsg = (struct cld_msg *)src;
+	struct cld_msg __user *cmsg = (struct cld_msg __user *)src;
 	uint32_t xid;
 	struct nfsd_net *nn = net_generic(filp->f_dentry->d_sb->s_fs_info,
 						nfsd_net_id);
-- 
1.7.9.5

[PATCH 4/6] nfsd4: int/__be32 fixes

[J. Bruce Fields]

From: "J. Bruce Fields" <bfields@redhat.com>

In each of these cases there's a simple unambiguous correct choice, and
no actual bug.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
 fs/nfsd/nfs4state.c |   22 +++++++++++-----------
 fs/nfsd/nfs4xdr.c   |   12 ++++++------
 fs/nfsd/xdr4.h      |    6 +++---
 3 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 7fe95ec..c33f052 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -886,7 +886,7 @@ static struct nfsd4_session *alloc_init_session(struct svc_rqst *rqstp, struct n
 	struct nfsd4_session *new;
 	struct nfsd4_channel_attrs *fchan = &cses->fore_channel;
 	int numslots, slotsize;
-	int status;
+	__be32 status;
 	int idx;
 
 	/*
@@ -1477,7 +1477,7 @@ nfsd4_exchange_id(struct svc_rqst *rqstp,
 		  struct nfsd4_exchange_id *exid)
 {
 	struct nfs4_client *unconf, *conf, *new;
-	int status;
+	__be32 status;
 	unsigned int		strhashval;
 	char			dname[HEXDIR_LEN];
 	char			addr_str[INET6_ADDRSTRLEN];
@@ -1599,7 +1599,7 @@ error:
 	return status;
 }
 
-static int
+static __be32
 check_slot_seqid(u32 seqid, u32 slot_seqid, int slot_inuse)
 {
 	dprintk("%s enter. seqid %d slot_seqid %d\n", __func__, seqid,
@@ -1627,7 +1627,7 @@ check_slot_seqid(u32 seqid, u32 slot_seqid, int slot_inuse)
  */
 static void
 nfsd4_cache_create_session(struct nfsd4_create_session *cr_ses,
-			   struct nfsd4_clid_slot *slot, int nfserr)
+			   struct nfsd4_clid_slot *slot, __be32 nfserr)
 {
 	slot->sl_status = nfserr;
 	memcpy(&slot->sl_cr_ses, cr_ses, sizeof(*cr_ses));
@@ -1658,7 +1658,7 @@ nfsd4_replay_create_session(struct nfsd4_create_session *cr_ses,
 				/* seqid, slotID, slotID, slotID, status */ \
 			5 ) * sizeof(__be32))
 
-static __be32 check_forechannel_attrs(struct nfsd4_channel_attrs fchannel)
+static bool check_forechannel_attrs(struct nfsd4_channel_attrs fchannel)
 {
 	return fchannel.maxreq_sz < NFSD_MIN_REQ_HDR_SEQ_SZ
 		|| fchannel.maxresp_sz < NFSD_MIN_RESP_HDR_SEQ_SZ;
@@ -1674,7 +1674,7 @@ nfsd4_create_session(struct svc_rqst *rqstp,
 	struct nfsd4_session *new;
 	struct nfsd4_clid_slot *cs_slot = NULL;
 	bool confirm_me = false;
-	int status = 0;
+	__be32 status = 0;
 
 	if (cr_ses->flags & ~SESSION4_FLAG_MASK_A)
 		return nfserr_inval;
@@ -1819,7 +1819,7 @@ nfsd4_destroy_session(struct svc_rqst *r,
 		      struct nfsd4_destroy_session *sessionid)
 {
 	struct nfsd4_session *ses;
-	u32 status = nfserr_badsession;
+	__be32 status = nfserr_badsession;
 
 	/* Notes:
 	 * - The confirmed nfs4_client->cl_sessionid holds destroyed sessinid
@@ -1915,7 +1915,7 @@ nfsd4_sequence(struct svc_rqst *rqstp,
 	struct nfsd4_session *session;
 	struct nfsd4_slot *slot;
 	struct nfsd4_conn *conn;
-	int status;
+	__be32 status;
 
 	if (resp->opcnt != 1)
 		return nfserr_sequence_pos;
@@ -2020,7 +2020,7 @@ __be32
 nfsd4_destroy_clientid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_destroy_clientid *dc)
 {
 	struct nfs4_client *conf, *unconf, *clp;
-	int status = 0;
+	__be32 status = 0;
 
 	nfs4_lock_state();
 	unconf = find_unconfirmed_client(&dc->clientid);
@@ -2056,7 +2056,7 @@ out:
 __be32
 nfsd4_reclaim_complete(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_reclaim_complete *rc)
 {
-	int status = 0;
+	__be32 status = 0;
 
 	if (rc->rca_one_fs) {
 		if (!cstate->current_fh.fh_dentry)
@@ -3378,7 +3378,7 @@ static bool stateid_generation_after(stateid_t *a, stateid_t *b)
 	return (s32)a->si_generation - (s32)b->si_generation > 0;
 }
 
-static int check_stateid_generation(stateid_t *in, stateid_t *ref, bool has_session)
+static __be32 check_stateid_generation(stateid_t *in, stateid_t *ref, bool has_session)
 {
 	/*
 	 * When sessions are used the stateid generation number is ignored
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 59c5184..f7cc411 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3251,7 +3251,7 @@ nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_w
 }
 
 static __be32
-nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr,
+nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr,
 			 struct nfsd4_exchange_id *exid)
 {
 	__be32 *p;
@@ -3306,7 +3306,7 @@ nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr,
 }
 
 static __be32
-nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr,
+nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr,
 			    struct nfsd4_create_session *sess)
 {
 	__be32 *p;
@@ -3355,7 +3355,7 @@ nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr,
 }
 
 static __be32
-nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr,
+nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, __be32 nfserr,
 			     struct nfsd4_destroy_session *destroy_session)
 {
 	return nfserr;
@@ -3377,7 +3377,7 @@ nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, int nfserr,
 }
 
 static __be32
-nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
+nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr,
 		      struct nfsd4_sequence *seq)
 {
 	__be32 *p;
@@ -3400,7 +3400,7 @@ nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
 }
 
 static __be32
-nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, int nfserr,
+nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr,
 			  struct nfsd4_test_stateid *test_stateid)
 {
 	struct nfsd4_test_stateid_id *stateid, *next;
@@ -3503,7 +3503,7 @@ static nfsd4_enc nfsd4_enc_ops[] = {
  * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so
  * will be at least a page and will therefore hold the xdr_buf head.
  */
-int nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad)
+__be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad)
 {
 	struct xdr_buf *xb = &resp->rqstp->rq_res;
 	struct nfsd4_session *session = NULL;
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index 2a55814..c3a8aa1 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -60,7 +60,7 @@ struct nfsd4_compound_state {
 	__be32			*datap;
 	size_t			iovlen;
 	u32			minorversion;
-	u32			status;
+	__be32			status;
 	stateid_t	current_stateid;
 	stateid_t	save_stateid;
 	/* to indicate current and saved state id presents */
@@ -364,7 +364,7 @@ struct nfsd4_test_stateid_id {
 };
 
 struct nfsd4_test_stateid {
-	__be32		ts_num_ids;
+	u32		ts_num_ids;
 	struct list_head ts_stateid_list;
 };
 
@@ -549,7 +549,7 @@ int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *,
 		struct nfsd4_compoundargs *);
 int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *,
 		struct nfsd4_compoundres *);
-int nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
+__be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
 void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
 void nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op);
 __be32 nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
-- 
1.7.9.5

[PATCH 5/6] nfsd4: fix free_stateid return endianness

[J. Bruce Fields]

From: "J. Bruce Fields" <bfields@redhat.com>

Cc: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
 fs/nfsd/nfs4xdr.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index f7cc411..f839be1 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -3362,7 +3362,7 @@ nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, __be32 nfserr,
 }
 
 static __be32
-nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, int nfserr,
+nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, __be32 nfserr,
 			  struct nfsd4_free_stateid *free_stateid)
 {
 	__be32 *p;
@@ -3371,7 +3371,7 @@ nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, int nfserr,
 		return nfserr;
 
 	RESERVE_SPACE(4);
-	WRITE32(nfserr);
+	*p++ = nfserr;
 	ADJUST_ARGS();
 	return nfserr;
 }
-- 
1.7.9.5

[PATCH 6/6] nfsd4: fix change attribute endianness

[J. Bruce Fields]

From: "J. Bruce Fields" <bfields@redhat.com>

Though actually this doesn't matter much, as NFSv4.0 clients are
required to treat the change attribute as opaque.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
 fs/nfsd/nfs4xdr.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index f839be1..61555e7 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1674,12 +1674,12 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
 
 static void write32(__be32 **p, u32 n)
 {
-	*(*p)++ = n;
+	*(*p)++ = htonl(n);
 }
 
 static void write64(__be32 **p, u64 n)
 {
-	write32(p, (u32)(n >> 32));
+	write32(p, (n >> 32));
 	write32(p, (u32)n);
 }
 
-- 
1.7.9.5

Re: [PATCH 3/6] nfsd4: preserve __user annotation on cld downcall msg

[Jeff Layton]

On Tue,  1 May 2012 11:45:46 -0400
"J. Bruce Fields" <bfields@redhat.com> wrote:

> From: "J. Bruce Fields" <bfields@redhat.com>
> 
> Cc: Jeff Layton <jlayton@redhat.com>
> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
> ---
>  fs/nfsd/nfs4recover.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
> index 2b8e9a9..260d8c8 100644
> --- a/fs/nfsd/nfs4recover.c
> +++ b/fs/nfsd/nfs4recover.c
> @@ -570,7 +570,7 @@ static ssize_t
>  cld_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
>  {
>  	struct cld_upcall *tmp, *cup;
> -	struct cld_msg *cmsg = (struct cld_msg *)src;
> +	struct cld_msg __user *cmsg = (struct cld_msg __user *)src;
>  	uint32_t xid;
>  	struct nfsd_net *nn = net_generic(filp->f_dentry->d_sb->s_fs_info,
>  						nfsd_net_id);

Good catch...

Reviewed-by: Jeff Layton <jlayton@redhat.com>