[PATCH 10/14] nfsd: implement the xattr procedure functions.

Frank van der Linden
2020-03-11T20:00:01Z

Implement the main entry points for the *XATTR operations.

Signed-off-by: Frank van der Linden <fllinden@amazon.com>
---
fs/nfsd/nfs4proc.c | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
fs/nfsd/nfs4xdr.c | 2 ++
2 files changed, 75 insertions(+)

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index b573ae1121af..a76b9025a357 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -2098,6 +2098,79 @@ nfsd4_layoutreturn(struct svc_rqst *rqstp,
}
#endif /* CONFIG_NFSD_PNFS */

+static __be32
+nfsd4_getxattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ union nfsd4_op_u *u)
+{
+ struct nfsd4_getxattr *getxattr = &u->getxattr;
+
+ return nfsd_getxattr(rqstp, &cstate->current_fh,
+ getxattr->getxa_name, getxattr->getxa_buf,
+ &getxattr->getxa_len);
+}
+
+static __be32
+nfsd4_setxattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ union nfsd4_op_u *u)
+{
+ struct nfsd4_setxattr *setxattr = &u->setxattr;
+ int ret;
+
+ if (opens_in_grace(SVC_NET(rqstp)))
+ return nfserr_grace;
+
+ ret = nfsd_setxattr(rqstp, &cstate->current_fh, setxattr->setxa_name,
+ setxattr->setxa_buf, setxattr->setxa_len,
+ setxattr->setxa_flags);
+
+ if (!ret)
+ set_change_info(&setxattr->setxa_cinfo, &cstate->current_fh);
+
+ return ret;
+}
+
+static __be32
+nfsd4_listxattrs(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ union nfsd4_op_u *u)
+{
+ int ret, len;
+
+ /*
+ * Get the entire list, then copy out only the user attributes
+ * in the encode function. lsxa_buf was previously allocated as
+ * tmp svc space, and will be automatically freed later.
+ */
+ len = XATTR_LIST_MAX;
+
+ ret = nfsd_listxattr(rqstp, &cstate->current_fh, u->listxattrs.lsxa_buf,
+ &len);
+ if (ret)
+ return ret;
+
+ u->listxattrs.lsxa_len = len;
+
+ return nfs_ok;
+}
+
+static __be32
+nfsd4_removexattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ union nfsd4_op_u *u)
+{
+ struct nfsd4_removexattr *removexattr = &u->removexattr;
+ int ret;
+
+ if (opens_in_grace(SVC_NET(rqstp)))
+ return nfserr_grace;
+
+ ret = nfsd_removexattr(rqstp, &cstate->current_fh,
+ removexattr->rmxa_name);
+
+ if (!ret)
+ set_change_info(&removexattr->rmxa_cinfo, &cstate->current_fh);
+
+ return ret;
+}
+
/*
* NULL call.
*/
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index f6322add2992..b12d7ac6f52c 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -41,6 +41,8 @@
#include <linux/pagemap.h>
#include <linux/sunrpc/svcauth_gss.h>
#include <linux/sunrpc/addr.h>
+#include <linux/xattr.h>
+#include <uapi/linux/xattr.h>

#include "idmap.h"
#include "acl.h"
--
2.16.6