diff mbox series

[07/13] NFSv4.2: query the extended attribute access bits

Message ID 20200311195613.26108-8-fllinden@amazon.com (mailing list archive)
State New, archived
Headers show
Series client side user xattr (RFC8276) support | expand

Commit Message

Frank van der Linden March 11, 2020, 7:56 p.m. UTC 
RFC 8276 defines separate ACCESS bits for extended attribute checking.
Query them in nfs_do_access and opendata.

Signed-off-by: Frank van der Linden <fllinden@amazon.com>
---
 fs/nfs/dir.c      | 4 ++++
 fs/nfs/nfs4proc.c | 6 ++++++
 2 files changed, 10 insertions(+)
diff mbox series

Patch

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index a0b564781e3e..bd2606539299 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -2646,6 +2646,10 @@  static int nfs_do_access(struct inode *inode, const struct cred *cred, int mask)
 	 * Determine which access bits we want to ask for...
 	 */
 	cache.mask = NFS_ACCESS_READ | NFS_ACCESS_MODIFY | NFS_ACCESS_EXTEND;
+	if (nfs_server_capable(inode, NFS_CAP_XATTR)) {
+		cache.mask |= NFS_ACCESS_XAREAD | NFS_ACCESS_XAWRITE |
+		    NFS_ACCESS_XALIST;
+	}
 	if (S_ISDIR(inode->i_mode))
 		cache.mask |= NFS_ACCESS_DELETE | NFS_ACCESS_LOOKUP;
 	else
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 47bbd7db9d18..da72237c6933 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1340,6 +1340,12 @@  static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
 				NFS4_ACCESS_MODIFY |
 				NFS4_ACCESS_EXTEND |
 				NFS4_ACCESS_EXECUTE;
+#ifdef CONFIG_NFS_V4_2
+			if (server->caps & NFS_CAP_XATTR)
+				p->o_arg.access |= NFS4_ACCESS_XAREAD |
+				    NFS4_ACCESS_XAWRITE |
+				    NFS4_ACCESS_XALIST;
+#endif
 		}
 	}
 	p->o_arg.clientid = server->nfs_client->cl_clientid;