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[RFC,12/35] NFSv4.2: query the extended attribute access bits

Message ID ca85022779012228d7df42c5122c52b1afca1f8c.1568309119.git.fllinden@amazon.com (mailing list archive)
State New, archived
Headers show
Series user xattr support (RFC8276) | expand

Commit Message

Frank van der Linden Aug. 27, 2019, 4:01 p.m. UTC 
RFC 8276 defines seperate 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(+)
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Patch

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index e7f4c25de362..78bc808addc9 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -2498,6 +2498,10 @@  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 dad22450546d..029b07fef37f 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1313,6 +1313,12 @@  static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
 				NFS4_ACCESS_MODIFY |
 				NFS4_ACCESS_EXTEND |
 				NFS4_ACCESS_EXECUTE;
+#ifdef CONFIG_NFS_V4_XATTR
+			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;