From: Greg Kroah-Hartman <gre...@linuxfoundation.org>
From: Ondrej Mosnacek <omosn...@redhat.com>
[ Upstream commit 53cb245454df5b13d7063162afd7a785aed6ebf2 ]
An xattr 'get' handler is expected to return the length of the value on
success, yet _nfs4_get_security_label() (and consequently also
nfs4_xattr_get_nfs4_label(), which is used as an xattr handler) returns
just 0 on success.
Fix this by returning label.len instead, which contains the length of
the result.
Fixes: aa9c2669626c ("NFS: Client implementation of Labeled-NFS")
Signed-off-by: Ondrej Mosnacek <omosn...@redhat.com>
Reviewed-by: James Morris <jamor...@linux.microsoft.com>
Reviewed-by: Paul Moore <p...@paul-moore.com>
Signed-off-by: Anna Schumaker <anna.schuma...@netapp.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
fs/nfs/nfs4proc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 2abdb2070c87..0cebe0ca03b2 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -5218,7 +5218,7 @@ static int _nfs4_get_security_label(struct inode *inode,
void *buf,
return ret;
if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL))
return -ENOENT;
- return 0;
+ return label.len;
}
static int nfs4_get_security_label(struct inode *inode, void *buf,
--
2.30.1
