[PATCH 3.5 55/88] nfs4.1: properly handle ENOTSUP in SECINFO_NO_NAME

From: Luis Henriques
Date: Fri Feb 07 2014 - 06:37:22 EST


3.5.7.30 -stable review patch. If anyone has any objections, please let me know.

------------------

From: Weston Andros Adamson <dros@xxxxxxxxxxxxxxx>

commit 78b19bae0813bd6f921ca58490196abd101297bd upstream.

Don't check for -NFS4ERR_NOTSUPP, it's already been mapped to -ENOTSUPP
by nfs4_stat_to_errno.

This allows the client to mount v4.1 servers that don't support
SECINFO_NO_NAME by falling back to the "guess and check" method of
nfs4_find_root_sec.

Signed-off-by: Weston Andros Adamson <dros@xxxxxxxxxxxxxxx>
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
---
fs/nfs/nfs4proc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 4bb79e7..69fd66a 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -6578,7 +6578,7 @@ nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
switch (err) {
case 0:
case -NFS4ERR_WRONGSEC:
- case -NFS4ERR_NOTSUPP:
+ case -ENOTSUPP:
goto out;
default:
err = nfs4_handle_exception(server, err, &exception);
@@ -6610,7 +6610,7 @@ nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
* Fall back on "guess and check" method if
* the server doesn't support SECINFO_NO_NAME
*/
- if (err == -NFS4ERR_WRONGSEC || err == -NFS4ERR_NOTSUPP) {
+ if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) {
err = nfs4_find_root_sec(server, fhandle, info);
goto out_freepage;
}
--
1.8.3.2

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