NFSv4: Map NFS4ERR_SHARE_DENIED into an EACCES error instead of EIO

If a file OPEN is denied due to a share lock, the resulting
NFS4ERR_SHARE_DENIED is currently mapped to the default EIO.
This patch adds a more appropriate mapping, and brings Linux
into line with what Solaris 10 does.

See https://bugzilla.kernel.org/show_bug.cgi?id=43286

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@vger.kernel.org

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index af2db2c..42d9e9c 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -103,6 +103,8 @@ static int nfs4_map_errors(int err)
        case -NFS4ERR_BADOWNER:
        case -NFS4ERR_BADNAME:
                return -EINVAL;
+       case -NFS4ERR_SHARE_DENIED:
+               return -EACCES;
        default:
                dprintk("%s could not handle NFSv4 error %d\n",
                                __func__, -err);