From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Mon, 28 May 2012 15:36:28 +0000 (-0400)
Subject: NFSv4: Map NFS4ERR_SHARE_DENIED into an EACCES error instead of EIO
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=fb13bfa7e1bcfdcfdece47c24b62f1a1cad957e9;p=openwrt%2Fstaging%2Fblogic.git

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 af2db2c49c5f..42d9e9ca7d2f 100644
--- 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);