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Subject[ 24/82] NFSv4: Map NFS4ERR_SHARE_DENIED into an EACCES error instead of EIO
3.2-stable review patch.  If anyone has any objections, please let me know.

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

From: Trond Myklebust <Trond.Myklebust@netapp.com>

commit fb13bfa7e1bcfdcfdece47c24b62f1a1cad957e9 upstream.

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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
fs/nfs/nfs4proc.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index af2db2c..42d9e9c 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);



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