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NFSv4: Disallow 'mount -t nfs4 -overs=2' and 'mount -t nfs4 -overs=3'
author
Trond Myklebust
<Trond.Myklebust@netapp.com>
Tue, 8 Sep 2009 23:50:07 +0000
(19:50 -0400)
committer
Trond Myklebust
<Trond.Myklebust@netapp.com>
Tue, 8 Sep 2009 23:50:07 +0000
(19:50 -0400)
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
fs/nfs/super.c
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diff --git
a/fs/nfs/super.c
b/fs/nfs/super.c
index
34b1ccf
..
867f705
100644
(file)
--- a/
fs/nfs/super.c
+++ b/
fs/nfs/super.c
@@
-2321,6
+2321,12
@@
static int nfs4_validate_text_mount_data(void *options,
nfs4_validate_mount_flags(args);
+ if (args->version != 4) {
+ dfprintk(MOUNT,
+ "NFS4: Illegal mount version\n");
+ return -EINVAL;
+ }
+
if (args->auth_flavor_len > 1) {
dfprintk(MOUNT,
"NFS4: Too many RPC auth flavours specified\n");