From 2ecda72b49a0849ce41e7fa1fa974a245b9119f8 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 8 Sep 2009 19:50:07 -0400 Subject: [PATCH] NFSv4: Disallow 'mount -t nfs4 -overs=2' and 'mount -t nfs4 -overs=3' Signed-off-by: Trond Myklebust --- fs/nfs/super.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 34b1ccf51adf..867f70504531 100644 --- 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"); -- GitLab