Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx2.netapp.com ([216.240.18.37]:1685 "EHLO mx2.netapp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755012Ab2BATAh (ORCPT ); Wed, 1 Feb 2012 14:00:37 -0500 From: Weston Andros Adamson To: Trond.Myklebust@netapp.com Cc: linux-nfs@vger.kernel.org, Weston Andros Adamson Subject: [PATCH 1/2] NFS: dont allow minorversion= opt when vers != 4 Date: Wed, 1 Feb 2012 14:00:16 -0500 Message-Id: <1328122817-661-1-git-send-email-dros@netapp.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: Don't allow invalid 'vers' and 'minorversion' combinations in mount options, such as "vers=3,minorversion=1". Signed-off-by: Weston Andros Adamson --- fs/nfs/super.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 8e210b2..50baca1 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -1519,6 +1519,9 @@ static int nfs_parse_mount_options(char *raw, if (!sloppy && invalid_option) return 0; + if (mnt->minorversion && mnt->version != 4) + goto out_minorversion_mismatch; + /* * verify that any proto=/mountproto= options match the address * familiies in the addr=/mountaddr= options. @@ -1552,6 +1555,10 @@ out_invalid_address: out_invalid_value: printk(KERN_INFO "NFS: bad mount option value specified: %s\n", p); return 0; +out_minorversion_mismatch: + printk(KERN_INFO "NFS: mount option vers=%d does not support " + "minorversion=%u\n", mnt->version, mnt->minorversion); + return 0; out_nomem: printk(KERN_INFO "NFS: not enough memory to parse option\n"); return 0; -- 1.7.4.4