From patchwork Wed Nov 25 15:42:13 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kara X-Patchwork-Id: 7700431 Return-Path: X-Original-To: patchwork-linux-fsdevel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 757169F1BE for ; Wed, 25 Nov 2015 15:42:42 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B18EC207A6 for ; Wed, 25 Nov 2015 15:42:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9C58D20762 for ; Wed, 25 Nov 2015 15:42:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752270AbbKYPmg (ORCPT ); Wed, 25 Nov 2015 10:42:36 -0500 Received: from mx2.suse.de ([195.135.220.15]:52195 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751198AbbKYPma (ORCPT ); Wed, 25 Nov 2015 10:42:30 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 71E14AC01; Wed, 25 Nov 2015 15:40:48 +0000 (UTC) Received: by quack.suse.cz (Postfix, from userid 1000) id 3FF5382827; Wed, 25 Nov 2015 16:42:27 +0100 (CET) From: Jan Kara To: OGAWA Hirofumi Cc: linux-fsdevel@vger.kernel.org, list0570@paradise.net.nz, Jan Kara Subject: [PATCH] fat: Allow time_offset to be upto 13 hours Date: Wed, 25 Nov 2015 16:42:13 +0100 Message-Id: <1448466133-2838-1-git-send-email-jack@suse.cz> X-Mailer: git-send-email 2.1.4 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Currently we limit values of time_offset mount option to be between -12 and 12 hours. However e.g. zone GMT+12 can have a DST correction on top which makes the total time difference 13 hours. Update the checks in mount option parsing to allow offset of upto 13 hours. Reported-by: Volker Kuhlmann Signed-off-by: Jan Kara --- fs/fat/inode.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 509411dd3698..2041031ab1c8 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -1146,7 +1146,11 @@ static int parse_options(struct super_block *sb, char *options, int is_vfat, case Opt_time_offset: if (match_int(&args[0], &option)) return -EINVAL; - if (option < -12 * 60 || option > 12 * 60) + /* + * Allow for GMT+-12 zones to have DST like + * corrections + */ + if (option < -13 * 60 || option > 13 * 60) return -EINVAL; opts->tz_set = 1; opts->time_offset = option;