From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.5 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C9A7CC64EB8 for ; Wed, 3 Oct 2018 15:10:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 992E42098A for ; Wed, 3 Oct 2018 15:10:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 992E42098A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727183AbeJCV7Q (ORCPT ); Wed, 3 Oct 2018 17:59:16 -0400 Received: from mga18.intel.com ([134.134.136.126]:12865 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726748AbeJCV7Q (ORCPT ); Wed, 3 Oct 2018 17:59:16 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 Oct 2018 08:10:28 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,336,1534834800"; d="scan'208";a="75106581" Received: from gnu-4.sc.intel.com ([172.25.70.231]) by fmsmga007.fm.intel.com with ESMTP; 03 Oct 2018 08:10:23 -0700 From: "H.J. Lu" To: linux-kernel@vger.kernel.org Subject: [PATCH] Fix compat_sys_preadv64v2/compat_sys_pwritev64v2 Date: Wed, 3 Oct 2018 08:10:23 -0700 Message-Id: <20181003151023.26686-1-hjl.tools@gmail.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Update compat_sys_preadv64v2 and compat_sys_pwritev64v2 to handle the offset argument == -1, which should use and update the the current file offset. Signed-off-by: H.J. Lu --- fs/read_write.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/read_write.c b/fs/read_write.c index 153f8f690490..c1d183862c13 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -1241,6 +1241,9 @@ COMPAT_SYSCALL_DEFINE5(preadv64v2, unsigned long, fd, const struct compat_iovec __user *,vec, unsigned long, vlen, loff_t, pos, rwf_t, flags) { + if (pos == -1) + return do_compat_readv(fd, vec, vlen, flags); + return do_compat_preadv64(fd, vec, vlen, pos, flags); } #endif @@ -1347,6 +1350,9 @@ COMPAT_SYSCALL_DEFINE5(pwritev64v2, unsigned long, fd, const struct compat_iovec __user *,vec, unsigned long, vlen, loff_t, pos, rwf_t, flags) { + if (pos == -1) + return do_compat_writev(fd, vec, vlen, flags); + return do_compat_pwritev64(fd, vec, vlen, pos, flags); } #endif -- 2.17.1