Message ID | 20190329111104.17223-5-berrange@redhat.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org> Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 73DFF1390 for <patchwork-qemu-devel@patchwork.kernel.org>; Fri, 29 Mar 2019 11:16:06 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5F00D28A95 for <patchwork-qemu-devel@patchwork.kernel.org>; Fri, 29 Mar 2019 11:16:06 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5173128ACE; Fri, 29 Mar 2019 11:16:06 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 41A9328A95 for <patchwork-qemu-devel@patchwork.kernel.org>; Fri, 29 Mar 2019 11:16:05 +0000 (UTC) Received: from localhost ([127.0.0.1]:50919 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from <qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org>) id 1h9pUS-0007jl-GC for patchwork-qemu-devel@patchwork.kernel.org; Fri, 29 Mar 2019 07:16:04 -0400 Received: from eggs.gnu.org ([209.51.188.92]:49123) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from <berrange@redhat.com>) id 1h9pQP-0003fj-0O for qemu-devel@nongnu.org; Fri, 29 Mar 2019 07:11:55 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <berrange@redhat.com>) id 1h9pQI-0007lU-Kd for qemu-devel@nongnu.org; Fri, 29 Mar 2019 07:11:50 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38968) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from <berrange@redhat.com>) id 1h9pQG-00078V-CZ; Fri, 29 Mar 2019 07:11:45 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id EEF80C0B6178; Fri, 29 Mar 2019 11:11:39 +0000 (UTC) Received: from dhcp-17-117.lcy.redhat.com (unknown [10.42.17.117]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2D4C460BFB; Fri, 29 Mar 2019 11:11:29 +0000 (UTC) From: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= <berrange@redhat.com> To: qemu-devel@nongnu.org Date: Fri, 29 Mar 2019 11:10:54 +0000 Message-Id: <20190329111104.17223-5-berrange@redhat.com> In-Reply-To: <20190329111104.17223-1-berrange@redhat.com> References: <20190329111104.17223-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Fri, 29 Mar 2019 11:11:40 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 04/14] linux-user: avoid string truncation warnings in uname field copying X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: <qemu-devel.nongnu.org> List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe> List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel/> List-Post: <mailto:qemu-devel@nongnu.org> List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help> List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=subscribe> Cc: Eric Farman <farman@linux.ibm.com>, Farhan Ali <alifm@linux.ibm.com>, David Hildenbrand <david@redhat.com>, Cornelia Huck <cohuck@redhat.com>, Alex Williamson <alex.williamson@redhat.com>, Laurent Vivier <laurent@vivier.eu>, Halil Pasic <pasic@linux.ibm.com>, Max Filippov <jcmvbkbc@gmail.com>, qemu-s390x@nongnu.org, Gerd Hoffmann <kraxel@redhat.com>, Thomas Huth <thuth@redhat.com>, Riku Voipio <riku.voipio@iki.fi>, Christian Borntraeger <borntraeger@de.ibm.com>, Richard Henderson <rth@twiddle.net> Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org> X-Virus-Scanned: ClamAV using ClamSMTP |
Series |
misc set of fixes for warnings under GCC 9
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expand
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diff --git a/linux-user/uname.c b/linux-user/uname.c index 313b79dbad..3dff33effe 100644 --- a/linux-user/uname.c +++ b/linux-user/uname.c @@ -73,7 +73,7 @@ const char *cpu_to_uname_machine(void *cpu_env) #define COPY_UTSNAME_FIELD(dest, src) \ do { \ /* __NEW_UTS_LEN doesn't include terminating null */ \ - (void) strncpy((dest), (src), __NEW_UTS_LEN); \ + memcpy((dest), (src), MIN(sizeof(src), __NEW_UTS_LEN)); \ (dest)[__NEW_UTS_LEN] = '\0'; \ } while (0)
In file included from /usr/include/string.h:494, from include/qemu/osdep.h:101, from linux-user/uname.c:20: In function ‘strncpy’, inlined from ‘sys_uname’ at linux-user/uname.c:94:3: /usr/include/bits/string_fortified.h:106:10: warning: ‘__builtin_strncpy’ output may be truncated copying 64 bytes from a string of length 64 [-Wstringop-truncation] 106 | return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We don't care where the NUL terminator in the original uname field was. It suffices to copy the entire original field and simply force a NUL terminator at the end of the new field. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> --- linux-user/uname.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)