From nobody Mon Feb 9 11:51:16 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1505462955106819.4404381703339; Fri, 15 Sep 2017 01:09:15 -0700 (PDT) Received: from localhost ([::1]:51850 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dslgX-0005Rx-WB for importer@patchew.org; Fri, 15 Sep 2017 04:09:14 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54834) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dslae-00083R-IL for qemu-devel@nongnu.org; Fri, 15 Sep 2017 04:03:09 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dslaY-0000nk-JH for qemu-devel@nongnu.org; Fri, 15 Sep 2017 04:03:08 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48334) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dslaY-0000mi-Ak for qemu-devel@nongnu.org; Fri, 15 Sep 2017 04:03:02 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 50AEC5D697; Fri, 15 Sep 2017 08:03:01 +0000 (UTC) Received: from thh440s.redhat.com (ovpn-116-76.ams2.redhat.com [10.36.116.76]) by smtp.corp.redhat.com (Postfix) with ESMTP id 87F7568B1F; Fri, 15 Sep 2017 08:02:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 50AEC5D697 Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=thuth@redhat.com From: Thomas Huth To: qemu-devel@nongnu.org Date: Fri, 15 Sep 2017 10:02:29 +0200 Message-Id: <1505462549-27298-10-git-send-email-thuth@redhat.com> In-Reply-To: <1505462549-27298-1-git-send-email-thuth@redhat.com> References: <1505462549-27298-1-git-send-email-thuth@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Fri, 15 Sep 2017 08:03:01 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 9/9] qtest: Avoid passing raw strings through hmp() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , "Dr. David Alan Gilbert" , Peter Xu , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , John Snow Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Eric Blake hmp() passes its string argument through the sprintf() family; with a proper attribute, gcc -Wformat warns us when we do something dangerous like passing a non-constant format string. Fortunately, all our strings were safe, but checking whether the string can contain an unintended % is easy to avoid and therefore worth doing. Signed-off-by: Eric Blake Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Thomas Huth Signed-off-by: Thomas Huth --- tests/libqtest.h | 8 ++++---- tests/test-hmp.c | 4 ++-- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/tests/libqtest.h b/tests/libqtest.h index 44803d7..86b3a3b 100644 --- a/tests/libqtest.h +++ b/tests/libqtest.h @@ -134,14 +134,14 @@ QDict *qtest_qmp_eventwait_ref(QTestState *s, const c= har *event); /** * qtest_hmp: * @s: #QTestState instance to operate on. - * @fmt...: HMP command to send to QEMU + * @fmt...: HMP command to send to QEMU, formats arguments like sprintf(). * * Send HMP command to QEMU via QMP's human-monitor-command. * QMP events are discarded. * * Returns: the command's output. The caller should g_free() it. */ -char *qtest_hmp(QTestState *s, const char *fmt, ...); +char *qtest_hmp(QTestState *s, const char *fmt, ...) GCC_FMT_ATTR(2, 3); =20 /** * qtest_hmpv: @@ -592,13 +592,13 @@ static inline QDict *qmp_eventwait_ref(const char *ev= ent) =20 /** * hmp: - * @fmt...: HMP command to send to QEMU + * @fmt...: HMP command to send to QEMU, formats arguments like sprintf(). * * Send HMP command to QEMU via QMP's human-monitor-command. * * Returns: the command's output. The caller should g_free() it. */ -char *hmp(const char *fmt, ...); +char *hmp(const char *fmt, ...) GCC_FMT_ATTR(1, 2); =20 /** * get_irq: diff --git a/tests/test-hmp.c b/tests/test-hmp.c index 4156d61..5677fbf 100644 --- a/tests/test-hmp.c +++ b/tests/test-hmp.c @@ -81,7 +81,7 @@ static void test_commands(void) if (verbose) { fprintf(stderr, "\t%s\n", hmp_cmds[i]); } - response =3D hmp(hmp_cmds[i]); + response =3D hmp("%s", hmp_cmds[i]); g_free(response); } =20 @@ -104,7 +104,7 @@ static void test_info_commands(void) if (verbose) { fprintf(stderr, "\t%s\n", info); } - resp =3D hmp(info); + resp =3D hmp("%s", info); g_free(resp); /* And move forward to the next line */ info =3D strchr(endp + 1, '\n'); --=20 1.8.3.1