From nobody Mon Feb 9 06:49:22 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.zoho.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 1491417186215552.9361882997198; Wed, 5 Apr 2017 11:33:06 -0700 (PDT) Received: from localhost ([::1]:41837 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cvpjt-00014I-14 for importer@patchew.org; Wed, 05 Apr 2017 14:33:05 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34138) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cvpgC-0006gA-27 for qemu-devel@nongnu.org; Wed, 05 Apr 2017 14:29:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cvpgB-00029s-AY for qemu-devel@nongnu.org; Wed, 05 Apr 2017 14:29:16 -0400 Received: from mx1.redhat.com ([209.132.183.28]:58316) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cvpg7-00028i-9R; Wed, 05 Apr 2017 14:29:11 -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 2BE18C04B94F; Wed, 5 Apr 2017 18:29:10 +0000 (UTC) Received: from localhost (ovpn-116-76.phx2.redhat.com [10.3.116.76]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6D20A17B69; Wed, 5 Apr 2017 18:29:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 2BE18C04B94F Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jcody@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 2BE18C04B94F From: Jeff Cody To: qemu-devel@nongnu.org Date: Wed, 5 Apr 2017 14:28:45 -0400 Message-Id: <6c82b83fae72a5b5909993f0cf65a90f12efb669.1491416061.git.jcody@redhat.com> In-Reply-To: References: In-Reply-To: References: 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 [10.5.110.31]); Wed, 05 Apr 2017 18:29:10 +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] [PATCH for-2.10 3/9] block: honor BDRV_O_ALLOW_RDWR when clearing bs->read_only 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: kwolf@redhat.com, jsnow@redhat.com, stefanha@redhat.com, qemu-block@nongnu.org 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" The BDRV_O_ALLOW_RDWR flag allows / prohibits the changing of the BDS 'read_only' state, but there are a few places where it is ignored. In the bdrv_set_read_only() helper, make sure to honor the flag. Signed-off-by: Jeff Cody --- block.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/block.c b/block.c index f60d5ea..4a61ff0 100644 --- a/block.c +++ b/block.c @@ -201,6 +201,13 @@ int bdrv_set_read_only(BlockDriverState *bs, bool read= _only, Error **errp) return -EINVAL; } =20 + /* Do not clear read_only if it is prohibited */ + if (!read_only && !(bs->open_flags & BDRV_O_ALLOW_RDWR)) { + error_setg(errp, "Node '%s' is read only", + bdrv_get_device_or_node_name(bs)); + return -EPERM; + } + bs->read_only =3D read_only; return 0; } --=20 2.9.3