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{ "id": 814193, "url": "http://patchwork.ozlabs.org/api/covers/814193/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20170915101008.16646-1-kwolf@redhat.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170915101008.16646-1-kwolf@redhat.com>", "list_archive_url": null, "date": "2017-09-15T10:10:02", "name": "[0/6] block: Fix permissions after ro/rw reopen", "submitter": { "id": 2714, "url": "http://patchwork.ozlabs.org/api/people/2714/?format=api", "name": "Kevin Wolf", "email": "kwolf@redhat.com" }, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20170915101008.16646-1-kwolf@redhat.com/mbox/", "series": [ { "id": 3264, "url": "http://patchwork.ozlabs.org/api/series/3264/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=3264", "date": "2017-09-15T10:10:02", "name": "block: Fix permissions after ro/rw reopen", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/3264/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/814193/comments/", "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=<UNKNOWN>)", "ext-mx09.extmail.prod.ext.phx2.redhat.com;\n\tdmarc=none (p=none dis=none) header.from=redhat.com", "ext-mx09.extmail.prod.ext.phx2.redhat.com;\n\tspf=fail smtp.mailfrom=kwolf@redhat.com" ], "Received": [ "from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xtrlM1GM5z9sxR\n\tfor <incoming@patchwork.ozlabs.org>;\n\tFri, 15 Sep 2017 20:11:11 +1000 (AEST)", "from localhost ([::1]:52338 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>)\n\tid 1dsnaX-0002BK-7L\n\tfor incoming@patchwork.ozlabs.org; Fri, 15 Sep 2017 06:11:09 -0400", "from eggs.gnu.org ([2001:4830:134:3::10]:37256)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from <kwolf@redhat.com>) id 1dsnZo-00026R-Ls\n\tfor qemu-devel@nongnu.org; Fri, 15 Sep 2017 06:10:28 -0400", "from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from <kwolf@redhat.com>) id 1dsnZn-0004Ic-PX\n\tfor qemu-devel@nongnu.org; Fri, 15 Sep 2017 06:10:24 -0400", "from mx1.redhat.com ([209.132.183.28]:51696)\n\tby eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)\n\t(Exim 4.71) (envelope-from <kwolf@redhat.com>)\n\tid 1dsnZg-00049A-TF; Fri, 15 Sep 2017 06:10:17 -0400", "from smtp.corp.redhat.com\n\t(int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16])\n\t(using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby mx1.redhat.com (Postfix) with ESMTPS id 216144E4CB;\n\tFri, 15 Sep 2017 10:10:15 +0000 (UTC)", "from localhost.localdomain.com (ovpn-117-157.ams2.redhat.com\n\t[10.36.117.157])\n\tby smtp.corp.redhat.com (Postfix) with ESMTP id C05D966D5F;\n\tFri, 15 Sep 2017 10:10:10 +0000 (UTC)" ], "DMARC-Filter": "OpenDMARC Filter v1.3.2 mx1.redhat.com 216144E4CB", "From": "Kevin Wolf <kwolf@redhat.com>", "To": "qemu-block@nongnu.org", "Date": "Fri, 15 Sep 2017 12:10:02 +0200", "Message-Id": "<20170915101008.16646-1-kwolf@redhat.com>", "X-Scanned-By": "MIMEDefang 2.79 on 10.5.11.16", "X-Greylist": "Sender IP whitelisted, not delayed by milter-greylist-4.5.16\n\t(mx1.redhat.com [10.5.110.38]);\n\tFri, 15 Sep 2017 10:10:15 +0000 (UTC)", "X-detected-operating-system": "by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]\n\t[fuzzy]", "X-Received-From": "209.132.183.28", "Subject": "[Qemu-devel] [PATCH 0/6] block: Fix permissions after ro/rw reopen", "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>,\n\t<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>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Cc": "kwolf@redhat.com, famz@redhat.com, qemu-devel@nongnu.org,\n\tmreitz@redhat.com", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "\"Qemu-devel\"\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>" }, "content": "bdrv_reopen() can switch nodes between read-only and read-write modes.\nThis has implications for the required permissions on their child nodes.\nFor example, a qcow2 node requests write permissions on bs->file only if\nit is writable itself.\n\nThis means that during bdrv_reopen(), the permissions need to be\nrecalculated in order to prevent failures where the bs->file\npermissions don't match its actual read-only state (e.g. bs->file is a\nread-write node, but the permission still enforces read-only access).\n\nKevin Wolf (6):\n qemu-io: Reset qemuio_blk permissions before each command\n block: Add reopen_queue to bdrv_child_perm()\n block: Add reopen queue to bdrv_check_perm()\n block: Base permissions on rw state after reopen\n block: reopen: Queue children after their parents\n block: Fix permissions after bdrv_reopen()\n\n include/block/block.h | 2 +-\n include/block/block_int.h | 7 ++\n block.c | 191 +++++++++++++++++++++++++++++++++------------\n block/commit.c | 1 +\n block/mirror.c | 1 +\n block/replication.c | 1 +\n block/vvfat.c | 1 +\n qemu-io.c | 13 +++\n tests/qemu-iotests/187.out | 2 +-\n 9 files changed, 169 insertions(+), 50 deletions(-)" }