From patchwork Tue Feb 1 14:42:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hanna Czenczek X-Patchwork-Id: 12731998 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 63CD1C433EF for ; Tue, 1 Feb 2022 16:13:24 +0000 (UTC) Received: from localhost ([::1]:43030 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nEvmV-0006lt-Hx for qemu-devel@archiver.kernel.org; Tue, 01 Feb 2022 11:13:23 -0500 Received: from eggs.gnu.org ([209.51.188.92]:37256) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nEuRO-0002kR-8w for qemu-devel@nongnu.org; Tue, 01 Feb 2022 09:47:37 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:57966) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nEuRK-00034G-PF for qemu-devel@nongnu.org; Tue, 01 Feb 2022 09:47:29 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1643726650; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EBP42+llKkf/zlfM9rVqtVCLG3K2hw9I/0giDQuALt4=; b=GY4EY4abaaEyyiP9cYzpFitN5JmJB0dSd3CGZdKDzAloBlBwzI+hj0okoX20hbHJvltnbH ePxR0syxGSTS5xk3HvzhFwQpHXmjbTvXn1jX714fnf5E0Vb4UNMK4tglOsaVaY2zMjxrLa aaAM4Ig9+z+JyoMQcM/1t3FvupcZDLI= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-590-Skvv6MmiPh-T6ygNtnCpfg-1; Tue, 01 Feb 2022 09:44:09 -0500 X-MC-Unique: Skvv6MmiPh-T6ygNtnCpfg-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DA4D21091DA0; Tue, 1 Feb 2022 14:44:07 +0000 (UTC) Received: from localhost (unknown [10.39.193.129]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7C3CE70D2B; Tue, 1 Feb 2022 14:44:07 +0000 (UTC) From: Hanna Reitz To: qemu-block@nongnu.org Subject: [PULL 23/24] iotests/migration-permissions: New test Date: Tue, 1 Feb 2022 15:42:32 +0100 Message-Id: <20220201144233.617021-24-hreitz@redhat.com> In-Reply-To: <20220201144233.617021-1-hreitz@redhat.com> References: <20220201144233.617021-1-hreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=hreitz@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=170.10.133.124; envelope-from=hreitz@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.081, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Peter Maydell , Hanna Reitz , Richard Henderson , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This test checks that a raw image in use by a virtio-blk device does not share the WRITE permission both before and after migration. Signed-off-by: Hanna Reitz --- .../qemu-iotests/tests/migration-permissions | 101 ++++++++++++++++++ .../tests/migration-permissions.out | 5 + 2 files changed, 106 insertions(+) create mode 100755 tests/qemu-iotests/tests/migration-permissions create mode 100644 tests/qemu-iotests/tests/migration-permissions.out diff --git a/tests/qemu-iotests/tests/migration-permissions b/tests/qemu-iotests/tests/migration-permissions new file mode 100755 index 0000000000..6be02581c7 --- /dev/null +++ b/tests/qemu-iotests/tests/migration-permissions @@ -0,0 +1,101 @@ +#!/usr/bin/env python3 +# group: migration +# +# Copyright (C) 2021 Red Hat, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . +# + +import os +import iotests +from iotests import imgfmt, qemu_img_create, qemu_io + + +test_img = os.path.join(iotests.test_dir, 'test.img') +mig_sock = os.path.join(iotests.sock_dir, 'mig.sock') + + +class TestMigrationPermissions(iotests.QMPTestCase): + def setUp(self): + qemu_img_create('-f', imgfmt, test_img, '1M') + + # Set up two VMs (source and destination) accessing the same raw + # image file with a virtio-blk device; prepare the destination for + # migration with .add_incoming() and enable migration events + vms = [None, None] + for i in range(2): + vms[i] = iotests.VM(path_suffix=f'{i}') + vms[i].add_blockdev(f'file,node-name=prot,filename={test_img}') + vms[i].add_blockdev(f'{imgfmt},node-name=fmt,file=prot') + vms[i].add_device('virtio-blk,drive=fmt') + + if i == 1: + vms[i].add_incoming(f'unix:{mig_sock}') + + vms[i].launch() + + result = vms[i].qmp('migrate-set-capabilities', + capabilities=[ + {'capability': 'events', 'state': True} + ]) + self.assert_qmp(result, 'return', {}) + + self.vm_s = vms[0] + self.vm_d = vms[1] + + def tearDown(self): + self.vm_s.shutdown() + self.vm_d.shutdown() + try: + os.remove(mig_sock) + except FileNotFoundError: + pass + os.remove(test_img) + + # Migrate an image in use by a virtio-blk device to another VM and + # verify that the WRITE permission is unshared both before and after + # migration + def test_post_migration_permissions(self): + # Try to access the image R/W, which should fail because virtio-blk + # has not been configured with share-rw=on + log = qemu_io('-f', imgfmt, '-c', 'quit', test_img) + if not log.strip(): + print('ERROR (pre-migration): qemu-io should not be able to ' + 'access this image, but it reported no error') + else: + # This is the expected output + assert 'Is another process using the image' in log + + # Now migrate the VM + self.vm_s.qmp('migrate', uri=f'unix:{mig_sock}') + assert self.vm_s.wait_migration(None) + assert self.vm_d.wait_migration(None) + + # Try the same qemu-io access again, verifying that the WRITE + # permission remains unshared + log = qemu_io('-f', imgfmt, '-c', 'quit', test_img) + if not log.strip(): + print('ERROR (post-migration): qemu-io should not be able to ' + 'access this image, but it reported no error') + else: + # This is the expected output + assert 'Is another process using the image' in log + + +if __name__ == '__main__': + # Only works with raw images because we are testing the + # BlockBackend permissions; image format drivers may additionally + # unshare permissions and thus tamper with the result + iotests.main(supported_fmts=['raw'], + supported_protocols=['file']) diff --git a/tests/qemu-iotests/tests/migration-permissions.out b/tests/qemu-iotests/tests/migration-permissions.out new file mode 100644 index 0000000000..ae1213e6f8 --- /dev/null +++ b/tests/qemu-iotests/tests/migration-permissions.out @@ -0,0 +1,5 @@ +. +---------------------------------------------------------------------- +Ran 1 tests + +OK