From patchwork Tue May 5 20:08:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Maxim Levitsky X-Patchwork-Id: 11529855 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 316F2139A for ; Tue, 5 May 2020 20:16:55 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 0791420735 for ; Tue, 5 May 2020 20:16:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Kah3EiwJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0791420735 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:45962 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jW3zq-0001Zv-5N for patchwork-qemu-devel@patchwork.kernel.org; Tue, 05 May 2020 16:16:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42230) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jW3sF-0004N5-AX for qemu-devel@nongnu.org; Tue, 05 May 2020 16:09:03 -0400 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:47887 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jW3sE-0000rg-Cf for qemu-devel@nongnu.org; Tue, 05 May 2020 16:09:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588709341; 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=o450tvAR6DN72VeXuYF/wxV0rQiNozrUPlJWj3RTe0M=; b=Kah3EiwJy7/nCGp1NxrDnSqpxFdTzScKRPRusHAmEBDKhWmzsYvVCieL5gBPgufanrXm1F +fs+ckORKQEpC/9BZC5tXagm14NxyLC/5sKMR1EwdglHwATb5Xl2/NVbndD6RHvTnhaKQp g18eyL4SzP0cE9OGjCtPmifnm+xLRoE= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-315-KsaZ90RQOd-PbTPBrlv3kw-1; Tue, 05 May 2020 16:08:59 -0400 X-MC-Unique: KsaZ90RQOd-PbTPBrlv3kw-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 E3AD88014D6; Tue, 5 May 2020 20:08:58 +0000 (UTC) Received: from maximlenovopc.usersys.redhat.com (unknown [10.35.206.34]) by smtp.corp.redhat.com (Postfix) with ESMTP id A15649CB9; Tue, 5 May 2020 20:08:56 +0000 (UTC) From: Maxim Levitsky To: qemu-devel@nongnu.org Subject: [PATCH v4 13/14] block/qcow2: implement blockdev-amend Date: Tue, 5 May 2020 23:08:18 +0300 Message-Id: <20200505200819.5662-14-mlevitsk@redhat.com> In-Reply-To: <20200505200819.5662-1-mlevitsk@redhat.com> References: <20200505200819.5662-1-mlevitsk@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=207.211.31.81; envelope-from=mlevitsk@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/05 15:23:58 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , qemu-block@nongnu.org, John Snow , Markus Armbruster , Max Reitz , Maxim Levitsky Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Currently the implementation only supports amending the encryption options, unlike the qemu-img version Signed-off-by: Maxim Levitsky Reviewed-by: Daniel P. Berrangé --- block/qcow2.c | 39 +++++++++++++++++++++++++++++++++++++++ qapi/block-core.json | 16 +++++++++++++++- 2 files changed, 54 insertions(+), 1 deletion(-) diff --git a/block/qcow2.c b/block/qcow2.c index ce1e25f341..a770b88a8f 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -5448,6 +5448,44 @@ static int qcow2_amend_options(BlockDriverState *bs, QemuOpts *opts, return 0; } +static int coroutine_fn qcow2_co_amend(BlockDriverState *bs, + BlockdevAmendOptions *opts, + bool force, + Error **errp) +{ + BlockdevAmendOptionsQcow2 *qopts = &opts->u.qcow2; + BDRVQcow2State *s = bs->opaque; + int ret = 0; + + if (qopts->has_encrypt) { + if (!s->crypto) { + error_setg(errp, "image is not encrypted, can't amend"); + return -EOPNOTSUPP; + } + + if (qopts->encrypt->format != Q_CRYPTO_BLOCK_FORMAT_LUKS) { + error_setg(errp, + "Amend can't be used to change the qcow2 encryption format"); + return -EOPNOTSUPP; + } + + if (s->crypt_method_header != QCOW_CRYPT_LUKS) { + error_setg(errp, + "Only LUKS encryption options can be amended for qcow2 with blockdev-amend"); + return -EOPNOTSUPP; + } + + ret = qcrypto_block_amend_options(s->crypto, + qcow2_crypto_hdr_read_func, + qcow2_crypto_hdr_write_func, + bs, + qopts->encrypt, + force, + errp); + } + return ret; +} + /* * If offset or size are negative, respectively, they will not be included in * the BLOCK_IMAGE_CORRUPTED event emitted. @@ -5658,6 +5696,7 @@ BlockDriver bdrv_qcow2 = { .mutable_opts = mutable_opts, .bdrv_co_check = qcow2_co_check, .bdrv_amend_options = qcow2_amend_options, + .bdrv_co_amend = qcow2_co_amend, .bdrv_detach_aio_context = qcow2_detach_aio_context, .bdrv_attach_aio_context = qcow2_attach_aio_context, diff --git a/qapi/block-core.json b/qapi/block-core.json index a5f679ac17..0ffdc1c3d4 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -4661,6 +4661,19 @@ 'data': { } } +## +# @BlockdevAmendOptionsQcow2: +# +# Driver specific image amend options for qcow2. +# For now, only encryption options can be amended +# +# @encrypt Encryption options to be amended +# +# Since: 5.0 +## +{ 'struct': 'BlockdevAmendOptionsQcow2', + 'data': { '*encrypt': 'QCryptoBlockAmendOptions' } } + ## # @BlockdevAmendOptions: # @@ -4675,7 +4688,8 @@ 'driver': 'BlockdevDriver' }, 'discriminator': 'driver', 'data': { - 'luks': 'BlockdevAmendOptionsLUKS' } } + 'luks': 'BlockdevAmendOptionsLUKS', + 'qcow2': 'BlockdevAmendOptionsQcow2' } } ## # @x-blockdev-amend: