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bh=jFPDXmgbYSuMNSPmz3MGqWSs7F5g1xKW8/+M7CudBSk=; b=XgWXY6APdFCFtIkMDHBorQm7h9vDUSNVSuh3Yr3tEZ5YXscthVnpb8AifT5aQ4XfDThJEj KG9T+f7Mjoq1Osr99retxYir/Kk6F9Td6BL7NBYEfzS9v1I7nUoBt4nHmyTJ+i9Edvj0jc ++U89TY0A/6TBhyWENsBWyzEh8xBSI4= X-MC-Unique: Cn6UjYs7NT-Bf8obpZHsQg-1 From: Max Reitz To: qemu-block@nongnu.org Subject: [PULL 15/18] block/qcow2: implement blockdev-amend Date: Mon, 22 Jun 2020 17:10:56 +0200 Message-Id: <20200622151059.921191-16-mreitz@redhat.com> In-Reply-To: <20200622151059.921191-1-mreitz@redhat.com> References: <20200622151059.921191-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=207.211.31.120; envelope-from=mreitz@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/22 02:57:26 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, 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_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=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 , Peter Maydell , qemu-devel@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) From: Maxim Levitsky Currently the implementation only supports amending the encryption options, unlike the qemu-img version Signed-off-by: Maxim Levitsky Reviewed-by: Daniel P. Berrang=C3=A9 Reviewed-by: Max Reitz Message-Id: <20200608094030.670121-14-mlevitsk@redhat.com> Signed-off-by: Max Reitz --- qapi/block-core.json | 16 +++++++++++++++- block/qcow2.c | 39 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 54 insertions(+), 1 deletion(-) diff --git a/qapi/block-core.json b/qapi/block-core.json index cd679ad435..b20332e592 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -4686,6 +4686,19 @@ 'data': { } } =20 +## +# @BlockdevAmendOptionsQcow2: +# +# Driver specific image amend options for qcow2. +# For now, only encryption options can be amended +# +# @encrypt Encryption options to be amended +# +# Since: 5.1 +## +{ 'struct': 'BlockdevAmendOptionsQcow2', + 'data': { '*encrypt': 'QCryptoBlockAmendOptions' } } + ## # @BlockdevAmendOptions: # @@ -4700,7 +4713,8 @@ 'driver': 'BlockdevDriver' }, 'discriminator': 'driver', 'data': { - 'luks': 'BlockdevAmendOptionsLUKS' } } + 'luks': 'BlockdevAmendOptionsLUKS', + 'qcow2': 'BlockdevAmendOptionsQcow2' } } =20 ## # @x-blockdev-amend: diff --git a/block/qcow2.c b/block/qcow2.c index 0e72e8fc39..0d2d05d1f7 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -5585,6 +5585,44 @@ static int qcow2_amend_options(BlockDriverState *bs,= QemuOpts *opts, return 0; } =20 +static int coroutine_fn qcow2_co_amend(BlockDriverState *bs, + BlockdevAmendOptions *opts, + bool force, + Error **errp) +{ + BlockdevAmendOptionsQcow2 *qopts =3D &opts->u.qcow2; + BDRVQcow2State *s =3D bs->opaque; + int ret =3D 0; + + if (qopts->has_encrypt) { + if (!s->crypto) { + error_setg(errp, "image is not encrypted, can't amend"); + return -EOPNOTSUPP; + } + + if (qopts->encrypt->format !=3D 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 !=3D QCOW_CRYPT_LUKS) { + error_setg(errp, + "Only LUKS encryption options can be amended for qc= ow2 with blockdev-amend"); + return -EOPNOTSUPP; + } + + ret =3D 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. @@ -5802,6 +5840,7 @@ BlockDriver bdrv_qcow2 =3D { .mutable_opts =3D mutable_opts, .bdrv_co_check =3D qcow2_co_check, .bdrv_amend_options =3D qcow2_amend_options, + .bdrv_co_amend =3D qcow2_co_amend, =20 .bdrv_detach_aio_context =3D qcow2_detach_aio_context, .bdrv_attach_aio_context =3D qcow2_attach_aio_context, --=20 2.26.2