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bh=gj98eBMjQ8Y9gSHoOf1w2VXvi0IRo7VNE0AcsD+Z034=; b=AI1MHhLKZzTua1kQ9hZzNLbOu/Lr+myyW4u0GEfeYXbrLs7c5E+Hsa+RSR6uf5mQEUi92g XSRZnUJUp7P58fUm8bxBrvJsRr+pvpHrtthzbUPmGX+jsIOUSAqg/i1aWr4fgOJM4P0DPf Vs+RPPRE9hYM2W/ws/ngbLyy2xUPhx0= X-MC-Unique: tqppaN38N-G0bPvKRFR5TQ-1 From: Max Reitz To: qemu-block@nongnu.org Subject: [PATCH 17/19] block/crypto: implement blockdev-amend Date: Thu, 25 Jun 2020 14:55:46 +0200 Message-Id: <20200625125548.870061-18-mreitz@redhat.com> In-Reply-To: <20200625125548.870061-1-mreitz@redhat.com> References: <20200625125548.870061-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 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=205.139.110.61; envelope-from=mreitz@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/25 00:45:15 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 , Maxim Levitsky , 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 Signed-off-by: Maxim Levitsky Reviewed-by: Daniel P. Berrang=C3=A9 Reviewed-by: Max Reitz Message-Id: <20200608094030.670121-13-mlevitsk@redhat.com> Signed-off-by: Max Reitz --- qapi/block-core.json | 14 ++++++++- block/crypto.c | 72 ++++++++++++++++++++++++++++++++------------ 2 files changed, 66 insertions(+), 20 deletions(-) diff --git a/qapi/block-core.json b/qapi/block-core.json index c22996282f..cd679ad435 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -4674,6 +4674,18 @@ 'data': { 'job-id': 'str', 'options': 'BlockdevCreateOptions' } } =20 +## +# @BlockdevAmendOptionsLUKS: +# +# Driver specific image amend options for LUKS. +# +# Since: 5.1 +## +{ 'struct': 'BlockdevAmendOptionsLUKS', + 'base': 'QCryptoBlockAmendOptionsLUKS', + 'data': { } +} + ## # @BlockdevAmendOptions: # @@ -4688,7 +4700,7 @@ 'driver': 'BlockdevDriver' }, 'discriminator': 'driver', 'data': { - } } + 'luks': 'BlockdevAmendOptionsLUKS' } } =20 ## # @x-blockdev-amend: diff --git a/block/crypto.c b/block/crypto.c index b9c40e6922..3fbd68832b 100644 --- a/block/crypto.c +++ b/block/crypto.c @@ -791,32 +791,21 @@ block_crypto_get_specific_info_luks(BlockDriverState = *bs, Error **errp) } =20 static int -block_crypto_amend_options_luks(BlockDriverState *bs, - QemuOpts *opts, - BlockDriverAmendStatusCB *status_cb, - void *cb_opaque, - bool force, - Error **errp) +block_crypto_amend_options_generic_luks(BlockDriverState *bs, + QCryptoBlockAmendOptions *amend_op= tions, + bool force, + Error **errp) { BlockCrypto *crypto =3D bs->opaque; - QDict *cryptoopts =3D NULL; - QCryptoBlockAmendOptions *amend_options =3D NULL; int ret; =20 assert(crypto); assert(crypto->block); - crypto->updating_keys =3D true; =20 + /* apply for exclusive read/write permissions to the underlying file*/ + crypto->updating_keys =3D true; ret =3D bdrv_child_refresh_perms(bs, bs->file, errp); - if (ret < 0) { - goto cleanup; - } - - cryptoopts =3D qemu_opts_to_qdict(opts, NULL); - qdict_put_str(cryptoopts, "format", "luks"); - amend_options =3D block_crypto_amend_opts_init(cryptoopts, errp); - if (!amend_options) { - ret =3D -EINVAL; + if (ret) { goto cleanup; } =20 @@ -828,13 +817,57 @@ block_crypto_amend_options_luks(BlockDriverState *bs, force, errp); cleanup: + /* release exclusive read/write permissions to the underlying file*/ crypto->updating_keys =3D false; bdrv_child_refresh_perms(bs, bs->file, errp); - qapi_free_QCryptoBlockAmendOptions(amend_options); + return ret; +} + +static int +block_crypto_amend_options_luks(BlockDriverState *bs, + QemuOpts *opts, + BlockDriverAmendStatusCB *status_cb, + void *cb_opaque, + bool force, + Error **errp) +{ + BlockCrypto *crypto =3D bs->opaque; + QDict *cryptoopts =3D NULL; + QCryptoBlockAmendOptions *amend_options =3D NULL; + int ret =3D -EINVAL; + + assert(crypto); + assert(crypto->block); + + cryptoopts =3D qemu_opts_to_qdict(opts, NULL); + qdict_put_str(cryptoopts, "format", "luks"); + amend_options =3D block_crypto_amend_opts_init(cryptoopts, errp); qobject_unref(cryptoopts); + if (!amend_options) { + goto cleanup; + } + ret =3D block_crypto_amend_options_generic_luks(bs, amend_options, + force, errp); +cleanup: + qapi_free_QCryptoBlockAmendOptions(amend_options); return ret; } =20 +static int +coroutine_fn block_crypto_co_amend_luks(BlockDriverState *bs, + BlockdevAmendOptions *opts, + bool force, + Error **errp) +{ + QCryptoBlockAmendOptions amend_opts; + + amend_opts =3D (QCryptoBlockAmendOptions) { + .format =3D Q_CRYPTO_BLOCK_FORMAT_LUKS, + .u.luks =3D *qapi_BlockdevAmendOptionsLUKS_base(&opts->u.luks), + }; + return block_crypto_amend_options_generic_luks(bs, &amend_opts, + force, errp); +} =20 static void block_crypto_child_perms(BlockDriverState *bs, BdrvChild *c, @@ -910,6 +943,7 @@ static BlockDriver bdrv_crypto_luks =3D { .bdrv_get_info =3D block_crypto_get_info_luks, .bdrv_get_specific_info =3D block_crypto_get_specific_info_luks, .bdrv_amend_options =3D block_crypto_amend_options_luks, + .bdrv_co_amend =3D block_crypto_co_amend_luks, =20 .is_format =3D true, =20 --=20 2.26.2