From patchwork Thu May 7 12:54:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Maxim Levitsky X-Patchwork-Id: 283256 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7D6DAC38A24 for ; Thu, 7 May 2020 13:01:57 +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 37CA3208D6 for ; Thu, 7 May 2020 13:01:57 +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="ClEJx7f8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 37CA3208D6 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+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:46756 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jWgA0-0001ns-BR for qemu-devel@archiver.kernel.org; Thu, 07 May 2020 09:01:56 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50506) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jWg36-0007Bt-7w for qemu-devel@nongnu.org; Thu, 07 May 2020 08:54:48 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:58044 helo=us-smtp-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 1jWg33-0002wr-JU for qemu-devel@nongnu.org; Thu, 07 May 2020 08:54:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588856084; 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=b4z8iQF74PBC2Ff5DFKCJqTHnUzfXPzr1RCzRe/C/qs=; b=ClEJx7f84keuYXxhp+pFJkcqDAHKMkHks/lfNAtB3vPAE2hXgUuxRowxDtaURCQDVB2Kit N0eZnje3JK6iInxRKbyCwrqc/+2tT2uPCT9ItoIsuaekuA7+YmZVGKiS3uyzpI/mpY9oam 5JP2gqcrUUXzoX6cq0FqDGV9fci16zw= 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-19-ScOOrQvzMDqbitWCbqLHJg-1; Thu, 07 May 2020 08:54:42 -0400 X-MC-Unique: ScOOrQvzMDqbitWCbqLHJg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E185880058A; Thu, 7 May 2020 12:54:41 +0000 (UTC) Received: from maximlenovopc.usersys.redhat.com (unknown [10.35.206.231]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9FB36707B3; Thu, 7 May 2020 12:54:39 +0000 (UTC) From: Maxim Levitsky To: qemu-devel@nongnu.org Subject: [PATCH v5 08/14] block/qcow2: extend qemu-img amend interface with crypto options Date: Thu, 7 May 2020 15:54:08 +0300 Message-Id: <20200507125414.2151-9-mlevitsk@redhat.com> In-Reply-To: <20200507125414.2151-1-mlevitsk@redhat.com> References: <20200507125414.2151-1-mlevitsk@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 Received-SPF: pass client-ip=207.211.31.120; envelope-from=mlevitsk@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/07 03:56:18 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Now that we have all the infrastructure in place, wire it in the qcow2 driver and expose this to the user. Signed-off-by: Maxim Levitsky Reviewed-by: Daniel P. Berrangé --- block/qcow2.c | 72 +++++++++++++++++++++++++++++++++----- tests/qemu-iotests/082.out | 45 ++++++++++++++++++++++++ 2 files changed, 108 insertions(+), 9 deletions(-) diff --git a/block/qcow2.c b/block/qcow2.c index aa0cadb86f..25fa7ac0b0 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -176,6 +176,19 @@ static ssize_t qcow2_crypto_hdr_write_func(QCryptoBlock *block, size_t offset, return ret; } +static QDict* +qcow2_extract_crypto_opts(QemuOpts *opts, const char *fmt, Error **errp) +{ + QDict *cryptoopts_qdict; + QDict *opts_qdict; + + /* Extract "encrypt." options into a qdict */ + opts_qdict = qemu_opts_to_qdict(opts, NULL); + qdict_extract_subqdict(opts_qdict, &cryptoopts_qdict, "encrypt."); + qobject_unref(opts_qdict); + qdict_put_str(cryptoopts_qdict, "format", fmt); + return cryptoopts_qdict; +} /* * read qcow2 extension and fill bs @@ -4736,17 +4749,11 @@ static BlockMeasureInfo *qcow2_measure(QemuOpts *opts, BlockDriverState *in_bs, g_free(optstr); if (has_luks) { + g_autoptr(QCryptoBlockCreateOptions) create_opts = NULL; - QDict *opts_qdict; - QDict *cryptoopts; + QDict *cryptoopts = qcow2_extract_crypto_opts(opts, "luks", errp); size_t headerlen; - opts_qdict = qemu_opts_to_qdict(opts, NULL); - qdict_extract_subqdict(opts_qdict, &cryptoopts, "encrypt."); - qobject_unref(opts_qdict); - - qdict_put_str(cryptoopts, "format", "luks"); - create_opts = block_crypto_create_opts_init(cryptoopts, errp); qobject_unref(cryptoopts); if (!create_opts) { @@ -5141,6 +5148,7 @@ typedef enum Qcow2AmendOperation { QCOW2_NO_OPERATION = 0, QCOW2_UPGRADING, + QCOW2_UPDATING_ENCRYPTION, QCOW2_CHANGING_REFCOUNT_ORDER, QCOW2_DOWNGRADING, } Qcow2AmendOperation; @@ -5222,6 +5230,7 @@ static int qcow2_amend_options(BlockDriverState *bs, QemuOpts *opts, int ret; QemuOptDesc *desc = opts->list->desc; Qcow2AmendHelperCBInfo helper_cb_info; + bool encryption_update = false; while (desc && desc->name) { if (!qemu_opt_find(opts, desc->name)) { @@ -5248,6 +5257,18 @@ static int qcow2_amend_options(BlockDriverState *bs, QemuOpts *opts, backing_file = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); } else if (!strcmp(desc->name, BLOCK_OPT_BACKING_FMT)) { backing_format = qemu_opt_get(opts, BLOCK_OPT_BACKING_FMT); + } else if (g_str_has_prefix(desc->name, "encrypt.")) { + if (!s->crypto) { + error_setg(errp, + "Can't amend encryption options - encryption not present"); + return -EINVAL; + } + if (s->crypt_method_header != QCOW_CRYPT_LUKS) { + error_setg(errp, + "Only LUKS encryption options can be amended"); + return -ENOTSUP; + } + encryption_update = true; } else if (!strcmp(desc->name, BLOCK_OPT_LAZY_REFCOUNTS)) { lazy_refcounts = qemu_opt_get_bool(opts, BLOCK_OPT_LAZY_REFCOUNTS, lazy_refcounts); @@ -5290,7 +5311,8 @@ static int qcow2_amend_options(BlockDriverState *bs, QemuOpts *opts, .original_status_cb = status_cb, .original_cb_opaque = cb_opaque, .total_operations = (new_version != old_version) - + (s->refcount_bits != refcount_bits) + + (s->refcount_bits != refcount_bits) + + (encryption_update == true) }; /* Upgrade first (some features may require compat=1.1) */ @@ -5303,6 +5325,33 @@ static int qcow2_amend_options(BlockDriverState *bs, QemuOpts *opts, } } + if (encryption_update) { + QDict *amend_opts_dict; + QCryptoBlockAmendOptions *amend_opts; + + helper_cb_info.current_operation = QCOW2_UPDATING_ENCRYPTION; + amend_opts_dict = qcow2_extract_crypto_opts(opts, "luks", errp); + if (!amend_opts_dict) { + return -EINVAL; + } + amend_opts = block_crypto_amend_opts_init(amend_opts_dict, errp); + qobject_unref(amend_opts_dict); + if (!amend_opts) { + return -EINVAL; + } + ret = qcrypto_block_amend_options(s->crypto, + qcow2_crypto_hdr_read_func, + qcow2_crypto_hdr_write_func, + bs, + amend_opts, + force, + errp); + qapi_free_QCryptoBlockAmendOptions(amend_opts); + if (ret < 0) { + return ret; + } + } + if (s->refcount_bits != refcount_bits) { int refcount_order = ctz32(refcount_bits); @@ -5555,6 +5604,11 @@ static QemuOptsList qcow2_amend_opts = { .name = "qcow2-amend-opts", .head = QTAILQ_HEAD_INITIALIZER(qcow2_amend_opts.head), .desc = { + BLOCK_CRYPTO_OPT_DEF_LUKS_STATE("encrypt."), + BLOCK_CRYPTO_OPT_DEF_LUKS_KEYSLOT("encrypt."), + BLOCK_CRYPTO_OPT_DEF_LUKS_OLD_SECRET("encrypt."), + BLOCK_CRYPTO_OPT_DEF_LUKS_NEW_SECRET("encrypt."), + BLOCK_CRYPTO_OPT_DEF_LUKS_ITER_TIME("encrypt."), QCOW_COMMON_OPTIONS, { /* end of list */ } } diff --git a/tests/qemu-iotests/082.out b/tests/qemu-iotests/082.out index c68458da8c..6558f38ba8 100644 --- a/tests/qemu-iotests/082.out +++ b/tests/qemu-iotests/082.out @@ -620,6 +620,11 @@ Amend options for 'qcow2': compat= - Compatibility level (v2 [0.10] or v3 [1.1]) data_file= - File name of an external data file data_file_raw= - The external data file must stay valid as a raw image + encrypt.iter-time= - Time to spend in PBKDF in milliseconds + encrypt.keyslot= - Select a single keyslot to modify explicitly + encrypt.new-secret= - New secret to set in the matching keyslots. Empty string to erase + encrypt.old-secret= - Select all keyslots that match this password + encrypt.state= - Select new state of affected keyslots (active/inactive) lazy_refcounts= - Postpone refcount updates refcount_bits= - Width of a reference count entry in bits size= - Virtual disk size @@ -631,6 +636,11 @@ Amend options for 'qcow2': compat= - Compatibility level (v2 [0.10] or v3 [1.1]) data_file= - File name of an external data file data_file_raw= - The external data file must stay valid as a raw image + encrypt.iter-time= - Time to spend in PBKDF in milliseconds + encrypt.keyslot= - Select a single keyslot to modify explicitly + encrypt.new-secret= - New secret to set in the matching keyslots. Empty string to erase + encrypt.old-secret= - Select all keyslots that match this password + encrypt.state= - Select new state of affected keyslots (active/inactive) lazy_refcounts= - Postpone refcount updates refcount_bits= - Width of a reference count entry in bits size= - Virtual disk size @@ -642,6 +652,11 @@ Amend options for 'qcow2': compat= - Compatibility level (v2 [0.10] or v3 [1.1]) data_file= - File name of an external data file data_file_raw= - The external data file must stay valid as a raw image + encrypt.iter-time= - Time to spend in PBKDF in milliseconds + encrypt.keyslot= - Select a single keyslot to modify explicitly + encrypt.new-secret= - New secret to set in the matching keyslots. Empty string to erase + encrypt.old-secret= - Select all keyslots that match this password + encrypt.state= - Select new state of affected keyslots (active/inactive) lazy_refcounts= - Postpone refcount updates refcount_bits= - Width of a reference count entry in bits size= - Virtual disk size @@ -653,6 +668,11 @@ Amend options for 'qcow2': compat= - Compatibility level (v2 [0.10] or v3 [1.1]) data_file= - File name of an external data file data_file_raw= - The external data file must stay valid as a raw image + encrypt.iter-time= - Time to spend in PBKDF in milliseconds + encrypt.keyslot= - Select a single keyslot to modify explicitly + encrypt.new-secret= - New secret to set in the matching keyslots. Empty string to erase + encrypt.old-secret= - Select all keyslots that match this password + encrypt.state= - Select new state of affected keyslots (active/inactive) lazy_refcounts= - Postpone refcount updates refcount_bits= - Width of a reference count entry in bits size= - Virtual disk size @@ -664,6 +684,11 @@ Amend options for 'qcow2': compat= - Compatibility level (v2 [0.10] or v3 [1.1]) data_file= - File name of an external data file data_file_raw= - The external data file must stay valid as a raw image + encrypt.iter-time= - Time to spend in PBKDF in milliseconds + encrypt.keyslot= - Select a single keyslot to modify explicitly + encrypt.new-secret= - New secret to set in the matching keyslots. Empty string to erase + encrypt.old-secret= - Select all keyslots that match this password + encrypt.state= - Select new state of affected keyslots (active/inactive) lazy_refcounts= - Postpone refcount updates refcount_bits= - Width of a reference count entry in bits size= - Virtual disk size @@ -675,6 +700,11 @@ Amend options for 'qcow2': compat= - Compatibility level (v2 [0.10] or v3 [1.1]) data_file= - File name of an external data file data_file_raw= - The external data file must stay valid as a raw image + encrypt.iter-time= - Time to spend in PBKDF in milliseconds + encrypt.keyslot= - Select a single keyslot to modify explicitly + encrypt.new-secret= - New secret to set in the matching keyslots. Empty string to erase + encrypt.old-secret= - Select all keyslots that match this password + encrypt.state= - Select new state of affected keyslots (active/inactive) lazy_refcounts= - Postpone refcount updates refcount_bits= - Width of a reference count entry in bits size= - Virtual disk size @@ -686,6 +716,11 @@ Amend options for 'qcow2': compat= - Compatibility level (v2 [0.10] or v3 [1.1]) data_file= - File name of an external data file data_file_raw= - The external data file must stay valid as a raw image + encrypt.iter-time= - Time to spend in PBKDF in milliseconds + encrypt.keyslot= - Select a single keyslot to modify explicitly + encrypt.new-secret= - New secret to set in the matching keyslots. Empty string to erase + encrypt.old-secret= - Select all keyslots that match this password + encrypt.state= - Select new state of affected keyslots (active/inactive) lazy_refcounts= - Postpone refcount updates refcount_bits= - Width of a reference count entry in bits size= - Virtual disk size @@ -697,6 +732,11 @@ Amend options for 'qcow2': compat= - Compatibility level (v2 [0.10] or v3 [1.1]) data_file= - File name of an external data file data_file_raw= - The external data file must stay valid as a raw image + encrypt.iter-time= - Time to spend in PBKDF in milliseconds + encrypt.keyslot= - Select a single keyslot to modify explicitly + encrypt.new-secret= - New secret to set in the matching keyslots. Empty string to erase + encrypt.old-secret= - Select all keyslots that match this password + encrypt.state= - Select new state of affected keyslots (active/inactive) lazy_refcounts= - Postpone refcount updates refcount_bits= - Width of a reference count entry in bits size= - Virtual disk size @@ -725,6 +765,11 @@ Amend options for 'qcow2': compat= - Compatibility level (v2 [0.10] or v3 [1.1]) data_file= - File name of an external data file data_file_raw= - The external data file must stay valid as a raw image + encrypt.iter-time= - Time to spend in PBKDF in milliseconds + encrypt.keyslot= - Select a single keyslot to modify explicitly + encrypt.new-secret= - New secret to set in the matching keyslots. Empty string to erase + encrypt.old-secret= - Select all keyslots that match this password + encrypt.state= - Select new state of affected keyslots (active/inactive) lazy_refcounts= - Postpone refcount updates refcount_bits= - Width of a reference count entry in bits size= - Virtual disk size