From patchwork Thu Jan 30 17:29:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Maxim Levitsky X-Patchwork-Id: 11358457 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 28575112B for ; Thu, 30 Jan 2020 17:30:34 +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 F311720674 for ; Thu, 30 Jan 2020 17:30:33 +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="Sws+PYIf" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F311720674 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]:36780 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ixDeD-0000UD-3D for patchwork-qemu-devel@patchwork.kernel.org; Thu, 30 Jan 2020 12:30:33 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:46816) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ixDdH-0007Ai-HL for qemu-devel@nongnu.org; Thu, 30 Jan 2020 12:29:36 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ixDdG-0006bs-6v for qemu-devel@nongnu.org; Thu, 30 Jan 2020 12:29:35 -0500 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:55547 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ixDdG-0006ZM-2o for qemu-devel@nongnu.org; Thu, 30 Jan 2020 12:29:34 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1580405373; 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=p4mD2j69lZMc/286pLcPBYvxejRLX142BSHlfkTXC/0=; b=Sws+PYIf0s/0KDurM8wYnCOGJ6cwHfq6KyF1hK0XBgTAypJMy9f5rAk33MBH1F4NVAmz2U n+rWpXFsJUjRugITIHptcYMp8VeCNwjaDAQpTQER2Rvr2AxN81QHspBQyQsoVZbp7c2J0x K2i0bMw75yCyxfE7f86g/KxK02p16M4= 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-152-T1nu9StjMUGNfNMpxSUK5g-1; Thu, 30 Jan 2020 12:29:31 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DAC18107ACC5; Thu, 30 Jan 2020 17:29:30 +0000 (UTC) Received: from maximlenovopc.usersys.redhat.com (unknown [10.35.206.78]) by smtp.corp.redhat.com (Postfix) with ESMTP id 719E55D9E5; Thu, 30 Jan 2020 17:29:26 +0000 (UTC) From: Maxim Levitsky To: qemu-devel@nongnu.org Subject: [PATCH v2 01/14] qcrypto/core: add generic infrastructure for crypto options amendment Date: Thu, 30 Jan 2020 19:29:06 +0200 Message-Id: <20200130172919.13424-2-mlevitsk@redhat.com> In-Reply-To: <20200130172919.13424-1-mlevitsk@redhat.com> References: <20200130172919.13424-1-mlevitsk@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: T1nu9StjMUGNfNMpxSUK5g-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.61 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" This will be used first to implement luks keyslot management. block_crypto_amend_opts_init will be used to convert qemu-img cmdline to QCryptoBlockAmendOptions Signed-off-by: Maxim Levitsky Reviewed-by: Daniel P. Berrangé --- block/crypto.c | 17 +++++++++++++++++ block/crypto.h | 3 +++ crypto/block.c | 31 +++++++++++++++++++++++++++++++ crypto/blockpriv.h | 8 ++++++++ include/crypto/block.h | 22 ++++++++++++++++++++++ qapi/crypto.json | 16 ++++++++++++++++ 6 files changed, 97 insertions(+) diff --git a/block/crypto.c b/block/crypto.c index 24823835c1..ecf96a7a9b 100644 --- a/block/crypto.c +++ b/block/crypto.c @@ -184,6 +184,23 @@ block_crypto_create_opts_init(QDict *opts, Error **errp) return ret; } +QCryptoBlockAmendOptions * +block_crypto_amend_opts_init(QDict *opts, Error **errp) +{ + Visitor *v; + QCryptoBlockAmendOptions *ret; + + v = qobject_input_visitor_new_flat_confused(opts, errp); + if (!v) { + return NULL; + } + + visit_type_QCryptoBlockAmendOptions(v, NULL, &ret, errp); + + visit_free(v); + return ret; +} + static int block_crypto_open_generic(QCryptoBlockFormat format, QemuOptsList *opts_spec, diff --git a/block/crypto.h b/block/crypto.h index b935695e79..06e044c9be 100644 --- a/block/crypto.h +++ b/block/crypto.h @@ -91,6 +91,9 @@ QCryptoBlockCreateOptions * block_crypto_create_opts_init(QDict *opts, Error **errp); +QCryptoBlockAmendOptions * +block_crypto_amend_opts_init(QDict *opts, Error **errp); + QCryptoBlockOpenOptions * block_crypto_open_opts_init(QDict *opts, Error **errp); diff --git a/crypto/block.c b/crypto/block.c index 325752871c..0ce67db641 100644 --- a/crypto/block.c +++ b/crypto/block.c @@ -115,6 +115,37 @@ QCryptoBlock *qcrypto_block_create(QCryptoBlockCreateOptions *options, } +int qcrypto_block_amend_options(QCryptoBlock *block, + QCryptoBlockReadFunc readfunc, + QCryptoBlockWriteFunc writefunc, + void *opaque, + QCryptoBlockAmendOptions *options, + bool force, + Error **errp) +{ + if (options->format != block->format) { + error_setg(errp, + "Cannot amend encryption format"); + return -1; + } + + if (!block->driver->amend) { + error_setg(errp, + "Crypto format %s doesn't support format options amendment", + QCryptoBlockFormat_str(block->format)); + return -1; + } + + return block->driver->amend(block, + readfunc, + writefunc, + opaque, + options, + force, + errp); +} + + QCryptoBlockInfo *qcrypto_block_get_info(QCryptoBlock *block, Error **errp) { diff --git a/crypto/blockpriv.h b/crypto/blockpriv.h index 71c59cb542..3c7ccea504 100644 --- a/crypto/blockpriv.h +++ b/crypto/blockpriv.h @@ -62,6 +62,14 @@ struct QCryptoBlockDriver { void *opaque, Error **errp); + int (*amend)(QCryptoBlock *block, + QCryptoBlockReadFunc readfunc, + QCryptoBlockWriteFunc writefunc, + void *opaque, + QCryptoBlockAmendOptions *options, + bool force, + Error **errp); + int (*get_info)(QCryptoBlock *block, QCryptoBlockInfo *info, Error **errp); diff --git a/include/crypto/block.h b/include/crypto/block.h index d49d2c2da9..e4553cf33d 100644 --- a/include/crypto/block.h +++ b/include/crypto/block.h @@ -144,6 +144,28 @@ QCryptoBlock *qcrypto_block_create(QCryptoBlockCreateOptions *options, void *opaque, Error **errp); +/** + * qcrypto_block_amend_options: + * @block: the block encryption object + * + * @readfunc: callback for reading data from the volume header + * @writefunc: callback for writing data to the volume header + * @opaque: data to pass to @readfunc and @writefunc + * @options: the new/amended encryption options + * @force: hint for the driver to allow unsafe operation + * @errp: error pointer + * + * Changes the crypto options of the encryption format + * + */ +int qcrypto_block_amend_options(QCryptoBlock *block, + QCryptoBlockReadFunc readfunc, + QCryptoBlockWriteFunc writefunc, + void *opaque, + QCryptoBlockAmendOptions *options, + bool force, + Error **errp); + /** * qcrypto_block_get_info: diff --git a/qapi/crypto.json b/qapi/crypto.json index b2a4cff683..3fd0ce177e 100644 --- a/qapi/crypto.json +++ b/qapi/crypto.json @@ -309,3 +309,19 @@ 'base': 'QCryptoBlockInfoBase', 'discriminator': 'format', 'data': { 'luks': 'QCryptoBlockInfoLUKS' } } + + + +## +# @QCryptoBlockAmendOptions: +# +# The options that are available for all encryption formats +# when amending encryption settings +# +# Since: 5.0 +## +{ 'union': 'QCryptoBlockAmendOptions', + 'base': 'QCryptoBlockOptionsBase', + 'discriminator': 'format', + 'data': { + } }