From nobody Thu Dec 18 17:53:50 2025 Delivered-To: importer@patchew.org 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; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1583935140; cv=none; d=zohomail.com; s=zohoarc; b=OfYycWBm6sRGskFRpmEU7Wx5sb4j2EQpZz0VmtJ9WXiE9M27zxFOSiSTiFrIKfEyv35XQOJX6ojc8vLXDQMZvNu6LYXnKPkOdWS7J+0ww0hb+3QERY3qv4Acn2CAQ4KrdSy7FkQqttBAq5+8KuxebMahYAliZNCGeUQxKZ8xvFo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1583935140; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=CnZJ4bZfLKCfJ7MiH+BGb4mcoIz52XTg0VJCr+4eAvM=; b=SJUhVpbRvvPI1TVgiVAMrqSmSTMXgqkZ5wZKK6iGtrwX0Jt5zQPxJZd7kKjY5VraSFBZk9c4GJjczrf3CIhYBA7ZUNc5mWgYPmFRqbCMPHTzLYuwAQZCwdZQYWglR2KtiM9NDqZoz8bLmDlZGJgEDbQukliKpOevZnrXT9/mAuY= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1583935140562566.7540098697694; Wed, 11 Mar 2020 06:59:00 -0700 (PDT) Received: from localhost ([::1]:52564 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jC1sv-0000z1-5F for importer@patchew.org; Wed, 11 Mar 2020 09:58:57 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36008) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jC1mi-0003ez-CT for qemu-devel@nongnu.org; Wed, 11 Mar 2020 09:52:33 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jC1md-0002Ei-8k for qemu-devel@nongnu.org; Wed, 11 Mar 2020 09:52:32 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:38265 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jC1md-0002Ds-3h for qemu-devel@nongnu.org; Wed, 11 Mar 2020 09:52:27 -0400 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-55-oOWCA6IlPc6poYywWlaWjQ-1; Wed, 11 Mar 2020 09:52:23 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0DD21800D5B; Wed, 11 Mar 2020 13:52:22 +0000 (UTC) Received: from localhost (ovpn-117-216.ams2.redhat.com [10.36.117.216]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A200460C99; Wed, 11 Mar 2020 13:52:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1583934745; 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=CnZJ4bZfLKCfJ7MiH+BGb4mcoIz52XTg0VJCr+4eAvM=; b=S/rSLpciTovRYqgODe4E9oGjTVcMQWP1k2yFDbcmXYEhoIP+KhJhTCHj6hPR35n6NfKOR0 DsoGqIVsXzSPS2CC8qt0BaVEo2LPhD2k1TLFdZmS1SghgiQtwmJNH6QP/hI8aoJlB/B7Qf gvynugi9tty2/giZRzvpZm8q7QGWWTg= X-MC-Unique: oOWCA6IlPc6poYywWlaWjQ-1 From: Max Reitz To: qemu-block@nongnu.org Subject: [PULL 02/19] luks: implement .bdrv_measure() Date: Wed, 11 Mar 2020 14:51:56 +0100 Message-Id: <20200311135213.1242028-3-mreitz@redhat.com> In-Reply-To: <20200311135213.1242028-1-mreitz@redhat.com> References: <20200311135213.1242028-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 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) Content-Type: text/plain; charset="utf-8" From: Stefan Hajnoczi Add qemu-img measure support in the "luks" block driver. Signed-off-by: Stefan Hajnoczi Reviewed-by: Max Reitz Message-Id: <20200221112522.1497712-3-stefanha@redhat.com> Signed-off-by: Max Reitz --- block/crypto.c | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) diff --git a/block/crypto.c b/block/crypto.c index 24823835c1..23e9c74d6f 100644 --- a/block/crypto.c +++ b/block/crypto.c @@ -484,6 +484,67 @@ static int64_t block_crypto_getlength(BlockDriverState= *bs) } =20 =20 +static BlockMeasureInfo *block_crypto_measure(QemuOpts *opts, + BlockDriverState *in_bs, + Error **errp) +{ + g_autoptr(QCryptoBlockCreateOptions) create_opts =3D NULL; + Error *local_err =3D NULL; + BlockMeasureInfo *info; + uint64_t size; + size_t luks_payload_size; + QDict *cryptoopts; + + /* + * Preallocation mode doesn't affect size requirements but we must con= sume + * the option. + */ + g_free(qemu_opt_get_del(opts, BLOCK_OPT_PREALLOC)); + + size =3D qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0); + + if (in_bs) { + int64_t ssize =3D bdrv_getlength(in_bs); + + if (ssize < 0) { + error_setg_errno(&local_err, -ssize, + "Unable to get image virtual_size"); + goto err; + } + + size =3D ssize; + } + + cryptoopts =3D qemu_opts_to_qdict_filtered(opts, NULL, + &block_crypto_create_opts_luks, true); + qdict_put_str(cryptoopts, "format", "luks"); + create_opts =3D block_crypto_create_opts_init(cryptoopts, &local_err); + qobject_unref(cryptoopts); + if (!create_opts) { + goto err; + } + + if (!qcrypto_block_calculate_payload_offset(create_opts, NULL, + &luks_payload_size, + &local_err)) { + goto err; + } + + /* + * Unallocated blocks are still encrypted so allocation status makes no + * difference to the file size. + */ + info =3D g_new(BlockMeasureInfo, 1); + info->fully_allocated =3D luks_payload_size + size; + info->required =3D luks_payload_size + size; + return info; + +err: + error_propagate(errp, local_err); + return NULL; +} + + static int block_crypto_probe_luks(const uint8_t *buf, int buf_size, const char *filename) { @@ -670,6 +731,7 @@ static BlockDriver bdrv_crypto_luks =3D { .bdrv_co_preadv =3D block_crypto_co_preadv, .bdrv_co_pwritev =3D block_crypto_co_pwritev, .bdrv_getlength =3D block_crypto_getlength, + .bdrv_measure =3D block_crypto_measure, .bdrv_get_info =3D block_crypto_get_info_luks, .bdrv_get_specific_info =3D block_crypto_get_specific_info_luks, =20 --=20 2.24.1