From patchwork Fri Jul 17 23:09:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Deven Bowers X-Patchwork-Id: 11671405 X-Patchwork-Delegate: snitzer@redhat.com 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 9DB9414E3 for ; Fri, 17 Jul 2020 23:20:59 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [207.211.31.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4DE822064C for ; Fri, 17 Jul 2020 23:20:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4DE822064C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=dm-devel-bounces@redhat.com 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-505-v3lmV6NzP56SjzgLpASR6Q-1; Fri, 17 Jul 2020 19:20:54 -0400 X-MC-Unique: v3lmV6NzP56SjzgLpASR6Q-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 7C43518C63C0; Fri, 17 Jul 2020 23:20:50 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2FD625C240; Fri, 17 Jul 2020 23:20:50 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id D87D196255; Fri, 17 Jul 2020 23:20:49 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id 06HNGmJW002220 for ; Fri, 17 Jul 2020 19:16:48 -0400 Received: by smtp.corp.redhat.com (Postfix) id A5C5C115171; Fri, 17 Jul 2020 23:16:48 +0000 (UTC) Delivered-To: dm-devel@redhat.com Received: from mimecast-mx02.redhat.com (mimecast04.extmail.prod.ext.rdu2.redhat.com [10.11.55.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A0848114D18 for ; Fri, 17 Jul 2020 23:16:45 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-1.mimecast.com [205.139.110.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9C6711012440 for ; Fri, 17 Jul 2020 23:16:45 +0000 (UTC) Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by relay.mimecast.com with ESMTP id us-mta-352-iD_UX1LbO0i1jtY8edAoBw-1; Fri, 17 Jul 2020 19:16:43 -0400 X-MC-Unique: iD_UX1LbO0i1jtY8edAoBw-1 Received: from dede-linux-virt.corp.microsoft.com (unknown [131.107.160.54]) by linux.microsoft.com (Postfix) with ESMTPSA id 2885C20B4913; Fri, 17 Jul 2020 16:09:48 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 2885C20B4913 From: Deven Bowers To: agk@redhat.com, axboe@kernel.dk, snitzer@redhat.com, jmorris@namei.org, serge@hallyn.com, zohar@linux.ibm.com, viro@zeniv.linux.org.uk, paul@paul-moore.com, eparis@redhat.com, jannh@google.com, dm-devel@redhat.com, linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org, linux-audit@redhat.com Date: Fri, 17 Jul 2020 16:09:36 -0700 Message-Id: <20200717230941.1190744-8-deven.desai@linux.microsoft.com> In-Reply-To: <20200717230941.1190744-1-deven.desai@linux.microsoft.com> References: <20200717230941.1190744-1-deven.desai@linux.microsoft.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-MIME-Autoconverted: from quoted-printable to 8bit by lists01.pubmisc.prod.ext.phx2.redhat.com id 06HNGmJW002220 X-loop: dm-devel@redhat.com Cc: sashal@kernel.org, mdsakib@microsoft.com, corbet@lwn.net, linux-kernel@vger.kernel.org, pasha.tatshin@soleen.com, nramas@linux.microsoft.com, tyhicks@linux.microsoft.com, jaskarankhurana@linux.microsoft.com Subject: [dm-devel] [RFC PATCH v4 07/12] dm-verity: add bdev_setsecurity hook for dm-verity signature X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Add a security hook call to set a security property of a block_device in dm-verity with the results of a verified, signed root-hash. Signed-off-by: Deven Bowers --- drivers/md/dm-verity-verify-sig.c | 7 +++++++ include/linux/device-mapper.h | 2 ++ 2 files changed, 9 insertions(+) diff --git a/drivers/md/dm-verity-verify-sig.c b/drivers/md/dm-verity-verify-sig.c index 27dac8aa2e5a..242e2421d3c8 100644 --- a/drivers/md/dm-verity-verify-sig.c +++ b/drivers/md/dm-verity-verify-sig.c @@ -8,7 +8,10 @@ #include #include #include +#include +#include #include +#include "dm-core.h" #include "dm-verity.h" #include "dm-verity-verify-sig.h" @@ -182,6 +185,10 @@ int verity_verify_root_hash(const struct dm_verity *v) goto cleanup; sig_target->passed = true; + + ret = security_bdev_setsecurity(dm_table_get_md(v->ti->table)->bdev, + DM_VERITY_SIGNATURE_SEC_NAME, + v->sig->sig, v->sig->sig_size); cleanup: kfree(root_hash); return ret; diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h index 8750f2dc5613..02be0be21d38 100644 --- a/include/linux/device-mapper.h +++ b/include/linux/device-mapper.h @@ -624,4 +624,6 @@ static inline unsigned long to_bytes(sector_t n) return (n << SECTOR_SHIFT); } +#define DM_VERITY_SIGNATURE_SEC_NAME DM_NAME ".verity-sig" + #endif /* _LINUX_DEVICE_MAPPER_H */