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Mon, 6 Apr 2020 18:17:03 +0000 (UTC) Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by relay.mimecast.com with ESMTP id us-mta-34-C0Sg8848NuaeDhdkAblqKQ-1; Mon, 06 Apr 2020 14:17:01 -0400 X-MC-Unique: C0Sg8848NuaeDhdkAblqKQ-1 Received: from dede-linux.corp.microsoft.com (unknown [131.107.147.242]) by linux.microsoft.com (Postfix) with ESMTPSA id 05B3920A0862; Mon, 6 Apr 2020 11:10:58 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 05B3920A0862 From: deven.desai@linux.microsoft.com To: agk@redhat.com, axboe@kernel.dk, snitzer@redhat.com, jmorris@namei.org, serge@hallyn.com, zohar@linux.ibm.com, linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, dm-devel@redhat.com, linux-block@vger.kernel.org Date: Mon, 6 Apr 2020 11:10:40 -0700 Message-Id: <20200406181045.1024164-7-deven.desai@linux.microsoft.com> In-Reply-To: <20200406181045.1024164-1-deven.desai@linux.microsoft.com> References: <20200406181045.1024164-1-deven.desai@linux.microsoft.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-MIME-Autoconverted: from quoted-printable to 8bit by lists01.pubmisc.prod.ext.phx2.redhat.com id 036IH69W003542 X-loop: dm-devel@redhat.com X-Mailman-Approved-At: Mon, 06 Apr 2020 14:59:16 -0400 Cc: sashal@kernel.org, pasha.tatashin@soleen.com, mdsakib@linux.microsoft.com, nramas@linux.microsoft.com, tyhicks@linux.microsoft.com, jaskarankhurana@linux.microsoft.com Subject: [dm-devel] [RESEND PATCH 06/11] 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 10.5.11.15 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com From: Deven Bowers 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 475668c69dbc..6bd49aa48186 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 */