From patchwork Tue Feb 8 01:41:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mimi Zohar X-Patchwork-Id: 12738046 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 614DCC3526C for ; Tue, 8 Feb 2022 01:48:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343596AbiBHBsM (ORCPT ); Mon, 7 Feb 2022 20:48:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34734 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344906AbiBHBm1 (ORCPT ); Mon, 7 Feb 2022 20:42:27 -0500 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0FB2AC043181; Mon, 7 Feb 2022 17:42:25 -0800 (PST) Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 217LMWV6013010; Tue, 8 Feb 2022 01:42:24 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=krtvOcvXF32XPtlhSDQUP5MaKSEcLiroOIXzFu4OWs8=; b=YioOwb/jEzudIQpP2lrI2CfU4RzsM2ki5ykifE+j7mq3bR9EBS3qsU7166TJrl7fjqD1 bIBJ0Y1els8DMbGhgTh+IECf8UsAN/lvr4EMT1kBLeRX/uEdCdTP60Zqzn2AQh6XBlEF T0X4v9Zd58NriFwCovSrEmZd5Wm8PXwucNQvKwuG0YdHT/+aBl+TrshEmSwiW2atCjS/ CRfuxkF3UWpt90YtdEPvQYTAwybosgSbhpvXN898fQCsLFkTtZWUTkysOu0bhKmTqx0F UYNl/PgxcNmfauEbH046bx5VtMAvNGOE9OLJTc4qDYx7pnYxYhGg1XNKND4euvzIxRkr PQ== Received: from ppma06ams.nl.ibm.com (66.31.33a9.ip4.static.sl-reverse.com [169.51.49.102]) by mx0a-001b2d01.pphosted.com with ESMTP id 3e22u3ap7b-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 08 Feb 2022 01:42:23 +0000 Received: from pps.filterd (ppma06ams.nl.ibm.com [127.0.0.1]) by ppma06ams.nl.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 2181gH8I023563; Tue, 8 Feb 2022 01:42:21 GMT Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by ppma06ams.nl.ibm.com with ESMTP id 3e1ggjsksn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 08 Feb 2022 01:42:21 +0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 2181gIw642926424 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 8 Feb 2022 01:42:18 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1CA3AA4057; Tue, 8 Feb 2022 01:42:18 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4B179A4055; Tue, 8 Feb 2022 01:42:17 +0000 (GMT) Received: from li-f45666cc-3089-11b2-a85c-c57d1a57929f.ibm.com.com (unknown [9.65.90.153]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 8 Feb 2022 01:42:17 +0000 (GMT) From: Mimi Zohar To: linux-integrity@vger.kernel.org Cc: Mimi Zohar , Eric Biggers , Stefan Berger , linux-fscrypt@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 4/8] ima: define a new template field 'd-type' and a new template 'ima-ngv2' Date: Mon, 7 Feb 2022 20:41:36 -0500 Message-Id: <20220208014140.483447-5-zohar@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220208014140.483447-1-zohar@linux.ibm.com> References: <20220208014140.483447-1-zohar@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: xZOSJXNdO9DX-DZOxIls-4B0yNkko4y6 X-Proofpoint-ORIG-GUID: xZOSJXNdO9DX-DZOxIls-4B0yNkko4y6 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-02-07_07,2022-02-07_02,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 malwarescore=0 adultscore=0 impostorscore=0 mlxscore=0 priorityscore=1501 suspectscore=0 bulkscore=0 lowpriorityscore=0 mlxlogscore=999 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2201110000 definitions=main-2202080006 Precedence: bulk List-ID: X-Mailing-List: linux-fscrypt@vger.kernel.org In preparation to differentiate between regular IMA file hashes and fs-verity's file digests, define a new template field named 'd-type'. Define a new template named 'ima-ngv2', which includes the new 'd-type' field. Signed-off-by: Mimi Zohar --- security/integrity/ima/ima_template.c | 3 +++ security/integrity/ima/ima_template_lib.c | 13 +++++++++++++ security/integrity/ima/ima_template_lib.h | 2 ++ 3 files changed, 18 insertions(+) diff --git a/security/integrity/ima/ima_template.c b/security/integrity/ima/ima_template.c index db1ad6d7a57f..b321342e5bee 100644 --- a/security/integrity/ima/ima_template.c +++ b/security/integrity/ima/ima_template.c @@ -19,6 +19,7 @@ enum header_fields { HDR_PCR, HDR_DIGEST, HDR_TEMPLATE_NAME, static struct ima_template_desc builtin_templates[] = { {.name = IMA_TEMPLATE_IMA_NAME, .fmt = IMA_TEMPLATE_IMA_FMT}, {.name = "ima-ng", .fmt = "d-ng|n-ng"}, + {.name = "ima-ngv2", .fmt = "d-ng|n-ng|d-type"}, {.name = "ima-sig", .fmt = "d-ng|n-ng|sig"}, {.name = "ima-buf", .fmt = "d-ng|n-ng|buf"}, {.name = "ima-modsig", .fmt = "d-ng|n-ng|sig|d-modsig|modsig"}, @@ -40,6 +41,8 @@ static const struct ima_template_field supported_fields[] = { .field_show = ima_show_template_digest_ng}, {.field_id = "n-ng", .field_init = ima_eventname_ng_init, .field_show = ima_show_template_string}, + {.field_id = "d-type", .field_init = ima_eventdigest_type_init, + .field_show = ima_show_template_string}, {.field_id = "sig", .field_init = ima_eventsig_init, .field_show = ima_show_template_sig}, {.field_id = "buf", .field_init = ima_eventbuf_init, diff --git a/security/integrity/ima/ima_template_lib.c b/security/integrity/ima/ima_template_lib.c index 5a5d462ab36d..48c2fcbefacf 100644 --- a/security/integrity/ima/ima_template_lib.c +++ b/security/integrity/ima/ima_template_lib.c @@ -386,6 +386,19 @@ int ima_eventdigest_ng_init(struct ima_event_data *event_data, hash_algo, field_data); } +/* + * This function writes the digest type of an event. + */ +int ima_eventdigest_type_init(struct ima_event_data *event_data, + struct ima_field_data *field_data) +{ + static const char * const digest_type[] = {"ima"}; + + return ima_write_template_field_data(digest_type[0], + strlen(digest_type[0]), + DATA_FMT_STRING, field_data); +} + /* * This function writes the digest of the file which is expected to match the * digest contained in the file's appended signature. diff --git a/security/integrity/ima/ima_template_lib.h b/security/integrity/ima/ima_template_lib.h index c71f1de95753..539a5e354925 100644 --- a/security/integrity/ima/ima_template_lib.h +++ b/security/integrity/ima/ima_template_lib.h @@ -38,6 +38,8 @@ int ima_eventname_init(struct ima_event_data *event_data, struct ima_field_data *field_data); int ima_eventdigest_ng_init(struct ima_event_data *event_data, struct ima_field_data *field_data); +int ima_eventdigest_type_init(struct ima_event_data *event_data, + struct ima_field_data *field_data); int ima_eventdigest_modsig_init(struct ima_event_data *event_data, struct ima_field_data *field_data); int ima_eventname_ng_init(struct ima_event_data *event_data,