From patchwork Wed Jul 7 02:43:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Snowberg X-Patchwork-Id: 12361539 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 31DE7C07E9E for ; Wed, 7 Jul 2021 02:45:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1652561CB7 for ; Wed, 7 Jul 2021 02:45:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230112AbhGGCr5 (ORCPT ); Tue, 6 Jul 2021 22:47:57 -0400 Received: from mx0a-00069f02.pphosted.com ([205.220.165.32]:60666 "EHLO mx0a-00069f02.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230018AbhGGCrx (ORCPT ); Tue, 6 Jul 2021 22:47:53 -0400 Received: from pps.filterd (m0246627.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 1672aK8d015829; Wed, 7 Jul 2021 02:44:36 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : content-type : mime-version; s=corp-2020-01-29; bh=YpggEFtvAPAAGMDIHbav61y9dIX1TvkDnvtZP9SGZYU=; b=O+66iPmyGHm4Z8DebrU1wwAU84G7HHoi+I53FIBDRNIo/OMxc+VanFYq/g2ot2Dh8VQg UDQOV5pDZzJAyGXItQetU4QNIhaXTaRBsal5uDgBJq/whAFbAqP9b0aSzla/g38DkFDP Bh/I2yAHETR46yemywZwMi6lIiR6rHg90oYqlwt7gQv0lEUupdWryrnxJUv1BroN4en/ O1Za+e2iTb4Pf9gxn/VpLz9CF9C6hw2BXiENOvubLjpqEOrZi7IOD4YOk1RIlMJDHLVb ie6TSKp53gtN4Hv4v1y5oGnY9reifS7zQ8N7gr+LqTFU7rk4vt5CI/a2DluWNwWh+fLB SA== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by mx0b-00069f02.pphosted.com with ESMTP id 39m27hb64y-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 07 Jul 2021 02:44:36 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 1672aI1i007653; Wed, 7 Jul 2021 02:44:35 GMT Received: from nam04-mw2-obe.outbound.protection.outlook.com (mail-mw2nam08lp2175.outbound.protection.outlook.com [104.47.73.175]) by aserp3020.oracle.com with ESMTP id 39jfq9phb7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 07 Jul 2021 02:44:35 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=UqKI+Iw4fjTFcxli9qncmwaB/gTzSVLrr4W7yEbsY6z7+hmMrTRLQwUuH5bIA62bATnqwvftTbDFCEHRwjUTBZYxtGLV6/m/t9BUf/Z5uGhWyMM1VJc7jbjNjMX/NBszwhpqVSp4EzfouYcUkhlCNLrxK28RzJKmAnyX4O7/FyblkEowDT/F/n2rssDaQejZTtNuV3rKXfxDGWLje5MvImF1Lu1gwaojBCPZVryqCfDdAj+qE2UWBMrGjwOdEIkx18b81KJ0G0O6SNDRijFl2s6S7uOjAMTlCF2P+O1qGqi2h6vr4bhs9gxc1lsW8gFjYsv7u7zZ3kjFrsO+1hFNAg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=YpggEFtvAPAAGMDIHbav61y9dIX1TvkDnvtZP9SGZYU=; b=DmLFAJ5iV2FCMD8a5L6gyFXELzWKV+J6WoGhQ8WjHdgcBU1T8APOokciKG/mD7dzGCEE5LGwD/HDysJnDVz8fqQSFVpm1JnRGG6LMBF2ddZ0WWtxwxCkk06ar5JLZ0jCmgJ4OsRFvCd+d5F0oQSZxifKSCWN2JiBmJRhl4FOaHjGecV7eLuiJ1aweYfWQ2KUTJZLhk2Op4DFhsRlGCdPBO9FLllpnJjOI4avFiDbUYjljU/7mfxSveFeXONI8QhwHKtlfWYUTVNVc1zE/SststrLdJOk8bJ71Pm5mvbd2nWtJFIlDBMe3Mp2OWFmM5ziXJleJkHe9ru8AidJ6Rw9MA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=YpggEFtvAPAAGMDIHbav61y9dIX1TvkDnvtZP9SGZYU=; b=H8BwpeYQiLZoDY2q2vUtttXHVWFAzHSrVWlcSZDK7nEBBU/MAPVcGGIsFEdUNa1mdLwwe54LbdfVKP2p+HAh32gxGe/IcvY3YXN0/pRtlViKGa8ik/xiRgFDL4gU3llBJyqdWCPMPbHKtAQLs9XeyRO2vlATVZ85pXnddKAV1Uk= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=oracle.com; Received: from CH2PR10MB4150.namprd10.prod.outlook.com (2603:10b6:610:ac::13) by CH2PR10MB3863.namprd10.prod.outlook.com (2603:10b6:610:c::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4287.24; Wed, 7 Jul 2021 02:44:32 +0000 Received: from CH2PR10MB4150.namprd10.prod.outlook.com ([fe80::a890:e571:de3a:7197]) by CH2PR10MB4150.namprd10.prod.outlook.com ([fe80::a890:e571:de3a:7197%8]) with mapi id 15.20.4287.027; Wed, 7 Jul 2021 02:44:32 +0000 From: Eric Snowberg To: keyrings@vger.kernel.org, linux-integrity@vger.kernel.org, zohar@linux.ibm.com, dhowells@redhat.com, dwmw2@infradead.org, herbert@gondor.apana.org.au, davem@davemloft.net, jarkko@kernel.org, jmorris@namei.org, serge@hallyn.com Cc: eric.snowberg@oracle.com, keescook@chromium.org, gregkh@linuxfoundation.org, torvalds@linux-foundation.org, scott.branden@broadcom.com, weiyongjun1@huawei.com, nayna@linux.ibm.com, ebiggers@google.com, ardb@kernel.org, nramas@linux.microsoft.com, lszubowi@redhat.com, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-security-module@vger.kernel.org, James.Bottomley@HansenPartnership.com, pjones@redhat.com, glin@suse.com, konrad.wilk@oracle.com Subject: [PATCH RFC 04/12] integrity: add integrity_destroy_keyring Date: Tue, 6 Jul 2021 22:43:55 -0400 Message-Id: <20210707024403.1083977-5-eric.snowberg@oracle.com> X-Mailer: git-send-email 2.18.4 In-Reply-To: <20210707024403.1083977-1-eric.snowberg@oracle.com> References: <20210707024403.1083977-1-eric.snowberg@oracle.com> X-ClientProxiedBy: SJ0PR03CA0245.namprd03.prod.outlook.com (2603:10b6:a03:3a0::10) To CH2PR10MB4150.namprd10.prod.outlook.com (2603:10b6:610:ac::13) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.us.oracle.com (148.87.23.5) by SJ0PR03CA0245.namprd03.prod.outlook.com (2603:10b6:a03:3a0::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4308.20 via Frontend Transport; Wed, 7 Jul 2021 02:44:30 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 78a6d3a6-b2fb-428d-f4d7-08d940f1265c X-MS-TrafficTypeDiagnostic: CH2PR10MB3863: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:213; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CH2PR10MB4150.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(39860400002)(136003)(366004)(346002)(396003)(376002)(921005)(107886003)(6486002)(7696005)(316002)(66946007)(1076003)(44832011)(86362001)(38350700002)(6666004)(36756003)(83380400001)(186003)(4326008)(956004)(26005)(7416002)(8676002)(52116002)(2906002)(38100700002)(2616005)(8936002)(66476007)(5660300002)(478600001)(66556008);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 78a6d3a6-b2fb-428d-f4d7-08d940f1265c X-MS-Exchange-CrossTenant-AuthSource: CH2PR10MB4150.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jul 2021 02:44:32.6957 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: /s0vCg5hHsRfrVYe4JKeayTgAOuPhn5NmTNzkEcYsPBi1FvleHkvEiqTCN2/nRrExyVGHR7IpFvw8QVYway6vMyillnEDVFycS/rCV1j7xk= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR10MB3863 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=10037 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 spamscore=0 phishscore=0 mlxscore=0 bulkscore=0 malwarescore=0 adultscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2107070012 X-Proofpoint-ORIG-GUID: dO-djTem9x3AGNBNlzsjFF1J7T2sxu83 X-Proofpoint-GUID: dO-djTem9x3AGNBNlzsjFF1J7T2sxu83 Precedence: bulk List-ID: X-Mailing-List: keyrings@vger.kernel.org Not all kernel keyrings need to survive past boot. Add a destroy function to remove a keyring no longer needed. Signed-off-by: Eric Snowberg --- security/integrity/digsig.c | 8 ++++++++ security/integrity/integrity.h | 5 +++++ 2 files changed, 13 insertions(+) diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c index 3b06a01bd0fd..a8436c6b93ec 100644 --- a/security/integrity/digsig.c +++ b/security/integrity/digsig.c @@ -145,6 +145,14 @@ int __init integrity_init_keyring(const unsigned int id) return __integrity_init_keyring(id, perm, restriction); } +void __init integrity_destroy_keyring(const unsigned int id) +{ + if (id >= INTEGRITY_KEYRING_MAX) + return; + key_put(keyring[id]); + keyring[id] = NULL; +} + static int __init integrity_add_key(const unsigned int id, const void *data, off_t size, key_perm_t perm) { diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h index 547425c20e11..f801b2076f01 100644 --- a/security/integrity/integrity.h +++ b/security/integrity/integrity.h @@ -164,6 +164,7 @@ int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen, int integrity_modsig_verify(unsigned int id, const struct modsig *modsig); int __init integrity_init_keyring(const unsigned int id); +void __init integrity_destroy_keyring(const unsigned int id); int __init integrity_load_x509(const unsigned int id, const char *path); int __init integrity_load_cert(const unsigned int id, const char *source, const void *data, size_t len, key_perm_t perm); @@ -187,6 +188,10 @@ static inline int integrity_init_keyring(const unsigned int id) return 0; } +static inline void __init integrity_destroy_keyring(const unsigned int id) +{ +} + static inline int __init integrity_load_cert(const unsigned int id, const char *source, const void *data, size_t len,