From mboxrd@z Thu Jan 1 00:00:00 1970 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=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 2E6E6C43144 for ; Tue, 26 Jun 2018 11:06:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E09F32699C for ; Tue, 26 Jun 2018 11:06:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E09F32699C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.vnet.ibm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934665AbeFZLGa (ORCPT ); Tue, 26 Jun 2018 07:06:30 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:38904 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S934406AbeFZLGZ (ORCPT ); Tue, 26 Jun 2018 07:06:25 -0400 Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w5QB44RP088634 for ; Tue, 26 Jun 2018 07:06:24 -0400 Received: from e14.ny.us.ibm.com (e14.ny.us.ibm.com [129.33.205.204]) by mx0a-001b2d01.pphosted.com with ESMTP id 2juk9war7m-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 26 Jun 2018 07:06:24 -0400 Received: from localhost by e14.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 26 Jun 2018 07:06:21 -0400 Received: from b01ledav004.gho.pok.ibm.com (b01ledav004.gho.pok.ibm.com [9.57.199.109]) by b01cxnp22036.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w5QB6KoL7012630 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 26 Jun 2018 11:06:20 GMT Received: from b01ledav004.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 83E1A112065; Tue, 26 Jun 2018 07:06:15 -0400 (EDT) Received: from b01ledav004.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 754E4112063; Tue, 26 Jun 2018 07:06:15 -0400 (EDT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b01ledav004.gho.pok.ibm.com (Postfix) with ESMTP; Tue, 26 Jun 2018 07:06:15 -0400 (EDT) From: Stefan Berger To: linux-integrity@vger.kernel.org, jarkko.sakkinen@linux.intel.com, zohar@linux.vnet.ibm.com Cc: jgg@ziepe.ca, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, Stefan Berger Subject: [PATCH v5 0/5] Have IMA find and use a tpm_chip until system shutdown Date: Tue, 26 Jun 2018 07:06:14 -0400 X-Mailer: git-send-email 2.14.4 X-TM-AS-GCONF: 00 x-cbid: 18062611-0052-0000-0000-000003043A40 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009258; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000266; SDB=6.01052547; UDB=6.00539596; IPR=6.00830472; MB=3.00021860; MTD=3.00000008; XFM=3.00000015; UTC=2018-06-26 11:06:23 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18062611-0053-0000-0000-00005D25205B Message-Id: <20180626110619.2362791-1-stefanb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-06-26_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1806210000 definitions=main-1806260126 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series of patches converts IMA's usage of the tpm_chip to find a TPM chip initially and use it until the machine is shut down. To do this we need to introduce a kref for the tpm_chip that IMA and all other users of a tpm_chip hold onto until they don't need the TPM chip anymore. Stefan v4->v5: - repost with fixed changelog and posted to linux-security-module v3->v4: - followed Jason's suggestions: - extended docs of tpm_find_get_ops() - calling new function tpm_default_chip() - new patch 3 that uses tpm_default_chip() in tpm_find_get_ops() v2->v3: - renaming tpm_chip_find_get() to tpm_get_ops() - IMA does not lock access to ima_tpm_chip anymore - IMA does not have a reboot notifier to release the chip anymore v1->v2: - use the kref of the device via get_device()/put_device() Stefan Berger (5): tpm: rename tpm_chip_find_get() to tpm_find_get_ops() tpm: Implement tpm_default_chip() to find a TPM chip tpm: Convert tpm_find_get_ops() to use tpm_default_chip() ima: Use tpm_default_chip() and call TPM functions with a tpm_chip ima: Get rid of ima_used_chip and use ima_tpm_chip != NULL instead drivers/char/tpm/tpm-chip.c | 68 +++++++++++++++++++---------- drivers/char/tpm/tpm-interface.c | 14 +++--- drivers/char/tpm/tpm.h | 2 +- include/linux/tpm.h | 5 +++ security/integrity/ima/ima.h | 2 +- security/integrity/ima/ima_crypto.c | 4 +- security/integrity/ima/ima_init.c | 16 +++---- security/integrity/ima/ima_queue.c | 4 +- 8 files changed, 69 insertions(+), 46 deletions(-) -- 2.17.1