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 59657C43144 for ; Mon, 25 Jun 2018 10:44:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1D30823C6A for ; Mon, 25 Jun 2018 10:44:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1D30823C6A 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 S1755310AbeFYKnU (ORCPT ); Mon, 25 Jun 2018 06:43:20 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:54150 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755200AbeFYKnS (ORCPT ); Mon, 25 Jun 2018 06:43:18 -0400 Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w5PAdlUT091566 for ; Mon, 25 Jun 2018 06:43:18 -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 2jtw0n5092-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 25 Jun 2018 06:43:17 -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) Mon, 25 Jun 2018 06:43:14 -0400 Received: from b01ledav005.gho.pok.ibm.com (b01ledav005.gho.pok.ibm.com [9.57.199.110]) by b01cxnp23032.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w5PAhD2W17957242 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 25 Jun 2018 10:43:13 GMT Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0A4E4AE05C; Mon, 25 Jun 2018 06:43:07 -0400 (EDT) Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E7C48AE062; Mon, 25 Jun 2018 06:43:06 -0400 (EDT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b01ledav005.gho.pok.ibm.com (Postfix) with ESMTP; Mon, 25 Jun 2018 06:43:06 -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, Stefan Berger Subject: [PATCH v4 0/5] Have IMA find and use a tpm_chip until system shutdown Date: Mon, 25 Jun 2018 06:43:07 -0400 X-Mailer: git-send-email 2.14.4 X-TM-AS-GCONF: 00 x-cbid: 18062510-0052-0000-0000-00000303ABE7 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009251; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000265; SDB=6.01052060; UDB=6.00539303; IPR=6.00829985; MB=3.00021846; MTD=3.00000008; XFM=3.00000015; UTC=2018-06-25 10:43:16 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18062510-0053-0000-0000-00005D221445 Message-Id: <20180625104312.2213278-1-stefanb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-06-25_05:,, 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=857 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1806210000 definitions=main-1806250125 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 v3->v4: - followed Jason's suggestions 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