From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:37498 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755292AbeFYKnU (ORCPT ); Mon, 25 Jun 2018 06:43:20 -0400 Received: from pps.filterd (m0098420.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w5PAeLqd132596 for ; Mon, 25 Jun 2018 06:43:20 -0400 Received: from e14.ny.us.ibm.com (e14.ny.us.ibm.com [129.33.205.204]) by mx0b-001b2d01.pphosted.com with ESMTP id 2jtwuaaru3-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 25 Jun 2018 06:43:19 -0400 Received: from localhost by e14.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 25 Jun 2018 06:43:16 -0400 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 Message-Id: <20180625104312.2213278-1-stefanb@linux.vnet.ibm.com> Sender: linux-integrity-owner@vger.kernel.org List-ID: 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