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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 20 Jun 2018 14:42:39 -0600 Received: from b03ledav003.gho.boulder.ibm.com (b03ledav003.gho.boulder.ibm.com [9.17.130.234]) by b03cxnp08025.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w5KKgcJ918350418 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 20 Jun 2018 13:42:38 -0700 Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 79A566A04F; Wed, 20 Jun 2018 14:42:38 -0600 (MDT) Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EEA906A047; Wed, 20 Jun 2018 14:42:37 -0600 (MDT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP; Wed, 20 Jun 2018 14:42:37 -0600 (MDT) 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 v2 0/4] Have IMA find and use a tpm_chip until system shutdown Date: Wed, 20 Jun 2018 16:42:32 -0400 X-Mailer: git-send-email 2.14.4 X-TM-AS-GCONF: 00 x-cbid: 18062020-0020-0000-0000-00000E32E3FF X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009228; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000265; SDB=6.01049869; UDB=6.00537986; IPR=6.00828842; MB=3.00021764; MTD=3.00000008; XFM=3.00000015; UTC=2018-06-20 20:42:41 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18062020-0021-0000-0000-0000620270CF Message-Id: <20180620204236.1572523-1-stefanb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-06-20_09:,, 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=807 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1805220000 definitions=main-1806200224 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 v1->v2: - use the kref of the device via get_device()/put_device() Stefan Berger (4): tpm: Implement tpm_chip_find() and tpm_chip_put() for other subsystems ima: Implement ima_shutdown and register it as a reboot_notifier ima: Use tpm_chip_find() and access TPM functions using it ima: Get rid of ima_used_chip and use ima_tpm_chip != NULL instead drivers/char/tpm/tpm-chip.c | 37 +++++++++++++++++++++++++++++++++++++ include/linux/tpm.h | 9 +++++++++ security/integrity/ima/ima.h | 4 +++- security/integrity/ima/ima_crypto.c | 14 +++++++++++--- security/integrity/ima/ima_init.c | 36 ++++++++++++++++++++++++++---------- security/integrity/ima/ima_queue.c | 9 ++++++--- 6 files changed, 92 insertions(+), 17 deletions(-) -- 2.13.6