From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:49128 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932216AbeFYKnZ (ORCPT ); Mon, 25 Jun 2018 06:43:25 -0400 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w5PAeuto056118 for ; Mon, 25 Jun 2018 06:43:24 -0400 Received: from e17.ny.us.ibm.com (e17.ny.us.ibm.com [129.33.205.207]) by mx0b-001b2d01.pphosted.com with ESMTP id 2jtwqrb383-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 25 Jun 2018 06:43:24 -0400 Received: from localhost by e17.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 25 Jun 2018 06:43:23 -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 5/5] ima: Get rid of ima_used_chip and use ima_tpm_chip != NULL instead Date: Mon, 25 Jun 2018 06:43:12 -0400 In-Reply-To: <20180625104312.2213278-1-stefanb@linux.vnet.ibm.com> References: <20180625104312.2213278-1-stefanb@linux.vnet.ibm.com> Message-Id: <20180625104312.2213278-6-stefanb@linux.vnet.ibm.com> Sender: linux-integrity-owner@vger.kernel.org List-ID: Get rid of ima_used_chip and use ima_tpm_chip variable instead for determining whether to use the TPM chip. Signed-off-by: Stefan Berger --- security/integrity/ima/ima.h | 1 - security/integrity/ima/ima_crypto.c | 2 +- security/integrity/ima/ima_init.c | 7 ++----- security/integrity/ima/ima_queue.c | 2 +- 4 files changed, 4 insertions(+), 8 deletions(-) diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h index 35409461a3f2..2ab1affffa36 100644 --- a/security/integrity/ima/ima.h +++ b/security/integrity/ima/ima.h @@ -53,7 +53,6 @@ enum tpm_pcrs { TPM_PCR0 = 0, TPM_PCR8 = 8 }; extern int ima_policy_flag; /* set during initialization */ -extern int ima_used_chip; extern int ima_hash_algo; extern int ima_appraise; extern struct tpm_chip *ima_tpm_chip; diff --git a/security/integrity/ima/ima_crypto.c b/security/integrity/ima/ima_crypto.c index 88082f35adb2..7e7e7e7c250a 100644 --- a/security/integrity/ima/ima_crypto.c +++ b/security/integrity/ima/ima_crypto.c @@ -631,7 +631,7 @@ int ima_calc_buffer_hash(const void *buf, loff_t len, static void __init ima_pcrread(int idx, u8 *pcr) { - if (!ima_used_chip) + if (!ima_tpm_chip) return; if (tpm_pcr_read(ima_tpm_chip, idx, pcr) != 0) diff --git a/security/integrity/ima/ima_init.c b/security/integrity/ima/ima_init.c index 1437ed3dbccc..faac9ecaa0ae 100644 --- a/security/integrity/ima/ima_init.c +++ b/security/integrity/ima/ima_init.c @@ -26,7 +26,6 @@ /* name for boot aggregate entry */ static const char *boot_aggregate_name = "boot_aggregate"; -int ima_used_chip; struct tpm_chip *ima_tpm_chip; /* Add the boot aggregate to the IMA measurement list and extend @@ -65,7 +64,7 @@ static int __init ima_add_boot_aggregate(void) iint->ima_hash->algo = HASH_ALGO_SHA1; iint->ima_hash->length = SHA1_DIGEST_SIZE; - if (ima_used_chip) { + if (ima_tpm_chip) { result = ima_calc_boot_aggregate(&hash.hdr); if (result < 0) { audit_cause = "hashing_error"; @@ -110,9 +109,7 @@ int __init ima_init(void) int rc; ima_tpm_chip = tpm_default_chip(); - - ima_used_chip = ima_tpm_chip != NULL; - if (!ima_used_chip) + if (!ima_tpm_chip) pr_info("No TPM chip found, activating TPM-bypass!\n"); rc = integrity_init_keyring(INTEGRITY_KEYRING_IMA); diff --git a/security/integrity/ima/ima_queue.c b/security/integrity/ima/ima_queue.c index c6303fa19a49..b186819bd5aa 100644 --- a/security/integrity/ima/ima_queue.c +++ b/security/integrity/ima/ima_queue.c @@ -142,7 +142,7 @@ static int ima_pcr_extend(const u8 *hash, int pcr) { int result = 0; - if (!ima_used_chip) + if (!ima_tpm_chip) return result; result = tpm_pcr_extend(ima_tpm_chip, pcr, hash); -- 2.17.1