From mboxrd@z Thu Jan 1 00:00:00 1970 From: tomas.winkler@intel.com (Tomas Winkler) Date: Fri, 21 Sep 2018 16:58:05 +0300 Subject: [PATCH v4 06/21] tpm: move tpm1_pcr_extend to tpm1-cmd.c In-Reply-To: <20180921135820.20549-1-tomas.winkler@intel.com> References: <20180921135820.20549-1-tomas.winkler@intel.com> Message-ID: <20180921135820.20549-7-tomas.winkler@intel.com> To: linux-security-module@vger.kernel.org List-Id: linux-security-module.vger.kernel.org Move tpm1_pcr_extend to tpm1-cmd.c and remove unused pcrextend_header structure and EXTEND_PCR_RESULT_SIZE and EXTEND_PCR_RESULT_BODY_SIZE defines. Fixes warning: drivers/char/tpm/tpm-interface.c:609:38: warning: ?pcrextend_header? defined but not used [-Wunused-const-variable=] static const struct tpm_input_header pcrextend_header = { ^~~~~~~~~~~~~~~~ Signed-off-by: Tomas Winkler Reviewed-by: Jarkko Sakkinen --- V2-V3: Rebase V4: Remove defines. drivers/char/tpm/tpm-interface.c | 28 ---------------------------- drivers/char/tpm/tpm.h | 2 ++ drivers/char/tpm/tpm1-cmd.c | 21 +++++++++++++++++++++ 3 files changed, 23 insertions(+), 28 deletions(-) diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index bd8942e56aa7..163c4da23320 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -614,34 +614,6 @@ int tpm_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf) } EXPORT_SYMBOL_GPL(tpm_pcr_read); -#define TPM_ORD_PCR_EXTEND 20 -#define EXTEND_PCR_RESULT_SIZE 34 -#define EXTEND_PCR_RESULT_BODY_SIZE 20 -static const struct tpm_input_header pcrextend_header = { - .tag = cpu_to_be16(TPM_TAG_RQU_COMMAND), - .length = cpu_to_be32(34), - .ordinal = cpu_to_be32(TPM_ORD_PCR_EXTEND) -}; - -static int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash, - char *log_msg) -{ - struct tpm_buf buf; - int rc; - - rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND, TPM_ORD_PCR_EXTEND); - if (rc) - return rc; - - tpm_buf_append_u32(&buf, pcr_idx); - tpm_buf_append(&buf, hash, TPM_DIGEST_SIZE); - - rc = tpm_transmit_cmd(chip, NULL, buf.data, EXTEND_PCR_RESULT_SIZE, - EXTEND_PCR_RESULT_BODY_SIZE, 0, log_msg); - tpm_buf_destroy(&buf); - return rc; -} - /** * tpm_pcr_extend - extend a PCR value in SHA1 bank. * @chip: a &struct tpm_chip instance, %NULL for the default chip diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index a97d72fcda5b..3fb268f43955 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -549,6 +549,8 @@ int tpm_do_selftest(struct tpm_chip *chip); int tpm1_auto_startup(struct tpm_chip *chip); int tpm1_get_timeouts(struct tpm_chip *chip); unsigned long tpm1_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal); +int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash, + const char *log_msg); unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal); int tpm_pm_suspend(struct device *dev); int tpm_pm_resume(struct device *dev); diff --git a/drivers/char/tpm/tpm1-cmd.c b/drivers/char/tpm/tpm1-cmd.c index 12974aa4ea3e..2cf13d92653c 100644 --- a/drivers/char/tpm/tpm1-cmd.c +++ b/drivers/char/tpm/tpm1-cmd.c @@ -414,3 +414,24 @@ int tpm1_get_timeouts(struct tpm_chip *chip) chip->flags |= TPM_CHIP_FLAG_HAVE_TIMEOUTS; return 0; } + +#define TPM_ORD_PCR_EXTEND 20 +int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash, + const char *log_msg) +{ + struct tpm_buf buf; + int rc; + + rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND, TPM_ORD_PCR_EXTEND); + if (rc) + return rc; + + tpm_buf_append_u32(&buf, pcr_idx); + tpm_buf_append(&buf, hash, TPM_DIGEST_SIZE); + + rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE, + TPM_DIGEST_SIZE, 0, log_msg); + + tpm_buf_destroy(&buf); + return rc; +} -- 2.14.4