From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Roberto Sassu <roberto.sassu@huawei.com>
Cc: zohar@linux.ibm.com, david.safford@ge.com, monty.wiseman@ge.com,
linux-integrity@vger.kernel.org,
linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org, silviu.vlasceanu@huawei.com
Subject: Re: [PATCH v5 4/7] tpm: modify tpm_pcr_read() definition to pass a TPM hash algorithm
Date: Fri, 16 Nov 2018 15:41:12 +0200 [thread overview]
Message-ID: <20181116134112.GC4163@linux.intel.com> (raw)
In-Reply-To: <20181114153108.12907-5-roberto.sassu@huawei.com>
On Wed, Nov 14, 2018 at 04:31:05PM +0100, Roberto Sassu wrote:
> Currently the TPM driver allows other kernel subsystems to read only the
> SHA1 PCR bank. This patch modifies the parameters of tpm_pcr_read() and
> tpm2_pcr_read() to pass a tpm_digest structure, which contains the desired
> hash algorithm. Also, since commit 125a22105410 ("tpm: React correctly to
> RC_TESTING from TPM 2.0 self tests") removed the call to tpm2_pcr_read(),
> the new parameter is expected to be always not NULL.
>
> Due to the API change, IMA functions have been modified.
>
> Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
> Acked-by: Mimi Zohar <zohar@linux.ibm.com>
> ---
> drivers/char/tpm/tpm-interface.c | 9 +++++----
> drivers/char/tpm/tpm.h | 3 ++-
> drivers/char/tpm/tpm2-cmd.c | 23 ++++++++++++++++-------
> include/linux/tpm.h | 6 ++++--
> security/integrity/ima/ima_crypto.c | 10 +++++-----
> 5 files changed, 32 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
> index 96c8261d0f04..04aa39432f58 100644
> --- a/drivers/char/tpm/tpm-interface.c
> +++ b/drivers/char/tpm/tpm-interface.c
> @@ -451,11 +451,12 @@ EXPORT_SYMBOL_GPL(tpm_is_tpm2);
> * tpm_pcr_read - read a PCR value from SHA1 bank
> * @chip: a &struct tpm_chip instance, %NULL for the default chip
> * @pcr_idx: the PCR to be retrieved
> - * @res_buf: the value of the PCR
> + * @digest_struct: the PCR bank and buffer current PCR value is written to
> *
> * Return: same as with tpm_transmit_cmd()
> */
> -int tpm_pcr_read(struct tpm_chip *chip, u32 pcr_idx, u8 *res_buf)
> +int tpm_pcr_read(struct tpm_chip *chip, u32 pcr_idx,
> + struct tpm_digest *digest_struct)
Should be just struct tpm_digest *digest
/Jarkko
next prev parent reply other threads:[~2018-11-16 13:41 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-14 15:31 [PATCH v5 0/7] tpm: retrieve digest size of unknown algorithms from TPM Roberto Sassu
2018-11-14 15:31 ` [PATCH v5 1/7] tpm: dynamically allocate the allocated_banks array Roberto Sassu
2018-11-16 13:36 ` Jarkko Sakkinen
2018-11-14 15:31 ` [PATCH v5 2/7] tpm: remove definition of TPM2_ACTIVE_PCR_BANKS Roberto Sassu
2018-11-16 13:38 ` Jarkko Sakkinen
2018-11-28 7:50 ` Roberto Sassu
2018-11-28 12:17 ` Roberto Sassu
2018-11-29 12:04 ` Roberto Sassu
2018-11-30 19:41 ` Jarkko Sakkinen
2018-11-30 19:45 ` Jarkko Sakkinen
2018-11-30 22:18 ` Jarkko Sakkinen
2018-12-03 9:59 ` Roberto Sassu
2018-12-03 17:31 ` Jarkko Sakkinen
2018-11-14 15:31 ` [PATCH v5 3/7] tpm: rename and export tpm2_digest and tpm2_algorithms Roberto Sassu
2018-11-14 15:31 ` [PATCH v5 4/7] tpm: modify tpm_pcr_read() definition to pass a TPM hash algorithm Roberto Sassu
2018-11-16 13:41 ` Jarkko Sakkinen [this message]
2018-11-14 15:31 ` [PATCH v5 5/7] tpm: retrieve digest size of unknown algorithms with PCR read Roberto Sassu
2018-11-14 15:31 ` [PATCH v5 6/7] tpm: ensure that the output of PCR read contains the correct digest size Roberto Sassu
2018-11-16 13:41 ` Jarkko Sakkinen
2018-11-16 16:06 ` Roberto Sassu
2018-11-18 7:32 ` Jarkko Sakkinen
2018-11-19 8:14 ` Roberto Sassu
2018-11-19 14:33 ` Jarkko Sakkinen
2018-11-19 15:09 ` Roberto Sassu
2018-11-19 16:07 ` Jarkko Sakkinen
2018-11-28 8:40 ` Roberto Sassu
2018-11-28 19:19 ` Jarkko Sakkinen
2018-11-14 15:31 ` [PATCH v5 7/7] tpm: pass an array of tpm_bank_list structures to tpm_pcr_extend() Roberto Sassu
2018-11-16 15:03 ` Jarkko Sakkinen
2018-11-16 15:55 ` Roberto Sassu
2018-11-18 7:27 ` Jarkko Sakkinen
2018-11-19 4:57 ` Mimi Zohar
2018-11-19 8:16 ` Roberto Sassu
2018-11-19 14:33 ` Mimi Zohar
2018-11-19 14:39 ` Jarkko Sakkinen
2018-11-18 7:29 ` Jarkko Sakkinen
2018-11-19 8:22 ` Roberto Sassu
2018-11-19 14:42 ` Jarkko Sakkinen
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