linux-kernel - Re: [PATCH v6 4/7] tpm: modify tpm_pcr_read() definition to pass a TPM hash algorithm

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Message-ID: <20181204234024.GC1233@linux.intel.com>
Date:   Tue, 4 Dec 2018 15:40:24 -0800
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Roberto Sassu <roberto.sassu@...wei.com>
Cc:     zohar@...ux.ibm.com, david.safford@...com, monty.wiseman@...com,
        linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, silviu.vlasceanu@...wei.com
Subject: Re: [PATCH v6 4/7] tpm: modify tpm_pcr_read() definition to pass a
 TPM hash algorithm

On Tue, Dec 04, 2018 at 09:21:35AM +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@...wei.com>
> Acked-by: Mimi Zohar <zohar@...ux.ibm.com>

Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>

Mimi, Nayna, can you help with testing this (because of the IMA change)?

/Jarkko