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From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: linux-integrity@vger.kernel.org
Cc: Mimi Zohar <zohar@linux.ibm.com>,
	Jarkko Sakkinen <jarkko@kernel.org>,
	linux-api@vger.kernel.org
Subject: [PATCH v5 2/2] ABI: add sysfs description for tpm exports of PCR registers
Date: Wed, 13 Jan 2021 15:26:34 -0800	[thread overview]
Message-ID: <20210113232634.23242-3-James.Bottomley@HansenPartnership.com> (raw)
In-Reply-To: <20210113232634.23242-1-James.Bottomley@HansenPartnership.com>

Adds the ABI entries for the new

/sys/class/tpm/tpm<n>/pcr-<hash>/<m>

files which are added to export the PCR hash values on a one value per
file basis.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---
 Documentation/ABI/stable/sysfs-class-tpm | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/ABI/stable/sysfs-class-tpm b/Documentation/ABI/stable/sysfs-class-tpm
index 91ca63ec7581..d897ecb9615f 100644
--- a/Documentation/ABI/stable/sysfs-class-tpm
+++ b/Documentation/ABI/stable/sysfs-class-tpm
@@ -194,3 +194,17 @@ Description:	The "tpm_version_major" property shows the TCG spec major version
 		Example output::
 
 		  2
+
+What:		/sys/class/tpm/tpmX/pcr-H/N
+Date:		March 2021
+KernelVersion:	5.12
+Contact:	linux-integrity@vger.kernel.org
+Description:	produces output in compact hex representation for PCR
+		number N from hash bank H.  N is the numeric value of
+		the PCR number and H is the crypto string
+		representation of the hash
+
+		Example output::
+
+		  cat /sys/class/tpm/tpm0/pcr-sha256/7
+		  2ED93F199692DC6788EFA6A1FE74514AB9760B2A6CEEAEF6C808C13E4ABB0D42
-- 
2.26.2


  parent reply	other threads:[~2021-01-14  1:59 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-13 23:26 [PATCH v5 0/2] add sysfs exports for TPM 2 PCR registers James Bottomley
2021-01-13 23:26 ` [PATCH v5 1/2] tpm: add sysfs exports for all banks of " James Bottomley
2021-01-14  7:59   ` Greg KH
2021-01-15  0:21     ` James Bottomley
2021-01-15  6:55       ` Jarkko Sakkinen
2021-01-15 17:10         ` James Bottomley
2021-01-15 13:54       ` Greg KH
2021-01-15 17:26         ` James Bottomley
2021-01-15 18:07           ` James Bottomley
2021-01-15 20:48             ` Joe Perches
2021-01-15 21:06               ` James Bottomley
2021-01-15 21:14                 ` Joe Perches
2021-01-15 20:32         ` Joe Perches
2021-01-15  6:48   ` Jarkko Sakkinen
2021-01-13 23:26 ` James Bottomley [this message]
2021-01-15  6:40   ` [PATCH v5 2/2] ABI: add sysfs description for tpm exports " Jarkko Sakkinen

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