Commit 52d0848e authored by James Bottomley's avatar James Bottomley Committed by Jarkko Sakkinen
Browse files

ABI: add sysfs description for tpm exports of PCR registers 



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: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
Acked-by: default avatarJarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: default avatarJarkko Sakkinen <jarkko@kernel.org>
parent aab73d95

Documentation/ABI/stable/sysfs-class-tpm

+14 −0
Original line number Diff line number Diff line
@@ -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