[PATCH v5 2/2] ABI: add sysfs description for tpm exports of PCR registers
From: James Bottomley <James.Bottomley@HansenPartnership.com>
Date: 2021-01-14 01:59:52
Also in:
linux-api
Subsystem:
the rest · Maintainer:
Linus Torvalds
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