The location of the "pcrs" file is changed in newer kernels. Try running "find 
/sys -name pcrs". This will show the path of the "pcrs" file in newer kernels. 
On one of my systems, it is "/sys/devices/pnp0/00:0b/pcrs".

-----Original Message-----
From: Brian E Luckau [mailto:bluc...@sgi.com] 
Sent: Thursday, September 01, 2016 10:33 AM
To: 'tboot-devel@lists.sourceforge.net' <tboot-devel@lists.sourceforge.net>
Subject: EXT: Re: [tboot-devel] PCR values?

In the past using tboot 1.8.x and versions of trousers, tpm tools, etc, etc. 
that came with the distros, I was able to see the PCR values with:

cat /sys/class/misc/tpm0/device/pcrs

Currently I'm in CentOS 7.2 and have compliled and installed tboot 1.9.4.  I 
see this, which with my limited knowledge base tells me something is goign 
right:


[root@server0 ~]# txt-stat | grep measured
          TXT measured launch: TRUE
TBOOT: measured launch succeeded

[root@server0 ~]# txt-stat | grep senter
             senter_done: TRUE


Any idea why I can't see the PCR values?

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