title: I get permission denied Error when i want to activate tcsd service
body: <p>I try to activate tpm 1.2. i installed Trousers package and now i want to active tcsd service.
  i try to activate it with both of this commands:</p>
  <pre><code>sudo tcsd -f 
  sudo systemctl start tcsd
  </code></pre>
  <p>but both failed. i checked status and i saw this error:</p>
  <pre><code>TCSD TCS ERROR: system PS: open() of /var/lib/tpm/system.data failed: Permission denied
  tcsd.service: Main process exited, code=exited, status=4/NOPERMISSION
  </code></pre>
  <p>since now i tried systemd override user=root , i tried to change pemissions with chmod . and non of them worked.
  these are my current permissions :</p>
  <pre><code>ls -l /etc/tcsd.conf
  -rw-r----- 1 root tss 7046 Jul  9 07:52 /etc/tcsd.conf
  </code></pre>