pam/pam.d/config-util

   1 #%PAM-1.0
   2 auth            sufficient      pam_rootok.so
   3 auth            sufficient      pam_timestamp.so
   4 auth            include         system-auth
   5 account         required        pam_permit.so
   6 session         required        pam_permit.so
   7 session         optional        pam_xauth.so
   8 session         optional        pam_timestamp.so