auth    [success=2 default=ignore]      pam_p11.so 
/usr/local/lib/libcvP11.so
# here are the per-package modules (the "Primary" block)
auth    [success=1 default=ignore]      pam_unix.so nullok_secure
# here's the fallback if no module succeeds
auth    requisite                       pam_deny.so
# prime the stack with a positive return value if there isn't one 
already;
# this avoids us returning an error just because nothing sets a success 
code
# since the modules above will each just jump around
auth    required                        pam_permit.so
# and here are more per-package modules (the "Additional" block)
auth    optional                        pam_group.so
auth    optional                        pam_cap.so
# end of pam-auth-update config