pam_debug 8 Linux-PAM Manual pam_debug PAM module to debug the PAM stack pam_debug.so auth=value cred=value acct=value prechauthtok=value chauthtok=value auth=value open_session=value close_session=value The pam_debug PAM module is intended as a debugging aide for determining how the PAM stack is operating. This module returns what its module arguments tell it to return. auth=value The pam_sm_authenticate3 function will return value. cred=value The pam_sm_setcred3 function will return value. acct=value The pam_sm_acct_mgmt3 function will return value. prechauthtok=value The pam_sm_chauthtok3 function will return value if the PAM_PRELIM_CHECK flag is set. chauthtok=value The pam_sm_chauthtok3 function will return value if the PAM_PRELIM_CHECK flag is not set. open_session=value The pam_sm_open_session3 function will return value. close_session=value The pam_sm_close_session3 function will return value. Where value can be one of: success, open_err, symbol_err, service_err, system_err, buf_err, perm_denied, auth_err, cred_insufficient, authinfo_unavail, user_unknown, maxtries, new_authtok_reqd, acct_expired, session_err, cred_unavail, cred_expired, cred_err, no_module_data, conv_err, authtok_err, authtok_recover_err, authtok_lock_busy, authtok_disable_aging, try_again, ignore, abort, authtok_expired, module_unknown, bad_item, conv_again, incomplete. All module types (auth, account, password and session) are provided. PAM_SUCCESS Default return code if no other value was specified, else specified return value. auth requisite pam_permit.so auth [success=2 default=ok] pam_debug.so auth=perm_denied cred=success auth [default=reset] pam_debug.so auth=success cred=perm_denied auth [success=done default=die] pam_debug.so auth optional pam_debug.so auth=perm_denied cred=perm_denied auth sufficient pam_debug.so auth=success cred=success pam.conf5 , pam.d5 , pam8 pam_debug was written by Andrew G. Morgan <morgan@kernel.org>.