pam_succeed_if 8 Linux-PAM pam_succeed_if test account characteristics pam_succeed_if.so flag condition pam_succeed_if.so is designed to succeed or fail authentication based on characteristics of the account belonging to the user being authenticated. One use is to select whether to load other modules based on this test. The module should be given one or more conditions as module arguments, and authentication will succeed only if all of the conditions are met. The following flags are supported: debug Turns on debugging messages sent to syslog. use_uid Evaluate conditions using the account of the user whose UID the application is running under instead of the user being authenticated. quiet Don't log failure or success to the system log. quiet_fail Don't log failure to the system log. quiet_success Don't log success to the system log. Conditions are three words: a field, a test, and a value to test for. Available fields are user, uid, gid, shell and home: field < number Field has a value numerically less than number. field <= number Field has a value numerically less than or equal to number. field eq number Field has a value numerically less equal to number. field >= number Field has a value numerically greater than or equal to number. field > number Field has a value numerically greater than number. field ne number Field has a value numerically different from number. field = string Field exactly matches the given string. field != string Field does not match the given string. field =~ glob Field matches the given glob. field !~ glob Field does not match the given glob. user ingroup group User is in given group. user notingroup group User is not in given group. The auth and account services are supported. PAM_SUCCESS The condition was true. PAM_AUTH_ERR The condition was false. PAM_SERVICE_ERR A service error occured or the arguments can't be parsed as numbers. To emulate the behaviour of pam_wheel, except there is no fallback to group 0: auth required pam_succeed_if.so quiet user ingroup wheel Given that the type matches, only loads the othermodule rule if the UID is over 500. Adjust the number after default to skip several rules. type [default=1 success=ignore] pam_succeed_if.so quiet uid > 500 type required othermodule.so arguments... glob7 , pam8 Nalin Dahyabhai <nalin@redhat.com>