NAME

       pam_localuser - require users to be listed in /etc/passwd

SYNOPSIS

       pam_localuser.so [debug] [file=/path/passwd]

DESCRIPTION

       pam_localuser is a PAM module to help implementing site-wide login policies, where they
       typically include a subset of the network's users and a few accounts that are local to a
       particular workstation. Using pam_localuser and pam_wheel or pam_listfile is an effective
       way to restrict access to either local users and/or a subset of the network's users.

       This could also be implemented using pam_listfile.so and a very short awk script invoked
       by cron, but it's common enough to have been separated out.

OPTIONS

       debug
           Print debug information.

       file=/path/passwd
           Use a file other than /etc/passwd.

MODULE TYPES PROVIDED

       All module types (account, auth, password and session) are provided.

RETURN VALUES

       PAM_SUCCESS
           The new localuser was set successfully.

       PAM_BUF_ERR
           Memory buffer error.

       PAM_CONV_ERR
           The conversation method supplied by the application failed to obtain the username.

       PAM_INCOMPLETE
           The conversation method supplied by the application returned PAM_CONV_AGAIN.

       PAM_SERVICE_ERR
           The user name is not valid or the passwd file is unavailable.

       PAM_PERM_DENIED
           The user is not listed in the passwd file.

EXAMPLES

       Add the following lines to /etc/pam.d/su to allow only local users or group wheel to use
       su.

           account sufficient pam_localuser.so
           account required pam_wheel.so

FILES

       /etc/passwd
           Local user account information.

SEE ALSO

       pam.conf(5), pam.d(5), pam(7)

AUTHOR

       pam_localuser was written by Nalin Dahyabhai <nalin@redhat.com>.