Name
pam_localuser - require users to be listed in /etc/passwdSynopsis
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\*(Aqs 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\*(Aqs users.
This could also be implemented using pam_listfile.so and a very short awk script invoked by cron, but it\*(Aqs 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 <[email protected]>.