6.23. pam_nologin - prevent non-root users from login

6.23. pam_nologin - prevent non-root users from login
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pam_nologin.so [ file=/path/nologin ] [ successok ]

6.23.1. DESCRIPTION

pam_nologin is a PAM module that prevents users from logging into the system when /var/run/nologin or /etc/nologin exists. The contents of the file are displayed to the user. The pam_nologin module has no effect on the root user's ability to log in.

6.23.2. OPTIONS

file=/path/nologin: Use this file instead the default /var/run/nologin or /etc/nologin.
successok: Return PAM_SUCCESS if no file exists, the default is PAM_IGNORE.

6.23.3. MODULE TYPES PROVIDED

The auth and acct module types are provided.

6.23.4. RETURN VALUES

PAM_AUTH_ERR: The user is not root and /etc/nologin exists, so the user is not permitted to log in.
PAM_BUF_ERR: Memory buffer error.
PAM_IGNORE: This is the default return value.
PAM_SUCCESS: Success: either the user is root or the nologin file does not exist.
PAM_USER_UNKNOWN: User not known to the underlying authentication module.

6.23.5. EXAMPLES

The suggested usage for /etc/pam.d/login is:

auth  required  pam_nologin.so

6.23.6. AUTHOR

pam_nologin was written by Michael K. Johnson <johnsonm@redhat.com>.

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