GNU/Linux man pages
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GNU/Linux |
Debian 6.0.7(Squeeze) |
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pam_nologin(8) |
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pam_nologin − Prevent non−root users from login
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pam_nologin.so [file=/path/nologin] [successok] |
pam_nologin is a PAM module that prevents users from logging into the system when /etc/nologin exists. The contents of the /etc/nologin file are displayed to the user. The pam_nologin module has no effect on the root user´s ability to log in.
file=/path/nologin
Use this file instead the default /etc/nologin.
successok
Return PAM_SUCCESS if no file exists, the default is PAM_IGNORE.
The auth and acct module types are provided.
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 /etc/nologin file does not exist.
PAM_USER_UNKNOWN
User not known to the underlying authentication module.
The suggested usage for /etc/pam.d/login is:
auth required pam_nologin.so
In order to make this module effective, all login methods should be secured by it. It should be used as a required method listed before any sufficient methods in order to get standard Unix nologin semantics. Note, the use of successok module argument causes the module to return PAM_SUCCESS and as such would break such a configuration − failing sufficient modules would lead to a successful login because the nologin module succeeded.
nologin(5), pam.conf(5), pam.d(5), pam(7)
pam_nologin was written by Michael K. Johnson <johnsonm@redhat.com>.
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pam_nologin(8) | |