1 files changed, 110 insertions, 0 deletions
diff --git a/modules/pam_nologin/pam_nologin.8 b/modules/pam_nologin/pam_nologin.8
new file mode 100644
index 00000000..0ddad026
--- /dev/null
+++ b/modules/pam_nologin/pam_nologin.8
@@ -0,0 +1,110 @@
+.\"     Title: pam_nologin
+.\"    Author: 
+.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/>
+.\"      Date: 04/16/2008
+.\"    Manual: Linux-PAM Manual
+.\"    Source: Linux-PAM Manual
+.\"
+.TH "PAM_NOLOGIN" "8" "04/16/2008" "Linux-PAM Manual" "Linux\-PAM Manual"
+.\" disable hyphenation
+.nh
+.\" disable justification (adjust text to left margin only)
+.ad l
+.SH "NAME"
+pam_nologin - Prevent non-root users from login
+.SH "SYNOPSIS"
+.HP 15
+\fBpam_nologin\.so\fR [file=\fI/path/nologin\fR] [successok]
+.SH "DESCRIPTION"
+.PP
+pam_nologin is a PAM module that prevents users from logging into the system when
+\fI/etc/nologin\fR
+exists\. The contents of the
+\fI/etc/nologin\fR
+file are displayed to the user\. The pam_nologin module has no effect on the root user\'s ability to log in\.
+.SH "OPTIONS"
+.PP
+\fBfile=\fR\fB\fI/path/nologin\fR\fR
+.RS 4
+Use this file instead the default
+\fI/etc/nologin\fR\.
+.RE
+.PP
+\fBsuccessok\fR
+.RS 4
+Return PAM_SUCCESS if no file exists, the default is PAM_IGNORE\.
+.RE
+.SH "MODULE SERVICES PROVIDED"
+.PP
+The
+\fBauth\fR
+and
+\fBacct\fR
+services are supported\.
+.SH "RETURN VALUES"
+.PP
+PAM_AUTH_ERR
+.RS 4
+The user is not root and
+\fI/etc/nologin\fR
+exists, so the user is not permitted to log in\.
+.RE
+.PP
+PAM_BUF_ERR
+.RS 4
+Memory buffer error\.
+.RE
+.PP
+PAM_IGNORE
+.RS 4
+This is the default return value\.
+.RE
+.PP
+PAM_SUCCESS
+.RS 4
+Success: either the user is root or the
+\fI/etc/nologin\fR
+file does not exist\.
+.RE
+.PP
+PAM_USER_UNKNOWN
+.RS 4
+User not known to the underlying authentication module\.
+.RE
+.SH "EXAMPLES"
+.PP
+The suggested usage for
+\fI/etc/pam\.d/login\fR
+is:
+.sp
+.RS 4
+.nf
+auth  required  pam_nologin\.so
+      
+.fi
+.RE
+.sp
+.SH "NOTES"
+.PP
+In order to make this module effective, all login methods should be secured by it\. It should be used as a
+\fIrequired\fR
+method listed before any
+\fIsufficient\fR
+methods in order to get standard Unix nologin semantics\. Note, the use of
+\fBsuccessok\fR
+module argument causes the module to return
+\fIPAM_SUCCESS\fR
+and as such would break such a configuration \- failing
+\fIsufficient\fR
+modules would lead to a successful login because the nologin module
+\fIsucceeded\fR\.
+.SH "SEE ALSO"
+.PP
+
+\fBnologin\fR(5),
+\fBpam.conf\fR(5),
+\fBpam.d\fR(8),
+\fBpam\fR(8)
+.SH "AUTHOR"
+.PP
+pam_nologin was written by Michael K\. Johnson <johnsonm@redhat\.com>\.