.\" Title: pam_shells
.\" Author: [see the "AUTHOR" section]
.\" Generator: DocBook XSL Stylesheets v1.74.0
.\" Date: 07/08/2010
.\" Manual: Linux-PAM Manual
.\" Source: Linux-PAM Manual
.\" Language: English
.\"
.TH "PAM_SHELLS" "8" "07/08/2010" "Linux-PAM Manual" "Linux\-PAM Manual"
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.\" * MAIN CONTENT STARTS HERE *
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.SH "Name"
pam_shells \- PAM module to check for valid login shell
.SH "Synopsis"
.fam C
.HP \w'\fBpam_shells\&.so\fR\ 'u
\fBpam_shells\&.so\fR
.fam
.SH "DESCRIPTION"
.PP
pam_shells is a PAM module that only allows access to the system if the users shell is listed in
\FC/etc/shells\F[]\&.
.PP
It also checks if
\FC/etc/shells\F[]
is a plain file and not world writable\&.
.SH "OPTIONS"
.PP
This module does not recognise any options\&.
.SH "MODULE TYPES PROVIDED"
.PP
The
\fBauth\fR
and
\fBaccount\fR
module types are provided\&.
.SH "RETURN VALUES"
.PP
PAM_AUTH_ERR
.RS 4
Access to the system was denied\&.
.RE
.PP
PAM_SUCCESS
.RS 4
The users login shell was listed as valid shell in
\FC/etc/shells\F[]\&.
.RE
.PP
PAM_SERVICE_ERR
.RS 4
The module was not able to get the name of the user\&.
.RE
.SH "EXAMPLES"
.PP
.sp
.if n \{\
.RS 4
.\}
.fam C
.ps -1
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auth required pam_shells\&.so
.EB lightgray adjust-for-leading-newline
.if t \{\
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.fi
.fam
.ps +1
.if n \{\
.RE
.\}
.sp
.SH "SEE ALSO"
.PP
\fBshells\fR(5),
\fBpam.conf\fR(5),
\fBpam.d\fR(5),
\fBpam\fR(8)
.SH "AUTHOR"
.PP
pam_shells was written by Erik Troan \&.