.\"     Title: pam_env
.\"    Author: [see the "AUTHOR" section]
.\" Generator: DocBook XSL Stylesheets v1.74.0 <http://docbook.sf.net/>
.\"      Date: 10/27/2010
.\"    Manual: Linux-PAM Manual
.\"    Source: Linux-PAM Manual
.\"  Language: English
.\"
.TH "PAM_ENV" "8" "10/27/2010" "Linux-PAM Manual" "Linux-PAM Manual"
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.\" * MAIN CONTENT STARTS HERE *
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.SH "Name"
pam_env \- PAM module to set/unset environment variables
.SH "Synopsis"
.fam C
.HP \w'\fBpam_env\&.so\fR\ 'u
\fBpam_env\&.so\fR [debug] [conffile=\fIconf\-file\fR] [envfile=\fIenv\-file\fR] [readenv=\fI0|1\fR] [user_envfile=\fIenv\-file\fR] [user_readenv=\fI0|1\fR]
.fam
.SH "DESCRIPTION"
.PP
The pam_env PAM module allows the (un)setting of environment variables\&. Supported is the use of previously set environment variables as well as
\fIPAM_ITEM\fRs such as
\fIPAM_RHOST\fR\&.
.PP
By default rules for (un)setting of variables is taken from the config file
\FC/etc/security/pam_env\&.conf\F[]
if no other file is specified\&.
.PP
This module can also parse a file with simple
\fIKEY=VAL\fR
pairs on separate lines (\FC/etc/environment\F[]
by default)\&. You can change the default file to parse, with the
\fIenvfile\fR
flag and turn it on or off by setting the
\fIreadenv\fR
flag to 1 or 0 respectively\&.
.PP
Since setting of PAM environment variables can have side effects to other modules, this module should be the last one on the stack\&.
.SH "OPTIONS"
.PP
\fBconffile=\fR\fB\fI/path/to/pam_env\&.conf\fR\fR
.RS 4
Indicate an alternative
\FCpam_env\&.conf\F[]
style configuration file to override the default\&. This can be useful when different services need different environments\&.
.RE
.PP
\fBdebug\fR
.RS 4
A lot of debug information is printed with
\fBsyslog\fR(3)\&.
.RE
.PP
\fBenvfile=\fR\fB\fI/path/to/environment\fR\fR
.RS 4
Indicate an alternative
\FCenvironment\F[]
file to override the default\&. This can be useful when different services need different environments\&.
.RE
.PP
\fBreadenv=\fR\fB\fI0|1\fR\fR
.RS 4
Turns on or off the reading of the file specified by envfile (0 is off, 1 is on)\&. By default this option is on\&.
.RE
.PP
\fBuser_envfile=\fR\fB\fIfilename\fR\fR
.RS 4
Indicate an alternative
\FC\&.pam_environment\F[]
file to override the default\&. This can be useful when different services need different environments\&. The filename is relative to the user home directory\&.
.RE
.PP
\fBuser_readenv=\fR\fB\fI0|1\fR\fR
.RS 4
Turns on or off the reading of the user specific environment file\&. 0 is off, 1 is on\&. By default this option is on\&.
.RE
.SH "MODULE TYPES PROVIDED"
.PP
The
\fBauth\fR
and
\fBsession\fR
module types are provided\&.
.SH "RETURN VALUES"
.PP
PAM_ABORT
.RS 4
Not all relevant data or options could be gotten\&.
.RE
.PP
PAM_BUF_ERR
.RS 4
Memory buffer error\&.
.RE
.PP
PAM_IGNORE
.RS 4
No pam_env\&.conf and environment file was found\&.
.RE
.PP
PAM_SUCCESS
.RS 4
Environment variables were set\&.
.RE
.SH "FILES"
.PP
\FC/etc/security/pam_env\&.conf\F[]
.RS 4
Default configuration file
.RE
.PP
\FC/etc/environment\F[]
.RS 4
Default environment file
.RE
.PP
\FC$HOME/\&.pam_environment\F[]
.RS 4
User specific environment file
.RE
.SH "SEE ALSO"
.PP

\fBpam_env.conf\fR(5),
\fBpam.d\fR(5),
\fBpam\fR(8)\&.
.SH "AUTHOR"
.PP
pam_env was written by Dave Kinchlea <kinch@kinch\&.ark\&.com>\&.