+++ /dev/null
-<?xml version='1.0'?> <!--*-nxml-*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
- "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
--->
-
-<refentry id="pam_systemd" conditional='HAVE_PAM'>
-
- <refentryinfo>
- <title>pam_systemd</title>
- <productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Lennart</firstname>
- <surname>Poettering</surname>
- <email>lennart@poettering.net</email>
- </author>
- </authorgroup>
- </refentryinfo>
-
- <refmeta>
- <refentrytitle>pam_systemd</refentrytitle>
- <manvolnum>8</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>pam_systemd</refname>
- <refpurpose>Register user sessions in the systemd login manager</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <para><filename>pam_systemd.so</filename></para>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para><command>pam_systemd</command> registers user sessions with
- the systemd login manager
- <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
- and hence the systemd control group hierarchy.</para>
-
- <para>On login, this module ensures the following:</para>
-
- <orderedlist>
- <listitem><para>If it does not exist yet, the user runtime
- directory <filename>/run/user/$USER</filename> is created and
- its ownership changed to the user that is logging
- in.</para></listitem>
-
- <listitem><para>The <varname>$XDG_SESSION_ID</varname>
- environment variable is initialized. If auditing is available
- and <command>pam_loginuid.so</command> was run before this
- module (which is highly recommended), the variable is
- initialized from the auditing session id
- (<filename>/proc/self/sessionid</filename>). Otherwise, an
- independent session counter is used.</para></listitem>
-
- <listitem><para>A new systemd scope unit is created for the
- session. If this is the first concurrent session of the user, an
- implicit slice below <filename>user.slice</filename> is
- automatically created and the scope placed into it. An instance
- of the system service <filename>user@.service</filename>, which
- runs the systemd user manager instance, is started.
- </para></listitem>
- </orderedlist>
-
- <para>On logout, this module ensures the following:</para>
-
- <orderedlist>
- <listitem><para>If enabled in
- <citerefentry><refentrytitle>logind.conf</refentrytitle>
- <manvolnum>5</manvolnum></citerefentry>, all processes of the
- session are terminated. If the last concurrent session of a user
- ends, the user's systemd instance will be terminated too, and so
- will the user's slice unit.</para></listitem>
-
- <listitem><para>If the last concurrent session of a user ends,
- the <varname>$XDG_RUNTIME_DIR</varname> directory and all its
- contents are removed, too.</para></listitem>
- </orderedlist>
-
- <para>If the system was not booted up with systemd as init system,
- this module does nothing and immediately returns
- <constant>PAM_SUCCESS</constant>.</para>
-
- </refsect1>
-
- <refsect1>
- <title>Options</title>
-
- <para>The following options are understood:</para>
-
- <variablelist class='pam-directives'>
-
- <varlistentry>
- <term><option>class=</option></term>
-
- <listitem><para>Takes a string argument which sets the session
- class. The XDG_SESSION_CLASS environmental variable takes
- precedence. One of
- <literal>user</literal>,
- <literal>greeter</literal>,
- <literal>lock-screen</literal> or
- <literal>background</literal>. See
- <citerefentry><refentrytitle>sd_session_get_class</refentrytitle><manvolnum>3</manvolnum></citerefentry>
- for details about the session class.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>type=</option></term>
-
- <listitem><para>Takes a string argument which sets the session
- type. The XDG_SESSION_TYPE environmental variable takes
- precedence. One of
- <literal>unspecified</literal>,
- <literal>tty</literal>,
- <literal>x11</literal>,
- <literal>wayland</literal> or
- <literal>mir</literal>. See
- <citerefentry><refentrytitle>sd_session_get_type</refentrytitle><manvolnum>3</manvolnum></citerefentry>
- for details about the session type.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>debug<optional>=</optional></option></term>
-
- <listitem><para>Takes an optional
- boolean argument. If yes or without
- the argument, the module will log
- debugging information as it
- operates.</para></listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Module Types Provided</title>
-
- <para>Only <option>session</option> is provided.</para>
- </refsect1>
-
- <refsect1>
- <title>Environment</title>
-
- <para>The following environment variables are set for the
- processes of the user's session:</para>
-
- <variablelist class='environment-variables'>
- <varlistentry>
- <term><varname>$XDG_SESSION_ID</varname></term>
-
- <listitem><para>A session identifier, suitable to be used in
- filenames. The string itself should be considered opaque,
- although often it is just the audit session ID as reported by
- <filename>/proc/self/sessionid</filename>. Each ID will be
- assigned only once during machine uptime. It may hence be used
- to uniquely label files or other resources of this
- session.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>$XDG_RUNTIME_DIR</varname></term>
-
- <listitem><para>Path to a user-private user-writable directory
- that is bound to the user login time on the machine. It is
- automatically created the first time a user logs in and
- removed on the user's final logout. If a user logs in twice at
- the same time, both sessions will see the same
- <varname>$XDG_RUNTIME_DIR</varname> and the same contents. If
- a user logs in once, then logs out again, and logs in again,
- the directory contents will have been lost in between, but
- applications should not rely on this behavior and must be able
- to deal with stale files. To store session-private data in
- this directory, the user should include the value of
- <varname>$XDG_SESSION_ID</varname> in the filename. This
- directory shall be used for runtime file system objects such
- as <constant>AF_UNIX</constant> sockets, FIFOs, PID files and
- similar. It is guaranteed that this directory is local and
- offers the greatest possible file system feature set the
- operating system provides. For further details see the <ulink
- url="http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html">XDG
- Base Directory Specification</ulink>.</para></listitem>
- </varlistentry>
-
- </variablelist>
-
- <para>The following environment variables are read by the module
- and may be used by the PAM service to pass metadata to the
- module:</para>
-
- <variablelist class='environment-variables'>
- <varlistentry>
- <term><varname>$XDG_SESSION_TYPE</varname></term>
-
- <listitem><para>The session type. This may be used instead of
- <option>session=</option> on the module parameter line, and is
- usually preferred.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>$XDG_SESSION_CLASS</varname></term>
-
- <listitem><para>The session class. This may be used instead of
- <option>class=</option> on the module parameter line, and is
- usually preferred.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>$XDG_SESSION_DESKTOP</varname></term>
-
- <listitem><para>A single, short identifier string for the
- desktop environment. This may be used to indicate the session
- desktop used, where this applies and if this information is
- available. For example: <literal>GNOME</literal>, or
- <literal>KDE</literal>. It is recommended to use the same
- identifiers and capitalization as for
- <varname>$XDG_CURRENT_DESKTOP</varname>, as defined by the
- <ulink
- url="http://standards.freedesktop.org/desktop-entry-spec/latest/">Desktop
- Entry Specification</ulink>. (However, note that
- <varname>$XDG_SESSION_DESKTOP</varname> only takes a single
- item, and not a colon-separated list like
- <varname>$XDG_CURRENT_DESKTOP</varname>.) See
- <citerefentry><refentrytitle>sd_session_get_desktop</refentrytitle><manvolnum>3</manvolnum></citerefentry>
- for more details.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>$XDG_SEAT</varname></term>
-
- <listitem><para>The seat name the session shall be registered
- for, if any.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>$XDG_VTNR</varname></term>
-
- <listitem><para>The VT number the session shall be registered
- for, if any. (Only applies to seats with a VT available, such
- as <literal>seat0</literal>)</para></listitem>
- </varlistentry>
-
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Example</title>
-
- <programlisting>#%PAM-1.0
-auth required pam_unix.so
-auth required pam_nologin.so
-account required pam_unix.so
-password required pam_unix.so
-session required pam_unix.so
-session required pam_loginuid.so
-session required pam_systemd.so</programlisting>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
- <para>
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>loginctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry project='man-pages'><refentrytitle>pam.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry project='man-pages'><refentrytitle>pam.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry project='man-pages'><refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
- <citerefentry project='man-pages'><refentrytitle>pam_loginuid</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.scope</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.slice</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>
- </para>
- </refsect1>
-
-</refentry>
~ianmdlvl / elogind.git / blobdiff