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systemd/man/systemd-logind.service.xml
Zbigniew Jędrzejewski-Szmek d35f51ea84 tree-wide: use "polkit" to refer to PolicyKit/polkit
Back in 2012 the project was renamed, see the release notes for v 0.105
[https://cgit.freedesktop.org/polkit/tree/NEWS#n754]. Let's update our
documentation and comments to do the same. Referring to PolicyKit is confusing
to users because at the time the polkit api changed too, and we support the new
version. I updated NEWS too, since all the references to PolicyKit there were
added after the rename.

"PolicyKit" is unchanged in various URLs and method call names.
2018-07-16 12:44:24 +02:00

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XML

<?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">
<!--
SPDX-License-Identifier: LGPL-2.1+
-->
<refentry id="systemd-logind.service" conditional='ENABLE_LOGIND'>
<refentryinfo>
<title>systemd-logind.service</title>
<productname>systemd</productname>
</refentryinfo>
<refmeta>
<refentrytitle>systemd-logind.service</refentrytitle>
<manvolnum>8</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd-logind.service</refname>
<refname>systemd-logind</refname>
<refpurpose>Login manager</refpurpose>
</refnamediv>
<refsynopsisdiv>
<para><filename>systemd-logind.service</filename></para>
<para><filename>/usr/lib/systemd/systemd-logind</filename></para>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><command>systemd-logind</command> is a system service that
manages user logins. It is responsible for:</para>
<itemizedlist>
<listitem><para>Keeping track of users and sessions, their processes and their idle state. This is implemented by
allocating a systemd slice unit for each user below <filename>user.slice</filename>, and a scope unit below it
for each concurrent session of a user. Also, a per-user service manager is started as system service instance of
<filename>user@.service</filename> for each logged in user.</para></listitem>
<listitem><para>Generating and managing session IDs. If auditing is available and an audit session ID is already set for
a session, then this ID is reused as the session ID. Otherwise, an independent session counter is
used.</para></listitem>
<listitem><para>Providing <ulink
url="http://www.freedesktop.org/wiki/Software/polkit">polkit</ulink>-based
access for users for operations such as system shutdown or sleep</para>
</listitem>
<listitem><para>Implementing a shutdown/sleep inhibition logic
for applications</para></listitem>
<listitem><para>Handling of power/sleep hardware
keys</para></listitem>
<listitem><para>Multi-seat management</para></listitem>
<listitem><para>Session switch management</para></listitem>
<listitem><para>Device access management for
users</para></listitem>
<listitem><para>Automatic spawning of text logins (gettys) on
virtual console activation and user runtime directory
management</para></listitem>
</itemizedlist>
<para>User sessions are registered with logind via the
<citerefentry><refentrytitle>pam_systemd</refentrytitle><manvolnum>8</manvolnum></citerefentry>
PAM module.</para>
<para>See
<citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for information about the configuration of this service.</para>
<para>See
<citerefentry><refentrytitle>sd-login</refentrytitle><manvolnum>3</manvolnum></citerefentry>
for information about the basic concepts of logind
such as users, sessions and seats.</para>
<para>See the <ulink
url="https://www.freedesktop.org/wiki/Software/systemd/logind">
logind D-Bus API Documentation</ulink> for information about the
APIs <filename>systemd-logind</filename> provides.</para>
<para>For more information on the inhibition logic see the <ulink
url="https://www.freedesktop.org/wiki/Software/systemd/inhibit">Inhibitor
Lock Developer Documentation</ulink>.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-user-sessions.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>loginctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>pam_systemd</refentrytitle><manvolnum>8</manvolnum></citerefentry>
<citerefentry><refentrytitle>sd-login</refentrytitle><manvolnum>3</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>