"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!--
+ SPDX-License-Identifier: LGPL-2.1+
+
This file is part of systemd.
Copyright 2010 Lennart Poettering
manages user logins. It is responsible for:</para>
<itemizedlist>
- <listitem><para>Keeping track of users and sessions, their
- processes and their idle state</para></listitem>
+ <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 PolicyKit-based access for users to
+ <listitem><para>Providing PolicyKit-based access for users for
operations such as system shutdown or sleep</para></listitem>
<listitem><para>Implementing a shutdown/sleep inhibition logic
for information about the configuration of this service.</para>
<para>See <ulink
- url="http://www.freedesktop.org/wiki/Software/systemd/multiseat">Multi-Seat
+ url="https://www.freedesktop.org/wiki/Software/systemd/multiseat">Multi-Seat
on Linux</ulink> for an introduction into basic concepts of logind
such as users, sessions and seats.</para>
<para>See the <ulink
- url="http://www.freedesktop.org/wiki/Software/systemd/logind">
+ 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="http://www.freedesktop.org/wiki/Software/systemd/inhibit">Inhibitor
+ url="https://www.freedesktop.org/wiki/Software/systemd/inhibit">Inhibitor
Lock Developer Documentation</ulink>.</para>
</refsect1>