1a0e562a5b
I'm not sure if the LogTarget property is sufficiently general to be made into a property that can be generally implemented. It is very closely tied to the internal systemd logic. The other two seem fine thoough.
112 lines
4.8 KiB
XML
112 lines
4.8 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!-- SPDX-License-Identifier: LGPL-2.1+ -->
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<refentry id="systemd-logind.service" conditional='ENABLE_LOGIND'>
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<refentryinfo>
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<title>systemd-logind.service</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-logind.service</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-logind.service</refname>
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<refname>systemd-logind</refname>
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<refpurpose>Login manager</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>systemd-logind.service</filename></para>
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<para><filename>/usr/lib/systemd/systemd-logind</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>systemd-logind</command> is a system service that
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manages user logins. It is responsible for:</para>
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<itemizedlist>
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<listitem><para>Keeping track of users and sessions, their processes and their idle state. This is implemented by
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allocating a systemd slice unit for each user below <filename>user.slice</filename>, and a scope unit below it
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for each concurrent session of a user. Also, a per-user service manager is started as system service instance of
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<filename>user@.service</filename> for each logged in user.</para></listitem>
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<listitem><para>Generating and managing session IDs. If auditing is available and an audit session ID is already set for
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a session, then this ID is reused as the session ID. Otherwise, an independent session counter is
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used.</para></listitem>
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<listitem><para>Providing <ulink
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url="http://www.freedesktop.org/wiki/Software/polkit">polkit</ulink>-based
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access for users for operations such as system shutdown or sleep</para>
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</listitem>
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<listitem><para>Implementing a shutdown/sleep inhibition logic
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for applications</para></listitem>
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<listitem><para>Handling of power/sleep hardware
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keys</para></listitem>
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<listitem><para>Multi-seat management</para></listitem>
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<listitem><para>Session switch management</para></listitem>
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<listitem><para>Device access management for
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users</para></listitem>
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<listitem><para>Automatic spawning of text logins (gettys) on
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virtual console activation and user runtime directory
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management</para></listitem>
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</itemizedlist>
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<para>User sessions are registered with logind via the
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<citerefentry><refentrytitle>pam_systemd</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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PAM module.</para>
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<para>See
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<citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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for information about the configuration of this service.</para>
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<para>See
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<citerefentry><refentrytitle>sd-login</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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for information about the basic concepts of logind
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such as users, sessions and seats.</para>
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<para>See
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<citerefentry><refentrytitle>org.freedesktop.login1</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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and
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<citerefentry><refentrytitle>org.freedesktop.LogControl1</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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for information about the D-Bus APIs <filename>systemd-logind</filename> provides.</para>
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<para>For more information on the inhibition logic see the <ulink
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url="https://www.freedesktop.org/wiki/Software/systemd/inhibit">Inhibitor
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Lock Developer Documentation</ulink>.</para>
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<para>If you are interested in writing a display manager that makes use of logind, please have look at
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<ulink url="https://www.freedesktop.org/wiki/Software/systemd/writing-display-managers">Writing Display
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Managers</ulink>.
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If you are interested in writing a desktop environment that makes use of logind, please have look at
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<ulink url="http://www.freedesktop.org/wiki/Software/systemd/writing-desktop-environments">Writing
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Desktop Environments</ulink>.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-user-sessions.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>loginctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>pam_systemd</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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<citerefentry><refentrytitle>sd-login</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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