<?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 2012 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="systemd-user-sessions.service">
-
- <refentryinfo>
- <title>systemd-user-sessions.service</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>systemd-user-sessions.service</refentrytitle>
- <manvolnum>8</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>systemd-user-sessions.service</refname>
- <refname>systemd-user-sessions</refname>
- <refpurpose>Permit user logins after boot, prohibit user logins at shutdown</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <para><filename>systemd-user-sessions.service</filename></para>
- <para><filename>/usr/lib/systemd/systemd-user-sessions</filename></para>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para><filename>systemd-user-sessions.service</filename>
- is a service that controls user logins. After basic
- system initialization is complete it removes
- <filename>/run/nologin</filename>, thus permitting
- logins. Before system shutdown it creates
- <filename>/run/nologin</filename>, thus prohibiting
- further logins. At the same time it also kills all
- user processes, so that system shutdown may proceed
- without any remaining user processes around.</para>
- </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>pam_nologin</refentrytitle><manvolnum>8</manvolnum></citerefentry>
- </para>
- </refsect1>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<!-- SPDX-License-Identifier: LGPL-2.1+ -->
+<refentry id="systemd-user-sessions.service" conditional='HAVE_PAM'>
+
+ <refentryinfo>
+ <title>systemd-user-sessions.service</title>
+ <productname>systemd</productname>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>systemd-user-sessions.service</refentrytitle>
+ <manvolnum>8</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>systemd-user-sessions.service</refname>
+ <refname>systemd-user-sessions</refname>
+ <refpurpose>Permit user logins after boot, prohibit user logins at shutdown</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <para><filename>systemd-user-sessions.service</filename></para>
+ <para><filename>/usr/lib/systemd/systemd-user-sessions</filename></para>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para><filename>systemd-user-sessions.service</filename> is a
+ service that controls user logins through
+ <citerefentry project='man-pages'><refentrytitle>pam_nologin</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
+ After basic system initialization is complete, it removes
+ <filename>/run/nologin</filename>, thus permitting logins. Before
+ system shutdown, it creates <filename>/run/nologin</filename>, thus
+ prohibiting further logins.</para>
+ </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 project='man-pages'><refentrytitle>pam_nologin</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ </para>
+ </refsect1>
</refentry>