systemd/man/logind.conf.xml

<?xml version='1.0'?> <!--*-nxml-*-->
<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
<!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="logind.conf" conditional='ENABLE_LOGIND'>
        <refentryinfo>
                <title>logind.conf</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>logind.conf</refentrytitle>
                <manvolnum>5</manvolnum>
        </refmeta>

        <refnamediv>
                <refname>logind.conf</refname>
                <refpurpose>Login manager configuration file</refpurpose>
        </refnamediv>

        <refsynopsisdiv>
                <para><filename>/etc/systemd/logind.conf</filename></para>
        </refsynopsisdiv>

        <refsect1>
                <title>Description</title>

                <para>This file configures various parameters of the systemd login manager, <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>

        </refsect1>

        <refsect1>
                <title>Options</title>

                <para>All options are configured in the
                <literal>[Login]</literal> section:</para>

                <variablelist>

                        <varlistentry>
                                <term><varname>NAutoVTs=</varname></term>

                                <listitem><para>Takes a positive
                                integer. Configures how many virtual
                                terminals (VTs) to allocate by default
                                that, when switched to and are
                                previously unused,
                                <literal>autovt</literal> services are
                                automatically spawned on. These
                                services are instantiated from the
                                template unit
                                <filename>autovt@.service</filename>
                                for the respective VT TTY name,
                                for example, <filename>autovt@tty4.service</filename>. By
                                default,
                                <filename>autovt@.service</filename>
                                is linked to
                                <filename>getty@.service</filename>.
                                In other words, login prompts are started
                                dynamically as the user switches to
                                unused virtual terminals. Hence, this
                                parameter controls how many login
                                <literal>gettys</literal> are
                                available on the VTs. If a VT is
                                already used by some other subsystem
                                (for example, a graphical login), this
                                kind of activation will not be
                                attempted. Note that the VT configured
                                in <varname>ReserveVT=</varname> is
                                always subject to this kind of
                                activation, even if it is not one of
                                the VTs configured with the
                                <varname>NAutoVTs=</varname>
                                directive. Defaults to 6. When set to
                                0, automatic spawning of
                                <literal>autovt</literal> services is
                                disabled.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>ReserveVT=</varname></term>

                                <listitem><para>Takes a positive
                                integer. Identifies one
                                virtual terminal that shall
                                unconditionally be reserved for
                                <filename>autovt@.service</filename>
                                activation (see above). The VT
                                selected with this option will be
                                marked busy unconditionally, so that no
                                other subsystem will allocate it. This
                                functionality is useful to ensure that,
                                regardless of how many VTs are allocated
                                by other subsystems, one login
                                <literal>getty</literal> is always
                                available. Defaults to 6 (in other
                                words, there will always be a
                                <literal>getty</literal> available on
                                Alt-F6.). When set to 0, VT
                                reservation is
                                disabled.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>KillUserProcesses=</varname></term>

                                <listitem><para>Takes a boolean
                                argument. Configures whether the
                                processes of a user should be killed
                                when the user completely logs out (i.e. after
                                the user's last session ended). Defaults to
                                <literal>no</literal>.</para>

                                <para>Note that setting
                                <varname>KillUserProcesses=1</varname>
                                will break tools like
                                <citerefentry><refentrytitle>screen</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>KillOnlyUsers=</varname></term>
                                <term><varname>KillExcludeUsers=</varname></term>

                                <listitem><para>These settings take
                                space-separated lists of usernames
                                that influence the effect of
                                <varname>KillUserProcesses=</varname>. If
                                not empty, only processes of users
                                listed in
                                <varname>KillOnlyUsers=</varname> will
                                be killed when they log out
                                entirely. Processes of users listed in
                                <varname>KillExcludeUsers=</varname>
                                are excluded from being
                                killed. <varname>KillExcludeUsers=</varname>
                                defaults to <literal>root</literal>
                                and takes precedence over
                                <varname>KillOnlyUsers=</varname>,
                                which defaults to the empty list.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>IdleAction=</varname></term>

                                <listitem><para>Configures the action
                                to take when the system is idle. Takes
                                one of <literal>ignore</literal>,
                                <literal>poweroff</literal>,
                                <literal>reboot</literal>,
                                <literal>halt</literal>,
                                <literal>kexec</literal>,
                                <literal>suspend</literal>,
                                <literal>hibernate</literal>,
                                <literal>hybrid-sleep</literal>, and
                                <literal>lock</literal>. Defaults to
                                <literal>ignore</literal>.</para>

                                <para>Note that this requires that
                                user sessions correctly report the
                                idle status to the system. The system
                                will execute the action after all
                                sessions report that they are idle,
                                no idle inhibitor lock is active,
                                and subsequently, the time configured
                                with <varname>IdleActionSec=</varname>
                                (see below) has expired.</para>
                                </listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>IdleActionSec=</varname></term>

                                <listitem><para>Configures the delay
                                after which the action configured in
                                <varname>IdleAction=</varname> (see
                                above) is taken after the system is
                                idle.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>InhibitDelayMaxSec=</varname></term>

                                <listitem><para>Specifies the maximum
                                time a system shutdown or sleep
                                request is delayed due to an inhibitor
                                lock of type <literal>delay</literal>
                                being active before the inhibitor is
                                ignored and the operation executes
                                anyway. Defaults to
                                5.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>HandlePowerKey=</varname></term>
                                <term><varname>HandleSuspendKey=</varname></term>
                                <term><varname>HandleHibernateKey=</varname></term>
                                <term><varname>HandleLidSwitch=</varname></term>
                                <term><varname>HandleLidSwitchDocked=</varname></term>

                                <listitem><para>Controls whether
                                logind shall handle the system power
                                and sleep keys and the lid switch to
                                trigger actions such as system
                                power-off or suspend. Can be one of
                                <literal>ignore</literal>,
                                <literal>poweroff</literal>,
                                <literal>reboot</literal>,
                                <literal>halt</literal>,
                                <literal>kexec</literal>,
                                <literal>suspend</literal>,
                                <literal>hibernate</literal>,
                                <literal>hybrid-sleep</literal>, and
                                <literal>lock</literal>. If
                                <literal>ignore</literal>, logind will
                                never handle these keys. If
                                <literal>lock</literal>, all running
                                sessions will be screen-locked;
                                otherwise, the specified action will
                                be taken in the respective event. Only
                                input devices with the
                                <literal>power-switch</literal> udev
                                tag will be watched for key/lid switch
                                events. <varname>HandlePowerKey=</varname>
                                defaults to
                                <literal>poweroff</literal>.
                                <varname>HandleSuspendKey=</varname>
                                and
                                <varname>HandleLidSwitch=</varname>
                                default to <literal>suspend</literal>.
                                <varname>HandleLidSwitchDocked=</varname>
                                defaults to <literal>ignore</literal>.
                                <varname>HandleHibernateKey=</varname>
                                defaults to
                                <literal>hibernate</literal>. If the
                                system is inserted in a docking station,
                                or if more than one display is connected,
                                the action specified by
                                <varname>HandleLidSwitchDocked=</varname>
                                occurs; otherwise the
                                <varname>HandleLidSwitch=</varname>
                                action occurs.</para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>PowerKeyIgnoreInhibited=</varname></term>
                                <term><varname>SuspendKeyIgnoreInhibited=</varname></term>
                                <term><varname>HibernateKeyIgnoreInhibited=</varname></term>
                                <term><varname>LidSwitchIgnoreInhibited=</varname></term>

                                <listitem><para>Controls whether
                                actions triggered by the power and
                                sleep keys and the lid switch are
                                subject to inhibitor locks. These
                                settings take boolean arguments. If
                                <literal>off</literal>, the inhibitor
                                locks taken by applications in order
                                to block the requested operation are
                                respected. If <literal>on</literal>,
                                the requested operation is executed in
                                any
                                case. <varname>PowerKeyIgnoreInhibited=</varname>,
                                <varname>SuspendKeyIgnoreInhibited=</varname>
                                and
                                <varname>HibernateKeyIgnoreInhibited=</varname>
                                default to <literal>off</literal>.
                                <varname>LidSwitchIgnoreInhibited=</varname>
                                defaults to
                                <literal>yes</literal>. This means
                                that the lid switch does not respect
                                suspend blockers by default, but the
                                power and sleep keys do.
                                </para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>RuntimeDirectorySize=</varname></term>

                                <listitem><para>Sets the size limit on
                                the
                                <varname>$XDG_RUNTIME_DIR</varname>
                                runtime directory for each user who
                                logs in. Takes a size in bytes,
                                optionally suffixed with the usual K, G,
                                M, and T suffixes, to the base 1024
                                (IEC). Alternatively, a numerical
                                percentage suffixed by <literal>%</literal>
                                may be specified, which sets the size
                                limit relative to the amount of
                                physical RAM. Defaults to 10%. Note
                                that this size is a safety limit
                                only. As each runtime directory is a
                                tmpfs file system, it will only consume
                                as much memory as is needed.
                                </para></listitem>
                        </varlistentry>

                        <varlistentry>
                                <term><varname>RemoveIPC=</varname></term>

                                <listitem><para>Controls whether
                                System V and POSIX IPC objects
                                belonging to the user shall be removed
                                when the user fully logs out. Takes a
                                boolean argument. If enabled, the user
                                may not consume IPC resources after
                                the last of his sessions
                                terminated. This covers System V
                                semaphores, shared memory and message
                                queues, as well as POSIX shared memory
                                and message queues. Note that IPC
                                objects of the root user are excluded
                                from the effect of this
                                setting. Defaults to
                                <literal>yes</literal>.</para></listitem>
                        </varlistentry>

                </variablelist>
        </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>loginctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
                          <citerefentry><refentrytitle>systemd-system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
                  </para>
        </refsect1>

</refentry>