man/logind.conf.xml

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   9   Copyright 2010 Lennart Poettering
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  24
  25 <refentry id="logind.conf" conditional='ENABLE_LOGIND'
  26     xmlns:xi="http://www.w3.org/2001/XInclude">
  27   <refentryinfo>
  28     <title>logind.conf</title>
  29     <productname>systemd</productname>
  30
  31     <authorgroup>
  32       <author>
  33         <contrib>Developer</contrib>
  34         <firstname>Lennart</firstname>
  35         <surname>Poettering</surname>
  36         <email>lennart@poettering.net</email>
  37       </author>
  38     </authorgroup>
  39   </refentryinfo>
  40
  41   <refmeta>
  42     <refentrytitle>logind.conf</refentrytitle>
  43     <manvolnum>5</manvolnum>
  44   </refmeta>
  45
  46   <refnamediv>
  47     <refname>logind.conf</refname>
  48     <refname>logind.conf.d</refname>
  49     <refpurpose>Login manager configuration files</refpurpose>
  50   </refnamediv>
  51
  52   <refsynopsisdiv>
  53     <para><filename>/etc/systemd/logind.conf</filename></para>
  54     <para><filename>/etc/systemd/logind.conf.d/*.conf</filename></para>
  55     <para><filename>/run/systemd/logind.conf.d/*.conf</filename></para>
  56     <para><filename>/usr/lib/systemd/logind.conf.d/*.conf</filename></para>
  57   </refsynopsisdiv>
  58
  59   <refsect1>
  60     <title>Description</title>
  61
  62     <para>These files configure various parameters of the systemd login manager, <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
  63   </refsect1>
  64
  65   <xi:include href="standard-conf.xml" xpointer="confd" />
  66   <xi:include href="standard-conf.xml" xpointer="conf" />
  67
  68   <refsect1>
  69     <title>Options</title>
  70
  71     <para>All options are configured in the
  72     <literal>[Login]</literal> section:</para>
  73
  74     <variablelist>
  75
  76       <varlistentry>
  77         <term><varname>NAutoVTs=</varname></term>
  78
  79         <listitem><para>Takes a positive integer. Configures how many
  80         virtual terminals (VTs) to allocate by default that, when
  81         switched to and are previously unused,
  82         <literal>autovt</literal> services are automatically spawned
  83         on. These services are instantiated from the template unit
  84         <filename>autovt@.service</filename> for the respective VT TTY
  85         name, for example, <filename>autovt@tty4.service</filename>.
  86         By default, <filename>autovt@.service</filename> is linked to
  87         <filename>getty@.service</filename>. In other words, login
  88         prompts are started dynamically as the user switches to unused
  89         virtual terminals. Hence, this parameter controls how many
  90         login <literal>gettys</literal> are available on the VTs. If a
  91         VT is already used by some other subsystem (for example, a
  92         graphical login), this kind of activation will not be
  93         attempted. Note that the VT configured in
  94         <varname>ReserveVT=</varname> is always subject to this kind
  95         of activation, even if it is not one of the VTs configured
  96         with the <varname>NAutoVTs=</varname> directive. Defaults to
  97         6. When set to 0, automatic spawning of
  98         <literal>autovt</literal> services is
  99         disabled.</para></listitem>
 100       </varlistentry>
 101
 102       <varlistentry>
 103         <term><varname>ReserveVT=</varname></term>
 104
 105         <listitem><para>Takes a positive integer. Identifies one
 106         virtual terminal that shall unconditionally be reserved for
 107         <filename>autovt@.service</filename> activation (see above).
 108         The VT selected with this option will be marked busy
 109         unconditionally, so that no other subsystem will allocate it.
 110         This functionality is useful to ensure that, regardless of how
 111         many VTs are allocated by other subsystems, one login
 112         <literal>getty</literal> is always available. Defaults to 6
 113         (in other words, there will always be a
 114         <literal>getty</literal> available on Alt-F6.). When set to 0,
 115         VT reservation is disabled.</para></listitem>
 116       </varlistentry>
 117
 118       <varlistentry>
 119         <term><varname>KillUserProcesses=</varname></term>
 120
 121         <listitem><para>Takes a boolean argument. Configures whether
 122         the processes of a user should be killed when the user
 123         completely logs out (i.e. after the user's last session
 124         ended). Defaults to <literal>no</literal>.</para>
 125
 126         <para>Note that setting <varname>KillUserProcesses=1</varname>
 127         will break tools like
 128         <citerefentry><refentrytitle>screen</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para></listitem>
 129       </varlistentry>
 130
 131       <varlistentry>
 132         <term><varname>KillOnlyUsers=</varname></term>
 133         <term><varname>KillExcludeUsers=</varname></term>
 134
 135         <listitem><para>These settings take space-separated lists of
 136         usernames that influence the effect of
 137         <varname>KillUserProcesses=</varname>. If not empty, only
 138         processes of users listed in <varname>KillOnlyUsers=</varname>
 139         will be killed when they log out entirely. Processes of users
 140         listed in <varname>KillExcludeUsers=</varname> are excluded
 141         from being killed. <varname>KillExcludeUsers=</varname>
 142         defaults to <literal>root</literal> and takes precedence over
 143         <varname>KillOnlyUsers=</varname>, which defaults to the empty
 144         list.</para></listitem>
 145       </varlistentry>
 146
 147       <varlistentry>
 148         <term><varname>IdleAction=</varname></term>
 149
 150         <listitem><para>Configures the action to take when the system
 151         is idle. Takes one of
 152         <literal>ignore</literal>,
 153         <literal>poweroff</literal>,
 154         <literal>reboot</literal>,
 155         <literal>halt</literal>,
 156         <literal>kexec</literal>,
 157         <literal>suspend</literal>,
 158         <literal>hibernate</literal>,
 159         <literal>hybrid-sleep</literal>, and
 160         <literal>lock</literal>.
 161         Defaults to <literal>ignore</literal>.</para>
 162
 163         <para>Note that this requires that user sessions correctly
 164         report the idle status to the system. The system will execute
 165         the action after all sessions report that they are idle, no
 166         idle inhibitor lock is active, and subsequently, the time
 167         configured with <varname>IdleActionSec=</varname> (see below)
 168         has expired.</para>
 169         </listitem>
 170       </varlistentry>
 171
 172       <varlistentry>
 173         <term><varname>IdleActionSec=</varname></term>
 174
 175         <listitem><para>Configures the delay after which the action
 176         configured in <varname>IdleAction=</varname> (see above) is
 177         taken after the system is idle.</para></listitem>
 178       </varlistentry>
 179
 180       <varlistentry>
 181         <term><varname>InhibitDelayMaxSec=</varname></term>
 182
 183         <listitem><para>Specifies the maximum time a system shutdown
 184         or sleep request is delayed due to an inhibitor lock of type
 185         <literal>delay</literal> being active before the inhibitor is
 186         ignored and the operation executes anyway. Defaults to
 187         5.</para></listitem>
 188       </varlistentry>
 189
 190       <varlistentry>
 191         <term><varname>HandlePowerKey=</varname></term>
 192         <term><varname>HandleSuspendKey=</varname></term>
 193         <term><varname>HandleHibernateKey=</varname></term>
 194         <term><varname>HandleLidSwitch=</varname></term>
 195         <term><varname>HandleLidSwitchDocked=</varname></term>
 196
 197         <listitem><para>Controls whether logind shall handle the
 198         system power and sleep keys and the lid switch to trigger
 199         actions such as system power-off or suspend. Can be one of
 200         <literal>ignore</literal>,
 201         <literal>poweroff</literal>,
 202         <literal>reboot</literal>,
 203         <literal>halt</literal>,
 204         <literal>kexec</literal>,
 205         <literal>suspend</literal>,
 206         <literal>hibernate</literal>,
 207         <literal>hybrid-sleep</literal>, and
 208         <literal>lock</literal>.
 209         If <literal>ignore</literal>, logind will never handle these
 210         keys. If <literal>lock</literal>, all running sessions will be
 211         screen-locked; otherwise, the specified action will be taken
 212         in the respective event. Only input devices with the
 213         <literal>power-switch</literal> udev tag will be watched for
 214         key/lid switch events. <varname>HandlePowerKey=</varname>
 215         defaults to <literal>poweroff</literal>.
 216         <varname>HandleSuspendKey=</varname> and
 217         <varname>HandleLidSwitch=</varname> default to
 218         <literal>suspend</literal>.
 219         <varname>HandleLidSwitchDocked=</varname> defaults to
 220         <literal>ignore</literal>.
 221         <varname>HandleHibernateKey=</varname> defaults to
 222         <literal>hibernate</literal>. If the system is inserted in a
 223         docking station, or if more than one display is connected, the
 224         action specified by <varname>HandleLidSwitchDocked=</varname>
 225         occurs; otherwise the <varname>HandleLidSwitch=</varname>
 226         action occurs.</para></listitem>
 227       </varlistentry>
 228
 229       <varlistentry>
 230         <term><varname>PowerKeyIgnoreInhibited=</varname></term>
 231         <term><varname>SuspendKeyIgnoreInhibited=</varname></term>
 232         <term><varname>HibernateKeyIgnoreInhibited=</varname></term>
 233         <term><varname>LidSwitchIgnoreInhibited=</varname></term>
 234
 235         <listitem><para>Controls whether actions triggered by the
 236         power and sleep keys and the lid switch are subject to
 237         inhibitor locks. These settings take boolean arguments. If
 238         <literal>no</literal>, the inhibitor locks taken by
 239         applications in order to block the requested operation are
 240         respected. If <literal>yes</literal>, the requested operation
 241         is executed in any case.
 242         <varname>PowerKeyIgnoreInhibited=</varname>,
 243         <varname>SuspendKeyIgnoreInhibited=</varname> and
 244         <varname>HibernateKeyIgnoreInhibited=</varname> default to
 245         <literal>no</literal>.
 246         <varname>LidSwitchIgnoreInhibited=</varname> defaults to
 247         <literal>yes</literal>. This means that the lid switch does
 248         not respect suspend blockers by default, but the power and
 249         sleep keys do. </para></listitem>
 250       </varlistentry>
 251
 252       <varlistentry>
 253         <term><varname>RuntimeDirectorySize=</varname></term>
 254
 255         <listitem><para>Sets the size limit on the
 256         <varname>$XDG_RUNTIME_DIR</varname> runtime directory for each
 257         user who logs in. Takes a size in bytes, optionally suffixed
 258         with the usual K, G, M, and T suffixes, to the base 1024
 259         (IEC). Alternatively, a numerical percentage suffixed by
 260         <literal>%</literal> may be specified, which sets the size
 261         limit relative to the amount of physical RAM. Defaults to 10%.
 262         Note that this size is a safety limit only. As each runtime
 263         directory is a tmpfs file system, it will only consume as much
 264         memory as is needed. </para></listitem>
 265       </varlistentry>
 266
 267       <varlistentry>
 268         <term><varname>RemoveIPC=</varname></term>
 269
 270         <listitem><para>Controls whether System V and POSIX IPC
 271         objects belonging to the user shall be removed when the user
 272         fully logs out. Takes a boolean argument. If enabled, the user
 273         may not consume IPC resources after the last of the user's
 274         sessions terminated. This covers System V semaphores, shared
 275         memory and message queues, as well as POSIX shared memory and
 276         message queues. Note that IPC objects of the root user are
 277         excluded from the effect of this setting. Defaults to
 278         <literal>yes</literal>.</para></listitem>
 279       </varlistentry>
 280
 281     </variablelist>
 282   </refsect1>
 283
 284   <refsect1>
 285       <title>See Also</title>
 286       <para>
 287         <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 288         <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 289         <citerefentry><refentrytitle>loginctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 290         <citerefentry><refentrytitle>systemd-system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
 291       </para>
 292   </refsect1>
 293
 294 </refentry>