man/logind.conf.xml

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   7   This file is part of systemd.
   8
   9   Copyright 2010 Lennart Poettering
  10
  11   systemd is free software; you can redistribute it and/or modify it
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  13   the Free Software Foundation; either version 2.1 of the License, or
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  24
  25 <refentry id="logind.conf" conditional='ENABLE_LOGIND'>
  26         <refentryinfo>
  27                 <title>logind.conf</title>
  28                 <productname>systemd</productname>
  29
  30                 <authorgroup>
  31                         <author>
  32                                 <contrib>Developer</contrib>
  33                                 <firstname>Lennart</firstname>
  34                                 <surname>Poettering</surname>
  35                                 <email>lennart@poettering.net</email>
  36                         </author>
  37                 </authorgroup>
  38         </refentryinfo>
  39
  40         <refmeta>
  41                 <refentrytitle>logind.conf</refentrytitle>
  42                 <manvolnum>5</manvolnum>
  43         </refmeta>
  44
  45         <refnamediv>
  46                 <refname>logind.conf</refname>
  47                 <refpurpose>Login manager configuration file</refpurpose>
  48         </refnamediv>
  49
  50         <refsynopsisdiv>
  51                 <para><filename>/etc/systemd/logind.conf</filename></para>
  52         </refsynopsisdiv>
  53
  54         <refsect1>
  55                 <title>Description</title>
  56
  57                 <para>This file configures various parameters of the systemd login manager <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
  58
  59         </refsect1>
  60
  61         <refsect1>
  62                 <title>Options</title>
  63
  64                 <para>All options are configured in the
  65                 <literal>[Login]</literal> section:</para>
  66
  67                 <variablelist>
  68
  69                         <varlistentry>
  70                                 <term><varname>NAutoVTs=</varname></term>
  71
  72                                 <listitem><para>Takes a positive
  73                                 integer. Configures how many virtual
  74                                 terminals (VTs) to allocate by default
  75                                 that -- when switched to and
  76                                 previously unused --
  77                                 <literal>autovt</literal> services are
  78                                 automatically spawned on. These
  79                                 services are instantiated from the
  80                                 template unit
  81                                 <filename>autovt@.service</filename>
  82                                 for the respective VT TTY name,
  83                                 e.g. <filename>autovt@tty4.service</filename>. By
  84                                 default
  85                                 <filename>autovt@.service</filename>
  86                                 is linked to
  87                                 <filename>getty@.service</filename>,
  88                                 i.e. login prompts are started
  89                                 dynamically as the user switches to
  90                                 unused virtual terminals. Hence, this
  91                                 parameter controls how many login
  92                                 <literal>gettys</literal> are
  93                                 available on the VTs. If a VT is
  94                                 already used by some other subsystem
  95                                 (for example a graphical login) this
  96                                 kind of activation will not be
  97                                 attempted. Note that the VT configured
  98                                 in <varname>ReserveVT=</varname> is
  99                                 always subject to this kind of
 100                                 activation, even if it is not one of
 101                                 VTs configured with the
 102                                 <varname>NAutoVTs=</varname>
 103                                 directive. Defaults to 6. When set to
 104                                 0, automatic spawning of
 105                                 <literal>autovt</literal> services is
 106                                 disabled. </para></listitem>
 107                         </varlistentry>
 108
 109                         <varlistentry>
 110                                 <term><varname>ReserveVT=</varname></term>
 111
 112                                 <listitem><para>Takes a positive
 113                                 integer. Configures the number of one
 114                                 virtual terminal that shall
 115                                 unconditionally be reserved for
 116                                 <filename>autovt@.service</filename>
 117                                 activation (see above). The VT
 118                                 selected with this option will be
 119                                 marked busy unconditionally so that no
 120                                 other subsystem will allocate it. This
 121                                 functionality is useful to ensure that
 122                                 regardless how many VTs are allocated
 123                                 by other subsystems one login
 124                                 <literal>getty</literal> is always
 125                                 available. Defaults to 6 (with other
 126                                 words: there'll always be a
 127                                 <literal>getty</literal> available on
 128                                 Alt-F6.). When set to 0, VT
 129                                 reservation is
 130                                 disabled.</para></listitem>
 131                         </varlistentry>
 132
 133                         <varlistentry>
 134                                 <term><varname>KillUserProcesses=</varname></term>
 135
 136                                 <listitem><para>Takes a boolean
 137                                 argument. Configures whether the
 138                                 processes of a user should be killed
 139                                 when she or he completely logs out (i.e. after
 140                                 her/his last session ended). Defaults to
 141                                 <literal>no</literal>.</para></listitem>
 142                         </varlistentry>
 143
 144                         <varlistentry>
 145                                 <term><varname>IdleAction=</varname></term>
 146
 147                                 <listitem><para>Configures the action
 148                                 to take when the system is idle. Takes
 149                                 one of <literal>ignore</literal>,
 150                                 <literal>poweroff</literal>,
 151                                 <literal>reboot</literal>,
 152                                 <literal>halt</literal>,
 153                                 <literal>kexec</literal>,
 154                                 <literal>suspend</literal>,
 155                                 <literal>hibernate</literal>,
 156                                 <literal>hybrid-sleep</literal>,
 157                                 <literal>lock</literal>. Defaults to
 158                                 <literal>ignore</literal>.</para>
 159
 160                                 <para>Note that this requires that
 161                                 user sessions correctly report the
 162                                 idle status to the system. The system
 163                                 will execute the action after all
 164                                 sessions reported that they are idle,
 165                                 and no idle inhibitor lock is active,
 166                                 and subsequently the time configured
 167                                 with <varname>IdleActionSec=</varname>
 168                                 (see below) has passed.</para>
 169                                 </listitem>
 170                         </varlistentry>
 171
 172                         <varlistentry>
 173                                 <term><varname>IdleActionSec=</varname></term>
 174
 175                                 <listitem><para>Configures the delay
 176                                 after which the action configured in
 177                                 <varname>IdleAction=</varname> (see
 178                                 above) is taken after the system is
 179                                 idle.</para></listitem>
 180                         </varlistentry>
 181
 182                         <varlistentry>
 183                                 <term><varname>KillOnlyUsers=</varname></term>
 184                                 <term><varname>KillExcludeUsers=</varname></term>
 185
 186                                 <listitem><para>These settings take
 187                                 space-separated lists of usernames
 188                                 that influence the effect of
 189                                 <varname>KillUserProcesses=</varname>. If
 190                                 not empty, only processes of users
 191                                 listed in
 192                                 <varname>KillOnlyUsers</varname> will
 193                                 be killed when they log out
 194                                 entirely. Processes of users listed in
 195                                 <varname>KillExcludeUsers=</varname>
 196                                 are excluded from being
 197                                 killed. <varname>KillExcludeUsers=</varname>
 198                                 defaults to <literal>root</literal>
 199                                 and takes precedence over
 200                                 <varname>KillOnlyUsers=</varname>
 201                                 which defaults to the empty list.</para></listitem>
 202                         </varlistentry>
 203
 204                         <varlistentry>
 205                                 <term><varname>Controllers=</varname></term>
 206                                 <term><varname>ResetControllers=</varname></term>
 207
 208                                 <listitem><para>These settings control
 209                                 the default control group hierarchies
 210                                 users logging in are added to, in
 211                                 addition to the
 212                                 <literal>name=systemd</literal> named
 213                                 hierarchy. These settings take
 214                                 space-separated lists of controller
 215                                 names. Pass the empty string to ensure
 216                                 that logind does not touch any
 217                                 hierarchies but systemd's own. When
 218                                 logging in, user sessions will get
 219                                 private control groups in all
 220                                 hierarchies listed in
 221                                 <varname>Controllers=</varname> and be
 222                                 reset to the root control group in all
 223                                 hierarchies listed in
 224                                 <varname>ResetControllers=</varname>. <varname>Controllers=</varname>
 225                                 defaults to the empty list,
 226                                 <varname>ResetControllers=</varname>
 227                                 defaults to
 228                                 <literal>cpu</literal>. Note that for
 229                                 all controllers that are not listed in
 230                                 either <varname>Controllers=</varname>
 231                                 or
 232                                 <varname>ResetControllers=</varname>,
 233                                 newly created sessions will be part of
 234                                 the control groups of the system
 235                                 service that created the
 236                                 session.</para></listitem>
 237                         </varlistentry>
 238
 239                         <varlistentry>
 240                                 <term><varname>InhibitDelayMaxSec=</varname></term>
 241
 242                                 <listitem><para>Specifies the maximum
 243                                 time a system shutdown or sleep
 244                                 request is delayed due to an inhibitor
 245                                 lock of type <literal>delay</literal>
 246                                 being active -- before it is ignored
 247                                 and the operation executed
 248                                 anyway. Defaults to
 249                                 5s.</para></listitem>
 250                         </varlistentry>
 251
 252                         <varlistentry>
 253                                 <term><varname>HandlePowerKey=</varname></term>
 254                                 <term><varname>HandleSuspendKey=</varname></term>
 255                                 <term><varname>HandleHibernateKey=</varname></term>
 256                                 <term><varname>HandleLidSwitch=</varname></term>
 257
 258                                 <listitem><para>Controls whether
 259                                 logind shall handle the system power
 260                                 and sleep keys and the lid switch to
 261                                 trigger actions such as system
 262                                 power-off or suspend. Can be one of
 263                                 <literal>ignore</literal>,
 264                                 <literal>poweroff</literal>,
 265                                 <literal>reboot</literal>,
 266                                 <literal>halt</literal>,
 267                                 <literal>kexec</literal>,
 268                                 <literal>suspend</literal>,
 269                                 <literal>hibernate</literal>,
 270                                 <literal>hybrid-sleep</literal> and
 271                                 <literal>lock</literal>. If
 272                                 <literal>ignore</literal>, logind will
 273                                 never handle these keys. If
 274                                 <literal>lock</literal>, all running
 275                                 sessions will be screen-locked; otherwise,
 276                                 the specified action
 277                                 will be taken in the respective
 278                                 event. Only input devices with the
 279                                 <literal>power-switch</literal> udev
 280                                 tag will be watched for key/lid switch
 281                                 events. <varname>HandlePowerKey=</varname>
 282                                 defaults to
 283                                 <literal>poweroff</literal>.
 284                                 <varname>HandleSuspendKey=</varname>
 285                                 and
 286                                 <varname>HandleLidSwitch=</varname>
 287                                 default to <literal>suspend</literal>.
 288                                 <varname>HandleHibernateKey=</varname>
 289                                 defaults to
 290                                 <literal>hibernate</literal>.</para></listitem>
 291                         </varlistentry>
 292
 293                         <varlistentry>
 294                                 <term><varname>PowerKeyIgnoreInhibited=</varname></term>
 295                                 <term><varname>SuspendKeyIgnoreInhibited=</varname></term>
 296                                 <term><varname>HibernateKeyIgnoreInhibited=</varname></term>
 297                                 <term><varname>LidSwitchIgnoreInhibited=</varname></term>
 298
 299                                 <listitem><para>Controls whether
 300                                 actions triggered by the power and
 301                                 sleep keys and the lid switch are
 302                                 subject to inhibitor locks. These
 303                                 settings take boolean arguments. If
 304                                 <literal>off</literal>, the inhibitor
 305                                 locks taken by applications in order
 306                                 to block the requested operation are
 307                                 respected, if <literal>on</literal>,
 308                                 the requested operation is executed in
 309                                 any
 310                                 case. <varname>PowerKeyIgnoreInhibited=</varname>,
 311                                 <varname>SuspendKeyIgnoreInhibited=</varname>
 312                                 and
 313                                 <varname>HibernateKeyIgnoreInhibited=</varname>
 314                                 defaults to <literal>off</literal>,
 315                                 <varname>LidSwitchIgnoreInhibited=</varname>
 316                                 defaults to
 317                                 <literal>yes</literal>. This means
 318                                 that the lid switch does not respect
 319                                 suspend blockers by default, but the
 320                                 power and sleep keys do.
 321                                 </para></listitem>
 322                         </varlistentry>
 323
 324                 </variablelist>
 325
 326                 <para>Note that setting
 327                 <varname>KillUserProcesses=1</varname> will break tools
 328                 like
 329                 <citerefentry><refentrytitle>screen</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
 330
 331                 <para>Note that <varname>KillUserProcesses=1</varname>
 332                 is a weaker version of
 333                 <varname>kill-session-processes=1</varname> which may
 334                 be configured per-service for
 335                 <citerefentry><refentrytitle>pam_systemd</refentrytitle><manvolnum>8</manvolnum></citerefentry>. The
 336                 latter kills processes of a session as soon as it
 337                 ends, the former kills processes as soon as the last
 338                 session of the user ends.</para>
 339         </refsect1>
 340
 341         <refsect1>
 342                   <title>See Also</title>
 343                   <para>
 344                           <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 345                           <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 346                           <citerefentry><refentrytitle>loginctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 347                           <citerefentry><refentrytitle>systemd-system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
 348                   </para>
 349         </refsect1>
 350
 351 </refentry>