man/logind.conf.xml

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   3 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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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
  12   under the terms of the GNU Lesser General Public License as published by
  13   the Free Software Foundation; either version 2.1 of the License, or
  14   (at your option) any later version.
  15
  16   systemd is distributed in the hope that it will be useful, but
  17   WITHOUT ANY WARRANTY; without even the implied warranty of
  18   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19   Lesser General Public License for more details.
  20
  21   You should have received a copy of the GNU Lesser General Public License
  22   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  23 -->
  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                 <refname>logind.conf.d</refname>
  48                 <refpurpose>Login manager configuration files</refpurpose>
  49         </refnamediv>
  50
  51         <refsynopsisdiv>
  52                 <para><filename>/etc/systemd/logind.conf</filename></para>
  53                 <para><filename>/etc/systemd/logind.conf.d/*.conf</filename></para>
  54                 <para><filename>/run/systemd/logind.conf.d/*.conf</filename></para>
  55                 <para><filename>/usr/lib/systemd/logind.conf.d/*.conf</filename></para>
  56         </refsynopsisdiv>
  57
  58         <refsect1>
  59                 <title>Description</title>
  60
  61                 <para>These files configure various parameters of the systemd login manager, <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
  62
  63                 <para>Each configuration file shall be named in the style of
  64                 <filename><replaceable>filename</replaceable>.conf</filename>.
  65                 Files in <filename>/etc/</filename> override files with the
  66                 same name in <filename>/usr/lib/</filename> and
  67                 <filename>/run/</filename>.  Files in
  68                 <filename>/run/</filename> override files with the same name in
  69                 <filename>/usr/lib/</filename>. Packages should install their
  70                 configuration files in <filename>/usr/lib/</filename>. Files in
  71                 <filename>/etc/</filename> are reserved for the local
  72                 administrator, who may use this logic to override the
  73                 configuration files installed by vendor packages. All
  74                 configuration files are sorted by their filename in
  75                 lexicographic order, regardless of which of the directories
  76                 they reside in. If multiple files specify the same option, the
  77                 entry in the file with the lexicographically latest name will
  78                 be applied; entries in any <filename>logind.conf.d</filename>
  79                 file override entries in
  80                 <filename>/etc/systemd/logind.conf</filename>. It is
  81                 recommended to prefix all filenames with a two-digit number and
  82                 a dash, to simplify the ordering of the files.</para>
  83         </refsect1>
  84
  85         <refsect1>
  86                 <title>Options</title>
  87
  88                 <para>All options are configured in the
  89                 <literal>[Login]</literal> section:</para>
  90
  91                 <variablelist>
  92
  93                         <varlistentry>
  94                                 <term><varname>NAutoVTs=</varname></term>
  95
  96                                 <listitem><para>Takes a positive
  97                                 integer. Configures how many virtual
  98                                 terminals (VTs) to allocate by default
  99                                 that, when switched to and are
 100                                 previously unused,
 101                                 <literal>autovt</literal> services are
 102                                 automatically spawned on. These
 103                                 services are instantiated from the
 104                                 template unit
 105                                 <filename>autovt@.service</filename>
 106                                 for the respective VT TTY name,
 107                                 for example, <filename>autovt@tty4.service</filename>. By
 108                                 default,
 109                                 <filename>autovt@.service</filename>
 110                                 is linked to
 111                                 <filename>getty@.service</filename>.
 112                                 In other words, login prompts are started
 113                                 dynamically as the user switches to
 114                                 unused virtual terminals. Hence, this
 115                                 parameter controls how many login
 116                                 <literal>gettys</literal> are
 117                                 available on the VTs. If a VT is
 118                                 already used by some other subsystem
 119                                 (for example, a graphical login), this
 120                                 kind of activation will not be
 121                                 attempted. Note that the VT configured
 122                                 in <varname>ReserveVT=</varname> is
 123                                 always subject to this kind of
 124                                 activation, even if it is not one of
 125                                 the VTs configured with the
 126                                 <varname>NAutoVTs=</varname>
 127                                 directive. Defaults to 6. When set to
 128                                 0, automatic spawning of
 129                                 <literal>autovt</literal> services is
 130                                 disabled.</para></listitem>
 131                         </varlistentry>
 132
 133                         <varlistentry>
 134                                 <term><varname>ReserveVT=</varname></term>
 135
 136                                 <listitem><para>Takes a positive
 137                                 integer. Identifies one
 138                                 virtual terminal that shall
 139                                 unconditionally be reserved for
 140                                 <filename>autovt@.service</filename>
 141                                 activation (see above). The VT
 142                                 selected with this option will be
 143                                 marked busy unconditionally, so that no
 144                                 other subsystem will allocate it. This
 145                                 functionality is useful to ensure that,
 146                                 regardless of how many VTs are allocated
 147                                 by other subsystems, one login
 148                                 <literal>getty</literal> is always
 149                                 available. Defaults to 6 (in other
 150                                 words, there will always be a
 151                                 <literal>getty</literal> available on
 152                                 Alt-F6.). When set to 0, VT
 153                                 reservation is
 154                                 disabled.</para></listitem>
 155                         </varlistentry>
 156
 157                         <varlistentry>
 158                                 <term><varname>KillUserProcesses=</varname></term>
 159
 160                                 <listitem><para>Takes a boolean
 161                                 argument. Configures whether the
 162                                 processes of a user should be killed
 163                                 when the user completely logs out (i.e. after
 164                                 the user's last session ended). Defaults to
 165                                 <literal>no</literal>.</para>
 166
 167                                 <para>Note that setting
 168                                 <varname>KillUserProcesses=1</varname>
 169                                 will break tools like
 170                                 <citerefentry><refentrytitle>screen</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para></listitem>
 171                         </varlistentry>
 172
 173                         <varlistentry>
 174                                 <term><varname>KillOnlyUsers=</varname></term>
 175                                 <term><varname>KillExcludeUsers=</varname></term>
 176
 177                                 <listitem><para>These settings take
 178                                 space-separated lists of usernames
 179                                 that influence the effect of
 180                                 <varname>KillUserProcesses=</varname>. If
 181                                 not empty, only processes of users
 182                                 listed in
 183                                 <varname>KillOnlyUsers=</varname> will
 184                                 be killed when they log out
 185                                 entirely. Processes of users listed in
 186                                 <varname>KillExcludeUsers=</varname>
 187                                 are excluded from being
 188                                 killed. <varname>KillExcludeUsers=</varname>
 189                                 defaults to <literal>root</literal>
 190                                 and takes precedence over
 191                                 <varname>KillOnlyUsers=</varname>,
 192                                 which defaults to the empty list.</para></listitem>
 193                         </varlistentry>
 194
 195                         <varlistentry>
 196                                 <term><varname>IdleAction=</varname></term>
 197
 198                                 <listitem><para>Configures the action
 199                                 to take when the system is idle. Takes
 200                                 one of <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>. Defaults to
 209                                 <literal>ignore</literal>.</para>
 210
 211                                 <para>Note that this requires that
 212                                 user sessions correctly report the
 213                                 idle status to the system. The system
 214                                 will execute the action after all
 215                                 sessions report that they are idle,
 216                                 no idle inhibitor lock is active,
 217                                 and subsequently, the time configured
 218                                 with <varname>IdleActionSec=</varname>
 219                                 (see below) has expired.</para>
 220                                 </listitem>
 221                         </varlistentry>
 222
 223                         <varlistentry>
 224                                 <term><varname>IdleActionSec=</varname></term>
 225
 226                                 <listitem><para>Configures the delay
 227                                 after which the action configured in
 228                                 <varname>IdleAction=</varname> (see
 229                                 above) is taken after the system is
 230                                 idle.</para></listitem>
 231                         </varlistentry>
 232
 233                         <varlistentry>
 234                                 <term><varname>InhibitDelayMaxSec=</varname></term>
 235
 236                                 <listitem><para>Specifies the maximum
 237                                 time a system shutdown or sleep
 238                                 request is delayed due to an inhibitor
 239                                 lock of type <literal>delay</literal>
 240                                 being active before the inhibitor is
 241                                 ignored and the operation executes
 242                                 anyway. Defaults to
 243                                 5.</para></listitem>
 244                         </varlistentry>
 245
 246                         <varlistentry>
 247                                 <term><varname>HandlePowerKey=</varname></term>
 248                                 <term><varname>HandleSuspendKey=</varname></term>
 249                                 <term><varname>HandleHibernateKey=</varname></term>
 250                                 <term><varname>HandleLidSwitch=</varname></term>
 251                                 <term><varname>HandleLidSwitchDocked=</varname></term>
 252
 253                                 <listitem><para>Controls whether
 254                                 logind shall handle the system power
 255                                 and sleep keys and the lid switch to
 256                                 trigger actions such as system
 257                                 power-off or suspend. Can be one of
 258                                 <literal>ignore</literal>,
 259                                 <literal>poweroff</literal>,
 260                                 <literal>reboot</literal>,
 261                                 <literal>halt</literal>,
 262                                 <literal>kexec</literal>,
 263                                 <literal>suspend</literal>,
 264                                 <literal>hibernate</literal>,
 265                                 <literal>hybrid-sleep</literal>, and
 266                                 <literal>lock</literal>. If
 267                                 <literal>ignore</literal>, logind will
 268                                 never handle these keys. If
 269                                 <literal>lock</literal>, all running
 270                                 sessions will be screen-locked;
 271                                 otherwise, the specified action will
 272                                 be taken in the respective event. Only
 273                                 input devices with the
 274                                 <literal>power-switch</literal> udev
 275                                 tag will be watched for key/lid switch
 276                                 events. <varname>HandlePowerKey=</varname>
 277                                 defaults to
 278                                 <literal>poweroff</literal>.
 279                                 <varname>HandleSuspendKey=</varname>
 280                                 and
 281                                 <varname>HandleLidSwitch=</varname>
 282                                 default to <literal>suspend</literal>.
 283                                 <varname>HandleLidSwitchDocked=</varname>
 284                                 defaults to <literal>ignore</literal>.
 285                                 <varname>HandleHibernateKey=</varname>
 286                                 defaults to
 287                                 <literal>hibernate</literal>. If the
 288                                 system is inserted in a docking station,
 289                                 or if more than one display is connected,
 290                                 the action specified by
 291                                 <varname>HandleLidSwitchDocked=</varname>
 292                                 occurs; otherwise the
 293                                 <varname>HandleLidSwitch=</varname>
 294                                 action occurs.</para></listitem>
 295                         </varlistentry>
 296
 297                         <varlistentry>
 298                                 <term><varname>PowerKeyIgnoreInhibited=</varname></term>
 299                                 <term><varname>SuspendKeyIgnoreInhibited=</varname></term>
 300                                 <term><varname>HibernateKeyIgnoreInhibited=</varname></term>
 301                                 <term><varname>LidSwitchIgnoreInhibited=</varname></term>
 302
 303                                 <listitem><para>Controls whether
 304                                 actions triggered by the power and
 305                                 sleep keys and the lid switch are
 306                                 subject to inhibitor locks. These
 307                                 settings take boolean arguments. If
 308                                 <literal>no</literal>, the inhibitor
 309                                 locks taken by applications in order
 310                                 to block the requested operation are
 311                                 respected. If <literal>yes</literal>,
 312                                 the requested operation is executed in
 313                                 any
 314                                 case. <varname>PowerKeyIgnoreInhibited=</varname>,
 315                                 <varname>SuspendKeyIgnoreInhibited=</varname>
 316                                 and
 317                                 <varname>HibernateKeyIgnoreInhibited=</varname>
 318                                 default to <literal>no</literal>.
 319                                 <varname>LidSwitchIgnoreInhibited=</varname>
 320                                 defaults to
 321                                 <literal>yes</literal>. This means
 322                                 that the lid switch does not respect
 323                                 suspend blockers by default, but the
 324                                 power and sleep keys do.
 325                                 </para></listitem>
 326                         </varlistentry>
 327
 328                         <varlistentry>
 329                                 <term><varname>RuntimeDirectorySize=</varname></term>
 330
 331                                 <listitem><para>Sets the size limit on
 332                                 the
 333                                 <varname>$XDG_RUNTIME_DIR</varname>
 334                                 runtime directory for each user who
 335                                 logs in. Takes a size in bytes,
 336                                 optionally suffixed with the usual K, G,
 337                                 M, and T suffixes, to the base 1024
 338                                 (IEC). Alternatively, a numerical
 339                                 percentage suffixed by <literal>%</literal>
 340                                 may be specified, which sets the size
 341                                 limit relative to the amount of
 342                                 physical RAM. Defaults to 10%. Note
 343                                 that this size is a safety limit
 344                                 only. As each runtime directory is a
 345                                 tmpfs file system, it will only consume
 346                                 as much memory as is needed.
 347                                 </para></listitem>
 348                         </varlistentry>
 349
 350                         <varlistentry>
 351                                 <term><varname>RemoveIPC=</varname></term>
 352
 353                                 <listitem><para>Controls whether
 354                                 System V and POSIX IPC objects
 355                                 belonging to the user shall be removed
 356                                 when the user fully logs out. Takes a
 357                                 boolean argument. If enabled, the user
 358                                 may not consume IPC resources after
 359                                 the last of the user's sessions
 360                                 terminated. This covers System V
 361                                 semaphores, shared memory and message
 362                                 queues, as well as POSIX shared memory
 363                                 and message queues. Note that IPC
 364                                 objects of the root user are excluded
 365                                 from the effect of this
 366                                 setting. Defaults to
 367                                 <literal>yes</literal>.</para></listitem>
 368                         </varlistentry>
 369
 370                 </variablelist>
 371         </refsect1>
 372
 373         <refsect1>
 374                   <title>See Also</title>
 375                   <para>
 376                           <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 377                           <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
 378                           <citerefentry><refentrytitle>loginctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
 379                           <citerefentry><refentrytitle>systemd-system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
 380                   </para>
 381         </refsect1>
 382
 383 </refentry>