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