2 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" >
4 <!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
6 <refentry id="org.freedesktop.login1" conditional='ENABLE_LOGIND'
7 xmlns:xi="http://www.w3.org/2001/XInclude">
9 <title>org.freedesktop.login1</title>
10 <productname>systemd</productname>
14 <refentrytitle>org.freedesktop.login1</refentrytitle>
15 <manvolnum>5</manvolnum>
19 <refname>org.freedesktop.login1</refname>
20 <refpurpose>The D-Bus interface of systemd-logind</refpurpose>
24 <title>Introduction</title>
26 <para><citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
27 is a system service that keeps track of user logins and seats.</para>
29 <para>The daemon provides both a C library interface as well as a D-Bus interface. The library interface
30 may be used to introspect and watch the state of user logins and seats. The bus interface provides the
31 same functionality but in addition may also be used to make changes to the system state. For more information please
32 consult <citerefentry><refentrytitle>sd-login</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
37 <title>The Manager Object</title>
39 <para>The service exposes the following interfaces on the Manager object on the bus:</para>
41 <programlisting executable="systemd-logind" node="/org/freedesktop/login1" interface="org.freedesktop.login1.Manager">
42 node /org/freedesktop/login1 {
43 interface org.freedesktop.login1.Manager {
45 GetSession(in s session_id,
47 GetSessionByPID(in u pid,
51 GetUserByPID(in u pid,
55 ListSessions(out a(susso) sessions);
56 ListSessionsEx(out a(sussussbto) sessions);
57 ListUsers(out a(uso) users);
58 ListSeats(out a(so) seats);
59 ListInhibitors(out a(ssssuu) inhibitors);
60 @org.freedesktop.systemd1.Privileged("true")
61 CreateSession(in u uid,
83 @org.freedesktop.systemd1.Privileged("true")
84 CreateSessionWithPIDFD(in u uid,
107 ReleaseSession(in s session_id);
108 ActivateSession(in s session_id);
109 ActivateSessionOnSeat(in s session_id,
111 LockSession(in s session_id);
112 UnlockSession(in s session_id);
115 KillSession(in s session_id,
120 TerminateSession(in s session_id);
121 TerminateUser(in u uid);
122 TerminateSeat(in s seat_id);
123 SetUserLinger(in u uid,
126 AttachDevice(in s seat_id,
129 FlushDevices(in b interactive);
130 PowerOff(in b interactive);
131 PowerOffWithFlags(in t flags);
132 Reboot(in b interactive);
133 RebootWithFlags(in t flags);
134 Halt(in b interactive);
135 HaltWithFlags(in t flags);
136 Suspend(in b interactive);
137 SuspendWithFlags(in t flags);
138 Hibernate(in b interactive);
139 HibernateWithFlags(in t flags);
140 HybridSleep(in b interactive);
141 HybridSleepWithFlags(in t flags);
142 SuspendThenHibernate(in b interactive);
143 SuspendThenHibernateWithFlags(in t flags);
145 CanPowerOff(out s result);
146 CanReboot(out s result);
147 CanHalt(out s result);
148 CanSuspend(out s result);
149 CanHibernate(out s result);
150 CanHybridSleep(out s result);
151 CanSuspendThenHibernate(out s result);
152 CanSleep(out s result);
153 ScheduleShutdown(in s type,
155 CancelScheduledShutdown(out b cancelled);
161 CanRebootParameter(out s result);
162 SetRebootParameter(in s parameter);
163 CanRebootToFirmwareSetup(out s result);
164 SetRebootToFirmwareSetup(in b enable);
165 CanRebootToBootLoaderMenu(out s result);
166 SetRebootToBootLoaderMenu(in t timeout);
167 CanRebootToBootLoaderEntry(out s result);
168 SetRebootToBootLoaderEntry(in s boot_loader_entry);
169 SetWallMessage(in s wall_message,
172 SecureAttentionKey(s seat_id,
174 SessionNew(s session_id,
176 SessionRemoved(s session_id,
184 SeatRemoved(s seat_id,
186 PrepareForShutdown(b start);
187 PrepareForShutdownWithMetadata(b start,
189 PrepareForSleep(b start);
191 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
192 @org.freedesktop.systemd1.Privileged("true")
193 readwrite b EnableWallMessages = ...;
194 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
195 @org.freedesktop.systemd1.Privileged("true")
196 readwrite s WallMessage = '...';
197 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
198 readonly u NAutoVTs = ...;
199 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
200 readonly as KillOnlyUsers = ['...', ...];
201 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
202 readonly as KillExcludeUsers = ['...', ...];
203 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
204 readonly b KillUserProcesses = ...;
205 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
206 readonly s RebootParameter = '...';
207 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
208 readonly b RebootToFirmwareSetup = ...;
209 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
210 readonly t RebootToBootLoaderMenu = ...;
211 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
212 readonly s RebootToBootLoaderEntry = '...';
213 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
214 readonly as BootLoaderEntries = ['...', ...];
215 readonly b IdleHint = ...;
216 readonly t IdleSinceHint = ...;
217 readonly t IdleSinceHintMonotonic = ...;
218 readonly s BlockInhibited = '...';
219 readonly s BlockWeakInhibited = '...';
220 readonly s DelayInhibited = '...';
221 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
222 readonly t InhibitDelayMaxUSec = ...;
223 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
224 readonly t UserStopDelayUSec = ...;
225 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
226 readonly as SleepOperation = ['...', ...];
227 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
228 readonly s HandlePowerKey = '...';
229 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
230 readonly s HandlePowerKeyLongPress = '...';
231 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
232 readonly s HandleRebootKey = '...';
233 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
234 readonly s HandleRebootKeyLongPress = '...';
235 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
236 readonly s HandleSuspendKey = '...';
237 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
238 readonly s HandleSuspendKeyLongPress = '...';
239 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
240 readonly s HandleHibernateKey = '...';
241 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
242 readonly s HandleHibernateKeyLongPress = '...';
243 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
244 readonly s HandleLidSwitch = '...';
245 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
246 readonly s HandleLidSwitchExternalPower = '...';
247 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
248 readonly s HandleLidSwitchDocked = '...';
249 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
250 readonly s HandleSecureAttentionKey = '...';
251 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
252 readonly t HoldoffTimeoutUSec = ...;
253 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
254 readonly s IdleAction = '...';
255 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
256 readonly t IdleActionUSec = ...;
257 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
258 readonly b PreparingForShutdown = ...;
259 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
260 readonly a{sv} PreparingForShutdownWithMetadata = [...];
261 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
262 readonly b PreparingForSleep = ...;
263 readonly (st) ScheduledShutdown = ...;
264 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
265 readonly s DesignatedMaintenanceTime = '...';
266 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
267 readonly b Docked = ...;
268 readonly b LidClosed = ...;
269 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
270 readonly b OnExternalPower = ...;
271 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
272 readonly b RemoveIPC = ...;
273 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
274 readonly t RuntimeDirectorySize = ...;
275 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
276 readonly t RuntimeDirectoryInodesMax = ...;
277 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
278 readonly t InhibitorsMax = ...;
279 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
280 readonly t NCurrentInhibitors = ...;
281 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
282 readonly t SessionsMax = ...;
283 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
284 readonly t NCurrentSessions = ...;
285 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
286 readonly t StopIdleSessionUSec = ...;
288 interface org.freedesktop.DBus.Peer { ... };
289 interface org.freedesktop.DBus.Introspectable { ... };
290 interface org.freedesktop.DBus.Properties { ... };
294 <!--property SleepOperation is not documented!-->
296 <!--property HandlePowerKeyLongPress is not documented!-->
298 <!--property HandleRebootKey is not documented!-->
300 <!--property HandleRebootKeyLongPress is not documented!-->
302 <!--property HandleSuspendKeyLongPress is not documented!-->
304 <!--property HandleHibernateKeyLongPress is not documented!-->
306 <!--property HandleSecureAttentionKey is not documented!-->
308 <!--property DesignatedMaintenanceTime is not documented!-->
310 <!--property StopIdleSessionUSec is not documented!-->
312 <!--Autogenerated cross-references for systemd.directives, do not edit-->
314 <variablelist class="dbus-interface" generated="True" extra-ref="org.freedesktop.login1.Manager"/>
316 <variablelist class="dbus-interface" generated="True" extra-ref="org.freedesktop.login1.Manager"/>
318 <variablelist class="dbus-method" generated="True" extra-ref="GetSession()"/>
320 <variablelist class="dbus-method" generated="True" extra-ref="GetSessionByPID()"/>
322 <variablelist class="dbus-method" generated="True" extra-ref="GetUser()"/>
324 <variablelist class="dbus-method" generated="True" extra-ref="GetUserByPID()"/>
326 <variablelist class="dbus-method" generated="True" extra-ref="GetSeat()"/>
328 <variablelist class="dbus-method" generated="True" extra-ref="ListSessions()"/>
330 <variablelist class="dbus-method" generated="True" extra-ref="ListSessionsEx()"/>
332 <variablelist class="dbus-method" generated="True" extra-ref="ListUsers()"/>
334 <variablelist class="dbus-method" generated="True" extra-ref="ListSeats()"/>
336 <variablelist class="dbus-method" generated="True" extra-ref="ListInhibitors()"/>
338 <variablelist class="dbus-method" generated="True" extra-ref="CreateSession()"/>
340 <variablelist class="dbus-method" generated="True" extra-ref="CreateSessionWithPIDFD()"/>
342 <variablelist class="dbus-method" generated="True" extra-ref="ReleaseSession()"/>
344 <variablelist class="dbus-method" generated="True" extra-ref="ActivateSession()"/>
346 <variablelist class="dbus-method" generated="True" extra-ref="ActivateSessionOnSeat()"/>
348 <variablelist class="dbus-method" generated="True" extra-ref="LockSession()"/>
350 <variablelist class="dbus-method" generated="True" extra-ref="UnlockSession()"/>
352 <variablelist class="dbus-method" generated="True" extra-ref="LockSessions()"/>
354 <variablelist class="dbus-method" generated="True" extra-ref="UnlockSessions()"/>
356 <variablelist class="dbus-method" generated="True" extra-ref="KillSession()"/>
358 <variablelist class="dbus-method" generated="True" extra-ref="KillUser()"/>
360 <variablelist class="dbus-method" generated="True" extra-ref="TerminateSession()"/>
362 <variablelist class="dbus-method" generated="True" extra-ref="TerminateUser()"/>
364 <variablelist class="dbus-method" generated="True" extra-ref="TerminateSeat()"/>
366 <variablelist class="dbus-method" generated="True" extra-ref="SetUserLinger()"/>
368 <variablelist class="dbus-method" generated="True" extra-ref="AttachDevice()"/>
370 <variablelist class="dbus-method" generated="True" extra-ref="FlushDevices()"/>
372 <variablelist class="dbus-method" generated="True" extra-ref="PowerOff()"/>
374 <variablelist class="dbus-method" generated="True" extra-ref="PowerOffWithFlags()"/>
376 <variablelist class="dbus-method" generated="True" extra-ref="Reboot()"/>
378 <variablelist class="dbus-method" generated="True" extra-ref="RebootWithFlags()"/>
380 <variablelist class="dbus-method" generated="True" extra-ref="Halt()"/>
382 <variablelist class="dbus-method" generated="True" extra-ref="HaltWithFlags()"/>
384 <variablelist class="dbus-method" generated="True" extra-ref="Suspend()"/>
386 <variablelist class="dbus-method" generated="True" extra-ref="SuspendWithFlags()"/>
388 <variablelist class="dbus-method" generated="True" extra-ref="Hibernate()"/>
390 <variablelist class="dbus-method" generated="True" extra-ref="HibernateWithFlags()"/>
392 <variablelist class="dbus-method" generated="True" extra-ref="HybridSleep()"/>
394 <variablelist class="dbus-method" generated="True" extra-ref="HybridSleepWithFlags()"/>
396 <variablelist class="dbus-method" generated="True" extra-ref="SuspendThenHibernate()"/>
398 <variablelist class="dbus-method" generated="True" extra-ref="SuspendThenHibernateWithFlags()"/>
400 <variablelist class="dbus-method" generated="True" extra-ref="Sleep()"/>
402 <variablelist class="dbus-method" generated="True" extra-ref="CanPowerOff()"/>
404 <variablelist class="dbus-method" generated="True" extra-ref="CanReboot()"/>
406 <variablelist class="dbus-method" generated="True" extra-ref="CanHalt()"/>
408 <variablelist class="dbus-method" generated="True" extra-ref="CanSuspend()"/>
410 <variablelist class="dbus-method" generated="True" extra-ref="CanHibernate()"/>
412 <variablelist class="dbus-method" generated="True" extra-ref="CanHybridSleep()"/>
414 <variablelist class="dbus-method" generated="True" extra-ref="CanSuspendThenHibernate()"/>
416 <variablelist class="dbus-method" generated="True" extra-ref="CanSleep()"/>
418 <variablelist class="dbus-method" generated="True" extra-ref="ScheduleShutdown()"/>
420 <variablelist class="dbus-method" generated="True" extra-ref="CancelScheduledShutdown()"/>
422 <variablelist class="dbus-method" generated="True" extra-ref="Inhibit()"/>
424 <variablelist class="dbus-method" generated="True" extra-ref="CanRebootParameter()"/>
426 <variablelist class="dbus-method" generated="True" extra-ref="SetRebootParameter()"/>
428 <variablelist class="dbus-method" generated="True" extra-ref="CanRebootToFirmwareSetup()"/>
430 <variablelist class="dbus-method" generated="True" extra-ref="SetRebootToFirmwareSetup()"/>
432 <variablelist class="dbus-method" generated="True" extra-ref="CanRebootToBootLoaderMenu()"/>
434 <variablelist class="dbus-method" generated="True" extra-ref="SetRebootToBootLoaderMenu()"/>
436 <variablelist class="dbus-method" generated="True" extra-ref="CanRebootToBootLoaderEntry()"/>
438 <variablelist class="dbus-method" generated="True" extra-ref="SetRebootToBootLoaderEntry()"/>
440 <variablelist class="dbus-method" generated="True" extra-ref="SetWallMessage()"/>
442 <variablelist class="dbus-signal" generated="True" extra-ref="SecureAttentionKey()"/>
444 <variablelist class="dbus-signal" generated="True" extra-ref="SessionNew()"/>
446 <variablelist class="dbus-signal" generated="True" extra-ref="SessionRemoved()"/>
448 <variablelist class="dbus-signal" generated="True" extra-ref="UserNew()"/>
450 <variablelist class="dbus-signal" generated="True" extra-ref="UserRemoved()"/>
452 <variablelist class="dbus-signal" generated="True" extra-ref="SeatNew()"/>
454 <variablelist class="dbus-signal" generated="True" extra-ref="SeatRemoved()"/>
456 <variablelist class="dbus-signal" generated="True" extra-ref="PrepareForShutdown()"/>
458 <variablelist class="dbus-signal" generated="True" extra-ref="PrepareForShutdownWithMetadata()"/>
460 <variablelist class="dbus-signal" generated="True" extra-ref="PrepareForSleep()"/>
462 <variablelist class="dbus-property" generated="True" extra-ref="EnableWallMessages"/>
464 <variablelist class="dbus-property" generated="True" extra-ref="WallMessage"/>
466 <variablelist class="dbus-property" generated="True" extra-ref="NAutoVTs"/>
468 <variablelist class="dbus-property" generated="True" extra-ref="KillOnlyUsers"/>
470 <variablelist class="dbus-property" generated="True" extra-ref="KillExcludeUsers"/>
472 <variablelist class="dbus-property" generated="True" extra-ref="KillUserProcesses"/>
474 <variablelist class="dbus-property" generated="True" extra-ref="RebootParameter"/>
476 <variablelist class="dbus-property" generated="True" extra-ref="RebootToFirmwareSetup"/>
478 <variablelist class="dbus-property" generated="True" extra-ref="RebootToBootLoaderMenu"/>
480 <variablelist class="dbus-property" generated="True" extra-ref="RebootToBootLoaderEntry"/>
482 <variablelist class="dbus-property" generated="True" extra-ref="BootLoaderEntries"/>
484 <variablelist class="dbus-property" generated="True" extra-ref="IdleHint"/>
486 <variablelist class="dbus-property" generated="True" extra-ref="IdleSinceHint"/>
488 <variablelist class="dbus-property" generated="True" extra-ref="IdleSinceHintMonotonic"/>
490 <variablelist class="dbus-property" generated="True" extra-ref="BlockInhibited"/>
492 <variablelist class="dbus-property" generated="True" extra-ref="BlockWeakInhibited"/>
494 <variablelist class="dbus-property" generated="True" extra-ref="DelayInhibited"/>
496 <variablelist class="dbus-property" generated="True" extra-ref="InhibitDelayMaxUSec"/>
498 <variablelist class="dbus-property" generated="True" extra-ref="UserStopDelayUSec"/>
500 <variablelist class="dbus-property" generated="True" extra-ref="SleepOperation"/>
502 <variablelist class="dbus-property" generated="True" extra-ref="HandlePowerKey"/>
504 <variablelist class="dbus-property" generated="True" extra-ref="HandlePowerKeyLongPress"/>
506 <variablelist class="dbus-property" generated="True" extra-ref="HandleRebootKey"/>
508 <variablelist class="dbus-property" generated="True" extra-ref="HandleRebootKeyLongPress"/>
510 <variablelist class="dbus-property" generated="True" extra-ref="HandleSuspendKey"/>
512 <variablelist class="dbus-property" generated="True" extra-ref="HandleSuspendKeyLongPress"/>
514 <variablelist class="dbus-property" generated="True" extra-ref="HandleHibernateKey"/>
516 <variablelist class="dbus-property" generated="True" extra-ref="HandleHibernateKeyLongPress"/>
518 <variablelist class="dbus-property" generated="True" extra-ref="HandleLidSwitch"/>
520 <variablelist class="dbus-property" generated="True" extra-ref="HandleLidSwitchExternalPower"/>
522 <variablelist class="dbus-property" generated="True" extra-ref="HandleLidSwitchDocked"/>
524 <variablelist class="dbus-property" generated="True" extra-ref="HandleSecureAttentionKey"/>
526 <variablelist class="dbus-property" generated="True" extra-ref="HoldoffTimeoutUSec"/>
528 <variablelist class="dbus-property" generated="True" extra-ref="IdleAction"/>
530 <variablelist class="dbus-property" generated="True" extra-ref="IdleActionUSec"/>
532 <variablelist class="dbus-property" generated="True" extra-ref="PreparingForShutdown"/>
534 <variablelist class="dbus-property" generated="True" extra-ref="PreparingForShutdownWithMetadata"/>
536 <variablelist class="dbus-property" generated="True" extra-ref="PreparingForSleep"/>
538 <variablelist class="dbus-property" generated="True" extra-ref="ScheduledShutdown"/>
540 <variablelist class="dbus-property" generated="True" extra-ref="DesignatedMaintenanceTime"/>
542 <variablelist class="dbus-property" generated="True" extra-ref="Docked"/>
544 <variablelist class="dbus-property" generated="True" extra-ref="LidClosed"/>
546 <variablelist class="dbus-property" generated="True" extra-ref="OnExternalPower"/>
548 <variablelist class="dbus-property" generated="True" extra-ref="RemoveIPC"/>
550 <variablelist class="dbus-property" generated="True" extra-ref="RuntimeDirectorySize"/>
552 <variablelist class="dbus-property" generated="True" extra-ref="RuntimeDirectoryInodesMax"/>
554 <variablelist class="dbus-property" generated="True" extra-ref="InhibitorsMax"/>
556 <variablelist class="dbus-property" generated="True" extra-ref="NCurrentInhibitors"/>
558 <variablelist class="dbus-property" generated="True" extra-ref="SessionsMax"/>
560 <variablelist class="dbus-property" generated="True" extra-ref="NCurrentSessions"/>
562 <variablelist class="dbus-property" generated="True" extra-ref="StopIdleSessionUSec"/>
564 <!--End of Autogenerated section-->
567 <title>Methods</title>
569 <para><function>GetSession()</function> may be used to get the session object path for the session with
570 the specified ID. Similarly, <function>GetUser()</function> and <function>GetSeat()</function> get the
571 user and seat objects, respectively. <function>GetSessionByPID()</function> and
572 <function>GetUserByPID()</function> get the session/user object the specified PID belongs to if there
575 <para><function>ListSessions()</function> returns an array of all current sessions. The structures in
576 the array consist of the following fields: <varname>session id</varname>, <varname>user id</varname>,
577 <varname>user name</varname>, <varname>seat id</varname>, and <varname>session object path</varname>.
578 If a session does not have a seat attached, the seat id field will be an empty string.</para>
580 <para><function>ListSessionsEx()</function> returns an array of all current sessions with more metadata
581 than <function>ListSessions()</function>. The structures in the array consist of the following fields:
582 <varname>session id</varname>, <varname>user id</varname>, <varname>user name</varname>,
583 <varname>seat id</varname>, <varname>leader pid</varname>, <varname>session class</varname>,
584 <varname>tty name</varname>, <varname>idle hint</varname>, <varname>idle hint monotonic timestamp</varname>,
585 and <varname>session object path</varname>. <varname>tty</varname> and <varname>seat id</varname> fields
586 could be empty, if the session has no associated tty or session has no seat attached, respectively.</para>
588 <para><function>ListUsers()</function> returns an array of all currently logged in users. The
589 structures in the array consist of the following fields: user id, user name, user object path.</para>
591 <para><function>ListSeats()</function> returns an array of all currently available seats. The
592 structure in the array consists of the following fields: seat id, seat object path.</para>
594 <para><function>ListInhibitors()</function> lists all currently active inhibitors. It returns an array of
595 structures consisting of <varname>what</varname>, <varname>who</varname>, <varname>why</varname>,
596 <varname>mode</varname>, <varname>uid</varname> (user ID), and <varname>pid</varname> (process ID).</para>
598 <para><function>CreateSession()</function>, <function>CreateSessionWithPIDFD()</function>, and
599 <function>ReleaseSession()</function> may be used to open or close login sessions. These calls should
600 <emphasis>never</emphasis> be invoked directly by clients. Creating/closing sessions is exclusively the job
601 of PAM and its <citerefentry><refentrytitle>pam_systemd</refentrytitle><manvolnum>8</manvolnum></citerefentry>
604 <para><function>ActivateSession()</function> brings the session with the specified ID into the
605 foreground. <function>ActivateSessionOnSeat()</function> does the same, but only if the seat id
608 <para><function>LockSession()</function> asks the session with the specified ID to activate the screen
609 lock. <function>UnlockSession()</function> asks the session with the specified ID to remove an active
610 screen lock, if there is any. This is implemented by sending out the Lock() and Unlock() signals from
611 the respective session object which session managers are supposed to listen on.</para>
613 <para><function>LockSessions()</function> asks all sessions to activate their screen locks. This may be
614 used to lock access to the entire machine in one action. Similarly, <function>UnlockSessions()</function>
615 asks all sessions to deactivate their screen locks.</para>
617 <para><function>KillSession()</function> may be used to send a Unix signal to one or all processes of a
618 session. As arguments it takes the session id, either the string <literal>leader</literal> or
619 <literal>all</literal> and a signal number. If <literal>leader</literal> is passed only the session
620 <literal>leader</literal> is killed. If <literal>all</literal> is passed all processes of the session
623 <para><function>KillUser()</function> may be used to send a Unix signal to all processes of a user. As
624 arguments it takes the user id and a signal number.</para>
626 <para><function>TerminateSession()</function>, <function>TerminateUser()</function>,
627 <function>TerminateSeat()</function> may be used to forcibly terminate one specific session, all
628 processes of a user, and all sessions attached to a specific seat, respectively. The session, user,
629 and seat are identified by their respective IDs.</para>
631 <para><function>SetUserLinger()</function> enables or disables user lingering. If enabled, the runtime
632 directory of a user is kept around and they may continue to run processes while logged out. If
633 disabled, the runtime directory goes away as soon as they log out. <function>SetUserLinger()</function>
634 expects three arguments: the UID, a boolean whether to enable/disable and a boolean controlling the
635 <ulink url="https://www.freedesktop.org/software/polkit/docs/latest/">polkit</ulink>
636 authorization interactivity (see below). Note that the user linger state is persistently
637 stored on disk.</para>
639 <para><function>AttachDevice()</function> may be used to assign a specific device to a specific
640 seat. The device is identified by its <filename>/sys/</filename> path and must be eligible for seat
641 assignments. <function>AttachDevice()</function> takes three arguments: the seat id, the sysfs path,
642 and a boolean for controlling polkit interactivity (see below). Device assignments are persistently
643 stored on disk. To create a new seat, simply specify a previously unused seat id. For more information
644 about the seat assignment logic see
645 <citerefentry><refentrytitle>sd-login</refentrytitle><manvolnum>3</manvolnum></citerefentry>.</para>
647 <para><function>FlushDevices()</function> removes all explicit seat assignments for devices, resetting
648 all assignments to the automatic defaults. The only argument it takes is the polkit interactivity
649 boolean (see below).</para>
651 <para><function>PowerOff()</function>, <function>Reboot()</function>, <function>Halt()</function>,
652 <function>Suspend()</function>, and <function>Hibernate()</function> result in the system being powered
653 off, rebooted, halted (shut down without turning off power), suspended (the system state is saved to
654 RAM and the CPU is turned off), or hibernated (the system state is saved to disk and the machine is
655 powered down). <function>HybridSleep()</function> results in the system entering a hybrid-sleep mode,
656 i.e. the system is both hibernated and suspended. <function>SuspendThenHibernate()</function> results
657 in the system being suspended, then later woken using an RTC timer and hibernated. The only argument is
658 the polkit interactivity boolean <varname>interactive</varname> (see below). The main purpose of these
659 calls is that they enforce polkit policy and hence allow powering off/rebooting/suspending/hibernating
660 even by unprivileged users. They also enforce inhibition locks for non-privileged users.
661 <function>Sleep()</function> automatically selects the most suitable sleep operation supported by the
662 machine. The candidate sleep operations to check for support can be configured through <varname>SleepOperation=</varname>
663 setting in <citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
664 UIs should expose these calls as the primary mechanism to poweroff/reboot/suspend/hibernate the machine. Methods
665 <function>PowerOffWithFlags()</function>, <function>RebootWithFlags()</function>,
666 <function>HaltWithFlags()</function>, <function>SuspendWithFlags()</function>,
667 <function>HibernateWithFlags()</function>, <function>HybridSleepWithFlags()</function>,
668 <function>SuspendThenHibernateWithFlags()</function>, and <function>Sleep()</function> take
669 <varname>flags</varname> to allow for extendability, defined as follows:</para>
671 #define SD_LOGIND_ROOT_CHECK_INHIBITORS (UINT64_C(1) << 0)
672 #define SD_LOGIND_KEXEC_REBOOT (UINT64_C(1) << 1)
673 #define SD_LOGIND_SOFT_REBOOT (UINT64_C(1) << 2)
674 #define SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP (UINT64_C(1) << 3)
675 #define SD_LOGIND_SKIP_INHIBITORS (UINT64_C(1) << 4)
677 <para>When the <varname>flags</varname> is 0 then these methods behave just like the versions without
678 flags. Since systemd version 257 active inhibitors are honoured by default for privileged users too.
679 <constant>SD_LOGIND_ROOT_CHECK_INHIBITORS</constant> (0x01) now only applies to weak inhibitors, to
680 request that they honoured for privileged users too, since they ignore them by default. A new flag
681 <constant>SD_LOGIND_SKIP_INHIBITORS</constant> (0x04) can be specified to bypass all types of
682 inhibitors. When <constant>SD_LOGIND_KEXEC_REBOOT</constant> (0x02) is set, then
683 <function>RebootWithFlags()</function> performs a kexec reboot if kexec kernel is loaded. When
684 <constant>SD_LOGIND_SOFT_REBOOT</constant> (0x04) is set, or
685 <constant>SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP</constant> (0x08) is set and a new root file system
686 has been set up on <literal>/run/nextroot/</literal>, then <function>RebootWithFlags()</function>
687 performs a userspace reboot only. <constant>SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP</constant> and
688 <constant>SD_LOGIND_KEXEC_REBOOT</constant> can be combined, with soft-reboot having precedence.
691 <para><function>SetRebootParameter()</function> sets a parameter for a subsequent reboot operation.
692 See the description of <command>reboot</command> in
693 <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry> and
694 <citerefentry project="man-pages"><refentrytitle>reboot</refentrytitle><manvolnum>2</manvolnum></citerefentry>
695 for more information.</para>
697 <para><function>SetRebootToFirmwareSetup()</function>,
698 <function>SetRebootToBootLoaderMenu()</function>, and <function>SetRebootToBootLoaderEntry()</function>
699 configure the action to be taken from the boot loader after a reboot: respectively entering firmware
700 setup mode, the boot loader menu, or a specific boot loader entry. See
701 <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry> for the
702 corresponding command line interface.</para>
704 <para><function>CanPowerOff()</function>, <function>CanReboot()</function>, <function>CanHalt()</function>,
705 <function>CanSuspend()</function>, <function>CanHibernate()</function>, <function>CanHybridSleep()</function>,
706 <function>CanSuspendThenHibernate()</function>, <function>CanSleep()</function>,
707 <function>CanRebootParameter()</function>, <function>CanRebootToFirmwareSetup()</function>,
708 <function>CanRebootToBootLoaderMenu()</function>, and <function>CanRebootToBootLoaderEntry()</function>
709 test whether the system supports the respective operation and whether the calling user is allowed to
710 execute it. Returns one of <literal>na</literal>, <literal>yes</literal>, <literal>no</literal>, and
711 <literal>challenge</literal>. If <literal>na</literal> is returned, the operation is not available because
712 hardware, kernel, or drivers do not support it. If <literal>yes</literal> is returned, the operation is
713 supported and the user may execute the operation without further authentication. If <literal>no</literal>
714 is returned, the operation is available but the user is not allowed to execute the operation. If
715 <literal>challenge</literal> is returned, the operation is available but only after authorization.</para>
717 <para><function>ScheduleShutdown()</function> schedules a shutdown operation <varname>type</varname> at
718 time <varname>usec</varname> in microseconds since the UNIX epoch. Alternatively, if
719 <varname>usec</varname> <literal>UINT64_MAX</literal> and a maintenance window is
720 configured, <filename>systemd-logind</filename> will use the next time of the maintenance window
721 instead. <varname>type</varname> can be one
722 of <literal>poweroff</literal>, <literal>dry-poweroff</literal>, <literal>reboot</literal>,
723 <literal>dry-reboot</literal>, <literal>halt</literal>, and <literal>dry-halt</literal>. (The
724 <literal>dry-</literal> variants do not actually execute the shutdown action.)
725 <function>CancelScheduledShutdown()</function> cancels a scheduled shutdown. The output parameter
726 <varname>cancelled</varname> is true if a shutdown operation was scheduled.</para>
728 <para><function>SetWallMessage()</function> sets the wall message (the message that will be sent out to
729 all terminals and stored in a
730 <citerefentry project="man-pages"><refentrytitle>utmp</refentrytitle><manvolnum>5</manvolnum></citerefentry> record) for a
731 subsequent scheduled shutdown operation. The parameter <varname>wall_message</varname> specifies the
732 shutdown reason (and may be empty) which will be included in the shutdown message. The parameter
733 <varname>enable</varname> specifies whether to print a wall message on shutdown.</para>
735 <para><function>Inhibit()</function> creates an inhibition lock. It takes four parameters:
736 <varname>what</varname>, <varname>who</varname>, <varname>why</varname>, and
737 <varname>mode</varname>. <varname>what</varname> is one or more of <literal>shutdown</literal>,
738 <literal>sleep</literal>, <literal>idle</literal>, <literal>handle-power-key</literal>,
739 <literal>handle-suspend-key</literal>, <literal>handle-hibernate-key</literal>,
740 <literal>handle-lid-switch</literal>, separated by colons, for inhibiting poweroff/reboot,
741 suspend/hibernate, the automatic idle logic, or hardware key handling. <varname>who</varname> should be
742 a short human readable string identifying the application taking the lock. <varname>why</varname>
743 should be a short human readable string identifying the reason why the lock is taken. Finally,
744 <varname>mode</varname> is either <literal>block</literal> or <literal>delay</literal> which encodes
745 whether the inhibit shall be consider mandatory or whether it should just delay the operation to a
746 certain maximum time, while the <literal>block-weak</literal> and variants will create an inhibitor
747 that is automatically ignored in some circumstances. The method returns a file descriptor. The lock is
748 released the moment this file descriptor and all its duplicates are closed. For more information on
749 the inhibition logic see <ulink url="https://systemd.io/INHIBITOR_LOCKS">Inhibitor Locks</ulink>.
754 <title>Signals</title>
756 <para>Whenever the inhibition state or idle hint changes, <function>PropertyChanged</function>
757 signals are sent out to which clients can subscribe.</para>
759 <para>The <function>SecureAttentionKey()</function> signal is sent when the user presses Ctrl+Alt+Shift+Esc to
760 request the login manager to display the greeter, for instance in the case of a deadlocked compositor.
763 <para>The <function>SessionNew()</function>, <function>SessionRemoved()</function>,
764 <function>UserNew()</function>, <function>UserRemoved()</function>, <function>SeatNew()</function>, and
765 <function>SeatRemoved()</function> signals are sent each time a session is created or removed, a user
766 logs in or out, or a seat is added or removed. They each contain the ID of the object plus the object
769 <para>The <function>PrepareForShutdown()</function>,
770 <function>PrepareForShutdownWithMetadata()</function>, and <function>PrepareForSleep()</function>
771 signals are sent right before (with the argument <literal>true</literal>) or after (with the argument
772 <literal>false</literal>) the system goes down for reboot/poweroff and suspend/hibernate,
773 respectively. This may be used by applications to save data on disk, release memory, or do other jobs
774 that should be done shortly before shutdown/sleep, in conjunction with delay inhibitor locks. After
775 completion of this work they should release their inhibition locks in order to not delay the operation
776 any further. For more information see
777 <ulink url="https://systemd.io/INHIBITOR_LOCKS">Inhibitor Locks</ulink>. The
778 <function>PrepareForShutdownWithMetadata()</function> signal additionally sends a list of key/value
779 pair metadata fields. Currently it sends a <varname>type</varname> string which defines the type of
780 shutdown. The type can be one of <literal>power-off</literal>, <literal>reboot</literal>,
781 <literal>halt</literal>, <literal>kexec</literal> or <literal>soft-reboot</literal>. This signal is
782 sent first, followed by <function>PrepareForShutdown()</function> (for backward compatibility).</para>
786 <title>Properties</title>
788 <para>Most properties simply reflect the configuration, see
789 <citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>. This
790 includes: <varname>NAutoVTs</varname>, <varname>KillOnlyUsers</varname>,
791 <varname>KillExcludeUsers</varname>, <varname>KillUserProcesses</varname>, <varname>IdleAction</varname>,
792 <varname>InhibitDelayMaxUSec</varname>,
793 <varname>InhibitorsMax</varname>,
794 <varname>UserStopDelayUSec</varname>,
795 <varname>HandlePowerKey</varname>, <varname>HandleSuspendKey</varname>,
796 <varname>HandleHibernateKey</varname>, <varname>HandleLidSwitch</varname>,
797 <varname>HandleLidSwitchExternalPower</varname>, <varname>HandleLidSwitchDocked</varname>,
798 <varname>IdleActionUSec</varname>, <varname>HoldoffTimeoutUSec</varname>,
799 <varname>RemoveIPC</varname>, <varname>RuntimeDirectorySize</varname>,
800 <varname>RuntimeDirectoryInodesMax</varname>, <varname>InhibitorsMax</varname>, and
801 <varname>SessionsMax</varname>.
804 <para>The <varname>IdleHint</varname> property reflects the idle hint state of the system. If the
805 system is idle it might get into automatic suspend or shutdown depending on the configuration.</para>
807 <para><varname>IdleSinceHint</varname> and <varname>IdleSinceHintMonotonic</varname> encode the
808 timestamps of the last change of the idle hint boolean, in <constant>CLOCK_REALTIME</constant> and
809 <constant>CLOCK_MONOTONIC</constant> timestamps, respectively, in microseconds since the epoch.</para>
811 <para>The <varname>BlockInhibited</varname>, <varname>BlockWeakInhibited</varname>, and
812 <varname>DelayInhibited</varname> properties encode the currently active locks of the respective
813 modes. They are colon separated lists of <literal>shutdown</literal>, <literal>sleep</literal>, and
814 <literal>idle</literal> (see above).</para>
816 <para><varname>NCurrentSessions</varname> and <varname>NCurrentInhibitors</varname> contain the number
817 of currently registered sessions and inhibitors.</para>
819 <para>The <varname>BootLoaderEntries</varname> property contains a list of boot loader entries.
820 This includes boot loader entries defined in configuration and any additional loader entries
821 reported by the boot loader. See
822 <citerefentry><refentrytitle>systemd-boot</refentrytitle><manvolnum>7</manvolnum></citerefentry>
823 for more information.</para>
825 <para>The <varname>PreparingForShutdown</varname> and <varname>PreparingForSleep</varname> boolean
826 properties are true during the interval between the two <function>PrepareForShutdown()</function> and
827 <function>PrepareForSleep()</function> signals respectively. The
828 <varname>PreparingForShutdownWithMetadata</varname> property provides a list of key/value pair
829 metadata fields. Currently it lists a <varname>preparing</varname> boolean that corresponds to the
830 <varname>PreparingForShutdown</varname> property, and, if a shutdown is being prepared, it will also
831 contain a <varname>type</varname> string which defines the type of shutdown. The type can be one of
832 <literal>power-off</literal>, <literal>reboot</literal>, <literal>halt</literal>,
833 <literal>kexec</literal> or <literal>soft-reboot</literal>. Note that these properties do not send out
834 <function>PropertyChanged</function> signals.</para>
836 <para>The <varname>RebootParameter</varname> property shows the value set with the
837 <function>SetRebootParameter()</function> method described above.</para>
839 <para><varname>ScheduledShutdown</varname> shows the value pair set with the
840 <function>ScheduleShutdown()</function> method described above.</para>
842 <para><varname>RebootToFirmwareSetup</varname>, <varname>RebootToBootLoaderMenu</varname>, and
843 <varname>RebootToBootLoaderEntry</varname> are true when the resprective post-reboot operation was
844 selected with <function>SetRebootToFirmwareSetup()</function>,
845 <function>SetRebootToBootLoaderMenu()</function>, or
846 <function>SetRebootToBootLoaderEntry()</function>.</para>
848 <para>The <varname>WallMessage</varname> and <varname>EnableWallMessages</varname> properties reflect the
849 shutdown reason and wall message enablement switch which can be set with the
850 <function>SetWallMessage()</function> method described above.</para>
852 <para><varname>Docked</varname> is true if the machine is connected to a dock.
853 <varname>LidClosed</varname> is true when the lid (of a laptop) is closed.
854 <varname>OnExternalPower</varname> is true when the machine is connected to an external power supply.
859 <title>Security</title>
861 <para>A number of operations are protected via the polkit privilege
862 system. <function>SetUserLinger()</function> requires the
863 <interfacename>org.freedesktop.login1.set-user-linger</interfacename>
864 privilege. <function>AttachDevice()</function> requires
865 <interfacename>org.freedesktop.login1.attach-device</interfacename> and
866 <function>FlushDevices()</function> requires
867 <interfacename>org.freedesktop.login1.flush-devices</interfacename>. <function>PowerOff()</function>,
868 <function>Reboot()</function>, <function>Halt()</function>, <function>Suspend()</function>,
869 <function>Hibernate()</function> require
870 <interfacename>org.freedesktop.login1.power-off</interfacename>,
871 <interfacename>org.freedesktop.login1.power-off-multiple-sessions</interfacename>,
872 <interfacename>org.freedesktop.login1.power-off-ignore-inhibit</interfacename>,
873 <interfacename>org.freedesktop.login1.reboot</interfacename>,
874 <interfacename>org.freedesktop.login1.reboot-multiple-sessions</interfacename>,
875 <interfacename>org.freedesktop.login1.reboot-ignore-inhibit</interfacename>,
876 <interfacename>org.freedesktop.login1.halt</interfacename>,
877 <interfacename>org.freedesktop.login1.halt-multiple-sessions</interfacename>,
878 <interfacename>org.freedesktop.login1.halt-ignore-inhibit</interfacename>,
879 <interfacename>org.freedesktop.login1.suspend</interfacename>,
880 <interfacename>org.freedesktop.login1.suspend-multiple-sessions</interfacename>,
881 <interfacename>org.freedesktop.login1.suspend-ignore-inhibit</interfacename>,
882 <interfacename>org.freedesktop.login1.hibernate</interfacename>,
883 <interfacename>org.freedesktop.login1.hibernate-multiple-sessions</interfacename>,
884 <interfacename>org.freedesktop.login1.hibernate-ignore-inhibit</interfacename>,
885 respectively depending on whether there are other sessions around or active inhibits are present.
886 <function>HybridSleep()</function> and <function>SuspendThenHibernate()</function>
887 use the same privileges as <function>Hibernate()</function>. <function>Sleep()</function> uses
888 the inhibits of the auto-selected sleep operation. <function>SetRebootParameter()</function> requires
889 <interfacename>org.freedesktop.login1.set-reboot-parameter</interfacename>.</para>
891 <para><function>SetRebootToFirmwareSetup()</function> requires
892 <interfacename>org.freedesktop.login1.set-reboot-to-firmware-setup</interfacename>.
893 <function>SetRebootToBootLoaderMenu()</function> requires
894 <interfacename>org.freedesktop.login1.set-reboot-to-boot-loader-menu</interfacename>.
895 <function>SetRebootToBootLoaderEntry()</function> requires
896 <interfacename>org.freedesktop.login1.set-reboot-to-boot-loader-entry</interfacename>.
899 <para><function>ScheduleShutdown()</function> and <function>CancelScheduledShutdown()</function> require
900 the same privileges (listed above) as the immediate poweroff/reboot/halt operations.</para>
902 <para><function>Inhibit()</function> is protected via one of
903 <interfacename>org.freedesktop.login1.inhibit-block-shutdown</interfacename>,
904 <interfacename>org.freedesktop.login1.inhibit-delay-shutdown</interfacename>,
905 <interfacename>org.freedesktop.login1.inhibit-block-sleep</interfacename>,
906 <interfacename>org.freedesktop.login1.inhibit-delay-sleep</interfacename>,
907 <interfacename>org.freedesktop.login1.inhibit-block-idle</interfacename>,
908 <interfacename>org.freedesktop.login1.inhibit-handle-power-key</interfacename>,
909 <interfacename>org.freedesktop.login1.inhibit-handle-suspend-key</interfacename>,
910 <interfacename>org.freedesktop.login1.inhibit-handle-hibernate-key</interfacename>,
911 <interfacename>org.freedesktop.login1.inhibit-handle-lid-switch</interfacename> depending on the lock
912 type and mode taken.</para>
914 <para>The <varname>interactive</varname> boolean parameters can be used to control whether polkit
915 should interactively ask the user for authentication credentials if required.</para>
920 <title>Seat Objects</title>
922 <programlisting executable="systemd-logind" node="/org/freedesktop/login1/seat/seat0" interface="org.freedesktop.login1.Seat">
923 node /org/freedesktop/login1/seat/seat0 {
924 interface org.freedesktop.login1.Seat {
927 ActivateSession(in s session_id);
932 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
933 readonly s Id = '...';
934 readonly (so) ActiveSession = ...;
935 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
936 readonly b CanTTY = ...;
937 readonly b CanGraphical = ...;
938 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
939 readonly a(so) Sessions = [...];
940 readonly b IdleHint = ...;
941 readonly t IdleSinceHint = ...;
942 readonly t IdleSinceHintMonotonic = ...;
944 interface org.freedesktop.DBus.Peer { ... };
945 interface org.freedesktop.DBus.Introspectable { ... };
946 interface org.freedesktop.DBus.Properties { ... };
950 <!--Autogenerated cross-references for systemd.directives, do not edit-->
952 <variablelist class="dbus-interface" generated="True" extra-ref="org.freedesktop.login1.Seat"/>
954 <variablelist class="dbus-interface" generated="True" extra-ref="org.freedesktop.login1.Seat"/>
956 <variablelist class="dbus-method" generated="True" extra-ref="Terminate()"/>
958 <variablelist class="dbus-method" generated="True" extra-ref="ActivateSession()"/>
960 <variablelist class="dbus-method" generated="True" extra-ref="SwitchTo()"/>
962 <variablelist class="dbus-method" generated="True" extra-ref="SwitchToNext()"/>
964 <variablelist class="dbus-method" generated="True" extra-ref="SwitchToPrevious()"/>
966 <variablelist class="dbus-property" generated="True" extra-ref="Id"/>
968 <variablelist class="dbus-property" generated="True" extra-ref="ActiveSession"/>
970 <variablelist class="dbus-property" generated="True" extra-ref="CanTTY"/>
972 <variablelist class="dbus-property" generated="True" extra-ref="CanGraphical"/>
974 <variablelist class="dbus-property" generated="True" extra-ref="Sessions"/>
976 <variablelist class="dbus-property" generated="True" extra-ref="IdleHint"/>
978 <variablelist class="dbus-property" generated="True" extra-ref="IdleSinceHint"/>
980 <variablelist class="dbus-property" generated="True" extra-ref="IdleSinceHintMonotonic"/>
982 <!--End of Autogenerated section-->
985 <title>Methods</title>
987 <para><function>Terminate()</function> and <function>ActivateSession()</function> work similarly to
988 <function>TerminateSeat()</function> and <function>ActivationSessionOnSeat()</function> on the Manager
991 <para><function>SwitchTo()</function> switches to the session on the virtual terminal
992 <varname>vtnr</varname>. <function>SwitchToNext()</function> and
993 <function>SwitchToPrevious()</function> switch to, respectively, the next and previous sessions on the
994 seat in the order of virtual terminals. If there is no active session, they switch to, respectively,
995 the first and last session on the seat.</para>
999 <title>Signals</title>
1001 <para>Whenever <function>ActiveSession</function>, <function>Sessions</function>,
1002 <function>CanGraphical</function>, <function>CanTTY</function>,
1003 or the idle state changes, <function>PropertyChanged</function> signals are sent out to which clients
1004 can subscribe.</para>
1008 <title>Properties</title>
1010 <para>The <varname>Id</varname> property encodes the ID of the seat.</para>
1012 <para><varname>ActiveSession</varname> encodes the currently active session if there is one. It is a
1013 structure consisting of the session id and the object path.</para>
1015 <para><varname>CanTTY</varname> encodes whether the session is suitable for text logins, and
1016 <varname>CanGraphical</varname> whether it is suitable for graphical sessions.</para>
1018 <para>The <varname>Sessions</varname> property is an array of all current sessions of this seat, each
1019 encoded in a structure consisting of the ID and the object path.</para>
1021 <para>The <varname>IdleHint</varname>, <varname>IdleSinceHint</varname>, and
1022 <varname>IdleSinceHintMonotonic</varname> properties encode the idle state, similarly to the ones
1023 exposed on the <interfacename>Manager</interfacename> object, but specific for this seat.</para>
1028 <title>User Objects</title>
1030 <programlisting executable="systemd-logind" node="/org/freedesktop/login1/user/_1000" interface="org.freedesktop.login1.User">
1031 node /org/freedesktop/login1/user/_1000 {
1032 interface org.freedesktop.login1.User {
1035 Kill(in i signal_number);
1037 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1038 readonly u UID = ...;
1039 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1040 readonly u GID = ...;
1041 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1042 readonly s Name = '...';
1043 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1044 readonly t Timestamp = ...;
1045 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1046 readonly t TimestampMonotonic = ...;
1047 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1048 readonly s RuntimePath = '...';
1049 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1050 readonly s Service = '...';
1051 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1052 readonly s Slice = '...';
1053 readonly (so) Display = ...;
1054 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
1055 readonly s State = '...';
1056 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
1057 readonly a(so) Sessions = [...];
1058 readonly b IdleHint = ...;
1059 readonly t IdleSinceHint = ...;
1060 readonly t IdleSinceHintMonotonic = ...;
1061 @org.freedesktop.DBus.Property.EmitsChangedSignal("false")
1062 readonly b Linger = ...;
1064 interface org.freedesktop.DBus.Peer { ... };
1065 interface org.freedesktop.DBus.Introspectable { ... };
1066 interface org.freedesktop.DBus.Properties { ... };
1070 <!--Autogenerated cross-references for systemd.directives, do not edit-->
1072 <variablelist class="dbus-interface" generated="True" extra-ref="org.freedesktop.login1.User"/>
1074 <variablelist class="dbus-interface" generated="True" extra-ref="org.freedesktop.login1.User"/>
1076 <variablelist class="dbus-method" generated="True" extra-ref="Terminate()"/>
1078 <variablelist class="dbus-method" generated="True" extra-ref="Kill()"/>
1080 <variablelist class="dbus-property" generated="True" extra-ref="UID"/>
1082 <variablelist class="dbus-property" generated="True" extra-ref="GID"/>
1084 <variablelist class="dbus-property" generated="True" extra-ref="Name"/>
1086 <variablelist class="dbus-property" generated="True" extra-ref="Timestamp"/>
1088 <variablelist class="dbus-property" generated="True" extra-ref="TimestampMonotonic"/>
1090 <variablelist class="dbus-property" generated="True" extra-ref="RuntimePath"/>
1092 <variablelist class="dbus-property" generated="True" extra-ref="Service"/>
1094 <variablelist class="dbus-property" generated="True" extra-ref="Slice"/>
1096 <variablelist class="dbus-property" generated="True" extra-ref="Display"/>
1098 <variablelist class="dbus-property" generated="True" extra-ref="State"/>
1100 <variablelist class="dbus-property" generated="True" extra-ref="Sessions"/>
1102 <variablelist class="dbus-property" generated="True" extra-ref="IdleHint"/>
1104 <variablelist class="dbus-property" generated="True" extra-ref="IdleSinceHint"/>
1106 <variablelist class="dbus-property" generated="True" extra-ref="IdleSinceHintMonotonic"/>
1108 <variablelist class="dbus-property" generated="True" extra-ref="Linger"/>
1110 <!--End of Autogenerated section-->
1113 <title>Methods</title>
1115 <para><function>Terminate()</function> and <function>Kill()</function> work similarly to the
1116 <function>TerminateUser()</function> and <function>KillUser()</function> methods on the manager
1121 <title>Signals</title>
1123 <para>Whenever <varname>Sessions</varname> or the idle state changes,
1124 <function>PropertyChanged</function> signals are sent out to which clients can subscribe.</para>
1128 <title>Properties</title>
1130 <para>The <varname>UID</varname> and <varname>GID</varname> properties encode the Unix UID and primary
1131 GID of the user.</para>
1133 <para>The <varname>Name</varname> property encodes the user name.</para>
1135 <para><varname>Timestamp</varname> and <varname>TimestampMonotonic</varname> encode the login time of
1136 the user in microseconds since the epoch, in the <constant>CLOCK_REALTIME</constant> and
1137 <constant>CLOCK_MONOTONIC</constant> clocks, respectively.</para>
1139 <para><varname>RuntimePath</varname> encodes the runtime path of the user,
1140 i.e. <varname>$XDG_RUNTIME_DIR</varname>. For details see the
1141 <ulink url="https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html">
1142 XDG Basedir Specification
1145 <para><varname>Service</varname> contains the unit name of the user systemd service of this
1146 user. Each logged in user is assigned a user service that runs a user systemd instance. This is
1147 usually an instance of <filename>user@.service</filename>.</para>
1149 <para><varname>Slice</varname> contains the unit name of the user systemd slice of this user. Each
1150 logged in user gets a private slice.</para>
1152 <para><varname>Display</varname> encodes which graphical session should be used as the primary UI display
1153 for the user. It is a structure encoding the session ID and the object path of the session to use.</para>
1155 <para><varname>State</varname> encodes the user state and is one of <literal>offline</literal>,
1156 <literal>lingering</literal>, <literal>online</literal>, <literal>active</literal>, or
1157 <literal>closing</literal>. See
1158 <citerefentry><refentrytitle>sd_uid_get_state</refentrytitle><manvolnum>3</manvolnum></citerefentry>
1159 for more information about the states.</para>
1161 <para><varname>Sessions</varname> is an array of structures encoding all current sessions of the
1162 user. Each structure consists of the ID and object path.</para>
1164 <para>The <varname>IdleHint</varname>, <varname>IdleSinceHint</varname>, and
1165 <varname>IdleSinceHintMonotonic</varname> properties encode the idle hint state of the user, similarly
1166 to the <interfacename>Manager</interfacename>'s properties, but specific for this user.</para>
1168 <para>The <varname>Linger</varname> property shows whether lingering is enabled for this user.</para>
1173 <title>Session Objects</title>
1175 <programlisting executable="systemd-logind" node="/org/freedesktop/login1/session/1" interface="org.freedesktop.login1.Session">
1176 node /org/freedesktop/login1/session/1 {
1177 interface org.freedesktop.login1.Session {
1183 SetIdleHint(in b idle);
1184 SetLockedHint(in b locked);
1186 in i signal_number);
1187 TakeControl(in b force);
1190 SetClass(in s class);
1191 SetDisplay(in s display);
1192 SetTTY(in h tty_fd);
1193 TakeDevice(in u major,
1197 ReleaseDevice(in u major,
1199 PauseDeviceComplete(in u major,
1201 SetBrightness(in s subsystem,
1205 PauseDevice(u major,
1208 ResumeDevice(u major,
1214 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1215 readonly s Id = '...';
1216 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1217 readonly (uo) User = ...;
1218 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1219 readonly s Name = '...';
1220 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1221 readonly t Timestamp = ...;
1222 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1223 readonly t TimestampMonotonic = ...;
1224 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1225 readonly u VTNr = ...;
1226 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1227 readonly (so) Seat = ...;
1228 readonly s TTY = '...';
1229 readonly s Display = '...';
1230 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1231 readonly b Remote = ...;
1232 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1233 readonly s RemoteHost = '...';
1234 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1235 readonly s RemoteUser = '...';
1236 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1237 readonly s Service = '...';
1238 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1239 readonly s Desktop = '...';
1240 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1241 readonly s Scope = '...';
1242 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1243 readonly u Leader = ...;
1244 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1245 readonly u Audit = ...;
1246 readonly s Type = '...';
1247 readonly s Class = '...';
1248 readonly b Active = ...;
1249 readonly s State = '...';
1250 readonly b IdleHint = ...;
1251 readonly t IdleSinceHint = ...;
1252 readonly t IdleSinceHintMonotonic = ...;
1253 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1254 readonly b CanIdle = ...;
1255 @org.freedesktop.DBus.Property.EmitsChangedSignal("const")
1256 readonly b CanLock = ...;
1257 readonly b LockedHint = ...;
1259 interface org.freedesktop.DBus.Peer { ... };
1260 interface org.freedesktop.DBus.Introspectable { ... };
1261 interface org.freedesktop.DBus.Properties { ... };
1265 <!--Autogenerated cross-references for systemd.directives, do not edit-->
1267 <variablelist class="dbus-interface" generated="True" extra-ref="org.freedesktop.login1.Session"/>
1269 <variablelist class="dbus-interface" generated="True" extra-ref="org.freedesktop.login1.Session"/>
1271 <variablelist class="dbus-method" generated="True" extra-ref="Terminate()"/>
1273 <variablelist class="dbus-method" generated="True" extra-ref="Activate()"/>
1275 <variablelist class="dbus-method" generated="True" extra-ref="Lock()"/>
1277 <variablelist class="dbus-method" generated="True" extra-ref="Unlock()"/>
1279 <variablelist class="dbus-method" generated="True" extra-ref="SetIdleHint()"/>
1281 <variablelist class="dbus-method" generated="True" extra-ref="SetLockedHint()"/>
1283 <variablelist class="dbus-method" generated="True" extra-ref="Kill()"/>
1285 <variablelist class="dbus-method" generated="True" extra-ref="TakeControl()"/>
1287 <variablelist class="dbus-method" generated="True" extra-ref="ReleaseControl()"/>
1289 <variablelist class="dbus-method" generated="True" extra-ref="SetType()"/>
1291 <variablelist class="dbus-method" generated="True" extra-ref="SetClass()"/>
1293 <variablelist class="dbus-method" generated="True" extra-ref="SetDisplay()"/>
1295 <variablelist class="dbus-method" generated="True" extra-ref="SetTTY()"/>
1297 <variablelist class="dbus-method" generated="True" extra-ref="TakeDevice()"/>
1299 <variablelist class="dbus-method" generated="True" extra-ref="ReleaseDevice()"/>
1301 <variablelist class="dbus-method" generated="True" extra-ref="PauseDeviceComplete()"/>
1303 <variablelist class="dbus-method" generated="True" extra-ref="SetBrightness()"/>
1305 <variablelist class="dbus-signal" generated="True" extra-ref="PauseDevice()"/>
1307 <variablelist class="dbus-signal" generated="True" extra-ref="ResumeDevice()"/>
1309 <variablelist class="dbus-signal" generated="True" extra-ref="Lock()"/>
1311 <variablelist class="dbus-signal" generated="True" extra-ref="Unlock()"/>
1313 <variablelist class="dbus-property" generated="True" extra-ref="Id"/>
1315 <variablelist class="dbus-property" generated="True" extra-ref="User"/>
1317 <variablelist class="dbus-property" generated="True" extra-ref="Name"/>
1319 <variablelist class="dbus-property" generated="True" extra-ref="Timestamp"/>
1321 <variablelist class="dbus-property" generated="True" extra-ref="TimestampMonotonic"/>
1323 <variablelist class="dbus-property" generated="True" extra-ref="VTNr"/>
1325 <variablelist class="dbus-property" generated="True" extra-ref="Seat"/>
1327 <variablelist class="dbus-property" generated="True" extra-ref="TTY"/>
1329 <variablelist class="dbus-property" generated="True" extra-ref="Display"/>
1331 <variablelist class="dbus-property" generated="True" extra-ref="Remote"/>
1333 <variablelist class="dbus-property" generated="True" extra-ref="RemoteHost"/>
1335 <variablelist class="dbus-property" generated="True" extra-ref="RemoteUser"/>
1337 <variablelist class="dbus-property" generated="True" extra-ref="Service"/>
1339 <variablelist class="dbus-property" generated="True" extra-ref="Desktop"/>
1341 <variablelist class="dbus-property" generated="True" extra-ref="Scope"/>
1343 <variablelist class="dbus-property" generated="True" extra-ref="Leader"/>
1345 <variablelist class="dbus-property" generated="True" extra-ref="Audit"/>
1347 <variablelist class="dbus-property" generated="True" extra-ref="Type"/>
1349 <variablelist class="dbus-property" generated="True" extra-ref="Class"/>
1351 <variablelist class="dbus-property" generated="True" extra-ref="Active"/>
1353 <variablelist class="dbus-property" generated="True" extra-ref="State"/>
1355 <variablelist class="dbus-property" generated="True" extra-ref="IdleHint"/>
1357 <variablelist class="dbus-property" generated="True" extra-ref="IdleSinceHint"/>
1359 <variablelist class="dbus-property" generated="True" extra-ref="IdleSinceHintMonotonic"/>
1361 <variablelist class="dbus-property" generated="True" extra-ref="CanIdle"/>
1363 <variablelist class="dbus-property" generated="True" extra-ref="CanLock"/>
1365 <variablelist class="dbus-property" generated="True" extra-ref="LockedHint"/>
1367 <!--End of Autogenerated section-->
1370 <title>Methods</title>
1372 <para><function>Terminate()</function>, <function>Activate()</function>, <function>Lock()</function>,
1373 <function>Unlock()</function>, and <function>Kill()</function> work similarly to the respective calls on
1374 the <interfacename>Manager</interfacename> object.</para>
1376 <para><function>SetIdleHint()</function> is called by the session object to update the idle state
1377 of the session whenever it changes.</para>
1379 <para><function>TakeControl()</function> allows a process to take exclusive managed device
1380 access-control for that session. Only one D-Bus connection can be a controller for a given session at any
1381 time. If the <varname>force</varname> argument is set (root only), an existing controller is kicked
1382 out and replaced. Otherwise, this method fails if there is already a controller. Note that this method is
1383 limited to D-Bus users with the effective UID set to the user of the session or root.</para>
1385 <para><function>ReleaseControl()</function> drops control of a given session. Closing the D-Bus
1386 connection implicitly releases control as well. See <function>TakeControl()</function> for more
1387 information. This method also releases all devices for which the controller requested ownership via
1388 <function>TakeDevice()</function>.</para>
1390 <para><function>SetType()</function> allows the type of the session to be changed dynamically. It can
1391 only be called by session's current controller. If <function>TakeControl()</function> has not been
1392 called, this method will fail. In addition, the session type will be reset to its original value once
1393 control is released, either by calling <function>ReleaseControl()</function> or closing the D-Bus
1394 connection. This should help prevent a session from entering an inconsistent state, for example if the
1395 controller crashes. The only argument <varname>type</varname> is the new session type.</para>
1397 <para><function>SetClass()</function> allows the caller to change the class of the session dynamically.
1398 It may only be called by session's owening user. Currently, this call may be exclusively used to change
1399 the class from <literal>user-incomplete</literal> to <literal>user</literal>. The call is synchronous,
1400 and will return only once the user's service manager has successfully been started, if necessary. The
1401 only argument <varname>type</varname> is the new session type.</para>
1403 <para><function>SetDisplay()</function> allows the display name of the graphical session to be changed. This is
1404 useful if the display server is started as part of the session. It can only be called by session's current
1405 controller. If <function>TakeControl()</function> has not been called, this method will fail. The only argument
1406 <varname>display</varname> is the new display name.</para>
1408 <para><function>SetTTY()</function> allows the device name of the session to be changed. This is
1409 useful if the tty device is only known after authentication. It can only be called by session's
1410 current controller. If <function>TakeControl()</function> has not been called, this method will fail.
1411 The only argument <varname>tty_fd</varname> is a file handle to the new tty device.</para>
1413 <para><function>TakeDevice()</function> allows a session controller to get a file descriptor for a
1414 specific device. Pass in the major and minor numbers of the character device and
1415 <filename>systemd-logind</filename> will return a file descriptor for the device. Only a limited set of
1416 device-types is currently supported (but may be extended). <filename>systemd-logind</filename>
1417 automatically mutes the file descriptor if the session is inactive and resumes it once the session is
1418 activated again. This guarantees that a session can only access session devices if the session is
1419 active. Note that this revoke/resume mechanism is asynchronous and may happen at any given time. This
1420 only works on devices that are attached to the seat of the given session. A process is not required to
1421 have direct access to the device node. <filename>systemd-logind</filename> only requires you to be the
1422 active session controller (see <function>TakeControl()</function>). Also note that any device can only
1423 be requested once. As long as you do not release it, further <function>TakeDevice()</function> calls
1426 <para><function>ReleaseDevice()</function> releases a device again (see
1427 <function>TakeDevice()</function>). This is also implicitly done by
1428 <function>ReleaseControl()</function> or when closing the D-Bus connection.</para>
1430 <para><function>PauseDeviceComplete()</function> allows a session controller to synchronously pause a
1431 device after receiving a <function>PauseDevice(<literal>pause</literal>)</function> signal. Forced
1432 signals (or after an internal timeout) are automatically completed by
1433 <filename>systemd-logind</filename> asynchronously.</para>
1435 <para><function>SetLockedHint()</function> may be used to set the "locked hint" to
1436 <varname>locked</varname>, i.e. information whether the session is locked. This is intended to be used
1437 by the desktop environment to tell <command>systemd-logind</command> when the session is locked and
1440 <para><function>SetBrightness()</function> may be used to set the display brightness. This is intended
1441 to be used by the desktop environment and allows unprivileged programs to access hardware settings in
1442 a controlled way. The <varname>subsystem</varname> parameter specifies a kernel subsystem, either
1443 <literal>backlight</literal> or <literal>leds</literal>. The <varname>name</varname> parameter
1444 specifies a device name under the specified subsystem. The <varname>brightness</varname> parameter
1445 specifies the brightness. The range is defined by individual drivers, see
1446 <filename>/sys/class/<varname>subsystem</varname>/<varname>name</varname>/max_brightness</filename>.
1451 <title>Signals</title>
1453 <para>The active session controller exclusively gets <function>PauseDevice()</function> and
1454 <function>ResumeDevice()</function> events for any device it requested via
1455 <function>TakeDevice()</function>. They notify the controller whenever a device is paused or resumed. A
1456 device is never resumed if its session is inactive. Also note that <function>PauseDevice()</function>
1457 signals are sent before the <function>PropertyChanged</function> signal for the
1458 <function>Active</function> state. The inverse is true for <function>ResumeDevice()</function>. A device
1459 may remain paused for unknown reasons even though the <interfacename>Session</interfacename> is active.
1462 <para>A <function>PauseDevice()</function> signal carries the major and minor numbers and a string describing the
1463 type as arguments. <function>force</function> means the device was already paused by
1464 <filename>systemd-logind</filename> and the signal is only an asynchronous
1465 notification. <function>pause</function> means <filename>systemd-logind</filename> grants you a limited amount of time to pause the device. You must respond to this via
1466 <function>PauseDeviceComplete()</function>. This synchronous pausing mechanism is used for
1467 backwards-compatibility to VTs and <filename>systemd-logind</filename> is free to not make use of
1468 it. It is also free to send a forced <function>PauseDevice()</function> if you do not respond in a timely
1469 manner (or for any other reason). <function>gone</function> means the device was unplugged from the
1470 system and you will no longer get any notifications about it. There is no need to call
1471 <function>ReleaseDevice()</function>. You may call <function>TakeDevice()</function> again if a new
1472 device is assigned the major+minor combination.</para>
1474 <para><function>ResumeDevice()</function> is sent whenever a session is active and a device is
1475 resumed. It carries the major/minor numbers as arguments and provides a new open file descriptor. You should
1476 switch to the new descriptor and close the old one. They are not guaranteed to have the same underlying
1477 open file descriptor in the kernel (except for a limited set of device types).</para>
1479 <para>Whenever <function>Active</function> or the idle state changes,
1480 <function>PropertyChanged</function> signals are sent out to which clients can subscribe.</para>
1482 <para><function>Lock()</function>/<function>Unlock()</function> is sent when the session is asked to be
1483 screen-locked/unlocked. A session manager of the session should listen to this signal and act
1484 accordingly. This signal is sent out as a result of the <function>Lock()</function> and
1485 <function>Unlock()</function> methods, respectively.</para>
1489 <title>Properties</title>
1491 <para><varname>Id</varname> encodes the session ID.</para>
1493 <para><varname>User</varname> encodes the user ID of the user this session belongs to. This is a
1494 structure consisting of the Unix UID and the object path.</para>
1496 <para><varname>Name</varname> encodes the user name.</para>
1498 <para><varname>Timestamp</varname> and <varname>TimestampMonotonic</varname> encode the microseconds
1499 since the epoch when the session was created, in <constant>CLOCK_REALTIME</constant> or
1500 <constant>CLOCK_MONOTONIC</constant>, respectively.</para>
1502 <para><varname>VTNr</varname> encodes the virtual terminal number of the session if there is any, 0
1505 <para><varname>Seat</varname> encodes the seat this session belongs to if there is any. This is a
1506 structure consisting of the ID and the seat object path.</para>
1508 <para><varname>TTY</varname> encodes the kernel TTY path of the session if this is a text login. If not
1509 this is an empty string.</para>
1511 <para><varname>Display</varname> encodes the X11 display name if this is a graphical login. If not,
1512 this is an empty string.</para>
1514 <para><varname>Remote</varname> encodes whether the session is local or remote.</para>
1516 <para><varname>RemoteHost</varname> and <varname>RemoteUser</varname> encode the remote host and user
1517 if this is a remote session, or an empty string otherwise.</para>
1519 <para><varname>Service</varname> encodes the PAM service name that registered the session.</para>
1521 <para><varname>Desktop</varname> describes the desktop environment running in the session (if
1524 <para><varname>Scope</varname> contains the systemd scope unit name of this session.</para>
1526 <para><varname>Leader</varname> encodes the PID of the process that registered the session.</para>
1528 <para><varname>Audit</varname> encodes the Kernel Audit session ID of the session if auditing is
1531 <para><varname>Type</varname> encodes the session type. It's one of <literal>unspecified</literal> (for
1532 cron PAM sessions and suchlike), <literal>tty</literal> (for text logins), <literal>web</literal> (for
1533 web-based logins), or <literal>x11</literal>/<literal>mir</literal>/<literal>wayland</literal> (for
1534 graphical logins).</para>
1536 <para><varname>Class</varname> encodes the session class. It's one of <literal>user</literal> (for
1537 normal user sessions), <literal>greeter</literal> (for display manager pseudo-sessions), or
1538 <literal>lock-screen</literal> (for display lock screens).</para>
1540 <para><varname>Active</varname> is a boolean that is true if the session is active, i.e. currently in the
1541 foreground. This field is semi-redundant due to <varname>State</varname>.</para>
1543 <para><varname>State</varname> encodes the session state and one of <literal>online</literal>,
1544 <literal>active</literal>, or <literal>closing</literal>. See
1545 <citerefentry><refentrytitle>sd_session_get_state</refentrytitle><manvolnum>3</manvolnum></citerefentry>
1546 for more information about the states.</para>
1548 <para><varname>IdleHint</varname>, <varname>IdleSinceHint</varname>, and
1549 <varname>IdleSinceHintMonotonic</varname> encapsulate the idle hint state of this session, similarly to
1550 how the respective properties on the manager object do it for the whole system.</para>
1552 <para><varname>LockedHint</varname> shows the locked hint state of this session, as set by the
1553 <function>SetLockedHint()</function> method described above.</para>
1555 <para><varname>CanIdle</varname> indicates whether the session supports the idle hint
1556 concept. Similarly, <varname>CanLock</varname> indicates whether the session supports the screen lock
1562 <title>Examples</title>
1565 <title>Introspect the logind manager on the bus</title>
1567 <programlisting>$ gdbus introspect --system --dest org.freedesktop.login1 \
1568 --object-path /org/freedesktop/login1
1573 <programlisting>$ busctl introspect org.freedesktop.login1 /org/freedesktop/login1
1578 <title>Introspect the default seat on the bus</title>
1580 <programlisting>$ gdbus introspect --system --dest org.freedesktop.login1 \
1581 --object-path /org/freedesktop/login1/seat/seat0
1586 <programlisting>$ busctl introspect org.freedesktop.login1 /org/freedesktop/login1/seat/seat0
1589 <para>Seat <literal>seat0</literal> is the default seat, so it'll be present unless local configuration
1590 is made to reassign all devices to a different seat. The list of seats and users can be acquired with
1591 <command>loginctl list-sessions</command>.</para>
1595 <title>Introspect a single user on the bus</title>
1597 <programlisting>$ gdbus introspect --system --dest org.freedesktop.login1 \
1598 --object-path /org/freedesktop/login1/user/_1000
1603 <programlisting>$ busctl introspect org.freedesktop.login1 /org/freedesktop/login1/user/_1000
1608 <title>Introspect <interfacename>org.freedesktop.login1.Session</interfacename> on the bus</title>
1610 <programlisting>$ gdbus introspect --system --dest org.freedesktop.login1 \
1611 --object-path /org/freedesktop/login1/session/45
1616 <programlisting>$ busctl introspect org.freedesktop.login1 /org/freedesktop/login1/session/45
1621 <xi:include href="org.freedesktop.locale1.xml" xpointer="versioning"/>
1624 <title>History</title>
1626 <title>The Manager Object</title>
1627 <para><varname>HandlePowerKeyLongPress</varname>,
1628 <varname>HandleRebootKey</varname>,
1629 <varname>HandleRebootKeyLongPress</varname>,
1630 <varname>HandleSuspendKeyLongPress</varname>, and
1631 <varname>HandleHibernateKeyLongPress</varname> were added in version 251.</para>
1632 <para><varname>StopIdleSessionUSec</varname> was added in version 252.</para>
1633 <para><function>PrepareForShutdownWithMetadata()</function> and
1634 <function>CreateSessionWithPIDFD()</function> were added in version 255.</para>
1635 <para><function>Sleep()</function>,
1636 <function>CanSleep()</function>,
1637 <varname>SleepOperation</varname>, and
1638 <function>ListSessionsEx()</function> were added in version 256.</para>
1639 <para><varname>HandleSecureAttentionKey</varname>, <function>SecureAttentionKey()</function>,
1640 <varname>PreparingForShutdownWithMetadata</varname>, <varname>DesignatedMaintenanceTime</varname>,
1641 <varname>CanIdle</varname>, <varname>CanLock</varname>,
1642 and <varname>BlockWeakInhibited</varname> were added in version 257.</para>
1645 <title>Session Objects</title>
1646 <para><function>SetDisplay()</function> was added in version 252.</para>
1647 <para><function>SetTTY()</function> was added in version 254.</para>
1648 <para><function>SetClass()</function> was added in version 256.</para>
1653 <title>See Also</title>
1654 <para><simplelist type="inline">
1655 <member><citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
1656 <member><citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry></member>
1657 <member><citerefentry><refentrytitle>loginctl</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
1658 </simplelist></para>