systemd-logind.service(8) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | NOTES | COLOPHON

SYSTEMD-LOGIND.SERVICE(8)systemd-logind.serviceSYSTEMD-LOGIND.SERVICE(8)

NAME         top

       systemd-logind.service, systemd-logind - Login manager

SYNOPSIS         top

       systemd-logind.service

       /usr/lib/systemd/systemd-logind

DESCRIPTION         top

       systemd-logind is a system service that manages user logins. It
       is responsible for:

       •   Keeping track of users and sessions, their processes and
           their idle state. This is implemented by allocating a systemd
           slice unit for each user below user.slice, and a scope unit
           below it for each concurrent session of a user. Also, a
           per-user service manager is started as system service
           instance of user@.service for each logged in user.

       •   Generating and managing session IDs. If auditing is available
           and an audit session ID is already set for a session, then
           this ID is reused as the session ID. Otherwise, an
           independent session counter is used.

       •   Providing polkit[1]-based access for users for operations
           such as system shutdown or sleep

       •   Implementing a shutdown/sleep inhibition logic for
           applications

       •   Handling of power/sleep hardware keys

       •   Multi-seat management

       •   Session switch management

       •   Device access management for users

       •   Automatic spawning of text logins (gettys) on virtual console
           activation and user runtime directory management

       User sessions are registered with logind via the pam_systemd(8)
       PAM module.

       See logind.conf(5) for information about the configuration of
       this service.

       See sd-login(3) for information about the basic concepts of
       logind such as users, sessions and seats.

       See org.freedesktop.login1(5) and org.freedesktop.LogControl1(5)
       for information about the D-Bus APIs systemd-logind provides.

       For more information on the inhibition logic see the Inhibitor
       Lock Developer Documentation[2].

       If you are interested in writing a display manager that makes use
       of logind, please have look at Writing Display Managers[3]. If
       you are interested in writing a desktop environment that makes
       use of logind, please have look at Writing Desktop
       Environments[4].

SEE ALSO         top

       systemd(1), systemd-user-sessions.service(8), loginctl(1),
       logind.conf(5), pam_systemd(8), sd-login(3)

NOTES         top

        1. polkit
           http://www.freedesktop.org/wiki/Software/polkit

        2. Inhibitor Lock Developer Documentation
           https://www.freedesktop.org/wiki/Software/systemd/inhibit

        3. Writing Display Managers
           https://www.freedesktop.org/wiki/Software/systemd/writing-display-managers

        4. Writing Desktop Environments
           http://www.freedesktop.org/wiki/Software/systemd/writing-desktop-environments

COLOPHON         top

       This page is part of the systemd (systemd system and service
       manager) project.  Information about the project can be found at
       ⟨http://www.freedesktop.org/wiki/Software/systemd⟩.  If you have
       a bug report for this manual page, see
       ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.
       This page was obtained from the project's upstream Git repository
       ⟨https://github.com/systemd/systemd.git⟩ on 2020-12-18.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2020-12-18.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

systemd 247                                    SYSTEMD-LOGIND.SERVICE(8)

Pages that refer to this page: loginctl(1)sd_bus_creds_get_pid(3)sd-login(3)logind.conf(5)org.freedesktop.login1(5)systemd.slice(5)user@.service(5)systemd.directives(7)systemd.index(7)systemd.special(7)pam_systemd(8)systemd-machined.service(8)systemd-user-sessions.service(8)