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

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

SYSTEMD-LOGIND.SERVICE(8)  systemd-logind.service  SYSTEMD-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 2020-11-01.  (At that
       time, the date of the most recent commit that was found in the repos‐
       itory was 2020-11-01.)  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 im‐
       provements 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)

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