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



NAME         top

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

SYNOPSIS         top



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

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

       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

        2. Inhibitor Lock Developer Documentation

        3. Writing Display Managers

        4. 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 
       ⟨⟩.  If you have a bug
       report for this manual page, see
       ⟨⟩.  This
       page was obtained from the project's upstream Git repository
       ⟨⟩ 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

systemd 247                                        SYSTEMD-LOGIND.SERVICE(8)

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