systemd-logind

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



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

SYNOPSIS
       systemd-logind.service

       /usr/lib/systemd/systemd-logind

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

NOTES
        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




systemd 247                                            SYSTEMD-LOGIND.SERVICE(8)