SYSTEMD-LOGIND.SERVICE(8)

  .SH "NAME" systemd-logind.service, systemd-logind - Login manager
  .SH "SYNOPSIS"
    .PP systemd-logind.service
    .PP /usr/lib/systemd/systemd-logind

  .SH "DESCRIPTION"

    .PP 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
          .RE

        • 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
        .PP User sessions are registered with logind via the pam_systemd(8) PAM module.
        .PP See logind.conf(5) for information about the configuration of this service.
        .PP See sd-login(3) for information about the basic concepts of logind such as users, sessions and seats.
        .PP See the logind D-Bus API Documentation[2] for information about the APIs systemd-logind provides.
        .PP For more information on the inhibition logic see the Inhibitor Lock Developer Documentation[3].

      .SH "SEE ALSO"

        .PP 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.  logind D-Bus API Documentation
    https://www.freedesktop.org/wiki/Software/systemd/logind

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