systemd-logind.service, systemd-logind - Login manager
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-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. If you are interested in writing a display manager that makes use of logind, please have look at Writing Display Managers. If you are interested in writing a desktop environment that makes use of logind, please have look at Writing Desktop Environments.
systemd(1), systemd-user-sessions.service(8), loginctl(1), logind.conf(5), pam_systemd(8), sd-login(3)
1. polkit https://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 https://www.freedesktop.org/wiki/Software/systemd/writing-desktop-environments
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 2022-12-17. (At that time, the date of the most recent commit that was found in the repository was 2022-12-16.) 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 email@example.com systemd 252 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)