NAME
systemd-logind.service, systemd-logind - Login managerSYNOPSIS
systemd-logind.service /lib/systemd/systemd-logindDESCRIPTION
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 [email protected] 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
•Scheduled shutdown
•Sending "wall"
messages
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
- 2.
- Inhibitor Lock Developer Documentation
- 3.
- Writing Display Managers
- 4.
- Writing Desktop Environments
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