What is the purpose of the systemd-logind daemon?

blackrhino

Also see: systemd-logind.service(8), systemd-logind(8) - Login manager

From the man page:

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 PolicyKit-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