orgfreedesktoplogin1

org.freedesktop.login1 is a D-Bus service name used on Linux systems to expose login management functionality to applications and system services. It is implemented by systemd-logind and forms part of the freedesktop.org standards for session and seat management. The service provides information about active user logins, seats, and sessions, and offers operations to manage them in a centralized, cross-distribution way.

The main D-Bus object path is /org/freedesktop/login1, which exposes interfaces such as org.freedesktop.login1.Manager for system-wide operations and per-session objects at /org/freedesktop/login1/session/ID that implement org.freedesktop.login1.Session. Through these interfaces, clients can query current sessions and seats, monitor changes in session state, and inquire about or influence session lifecycle within the bounds permitted by the system’s policy framework.

Authorization is typically enforced via PolicyKit, so actions that affect the system or other users—such as powering off, suspending, or terminating a session—require appropriate privileges. The interface is designed to provide a stable, standardized API for interacting with login state, enabling desktop environments, display managers, and other components to coordinate session handling and access to devices like input, audio, and power management.

Historically, login1 serves as a modern replacement for older frameworks such as ConsoleKit and is widely adopted across Linux distributions that use systemd. See also: systemd-logind, ConsoleKit, D-Bus, PolicyKit.