Module wayland_protocols::ext::session_lock
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This protocol allows for a privileged Wayland client to lock the session and display arbitrary graphics while the session is locked.
The compositor may choose to restrict this protocol to a special client launched by the compositor itself or expose it to all privileged clients, this is compositor policy.
The client is responsible for performing authentication and informing the compositor when the session should be unlocked. If the client dies while the session is locked the session remains locked, possibly permanently depending on compositor policy.