val await_shutdown_request : ?can_poweroff:bool -> ?can_reboot:bool -> unit -> [ `Poweroff | `Reboot ] Lwt.tawait_shutdown_request () is thread that resolves when the domain is asked to shut down. The optional poweroff (default:true) and reboot (default:false) arguments can be used to indicate which features the caller wants to advertise (however, you can still get a request for a mode you didn't claim to support).