HelenOS sources

SERVICE_LOADER     78 uspace/lib/c/generic/loader.c 	    service_connect_blocking(SERVICE_LOADER, INTERFACE_LOADER, 0, rc);
SERVICE_LOADER    441 uspace/srv/loader/main.c 	rc = service_register(SERVICE_LOADER, INTERFACE_LOADER,
SERVICE_LOADER     65 uspace/srv/ns/clonable.c 	return (service == SERVICE_LOADER) && (iface == INTERFACE_LOADER);
HelenOS homepage, sources at GitHub