SF_PLUGGED
sc->sc_flags = SF_PLUGGED | SF_CONSOLE | SF_ENABLED;
sc->sc_flags = SF_PLUGGED;
SET(sc->sc_flags, SF_PLUGGED);
CLR(sc->sc_flags, SF_PLUGGED);
if (!ISSET(sc->sc_flags, SF_PLUGGED))
if (!ISSET(sc->sc_flags, SF_PLUGGED))