SCFLAG_OREAD
#define SCFLAG_OPEN (SCFLAG_OREAD|SCFLAG_OWRITE)
sc->sc_flags |= SCFLAG_OREAD;
sc->sc_flags &= ~SCFLAG_OREAD;
#define SCFLAG_OPEN (SCFLAG_OREAD|SCFLAG_OWRITE)
sc->sc_flags |= SCFLAG_OREAD;
sc->sc_flags &= ~SCFLAG_OREAD;
(sc->sc_flags & (SCFLAG_OREAD|SCFLAG_OWRITE)) == 0)
sc->sc_flags |= SCFLAG_OREAD;
sc->sc_flags &= ~SCFLAG_OREAD;
#define SCFLAG_OPEN (SCFLAG_OREAD|SCFLAG_OWRITE)
(sc->sc_flags & (SCFLAG_OREAD|SCFLAG_OWRITE)) == 0)
sc->sc_flags |= SCFLAG_OREAD;
#define SCFLAG_OPEN (SCFLAG_OREAD|SCFLAG_OWRITE)
sc->sc_flags &= ~SCFLAG_OREAD;