#define DEVNULL_FLAGGED(hi, tok) ((hi)->modes & DEVNULL_##tok)
#define DEVNULL_SET_FLAG(hi, tok) ((hi)->modes |= DEVNULL_##tok)
#define DEVNULL_FLAGGED(hi, tok) ((hi)->modes & DEVNULL_##tok)
#define DEVNULL_SET_FLAG(hi, tok) ((hi)->modes |= DEVNULL_##tok)