DSTATE
if (inoinfo(ino)->ino_state == DSTATE) {
#define S_IS_DUNFOUND(state) (((state) & ~0x1) == DSTATE)
#define S_IS_DVALID(state) (((state) & ~0x3) == DSTATE)
case DSTATE:
inoinfo(ino)->ino_state = DSTATE;
inoinfo(inumber)->ino_state = DSTATE;
case DSTATE:
(DIP(dp, di_mode) & IFMT) == IFDIR ? DSTATE : FSTATE;
case DSTATE:
case DSTATE:
case DSTATE: