NOTE_EXEC
KASSERT((hint & (NOTE_EXEC | NOTE_EXIT | NOTE_FORK)) == 0);
fflags = (kn->kn_fflags |= (kn->kn_sfflags & NOTE_EXEC));
event[0].fflags = NOTE_EXIT | NOTE_FORK | NOTE_EXEC; /* | NOTE_TRACK;*/
want = NOTE_EXIT | NOTE_FORK | NOTE_EXEC;
if (event[0].fflags & NOTE_EXEC) {
want &= ~NOTE_EXEC;