NOTE_OOB
int evff = forcehup ? 0 : NOTE_OOB;
static const int evff[] = { 0, 0, NOTE_OOB };
if (kn->kn_sfflags & NOTE_OOB) {
kn->kn_fflags |= NOTE_OOB;
if (kn->kn_sfflags & NOTE_OOB) {
kn->kn_fflags |= NOTE_OOB;