PK_NOCLDWAIT
p1->p_flag & (PK_SUGID | PK_NOCLDWAIT | PK_CLDSIGIGN | PK_32);
if (old_parent->p_flag & (PK_NOCLDWAIT|PK_CLDSIGIGN)) {
p1->p_flag & (PK_SUGID | PK_NOCLDWAIT | PK_CLDSIGIGN | PK_32);
p2->p_flag |= (PK_SYSTEM | PK_NOCLDWAIT);
PK_NOCLDWAIT, P_NOCLDWAIT,
.p_flag = PK_SYSTEM | PK_NOCLDWAIT,
p->p_flag &= ~(PK_NOCLDWAIT | PK_CLDSIGIGN);
p->p_flag &= ~PK_NOCLDWAIT;
p->p_flag |= PK_NOCLDWAIT;
p->p_flag &= ~PK_NOCLDWAIT;