PK_CLDSIGIGN
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);
PK_CLDSIGIGN, P_CLDSIGIGN,
p->p_flag &= ~(PK_NOCLDWAIT | PK_CLDSIGIGN);
p->p_flag &= ~PK_CLDSIGIGN;
p->p_flag |= PK_CLDSIGIGN;
p->p_flag &= ~PK_CLDSIGIGN;