PS_CLDSIGIGN
if (p->p_pptr->p_sigacts->ps_flag & (PS_NOCLDWAIT | PS_CLDSIGIGN)) {
ps->ps_flag |= PS_CLDSIGIGN;
ps->ps_flag &= ~PS_CLDSIGIGN;
p->p_sigacts->ps_flag &= ~(PS_NOCLDWAIT | PS_CLDSIGIGN);