rctl_set_dup
cp->p_rctls = rctl_set_dup(p->p_rctls, p, cp, &e, dup_set, dup_gp,
tk->tk_rctls = rctl_set_dup(ancestor_tk->tk_rctls, curproc, curproc, &e,
(void) rctl_set_dup(NULL, NULL, p, &e, tk->tk_rctls, NULL,
(void) rctl_set_dup(NULL, NULL, pp, &e, zone->zone_rctls, NULL,
rctl_set_t *rctl_set_dup(rctl_set_t *, struct proc *, struct proc *,