DUP_INPROGRESS
dr->dr_status = DUP_INPROGRESS;
case DUP_INPROGRESS:
case DUP_INPROGRESS:
dr->dr_status = DUP_INPROGRESS;
while (dr->dr_status == DUP_INPROGRESS) {
dr->dr_status = DUP_INPROGRESS;
dr->dr_status = DUP_INPROGRESS;
while (dr->dr_status == DUP_INPROGRESS) {
dr->dr_status = DUP_INPROGRESS;
dr->dr_status = DUP_INPROGRESS;
while (dr->dr_status == DUP_INPROGRESS) {
dr->dr_status = DUP_INPROGRESS;