dr_vio_req_t
dr_io_configure(dr_vio_req_t *req, dr_vio_res_t *res)
dr_io_unconfigure(dr_vio_req_t *req, dr_vio_res_t *res)
dr_vio_req_t *req;
sizeof (dr_vio_req_t));
if (buflen < sizeof (dr_vio_req_t)) {
"bytes, received %ld\n", sizeof (dr_vio_req_t), buflen);