__yp_master_rsvdport
err = __yp_master_rsvdport(domain, map, &master);
err = __yp_master_rsvdport(domain, pmpl->ypml_name, &master);
if (err = __yp_master_rsvdport(source, map, &master)) {
rsvdreason = __yp_master_rsvdport(domain, map, master);
extern int __yp_master_rsvdport(char *, char *, char **);