i_devname_to_promname
error = i_devname_to_promname(cf->cf_devfs, devpath,
error = i_devname_to_promname(cf->cf_devfs, devpath, OBP_MAXPATHLEN);
error = i_devname_to_promname(opp->oprom_array, prom_name,
extern int i_devname_to_promname(char *dev_name, char *ret_buf, size_t);
rval = i_devname_to_promname(cur_path, new_path, *len);