parse_btl
rv = parse_btl(argv[2], &bus, &target, &lun, &arglist);
static int parse_btl(char *tstr, path_id_t *bus, target_id_t *target,
rv = parse_btl(argv[optind], &bus, &target, &lun, &arglist);
rv = parse_btl(tstr, &bus, &target, &lun, &arglist);
rv = parse_btl(io_opts[i].dev_name, &bus,
static int parse_btl(char *tstr, int *bus, int *target, int *lun);