mdb_name_to_major
extern int mdb_name_to_major(const char *, major_t *);
if (mdb_name_to_major(argv->a_un.a_str, &major) != 0) {
if (mdb_name_to_major(arg->a_un.a_str, &major) != 0) {
if (mdb_name_to_major(bind_name, &major) == -1) {