mdb_tdb_lib_t
t = mdb_alloc(sizeof (mdb_tdb_lib_t), UM_SLEEP);
mdb_tdb_lib_t *t, *u;
mdb_free(t, sizeof (mdb_tdb_lib_t));
static mdb_tdb_lib_t *tdb_list;
mdb_tdb_lib_t *t;