__ham_lookup
if ((ret = __ham_lookup(dbc, key, 0, DB_LOCK_WRITE)) == 0)
ret = __ham_lookup(dbc, key, 0, lock_type);
if ((ret = __ham_lookup(dbc,
static int __ham_lookup __P((DBC *, const DBT *, u_int32_t, db_lockmode_t));