check_shash_op
err = check_shash_op("init", err, driver, vec_name, cfg);
err = check_shash_op("finup", err, driver, vec_name,
err = check_shash_op("update", err, driver, vec_name, cfg);
err = check_shash_op("export", err, driver, vec_name,
err = check_shash_op("import", err, driver, vec_name,
err = check_shash_op("final", err, driver, vec_name, cfg);