ndmpd_save_env
extern ndmp_error ndmpd_save_env(ndmpd_session_t *,
err = ndmpd_save_env(session, env_val, env_len);
reply.error = ndmpd_save_env(session, env_val, env_len);
err = ndmpd_save_env(session, env_val, env_len);
if ((err = ndmpd_save_env(session, env_val, env_len)) != NDMP_NO_ERR)
reply.error = ndmpd_save_env(session, env_val, env_len);