int redisIsSupervised(int mode) {
    if (mode == SUPERVISED_AUTODETECT) {
        const char *upstart_job = getenv("UPSTART_JOB");
        const char *notify_socket = getenv("NOTIFY_SOCKET");

        if (upstart_job) {
            redisSupervisedUpstart();
        } else if (notify_socket) {
            redisSupervisedSystemd();
        }
    } else if (mode == SUPERVISED_UPSTART) {
        return redisSupervisedUpstart();
    } else if (mode == SUPERVISED_SYSTEMD) {
        return redisSupervisedSystemd();
    }

    return 0;
}

This label identifies security gaps where expected security features are missing or only partially implemented, reducing protection against unauthorized access or manipulation.