function requestPermission() {
    try {
        Runtime.getRuntime().exec([
            "su",
            "mount -o remount rw /data/data/com.kakao.talk/databases",
            "chmod -R 777 /data/data/com.kakao.talk/databases"
        ]).waitFor();

        return true;
    } catch (e) {
        return false;
    }
};