Some files couldn't be listed by using QDir

// qfilesystemiterator_unix.cpp
bool QFileSystemIterator::advance(QFileSystemEntry &fileEntry, QFileSystemMetaData &metaData)
{
    if (!dir)
        return false;    for (;;) {
        dirEntry = QT_READDIR(dir);        if (dirEntry) {
            // process entries with correct UTF-8 names only
            // this condition is added by purpose, and it cause this problem i mentioned, i'm wondering if it is too rude to filter files here? maybe you should give a flag or something that i can manage wether to filter it by my self. this is the reason why i cannot iterator the files which have some codec error.
            if (QFile::encodeName(QFile::decodeName(dirEntry->d_name)) == dirEntry->d_name) 
            {
                fileEntry = QFileSystemEntry(nativePath + QByteArray(dirEntry->d_name), QFileSystemEntry::FromNativePath());
                metaData.fillFromDirEnt(*dirEntry);
                return true;
            }
        } else {
            break;
        }
    }    lastError = errno;
    return false;
}

static bool checkNameDecodable(const char *d_name, qsizetype len)
{
    // This function is called in a loop from advance() below, but the loop is
    // usually run only once.    return QUtf8::isValidUtf8(QByteArrayView(d_name, len)).isValidUtf8;
}QFileSystemIterator::QFileSystemIterator(const QFileSystemEntry &entry, QDir::Filters filters,
                                         const QStringList &nameFilters, QDirIterator::IteratorFlags flags)
    : nativePath(entry.nativeFilePath())
    , dir(nullptr)
    , dirEntry(nullptr)
    , lastError(0)
{
    Q_UNUSED(filters);
    Q_UNUSED(nameFilters);
    Q_UNUSED(flags);    if ((dir = QT_OPENDIR(nativePath.constData())) == nullptr) {
        lastError = errno;
    } else {
        if (!nativePath.endsWith('/'))
            nativePath.append('/');
    }
}QFileSystemIterator::~QFileSystemIterator()
{
    if (dir)
        QT_CLOSEDIR(dir);
}bool QFileSystemIterator::advance(QFileSystemEntry &fileEntry, QFileSystemMetaData &metaData)
{
    if (!dir)
        return false;    for (;;) {
        dirEntry = QT_READDIR(dir);        if (dirEntry) {
            qsizetype len = strlen(dirEntry->d_name);
            if (checkNameDecodable(dirEntry->d_name, len)) {
                fileEntry = QFileSystemEntry(nativePath + QByteArray(dirEntry->d_name, len), QFileSystemEntry::FromNativePath());
                metaData.fillFromDirEnt(*dirEntry);
                return true;
            }
        } else {
            break;
        }
    }    lastError = errno;
    return false;
}QT_END_NAMESPACE#endif // QT_NO_FILESYSTEMITERATOR