Method mount

lib/vfs/lif.cc:204–239

private:
    void mount()
    {
        _sectorSize = getLogicalSectorSize();
        _sectorsPerBlock = _sectorSize / _config.block_size();

        _rootBlock = getLifBlock(0);

        ByteReader rbr(_rootBlock);
        if (rbr.read_be16() != 0x8000)
            throw BadFilesystemException();
        _volumeLabel = trimWhitespace(rbr.read(6));
        _directoryBlock = rbr.read_be32();
        rbr.skip(4);
        _directorySize = rbr.read_be32();
        rbr.skip(4);
        unsigned tracks = rbr.read_be32();
        unsigned heads = rbr.read_be32();
        unsigned sectors = rbr.read_be32();
        _usedBlocks = 1 + _directorySize;

        Bytes directory = getLifBlock(_directoryBlock, _directorySize);

        _dirents.clear();
        ByteReader br(directory);
        while (!br.eof())
        {
            Bytes direntBytes = br.read(32);
            if (direntBytes[0] != 0xff)
            {
                auto dirent = std::make_unique<LifDirent>(_config, direntBytes);
                _usedBlocks += dirent->length / _config.block_size();
                _dirents.push_back(std::move(dirent));
            }
        }
        _totalBlocks = std::max(tracks * heads * sectors, _usedBlocks);
    }

    std::shared_ptr<LifDirent> findFile(const std::string filename)
    {