public void Initialize(FileStream isoStream, long offset, bool isRawDump)
{
this.VolumeBaseOffset = offset;
this.IsRawDump = isRawDump;
this.VolumeType = VolumeDataType.Data;
this.DirectoryStructureArray = new ArrayList();
this.FormatDescription = MicrosoftExFatFileSystem.FORMAT_DESCRIPTION_STRING;
this.JumpBoot = ParseFile.ReadUint24LE(isoStream, this.VolumeBaseOffset + 0);
this.MagicBytes = ParseFile.ParseSimpleOffset(isoStream, this.VolumeBaseOffset + 3, 8);
this.ZeroChunk = ParseFile.ParseSimpleOffset(isoStream, this.VolumeBaseOffset + 11, 53);
this.PartitionOffset = ParseFile.ReadUlongLE(isoStream, this.VolumeBaseOffset + 64);
this.VolumeLength = ParseFile.ReadUlongLE(isoStream, this.VolumeBaseOffset + 72);
this.FatOffset = ParseFile.ReadUintLE(isoStream, this.VolumeBaseOffset + 80);
this.FatLength = ParseFile.ReadUintLE(isoStream, this.VolumeBaseOffset + 84);
this.ClusterHeapOffset = ParseFile.ReadUintLE(isoStream, this.VolumeBaseOffset + 88);
this.ClusterCount = ParseFile.ReadUintLE(isoStream, this.VolumeBaseOffset + 92);
this.RootDirectoryFirstCluster = ParseFile.ReadUintLE(isoStream, this.VolumeBaseOffset + 96);
this.VolumeSerialNumber = ParseFile.ReadUintLE(isoStream, this.VolumeBaseOffset + 100);
this.VolumeIdentifier = this.VolumeSerialNumber.ToString("X2");
this.FileSystemRevision = ParseFile.ReadUshortLE(isoStream, this.VolumeBaseOffset + 104);
this.VolumeFlags = ParseFile.ReadUshortLE(isoStream, this.VolumeBaseOffset + 106);
this.BytesPerSector = ParseFile.ReadByte(isoStream, this.VolumeBaseOffset + 108);
this.SectorsPerCluster = ParseFile.ReadByte(isoStream, this.VolumeBaseOffset + 109);
this.NumberOfFats = ParseFile.ReadByte(isoStream, this.VolumeBaseOffset + 110);
// caclulate helper values
this.SectorSizeInBytes = (uint)(1 << this.BytesPerSector);
this.ClusterSizeInBytes = (uint)(1 << (this.SectorsPerCluster + this.BytesPerSector));
this.VolumeLengthInBytes = this.VolumeLength * this.SectorSizeInBytes;
this.FatAbsoluteOffset = (ulong)this.VolumeBaseOffset + (this.FatOffset * this.SectorSizeInBytes);
this.FatLengthInBytes = this.FatLength * this.SectorSizeInBytes;
this.ClusterHeapAbsoluteOffset = (ulong)this.VolumeBaseOffset + (this.ClusterHeapOffset * this.SectorSizeInBytes);
this.RootDirectoryAbsoluteOffset =
MicrosoftExFatFileSystem.GetOffsetForClusterId(this.ClusterHeapAbsoluteOffset, this.ClusterSizeInBytes, this.RootDirectoryFirstCluster); // this.ClusterHeapAbsoluteOffset + ((this.RootDirectoryFirstCluster - MicrosoftExFatFileSystem.CLUSTER_CORRECTION_OFFSET) * this.ClusterSizeInBytes);
if (this.FileSystemRevision == MicrosoftExFatFileSystem.EXFAT_VERSION_0100)
{
// initialize FAT
this.InitializeAndValidateFat(isoStream);
// process root directory entry
this.GetVolumeLabel(isoStream);
// load directories
this.LoadDirectories(isoStream);
}
else
{
MessageBox.Show(String.Format("Unsupported exFAT version: {0}", this.FileSystemRevision.ToString("X8")));
}
}