/// <summary> /// Initializes a stream as a fixed-sized VDI file. /// </summary> /// <param name="stream">The stream to initialize.</param> /// <param name="ownsStream">Indicates if the new instance controls the lifetime of the stream.</param> /// <param name="capacity">The desired capacity of the new disk</param> /// <returns>An object that accesses the stream as a VDI file</returns> public static DiskImageFile InitializeFixed(Stream stream, Ownership ownsStream, long capacity) { PreHeaderRecord preHeader = PreHeaderRecord.Initialized(); HeaderRecord header = HeaderRecord.Initialized(ImageType.Fixed, ImageFlags.None, capacity, 1024 * 1024, 0); byte[] blockTable = new byte[header.BlockCount * 4]; for (int i = 0; i < header.BlockCount; ++i) { Utilities.WriteBytesLittleEndian((uint)i, blockTable, i * 4); } header.BlocksAllocated = header.BlockCount; stream.Position = 0; preHeader.Write(stream); header.Write(stream); stream.Position = header.BlocksOffset; stream.Write(blockTable, 0, blockTable.Length); long totalSize = header.DataOffset + ((long)header.BlockSize * (long)header.BlockCount); if (stream.Length < totalSize) { stream.SetLength(totalSize); } return(new DiskImageFile(stream, ownsStream)); }
public static PreHeaderRecord Initialized() { PreHeaderRecord result = new PreHeaderRecord(); result.FileInfo = "<<< Sun xVM VirtualBox Disk Image >>>\n"; result.Signature = VdiSignature; result.Version = new FileVersion(0x00010001); return result; }
private void ReadHeader() { _stream.Position = 0; _preHeader = new PreHeaderRecord(); _preHeader.Read(_stream); _header = new HeaderRecord(); _header.Read(_preHeader.Version, _stream); }
public static PreHeaderRecord Initialized() { PreHeaderRecord result = new PreHeaderRecord(); result.FileInfo = "<<< Sun xVM VirtualBox Disk Image >>>\n"; result.Signature = VdiSignature; result.Version = new FileVersion(0x00010001); return(result); }
/// <summary> /// Initializes a stream as a dynamically-sized VDI file. /// </summary> /// <param name="stream">The stream to initialize.</param> /// <param name="ownsStream">Indicates if the new instance controls the lifetime of the stream.</param> /// <param name="capacity">The desired capacity of the new disk</param> /// <returns>An object that accesses the stream as a VDI file</returns> public static DiskImageFile InitializeDynamic(Stream stream, Ownership ownsStream, long capacity) { PreHeaderRecord preHeader = PreHeaderRecord.Initialized(); HeaderRecord header = HeaderRecord.Initialized(ImageType.Dynamic, ImageFlags.None, capacity, 1024 * 1024, 0); byte[] blockTable = new byte[header.BlockCount * 4]; for (int i = 0; i < blockTable.Length; ++i) { blockTable[i] = 0xFF; } header.BlocksAllocated = 0; stream.Position = 0; preHeader.Write(stream); header.Write(stream); stream.Position = header.BlocksOffset; stream.Write(blockTable, 0, blockTable.Length); return(new DiskImageFile(stream, ownsStream)); }
private void ReadHeader() { _stream.Position = 0; _preHeader = new PreHeaderRecord(); _preHeader.Read(_stream); _header = new HeaderRecord(); _header.Read(_preHeader.Version, _stream); }