/// <summary>
/// Compares the specified data.
/// </summary>
/// <param name="data">The data.</param>
/// <param name="offset">The offset.</param>
/// <param name="type">The type.</param>
/// <returns></returns>
public bool Compare(byte[] data, uint offset, FatType type)
{
var entry = new DataBlock(data);
byte first = entry.GetByte(offset + Entry.DOSName);
if (first == FileNameAttribute.LastEntry)
{
return(false);
}
if ((first == FileNameAttribute.Deleted) | (first == FileNameAttribute.Dot))
{
return(false);
}
if (first == FileNameAttribute.Escape)
{
return(false);
}
uint startcluster = FatFileSystem.GetClusterEntry(data, offset, type);
if (startcluster == cluster)
{
return(true);
}
return(false);
}
/// <summary>
/// Compares the specified data.
/// </summary>
/// <param name="data">The data.</param>
/// <param name="offset">The offset.</param>
/// <param name="type">The type.</param>
/// <returns></returns>
public bool Compare(byte[] data, uint offset, FatType type)
{
BinaryFormat entry = new BinaryFormat(data);
byte first = entry.GetByte(offset + Entry.DOSName);
if (first == FileNameAttribute.LastEntry)
{
return(false);
}
if ((first == FileNameAttribute.Deleted) | (first == FileNameAttribute.Dot))
{
return(false);
}
if (first == FileNameAttribute.Escape)
{
return(false);
}
string entryname = FatFileSystem.ExtractFileName(data, offset);
if (entryname == name)
{
return(true);
}
return(false);
}
public FatDirectory(FatFileSystem aFileSystem, string aName, ulong firstCluster, Directory baseDirectory, ulong size)
: base(aFileSystem, aName, baseDirectory)
{
FileSystem = aFileSystem;
FirstClusterNum = firstCluster;
Size = size;
}
public static DiscFileSystem FormatStream(string fileSystemName, Stream stream, long size, string label)
{
switch (fileSystemName)
{
case "NTFS":
{
var geometry = FindBasicGeometry(stream, size);
Logger.Info("Formatting stream as NTFS");
return(NtfsFileSystem.Format(stream, label, geometry, 0, geometry.TotalSectorsLong));
}
case "FAT":
{
var geometry = FindBasicGeometry(stream, size);
Logger.Info("Formatting stream as FAT");
#pragma warning disable CS0618 // Typ oder Element ist veraltet
return(FatFileSystem.FormatPartition(stream, label, geometry, 0, geometry.TotalSectors, 0));
#pragma warning restore CS0618 // Typ oder Element ist veraltet
}
default:
{
Logger.Error("Requested file system is not supported (Requested {0}, supported: NTFS, FAT)",
fileSystemName);
Environment.Exit(1);
break;
}
}
return(null);
}
internal ClusterStream(FatFileSystem fileSystem, FileAccess access, uint firstCluster, uint length)
{
_access = access;
_reader = fileSystem.ClusterReader;
_fat = fileSystem.Fat;
_length = length;
_knownClusters = new List <uint>();
if (firstCluster != 0)
{
_knownClusters.Add(firstCluster);
}
else
{
_knownClusters.Add(FatBuffer.EndOfChain);
}
if (_length == uint.MaxValue)
{
_length = DetectLength();
}
_currentCluster = uint.MaxValue;
_clusterBuffer = new byte[_reader.ClusterSize];
}
public FatDirectoryEntry(
FatFileSystem aFileSystem,
FatDirectoryEntry aParent,
string aName,
ulong aFirstCluster)
: base(aFileSystem, aParent, aName, 0, DirectoryEntryTypeEnum.Directory)
{
if (aFileSystem == null)
{
Global.mFileSystemDebugger.SendInternal($"FatDirectoryEntry.ctor : aFileSystem is null.");
throw new ArgumentNullException(nameof(aFileSystem));
}
if (aName == null)
{
Global.mFileSystemDebugger.SendInternal($"FatDirectoryEntry.ctor : aName is null.");
throw new ArgumentNullException(nameof(aName));
}
if (aFirstCluster < 2)
{
Global.mFileSystemDebugger.SendInternal($"FatDirectoryEntry.ctor : aFirstCluster is out of range.");
throw new ArgumentOutOfRangeException(nameof(aFirstCluster));
}
Global.mFileSystemDebugger.SendInternal($"FatDirectoryEntry.ctor : aParent.Name = {aParent?.mName}, aName = {aName}, aFirstCluster = {aFirstCluster}");
mFileSystem = aFileSystem;
mParent = aParent;
mFirstClusterNum = aFirstCluster;
mEntryHeaderDataOffset = 0;
}
/// <summary>
/// This method creates a .vhd hard drive formatted in FAT.
/// </summary>
/// <param name="diskSize">The size of the disk in bytes.</param>
/// <param name="location">Defines the physical location and file name. .vhd extension required.</param>
/// <param name="dynamic">Determines whether or not the disk will be of fixed size or dynamic size.</param>
/// <returns>A bool determining if the method succeeded.</returns>
public bool CreateFatDrive(long diskSize, string location, bool dynamic)
{
try {
using (Stream vhdStream = File.Create(@location))
{
Disk disk = null;
if (dynamic)
{
disk = Disk.InitializeDynamic(vhdStream, Ownership.None, diskSize);
}
else
{
disk = Disk.InitializeFixed(vhdStream, Ownership.None, diskSize);
}
BiosPartitionTable.Initialize(disk, WellKnownPartitionType.WindowsFat);
FatFileSystem.FormatPartition(disk, 0, null);
return(true);
}
}
catch (IOException e)
{
Console.WriteLine(e.StackTrace);
return(false);
}
}
public void HonoursReadOnly()
{
SparseMemoryStream diskStream = new SparseMemoryStream();
FatFileSystem fs = FatFileSystem.FormatFloppy(diskStream, FloppyDiskType.HighDensity, "FLOPPY_IMG ");
fs.CreateDirectory(@"AAA");
fs.CreateDirectory(@"BAR");
using (Stream t = fs.OpenFile(@"BAR\AAA.TXT", FileMode.Create, FileAccess.ReadWrite)) { }
using (Stream s = fs.OpenFile(@"BAR\FOO.TXT", FileMode.Create, FileAccess.ReadWrite))
{
StreamWriter w = new StreamWriter(s);
w.WriteLine("FOO - some sample text");
w.Flush();
}
fs.SetLastAccessTimeUtc(@"BAR", new DateTime(1980, 1, 1));
fs.SetLastAccessTimeUtc(@"BAR\FOO.TXT", new DateTime(1980, 1, 1));
// Check we can access a file without any errors
SparseStream roDiskStream = SparseStream.ReadOnly(diskStream, Ownership.None);
FatFileSystem fatFs = new FatFileSystem(roDiskStream);
using (Stream fileStream = fatFs.OpenFile(@"BAR\FOO.TXT", FileMode.Open))
{
fileStream.ReadByte();
}
}
public FatDirectoryEntry(
FatFileSystem aFileSystem,
FatDirectoryEntry aParent,
string aName,
ulong aFirstCluster)
: base(aFileSystem, aParent, aName, 0, DirectoryEntryTypeEnum.Directory)
{
if (aFileSystem == null)
{
FileSystemHelpers.Debug("FatDirectoryEntry.ctor", "aFileSystem is null.");
throw new ArgumentNullException(nameof(aFileSystem));
}
if (aName == null)
{
FileSystemHelpers.Debug("FatDirectoryEntry.ctor", "aName is null.");
throw new ArgumentNullException(nameof(aName));
}
if (aFirstCluster < 2)
{
FileSystemHelpers.Debug("FatDirectoryEntry.ctor", "aFirstCluster is out of range.");
throw new ArgumentOutOfRangeException(nameof(aFirstCluster));
}
FileSystemHelpers.Debug("FatDirectoryEntry.ctor", "aParent.Name =", aParent?.mName, ", aName =", aName, ", aFirstCluster =", aFirstCluster);
mFileSystem = aFileSystem;
mParent = aParent;
mFirstClusterNum = aFirstCluster;
mEntryHeaderDataOffset = 0;
}
public void FileSystemInfo()
{
FatFileSystem fs = FatFileSystem.FormatFloppy(new MemoryStream(), FloppyDiskType.HighDensity, "FLOPPY_IMG ");
DiscFileSystemInfo fi = fs.GetFileSystemInfo(@"SOMEDIR\SOMEFILE");
Assert.IsNotNull(fi);
}
/// <summary>
/// Initializes a new instance of the Directory class. Use this constructor to represent the root directory.
/// </summary>
/// <param name="fileSystem">The file system.</param>
/// <param name="dirStream">The stream containing the directory info.</param>
internal Directory(FatFileSystem fileSystem, Stream dirStream)
{
FileSystem = fileSystem;
_dirStream = dirStream;
LoadEntries();
}
public void ReadFatFilesystemTest(string path)
{
using (Stream developerDiskImageStream = File.OpenRead(path))
using (var disk = new Disk(developerDiskImageStream, Ownership.None))
{
// Find the first (and supposedly, only, FAT partition)
var volumes = VolumeManager.GetPhysicalVolumes(disk);
foreach (var volume in volumes)
{
var fileSystems = FileSystemManager.DetectFileSystems(volume);
var fileSystem = Assert.Single(fileSystems);
Assert.Equal("FAT", fileSystem.Name);
using (FatFileSystem fat = (FatFileSystem)fileSystem.Open(volume))
{
Assert.True(fat.FileExists("hello.txt"));
using (Stream helloStream = fat.OpenFile("hello.txt", FileMode.Open, FileAccess.Read))
using (MemoryStream copyStream = new MemoryStream())
{
Assert.NotEqual(0, helloStream.Length);
helloStream.CopyTo(copyStream);
Assert.Equal(helloStream.Length, copyStream.Length);
Assert.Equal("Hello, World!\n", Encoding.UTF8.GetString(copyStream.ToArray()));
}
}
}
}
}
public FatDirectory(FatFileSystem aFileSystem, string aName, ulong firstCluster, Directory baseDirectory, ulong size)
: base(aFileSystem, aName, baseDirectory)
{
FileSystem = aFileSystem;
FirstClusterNum = firstCluster;
Size = size;
}
public FatDirectoryEntry(
FatFileSystem aFileSystem,
FatDirectoryEntry aParent,
string aName,
ulong aFirstCluster)
: base(aFileSystem, aParent, aName, 0, DirectoryEntryTypeEnum.Directory)
{
if (aFileSystem == null)
{
throw new ArgumentNullException("aFileSystem");
}
if (aName == null)
{
throw new ArgumentNullException("aName");
}
if (aFirstCluster < 2)
{
throw new ArgumentOutOfRangeException("aFirstCluster");
}
mFileSystem = aFileSystem;
mParent = aParent;
mFirstClusterNum = aFirstCluster;
mEntryHeaderDataOffset = 0;
//FatHelpers.Debug(
// "-- FatDirectoryEntry.ctor : " + "aParent.Name = " + aParent?.mName + ", aName = " + aName
// + ", aFirstCluster = " + aFirstCluster + " --");
}
public void DirectoryInfo()
{
FatFileSystem fs = FatFileSystem.FormatFloppy(new MemoryStream(), FloppyDiskType.HighDensity, "FLOPPY_IMG ");
DiscDirectoryInfo fi = fs.GetDirectoryInfo(@"SOMEDIR");
Assert.NotNull(fi);
}
public FatDirectoryEntry(
FatFileSystem aFileSystem,
FatDirectoryEntry aParent,
string aName,
ulong aFirstCluster)
: base(aFileSystem, aParent, aName, 0, DirectoryEntryTypeEnum.Directory)
{
if (aFileSystem == null)
{
FileSystemHelpers.Debug("FatDirectoryEntry.ctor", "aFileSystem is null.");
throw new ArgumentNullException(nameof(aFileSystem));
}
if (aName == null)
{
FileSystemHelpers.Debug("FatDirectoryEntry.ctor", "aName is null.");
throw new ArgumentNullException(nameof(aName));
}
if (aFirstCluster < 2)
{
FileSystemHelpers.Debug("FatDirectoryEntry.ctor", "aFirstCluster is out of range.");
throw new ArgumentOutOfRangeException(nameof(aFirstCluster));
}
FileSystemHelpers.Debug("FatDirectoryEntry.ctor", "aParent.Name =", aParent?.mName, ", aName =", aName, ", aFirstCluster =", aFirstCluster);
mFileSystem = aFileSystem;
mParent = aParent;
mFirstClusterNum = aFirstCluster;
mEntryHeaderDataOffset = 0;
}
public FatDirectoryEntry(
FatFileSystem aFileSystem,
FatDirectoryEntry aParent,
string aName,
ulong aFirstCluster)
: base(aFileSystem, aParent, aName, 0, DirectoryEntryTypeEnum.Directory)
{
if (aFileSystem == null)
{
Global.mFileSystemDebugger.SendInternal($"FatDirectoryEntry.ctor : aFileSystem is null.");
throw new ArgumentNullException(nameof(aFileSystem));
}
if (aName == null)
{
Global.mFileSystemDebugger.SendInternal($"FatDirectoryEntry.ctor : aName is null.");
throw new ArgumentNullException(nameof(aName));
}
if (aFirstCluster < 2)
{
Global.mFileSystemDebugger.SendInternal($"FatDirectoryEntry.ctor : aFirstCluster is out of range.");
throw new ArgumentOutOfRangeException(nameof(aFirstCluster));
}
Global.mFileSystemDebugger.SendInternal($"FatDirectoryEntry.ctor : aParent.Name = {aParent?.mName}, aName = {aName}, aFirstCluster = {aFirstCluster}");
mFileSystem = aFileSystem;
mParent = aParent;
mFirstClusterNum = aFirstCluster;
mEntryHeaderDataOffset = 0;
}
public void Setup()
{
var xDevice = new TestBlockDevice();
var xPartition = new Partition(xDevice, 0, xDevice.BlockCount);
var xFactory = new FatFileSystemFactory();
mFS = (FatFileSystem)xFactory.Create(xPartition, "0:\\", (long)(xPartition.BlockSize * xPartition.BlockCount));
}
// Size is UInt32 because FAT doesn't support bigger.
// Don't change to UInt64
public FatDirectoryEntry(FatFileSystem aFileSystem, FatDirectoryEntry aParent, string aName, uint aSize, ulong aFirstClusterNum, uint aEntryHeaderDataOffset, DirectoryEntryTypeEnum aEntryType)
: base(aFileSystem, aParent, aName, aSize, aEntryType)
{
FileSystem = aFileSystem;
Parent = aParent;
FirstClusterNum = aFirstClusterNum;
EntryHeaderDataOffset = aEntryHeaderDataOffset;
}
public FatFileSystemProvider OpenUserPartition()
{
IStorage encStorage = User.Open().AsStorage();
var decStorage = new CachedStorage(new Aes128XtsStorage(encStorage, Keyset.BisKeys[3], 0x4000, true), 0x4000, 4, true);
var fat = new FatFileSystem(decStorage.AsStream(FileAccess.Read), Ownership.None);
return(new FatFileSystemProvider(fat));
}
public static FileSystemType GetFileSystemType(Partition aDevice)
{
if (FatFileSystem.IsDeviceFAT(aDevice))
{
return(FileSystemType.FAT);
}
return(FileSystemType.Unknown);
}
public void Root()
{
FatFileSystem fs = FatFileSystem.FormatFloppy(new MemoryStream(), FloppyDiskType.HighDensity, "FLOPPY_IMG ");
Assert.IsNotNull(fs.Root);
Assert.IsTrue(fs.Root.Exists);
Assert.IsEmpty(fs.Root.Name);
Assert.IsNull(fs.Root.Parent);
}
private void CopyFileFromFs(string dstFile, string srcFile, FatFileSystem dstFat)
{
MakeDirectory(dstFile, dstFat);
using (var dst = dstFat.OpenFile(dstFile, FileMode.Create)) {
using (var src = File.OpenRead(srcFile)) {
src.CopyTo(dst);
}
}
}
public void Label()
{
FatFileSystem fs = FatFileSystem.FormatFloppy(new MemoryStream(), FloppyDiskType.HighDensity, "FLOPPY_IMG ");
Assert.AreEqual("FLOPPY_IMG ", fs.VolumeLabel);
fs = FatFileSystem.FormatFloppy(new MemoryStream(), FloppyDiskType.HighDensity, null);
Assert.AreEqual("NO NAME ", fs.VolumeLabel);
}
public override FileSystemInfo[] Detect(Stream stream, VolumeInfo volume)
{
if (FatFileSystem.Detect(stream))
{
return(new FileSystemInfo[] { new VfsFileSystemInfo("FAT", "Microsoft FAT", Open) });
}
return(new FileSystemInfo[0]);
}
private void MakeDirectory(string fileName, FatFileSystem dstFat)
{
var dirname = Path.GetDirectoryName(fileName);
if (dirname != @"\" && dirname != "" && !dstFat.DirectoryExists(dirname))
{
dstFat.CreateDirectory(dirname);
}
}
public NandPartition OpenUserPartition()
{
SparseStream encStream = User.Open();
Xts xts = XtsAes128.Create(Keyset.BisKeys[3]);
var decStream = new RandomAccessSectorStream(new XtsSectorStream(encStream, xts, 0x4000, 0), true);
var fat = new FatFileSystem(decStream, Ownership.None);
return(new NandPartition(fat));
}
private void CreateFile(PatchedFile file, FatFileSystem dstFat)
{
MakeDirectory(file.Name, dstFat);
using (var dst = dstFat.OpenFile(file.Name, FileMode.Create)) {
using (var ms = new MemoryStream(file.FileData)) {
ms.Position = 0;
ms.CopyTo(dst);
}
}
}
public void Setup()
{
DebuggerFactory.WriteToConsole = true;
var xDevice = new TestBlockDevice();
var xPartition = new Partition(xDevice, 0, xDevice.BlockCount);
var xFactory = new FatFileSystemFactory();
mFS = (FatFileSystem)xFactory.Create(xPartition, "0:\\", (long)(xPartition.BlockSize * xPartition.BlockCount));
mFat = mFS.GetFat(0);
}
public NandPartition OpenUserPartition()
{
IStorage encStorage = User.Open().AsStorage();
var decStorage = new CachedStorage(new Aes128XtsStorage(encStorage, Keyset.BisKeys[3], 0x4000, true), 0x4000, 4, true);
decStorage.SetReadOnly();
var fat = new FatFileSystem(decStorage.AsStream(), Ownership.None);
return(new NandPartition(fat));
}
public FatFileStream(FatFileSystem fileSystem, Directory dir, long fileId, FileAccess access)
{
_dir = dir;
_dirId = fileId;
DirectoryEntry dirEntry = _dir.GetEntry(_dirId);
_stream = new ClusterStream(fileSystem, access, (uint)dirEntry.FirstCluster, (uint)dirEntry.FileSize);
_stream.FirstClusterChanged += FirstClusterAllocatedHandler;
}
public void Read()
{
var path = @"d:\temp\mbr.img";
DiscUtils.Containers.SetupHelper.SetupContainers();
DiscUtils.FileSystems.SetupHelper.SetupFileSystems();
var disk = VirtualDisk.OpenDisk(path, FileAccess.ReadWrite);
var fs = new FatFileSystem(disk.Partitions[0].Open());
var directories = fs.GetDirectories("");
var files = fs.GetFiles("");
}
public void SimpleVhdFat()
{
using (Disk disk = Disk.InitializeDynamic(new MemoryStream(), Ownership.Dispose, 16 * 1024 * 1024))
{
BiosPartitionTable.Initialize(disk, WellKnownPartitionType.WindowsFat);
using (FatFileSystem fs = FatFileSystem.FormatPartition(disk, 0, null))
{
fs.CreateDirectory("Foo");
}
}
}
protected virtual void InitializeFileSystems()
{
for (int i = 0; i < mPartitions.Count; i++)
{
string xRootPath = string.Concat(i, VolumeSeparatorChar, DirectorySeparatorChar);
Cosmos.System.FileSystem.FileSystem xFileSystem = null;
switch (Cosmos.System.FileSystem.FileSystem.GetFileSystemType(mPartitions[i]))
{
case FileSystemType.FAT:
xFileSystem = new FatFileSystem(mPartitions[i]);
mFileSystems.Add(new KVP <string, Cosmos.System.FileSystem.FileSystem>(xRootPath, xFileSystem));
break;
default:
FatHelpers.Debug("Unknown filesystem type!");
return;
}
//global::System.Console.Write("i = ");
//global::System.Console.WriteLine(i.ToString());
//global::System.Console.Write("mFileSystems.Count = ");
//global::System.Console.WriteLine(mFileSystems.Count);
var xEntry = mFileSystems[i];
if (xEntry.Key == xRootPath)
{
var xFatFS = (FatFileSystem)xFileSystem;
FatHelpers.Debug("-------File System--------");
FatHelpers.Debug("Bytes per Cluster: " + xFatFS.BytesPerCluster);
FatHelpers.Debug("Bytes per Sector: " + xFatFS.BytesPerSector);
FatHelpers.Debug("Cluster Count: " + xFatFS.ClusterCount);
FatHelpers.Debug("Data Sector: " + xFatFS.DataSector);
FatHelpers.Debug("Data Sector Count: " + xFatFS.DataSectorCount);
FatHelpers.Debug("FAT Sector Count: " + xFatFS.FatSectorCount);
FatHelpers.Debug("FAT Type: " + xFatFS.FatType);
FatHelpers.Debug("Number of FATS: " + xFatFS.NumberOfFATs);
FatHelpers.Debug("Reserved Sector Count: " + xFatFS.ReservedSectorCount);
FatHelpers.Debug("Root Cluster: " + xFatFS.RootCluster);
FatHelpers.Debug("Root Entry Count: " + xFatFS.RootEntryCount);
FatHelpers.Debug("Root Sector: " + xFatFS.RootSector);
FatHelpers.Debug("Root Sector Count: " + xFatFS.RootSectorCount);
FatHelpers.Debug("Sectors per Cluster: " + xFatFS.SectorsPerCluster);
FatHelpers.Debug("Total Sector Count: " + xFatFS.TotalSectorCount);
//Console.WriteLine();
//Console.WriteLine("Mapping Drive C...");
//FatFileSystem.AddMapping("C", mFileSystem);
//SentinelKernel.System.Filesystem.FAT.Listing.FatDirectory dir = new Sys.Filesystem.FAT.Listing.FatDirectory(mFileSystem, "Sentinel");
}
else
{
FatHelpers.Debug("No filesystem found.");
}
}
}
/// <summary>
/// Initializes a new instance of the Directory class. Use this constructor to represent non-root directories.
/// </summary>
/// <param name="parent">The parent directory</param>
/// <param name="parentId">The identity of the entry representing this directory in the parent</param>
internal Directory(Directory parent, long parentId)
{
_fileSystem = parent._fileSystem;
_parent = parent;
_parentId = parentId;
DirectoryEntry dirEntry = ParentsChildEntry;
_dirStream = new ClusterStream(_fileSystem, FileAccess.ReadWrite, dirEntry.FirstCluster, uint.MaxValue);
LoadEntries();
}
public FatDirectoryEntry(
FatFileSystem aFileSystem,
FatDirectoryEntry aParent,
string aFullPath,
string aName,
ulong aFirstCluster)
: base(aFileSystem, aParent, aFullPath, aName, 0, DirectoryEntryTypeEnum.Directory)
{
if (aFirstCluster < aFileSystem.RootCluster)
{
throw new ArgumentOutOfRangeException(nameof(aFirstCluster));
}
mFirstClusterNum = aFirstCluster;
mEntryHeaderDataOffset = 0;
}
public FatDirectoryEntry(
FatFileSystem aFileSystem,
FatDirectoryEntry aParent,
string aFullPath,
string aName,
ulong aFirstCluster)
: base(aFileSystem, aParent, aFullPath, aName, 0, DirectoryEntryTypeEnum.Directory)
{
Global.mFileSystemDebugger.SendInternal("FatDirectoryEntry.ctor");
if (aFirstCluster < 2)
{
Global.mFileSystemDebugger.SendInternal("aFirstCluster is out of range.");
throw new ArgumentOutOfRangeException(nameof(aFirstCluster));
}
mFirstClusterNum = aFirstCluster;
mEntryHeaderDataOffset = 0;
}
/// <summary>
/// Initializes a new instance of the <see cref="VfsFileSystem"/> class.
/// </summary>
/// <param name="fat">The fat.</param>
public VfsFileSystem(FatFileSystem fat)
{
Fat = fat;
}
// Size is UInt32 because FAT doesn't support bigger.
// Dont change to UInt64
public FatFile(FatFileSystem aFileSystem, string aName, UInt32 aSize, UInt64 aFirstCluster)
: base(aFileSystem, aName, aSize) {
FileSystem = aFileSystem;
FirstClusterNum = aFirstCluster;
}
/// <summary>
/// Initializes a new instance of the <see cref="FatFileStream"/> class.
/// </summary>
/// <param name="fs">The fs.</param>
/// <param name="location">The location.</param>
public FatFileStream(FatFileSystem fs, FatFileLocation location)
: this(fs, location.FirstCluster, location.DirectorySector, location.DirectorySectorIndex)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="FatFileStream"/> class.
/// </summary>
/// <param name="fs">The fs.</param>
/// <param name="startCluster">The start cluster.</param>
/// <param name="directorySector">The directory sector.</param>
/// <param name="directorySectorIndex">Index of the directory sector.</param>
public FatFileStream(FatFileSystem fs, uint startCluster, uint directorySector, uint directorySectorIndex)
{
this.fs = fs;
this.clusterSize = fs.ClusterSizeInBytes;
this.data = new byte[clusterSize];
this.startCluster = startCluster;
this.directorySector = directorySector;
this.directorySectorIndex = directorySectorIndex;
this.read = true;
this.write = false;
this.position = 0;
this.dirty = false;
this.nthCluster = System.UInt32.MaxValue; // Not positioned yet
this.lengthOnDisk = fs.GetFileSize(directorySector, directorySectorIndex);
this.length = this.lengthOnDisk;
currentCluster = 0;
}
// Size is UInt32 because FAT doesn't support bigger.
// Dont change to UInt64
public FatFile(FatFileSystem aFileSystem, string aName, UInt32 aSize, UInt64 aFirstCluster, FatDirectory baseDirectory)
: base(aFileSystem, aName, aSize, baseDirectory)
{
FileSystem = aFileSystem;
FirstClusterNum = aFirstCluster;
}
