/// <summary>
/// Создаёт файл-образ раздела жёсткого диска с файловой системой DehaxFS с параметрами.
/// </summary>
/// <param name="diskPartitionSize">Размер раздела</param>
/// <param name="diskClusterFactor">Размер кластера, множитель секторов диска</param>
public DFSImage(long diskPartitionSize, byte diskClusterFactor)
{
diskClusterFactor = (byte)Math.Pow(2, diskClusterFactor - 1);
_diskPartitionSize = diskPartitionSize;
_diskClusterFactor = diskClusterFactor;
_diskClusterSize = DISK_BYTES_PER_SECTOR * diskClusterFactor;
_bitMap = new BitMap((int)(_diskPartitionSize / _diskClusterSize));
_inodes = new Inodes((int)(_diskPartitionSize / _diskClusterSize));
_rootDirectory = new RootDirectory(_diskClusterSize);
_emptyData = new byte[_diskPartitionSize - Marshal.SizeOf <Superblock>() - _bitMap.GetLength() - _inodes.GetLength() - _rootDirectory.GetLength()];
_superblock = new Superblock()
{
filesystemType = 0x28,
numClusters = (int)(_diskPartitionSize / _diskClusterSize),
clusterFactor = diskClusterFactor,
inodeArraySize = _inodes.GetLength(),
bitMapSize = _bitMap.GetLength(),
numFreeClusters = _emptyData.Length / _diskClusterSize,
numFreeInode = (int)(_diskPartitionSize / _diskClusterSize - 1)
};
InitializeFileSystem();
}
protected override void ProcessRecord()
{
#region MBR
MasterBootRecord mbr = MasterBootRecord.Get(devicePath);
uint superblockOffset = 0;
foreach (PartitionEntry partition in mbr.PartitionTable)
{
if (partition.Bootable && partition.SystemID == "LINUX")
{
superblockOffset = partition.StartSector;
}
}
#endregion MBR
// Obtain a handle to the device named "devicePath"
IntPtr hDevice = NativeMethods.getHandle(devicePath);
using (FileStream streamToRead = NativeMethods.getFileStream(hDevice))
{
// Get Superblock to understand File System Layout
Superblock superBlock = new Superblock(Superblock.GetBytes(streamToRead, superblockOffset));
// Derive the location and length of the Block Group Descriptor Table
uint bgdtOffset = (superblockOffset * NativeMethods.BYTES_PER_SECTOR) + ((superBlock.FirstDataBlock + 1) * superBlock.BlockSize);
uint bgdtEntries = (superBlock.TotalBlockCount / superBlock.BlocksPerGroup) + 1;
uint bgdtLength = bgdtEntries * BlockGroupDescriptor.BLOCK_GROUP_DESCRIPTOR_LENGTH;
}
} // ProcessRecord
public void Format()
{
// Setup superblock
Array.Clear(_tmpBuffer, 0, BlockSize);
Encoding.ASCII.GetBytes(HeaderMagic).CopyTo(_tmpBuffer, 0);
BitConverter.GetBytes((int)0).CopyTo(_tmpBuffer, HeaderMagic.Length);
Source.WriteAll(0, _tmpBuffer, 0, BlockSize);
_superBlock = Superblock.ReadFrom(_tmpBuffer);
// Setup block bitmap
byte[] tmpBuffer = new byte[BlockSize];
Source.WriteAll(BlockSize * 1, tmpBuffer, 0, BlockSize);
// Clear inode bitmap
BitArray inodeBitmap = new BitArray(tmpBuffer);
inodeBitmap[0] = true;
inodeBitmap.CopyTo(tmpBuffer, 0);
Source.WriteAll(BlockSize * 2, tmpBuffer, 0, BlockSize);
// Create root directory
BobFsNode root = new BobFsNode(this, 0);
root.Type = ENodeType.Directory;
root.NumLinks = 1;
root.Size = 0;
root.Commit();
}
public HardLinkInfo(H5BinaryReader reader, Superblock superblock) : base(reader)
{
_superblock = superblock;
// object header address
this.HeaderAddress = superblock.ReadOffset(reader);
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = Encoding.UTF8;
information = "";
if (imagePlugin.Info.SectorSize < 512)
{
return;
}
bool bigEndian = true;
byte[] sector = imagePlugin.ReadSector(partition.Start);
Superblock fatxSb = Marshal.ByteArrayToStructureBigEndian <Superblock>(sector);
if (fatxSb.magic == FATX_CIGAM)
{
fatxSb = Marshal.ByteArrayToStructureLittleEndian <Superblock>(sector);
bigEndian = false;
}
if (fatxSb.magic != FATX_MAGIC)
{
return;
}
int logicalSectorsPerPhysicalSectors = partition.Offset == 0 && !bigEndian ? 8 : 1;
StringBuilder sb = new StringBuilder();
sb.AppendLine("FATX filesystem");
sb.AppendFormat("{0} logical sectors ({1} bytes) per physical sector", logicalSectorsPerPhysicalSectors,
logicalSectorsPerPhysicalSectors * imagePlugin.Info.SectorSize).AppendLine();
sb.AppendFormat("{0} sectors ({1} bytes) per cluster", fatxSb.sectorsPerCluster,
fatxSb.sectorsPerCluster * logicalSectorsPerPhysicalSectors * imagePlugin.Info.SectorSize)
.AppendLine();
sb.AppendFormat("Root directory starts on cluster {0}", fatxSb.rootDirectoryCluster).AppendLine();
string volumeLabel = StringHandlers.CToString(fatxSb.volumeLabel,
bigEndian ? Encoding.BigEndianUnicode : Encoding.Unicode,
true);
sb.AppendFormat("Volume label: {0}", volumeLabel).AppendLine();
sb.AppendFormat("Volume serial: {0:X8}", fatxSb.id).AppendLine();
information = sb.ToString();
XmlFsType = new FileSystemType
{
Type = "FATX filesystem",
ClusterSize =
(uint)(fatxSb.sectorsPerCluster * logicalSectorsPerPhysicalSectors *
imagePlugin.Info.SectorSize),
VolumeName = volumeLabel,
VolumeSerial = $"{fatxSb.id:X8}"
};
XmlFsType.Clusters = (partition.End - partition.Start + 1) * imagePlugin.Info.SectorSize /
XmlFsType.ClusterSize;
}
public GlobalHeapId(H5BinaryReader reader, Superblock superblock) : base(reader)
{
_superblock = superblock;
this.CollectionAddress = superblock.ReadOffset(reader);
this.ObjectIndex = reader.ReadUInt32();
}
public bool Identify(IMediaImage imagePlugin, Partition partition)
{
if (imagePlugin.Info.SectorSize < 512)
{
return(false);
}
uint sbSize = (uint)(Marshal.SizeOf <Superblock>() / imagePlugin.Info.SectorSize);
if (Marshal.SizeOf <Superblock>() % imagePlugin.Info.SectorSize != 0)
{
sbSize++;
}
byte[] sector = imagePlugin.ReadSectors(partition.Start, sbSize);
if (sector.Length < Marshal.SizeOf <Superblock>())
{
return(false);
}
Superblock unicosSb = Marshal.ByteArrayToStructureBigEndian <Superblock>(sector);
AaruConsole.DebugWriteLine("UNICOS plugin", "magic = 0x{0:X16} (expected 0x{1:X16})", unicosSb.s_magic,
UNICOS_MAGIC);
return(unicosSb.s_magic == UNICOS_MAGIC);
}
protected override void ProcessRecord()
{
#region MBR
MasterBootRecord mbr = MasterBootRecord.Get(devicePath);
uint offset = 0;
foreach (PartitionEntry partition in mbr.PartitionTable)
{
if (partition.Bootable && partition.SystemID == "LINUX")
{
offset = partition.StartSector;
}
}
#endregion MBR
IntPtr hDevice = NativeMethods.getHandle(devicePath);
using (FileStream streamToRead = NativeMethods.getFileStream(hDevice))
{
if (asbytes)
{
WriteObject(Superblock.GetBytes(streamToRead, offset));
}
else
{
WriteObject(new Superblock(Superblock.GetBytes(streamToRead, offset)));
}
}
} // ProcessRecord
public BTree2Record04(H5BinaryReader reader, Superblock superblock)
{
this.FilteredHugeObjectAddress = superblock.ReadOffset(reader);
this.FilteredHugeObjectLength = superblock.ReadLength(reader);
this.FilterMask = reader.ReadUInt32();
this.FilteredHugeObjectMemorySize = superblock.ReadLength(reader);
}
public VirtualStoragePropertyDescription(H5BinaryReader reader, Superblock superblock) : base(reader)
{
// address
this.Address = superblock.ReadOffset(reader);
// index
this.Index = reader.ReadUInt32();
}
public static Superblock ReadFrom(byte[] buffer, int bufOffset = 0)
{
Superblock superBlock = new Superblock();
superBlock.Magic = Encoding.ASCII.GetString(buffer, bufOffset + 0, bufOffset + 8);
superBlock.RootInum = BitConverter.ToUInt32(buffer, bufOffset + 8);
return(superBlock);
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = encoding ?? Encoding.GetEncoding("iso-8859-15");
information = "";
if (imagePlugin.Info.SectorSize < 512)
{
return;
}
uint sbAddr = REISER4_SUPER_OFFSET / imagePlugin.Info.SectorSize;
if (sbAddr == 0)
{
sbAddr = 1;
}
uint sbSize = (uint)(Marshal.SizeOf <Superblock>() / imagePlugin.Info.SectorSize);
if (Marshal.SizeOf <Superblock>() % imagePlugin.Info.SectorSize != 0)
{
sbSize++;
}
byte[] sector = imagePlugin.ReadSectors(partition.Start + sbAddr, sbSize);
if (sector.Length < Marshal.SizeOf <Superblock>())
{
return;
}
Superblock reiserSb = Marshal.ByteArrayToStructureLittleEndian <Superblock>(sector);
if (!_magic.SequenceEqual(reiserSb.magic))
{
return;
}
var sb = new StringBuilder();
sb.AppendLine("Reiser 4 filesystem");
sb.AppendFormat("{0} bytes per block", reiserSb.blocksize).AppendLine();
sb.AppendFormat("Volume disk format: {0}", reiserSb.diskformat).AppendLine();
sb.AppendFormat("Volume UUID: {0}", reiserSb.uuid).AppendLine();
sb.AppendFormat("Volume name: {0}", StringHandlers.CToString(reiserSb.label, Encoding)).AppendLine();
information = sb.ToString();
XmlFsType = new FileSystemType
{
Type = "Reiser 4 filesystem",
ClusterSize = reiserSb.blocksize,
Clusters = ((partition.End - partition.Start) * imagePlugin.Info.SectorSize) / reiserSb.blocksize,
VolumeName = StringHandlers.CToString(reiserSb.label, Encoding),
VolumeSerial = reiserSb.uuid.ToString()
};
}
private BobFs(BlockSource source, bool caching = true)
{
Source = source;
_caching = caching;
_tmpBuffer = new byte[BlockSize];
Source.ReadAll(0, _tmpBuffer, 0, BlockSize);
_superBlock = Superblock.ReadFrom(_tmpBuffer);
}
public byte[] GetBytes(string volume)
{
IntPtr hDevice = NativeMethods.getHandle(volume);
using (FileStream streamToRead = NativeMethods.getFileStream(hDevice))
{
Superblock sb = new Superblock(Superblock.GetBytes(streamToRead, 0));
return NativeMethods.readDrive(streamToRead, (sb.BlockSize * this.StartBlock), (sb.BlockSize * this.BlockCount));
}
}
public ExternalFileListSlot(H5BinaryReader reader, Superblock superblock) : base(reader)
{
// name heap offset
this.NameHeapOffset = superblock.ReadLength(reader);
// offset
this.Offset = superblock.ReadLength(reader);
// size
this.Size = superblock.ReadLength(reader);
}
public SingleChunkIndexingInformation(H5BinaryReader reader, Superblock superblock, ChunkedStoragePropertyFlags flags) : base(reader)
{
if (flags.HasFlag(ChunkedStoragePropertyFlags.SINGLE_INDEX_WITH_FILTER))
{
// filtered chunk size
this.FilteredChunkSize = superblock.ReadLength(reader);
// chunk filters
this.ChunkFilters = reader.ReadUInt32();
}
}
/// <summary>
/// The ProcessRecord method instantiates a Superblock object based
/// on the disk given as an argument.
/// </summary>
protected override void ProcessRecord()
{
#region MBR
MasterBootRecord mbr = MasterBootRecord.Get(devicePath);
uint superblockOffset = 0;
foreach (PartitionEntry partition in mbr.PartitionTable)
{
if (partition.Bootable && partition.SystemID == "LINUX")
{
superblockOffset = partition.StartSector;
}
}
#endregion MBR
// Obtain a handle to the device named "devicePath"
IntPtr hDevice = NativeMethods.getHandle(devicePath);
using (FileStream streamToRead = NativeMethods.getFileStream(hDevice))
{
// Get Superblock to understand File System Layout
Superblock superBlock = new Superblock(Superblock.GetBytes(streamToRead, superblockOffset));
if (this.MyInvocation.BoundParameters.ContainsKey("GroupNumber"))
{
if (asbytes)
{
WriteObject(BlockGroupDescriptor.GetBytes(streamToRead, superblockOffset, superBlock, number));
}
else
{
WriteObject(new BlockGroupDescriptor(BlockGroupDescriptor.GetBytes(streamToRead, superblockOffset, superBlock, number)));
}
}
else
{
if (asbytes)
{
BlockGroupDescriptorTable.GetBytes(streamToRead, superblockOffset, superBlock);
}
else
{
byte[] bgdtBytes = BlockGroupDescriptorTable.GetBytes(streamToRead, superblockOffset, superBlock);
for (uint o = 0; o < bgdtBytes.Length; o += BlockGroupDescriptor.BLOCK_GROUP_DESCRIPTOR_LENGTH)
{
WriteObject(new BlockGroupDescriptor(NativeMethods.GetSubArray(bgdtBytes, o, BlockGroupDescriptor.BLOCK_GROUP_DESCRIPTOR_LENGTH)));
}
}
}
}
}
public DataBlockPage(H5BinaryReader reader,
Superblock superblock,
ulong elementsPerPage,
ClientID clientID,
uint chunkSizeLength)
{
// elements
this.Elements = ArrayIndexUtils.ReadElements(reader, superblock, elementsPerPage, clientID, chunkSizeLength);
// checksum
this.Checksum = reader.ReadUInt32();
}
public bool Identify(IMediaImage imagePlugin, Partition partition)
{
if (imagePlugin.Info.SectorSize < 512)
{
return(false);
}
byte[] sector = imagePlugin.ReadSector(partition.Start);
Superblock sb = Marshal.ByteArrayToStructureBigEndian <Superblock>(sector);
return(sb.magic == FATX_MAGIC || sb.magic == FATX_CIGAM);
}
public BTree2Record10(H5BinaryReader reader, Superblock superblock, byte rank)
{
// address
this.Address = superblock.ReadOffset(reader);
// scaled offsets
this.ScaledOffsets = new ulong[rank];
for (int i = 0; i < rank; i++)
{
this.ScaledOffsets[i] = reader.ReadUInt64();
}
}
public bool Identify(IMediaImage imagePlugin, Partition partition)
{
if (partition.Start + 1 >= imagePlugin.Info.Sectors)
{
return(false);
}
byte[] sector = imagePlugin.ReadSector(partition.Start + 1);
if (sector.Length < 512)
{
return(false);
}
Superblock qnxSb = Marshal.ByteArrayToStructureLittleEndian <Superblock>(sector);
// Check root directory name
if (!_rootDirFname.SequenceEqual(qnxSb.rootDir.di_fname))
{
return(false);
}
// Check sizes are multiple of blocks
if (qnxSb.rootDir.di_size % 512 != 0 ||
qnxSb.inode.di_size % 512 != 0 ||
qnxSb.boot.di_size % 512 != 0 ||
qnxSb.altBoot.di_size % 512 != 0)
{
return(false);
}
// Check extents are not past device
if (qnxSb.rootDir.di_first_xtnt.block + partition.Start >= partition.End ||
qnxSb.inode.di_first_xtnt.block + partition.Start >= partition.End ||
qnxSb.boot.di_first_xtnt.block + partition.Start >= partition.End ||
qnxSb.altBoot.di_first_xtnt.block + partition.Start >= partition.End)
{
return(false);
}
// Check inodes are in use
if ((qnxSb.rootDir.di_status & 0x01) != 0x01 ||
(qnxSb.inode.di_status & 0x01) != 0x01 ||
(qnxSb.boot.di_status & 0x01) != 0x01)
{
return(false);
}
// All hail filesystems without identification marks
return(true);
}
internal static byte[] GetBytes(FileStream streamToRead, uint superblockOffset, Superblock superBlock)
{
// Derive the location and length of the Block Group Descriptor Table
uint offset = (superblockOffset * NativeMethods.BYTES_PER_SECTOR) + ((superBlock.FirstDataBlock + 1) * superBlock.BlockSize);
uint bgdtEntries = (superBlock.TotalBlockCount / superBlock.BlocksPerGroup) + 1;
uint length = bgdtEntries * BlockGroupDescriptor.BLOCK_GROUP_DESCRIPTOR_LENGTH;
// Ensure the bgdtLength value is a multiple of 512 (minimum value for reading bytes from disk)
if ((length % NativeMethods.BYTES_PER_SECTOR) != 0)
{
length += (NativeMethods.BYTES_PER_SECTOR - (length % NativeMethods.BYTES_PER_SECTOR));
}
// Get BlockGroupDescriptor bytes
return NativeMethods.readDrive(streamToRead, offset, length);
}
public BlockGroups(byte[] fsByteArray, Superblock.Superblock superblock)
{
#warning Check this statement
int numberofBlockGroups = (superblock.BlocksPerGroup.Value % superblock.BlocksCount.Value);
if (numberofBlockGroups < 1) numberofBlockGroups = 1; //if there are too few blocks for a group
BinaryReader reader = new BinaryReader(new MemoryStream(fsByteArray)); //at this point we may have multiple copies of the FS in memory, figure out a way around this
reader.ReadBytes(1024); //advance past superblock
for (int i=0; i<numberofBlockGroups; i++)
{
byte[] buffer = new byte[31];
buffer = reader.ReadBytes(32);
Groups.Add(new BlockGroup(buffer));
}
}
public ChunkedStoragePropertyDescription3(H5BinaryReader reader, Superblock superblock) : base(reader)
{
// rank
this.Rank = reader.ReadByte();
// address
this.Address = superblock.ReadOffset(reader);
// dimension sizes
this.DimensionSizes = new uint[this.Rank];
for (uint i = 0; i < this.Rank; i++)
{
this.DimensionSizes[i] = reader.ReadUInt32();
}
}
public ObjectHeaderSharedMessageRecord(H5BinaryReader reader, Superblock superblock) : base(reader)
{
_superblock = superblock;
// hash value
this.HashValue = reader.ReadUInt32();
// reserved
reader.ReadByte();
// message type
this.MessageType = (HeaderMessageType)reader.ReadByte();
// creation index
this.CreationIndex = reader.ReadUInt16();
// object header address
this.ObjectHeaderAddress = superblock.ReadOffset(reader);
}
public bool Identify(IMediaImage imagePlugin, Partition partition)
{
if (imagePlugin.Info.SectorSize < 512)
{
return(false);
}
for (ulong location = 0; location <= 8; location++)
{
uint sbSize = (uint)(Marshal.SizeOf <Superblock>() / imagePlugin.Info.SectorSize);
if (Marshal.SizeOf <Superblock>() % imagePlugin.Info.SectorSize != 0)
{
sbSize++;
}
if (partition.Start + location + sbSize >= imagePlugin.Info.Sectors)
{
break;
}
byte[] sector = imagePlugin.ReadSectors(partition.Start + location, sbSize);
if (sector.Length < Marshal.SizeOf <Superblock>())
{
return(false);
}
Superblock locusSb = Marshal.ByteArrayToStructureLittleEndian <Superblock>(sector);
AaruConsole.DebugWriteLine("Locus plugin", "magic at {1} = 0x{0:X8}", locusSb.s_magic, location);
if (locusSb.s_magic == LOCUS_MAGIC ||
locusSb.s_magic == LOCUS_CIGAM ||
locusSb.s_magic == LOCUS_MAGIC_OLD ||
locusSb.s_magic == LOCUS_CIGAM_OLD)
{
return(true);
}
}
return(false);
}
public BTree2Record11(H5BinaryReader reader, Superblock superblock, byte rank, uint chunkSizeLength)
{
// address
this.Address = superblock.ReadOffset(reader);
// chunk size
this.ChunkSize = H5Utils.ReadUlong(reader, chunkSizeLength);
// filter mask
this.FilterMask = reader.ReadUInt32();
// scaled offsets
this.ScaledOffsets = new ulong[rank];
for (int i = 0; i < rank; i++)
{
this.ScaledOffsets[i] = reader.ReadUInt64();
}
}
internal static byte[] GetBytes(FileStream streamToRead, uint superblockOffset, Superblock superBlock, uint group)
{
// Derive the location and length of the Block Group Descriptor Table
uint bgdtOffset = (superblockOffset * NativeMethods.BYTES_PER_SECTOR) + ((superBlock.FirstDataBlock + 1) * superBlock.BlockSize);
uint bgdtEntries = (superBlock.TotalBlockCount / superBlock.BlocksPerGroup) + 1;
uint bgdtLength = bgdtEntries * BlockGroupDescriptor.BLOCK_GROUP_DESCRIPTOR_LENGTH;
// Determine the offset from the beginning of the BGDT to the desired group
uint groupOffset = group * BLOCK_GROUP_DESCRIPTOR_LENGTH;
// Determine what Sector contains the raw bytes
uint groupSectorOffset = groupOffset / NativeMethods.BYTES_PER_SECTOR;
// Read the sector that the desired block resides within
byte[] SectorBytes = NativeMethods.readDrive(streamToRead, bgdtOffset + (groupSectorOffset * NativeMethods.BYTES_PER_SECTOR), NativeMethods.BYTES_PER_SECTOR);
// Get Block Group Descriptor offset into Sector
uint sectorOffset = (group % BLOCK_GROUPS_PER_SECTOR) * BLOCK_GROUP_DESCRIPTOR_LENGTH;
// Create byte[] containing only bytes for the requested Block Group Descriptor
return NativeMethods.GetSubArray(SectorBytes, sectorOffset, BLOCK_GROUP_DESCRIPTOR_LENGTH);
}
public bool Identify(IMediaImage imagePlugin, Partition partition)
{
if (imagePlugin.Info.SectorSize < F2FS_MIN_SECTOR ||
imagePlugin.Info.SectorSize > F2FS_MAX_SECTOR)
{
return(false);
}
uint sbAddr = F2FS_SUPER_OFFSET / imagePlugin.Info.SectorSize;
if (sbAddr == 0)
{
sbAddr = 1;
}
uint sbSize = (uint)(Marshal.SizeOf <Superblock>() / imagePlugin.Info.SectorSize);
if (Marshal.SizeOf <Superblock>() % imagePlugin.Info.SectorSize != 0)
{
sbSize++;
}
if (partition.Start + sbAddr >= partition.End)
{
return(false);
}
byte[] sector = imagePlugin.ReadSectors(partition.Start + sbAddr, sbSize);
if (sector.Length < Marshal.SizeOf <Superblock>())
{
return(false);
}
Superblock sb = Marshal.ByteArrayToStructureLittleEndian <Superblock>(sector);
return(sb.magic == F2FS_MAGIC);
}
public bool Identify(IMediaImage imagePlugin, Partition partition)
{
if (imagePlugin.Info.SectorSize < 512)
{
return(false);
}
uint sbAddr = REISER_SUPER_OFFSET / imagePlugin.Info.SectorSize;
if (sbAddr == 0)
{
sbAddr = 1;
}
uint sbSize = (uint)(Marshal.SizeOf <Superblock>() / imagePlugin.Info.SectorSize);
if (Marshal.SizeOf <Superblock>() % imagePlugin.Info.SectorSize != 0)
{
sbSize++;
}
if (partition.Start + sbAddr + sbSize >= partition.End)
{
return(false);
}
byte[] sector = imagePlugin.ReadSectors(partition.Start + sbAddr, sbSize);
if (sector.Length < Marshal.SizeOf <Superblock>())
{
return(false);
}
Superblock reiserSb = Marshal.ByteArrayToStructureLittleEndian <Superblock>(sector);
return(_magic35.SequenceEqual(reiserSb.magic) || _magic36.SequenceEqual(reiserSb.magic) ||
_magicJr.SequenceEqual(reiserSb.magic));
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = encoding ?? Encoding.GetEncoding("iso-8859-15");
information = "";
byte[] sector = imagePlugin.ReadSector(partition.Start + 1);
if (sector.Length < 512)
{
return;
}
Superblock qnxSb = Marshal.ByteArrayToStructureLittleEndian <Superblock>(sector);
// Too much useless information
/*
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_fname = {0}", CurrentEncoding.GetString(qnxSb.rootDir.di_fname));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_size = {0}", qnxSb.rootDir.di_size);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_first_xtnt.block = {0}", qnxSb.rootDir.di_first_xtnt.block);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_first_xtnt.length = {0}", qnxSb.rootDir.di_first_xtnt.length);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_xblk = {0}", qnxSb.rootDir.di_xblk);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_ftime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.rootDir.di_ftime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_mtime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.rootDir.di_mtime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_atime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.rootDir.di_atime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_ctime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.rootDir.di_ctime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_num_xtnts = {0}", qnxSb.rootDir.di_num_xtnts);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_mode = {0}", Convert.ToString(qnxSb.rootDir.di_mode, 8));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_uid = {0}", qnxSb.rootDir.di_uid);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_gid = {0}", qnxSb.rootDir.di_gid);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_nlink = {0}", qnxSb.rootDir.di_nlink);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_zero = {0}", qnxSb.rootDir.di_zero);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_type = {0}", qnxSb.rootDir.di_type);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.rootDir.di_status = {0}", qnxSb.rootDir.di_status);
*
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_fname = {0}", CurrentEncoding.GetString(qnxSb.inode.di_fname));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_size = {0}", qnxSb.inode.di_size);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_first_xtnt.block = {0}", qnxSb.inode.di_first_xtnt.block);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_first_xtnt.length = {0}", qnxSb.inode.di_first_xtnt.length);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_xblk = {0}", qnxSb.inode.di_xblk);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_ftime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.inode.di_ftime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_mtime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.inode.di_mtime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_atime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.inode.di_atime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_ctime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.inode.di_ctime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_num_xtnts = {0}", qnxSb.inode.di_num_xtnts);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_mode = {0}", Convert.ToString(qnxSb.inode.di_mode, 8));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_uid = {0}", qnxSb.inode.di_uid);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_gid = {0}", qnxSb.inode.di_gid);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_nlink = {0}", qnxSb.inode.di_nlink);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_zero = {0}", qnxSb.inode.di_zero);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_type = {0}", qnxSb.inode.di_type);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.inode.di_status = {0}", qnxSb.inode.di_status);
*
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_fname = {0}", CurrentEncoding.GetString(qnxSb.boot.di_fname));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_size = {0}", qnxSb.boot.di_size);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_first_xtnt.block = {0}", qnxSb.boot.di_first_xtnt.block);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_first_xtnt.length = {0}", qnxSb.boot.di_first_xtnt.length);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_xblk = {0}", qnxSb.boot.di_xblk);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_ftime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.boot.di_ftime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_mtime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.boot.di_mtime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_atime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.boot.di_atime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_ctime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.boot.di_ctime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_num_xtnts = {0}", qnxSb.boot.di_num_xtnts);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_mode = {0}", Convert.ToString(qnxSb.boot.di_mode, 8));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_uid = {0}", qnxSb.boot.di_uid);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_gid = {0}", qnxSb.boot.di_gid);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_nlink = {0}", qnxSb.boot.di_nlink);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_zero = {0}", qnxSb.boot.di_zero);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_type = {0}", qnxSb.boot.di_type);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.boot.di_status = {0}", qnxSb.boot.di_status);
*
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_fname = {0}", CurrentEncoding.GetString(qnxSb.altBoot.di_fname));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_size = {0}", qnxSb.altBoot.di_size);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_first_xtnt.block = {0}", qnxSb.altBoot.di_first_xtnt.block);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_first_xtnt.length = {0}", qnxSb.altBoot.di_first_xtnt.length);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_xblk = {0}", qnxSb.altBoot.di_xblk);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_ftime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.altBoot.di_ftime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_mtime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.altBoot.di_mtime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_atime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.altBoot.di_atime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_ctime = {0}", DateHandlers.UNIXUnsignedToDateTime(qnxSb.altBoot.di_ctime));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_num_xtnts = {0}", qnxSb.altBoot.di_num_xtnts);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_mode = {0}", Convert.ToString(qnxSb.altBoot.di_mode, 8));
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_uid = {0}", qnxSb.altBoot.di_uid);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_gid = {0}", qnxSb.altBoot.di_gid);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_nlink = {0}", qnxSb.altBoot.di_nlink);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_zero = {0}", qnxSb.altBoot.di_zero);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_type = {0}", qnxSb.altBoot.di_type);
* AaruConsole.DebugWriteLine("QNX4 plugin", "qnxSb.altBoot.di_status = {0}", qnxSb.altBoot.di_status);
*/
information =
$"QNX4 filesystem\nCreated on {DateHandlers.UnixUnsignedToDateTime(qnxSb.rootDir.di_ftime)}\n";
XmlFsType = new FileSystemType
{
Type = "QNX4 filesystem",
Clusters = partition.Length,
ClusterSize = 512,
CreationDate = DateHandlers.UnixUnsignedToDateTime(qnxSb.rootDir.di_ftime),
CreationDateSpecified = true,
ModificationDate = DateHandlers.UnixUnsignedToDateTime(qnxSb.rootDir.di_mtime),
ModificationDateSpecified = true
};
XmlFsType.Bootable |= qnxSb.boot.di_size != 0 || qnxSb.altBoot.di_size != 0;
}
/// <summary>
///
/// </summary>
protected override void ProcessRecord()
{
#region MBR
MasterBootRecord mbr = MasterBootRecord.Get(devicePath);
uint superblockOffset = 0;
foreach (PartitionEntry partition in mbr.PartitionTable)
{
if (partition.Bootable && partition.SystemID == "LINUX")
{
superblockOffset = partition.StartSector;
}
}
#endregion MBR
// Obtain a handle to the device named "devicePath"
IntPtr hDevice = NativeMethods.getHandle(devicePath);
using (FileStream streamToRead = NativeMethods.getFileStream(hDevice))
{
// Get Superblock to understand File System Layout
Superblock superBlock = new Superblock(Superblock.GetBytes(streamToRead, superblockOffset));
if (this.MyInvocation.BoundParameters.ContainsKey("Inode"))
{
if (inode == 0)
{
throw new Exception("0 is not a valid Inode value.");
}
else
{
uint block_group = (inode - 1) / superBlock.InodesPerGroup;
BlockGroupDescriptor bgd = new BlockGroupDescriptor(BlockGroupDescriptorTable.GetBytes(streamToRead, superblockOffset, superBlock));
uint inodeTableOffset = (superblockOffset * NativeMethods.BYTES_PER_SECTOR) + (bgd.InodeTableOffset * superBlock.BlockSize);
uint inodeSectorOffset = (inode - 1) / (NativeMethods.BYTES_PER_SECTOR / (uint)superBlock.InodeSize);
byte[] SectorBytes = NativeMethods.readDrive(streamToRead, inodeTableOffset + (inodeSectorOffset * NativeMethods.BYTES_PER_SECTOR), NativeMethods.BYTES_PER_SECTOR);
uint sectorOffset = ((inode - 1) % (NativeMethods.BYTES_PER_SECTOR / (uint)superBlock.InodeSize)) * (uint)superBlock.InodeSize;
byte[] inodeBytes = NativeMethods.GetSubArray(SectorBytes, sectorOffset, (uint)superBlock.InodeSize);
if (asbytes)
{
WriteObject(inodeBytes);
}
else
{
WriteObject(new Inode(inodeBytes, inode));
}
}
}
else
{
// Create a byte array representing the BGDT
byte[] bgdtBytes = BlockGroupDescriptorTable.GetBytes(streamToRead, superblockOffset, superBlock);
// Iterate through BGDTs and output associate Inodes
for (uint o = 0; o < bgdtBytes.Length; o += BlockGroupDescriptor.BLOCK_GROUP_DESCRIPTOR_LENGTH)
{
BlockGroupDescriptor bgd = new BlockGroupDescriptor(NativeMethods.GetSubArray(bgdtBytes, o, BlockGroupDescriptor.BLOCK_GROUP_DESCRIPTOR_LENGTH));
uint inodeTableOffset = (superblockOffset * NativeMethods.BYTES_PER_SECTOR) + (bgd.InodeTableOffset * superBlock.BlockSize);
byte[] inodeTableBytes = InodeTable.GetBytes(streamToRead, superBlock, inodeTableOffset);
for (uint i = 0; i < inodeTableBytes.Length; i += (uint)superBlock.InodeSize)
{
uint inode = ((o / BlockGroupDescriptor.BLOCK_GROUP_DESCRIPTOR_LENGTH) + 1) * ((i / (uint)superBlock.InodeSize) + 1);
WriteObject(new Inode(NativeMethods.GetSubArray(inodeTableBytes, i, superBlock.InodeSize), inode));
}
}
}
}
}
/// <summary>
/// Выполняет инициализацию структур файловой системы.
/// </summary>
private void Initialize()
{
_superblock = (Superblock)ReadStruct(FileStream, typeof(Superblock));
CLUSTER_SIZE = _superblock.clusterFactor * DISK_BYTES_PER_SECTOR;
FileStream.Seek(_superblock.bitMapAddress, SeekOrigin.Begin);
byte[] bitMapData = new byte[_superblock.bitMapSize];
FileStream.Read(bitMapData, 0, bitMapData.Length);
_bitMap = new BitMap(bitMapData);
if (_superblock.filesystemType != DFS_ID)
{
throw new InvalidDataException("Неизвестный тип файлово системы! Возможно, диск был повреждён.");
}
_rootDirectory = ReadDirectoryClusters(0, null, true);
CurrentDirectory = _rootDirectory;
//_openedPath = "/";
}
public ObjectHeaderContinuationMessage(H5BinaryReader reader, Superblock superblock) : base(reader)
{
this.Offset = superblock.ReadOffset(reader);
this.Length = superblock.ReadLength(reader);
}
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
Encoding encoding)
{
Encoding = encoding ?? Encoding.GetEncoding("iso-8859-15");
information = "";
if (imagePlugin.Info.SectorSize < 512)
{
return;
}
uint sbAddr = REISER_SUPER_OFFSET / imagePlugin.Info.SectorSize;
if (sbAddr == 0)
{
sbAddr = 1;
}
uint sbSize = (uint)(Marshal.SizeOf <Superblock>() / imagePlugin.Info.SectorSize);
if (Marshal.SizeOf <Superblock>() % imagePlugin.Info.SectorSize != 0)
{
sbSize++;
}
byte[] sector = imagePlugin.ReadSectors(partition.Start + sbAddr, sbSize);
if (sector.Length < Marshal.SizeOf <Superblock>())
{
return;
}
Superblock reiserSb = Marshal.ByteArrayToStructureLittleEndian <Superblock>(sector);
if (!_magic35.SequenceEqual(reiserSb.magic) &&
!_magic36.SequenceEqual(reiserSb.magic) &&
!_magicJr.SequenceEqual(reiserSb.magic))
{
return;
}
var sb = new StringBuilder();
if (_magic35.SequenceEqual(reiserSb.magic))
{
sb.AppendLine("Reiser 3.5 filesystem");
}
else if (_magic36.SequenceEqual(reiserSb.magic))
{
sb.AppendLine("Reiser 3.6 filesystem");
}
else if (_magicJr.SequenceEqual(reiserSb.magic))
{
sb.AppendLine("Reiser Jr. filesystem");
}
sb.AppendFormat("Volume has {0} blocks with {1} blocks free", reiserSb.block_count, reiserSb.free_blocks).
AppendLine();
sb.AppendFormat("{0} bytes per block", reiserSb.blocksize).AppendLine();
sb.AppendFormat("Root directory resides on block {0}", reiserSb.root_block).AppendLine();
if (reiserSb.umount_state == 2)
{
sb.AppendLine("Volume has not been cleanly umounted");
}
sb.AppendFormat("Volume last checked on {0}", DateHandlers.UnixUnsignedToDateTime(reiserSb.last_check)).
AppendLine();
if (reiserSb.version >= 2)
{
sb.AppendFormat("Volume UUID: {0}", reiserSb.uuid).AppendLine();
sb.AppendFormat("Volume name: {0}", Encoding.GetString(reiserSb.label)).AppendLine();
}
information = sb.ToString();
XmlFsType = new FileSystemType();
if (_magic35.SequenceEqual(reiserSb.magic))
{
XmlFsType.Type = "Reiser 3.5 filesystem";
}
else if (_magic36.SequenceEqual(reiserSb.magic))
{
XmlFsType.Type = "Reiser 3.6 filesystem";
}
else if (_magicJr.SequenceEqual(reiserSb.magic))
{
XmlFsType.Type = "Reiser Jr. filesystem";
}
XmlFsType.ClusterSize = reiserSb.blocksize;
XmlFsType.Clusters = reiserSb.block_count;
XmlFsType.FreeClusters = reiserSb.free_blocks;
XmlFsType.FreeClustersSpecified = true;
XmlFsType.Dirty = reiserSb.umount_state == 2;
if (reiserSb.version < 2)
{
return;
}
XmlFsType.VolumeName = Encoding.GetString(reiserSb.label);
XmlFsType.VolumeSerial = reiserSb.uuid.ToString();
}
/// <summary>
///
/// </summary>
protected override void ProcessRecord()
{
#region MBR
MasterBootRecord mbr = MasterBootRecord.Get(devicePath);
uint superblockOffset = 0;
foreach (PartitionEntry partition in mbr.PartitionTable)
{
if (partition.Bootable && partition.SystemID == "LINUX")
{
superblockOffset = partition.StartSector;
}
}
#endregion MBR
// Obtain a handle to the device named "devicePath"
IntPtr hDevice = NativeMethods.getHandle(devicePath);
using (FileStream streamToRead = NativeMethods.getFileStream(hDevice))
{
// Get Superblock to understand File System Layout
Superblock superBlock = new Superblock(Superblock.GetBytes(streamToRead, superblockOffset));
if (this.MyInvocation.BoundParameters.ContainsKey("Inode"))
{
if (inode == 0)
{
throw new Exception("0 is not a valid Inode value.");
}
else
{
uint block_group = (inode - 1) / superBlock.InodesPerGroup;
BlockGroupDescriptor bgd = new BlockGroupDescriptor(BlockGroupDescriptorTable.GetBytes(streamToRead, superblockOffset, superBlock));
uint inodeTableOffset = (superblockOffset * NativeMethods.BYTES_PER_SECTOR) + (bgd.InodeTableOffset * superBlock.BlockSize);
uint inodeSectorOffset = (inode - 1) / (NativeMethods.BYTES_PER_SECTOR / (uint)superBlock.InodeSize);
byte[] SectorBytes = NativeMethods.readDrive(streamToRead, inodeTableOffset + (inodeSectorOffset * NativeMethods.BYTES_PER_SECTOR), NativeMethods.BYTES_PER_SECTOR);
uint sectorOffset = ((inode - 1) % (NativeMethods.BYTES_PER_SECTOR / (uint)superBlock.InodeSize)) * (uint)superBlock.InodeSize;
byte[] inodeBytes = NativeMethods.GetSubArray(SectorBytes, sectorOffset, (uint)superBlock.InodeSize);
if (asbytes)
{
WriteObject(inodeBytes);
}
else
{
WriteObject(new Inode(inodeBytes, inode));
}
}
}
else
{
// Create a byte array representing the BGDT
byte[] bgdtBytes = BlockGroupDescriptorTable.GetBytes(streamToRead, superblockOffset, superBlock);
// Iterate through BGDTs and output associate Inodes
for (uint o = 0; o < bgdtBytes.Length; o += BlockGroupDescriptor.BLOCK_GROUP_DESCRIPTOR_LENGTH)
{
BlockGroupDescriptor bgd = new BlockGroupDescriptor(NativeMethods.GetSubArray(bgdtBytes, o, BlockGroupDescriptor.BLOCK_GROUP_DESCRIPTOR_LENGTH));
uint inodeTableOffset = (superblockOffset * NativeMethods.BYTES_PER_SECTOR) + (bgd.InodeTableOffset * superBlock.BlockSize);
byte[] inodeTableBytes = InodeTable.GetBytes(streamToRead, superBlock, inodeTableOffset);
for (uint i = 0; i < inodeTableBytes.Length; i += (uint)superBlock.InodeSize)
{
uint inode = ((o / BlockGroupDescriptor.BLOCK_GROUP_DESCRIPTOR_LENGTH) + 1) * ((i / (uint)superBlock.InodeSize) + 1);
WriteObject(new Inode(NativeMethods.GetSubArray(inodeTableBytes, i, superBlock.InodeSize), inode));
}
}
}
}
}
/// <summary>
/// The ProcessRecord method instantiates a Superblock object based
/// on the disk given as an argument.
/// </summary>
protected override void ProcessRecord()
{
#region MBR
MasterBootRecord mbr = MasterBootRecord.Get(devicePath);
uint superblockOffset = 0;
foreach (PartitionEntry partition in mbr.PartitionTable)
{
if (partition.Bootable && partition.SystemID == "LINUX")
{
superblockOffset = partition.StartSector;
}
}
#endregion MBR
// Obtain a handle to the device named "devicePath"
IntPtr hDevice = NativeMethods.getHandle(devicePath);
using (FileStream streamToRead = NativeMethods.getFileStream(hDevice))
{
// Get Superblock to understand File System Layout
Superblock superBlock = new Superblock(Superblock.GetBytes(streamToRead, superblockOffset));
// Derive the location and length of the Block Group Descriptor Table
uint bgdtOffset = (superblockOffset * NativeMethods.BYTES_PER_SECTOR) + ((superBlock.FirstDataBlock + 1) * superBlock.BlockSize);
uint bgdtEntries = (superBlock.TotalBlockCount / superBlock.BlocksPerGroup) + 1;
uint bgdtLength = bgdtEntries * BlockGroupDescriptor.BLOCK_GROUP_DESCRIPTOR_LENGTH;
}
}
/// <summary>
/// Создаёт файл-образ раздела жёсткого диска с файловой системой DehaxFS с параметрами.
/// </summary>
/// <param name="diskPartitionSize">Размер раздела</param>
/// <param name="diskClusterFactor">Размер кластера, множитель секторов диска</param>
public DFSImage(long diskPartitionSize, byte diskClusterFactor)
{
diskClusterFactor = (byte)Math.Pow(2, diskClusterFactor - 1);
_diskPartitionSize = diskPartitionSize;
_diskClusterFactor = diskClusterFactor;
_diskClusterSize = DISK_BYTES_PER_SECTOR * diskClusterFactor;
_bitMap = new BitMap((int)(_diskPartitionSize / _diskClusterSize));
_inodes = new Inodes((int)(_diskPartitionSize / _diskClusterSize));
_rootDirectory = new RootDirectory(_diskClusterSize);
_emptyData = new byte[_diskPartitionSize - Marshal.SizeOf<Superblock>() - _bitMap.GetLength() - _inodes.GetLength() - _rootDirectory.GetLength()];
_superblock = new Superblock()
{
filesystemType = 0x28,
numClusters = (int)(_diskPartitionSize / _diskClusterSize),
clusterFactor = diskClusterFactor,
inodeArraySize = _inodes.GetLength(),
bitMapSize = _bitMap.GetLength(),
numFreeClusters = _emptyData.Length / _diskClusterSize,
numFreeInode = (int)(_diskPartitionSize / _diskClusterSize - 1)
};
InitializeFileSystem();
}
