mirror of
https://github.com/aaru-dps/Aaru.git
synced 2025-12-16 19:24:25 +00:00
Naming fixes.
This commit is contained in:
@@ -49,12 +49,12 @@ namespace Aaru.DiscImages
|
||||
|
||||
byte[] qHdrB = new byte[Marshal.SizeOf<QCow2Header>()];
|
||||
stream.Read(qHdrB, 0, Marshal.SizeOf<QCow2Header>());
|
||||
qHdr = Marshal.SpanToStructureBigEndian<QCow2Header>(qHdrB);
|
||||
_qHdr = Marshal.SpanToStructureBigEndian<QCow2Header>(qHdrB);
|
||||
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.magic = 0x{0:X8}", qHdr.magic);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.version = {0}", qHdr.version);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.magic = 0x{0:X8}", _qHdr.magic);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.version = {0}", _qHdr.version);
|
||||
|
||||
return qHdr.magic == QCOW_MAGIC && (qHdr.version == QCOW_VERSION2 || qHdr.version == QCOW_VERSION3);
|
||||
return _qHdr.magic == QCOW_MAGIC && (_qHdr.version == QCOW_VERSION2 || _qHdr.version == QCOW_VERSION3);
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -41,7 +41,7 @@ namespace Aaru.DiscImages
|
||||
{
|
||||
public partial class Qcow2
|
||||
{
|
||||
public ImageInfo Info => imageInfo;
|
||||
public ImageInfo Info => _imageInfo;
|
||||
|
||||
public string Name => "QEMU Copy-On-Write disk image v2";
|
||||
public Guid Id => new Guid("F20107CB-95B3-4398-894B-975261F1E8C5");
|
||||
|
||||
@@ -40,27 +40,27 @@ namespace Aaru.DiscImages
|
||||
{
|
||||
public partial class Qcow2 : IWritableImage
|
||||
{
|
||||
Dictionary<ulong, byte[]> clusterCache;
|
||||
int clusterSectors;
|
||||
int clusterSize;
|
||||
ImageInfo imageInfo;
|
||||
Stream imageStream;
|
||||
ulong l1Mask;
|
||||
int l1Shift;
|
||||
ulong[] l1Table;
|
||||
int l2Bits;
|
||||
ulong l2Mask;
|
||||
int l2Size;
|
||||
Dictionary<ulong, ulong[]> l2TableCache;
|
||||
int maxClusterCache;
|
||||
int maxL2TableCache;
|
||||
QCow2Header qHdr;
|
||||
ulong[] refCountTable;
|
||||
Dictionary<ulong, byte[]> sectorCache;
|
||||
ulong sectorMask;
|
||||
FileStream writingStream;
|
||||
Dictionary<ulong, byte[]> _clusterCache;
|
||||
int _clusterSectors;
|
||||
int _clusterSize;
|
||||
ImageInfo _imageInfo;
|
||||
Stream _imageStream;
|
||||
ulong _l1Mask;
|
||||
int _l1Shift;
|
||||
ulong[] _l1Table;
|
||||
int _l2Bits;
|
||||
ulong _l2Mask;
|
||||
int _l2Size;
|
||||
Dictionary<ulong, ulong[]> _l2TableCache;
|
||||
int _maxClusterCache;
|
||||
int _maxL2TableCache;
|
||||
QCow2Header _qHdr;
|
||||
ulong[] _refCountTable;
|
||||
Dictionary<ulong, byte[]> _sectorCache;
|
||||
ulong _sectorMask;
|
||||
FileStream _writingStream;
|
||||
|
||||
public Qcow2() => imageInfo = new ImageInfo
|
||||
public Qcow2() => _imageInfo = new ImageInfo
|
||||
{
|
||||
ReadableSectorTags = new List<SectorTagType>(),
|
||||
ReadableMediaTags = new List<MediaTagType>(),
|
||||
|
||||
@@ -58,173 +58,173 @@ namespace Aaru.DiscImages
|
||||
|
||||
byte[] qHdrB = new byte[Marshal.SizeOf<QCow2Header>()];
|
||||
stream.Read(qHdrB, 0, Marshal.SizeOf<QCow2Header>());
|
||||
qHdr = Marshal.SpanToStructureBigEndian<QCow2Header>(qHdrB);
|
||||
_qHdr = Marshal.SpanToStructureBigEndian<QCow2Header>(qHdrB);
|
||||
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.magic = 0x{0:X8}", qHdr.magic);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.version = {0}", qHdr.version);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.backing_file_offset = {0}", qHdr.backing_file_offset);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.backing_file_size = {0}", qHdr.backing_file_size);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.cluster_bits = {0}", qHdr.cluster_bits);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.size = {0}", qHdr.size);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.crypt_method = {0}", qHdr.crypt_method);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.l1_size = {0}", qHdr.l1_size);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.l1_table_offset = {0}", qHdr.l1_table_offset);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.refcount_table_offset = {0}", qHdr.refcount_table_offset);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.magic = 0x{0:X8}", _qHdr.magic);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.version = {0}", _qHdr.version);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.backing_file_offset = {0}", _qHdr.backing_file_offset);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.backing_file_size = {0}", _qHdr.backing_file_size);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.cluster_bits = {0}", _qHdr.cluster_bits);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.size = {0}", _qHdr.size);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.crypt_method = {0}", _qHdr.crypt_method);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.l1_size = {0}", _qHdr.l1_size);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.l1_table_offset = {0}", _qHdr.l1_table_offset);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.refcount_table_offset = {0}", _qHdr.refcount_table_offset);
|
||||
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.refcount_table_clusters = {0}",
|
||||
qHdr.refcount_table_clusters);
|
||||
_qHdr.refcount_table_clusters);
|
||||
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.nb_snapshots = {0}", qHdr.nb_snapshots);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.snapshots_offset = {0}", qHdr.snapshots_offset);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.nb_snapshots = {0}", _qHdr.nb_snapshots);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.snapshots_offset = {0}", _qHdr.snapshots_offset);
|
||||
|
||||
if(qHdr.version >= QCOW_VERSION3)
|
||||
if(_qHdr.version >= QCOW_VERSION3)
|
||||
{
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.features = {0:X}", qHdr.features);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.compat_features = {0:X}", qHdr.compat_features);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.autoclear_features = {0:X}", qHdr.autoclear_features);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.refcount_order = {0}", qHdr.refcount_order);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.header_length = {0}", qHdr.header_length);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.features = {0:X}", _qHdr.features);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.compat_features = {0:X}", _qHdr.compat_features);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.autoclear_features = {0:X}", _qHdr.autoclear_features);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.refcount_order = {0}", _qHdr.refcount_order);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.header_length = {0}", _qHdr.header_length);
|
||||
|
||||
if((qHdr.features & QCOW_FEATURE_MASK) != 0)
|
||||
if((_qHdr.features & QCOW_FEATURE_MASK) != 0)
|
||||
throw new
|
||||
ImageNotSupportedException($"Unknown incompatible features {qHdr.features & QCOW_FEATURE_MASK:X} enabled, not proceeding.");
|
||||
ImageNotSupportedException($"Unknown incompatible features {_qHdr.features & QCOW_FEATURE_MASK:X} enabled, not proceeding.");
|
||||
}
|
||||
|
||||
if(qHdr.size <= 1)
|
||||
throw new ArgumentOutOfRangeException(nameof(qHdr.size), "Image size is too small");
|
||||
if(_qHdr.size <= 1)
|
||||
throw new ArgumentOutOfRangeException(nameof(_qHdr.size), "Image size is too small");
|
||||
|
||||
if(qHdr.cluster_bits < 9 ||
|
||||
qHdr.cluster_bits > 16)
|
||||
throw new ArgumentOutOfRangeException(nameof(qHdr.cluster_bits),
|
||||
if(_qHdr.cluster_bits < 9 ||
|
||||
_qHdr.cluster_bits > 16)
|
||||
throw new ArgumentOutOfRangeException(nameof(_qHdr.cluster_bits),
|
||||
"Cluster size must be between 512 bytes and 64 Kbytes");
|
||||
|
||||
if(qHdr.crypt_method > QCOW_ENCRYPTION_AES)
|
||||
throw new ArgumentOutOfRangeException(nameof(qHdr.crypt_method), "Invalid encryption method");
|
||||
if(_qHdr.crypt_method > QCOW_ENCRYPTION_AES)
|
||||
throw new ArgumentOutOfRangeException(nameof(_qHdr.crypt_method), "Invalid encryption method");
|
||||
|
||||
if(qHdr.crypt_method > QCOW_ENCRYPTION_NONE)
|
||||
if(_qHdr.crypt_method > QCOW_ENCRYPTION_NONE)
|
||||
throw new NotImplementedException("AES encrypted images not yet supported");
|
||||
|
||||
if(qHdr.backing_file_offset != 0)
|
||||
if(_qHdr.backing_file_offset != 0)
|
||||
throw new NotImplementedException("Differencing images not yet supported");
|
||||
|
||||
clusterSize = 1 << (int)qHdr.cluster_bits;
|
||||
clusterSectors = 1 << ((int)qHdr.cluster_bits - 9);
|
||||
l2Bits = (int)(qHdr.cluster_bits - 3);
|
||||
l2Size = 1 << l2Bits;
|
||||
_clusterSize = 1 << (int)_qHdr.cluster_bits;
|
||||
_clusterSectors = 1 << ((int)_qHdr.cluster_bits - 9);
|
||||
_l2Bits = (int)(_qHdr.cluster_bits - 3);
|
||||
_l2Size = 1 << _l2Bits;
|
||||
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.clusterSize = {0}", clusterSize);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.clusterSectors = {0}", clusterSectors);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.qHdr.l1_size = {0}", qHdr.l1_size);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.l2Size = {0}", l2Size);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.sectors = {0}", imageInfo.Sectors);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.clusterSize = {0}", _clusterSize);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.clusterSectors = {0}", _clusterSectors);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.qHdr.l1_size = {0}", _qHdr.l1_size);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.l2Size = {0}", _l2Size);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.sectors = {0}", _imageInfo.Sectors);
|
||||
|
||||
byte[] l1TableB = new byte[qHdr.l1_size * 8];
|
||||
stream.Seek((long)qHdr.l1_table_offset, SeekOrigin.Begin);
|
||||
stream.Read(l1TableB, 0, (int)qHdr.l1_size * 8);
|
||||
l1Table = MemoryMarshal.Cast<byte, ulong>(l1TableB).ToArray();
|
||||
byte[] l1TableB = new byte[_qHdr.l1_size * 8];
|
||||
stream.Seek((long)_qHdr.l1_table_offset, SeekOrigin.Begin);
|
||||
stream.Read(l1TableB, 0, (int)_qHdr.l1_size * 8);
|
||||
_l1Table = MemoryMarshal.Cast<byte, ulong>(l1TableB).ToArray();
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "Reading L1 table");
|
||||
|
||||
for(long i = 0; i < l1Table.LongLength; i++)
|
||||
l1Table[i] = Swapping.Swap(l1Table[i]);
|
||||
for(long i = 0; i < _l1Table.LongLength; i++)
|
||||
_l1Table[i] = Swapping.Swap(_l1Table[i]);
|
||||
|
||||
l1Mask = 0;
|
||||
_l1Mask = 0;
|
||||
int c = 0;
|
||||
l1Shift = (int)(l2Bits + qHdr.cluster_bits);
|
||||
_l1Shift = (int)(_l2Bits + _qHdr.cluster_bits);
|
||||
|
||||
for(int i = 0; i < 64; i++)
|
||||
{
|
||||
l1Mask <<= 1;
|
||||
_l1Mask <<= 1;
|
||||
|
||||
if(c >= 64 - l1Shift)
|
||||
if(c >= 64 - _l1Shift)
|
||||
continue;
|
||||
|
||||
l1Mask += 1;
|
||||
_l1Mask += 1;
|
||||
c++;
|
||||
}
|
||||
|
||||
l2Mask = 0;
|
||||
_l2Mask = 0;
|
||||
|
||||
for(int i = 0; i < l2Bits; i++)
|
||||
l2Mask = (l2Mask << 1) + 1;
|
||||
for(int i = 0; i < _l2Bits; i++)
|
||||
_l2Mask = (_l2Mask << 1) + 1;
|
||||
|
||||
l2Mask <<= (int)qHdr.cluster_bits;
|
||||
_l2Mask <<= (int)_qHdr.cluster_bits;
|
||||
|
||||
sectorMask = 0;
|
||||
_sectorMask = 0;
|
||||
|
||||
for(int i = 0; i < qHdr.cluster_bits; i++)
|
||||
sectorMask = (sectorMask << 1) + 1;
|
||||
for(int i = 0; i < _qHdr.cluster_bits; i++)
|
||||
_sectorMask = (_sectorMask << 1) + 1;
|
||||
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.l1Mask = {0:X}", l1Mask);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.l1Shift = {0}", l1Shift);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.l2Mask = {0:X}", l2Mask);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.sectorMask = {0:X}", sectorMask);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.l1Mask = {0:X}", _l1Mask);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.l1Shift = {0}", _l1Shift);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.l2Mask = {0:X}", _l2Mask);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "qHdr.sectorMask = {0:X}", _sectorMask);
|
||||
|
||||
maxL2TableCache = MAX_CACHE_SIZE / (l2Size * 8);
|
||||
maxClusterCache = MAX_CACHE_SIZE / clusterSize;
|
||||
_maxL2TableCache = MAX_CACHE_SIZE / (_l2Size * 8);
|
||||
_maxClusterCache = MAX_CACHE_SIZE / _clusterSize;
|
||||
|
||||
imageStream = stream;
|
||||
_imageStream = stream;
|
||||
|
||||
sectorCache = new Dictionary<ulong, byte[]>();
|
||||
l2TableCache = new Dictionary<ulong, ulong[]>();
|
||||
clusterCache = new Dictionary<ulong, byte[]>();
|
||||
_sectorCache = new Dictionary<ulong, byte[]>();
|
||||
_l2TableCache = new Dictionary<ulong, ulong[]>();
|
||||
_clusterCache = new Dictionary<ulong, byte[]>();
|
||||
|
||||
imageInfo.CreationTime = imageFilter.GetCreationTime();
|
||||
imageInfo.LastModificationTime = imageFilter.GetLastWriteTime();
|
||||
imageInfo.MediaTitle = Path.GetFileNameWithoutExtension(imageFilter.GetFilename());
|
||||
imageInfo.Sectors = qHdr.size / 512;
|
||||
imageInfo.SectorSize = 512;
|
||||
imageInfo.XmlMediaType = XmlMediaType.BlockMedia;
|
||||
imageInfo.MediaType = MediaType.GENERIC_HDD;
|
||||
imageInfo.ImageSize = qHdr.size;
|
||||
imageInfo.Version = $"{qHdr.version}";
|
||||
_imageInfo.CreationTime = imageFilter.GetCreationTime();
|
||||
_imageInfo.LastModificationTime = imageFilter.GetLastWriteTime();
|
||||
_imageInfo.MediaTitle = Path.GetFileNameWithoutExtension(imageFilter.GetFilename());
|
||||
_imageInfo.Sectors = _qHdr.size / 512;
|
||||
_imageInfo.SectorSize = 512;
|
||||
_imageInfo.XmlMediaType = XmlMediaType.BlockMedia;
|
||||
_imageInfo.MediaType = MediaType.GENERIC_HDD;
|
||||
_imageInfo.ImageSize = _qHdr.size;
|
||||
_imageInfo.Version = $"{_qHdr.version}";
|
||||
|
||||
imageInfo.Cylinders = (uint)(imageInfo.Sectors / 16 / 63);
|
||||
imageInfo.Heads = 16;
|
||||
imageInfo.SectorsPerTrack = 63;
|
||||
_imageInfo.Cylinders = (uint)(_imageInfo.Sectors / 16 / 63);
|
||||
_imageInfo.Heads = 16;
|
||||
_imageInfo.SectorsPerTrack = 63;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
public byte[] ReadSector(ulong sectorAddress)
|
||||
{
|
||||
if(sectorAddress > imageInfo.Sectors - 1)
|
||||
if(sectorAddress > _imageInfo.Sectors - 1)
|
||||
throw new ArgumentOutOfRangeException(nameof(sectorAddress),
|
||||
$"Sector address {sectorAddress} not found");
|
||||
|
||||
// Check cache
|
||||
if(sectorCache.TryGetValue(sectorAddress, out byte[] sector))
|
||||
if(_sectorCache.TryGetValue(sectorAddress, out byte[] sector))
|
||||
return sector;
|
||||
|
||||
ulong byteAddress = sectorAddress * 512;
|
||||
|
||||
ulong l1Off = (byteAddress & l1Mask) >> l1Shift;
|
||||
ulong l1Off = (byteAddress & _l1Mask) >> _l1Shift;
|
||||
|
||||
if((long)l1Off >= l1Table.LongLength)
|
||||
if((long)l1Off >= _l1Table.LongLength)
|
||||
throw new ArgumentOutOfRangeException(nameof(l1Off),
|
||||
$"Trying to read past L1 table, position {l1Off} of a max {l1Table.LongLength}");
|
||||
$"Trying to read past L1 table, position {l1Off} of a max {_l1Table.LongLength}");
|
||||
|
||||
// TODO: Implement differential images
|
||||
if(l1Table[l1Off] == 0)
|
||||
if(_l1Table[l1Off] == 0)
|
||||
return new byte[512];
|
||||
|
||||
if(!l2TableCache.TryGetValue(l1Off, out ulong[] l2Table))
|
||||
if(!_l2TableCache.TryGetValue(l1Off, out ulong[] l2Table))
|
||||
{
|
||||
imageStream.Seek((long)(l1Table[l1Off] & QCOW_FLAGS_MASK), SeekOrigin.Begin);
|
||||
byte[] l2TableB = new byte[l2Size * 8];
|
||||
imageStream.Read(l2TableB, 0, l2Size * 8);
|
||||
_imageStream.Seek((long)(_l1Table[l1Off] & QCOW_FLAGS_MASK), SeekOrigin.Begin);
|
||||
byte[] l2TableB = new byte[_l2Size * 8];
|
||||
_imageStream.Read(l2TableB, 0, _l2Size * 8);
|
||||
AaruConsole.DebugWriteLine("QCOW plugin", "Reading L2 table #{0}", l1Off);
|
||||
l2Table = MemoryMarshal.Cast<byte, ulong>(l2TableB).ToArray();
|
||||
|
||||
for(long i = 0; i < l2Table.LongLength; i++)
|
||||
l2Table[i] = Swapping.Swap(l2Table[i]);
|
||||
|
||||
if(l2TableCache.Count >= maxL2TableCache)
|
||||
l2TableCache.Clear();
|
||||
if(_l2TableCache.Count >= _maxL2TableCache)
|
||||
_l2TableCache.Clear();
|
||||
|
||||
l2TableCache.Add(l1Off, l2Table);
|
||||
_l2TableCache.Add(l1Off, l2Table);
|
||||
}
|
||||
|
||||
ulong l2Off = (byteAddress & l2Mask) >> (int)qHdr.cluster_bits;
|
||||
ulong l2Off = (byteAddress & _l2Mask) >> (int)_qHdr.cluster_bits;
|
||||
|
||||
ulong offset = l2Table[l2Off];
|
||||
|
||||
@@ -232,12 +232,12 @@ namespace Aaru.DiscImages
|
||||
|
||||
if((offset & QCOW_FLAGS_MASK) != 0)
|
||||
{
|
||||
if(!clusterCache.TryGetValue(offset, out byte[] cluster))
|
||||
if(!_clusterCache.TryGetValue(offset, out byte[] cluster))
|
||||
{
|
||||
if((offset & QCOW_COMPRESSED) == QCOW_COMPRESSED)
|
||||
{
|
||||
ulong compSizeMask = (ulong)(1 << (int)(qHdr.cluster_bits - 8)) - 1;
|
||||
byte countbits = (byte)(qHdr.cluster_bits - 8);
|
||||
ulong compSizeMask = (ulong)(1 << (int)(_qHdr.cluster_bits - 8)) - 1;
|
||||
byte countbits = (byte)(_qHdr.cluster_bits - 8);
|
||||
compSizeMask <<= 62 - countbits;
|
||||
ulong offMask = ~compSizeMask & QCOW_FLAGS_MASK;
|
||||
|
||||
@@ -245,48 +245,48 @@ namespace Aaru.DiscImages
|
||||
ulong compSize = (((offset & compSizeMask) >> (62 - countbits)) + 1) * 512;
|
||||
|
||||
byte[] zCluster = new byte[compSize];
|
||||
imageStream.Seek((long)realOff, SeekOrigin.Begin);
|
||||
imageStream.Read(zCluster, 0, (int)compSize);
|
||||
_imageStream.Seek((long)realOff, SeekOrigin.Begin);
|
||||
_imageStream.Read(zCluster, 0, (int)compSize);
|
||||
|
||||
var zStream = new DeflateStream(new MemoryStream(zCluster), CompressionMode.Decompress);
|
||||
cluster = new byte[clusterSize];
|
||||
int read = zStream.Read(cluster, 0, clusterSize);
|
||||
cluster = new byte[_clusterSize];
|
||||
int read = zStream.Read(cluster, 0, _clusterSize);
|
||||
|
||||
if(read != clusterSize)
|
||||
if(read != _clusterSize)
|
||||
throw new
|
||||
IOException($"Unable to decompress cluster, expected {clusterSize} bytes got {read}");
|
||||
IOException($"Unable to decompress cluster, expected {_clusterSize} bytes got {read}");
|
||||
}
|
||||
else
|
||||
{
|
||||
cluster = new byte[clusterSize];
|
||||
imageStream.Seek((long)(offset & QCOW_FLAGS_MASK), SeekOrigin.Begin);
|
||||
imageStream.Read(cluster, 0, clusterSize);
|
||||
cluster = new byte[_clusterSize];
|
||||
_imageStream.Seek((long)(offset & QCOW_FLAGS_MASK), SeekOrigin.Begin);
|
||||
_imageStream.Read(cluster, 0, _clusterSize);
|
||||
}
|
||||
|
||||
if(clusterCache.Count >= maxClusterCache)
|
||||
clusterCache.Clear();
|
||||
if(_clusterCache.Count >= _maxClusterCache)
|
||||
_clusterCache.Clear();
|
||||
|
||||
clusterCache.Add(offset, cluster);
|
||||
_clusterCache.Add(offset, cluster);
|
||||
}
|
||||
|
||||
Array.Copy(cluster, (int)(byteAddress & sectorMask), sector, 0, 512);
|
||||
Array.Copy(cluster, (int)(byteAddress & _sectorMask), sector, 0, 512);
|
||||
}
|
||||
|
||||
if(sectorCache.Count >= MAX_CACHED_SECTORS)
|
||||
sectorCache.Clear();
|
||||
if(_sectorCache.Count >= MAX_CACHED_SECTORS)
|
||||
_sectorCache.Clear();
|
||||
|
||||
sectorCache.Add(sectorAddress, sector);
|
||||
_sectorCache.Add(sectorAddress, sector);
|
||||
|
||||
return sector;
|
||||
}
|
||||
|
||||
public byte[] ReadSectors(ulong sectorAddress, uint length)
|
||||
{
|
||||
if(sectorAddress > imageInfo.Sectors - 1)
|
||||
if(sectorAddress > _imageInfo.Sectors - 1)
|
||||
throw new ArgumentOutOfRangeException(nameof(sectorAddress),
|
||||
$"Sector address {sectorAddress} not found");
|
||||
|
||||
if(sectorAddress + length > imageInfo.Sectors)
|
||||
if(sectorAddress + length > _imageInfo.Sectors)
|
||||
throw new ArgumentOutOfRangeException(nameof(length), "Requested more sectors than available");
|
||||
|
||||
var ms = new MemoryStream();
|
||||
|
||||
@@ -71,7 +71,7 @@ namespace Aaru.DiscImages
|
||||
return false;
|
||||
}
|
||||
|
||||
imageInfo = new ImageInfo
|
||||
_imageInfo = new ImageInfo
|
||||
{
|
||||
MediaType = mediaType,
|
||||
SectorSize = sectorSize,
|
||||
@@ -80,7 +80,7 @@ namespace Aaru.DiscImages
|
||||
|
||||
try
|
||||
{
|
||||
writingStream = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None);
|
||||
_writingStream = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None);
|
||||
}
|
||||
catch(IOException e)
|
||||
{
|
||||
@@ -92,7 +92,7 @@ namespace Aaru.DiscImages
|
||||
string extension = Path.GetExtension(path);
|
||||
bool version3 = extension == ".qcow3" || extension == ".qc3";
|
||||
|
||||
qHdr = new QCow2Header
|
||||
_qHdr = new QCow2Header
|
||||
{
|
||||
magic = QCOW_MAGIC,
|
||||
version = version3 ? QCOW_VERSION3 : QCOW_VERSION2,
|
||||
@@ -101,66 +101,66 @@ namespace Aaru.DiscImages
|
||||
header_length = (uint)Marshal.SizeOf<QCow2Header>()
|
||||
};
|
||||
|
||||
clusterSize = 1 << (int)qHdr.cluster_bits;
|
||||
clusterSectors = 1 << ((int)qHdr.cluster_bits - 9);
|
||||
l2Bits = (int)(qHdr.cluster_bits - 3);
|
||||
l2Size = 1 << l2Bits;
|
||||
_clusterSize = 1 << (int)_qHdr.cluster_bits;
|
||||
_clusterSectors = 1 << ((int)_qHdr.cluster_bits - 9);
|
||||
_l2Bits = (int)(_qHdr.cluster_bits - 3);
|
||||
_l2Size = 1 << _l2Bits;
|
||||
|
||||
l1Mask = 0;
|
||||
_l1Mask = 0;
|
||||
int c = 0;
|
||||
l1Shift = (int)(l2Bits + qHdr.cluster_bits);
|
||||
_l1Shift = (int)(_l2Bits + _qHdr.cluster_bits);
|
||||
|
||||
for(int i = 0; i < 64; i++)
|
||||
{
|
||||
l1Mask <<= 1;
|
||||
_l1Mask <<= 1;
|
||||
|
||||
if(c >= 64 - l1Shift)
|
||||
if(c >= 64 - _l1Shift)
|
||||
continue;
|
||||
|
||||
l1Mask += 1;
|
||||
_l1Mask += 1;
|
||||
c++;
|
||||
}
|
||||
|
||||
l2Mask = 0;
|
||||
_l2Mask = 0;
|
||||
|
||||
for(int i = 0; i < l2Bits; i++)
|
||||
l2Mask = (l2Mask << 1) + 1;
|
||||
for(int i = 0; i < _l2Bits; i++)
|
||||
_l2Mask = (_l2Mask << 1) + 1;
|
||||
|
||||
l2Mask <<= (int)qHdr.cluster_bits;
|
||||
_l2Mask <<= (int)_qHdr.cluster_bits;
|
||||
|
||||
sectorMask = 0;
|
||||
_sectorMask = 0;
|
||||
|
||||
for(int i = 0; i < qHdr.cluster_bits; i++)
|
||||
sectorMask = (sectorMask << 1) + 1;
|
||||
for(int i = 0; i < _qHdr.cluster_bits; i++)
|
||||
_sectorMask = (_sectorMask << 1) + 1;
|
||||
|
||||
qHdr.l1_size = (uint)(qHdr.size >> l1Shift);
|
||||
_qHdr.l1_size = (uint)(_qHdr.size >> _l1Shift);
|
||||
|
||||
if(qHdr.l1_size == 0)
|
||||
qHdr.l1_size = 1;
|
||||
if(_qHdr.l1_size == 0)
|
||||
_qHdr.l1_size = 1;
|
||||
|
||||
l1Table = new ulong[qHdr.l1_size];
|
||||
_l1Table = new ulong[_qHdr.l1_size];
|
||||
|
||||
ulong clusters = qHdr.size / (ulong)clusterSize;
|
||||
ulong refCountBlocks = (clusters * 2) / (ulong)clusterSize;
|
||||
ulong clusters = _qHdr.size / (ulong)_clusterSize;
|
||||
ulong refCountBlocks = (clusters * 2) / (ulong)_clusterSize;
|
||||
|
||||
if(refCountBlocks == 0)
|
||||
refCountBlocks = 1;
|
||||
|
||||
qHdr.refcount_table_offset = (ulong)clusterSize;
|
||||
qHdr.refcount_table_clusters = (uint)((refCountBlocks * 8) / (ulong)clusterSize);
|
||||
_qHdr.refcount_table_offset = (ulong)_clusterSize;
|
||||
_qHdr.refcount_table_clusters = (uint)((refCountBlocks * 8) / (ulong)_clusterSize);
|
||||
|
||||
if(qHdr.refcount_table_clusters == 0)
|
||||
qHdr.refcount_table_clusters = 1;
|
||||
if(_qHdr.refcount_table_clusters == 0)
|
||||
_qHdr.refcount_table_clusters = 1;
|
||||
|
||||
refCountTable = new ulong[refCountBlocks];
|
||||
qHdr.l1_table_offset = qHdr.refcount_table_offset + (ulong)(qHdr.refcount_table_clusters * clusterSize);
|
||||
ulong l1TableClusters = (qHdr.l1_size * 8) / (ulong)clusterSize;
|
||||
_refCountTable = new ulong[refCountBlocks];
|
||||
_qHdr.l1_table_offset = _qHdr.refcount_table_offset + (ulong)(_qHdr.refcount_table_clusters * _clusterSize);
|
||||
ulong l1TableClusters = (_qHdr.l1_size * 8) / (ulong)_clusterSize;
|
||||
|
||||
if(l1TableClusters == 0)
|
||||
l1TableClusters = 1;
|
||||
|
||||
byte[] empty = new byte[qHdr.l1_table_offset + (l1TableClusters * (ulong)clusterSize)];
|
||||
writingStream.Write(empty, 0, empty.Length);
|
||||
byte[] empty = new byte[_qHdr.l1_table_offset + (l1TableClusters * (ulong)_clusterSize)];
|
||||
_writingStream.Write(empty, 0, empty.Length);
|
||||
|
||||
IsWriting = true;
|
||||
ErrorMessage = null;
|
||||
@@ -184,14 +184,14 @@ namespace Aaru.DiscImages
|
||||
return false;
|
||||
}
|
||||
|
||||
if(data.Length != imageInfo.SectorSize)
|
||||
if(data.Length != _imageInfo.SectorSize)
|
||||
{
|
||||
ErrorMessage = "Incorrect data size";
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
if(sectorAddress >= imageInfo.Sectors)
|
||||
if(sectorAddress >= _imageInfo.Sectors)
|
||||
{
|
||||
ErrorMessage = "Tried to write past image size";
|
||||
|
||||
@@ -204,63 +204,63 @@ namespace Aaru.DiscImages
|
||||
|
||||
ulong byteAddress = sectorAddress * 512;
|
||||
|
||||
ulong l1Off = (byteAddress & l1Mask) >> l1Shift;
|
||||
ulong l1Off = (byteAddress & _l1Mask) >> _l1Shift;
|
||||
|
||||
if((long)l1Off >= l1Table.LongLength)
|
||||
if((long)l1Off >= _l1Table.LongLength)
|
||||
throw new ArgumentOutOfRangeException(nameof(l1Off),
|
||||
$"Trying to write past L1 table, position {l1Off} of a max {l1Table.LongLength}");
|
||||
$"Trying to write past L1 table, position {l1Off} of a max {_l1Table.LongLength}");
|
||||
|
||||
if(l1Table[l1Off] == 0)
|
||||
if(_l1Table[l1Off] == 0)
|
||||
{
|
||||
writingStream.Seek(0, SeekOrigin.End);
|
||||
l1Table[l1Off] = (ulong)writingStream.Position;
|
||||
byte[] l2TableB = new byte[l2Size * 8];
|
||||
writingStream.Seek(0, SeekOrigin.End);
|
||||
writingStream.Write(l2TableB, 0, l2TableB.Length);
|
||||
_writingStream.Seek(0, SeekOrigin.End);
|
||||
_l1Table[l1Off] = (ulong)_writingStream.Position;
|
||||
byte[] l2TableB = new byte[_l2Size * 8];
|
||||
_writingStream.Seek(0, SeekOrigin.End);
|
||||
_writingStream.Write(l2TableB, 0, l2TableB.Length);
|
||||
}
|
||||
|
||||
writingStream.Position = (long)l1Table[l1Off];
|
||||
_writingStream.Position = (long)_l1Table[l1Off];
|
||||
|
||||
ulong l2Off = (byteAddress & l2Mask) >> (int)qHdr.cluster_bits;
|
||||
ulong l2Off = (byteAddress & _l2Mask) >> (int)_qHdr.cluster_bits;
|
||||
|
||||
writingStream.Seek((long)(l1Table[l1Off] + (l2Off * 8)), SeekOrigin.Begin);
|
||||
_writingStream.Seek((long)(_l1Table[l1Off] + (l2Off * 8)), SeekOrigin.Begin);
|
||||
|
||||
byte[] entry = new byte[8];
|
||||
writingStream.Read(entry, 0, 8);
|
||||
_writingStream.Read(entry, 0, 8);
|
||||
ulong offset = BigEndianBitConverter.ToUInt64(entry, 0);
|
||||
|
||||
if(offset == 0)
|
||||
{
|
||||
offset = (ulong)writingStream.Length;
|
||||
byte[] cluster = new byte[clusterSize];
|
||||
offset = (ulong)_writingStream.Length;
|
||||
byte[] cluster = new byte[_clusterSize];
|
||||
entry = BigEndianBitConverter.GetBytes(offset);
|
||||
writingStream.Seek((long)(l1Table[l1Off] + (l2Off * 8)), SeekOrigin.Begin);
|
||||
writingStream.Write(entry, 0, 8);
|
||||
writingStream.Seek(0, SeekOrigin.End);
|
||||
writingStream.Write(cluster, 0, cluster.Length);
|
||||
_writingStream.Seek((long)(_l1Table[l1Off] + (l2Off * 8)), SeekOrigin.Begin);
|
||||
_writingStream.Write(entry, 0, 8);
|
||||
_writingStream.Seek(0, SeekOrigin.End);
|
||||
_writingStream.Write(cluster, 0, cluster.Length);
|
||||
}
|
||||
|
||||
writingStream.Seek((long)(offset + (byteAddress & sectorMask)), SeekOrigin.Begin);
|
||||
writingStream.Write(data, 0, data.Length);
|
||||
_writingStream.Seek((long)(offset + (byteAddress & _sectorMask)), SeekOrigin.Begin);
|
||||
_writingStream.Write(data, 0, data.Length);
|
||||
|
||||
int refCountBlockEntries = (clusterSize * 8) / 16;
|
||||
ulong refCountBlockIndex = (offset / (ulong)clusterSize) % (ulong)refCountBlockEntries;
|
||||
ulong refCountTableIndex = offset / (ulong)clusterSize / (ulong)refCountBlockEntries;
|
||||
int refCountBlockEntries = (_clusterSize * 8) / 16;
|
||||
ulong refCountBlockIndex = (offset / (ulong)_clusterSize) % (ulong)refCountBlockEntries;
|
||||
ulong refCountTableIndex = offset / (ulong)_clusterSize / (ulong)refCountBlockEntries;
|
||||
|
||||
ulong refBlockOffset = refCountTable[refCountTableIndex];
|
||||
ulong refBlockOffset = _refCountTable[refCountTableIndex];
|
||||
|
||||
if(refBlockOffset == 0)
|
||||
{
|
||||
refBlockOffset = (ulong)writingStream.Length;
|
||||
refCountTable[refCountTableIndex] = refBlockOffset;
|
||||
byte[] cluster = new byte[clusterSize];
|
||||
writingStream.Seek(0, SeekOrigin.End);
|
||||
writingStream.Write(cluster, 0, cluster.Length);
|
||||
refBlockOffset = (ulong)_writingStream.Length;
|
||||
_refCountTable[refCountTableIndex] = refBlockOffset;
|
||||
byte[] cluster = new byte[_clusterSize];
|
||||
_writingStream.Seek(0, SeekOrigin.End);
|
||||
_writingStream.Write(cluster, 0, cluster.Length);
|
||||
}
|
||||
|
||||
writingStream.Seek((long)(refBlockOffset + refCountBlockIndex), SeekOrigin.Begin);
|
||||
_writingStream.Seek((long)(refBlockOffset + refCountBlockIndex), SeekOrigin.Begin);
|
||||
|
||||
writingStream.Write(new byte[]
|
||||
_writingStream.Write(new byte[]
|
||||
{
|
||||
0, 1
|
||||
}, 0, 2);
|
||||
@@ -280,14 +280,14 @@ namespace Aaru.DiscImages
|
||||
return false;
|
||||
}
|
||||
|
||||
if(data.Length % imageInfo.SectorSize != 0)
|
||||
if(data.Length % _imageInfo.SectorSize != 0)
|
||||
{
|
||||
ErrorMessage = "Incorrect data size";
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
if(sectorAddress + length > imageInfo.Sectors)
|
||||
if(sectorAddress + length > _imageInfo.Sectors)
|
||||
{
|
||||
ErrorMessage = "Tried to write past image size";
|
||||
|
||||
@@ -300,8 +300,8 @@ namespace Aaru.DiscImages
|
||||
|
||||
for(uint i = 0; i < length; i++)
|
||||
{
|
||||
byte[] tmp = new byte[imageInfo.SectorSize];
|
||||
Array.Copy(data, i * imageInfo.SectorSize, tmp, 0, imageInfo.SectorSize);
|
||||
byte[] tmp = new byte[_imageInfo.SectorSize];
|
||||
Array.Copy(data, i * _imageInfo.SectorSize, tmp, 0, _imageInfo.SectorSize);
|
||||
|
||||
if(!WriteSector(tmp, sectorAddress + i))
|
||||
return false;
|
||||
@@ -335,45 +335,45 @@ namespace Aaru.DiscImages
|
||||
return false;
|
||||
}
|
||||
|
||||
writingStream.Seek(0, SeekOrigin.Begin);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.magic), 0, 4);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.version), 0, 4);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.backing_file_offset), 0, 8);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.backing_file_size), 0, 4);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.cluster_bits), 0, 4);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.size), 0, 8);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.crypt_method), 0, 4);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.l1_size), 0, 4);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.l1_table_offset), 0, 8);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.refcount_table_offset), 0, 8);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.refcount_table_clusters), 0, 4);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.nb_snapshots), 0, 4);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.snapshots_offset), 0, 8);
|
||||
_writingStream.Seek(0, SeekOrigin.Begin);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.magic), 0, 4);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.version), 0, 4);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.backing_file_offset), 0, 8);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.backing_file_size), 0, 4);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.cluster_bits), 0, 4);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.size), 0, 8);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.crypt_method), 0, 4);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.l1_size), 0, 4);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.l1_table_offset), 0, 8);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.refcount_table_offset), 0, 8);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.refcount_table_clusters), 0, 4);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.nb_snapshots), 0, 4);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.snapshots_offset), 0, 8);
|
||||
|
||||
if(qHdr.version == QCOW_VERSION3)
|
||||
if(_qHdr.version == QCOW_VERSION3)
|
||||
{
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.features), 0, 8);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.compat_features), 0, 8);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.autoclear_features), 0, 8);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.refcount_order), 0, 4);
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(qHdr.header_length), 0, 4);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.features), 0, 8);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.compat_features), 0, 8);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.autoclear_features), 0, 8);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.refcount_order), 0, 4);
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_qHdr.header_length), 0, 4);
|
||||
}
|
||||
|
||||
writingStream.Seek((long)qHdr.refcount_table_offset, SeekOrigin.Begin);
|
||||
_writingStream.Seek((long)_qHdr.refcount_table_offset, SeekOrigin.Begin);
|
||||
|
||||
for(long i = 0; i < refCountTable.LongLength; i++)
|
||||
writingStream.Write(BigEndianBitConverter.GetBytes(refCountTable[i]), 0, 8);
|
||||
for(long i = 0; i < _refCountTable.LongLength; i++)
|
||||
_writingStream.Write(BigEndianBitConverter.GetBytes(_refCountTable[i]), 0, 8);
|
||||
|
||||
writingStream.Seek((long)qHdr.l1_table_offset, SeekOrigin.Begin);
|
||||
_writingStream.Seek((long)_qHdr.l1_table_offset, SeekOrigin.Begin);
|
||||
|
||||
for(long i = 0; i < l1Table.LongLength; i++)
|
||||
l1Table[i] = Swapping.Swap(l1Table[i]);
|
||||
for(long i = 0; i < _l1Table.LongLength; i++)
|
||||
_l1Table[i] = Swapping.Swap(_l1Table[i]);
|
||||
|
||||
byte[] l1TableB = MemoryMarshal.Cast<ulong, byte>(l1Table).ToArray();
|
||||
writingStream.Write(l1TableB, 0, l1TableB.Length);
|
||||
byte[] l1TableB = MemoryMarshal.Cast<ulong, byte>(_l1Table).ToArray();
|
||||
_writingStream.Write(l1TableB, 0, l1TableB.Length);
|
||||
|
||||
writingStream.Flush();
|
||||
writingStream.Close();
|
||||
_writingStream.Flush();
|
||||
_writingStream.Close();
|
||||
|
||||
IsWriting = false;
|
||||
ErrorMessage = "";
|
||||
|
||||
Reference in New Issue
Block a user