public static MbrPartitionType GetType(HardDisk hdd, int index)
{
MbrHeader h;
hdd.Get(0, out h);
return(h.GetPartition(index).Type);
}
private GptHeader LoadHeader(HardDisk hdd, long offset)
{
GptHeader ret;
hdd.Get(offset, out ret); //LBA 1
if (ret.Signature != EfiMagic)
{
throw new Exception("Not a GPT.");
}
if (ret.Revision != CurrentRevision)
{
throw new Exception("Wrong rev.");
}
if (ret.HeaderSize < CurrentHeaderSize)
{
throw new Exception("Wrong header size.");
}
//TODO: check crc
if (ret.SizeOfPartitionEntry != ParitionEntrySize)
{
throw new Exception("Wrong ParitionEntrySize.");
}
//TODO: check partition entry CRC
if (ret.NumberOfPartitions == 0)
{
throw new Exception("No partitions!");
}
return(ret);
}
public unsafe VdiHardDisk(HardDisk hdd)
: base(hdd)
{
var headBytes = hdd.ReadBytes(0, sizeof(VdiHeader));
VdiHeader head = Program.ToStruct<VdiHeader>(headBytes);
if (head.ImageSig != VdiMagic)
throw new Exception("Wrong magic.");
if (head.Version != VdiVersion)
throw new Exception("Wrong version.");
if (head.SizeOfHeader != VdiHeadSize)
throw new Exception("Wrong size.");
if (head.ImageType != ImageType.Dynamic)
throw new NotImplementedException("Only dynamic is supported.");
var dataOffset = head.OffsetData;
mBlockOffsets = new long[head.BlocksInHdd];
mBlockSize = (int)head.BlockSize;
for (long i = 0; i < head.BlocksInHdd; i++)
{
uint blockLoc;
hdd.Get<uint>(head.OffsetBlocks + i * 4, out blockLoc);
if (blockLoc == ~0u)
mBlockOffsets[i] = -1;
else
mBlockOffsets[i] = dataOffset + blockLoc * mBlockSize;
}
}
public static bool IsMbr(HardDisk hdd)
{
MbrHeader h;
hdd.Get(0, out h);
return(h.BootSig == MbrHeader.MbrMagic);
}
private static T GetLba <T>(HardDisk hdd, long absoluteLba, long extraOffset) where T : struct
{
long byteOffset = absoluteLba * SectorSize + extraOffset;
T ret;
hdd.Get <T>(byteOffset, out ret);
return(ret);
}
public MbrHardDisk(HardDisk hdd, int partition)
{
hdd.Get(0, out mHeader);
//for now, always assume a GPT partition
if (!MbrHardDisk.IsMbr(hdd))
{
throw new Exception("Expected a MBR hdd.");
}
if (MbrHardDisk.GetType(hdd, 0) != MbrPartitionType.GptProtective)
{
throw new Exception("Expected a GPT protective MBR entry.");
}
mPartition = mHeader.GetPartition(partition);
Init(hdd, (long)mPartition.FirstSectorLba * MbrHeader.SectorSize, (long)mPartition.NumberOfSectors * MbrHeader.SectorSize);
}
unsafe public VdiHardDisk(HardDisk hdd)
: base(hdd)
{
var headBytes = hdd.ReadBytes(0, sizeof(VdiHeader));
VdiHeader head = Program.ToStruct <VdiHeader>(headBytes);
if (head.ImageSig != VdiMagic)
{
throw new Exception("Wrong magic.");
}
if (head.Version != VdiVersion)
{
throw new Exception("Wrong version.");
}
if (head.SizeOfHeader != VdiHeadSize)
{
throw new Exception("Wrong size.");
}
if (head.ImageType != ImageType.Dynamic)
{
throw new NotImplementedException("Only dynamic is supported.");
}
var dataOffset = head.OffsetData;
mBlockOffsets = new long[head.BlocksInHdd];
mBlockSize = (int)head.BlockSize;
for (long i = 0; i < head.BlocksInHdd; i++)
{
uint blockLoc;
hdd.Get <uint>(head.OffsetBlocks + i * 4, out blockLoc);
if (blockLoc == ~0u)
{
mBlockOffsets[i] = -1;
}
else
{
mBlockOffsets[i] = dataOffset + blockLoc * mBlockSize;
}
}
}
public MbrHardDisk(HardDisk hdd, int partition)
{
hdd.Get(0, out mHeader);
//for now, always assume a GPT partition
if (!MbrHardDisk.IsMbr(hdd))
throw new Exception("Expected a MBR hdd.");
if (MbrHardDisk.GetType(hdd, 0) != MbrPartitionType.GptProtective)
throw new Exception("Expected a GPT protective MBR entry.");
mPartition = mHeader.GetPartition(partition);
Init(hdd, (long)mPartition.FirstSectorLba * MbrHeader.SectorSize, (long)mPartition.NumberOfSectors * MbrHeader.SectorSize);
}
public static bool IsMbr(HardDisk hdd)
{
MbrHeader h;
hdd.Get(0, out h);
return h.BootSig == MbrHeader.MbrMagic;
}
public static MbrPartitionType GetType(HardDisk hdd, int index)
{
MbrHeader h;
hdd.Get(0, out h);
return h.GetPartition(index).Type;
}
