internal GPT(byte[] GPTBuffer)
{
this.GPTBuffer = GPTBuffer;
UInt32?TempHeaderOffset = ByteOperations.FindAscii(GPTBuffer, "EFI PART");
if (TempHeaderOffset == null)
{
throw new WPinternalsException("Bad GPT");
}
HeaderOffset = (UInt32)TempHeaderOffset;
HeaderSize = ByteOperations.ReadUInt32(GPTBuffer, HeaderOffset + 0x0C);
TableOffset = HeaderOffset + 0x200;
FirstUsableSector = ByteOperations.ReadUInt64(GPTBuffer, HeaderOffset + 0x28);
LastUsableSector = ByteOperations.ReadUInt64(GPTBuffer, HeaderOffset + 0x30);
MaxPartitions = ByteOperations.ReadUInt32(GPTBuffer, HeaderOffset + 0x50);
PartitionEntrySize = ByteOperations.ReadUInt32(GPTBuffer, HeaderOffset + 0x54);
TableSize = MaxPartitions * PartitionEntrySize;
if ((TableOffset + TableSize) > GPTBuffer.Length)
{
throw new WPinternalsException("Bad GPT");
}
UInt32 PartitionOffset = TableOffset;
while (PartitionOffset < (TableOffset + TableSize))
{
string Name = ByteOperations.ReadUnicodeString(GPTBuffer, PartitionOffset + 0x38, 0x48).TrimEnd(new char[] { (char)0, ' ' });
if (Name.Length == 0)
{
break;
}
Partition CurrentPartition = new Partition();
CurrentPartition.Name = Name;
CurrentPartition.FirstSector = ByteOperations.ReadUInt64(GPTBuffer, PartitionOffset + 0x20);
CurrentPartition.LastSector = ByteOperations.ReadUInt64(GPTBuffer, PartitionOffset + 0x28);
CurrentPartition.PartitionTypeGuid = ByteOperations.ReadGuid(GPTBuffer, PartitionOffset + 0x00);
CurrentPartition.PartitionGuid = ByteOperations.ReadGuid(GPTBuffer, PartitionOffset + 0x10);
CurrentPartition.Attributes = ByteOperations.ReadUInt64(GPTBuffer, PartitionOffset + 0x30);
Partitions.Add(CurrentPartition);
PartitionOffset += PartitionEntrySize;
}
HasChanged = false;
}
