internal GuidPartitionTable(byte[] bytes)
{
#region Header
GuidPartitionTableHeader GPTHeader = new GuidPartitionTableHeader(Helper.GetSubArray(bytes, 0x00, SECTOR_SIZE));
Revision = GPTHeader.Revision;
HeaderSize = GPTHeader.HeaderSize;
MyLBA = GPTHeader.MyLBA;
AlternateLBA = GPTHeader.AlternateLBA;
FirstUsableLBA = GPTHeader.FirstUsableLBA;
LastUsableLBA = GPTHeader.LastUsableLBA;
DiskGuid = GPTHeader.DiskGUID;
PartitionEntryLBA = GPTHeader.PartitionEntryLBA;
NumberOfPartitionEntries = GPTHeader.NumberOfPartitionEntries;
SizeOfPartitionEntry = GPTHeader.SizeOfPartitionEntry;
#endregion Header
// Get PartitionTable
List <GuidPartitionTableEntry> partitionList = new List <GuidPartitionTableEntry>();
for (int i = 0; i < (bytes.Length - SECTOR_SIZE); i += (int)GPTHeader.SizeOfPartitionEntry)
{
// Instantiate a GuidPartitionTableEntry object
GuidPartitionTableEntry entry = new GuidPartitionTableEntry(Helper.GetSubArray(bytes, (i + SECTOR_SIZE), (int)GPTHeader.SizeOfPartitionEntry));
// If entry's PartitionTypeGUID is 00000000-0000-0000-0000-000000000000 then it is not a partition
if (entry.PartitionTypeGuid == new Guid("00000000-0000-0000-0000-000000000000"))
{
break;
}
partitionList.Add(entry);
}
PartitionTable = partitionList.ToArray();
}
/// <summary>
///
/// </summary>
/// <param name="bytes"></param>
/// <param name="partitionCount"></param>
/// <param name="partitionSize"></param>
/// <returns></returns>
internal static GuidPartitionTableEntry[] GetInstances(byte[] bytes, uint partitionCount, uint partitionSize)
{
// Get PartitionTable
List <GuidPartitionTableEntry> partitionList = new List <GuidPartitionTableEntry>();
// Iterate through Partition Entries
for (int i = GuidPartitionTable.SECTOR_SIZE; i < bytes.Length; i += (int)partitionSize)
{
// Instantiate a GuidPartitionTableEntry object
GuidPartitionTableEntry entry = new GuidPartitionTableEntry(bytes, i);
// If entry's StartingLBA is 0 then it is not a partition
if (entry.StartingLBA == 0)
{
break;
}
partitionList.Add(entry);
}
return(partitionList.ToArray());
}
private GuidPartitionTable(string devicePath)
{
byte[] bytes = GuidPartitionTable.GetBytes(devicePath);
// Test GPT Signature
Signature = Encoding.ASCII.GetString(bytes, 0x00, 0x08);
if (Signature == SIGNATURE_STRING)
{
Revision = new Version(BitConverter.ToUInt16(bytes, 0x08), BitConverter.ToUInt16(bytes, 0x0A));
HeaderSize = BitConverter.ToUInt32(bytes, 0x0C);
// Get HeaderCRC32 Value
#region MyLBA
MyLBA = BitConverter.ToUInt64(bytes, 0x18);
if (MyLBA != 1)
{
throw new Exception("Invalid MyLBA property value");
}
#endregion MyLBA
AlternateLBA = BitConverter.ToUInt64(bytes, 0x20);
FirstUsableLBA = BitConverter.ToUInt64(bytes, 0x28);
LastUsableLBA = BitConverter.ToUInt64(bytes, 0x30);
DiskGuid = new Guid(Helper.GetSubArray(bytes, 0x38, 0x10));
PartitionEntryLBA = BitConverter.ToUInt64(bytes, 0x48);
NumberOfPartitionEntries = BitConverter.ToUInt32(bytes, 0x50);
SizeOfPartitionEntry = BitConverter.ToUInt32(bytes, 0x54);
// Get PartitionEntryArrayCRC32 Value
}
else
{
throw new Exception("Invalid GPT Signature");
}
PartitionTable = GuidPartitionTableEntry.GetInstances(bytes, NumberOfPartitionEntries, SizeOfPartitionEntry);
}
internal GuidPartitionTable(string devicePath)
{
MasterBootRecord mbr = MasterBootRecord.Get(devicePath);
if (mbr.PartitionTable[0].SystemId == "EFI_GPT_DISK")
{
using (FileStream streamToRead = Helper.getFileStream(devicePath))
{
// Get Header
GuidPartitionTableHeader GPTHeader = new GuidPartitionTableHeader(Helper.readDrive(streamToRead, GPT_OFFSET, SECTOR_SIZE));
Revision = GPTHeader.Revision;
HeaderSize = GPTHeader.HeaderSize;
MyLBA = GPTHeader.MyLBA;
AlternateLBA = GPTHeader.AlternateLBA;
FirstUsableLBA = GPTHeader.FirstUsableLBA;
LastUsableLBA = GPTHeader.LastUsableLBA;
DiskGuid = GPTHeader.DiskGUID;
PartitionEntryLBA = GPTHeader.PartitionEntryLBA;
NumberOfPartitionEntries = GPTHeader.NumberOfPartitionEntries;
SizeOfPartitionEntry = GPTHeader.SizeOfPartitionEntry;
// Get PartitionTable
List <GuidPartitionTableEntry> partitionList = new List <GuidPartitionTableEntry>();
bool Continue = true;
// Iterate through sectors that contain the GPT Entry Array
for (ulong j = GPTHeader.PartitionEntryLBA; (j < GPTHeader.PartitionEntryLBA + (GPTHeader.NumberOfPartitionEntries / (SECTOR_SIZE / GPTHeader.SizeOfPartitionEntry))); j++)
{
// Read one sector
byte[] partitionSectorBytes = Helper.readDrive(streamToRead, (SECTOR_SIZE * (long)j), SECTOR_SIZE);
// Iterate through Partition Entries in Sector
// Sectors (512 bytes) / Partitions (128 bytes) = 4 partitions per sector
for (int i = 0; i < 512; i += (int)GPTHeader.SizeOfPartitionEntry)
{
// Instantiate a GuidPartitionTableEntry object
GuidPartitionTableEntry entry = new GuidPartitionTableEntry(Helper.GetSubArray(partitionSectorBytes, i, (int)GPTHeader.SizeOfPartitionEntry));
// If entry's PartitionTypeGUID is 00000000-0000-0000-0000-000000000000 then it is not a partition
if (entry.PartitionTypeGuid == new Guid("00000000-0000-0000-0000-000000000000"))
{
Continue = false;
break;
}
partitionList.Add(entry);
}
if (!Continue)
{
break;
}
}
PartitionTable = partitionList.ToArray();
}
}
else
{
throw new Exception("No GPT found. Please use Get-MBR cmdlet");
}
}
internal GuidPartitionTable(byte[] bytes)
{
#region Header
GuidPartitionTableHeader GPTHeader = new GuidPartitionTableHeader(Helper.GetSubArray(bytes, 0x00, SECTOR_SIZE));
Revision = GPTHeader.Revision;
HeaderSize = GPTHeader.HeaderSize;
MyLBA = GPTHeader.MyLBA;
AlternateLBA = GPTHeader.AlternateLBA;
FirstUsableLBA = GPTHeader.FirstUsableLBA;
LastUsableLBA = GPTHeader.LastUsableLBA;
DiskGuid = GPTHeader.DiskGUID;
PartitionEntryLBA = GPTHeader.PartitionEntryLBA;
NumberOfPartitionEntries = GPTHeader.NumberOfPartitionEntries;
SizeOfPartitionEntry = GPTHeader.SizeOfPartitionEntry;
#endregion Header
// Get PartitionTable
List<GuidPartitionTableEntry> partitionList = new List<GuidPartitionTableEntry>();
for (int i = 0; i < (bytes.Length - SECTOR_SIZE); i += (int)GPTHeader.SizeOfPartitionEntry)
{
// Instantiate a GuidPartitionTableEntry object
GuidPartitionTableEntry entry = new GuidPartitionTableEntry(Helper.GetSubArray(bytes, (i + SECTOR_SIZE), (int)GPTHeader.SizeOfPartitionEntry));
// If entry's PartitionTypeGUID is 00000000-0000-0000-0000-000000000000 then it is not a partition
if (entry.PartitionTypeGuid == new Guid("00000000-0000-0000-0000-000000000000"))
{
break;
}
partitionList.Add(entry);
}
PartitionTable = partitionList.ToArray();
}
internal GuidPartitionTable(string devicePath)
{
MasterBootRecord mbr = MasterBootRecord.Get(devicePath);
if (mbr.PartitionTable[0].SystemId == "EFI_GPT_DISK")
{
using (FileStream streamToRead = Helper.getFileStream(devicePath))
{
// Get Header
GuidPartitionTableHeader GPTHeader = new GuidPartitionTableHeader(Helper.readDrive(streamToRead, GPT_OFFSET, SECTOR_SIZE));
Revision = GPTHeader.Revision;
HeaderSize = GPTHeader.HeaderSize;
MyLBA = GPTHeader.MyLBA;
AlternateLBA = GPTHeader.AlternateLBA;
FirstUsableLBA = GPTHeader.FirstUsableLBA;
LastUsableLBA = GPTHeader.LastUsableLBA;
DiskGuid = GPTHeader.DiskGUID;
PartitionEntryLBA = GPTHeader.PartitionEntryLBA;
NumberOfPartitionEntries = GPTHeader.NumberOfPartitionEntries;
SizeOfPartitionEntry = GPTHeader.SizeOfPartitionEntry;
// Get PartitionTable
List<GuidPartitionTableEntry> partitionList = new List<GuidPartitionTableEntry>();
bool Continue = true;
// Iterate through sectors that contain the GPT Entry Array
for(ulong j = GPTHeader.PartitionEntryLBA; (j < GPTHeader.PartitionEntryLBA + (GPTHeader.NumberOfPartitionEntries / (SECTOR_SIZE / GPTHeader.SizeOfPartitionEntry))); j++)
{
// Read one sector
byte[] partitionSectorBytes = Helper.readDrive(streamToRead, (SECTOR_SIZE * (long)j), SECTOR_SIZE);
// Iterate through Partition Entries in Sector
// Sectors (512 bytes) / Partitions (128 bytes) = 4 partitions per sector
for (int i = 0; i < 512; i += (int)GPTHeader.SizeOfPartitionEntry)
{
// Instantiate a GuidPartitionTableEntry object
GuidPartitionTableEntry entry = new GuidPartitionTableEntry(Helper.GetSubArray(partitionSectorBytes, i, (int)GPTHeader.SizeOfPartitionEntry));
// If entry's PartitionTypeGUID is 00000000-0000-0000-0000-000000000000 then it is not a partition
if (entry.PartitionTypeGuid == new Guid("00000000-0000-0000-0000-000000000000"))
{
Continue = false;
break;
}
partitionList.Add(entry);
}
if (!Continue)
{
break;
}
}
PartitionTable = partitionList.ToArray();
}
}
else
{
throw new Exception("No GPT found. Please use Get-MBR cmdlet");
}
}
