internal static unsafe byte *ReadSectorDataPointerFromHandle(IntPtr handle, ulong startSector, ulong numSectors, ulong sectorSize)
{
uint bytesRead;
fixed(byte *data = new byte[sectorSize *numSectors])
{
LARGE_INTEGER li;
li.LowPart = 0;
li.QuadPart = (long)(startSector * sectorSize);
NativeDisk.SetFilePointer(handle, li.LowPart, out li.HighPart, EMoveMethod.Begin);
if (!NativeDisk.ReadFile(handle, new IntPtr(data), (uint)(sectorSize * numSectors), out bytesRead, IntPtr.Zero))
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to read sector data pointer from handle.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
if (bytesRead < (sectorSize * numSectors))
{
for (uint i = bytesRead; i < (sectorSize * numSectors); i++)
{
data[i] = 0;
}
}
return(data);
}
}
internal static Task <int> ReadSectorDataFromHandleAsync(IntPtr handle, byte[] data, ulong startSector, ulong numSectors, ulong sectorSize)
{
return(Task.Run(() =>
{
uint bytesRead;
LARGE_INTEGER li;
li.LowPart = 0;
li.QuadPart = (long)(startSector * sectorSize);
NativeDisk.SetFilePointer(handle, li.LowPart, out li.HighPart, EMoveMethod.Begin);
if (!NativeDisk.ReadFile(handle, data, (uint)(sectorSize * numSectors), out bytesRead, IntPtr.Zero))
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to read sector data from handle async.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
if (bytesRead < (sectorSize * numSectors))
{
for (uint i = bytesRead; i < (sectorSize * numSectors); i++)
{
data[i] = 0;
}
}
return (int)bytesRead;
}));
}
public void Dispose()
{
for (int i = 0; i < volumeHandles.Length; i++)
{
if (volumeHandles[i] != IntPtr.Zero)
{
try
{
NativeDiskWrapper.RemoveLockOnVolume(volumeHandles[i]);
}
catch { }
NativeDisk.CloseHandle(volumeHandles[i]);
volumeHandles[i] = IntPtr.Zero;
}
}
if (fileHandle != IntPtr.Zero)
{
NativeDisk.CloseHandle(fileHandle);
fileHandle = IntPtr.Zero;
}
for (int i = 0; i < deviceHandles.Length; i++)
{
if (deviceHandles[i] != IntPtr.Zero)
{
NativeDisk.CloseHandle(deviceHandles[i]);
deviceHandles[i] = IntPtr.Zero;
}
}
Utils.AllowComputerSleep();
}
internal static bool IsVolumeMounted(IntPtr handle)
{
int bytesReturned = 0;
bool result;
result = NativeDisk.DeviceIoControl(handle, NativeDisk.FSCTL_IS_VOLUME_MOUNTED, IntPtr.Zero, 0, IntPtr.Zero, 0, ref bytesReturned, IntPtr.Zero);
return(!result);
}
internal static string GetDriveLabel(string drive)
{
StringBuilder sb = new StringBuilder(261);
if (!NativeDisk.GetVolumeInformation(drive, sb, 261, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero, 0))
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to get drive label.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
return(sb.ToString());
}
internal static void DiskUpdateProperties(IntPtr handle)
{
int bytesReturned = 0;
var result = NativeDisk.DeviceIoControl(handle, NativeDisk.IOCTL_DISK_UPDATE_PROPERTIES, IntPtr.Zero, 0, IntPtr.Zero, 0, ref bytesReturned, IntPtr.Zero);
if (!result)
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to update disk properties.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
}
internal static IntPtr GetHandleOnFile(string filePath, uint access)
{
IntPtr _handle;
_handle = NativeDisk.CreateFileW(filePath, access, (access == NativeDisk.GENERIC_READ) ? NativeDisk.FILE_SHARE_READ : 0U, IntPtr.Zero, access == NativeDisk.GENERIC_READ ? NativeDisk.OPEN_EXISTING : NativeDisk.CREATE_ALWAYS, 0, IntPtr.Zero);
if (_handle == NativeDisk.INVALID_HANDLE_VALUE)
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to get handle on file.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
return(_handle);
}
public static ulong GetDeviceLength(IntPtr handle)
{
ulong length = 0;
unsafe
{
int returnLength = 0;
IntPtr lengthPtr = new IntPtr(&length);
NativeDisk.DeviceIoControl(handle, NativeDisk.IOCTL_DISK_GET_LENGTH_INFO, IntPtr.Zero, 0, lengthPtr, sizeof(ulong), ref returnLength, IntPtr.Zero);
}
return(length);
}
internal static bool CheckReadOnly(string drive)
{
StringBuilder sb = new StringBuilder(261);
FileSystemFeature flags;
if (!NativeDisk.GetVolumeInformation(drive, sb, 261, IntPtr.Zero, IntPtr.Zero, out flags, IntPtr.Zero, 0))
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to check if device is read only.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
return((flags & FileSystemFeature.ReadOnlyVolume) > 0);
}
internal static bool SpaceAvailible(string location, ulong spaceNeeded, out ulong freeSpace)
{
ulong foo = 0;
bool result;
result = NativeDisk.GetDiskFreeSpaceEx(location, out foo, out foo, out freeSpace);
if (!result)
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to get space availible.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
return(spaceNeeded <= freeSpace);
}
internal static IntPtr GetHandleOnVolume(int volume, uint access)
{
IntPtr _handle;
_handle = NativeDisk.CreateFile(string.Format(@"\\.\{0}:", (char)(volume + 'A')), access, NativeDisk.FILE_SHARE_READ | NativeDisk.FILE_SHARE_WRITE, IntPtr.Zero, NativeDisk.OPEN_EXISTING, 0, IntPtr.Zero);
if (_handle == NativeDisk.INVALID_HANDLE_VALUE)
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to get handle on volume.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
return(_handle);
}
internal static STORAGE_DEVICE_NUMBER GetDiskProperty(IntPtr handle, ref STORAGE_DEVICE_DESCRIPTOR devDescriptor)
{
STORAGE_PROPERTY_QUERY query = new STORAGE_PROPERTY_QUERY();
STORAGE_DEVICE_NUMBER devInfo = new STORAGE_DEVICE_NUMBER();
int outBytes = 0;
bool result;
IntPtr queryStructPtr;
IntPtr devDescriptorStructPtr;
IntPtr devInfoStructPtr;
query.PropertyId = STORAGE_PROPERTY_ID.StorageDeviceProperty;
query.QueryType = STORAGE_QUERY_TYPE.PropertyStandardQuery;
queryStructPtr = NativeDisk.StructToPtr(query);
devDescriptorStructPtr = NativeDisk.StructToPtr(devDescriptor);
devInfoStructPtr = NativeDisk.StructToPtr(devInfo);
result = NativeDisk.DeviceIoControl(handle, NativeDisk.IOCTL_STORAGE_QUERY_PROPERTY, queryStructPtr, Marshal.SizeOf(query), devDescriptorStructPtr, Marshal.SizeOf(devDescriptor), ref outBytes, IntPtr.Zero);
Marshal.FreeHGlobal(queryStructPtr);
Marshal.FreeHGlobal(devDescriptorStructPtr);
if (result)
{
result = NativeDisk.DeviceIoControl(handle, NativeDisk.IOCTL_STORAGE_GET_DEVICE_NUMBER, IntPtr.Zero, 0, devInfoStructPtr, Marshal.SizeOf(devInfo), ref outBytes, IntPtr.Zero);
if (!result)
{
Marshal.FreeHGlobal(devInfoStructPtr);
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to get disk property IOCTL_STORAGE_GET_DEVICE_NUMBER.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
}
else
{
if (NativeDisk.DeviceIoControl(handle, NativeDisk.IOCTL_STORAGE_CHECK_VERIFY2, IntPtr.Zero, 0, IntPtr.Zero, 0, ref outBytes, IntPtr.Zero))
{
Marshal.FreeHGlobal(devInfoStructPtr);
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to get disk property IOCTL_STORAGE_CHECK_VERIFY2.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
}
var resultStruct = Marshal.PtrToStructure <STORAGE_DEVICE_NUMBER>(devInfoStructPtr);
Marshal.FreeHGlobal(devInfoStructPtr);
return(resultStruct);
}
internal static bool UnmountVolume(IntPtr handle)
{
int bytesReturned = 0;
bool result;
result = NativeDisk.DeviceIoControl(handle, NativeDisk.FSCTL_DISMOUNT_VOLUME, IntPtr.Zero, 0, IntPtr.Zero, 0, ref bytesReturned, IntPtr.Zero);
if (!result)
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to unmount volume.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
return(result);
}
internal static void DiskSetDriveLayoutEx(IntPtr handle, DRIVE_LAYOUT_INFORMATION_EX layout)
{
var buffSize = Marshal.SizeOf(layout);
var buffer = Marshal.AllocHGlobal(buffSize);
int bytesReturned = 0;
Marshal.StructureToPtr(layout, buffer, false);
var result = NativeDisk.DeviceIoControl(handle, NativeDisk.IOCTL_DISK_SET_DRIVE_LAYOUT_EX, buffer, buffSize, IntPtr.Zero, 0, ref bytesReturned, IntPtr.Zero);
Marshal.FreeHGlobal(buffer);
if (!result)
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to set drive layout.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
}
internal static ulong GetFilesizeInSectors(IntPtr handle, ulong sectorSize, int offset = 0)
{
ulong retVal = 0;
long fileSize = 0;
if (!NativeDisk.GetFileSizeEx(handle, out fileSize))
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to get file size in sectors.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
fileSize -= offset;
retVal = (ulong)((fileSize / (long)sectorSize) + ((fileSize % (long)sectorSize) > 0 ? 1 : 0));
return(retVal);
}
internal static void WriteSectorDataToHandle(IntPtr handle, byte[] data, ulong startSector, ulong numSectors, ulong sectorSize, int length)
{
uint bytesWritten;
bool result;
LARGE_INTEGER li;
li.LowPart = 0;
li.QuadPart = (long)(startSector * sectorSize);
NativeDisk.SetFilePointer(handle, li.LowPart, out li.HighPart, EMoveMethod.Begin);
result = NativeDisk.WriteFile(handle, data, (uint)(length), out bytesWritten, IntPtr.Zero);
if (!result)
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to write sector data to handle.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
}
public static ulong GetDeviceLength(int deviceID)
{
ulong length = 0;
IntPtr deviceHandle = NativeDiskWrapper.GetHandleOnDevice(deviceID, NativeDisk.GENERIC_READ);
unsafe
{
int returnLength = 0;
IntPtr lengthPtr = new IntPtr(&length);
NativeDisk.DeviceIoControl(deviceHandle, NativeDisk.IOCTL_DISK_GET_LENGTH_INFO, IntPtr.Zero, 0, lengthPtr, sizeof(ulong), ref returnLength, IntPtr.Zero);
}
NativeDisk.CloseHandle(deviceHandle);
return(length);
}
internal static DRIVE_LAYOUT_INFORMATION_EX DiskGetDriveLayoutEx(IntPtr handle)
{
var buffSize = Marshal.SizeOf(typeof(DRIVE_LAYOUT_INFORMATION_EX));
var buffer = Marshal.AllocHGlobal(buffSize);
int outBytes = 0;
var result = NativeDisk.DeviceIoControl(handle, NativeDisk.IOCTL_DISK_GET_DRIVE_LAYOUT_EX, IntPtr.Zero, 0, buffer, buffSize, ref outBytes, IntPtr.Zero);
if (!result)
{
Marshal.FreeHGlobal(buffer);
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to get drive layout.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
else
{
var resultStruct = Marshal.PtrToStructure <DRIVE_LAYOUT_INFORMATION_EX>(buffer);
Marshal.FreeHGlobal(buffer);
return(resultStruct);
}
}
internal static PARTITION_INFORMATION_EX GetDiskPartitionInfo(IntPtr handle)
{
bool result;
int outBytes = 0;
PARTITION_INFORMATION_EX partitionInfo = new PARTITION_INFORMATION_EX();
IntPtr partitionInfoStrPtr;
partitionInfoStrPtr = NativeDisk.StructToPtr(partitionInfo);
result = NativeDisk.DeviceIoControl(handle, NativeDisk.IOCTL_DISK_GET_PARTITION_INFO_EX, IntPtr.Zero, 0, partitionInfoStrPtr, Marshal.SizeOf(partitionInfo), ref outBytes, IntPtr.Zero);
if (!result)
{
Marshal.FreeHGlobal(partitionInfoStrPtr);
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to get disk partition info.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
var resultStruct = partitionInfo = Marshal.PtrToStructure <PARTITION_INFORMATION_EX>(partitionInfoStrPtr);
Marshal.FreeHGlobal(partitionInfoStrPtr);
return(resultStruct);
}
internal static ulong GetNumberOfSectors(IntPtr handle, ref ulong sectorSize)
{
int foo = 0;
DISK_GEOMETRY_EX diskGeometry = new DISK_GEOMETRY_EX();
bool result;
IntPtr diskGeometryPtr = NativeDisk.StructToPtr(diskGeometry);
result = NativeDisk.DeviceIoControl(handle, NativeDisk.IOCTL_DISK_GET_DRIVE_GEOMETRY_EX, IntPtr.Zero, 0, diskGeometryPtr, Marshal.SizeOf(diskGeometry), ref foo, IntPtr.Zero);
if (!result)
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to get number of sectors.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
diskGeometry = Marshal.PtrToStructure <DISK_GEOMETRY_EX>(diskGeometryPtr);
Marshal.FreeHGlobal(diskGeometryPtr);
sectorSize = (ulong)diskGeometry.Geometry.BytesPerSector;
return((ulong)(diskGeometry.DiskSize / diskGeometry.Geometry.BytesPerSector));
}
internal static void DiskCreateDiskMBR(IntPtr handle, uint Signature)
{
CREATE_DISK disk = new CREATE_DISK();
disk.PartitionStyle = PARTITION_STYLE.MasterBootRecord; // MBR
disk.Mbr.Signature = Signature;
var buffSize = Marshal.SizeOf(disk);
var buffer = Marshal.AllocHGlobal(buffSize);
Marshal.StructureToPtr(disk, buffer, false);
int bytesReturned = 0;
var result = NativeDisk.DeviceIoControl(handle, NativeDisk.IOCTL_DISK_CREATE_DISK, buffer, buffSize, IntPtr.Zero, 0, ref bytesReturned, IntPtr.Zero);
Marshal.FreeHGlobal(buffer);
if (!result)
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to create disk MBR.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
}
public static DiskPartitionInfo GetDiskPartitionInfo(char driveLetter)
{
int deviceID = NativeDiskWrapper.CheckDriveType(string.Format(@"\\.\{0}:\", driveLetter));
IntPtr deviceHandle = NativeDiskWrapper.GetHandleOnDevice(deviceID, NativeDisk.GENERIC_READ);
uint partitionTableSize = 0;
DiskPartitionInfo partitionsInfo = new DiskPartitionInfo();
var partitionInfo = NativeDiskWrapper.GetDiskPartitionInfo(deviceHandle);
partitionsInfo.DiskTotalSize = GetDeviceLength(deviceID);
if (partitionInfo.PartitionStyle == PARTITION_STYLE.MasterBootRecord)
{
partitionsInfo.PartitionType = PartitionType.MBR;
partitionTableSize = 512;
unsafe
{
byte *data = NativeDiskWrapper.ReadSectorDataPointerFromHandle(deviceHandle, 0, 1, 512);
for (int i = 0; i < 4; i++)
{
ulong partitionStartSector = (uint)Marshal.ReadInt32(new IntPtr(data), 0x1BE + 8 + 16 * i);
ulong partitionNumSectors = (uint)Marshal.ReadInt32(new IntPtr(data), 0x1BE + 12 + 16 * i);
if (partitionStartSector + partitionNumSectors > 0)
{
partitionsInfo.PartitionSizes.Add(partitionNumSectors * 512);
}
}
}
}
else if (partitionInfo.PartitionStyle == PARTITION_STYLE.GuidPartitionTable)
{
partitionsInfo.PartitionType = PartitionType.GPT;
partitionTableSize = 17408;
unsafe
{
byte *data = NativeDiskWrapper.ReadSectorDataPointerFromHandle(deviceHandle, 0, 1, 512);
uint gptHeaderOffset = (uint)Marshal.ReadInt32(new IntPtr(data), 0x1C6);
data = NativeDiskWrapper.ReadSectorDataPointerFromHandle(deviceHandle, gptHeaderOffset, 1, 512);
ulong partitionTableSector = (ulong)Marshal.ReadInt64(new IntPtr(data), 0x48);
uint noOfPartitionEntries = (uint)Marshal.ReadInt32(new IntPtr(data), 0x50);
uint sizeOfPartitionEntry = (uint)Marshal.ReadInt32(new IntPtr(data), 0x54);
data = NativeDiskWrapper.ReadSectorDataPointerFromHandle(deviceHandle, partitionTableSector, (512 / sizeOfPartitionEntry) * noOfPartitionEntries, 512);
for (int i = 0; i < noOfPartitionEntries; i++)
{
ulong partitionStartSector = (ulong)Marshal.ReadInt64(new IntPtr(data), (int)(0x20 + sizeOfPartitionEntry * i));
ulong partitionNumSectors = (ulong)Marshal.ReadInt64(new IntPtr(data), (int)(0x28 + sizeOfPartitionEntry * i));
if (partitionStartSector + partitionNumSectors > 0)
{
partitionsInfo.PartitionSizes.Add(partitionNumSectors * 512);
}
}
}
}
else
{
partitionsInfo.PartitionType = PartitionType.RAW;
}
NativeDisk.CloseHandle(deviceHandle);
partitionsInfo.UnallocatedSize = partitionsInfo.DiskTotalSize - (partitionsInfo.PartitionSizes.Sum() + partitionTableSize);
return(partitionsInfo);
}
internal static int CheckDriveType(string name)
{
int retVal = 0;
int bytesReaded = 0;
IntPtr handle;
string nameNoSlash = name.Substring(0, name.Length - 1);
var driveType = NativeDisk.GetDriveType(name);
switch (driveType)
{
case DriveType.Fixed:
case DriveType.Removable:
handle = NativeDisk.CreateFile(nameNoSlash, NativeDisk.FILE_READ_ATTRIBUTES, NativeDisk.FILE_SHARE_READ | NativeDisk.FILE_SHARE_WRITE, IntPtr.Zero, NativeDisk.OPEN_EXISTING, 0, IntPtr.Zero);
if (handle == NativeDisk.INVALID_HANDLE_VALUE)
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to check drive type 1.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
else
{
STORAGE_DEVICE_DESCRIPTOR devDescriptor = new STORAGE_DEVICE_DESCRIPTOR();
STORAGE_DEVICE_NUMBER devNumber = GetDiskProperty(handle, ref devDescriptor);
if ((driveType == DriveType.Removable && devDescriptor.BusType != STORAGE_BUS_TYPE.BusTypeSata) ||
(driveType == DriveType.Fixed && devDescriptor.BusType == STORAGE_BUS_TYPE.BusTypeUsb) ||
(devDescriptor.BusType == STORAGE_BUS_TYPE.BusTypeSd) || (devDescriptor.BusType == STORAGE_BUS_TYPE.BusTypeMmc))
{
if (NativeDisk.DeviceIoControl(handle, NativeDisk.IOCTL_STORAGE_CHECK_VERIFY2, IntPtr.Zero, 0, IntPtr.Zero, 0, ref bytesReaded, IntPtr.Zero))
{
retVal = devNumber.DeviceNumber;
}
else
{
NativeDisk.CloseHandle(handle);
Utils.SetErrorMode(Utils.ErrorModes.SEM_FAILCRITICALERRORS);
try
{
handle = NativeDisk.CreateFile(name, NativeDisk.FILE_READ_DATA, NativeDisk.FILE_SHARE_READ | NativeDisk.FILE_SHARE_WRITE, IntPtr.Zero, NativeDisk.OPEN_EXISTING, 0, IntPtr.Zero);
}
finally
{
Utils.SetErrorMode(Utils.ErrorModes.SYSTEM_DEFAULT);
}
if (handle == NativeDisk.INVALID_HANDLE_VALUE)
{
var exception = new Win32Exception(Marshal.GetLastWin32Error());
throw new Exception(string.Format("Error occured when trying to check drive type 2.\nError code: {0}\nMessage: {1}", exception.NativeErrorCode, exception.Message));
}
if (NativeDisk.DeviceIoControl(handle, NativeDisk.IOCTL_STORAGE_CHECK_VERIFY, IntPtr.Zero, 0, IntPtr.Zero, 0, ref bytesReaded, IntPtr.Zero))
{
retVal = devNumber.DeviceNumber;
}
}
}
NativeDisk.CloseHandle(handle);
}
break;
default:
throw new Win32Exception("Invalid device type");
}
return(retVal);
}
internal static bool ByteArrayCompare(byte[] b1, byte[] b2)
{
// Validate buffers are the same length.
// This also ensures that the count does not exceed the length of either buffer.
return(NativeDisk.memcmp(b1, b2, b1.Length > b2.Length ? b2.Length : b1.Length) == 0);
}
internal static uint GetLogicalDrives()
{
return(NativeDisk.GetLogicalDrives());
}