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);
}