internal Guid GetProperty(Native.SP_DEVINFO_DATA devData, int property, Guid defaultValue)
{
if (devData == null)
{
throw new ArgumentNullException("devData");
}
int propertyRegDataType = 0;
int requiredSize;
int propertyBufferSize = Marshal.SizeOf(typeof(Guid));
IntPtr propertyBuffer = Marshal.AllocHGlobal(propertyBufferSize);
if (!Native.SetupDiGetDeviceRegistryProperty(_deviceInfoSet,
devData,
property,
out propertyRegDataType,
propertyBuffer,
propertyBufferSize,
out requiredSize))
{
Marshal.FreeHGlobal(propertyBuffer);
int error = Marshal.GetLastWin32Error();
if (error != Native.ERROR_INVALID_DATA)
{
throw new Win32Exception(error);
}
return(defaultValue);
}
Guid value = (Guid)Marshal.PtrToStructure(propertyBuffer, typeof(Guid));
Marshal.FreeHGlobal(propertyBuffer);
return(value);
}
internal Device(DeviceClass deviceClass, Native.SP_DEVINFO_DATA deviceInfoData, string path, int index)
{
if (deviceClass == null)
throw new ArgumentNullException("deviceClass");
if (deviceInfoData == null)
throw new ArgumentNullException("deviceInfoData");
_deviceClass = deviceClass;
_path = path; // may be null
_deviceInfoData = deviceInfoData;
_index = index;
}
internal Device(DeviceClass deviceClass, Native.SP_DEVINFO_DATA deviceInfoData, string path, int index)
{
if (deviceClass == null)
{
throw new ArgumentNullException("deviceClass");
}
if (deviceInfoData == null)
{
throw new ArgumentNullException("deviceInfoData");
}
_deviceClass = deviceClass;
_path = path; // may be null
_deviceInfoData = deviceInfoData;
_index = index;
}
internal Native.SP_DEVINFO_DATA GetInfo(int dnDevInst)
{
StringBuilder sb = new StringBuilder(1024);
int hr = Native.CM_Get_Device_ID(dnDevInst, sb, sb.Capacity, 0);
if (hr != 0)
{
throw new Win32Exception(hr);
}
Native.SP_DEVINFO_DATA devData = new Native.SP_DEVINFO_DATA();
devData.cbSize = (uint)Marshal.SizeOf(devData);
if (!Native.SetupDiOpenDeviceInfo(_deviceInfoSet, sb.ToString(), IntPtr.Zero, 0, devData))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
return(devData);
}
internal Volume(DeviceClass deviceClass, Native.SP_DEVINFO_DATA deviceInfoData, string path, int index)
: base(deviceClass, deviceInfoData, path, index)
{
}
internal override Device CreateDevice(DeviceClass deviceClass, Native.SP_DEVINFO_DATA deviceInfoData, string path, int index, int disknum = -1)
{
return(new Volume(deviceClass, deviceInfoData, path, index));
}
/// <summary>
/// Gets the list of devices of this device class.
/// </summary>
/// <value>
/// The devices.
/// </value>
/// <exception cref="System.ComponentModel.Win32Exception">
/// </exception>
public List <Device> GetDevices()
{
try
{
if (_devices == null || _devices.Count == 0)
{
_devices = new List <Device>();
int index = 0;
while (true)
{
Native.SP_DEVICE_INTERFACE_DATA interfaceData = new Native.SP_DEVICE_INTERFACE_DATA();
interfaceData.cbSize = (uint)Marshal.SizeOf(interfaceData);
if (!Native.SetupDiEnumDeviceInterfaces(_deviceInfoSet, null, ref _classGuid, index, interfaceData))
{
int error = Marshal.GetLastWin32Error();
if (error != Native.ERROR_NO_MORE_ITEMS)
{
throw new Win32Exception(error);
}
break;
}
Native.SP_DEVINFO_DATA devData = new Native.SP_DEVINFO_DATA();
devData.cbSize = (uint)Marshal.SizeOf(devData);
int size = 0;
if (!Native.SetupDiGetDeviceInterfaceDetail(_deviceInfoSet, interfaceData, IntPtr.Zero, 0, ref size, devData))
{
int error = Marshal.GetLastWin32Error();
if (error != Native.ERROR_INSUFFICIENT_BUFFER)
{
throw new Win32Exception(error);
}
}
IntPtr buffer = Marshal.AllocHGlobal(size);
Native.SP_DEVICE_INTERFACE_DETAIL_DATA detailData = new Native.SP_DEVICE_INTERFACE_DETAIL_DATA();
detailData.cbSize = Marshal.SizeOf(detailData);
Marshal.WriteInt32(buffer, IntPtr.Size);
Marshal.StructureToPtr(detailData, buffer, false);
if (!Native.SetupDiGetDeviceInterfaceDetail(_deviceInfoSet, interfaceData, buffer, size, ref size, devData))
{
int error = Marshal.GetLastWin32Error();
Win32Exception exc = new Win32Exception(error);
Marshal.FreeHGlobal(buffer);
throw exc;
}
var strPtr = new IntPtr(buffer.ToInt64() + 4);
string devicePath = Marshal.PtrToStringAuto(strPtr);
//IntPtr pDevicePath = (IntPtr)((int)buffer + Marshal.SizeOf(typeof(int)));
//string devicePath = Marshal.PtrToStringAuto(pDevicePath);
Marshal.FreeHGlobal(buffer);
if (_classGuid.Equals(new Guid(Native.GUID_DEVINTERFACE_DISK)))
{
// Find disks
IntPtr hFile = Native.CreateFile(devicePath, 0, Native.FILE_SHARE_READ | Native.FILE_SHARE_WRITE, IntPtr.Zero, Native.OPEN_EXISTING, 0, IntPtr.Zero);
if (hFile.ToInt32() == Native.INVALID_HANDLE_VALUE)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
int bytesReturned = 0;
int numBufSize = 0x400; // some big size
IntPtr numBuffer = Marshal.AllocHGlobal(numBufSize);
Native.STORAGE_DEVICE_NUMBER disknum;
try
{
if (!Native.DeviceIoControl(hFile, Native.IOCTL_STORAGE_GET_DEVICE_NUMBER, IntPtr.Zero, 0, numBuffer, numBufSize, out bytesReturned, IntPtr.Zero))
{
Console.WriteLine("IOCTL failed.");
}
}
catch (Exception ex)
{
Console.WriteLine("Exception calling ioctl: " + ex);
}
finally
{
Native.CloseHandle(hFile);
}
if (bytesReturned > 0)
{
disknum = (Native.STORAGE_DEVICE_NUMBER)Marshal.PtrToStructure(numBuffer, typeof(Native.STORAGE_DEVICE_NUMBER));
}
else
{
disknum = new Native.STORAGE_DEVICE_NUMBER()
{
DeviceNumber = -1, DeviceType = -1, PartitionNumber = -1
}
};
Device device = CreateDevice(this, devData, devicePath, index, disknum.DeviceNumber);
_devices.Add(device);
Marshal.FreeHGlobal(hFile);
}
else
{
Device device = CreateDevice(this, devData, devicePath, index);
_devices.Add(device);
}
index++;
}
_devices.Sort();
}
return(_devices);
}
catch (Exception err)
{
Debug.WriteLine("DeviceClass.GetDevices() - ERROR: " + err.ToString());
return(new List <Device>());
}
}
internal virtual Device CreateDevice(DeviceClass deviceClass, Native.SP_DEVINFO_DATA deviceInfoData, string path, int index, int disknum = -1)
{
return(new Device(deviceClass, deviceInfoData, path, index, disknum));
}
internal Native.SP_DEVINFO_DATA GetInfo(int dnDevInst)
{
StringBuilder sb = new StringBuilder(1024);
int hr = Native.CM_Get_Device_ID(dnDevInst, sb, sb.Capacity, 0);
if (hr != 0)
throw new Win32Exception(hr);
Native.SP_DEVINFO_DATA devData = new Native.SP_DEVINFO_DATA();
devData.cbSize = Marshal.SizeOf(typeof(Native.SP_DEVINFO_DATA));
if (!Native.SetupDiOpenDeviceInfo(_deviceInfoSet, sb.ToString(), IntPtr.Zero, 0, devData))
throw new Win32Exception(Marshal.GetLastWin32Error());
return devData;
}
