private static string GetDeviceInstanceId(SafeCmConnectMachineHandle safeMachineHandle, string hostName, NativeMethods.SP_DEVINFO_DATA diData)
{
uint ptrPrevious;
var lastError = NativeMethods.CM_Get_Parent_Ex(out ptrPrevious, diData.DevInst, 0, safeMachineHandle);
if (lastError != Win32Errors.CR_SUCCESS)
{
NativeError.ThrowException(lastError, hostName);
}
using (var safeBuffer = new SafeGlobalMemoryBufferHandle(NativeMethods.DefaultFileBufferSize / 8)) // 512
{
lastError = NativeMethods.CM_Get_Device_ID_Ex(diData.DevInst, safeBuffer, (uint)safeBuffer.Capacity, 0, safeMachineHandle);
if (lastError != Win32Errors.CR_SUCCESS)
{
NativeError.ThrowException(lastError, hostName);
}
// Device InstanceID, such as: "USB\VID_8087&PID_0A2B\5&2EDA7E1E&0&7", "SCSI\DISK&VEN_SANDISK&PROD_X400\4&288ED25&0&000200", ...
return(safeBuffer.PtrToStringUni());
}
}
public static extern int CM_Get_Device_ID_Ex([MarshalAs(UnmanagedType.U4)] uint dnDevInst, SafeGlobalMemoryBufferHandle buffer, [MarshalAs(UnmanagedType.U4)] uint bufferLen, [MarshalAs(UnmanagedType.U4)] uint ulFlags, SafeCmConnectMachineHandle hMachine);
public static extern int CM_Connect_Machine([MarshalAs(UnmanagedType.LPWStr)] string uncServerName, out SafeCmConnectMachineHandle phMachine);
internal static extern int CM_Get_Parent_Ex([MarshalAs(UnmanagedType.U4)] out uint pdnDevInst, [MarshalAs(UnmanagedType.U4)] uint dnDevInst, [MarshalAs(UnmanagedType.U4)] uint ulFlags, SafeCmConnectMachineHandle hMachine);
public static extern int CM_Get_Device_ID_Ex([MarshalAs(UnmanagedType.U4)] uint dnDevInst, SafeGlobalMemoryBufferHandle buffer, [MarshalAs(UnmanagedType.U4)] uint bufferLen, [MarshalAs(UnmanagedType.U4)] uint ulFlags, SafeCmConnectMachineHandle hMachine);
public static extern int CM_Connect_Machine([MarshalAs(UnmanagedType.LPWStr)] string uncServerName, out SafeCmConnectMachineHandle phMachine);
internal static extern int CM_Get_Parent_Ex([MarshalAs(UnmanagedType.U4)] out uint pdnDevInst, [MarshalAs(UnmanagedType.U4)] uint dnDevInst, [MarshalAs(UnmanagedType.U4)] uint ulFlags, SafeCmConnectMachineHandle hMachine);