Updated for "Windows 10 Anniversary Update" (Version 1607)

3 files changed, 1114 insertions, 0 deletions

diff --git a/TrEE/Test/SampleTest.cpp b/TrEE/Test/SampleTest.cpp
new file mode 100644
index 00000000..89bd9471
--- /dev/null
+++ b/TrEE/Test/SampleTest.cpp
@@ -0,0 +1,836 @@
+/*++
+
+Copyright (c) Microsoft Corporation
+
+Module Name:
+
+    sampletest.cpp
+
+Abstract:
+
+    This file demonstrates I/O to TrEE secure services.
+
+Environment:
+
+    User mode
+
+--*/
+
+#pragma warning(disable:4127)
+
+#include <initguid.h>
+#include <ntstatus.h>
+#define WIN32_NO_STATUS
+#include <Windows.h>
+#include <winioctl.h>
+#include <cfgmgr32.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+typedef LONG NTSTATUS;
+
+#include <TrustedRT.h>
+#include <SampleSecureService.h>
+#include <SampleOSService.h>
+
+#define TEST_ASSERT(_Assertion, _Message, ...) do { \
+        if (!(_Assertion)) { \
+            wprintf(_Message L"\n", __VA_ARGS__); \
+            Success = FALSE; \
+            goto End; \
+        }\
+    } while (0)
+
+#define TEST_COMMENT(_Message, ...) wprintf(_Message L"\n", __VA_ARGS__)
+
+#define TEST_STRING L"This is a test string.\n"
+
+HANDLE
+OpenServiceHandleByInterface(
+    _In_ LPCGUID ServiceGuid
+    )
+
+/*++
+
+Routine Description:
+
+    This routine opens a handle to the service device specified the GUID using
+    PnP device interface. The device interface gives a symbolic link to the
+    service device that can be fed to CreateFile function.
+
+Arguments:
+
+    ServiceGuid - Supplies the GUID of the service to open.
+
+Return Value:
+
+    HANDLE to the secure service, NULL if error occurred.
+
+--*/
+
+{
+    CONFIGRET ConfigRet;
+    WCHAR InterfaceSymlink[1024];
+    HANDLE ServiceHandle;
+    BOOL Success;
+
+    ServiceHandle = INVALID_HANDLE_VALUE;
+    ConfigRet = CM_Get_Device_Interface_ListW(
+        const_cast<LPGUID>(ServiceGuid),
+        NULL,
+        InterfaceSymlink,
+        _countof(InterfaceSymlink),
+        CM_GET_DEVICE_INTERFACE_LIST_PRESENT
+        );
+
+    TEST_ASSERT(ConfigRet == CR_SUCCESS, L"GetDeviceInterface failed, configret=%d", ConfigRet);
+    TEST_COMMENT(L"Symlink=%ws", InterfaceSymlink);
+
+    ServiceHandle = CreateFileW(
+        InterfaceSymlink,
+        FILE_READ_DATA | FILE_WRITE_DATA,
+        0,
+        NULL,
+        OPEN_EXISTING,
+        FILE_FLAG_OVERLAPPED,
+        NULL);
+
+    TEST_ASSERT(ServiceHandle != INVALID_HANDLE_VALUE, L"Service open failed");
+
+End:
+    return ServiceHandle;
+}
+
+HANDLE
+OpenServiceHandleByFilename(
+    _In_ LPCGUID ServiceGuid
+    )
+
+/*++
+
+Routine Description:
+
+    This routine opens a handle to the service device specified the GUID using
+    TrEE-namespace filename. The filename has format \\.\WindowsTrustedRT\{GUID}.
+    The filename is parsed in IRP_MJ_CREATE handler in TrEE class extension.
+    Then request is forwarded to corresponding service device.
+
+Arguments:
+
+    ServiceGuid - Supplies the GUID of the service to open.
+
+Return Value:
+
+    HANDLE to the secure service, NULL if error occurred.
+
+--*/
+
+{
+    WCHAR InterfaceGuid[1024];
+    WCHAR InterfaceSymlink[1024];
+    HANDLE ServiceHandle;
+    BOOL Success;
+
+    ServiceHandle = INVALID_HANDLE_VALUE;
+    swprintf_s(InterfaceGuid,
+               L"{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
+               ServiceGuid->Data1,
+               ServiceGuid->Data2,
+               ServiceGuid->Data3,
+               ServiceGuid->Data4[0],
+               ServiceGuid->Data4[1],
+               ServiceGuid->Data4[2],
+               ServiceGuid->Data4[3],
+               ServiceGuid->Data4[4],
+               ServiceGuid->Data4[5],
+               ServiceGuid->Data4[6],
+               ServiceGuid->Data4[7]
+               );
+
+    swprintf_s(InterfaceSymlink, L"\\\\.\\WindowsTrustedRT\\%ws", InterfaceGuid);
+
+    TEST_COMMENT(L"Guid=%ws", InterfaceGuid);
+    TEST_COMMENT(L"Symlink=%ws", InterfaceSymlink);
+
+    ServiceHandle = CreateFileW(
+        InterfaceSymlink,
+        FILE_READ_DATA | FILE_WRITE_DATA,
+        0,
+        NULL,
+        OPEN_EXISTING,
+        FILE_FLAG_OVERLAPPED,
+        NULL);
+
+    TEST_ASSERT(ServiceHandle != INVALID_HANDLE_VALUE, L"Service open failed");
+
+End:
+    return ServiceHandle;
+}
+
+BOOL
+CallTrEEService(
+    _In_ HANDLE ServiceHandle,
+    _In_ ULONG FunctionCode,
+    _In_reads_bytes_(InputBufferLength) PVOID InputBuffer,
+    _In_ ULONG InputBufferLength,
+    _Out_writes_bytes_to_(OutputBufferLength, *BytesWritten) PVOID OutputBuffer,
+    _In_ ULONG OutputBufferLength,
+    _Out_ PULONG BytesWritten
+    )
+
+/*++
+
+Routine Description:
+
+    This routine is a wrapper for DeviceIoControl to conveniently send TrEE
+    secure function requests. Input and output buffers are packed to TrEE
+    request structs and number of bytes written is unpacked from response
+    struct.
+
+Arguments:
+
+    ServiceHandle - Supplies a handle to the secure service on which the
+                    request is to be sent.
+
+    FunctionCode - Supplies the function code of the request.
+
+    InputBuffer - Supplies a pointer to the input buffer that contains the data
+                  required to perform the operation
+
+    InputBufferLength - Supplies the size of the input buffer, in bytes.
+
+    OutputBuffer - Supplies a pointer to the output buffer that is to receive
+                   the data returned by the operation.
+
+    OutputBufferLength - Supplies the size of the output buffer, in bytes.
+
+    BytesWritten - Supplies a pointer to a variable that receives the size of
+                   the data stored in the output buffer, in bytes.
+
+Return Value:
+
+    TRUE if successful.
+
+--*/
+
+{
+    TR_SERVICE_REQUEST Request;
+    TR_SERVICE_REQUEST_RESPONSE Response;
+    BOOL Success;
+    ULONG ResponseBytesWritten;
+
+    Request.FunctionCode = FunctionCode;
+    Request.InputBuffer = InputBuffer;
+    Request.InputBufferSize = InputBufferLength;
+    Request.OutputBuffer = OutputBuffer;
+    Request.OutputBufferSize = OutputBufferLength;
+
+    Success = DeviceIoControl(ServiceHandle,
+                              IOCTL_TR_EXECUTE_FUNCTION,
+                              &Request,
+                              sizeof(Request),
+                              &Response,
+                              sizeof(Response),
+                              &ResponseBytesWritten,
+                              NULL);
+
+    if (ResponseBytesWritten >= sizeof(Response)) {
+        *BytesWritten = (ULONG)Response.BytesWritten;
+        return Success;
+
+    } else {
+
+        *BytesWritten = 0;
+        return FALSE;
+    }
+}
+
+typedef struct _ASYNC_TREE_CALL {
+    OVERLAPPED Overlapped;
+    TR_SERVICE_REQUEST Request;
+    TR_SERVICE_REQUEST_RESPONSE Response;
+} ASYNC_TREE_CALL, *PASYNC_TREE_CALL;
+
+BOOL
+CallTrEEServiceEx(
+    _In_ HANDLE ServiceHandle,
+    _In_ ULONG FunctionCode,
+    _In_reads_bytes_(InputBufferLength) PVOID InputBuffer,
+    _In_ ULONG InputBufferLength,
+    _Out_writes_bytes_to_(OutputBufferLength, *BytesWritten) PVOID OutputBuffer,
+    _In_ ULONG OutputBufferLength,
+    _Out_ PULONG BytesWritten,
+    _Deref_out_ PASYNC_TREE_CALL* pAsyncContext
+    )
+
+/*++
+
+Routine Description:
+
+    This routine is a wrapper for DeviceIoControl similar to CallTrEEService,
+    except that it performs asynchronous I/O.
+
+Arguments:
+
+    ServiceHandle - Supplies a handle to the secure service on which the
+                    request is to be sent. The handle must have been opened
+                    with FILE_FLAG_OVERLAPPED flag.
+
+    FunctionCode - Supplies the function code of the request.
+
+    InputBuffer - Supplies a pointer to the input buffer that contains the data
+                  required to perform the operation
+
+    InputBufferLength - Supplies the size of the input buffer, in bytes.
+
+    OutputBuffer - Supplies a pointer to the output buffer that is to receive
+                   the data returned by the operation.
+
+    OutputBufferLength - Supplies the size of the output buffer, in bytes.
+
+    BytesWritten - Supplies a pointer to a variable that receives the size of
+                   the data stored in the output buffer, in bytes.
+
+    pAsyncContext - Supplies a pointer to a variable that receives the pointer
+                    to ASYNC_TREE_CALL which contains necessary input and
+                    output buffer for the request and an OVERLAPPED struct to
+                    track the progress of the request.
+
+Return Value:
+
+    TRUE if the operation was completed synchronously and successfully.
+
+    FALSE if the operation is undergoing asynchronously or has failed. Check
+    the value of GetLastError to distinguish the case.
+
+--*/
+
+{
+    PASYNC_TREE_CALL AsyncContext;
+    BOOL Success;
+    ULONG ResponseBytesWritten;
+
+    AsyncContext = new ASYNC_TREE_CALL;
+    memset(AsyncContext, 0, sizeof(ASYNC_TREE_CALL));
+    AsyncContext->Request.FunctionCode = FunctionCode;
+    AsyncContext->Request.InputBuffer = InputBuffer;
+    AsyncContext->Request.InputBufferSize = InputBufferLength;
+    AsyncContext->Request.OutputBuffer = OutputBuffer;
+    AsyncContext->Request.OutputBufferSize = OutputBufferLength;
+    AsyncContext->Overlapped.hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+    *pAsyncContext = AsyncContext;
+
+    Success = DeviceIoControl(ServiceHandle,
+                              IOCTL_TR_EXECUTE_FUNCTION,
+                              &AsyncContext->Request,
+                              sizeof(TR_SERVICE_REQUEST),
+                              &AsyncContext->Response,
+                              sizeof(TR_SERVICE_REQUEST_RESPONSE),
+                              &ResponseBytesWritten,
+                              &AsyncContext->Overlapped);
+
+    if (ResponseBytesWritten >= sizeof(TR_SERVICE_REQUEST_RESPONSE)) {
+        *BytesWritten = (ULONG)AsyncContext->Response.BytesWritten;
+        return Success;
+
+    } else {
+
+        *BytesWritten = 0;
+        return FALSE;
+    }
+}
+
+VOID
+CleanupAsyncTrEECallContext(
+    _In_ PASYNC_TREE_CALL AsyncContext
+    )
+
+/*++
+
+Routine Description:
+
+    This routine cleans up the memory and resources used by ASYNC_TREE_CALL
+    struct returned from CallTrEEServiceEx function.
+
+Arguments:
+
+    AsyncContext - Supplies a pointer to ASYNC_TREE_CALL struct returned from
+                   CallTrEEServiceEx function.
+
+Return Value:
+
+    None.
+
+--*/
+
+{
+    CloseHandle(AsyncContext->Overlapped.hEvent);
+    delete AsyncContext;
+}
+
+int
+__cdecl
+wmain(
+    int argc,
+    const wchar_t** argv
+    )
+{
+    DWORD BytesWritten;
+    HANDLE TestServiceHandle;
+    HANDLE Test2ServiceHandle;
+    HANDLE MasterDeviceHandle;
+    BOOL Success;
+    ULONG64 TestFlag;
+
+    Success = TRUE;
+    TestServiceHandle = INVALID_HANDLE_VALUE;
+    Test2ServiceHandle = INVALID_HANDLE_VALUE;
+    MasterDeviceHandle = INVALID_HANDLE_VALUE;
+
+    if (argc > 1) {
+        swscanf_s(argv[1], L"%I64x", &TestFlag);
+
+    } else {
+
+        TestFlag = ~0UI64;
+    }
+
+    //
+    // Open the service using TrEE-namespace filename.
+    //
+    TestServiceHandle = OpenServiceHandleByFilename(&GUID_SAMPLE_TEST_SERVICE);
+    TEST_ASSERT(TestServiceHandle != INVALID_HANDLE_VALUE, L"Test service open failed");
+
+    if ((TestFlag & 0x1) != 0) {
+        TEST_COMMENT(L"\n::::: TEST_SERVICE_HELLO_WORLD");
+
+        wchar_t* HelloWorld;
+
+        //
+        // First call the service with no output buffer to detect how large
+        // output buffer should be.
+        //
+        Success = CallTrEEService(TestServiceHandle,
+                                  TEST_SERVICE_HELLO_WORLD,
+                                  NULL, 0,
+                                  NULL, 0,
+                                  &BytesWritten);
+
+        TEST_ASSERT(!Success, L"CallTrEEService (get size) unexpectedly succeeded");
+        TEST_ASSERT(BytesWritten > 0, L"CallTrEEService (get size) returned 0 bytes required size");
+
+        //
+        // The request fails, but BytesWritten variable will contain the
+        // required size of output buffer.
+        //
+        HelloWorld = (wchar_t*)malloc(BytesWritten);
+        Success = CallTrEEService(TestServiceHandle,
+                                  TEST_SERVICE_HELLO_WORLD,
+                                  NULL, 0,
+                                  HelloWorld, BytesWritten,
+                                  &BytesWritten);
+
+        TEST_ASSERT(Success, L"CallTrEEService (read data) failed (err=%d)", GetLastError());
+        TEST_ASSERT(BytesWritten > 0, L"CallTrEEService (read data) returned 0 bytes written");
+
+        //
+        // The service will return classic "Hello, world!" message.
+        //
+        TEST_COMMENT(L"TEST_SERVICE_HELLO_WORLD returned: %ws", HelloWorld);
+    }
+
+    if ((TestFlag & 0x2) != 0) {
+        TEST_COMMENT(L"\n::::: TEST_SERVICE_GET_INTERRUPT_TIME");
+
+        ULONG64 InterruptTime;
+
+        Success = CallTrEEService(TestServiceHandle,
+                                  TEST_SERVICE_GET_INTERRUPT_TIME,
+                                  NULL, 0,
+                                  &InterruptTime, sizeof(InterruptTime),
+                                  &BytesWritten);
+
+        TEST_ASSERT(Success, L"CallTrEEService (read data) failed (err=%d)", GetLastError());
+        TEST_ASSERT(BytesWritten == sizeof(ULONG64),
+                    L"CallTrEEService (read data) returned unexpected number of bytes (BytesWritten=%d)",
+                    BytesWritten);
+
+        TEST_COMMENT(L"TEST_SERVICE_GET_INTERRUPT_TIME returned: %I64x", InterruptTime);
+    }
+
+    if ((TestFlag & 0x4) != 0) {
+        TEST_COMMENT(L"\n::::: TEST_SERVICE_KERNEL_ONLY");
+
+        DWORD Error;
+
+        //
+        // This call is available only from kernel mode. The service will fail
+        // the request if it came from usermode.
+        //
+        Success = CallTrEEService(TestServiceHandle,
+                                  TEST_SERVICE_KERNEL_ONLY,
+                                  NULL, 0,
+                                  NULL, 0,
+                                  &BytesWritten);
+
+        Error = GetLastError();
+
+        TEST_ASSERT(!Success, L"CallTrEEService unexpectedly succeeded");
+
+        TEST_COMMENT(L"TEST_SERVICE_KERNEL_ONLY failed with err=%d", Error);
+    }
+
+    {
+        DWORD Error;
+        ULONG Input;
+        ULONG Output;
+        PASYNC_TREE_CALL AsyncContext;
+
+        if ((TestFlag & 0x8) != 0) {
+            TEST_COMMENT(L"\n::::: TEST_SERVICE_DELAYED_COMPLETION(1500ms, synchronous wait)");
+            Input = 1500;
+            Output = 0;
+            Success = CallTrEEService(TestServiceHandle,
+                                      TEST_SERVICE_DELAYED_COMPLETION,
+                                      &Input, sizeof(Input),
+                                      &Output, sizeof(Output),
+                                      &BytesWritten);
+
+            TEST_ASSERT(Success, L"CallTrEEService failed (err=%d)", GetLastError());
+            TEST_ASSERT(BytesWritten == sizeof(Output),
+                        L"CallTrEEService returned unexpected number of bytes (BytesWritten=%d)",
+                        BytesWritten);
+
+            TEST_COMMENT(L"Output buffer contains: %08x", Output);
+        }
+
+        if ((TestFlag & 0x10) != 0) {
+            TEST_COMMENT(L"\n::::: TEST_SERVICE_DELAYED_COMPLETION(5000ms, asynchronous wait)");
+            Input = 5000;
+            Output = 0;
+
+            //
+            // CallTrEEServiceEx is called to demonstrate asynchronous operation.
+            //
+            Success = CallTrEEServiceEx(TestServiceHandle,
+                                        TEST_SERVICE_DELAYED_COMPLETION,
+                                        &Input, sizeof(Input),
+                                        &Output, sizeof(Output),
+                                        &BytesWritten,
+                                        &AsyncContext);
+
+            Error = GetLastError();
+
+            TEST_ASSERT(!Success, L"CallTrEEServiceEx unexpectedly succeeded");
+            TEST_ASSERT(GetLastError() == ERROR_IO_PENDING,
+                        L"CallTrEEServiceEx returned unexpected error code (err=%d)",
+                        Error);
+
+            while (true) {
+                TEST_COMMENT(L"Waiting for completion...");
+                Error = WaitForSingleObject(AsyncContext->Overlapped.hEvent, 500);
+
+                TEST_ASSERT((Error == STATUS_TIMEOUT) || (Error == STATUS_WAIT_0),
+                            L"WaitForSingleObject returned unexpected value %d",
+                            Error);
+
+                if (Error == STATUS_WAIT_0) {
+                    break;
+                }
+            }
+
+            TEST_ASSERT(AsyncContext->Overlapped.Internal == STATUS_SUCCESS,
+                        L"Request failed (NTSTATUS=%08x)",
+                        (NTSTATUS)AsyncContext->Overlapped.Internal);
+
+            //
+            // IOCTL's output buffer points to TR_SERVICE_REQUEST_RESPONSE. So this
+            // request's number of bytes written is always sizeof(TR_SERVICE_REQUEST_RESPONSE).
+            //
+            TEST_ASSERT(AsyncContext->Overlapped.InternalHigh == sizeof(TR_SERVICE_REQUEST_RESPONSE),
+                        L"Request response size incorrect (BytesWritten=%u)",
+                        (ULONG)AsyncContext->Overlapped.InternalHigh);
+
+            //
+            // Number of bytes written to secure request's output buffer is
+            // returned in TR_SERVICE_REQUEST_RESPONSE::BytesWritten.
+            //
+            TEST_ASSERT(AsyncContext->Response.BytesWritten == sizeof(ULONG),
+                        L"Number of bytes written to output buffer incorrect (BytesWritten=%u)",
+                        (ULONG)AsyncContext->Response.BytesWritten);
+
+            TEST_COMMENT(L"Output buffer contains: %08x", Output);
+
+            CleanupAsyncTrEECallContext(AsyncContext);
+        }
+
+        if ((TestFlag & 0x20) != 0) {
+            TEST_COMMENT(L"\n::::: TEST_SERVICE_DELAYED_COMPLETION(5000ms, asynchronous wait + cancel)");
+            Input = 5000;
+            Output = 0;
+            Success = CallTrEEServiceEx(TestServiceHandle,
+                                        TEST_SERVICE_DELAYED_COMPLETION,
+                                        &Input, sizeof(Input),
+                                        &Output, sizeof(Output),
+                                        &BytesWritten,
+                                        &AsyncContext);
+
+            Error = GetLastError();
+
+            TEST_ASSERT(!Success, L"CallTrEEServiceEx unexpectedly succeeded");
+            TEST_ASSERT(GetLastError() == ERROR_IO_PENDING,
+                        L"CallTrEEServiceEx returned unexpected error code (err=%d)",
+                        Error);
+
+            Sleep(1000);
+
+            TEST_COMMENT(L"Cancelling...");
+
+            //
+            // The request is cancelled before it can be completed.
+            //
+            Success = CancelIoEx(TestServiceHandle, &AsyncContext->Overlapped);
+
+            TEST_ASSERT(Success, L"CancelIoEx failed (err=%d)", GetLastError());
+
+            //
+            // When the cancellation is handled by the miniport driver, the request
+            // will have status STATUS_CANCELLED.
+            //
+            for (int i = 0; i < 10; ++i) {
+                TEST_COMMENT(L"Request status = %08x",
+                             (NTSTATUS)AsyncContext->Overlapped.Internal);
+
+                if ((NTSTATUS)AsyncContext->Overlapped.Internal == STATUS_CANCELLED) {
+                    break;
+                }
+
+                Sleep(20);
+            }
+
+            TEST_ASSERT((NTSTATUS)AsyncContext->Overlapped.Internal == STATUS_CANCELLED,
+                        L"Request not cancelled (NTSTATUS=%08x)",
+                        (NTSTATUS)AsyncContext->Overlapped.Internal);
+
+            CleanupAsyncTrEECallContext(AsyncContext);
+        }
+    }
+
+    {
+        DWORD Error;
+        ULONG Input;
+        ULONG Output;
+        OVERLAPPED Overlapped;
+
+        if ((TestFlag & 0x40) != 0) {
+            TEST_COMMENT(L"\n::::: IOCTL_TEST_DELAYED_COMPLETION(3000ms + async wait)");
+
+            memset(&Overlapped, 0, sizeof(Overlapped));
+            Overlapped.hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+
+            //
+            // Other I/O doesn't use TR_SERVICE_REQUEST structs. Use
+            // DeviceIocontrol and specify input and output buffers directly in
+            // parameters.
+            //
+            Input = 3000;
+            Output = 0;
+            Success = DeviceIoControl(TestServiceHandle,
+                                      IOCTL_TEST_DELAYED_COMPLETION,
+                                      &Input, sizeof(Input),
+                                      &Output, sizeof(Output),
+                                      &BytesWritten,
+                                      &Overlapped);
+
+            Error = GetLastError();
+
+            TEST_ASSERT(!Success, L"CallTrEEServiceEx unexpectedly succeeded");
+            TEST_ASSERT(GetLastError() == ERROR_IO_PENDING,
+                        L"CallTrEEServiceEx returned unexpected error code (err=%d)",
+                        Error);
+
+            while (true) {
+                TEST_COMMENT(L"Waiting for completion...");
+                Error = WaitForSingleObject(Overlapped.hEvent, 500);
+
+                TEST_ASSERT((Error == STATUS_TIMEOUT) || (Error == STATUS_WAIT_0),
+                            L"WaitForSingleObject returned unexpected value %d",
+                            Error);
+
+                if (Error == STATUS_WAIT_0) {
+                    break;
+                }
+            }
+
+            TEST_ASSERT(Overlapped.Internal == STATUS_SUCCESS,
+                        L"Request failed (NTSTATUS=%08x)",
+                        (NTSTATUS)Overlapped.Internal);
+
+            //
+            // IOCTL's output buffer points to ULONG Output.
+            //
+            TEST_ASSERT(Overlapped.InternalHigh == sizeof(ULONG),
+                        L"Request response size incorrect (BytesWritten=%u)",
+                        (ULONG)Overlapped.InternalHigh);
+
+            TEST_COMMENT(L"Output buffer contains: %08x", Output);
+        }
+
+        if ((TestFlag & 0x80) != 0) {
+            TEST_COMMENT(L"\n::::: IOCTL_TEST_DELAYED_COMPLETION(5000ms, asynchronous wait + cancel)");
+            Overlapped.Internal = 0;
+            Overlapped.InternalHigh = 0;
+            Overlapped.Offset = 0;
+            Overlapped.OffsetHigh = 0;
+            Overlapped.Pointer = 0;
+            Input = 5000;
+            Output = 0;
+            Success = DeviceIoControl(TestServiceHandle,
+                                      IOCTL_TEST_DELAYED_COMPLETION,
+                                      &Input, sizeof(Input),
+                                      &Output, sizeof(Output),
+                                      &BytesWritten,
+                                      &Overlapped);
+
+            Error = GetLastError();
+
+            TEST_ASSERT(!Success, L"CallTrEEServiceEx unexpectedly succeeded");
+            TEST_ASSERT(GetLastError() == ERROR_IO_PENDING,
+                        L"CallTrEEServiceEx returned unexpected error code (err=%d)",
+                        Error);
+
+            Sleep(1000);
+
+            TEST_COMMENT(L"Cancelling...");
+
+            //
+            // The request is cancelled before it can be completed.
+            //
+            Success = CancelIoEx(TestServiceHandle, &Overlapped);
+
+            TEST_ASSERT(Success, L"CancelIoEx failed (err=%d)", GetLastError());
+
+            //
+            // When the cancellation is handled by the miniport driver, the request
+            // will have status STATUS_CANCELLED.
+            //
+            for (int i = 0; i < 10; ++i) {
+                TEST_COMMENT(L"Request status = %08x",
+                             (NTSTATUS)Overlapped.Internal);
+
+                if ((NTSTATUS)Overlapped.Internal == STATUS_CANCELLED) {
+                    break;
+                }
+
+                Sleep(20);
+            }
+
+            TEST_ASSERT((NTSTATUS)Overlapped.Internal == STATUS_CANCELLED,
+                        L"Request not cancelled (NTSTATUS=%08x)",
+                        (NTSTATUS)Overlapped.Internal);
+
+            CloseHandle(Overlapped.hEvent);
+        }
+    }
+
+    //
+    // Open the service using PnP device interface.
+    //
+    Test2ServiceHandle = OpenServiceHandleByInterface(&GUID_SAMPLE_TEST2_SERVICE);
+    TEST_ASSERT(Test2ServiceHandle != INVALID_HANDLE_VALUE, L"Test2 service open failed");
+
+    {
+        char Input[64];
+        size_t InputLength;
+        char Output[128];
+
+        if ((TestFlag & 0x100) != 0)
+        {
+            //
+            // This service talks to another driversin OS. Refer to
+            // miniport\TestService.c to see how the miniport driver sends requests
+            // to other drivers.
+            //
+            TEST_COMMENT(L"\n::::: TEST2_SERVICE_ECHO");
+
+            strcpy_s(Input, "Hello from usermode");
+            InputLength = strlen(Input);
+            memset(Output, 0, sizeof(Output));
+            Success = CallTrEEService(Test2ServiceHandle,
+                                      TEST2_SERVICE_ECHO,
+                                      Input, (ULONG)InputLength,
+                                      Output, sizeof(Output),
+                                      &BytesWritten);
+
+            TEST_ASSERT(Success, L"CallTrEEService failed (err=%d)", GetLastError());
+            TEST_ASSERT(BytesWritten == InputLength,
+                        L"CallTrEEService returned unexpected number of bytes (BytesWritten=%d)",
+                        BytesWritten);
+
+            TEST_COMMENT(L"Output buffer contains: %hs", Output);
+        }
+
+        if ((TestFlag & 0x200) != 0)
+        {
+            TEST_COMMENT(L"\n::::: TEST2_SERVICE_TWICE_REVERSED");
+
+            strcpy_s(Input, "Hello from usermode");
+            InputLength = strlen(Input);
+            memset(Output, 0, sizeof(Output));
+            Success = CallTrEEService(Test2ServiceHandle,
+                                      TEST2_SERVICE_ECHO_TWICE_REVERSED,
+                                      Input, (ULONG)InputLength,
+                                      Output, sizeof(Output),
+                                      &BytesWritten);
+
+            TEST_ASSERT(Success, L"CallTrEEService failed (err=%d)", GetLastError());
+            TEST_ASSERT(BytesWritten == InputLength * 2,
+                        L"CallTrEEService returned unexpected number of bytes (BytesWritten=%d)",
+                        BytesWritten);
+
+            TEST_COMMENT(L"Output buffer contains: %hs", Output);
+        }
+    }
+
+    //
+    // Open the master device using PnP device interface.
+    //
+    MasterDeviceHandle = CreateFileW(L"\\\\.\\SampleTrEEDriver",
+                                     FILE_READ_DATA | FILE_WRITE_DATA,
+                                     0,
+                                     NULL,
+                                     OPEN_EXISTING,
+                                     FILE_FLAG_OVERLAPPED,
+                                     NULL);
+
+    TEST_ASSERT(MasterDeviceHandle != INVALID_HANDLE_VALUE, L"Master device open failed");
+
+    if ((TestFlag & 0x400) != 0)
+    {
+        TEST_COMMENT(L"\n::::: IOCTL_SAMPLE_DBGPRINT");
+
+        Success = DeviceIoControl(MasterDeviceHandle,
+                                  IOCTL_SAMPLE_DBGPRINT,
+                                  TEST_STRING, sizeof(TEST_STRING),
+                                  NULL, 0,
+                                  &BytesWritten,
+                                  NULL);
+
+        TEST_ASSERT(Success, L"CallTrEEService failed (err=%d)", GetLastError());
+    }
+
+End:
+    if (TestServiceHandle != INVALID_HANDLE_VALUE) {
+        CloseHandle(TestServiceHandle);
+    }
+
+    if (Test2ServiceHandle != INVALID_HANDLE_VALUE) {
+        CloseHandle(Test2ServiceHandle);
+    }
+
+    if (MasterDeviceHandle != INVALID_HANDLE_VALUE) {
+        CloseHandle(MasterDeviceHandle);
+    }
+
+    return 0;
+}
\ No newline at end of file
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new file mode 100644
index 00000000..dbf5824f
--- /dev/null
+++ b/TrEE/Test/TrEESampleTest.vcxproj
@@ -0,0 +1,256 @@
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\ No newline at end of file
diff --git a/TrEE/Test/TrEESampleTest.vcxproj.Filters b/TrEE/Test/TrEESampleTest.vcxproj.Filters
new file mode 100644
index 00000000..0bc02bf0
--- /dev/null
+++ b/TrEE/Test/TrEESampleTest.vcxproj.Filters
@@ -0,0 +1,22 @@
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\ No newline at end of file