Add ioctrl tests

src/runner/main.cpp

@@ -7,6 +7,51 @@
 
 #define SERVICE_NAME "MomoLul"
 
+#define HELLO_DRV_IOCTL CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_NEITHER, FILE_ANY_ACCESS)
+const char kDevName[] = "\\\\.\\HelloDev";
+
+HANDLE open_device(const char* device_name)
+{
+	HANDLE device = CreateFileA(device_name,
+	                            GENERIC_READ | GENERIC_WRITE,
+	                            NULL,
+	                            NULL,
+	                            OPEN_EXISTING,
+	                            NULL,
+	                            NULL
+	);
+	return device;
+}
+
+void close_device(HANDLE device)
+{
+	CloseHandle(device);
+}
+
+BOOL send_ioctl(HANDLE device, DWORD ioctl_code)
+{
+	//prepare input buffer:
+	DWORD bufSize = 0x4;
+	BYTE* inBuffer = (BYTE*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, bufSize);
+
+	//fill the buffer with some content:
+	RtlFillMemory(inBuffer, bufSize, 'A');
+
+	DWORD size_returned = 0;
+	BOOL is_ok = DeviceIoControl(device,
+	                             ioctl_code,
+	                             inBuffer,
+	                             bufSize,
+	                             NULL, //outBuffer -> None
+	                             0, //outBuffer size -> 0
+	                             &size_returned,
+	                             NULL
+	);
+	//release the input bufffer:
+	HeapFree(GetProcessHeap(), 0, (LPVOID)inBuffer);
+	return is_ok;
+}
+
 std::filesystem::path get_current_path()
 {
 	const auto module = GetModuleHandleA(nullptr);
@@ -64,6 +109,18 @@ int main(const int /*argc*/, char* /*argv*/[])
 	if (service)
 	{
 		StartServiceA(service, 0, nullptr);
+
+		HANDLE dev = open_device(kDevName);
+		if (dev == INVALID_HANDLE_VALUE)
+		{
+			printf("Failed!\n");
+			return -1;
+		}
+
+		send_ioctl(dev, HELLO_DRV_IOCTL);
+
+		close_device(dev);
+
 		MessageBoxA(0, "Service started!", 0, 0);
 	}
 	return 0;