How to start a self-written driver

Question

I wrote a driver in Visual Studio 2013. The building-Process was successful. Then I prepared a traget-computer and copied the driver-files to it. Then I installed the driver:

C:\Windows\system32>pnputil -a "E:\driverZeug\KmdfHelloWorldPackage\KmdfHelloWorld.inf"
Microsoft-PnP-Dienstprogramm

Verarbeitungsinf.:            KmdfHelloWorld.inf
Das Treiberpaket wurde erfolgreich hinzugefügt.
Veröffentlichter Name:            oem42.inf


Versuche gesamt:              1
Anzahl erfolgreicher Importe: 1

It seems like it was successful. I ran DebugView on the PC but now I don't know how to start the driver, so that I can see a debug-output. I have a DbgPrintEx()-Statement in my sourcecode.

Can someone tell me how to start this driver so that I can see the output.

This is the sourcecode of the driver:

#include <ntddk.h>
#include <wdf.h>
DRIVER_INITIALIZE DriverEntry;
EVT_WDF_DRIVER_DEVICE_ADD KmdfHelloWorldEvtDeviceAdd;

NTSTATUS DriverEntry(_In_ PDRIVER_OBJECT  DriverObject, _In_ PUNICODE_STRING RegistryPath)
{
    NTSTATUS status;
    WDF_DRIVER_CONFIG config;

    DbgPrintEx(DPFLTR_IHVDRIVER_ID, DPFLTR_INFO_LEVEL, "KmdfHelloWorld: DriverEntry\n");
    KdPrintEx((DPFLTR_IHVDRIVER_ID, DPFLTR_INFO_LEVEL, "KmdfHelloWorld: DriverEntry\n"));
    WDF_DRIVER_CONFIG_INIT(&config, KmdfHelloWorldEvtDeviceAdd);
    status = WdfDriverCreate(DriverObject, RegistryPath, WDF_NO_OBJECT_ATTRIBUTES, &config, WDF_NO_HANDLE);
    return status;
}

NTSTATUS KmdfHelloWorldEvtDeviceAdd(_In_ WDFDRIVER Driver, _Inout_ PWDFDEVICE_INIT DeviceInit)
{
    NTSTATUS status;
    WDFDEVICE hDevice;
    UNREFERENCED_PARAMETER(Driver);

    KdPrintEx((DPFLTR_IHVDRIVER_ID, DPFLTR_INFO_LEVEL, "KmdfHelloWorld: KmdfHelloWorldEvtDeviceAdd\n"));
    status = WdfDeviceCreate(&DeviceInit, WDF_NO_OBJECT_ATTRIBUTES, &hDevice);
    return status;
}

Answer 1

You need to make an EXE(testapp) that starts your driver if installation is already done. You can use below code in the application:

SC_HANDLE   schService;  
SC_HANDLE   schSCManager;

schSCManager = OpenSCManager(NULL,                   // local machine
                             NULL,                   // local database
                             SC_MANAGER_ALL_ACCESS   // access required
                             ); 

// Open the handle to the existing service.
schService = OpenService(SchSCManager,
                         DriverName, //name of the driver
                         SERVICE_ALL_ACCESS
                         );

StartService(schService,     // service identifier
                  0,              // number of arguments
                  NULL            // pointer to arguments
                  ));

You need add code according to your need. Try this.

For more info download the samples drivers and test apps provided by microsoft.