umdf2 driver with CreateService - c++

Question

Can I launch umdf2 driver using CreateService and StartService APIs in Windows 10? I am looking for any running sample that I could refer.
I have done it with WDM driver previously, but currently I failed to do it with umdf2 driver. Here is the code
WCHAR strPath[MAX_PATH];
GetCurrentDirectory(MAX_PATH, strPath);
std::wstring binaryPath(strPath);
binaryPath += L"\\" + pDeviceName + L".dll";
std::string logPath(binaryPath.begin(), binaryPath.end());
cout << "Load Path : " << logPath << endl;
SC_HANDLE hManager, hService;
hManager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if (!hManager) {
DWORD err = GetLastError();
if (err == ERROR_ACCESS_DENIED) {
cout << "OPenSCManager Access denied - run administration access" << endl;
} else {
cout << "OPenSCManager Error : " << err << endl;
}
return;
}
hService = CreateService(hManager, pDeviceName.c_str(), pDeviceName.c_str(), SERVICE_ALL_ACCESS, SERVICE_KERNEL_DRIVER, SERVICE_DEMAND_START,
SERVICE_ERROR_NORMAL, binaryPath.c_str(), NULL, NULL, NULL, NULL, NULL);
if (!hService) {
hService = OpenService(hManager, pDeviceName.c_str(), SERVICE_ALL_ACCESS);
if (!hService) {
CloseServiceHandle(hManager);
return;
}
}
if (!StartService(hService, 0, NULL)) {
DWORD err = GetLastError();
cout << "StartService Error : " << err << endl;
if (err == ERROR_SERVICE_ALREADY_RUNNING) {
cout << "Already running" << endl;
}
}
CloseServiceHandle(hManager);
CloseServiceHandle(hService);
pDeviceName refers to the driver name. Code execution fails with error 2:
StartService Error : 2
I tested this in both Win7 and Win10 and the result is same.

Answer 1

The error code has told us the most of things:
The system cannot find the file specified.
First, check the (pDeviceName).dll is located in Current Directory.
Second, check its dependencies with tools like Dependency Walker, move them to Current Directory or System Directory to make sure the system can also find the dependencies.
Then try to check the "regedit", Open the key HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\pDeviceName, or other similar names. Check the Key value "ImagePath", the path was the first time you have create it. Move dll to the Path or Change the Path to dll.