Driver manager module. Allow to load, start, stop and unload driver on all version of Windows

drv_mgr.c

#include <windows.h>
#include "drv_mgr.h"

SC_HANDLE install_driver(const wchar_t *name, const wchar_t *path)
{
  SC_HANDLE h_scm;
	SC_HANDLE h_svc = INVALID_HANDLE_VALUE;

	if (!path || !name)
		return INVALID_HANDLE_VALUE;

	h_scm = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
	if (h_scm) {
		h_svc = CreateServiceW(
			h_scm,name,name,
			SERVICE_ALL_ACCESS,
			SERVICE_KERNEL_DRIVER,
			SERVICE_DEMAND_START,
			SERVICE_ERROR_IGNORE,
			path, NULL, NULL, NULL, NULL, NULL);

		if (!h_svc)
			h_svc = OpenServiceW(h_scm, name, SERVICE_ALL_ACCESS);

		CloseServiceHandle(h_scm);
	}

	return h_svc;
}

SC_HANDLE open_driver(const wchar_t *name)
{
	SC_HANDLE h_scm;
	SC_HANDLE h_svc = NULL;

	if (!name)
		return INVALID_HANDLE_VALUE;

	h_scm = OpenSCManagerW(NULL, NULL, SC_MANAGER_ALL_ACCESS);
	if (h_scm) {
		h_svc = OpenServiceW(h_scm, name, SERVICE_ALL_ACCESS);
		CloseServiceHandle(h_scm);
	}

	return h_svc;
}

DWORD query_status(SC_HANDLE h_svc) 
{
	SERVICE_STATUS_PROCESS ssp;
	ULONG bytes;

	ssp.dwCurrentState = 0;
	QueryServiceStatusEx( 
		h_svc, 
		SC_STATUS_PROCESS_INFO,
		(LPBYTE)&ssp, 
		sizeof(SERVICE_STATUS_PROCESS),
		&bytes);

	return ssp.dwCurrentState;
}

int start_driver(SC_HANDLE h_svc)
{
	ULONG status = 0;
	if (!h_svc)
		return 0;

	status = query_status(h_svc);
	if (status != SERVICE_RUNNING)
		return StartServiceW(h_svc, 0, NULL);
	return 1;
}

int stop_driver(SC_HANDLE h_svc)
{
	ULONG status = 0;
	SERVICE_STATUS	svc_status;

	if (!h_svc)
		return 0;

	status = query_status(h_svc);
	if (status != SERVICE_STOPPED)
		return ControlService(h_svc, SERVICE_CONTROL_STOP, &svc_status);
	return 1;
}

int uninstall_driver(SC_HANDLE h_svc)
{
	ULONG status = 0;

	status = DeleteService(h_svc);
	CloseServiceHandle(h_svc);

	return status;
}

drv_mgr.h

#ifndef _DRV_MGR_
#define _DRV_MGR_

SC_HANDLE install_driver(const wchar_t *name, const wchar_t *path);
SC_HANDLE open_driver(const wchar_t *name);
int       start_driver(SC_HANDLE h_svc);
int       stop_driver(SC_HANDLE h_svc);
DWORD     query_status(SC_HANDLE h_svc) ;
int       uninstall_driver(SC_HANDLE h_svc);

#endif /* _DRV_MGR_ */