应用层 加载驱动 和 卸载驱动代码

BOOL LoadDriver(char* lpszDriverName,char* lpszDriverPath){    char szDriverImagePath[256] = {0};    //得到完整的驱动路径    GetFullPathName(lpszDriverPath, 256, szDriverImagePath, NULL);    BOOL bRet = FALSE;    SC_HANDLE hServiceMgr=NULL;//SCM管理器的句柄    SC_HANDLE hServiceDDK=NULL;//NT驱动程序的服务句柄    //打开服务控制管理器    hServiceMgr = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_access );    if( hServiceMgr == NULL )      {        //OpenSCManager失败        PRintf( "OpenSCManager() Faild %d ! /n", GetLastError() );        bRet = FALSE;        goto BeforeLeave;    }    else    {        //OpenSCManager成功        printf( "OpenSCManager() ok ! /n" );      }    //创建驱动所对应的服务    hServiceDDK = CreateService( hServiceMgr,        lpszDriverName, //驱动程序的在注册表中的名字          lpszDriverName, // 注册表驱动程序的 DisplayName 值          SERVICE_ALL_ACCESS, // 加载驱动程序的访问权限          SERVICE_KERNEL_DRIVER,// 表示加载的服务是驱动程序          SERVICE_DEMAND_START, // 注册表驱动程序的 Start 值          SERVICE_ERROR_IGNORE, // 注册表驱动程序的 ErrorControl 值          szDriverImagePath, // 注册表驱动程序的 ImagePath 值          NULL,  //GroupOrder HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control/GroupOrderList        NULL,          NULL,          NULL,          NULL);      DWord dwRtn;    //判断服务是否失败    if( hServiceDDK == NULL )      {          dwRtn = GetLastError();        if( dwRtn != ERROR_IO_PENDING && dwRtn != ERROR_SERVICE_EXISTS )          {              //由于其他原因创建服务失败            printf( "CrateService() Faild %d ! /n", dwRtn );              bRet = FALSE;            goto BeforeLeave;        }          else          {            //服务创建失败，是由于服务已经创立过            printf( "CrateService() Faild Service is ERROR_IO_PENDING or ERROR_SERVICE_EXISTS! /n" );          }        // 驱动程序已经加载，只需要打开          hServiceDDK = OpenService( hServiceMgr, lpszDriverName, SERVICE_ALL_ACCESS );          if( hServiceDDK == NULL )          {            //如果打开服务也失败，则意味错误            dwRtn = GetLastError();              printf( "OpenService() Faild %d ! /n", dwRtn );              bRet = FALSE;            goto BeforeLeave;        }          else         {            printf( "OpenService() ok ! /n" );        }    }      else      {        printf( "CrateService() ok ! /n" );    }    //开启此项服务    bRet= StartService( hServiceDDK, NULL, NULL );      if( !bRet )      {          DWORD dwRtn = GetLastError();          if( dwRtn != ERROR_IO_PENDING && dwRtn != ERROR_SERVICE_ALREADY_RUNNING )          {              printf( "StartService() Faild %d ! /n", dwRtn );              bRet = FALSE;            goto BeforeLeave;        }          else          {              if( dwRtn == ERROR_IO_PENDING )              {                  //设备被挂住                printf( "StartService() Faild ERROR_IO_PENDING ! /n");                bRet = FALSE;                goto BeforeLeave;            }              else              {                  //服务已经开启                printf( "StartService() Faild ERROR_SERVICE_ALREADY_RUNNING ! /n");                bRet = TRUE;                goto BeforeLeave;            }          }      }    bRet = TRUE;//离开前关闭句柄BeforeLeave:    if(hServiceDDK)    {        CloseServiceHandle(hServiceDDK);    }    if(hServiceMgr)    {        CloseServiceHandle(hServiceMgr);    }    return bRet;}//卸载驱动程序BOOL UnloadDriver( char * szSvrName )  {    BOOL bRet = FALSE;    SC_HANDLE hServiceMgr=NULL;//SCM管理器的句柄    SC_HANDLE hServiceDDK=NULL;//NT驱动程序的服务句柄    SERVICE_STATUS SvrSta;    //打开SCM管理器    hServiceMgr = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS );      if( hServiceMgr == NULL )      {        //带开SCM管理器失败        printf( "OpenSCManager() Faild %d ! /n", GetLastError() );          bRet = FALSE;        goto BeforeLeave;    }      else      {        //带开SCM管理器失败成功        printf( "OpenSCManager() ok ! /n" );      }    //打开驱动所对应的服务    hServiceDDK = OpenService( hServiceMgr, szSvrName, SERVICE_ALL_ACCESS );      if( hServiceDDK == NULL )      {        //打开驱动所对应的服务失败        printf( "OpenService() Faild %d ! /n", GetLastError() );          bRet = FALSE;        goto BeforeLeave;    }      else      {          printf( "OpenService() ok ! /n" );      }      //停止驱动程序，如果停止失败，只有重新启动才能，再动态加载。      if( !ControlService( hServiceDDK, SERVICE_CONTROL_STOP , &SvrSta ) )      {          printf( "ControlService() Faild %d !/n", GetLastError() );      }      else      {        //打开驱动所对应的失败        printf( "ControlService() ok !/n" );      }      //动态卸载驱动程序。      if( !DeleteService( hServiceDDK ) )      {        //卸载失败        printf( "DeleteSrevice() Faild %d !/n", GetLastError() );      }      else      {          //卸载成功        printf( "DelServer:deleteSrevice() ok !/n" );      }      bRet = TRUE;BeforeLeave://离开前关闭打开的句柄    if(hServiceDDK)    {        CloseServiceHandle(hServiceDDK);    }    if(hServiceMgr)    {        CloseServiceHandle(hServiceMgr);    }    return bRet;    }