关于动态加载驱动的问题？

各位高手：
不知道哪位使用过Service API动态加载过核心驱动？我曾经读过sinister写的一篇关于这方面的文章，虽然我在本机测试成功，但是我到别的机器上总是不能成功。后来，我用DriverMonitor可以加载，别人说，DriverMornitor也是使用Service API加载驱动的，所以我想问问，对于驱动有没有特殊要求？有没有这方面的开发经验？这里是sinister的写的文章：
http://www.whitecell.org/list.php?id=22

for load, there is no special request, but for unload, it does have many request.

必须是NT式驱动，带PNP的不行。


------------------------

同意zdhe
unload时必须做好相应的清理工作，否则系统不会让驱动卸载，只是做上标记此服务已删除，重新启动后不再加载此驱动。

[编辑 -  6/18/02 by  fqjp]

虚哟阿做一些什么清楚工作呢？我就是遇到了你说得这个问题，删除只是加载了删除标记，从而导致下次加载失败。

停止，然后删除服务整个过程应该是没有删除设备对象的
我们做了个东东是这样的，我的理解是没有理会DriverUnload，
结果再不reboot直接启动服务就不行了，那么就得自己动手在
停服务前删设备对象了，酱子么？

停止，然后删除服务整个过程应该是没有删除设备对象的
我们做了个东东是这样的，我的理解是没有理会DriverUnload，
结果再不reboot直接启动服务就不行了，那么就得自己动手在
停服务前删设备对象了，酱子么？

我已经测试成功了使用Service API可以动态加载、卸载内核驱动了，但是我并没有遇到你说的必须reboot才能启动服务的，在调用DeleteService之后，再次调用CreateService、StartService就可以启动了，好像必须使用ControlService读取Service状态信息判断之后才能确定服务的状态。《Undocument NT》中有一个例子InstSrv，《Programming WDM》中也有一个不太完整的例子install.cpp。

再次启动前用Object Viewer一看，设备对象还在，我跟踪了一下，重启服务时代码在StartServie处出来了，看来我要先看看服务状态...呵呵

再次启动前用Object Viewer一看，设备对象还在，我跟踪了一下，重启服务时代码在StartServie处出来了，看来我要先看看服务状态...呵呵

是的，你也可以查看StartService的错误码，是不是ERROR_SERVICE_ALREADY_RUNNING，然后做进一步的处理。

这是，InstDriver的例子，好像是《UndocumentNT》中的。
/////////////////////////////////////////////////
#include \"stdafx.h\"
#include \"winsvc.h\"

BOOL
InstallDriver(
    IN SC_HANDLE  SchSCManager,
    IN LPCTSTR    DriverName,
    IN LPCTSTR    ServiceExe
    );

BOOL
StartDriver(
    IN SC_HANDLE  SchSCManager,
    IN LPCTSTR    DriverName
    );

BOOL
OpenDevice(
    IN LPCTSTR    DriverName, HANDLE * lphDevice
    );

BOOL
StopDriver(
    IN SC_HANDLE  SchSCManager,
    IN LPCTSTR    DriverName
    );

BOOL
RemoveDriver(
    IN SC_HANDLE  SchSCManager,
    IN LPCTSTR    DriverName
    );



/****************************************************************************
*
*    FUNCTION: LoadDeviceDriver( const TCHAR, const TCHAR, HANDLE *)
*
*    PURPOSE: Registers a driver with the system configuration manager
* and then loads it.
*
****************************************************************************/
BOOL LoadDeviceDriver( const TCHAR * Name, const TCHAR * Path, HANDLE * lphDevice )
{
SC_HANDLE schSCManager;
BOOL okay;

schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS );

// Ignore success of installation: it may already be installed.
InstallDriver( schSCManager, Name, Path );

// Ignore success of start: it may already be started.
StartDriver( schSCManager, Name );

// Do make sure we can open it.
okay = OpenDevice( Name, lphDevice );

  CloseServiceHandle( schSCManager );

return okay;
}


/****************************************************************************
*
*    FUNCTION: InstallDriver( IN SC_HANDLE, IN LPCTSTR, IN LPCTSTR)
*
*    PURPOSE: Creates a driver service.
*
****************************************************************************/
BOOL InstallDriver( IN SC_HANDLE SchSCManager, IN LPCTSTR DriverName, IN LPCTSTR ServiceExe )
{
    SC_HANDLE  schService;

    //
    // NOTE: This creates an entry for a standalone driver. If this
    //       is modified for use with a driver that requires a Tag,
    //       Group, and/or Dependencies, it may be necessary to
    //       query the registry for existing driver information
    //       (in order to determine a unique Tag, etc.).
    //

    schService = CreateService( SchSCManager,          // SCManager database
                                DriverName,           // name of service
                                DriverName,           // name to display
                                SERVICE_ALL_ACCESS,    // desired access
                                SERVICE_KERNEL_DRIVER, // service type
                                SERVICE_DEMAND_START,  // start type
                                SERVICE_ERROR_NORMAL,  // error control type
                                ServiceExe,            // service\'s binary
                                NULL,                  // no load ordering group
                                NULL,                  // no tag identifier
                                NULL,                  // no dependencies
                                NULL,                  // LocalSystem account
                                NULL                   // no password
                                );
    if ( schService == NULL )
        return FALSE;

    CloseServiceHandle( schService );

    return TRUE;
}


/****************************************************************************
*
*    FUNCTION: StartDriver( IN SC_HANDLE, IN LPCTSTR)
*
*    PURPOSE: Starts the driver service.
*
****************************************************************************/
BOOL StartDriver( IN SC_HANDLE SchSCManager, IN LPCTSTR DriverName )
{
    SC_HANDLE  schService;
    BOOL       ret;

    schService = OpenService( SchSCManager,
                              DriverName,
                              SERVICE_ALL_ACCESS
                              );
    if ( schService == NULL )
        return FALSE;

    ret = StartService( schService, 0, NULL )
       || GetLastError() == ERROR_SERVICE_ALREADY_RUNNING;

    CloseServiceHandle( schService );

    return ret;
}



/****************************************************************************
*
*    FUNCTION: OpenDevice( IN LPCTSTR, HANDLE *)
*
*    PURPOSE: Opens the device and returns a handle if desired.
*
****************************************************************************/
BOOL OpenDevice( IN LPCTSTR DriverName, HANDLE * lphDevice )
{
    TCHAR    completeDeviceName[64];
    HANDLE   hDevice;

    //
    // Create a \\\\.\\XXX device name that CreateFile can use
    //
    // NOTE: We\'re making an assumption here that the driver
    //       has created a symbolic link using it\'s own name
    //       (i.e. if the driver has the name \"XXX\" we assume
    //       that it used IoCreateSymbolicLink to create a
    //       symbolic link \"\\DosDevices\\XXX\". Usually, there
    //       is this understanding between related apps/drivers.
    //
    //       An application might also peruse the DEVICEMAP
    //       section of the registry, or use the QueryDosDevice
    //       API to enumerate the existing symbolic links in the
    //       system.
    //

    wsprintf( completeDeviceName, TEXT(\"\\\\\\\\.\\\\%s\"), DriverName );

    hDevice = CreateFile( completeDeviceName,
                          GENERIC_READ | GENERIC_WRITE,
                          0,
                          NULL,
                          OPEN_EXISTING,
                          FILE_ATTRIBUTE_NORMAL,
                          NULL
                          );
    if ( hDevice == ((HANDLE)-1) )
        return FALSE;

// If user wants handle, give it to them.  Otherwise, just close it.
if ( lphDevice )
*lphDevice = hDevice;
else
   CloseHandle( hDevice );

    return TRUE;
}


/****************************************************************************
*
*    FUNCTION: UnloadDeviceDriver( const TCHAR *)
*
*    PURPOSE: Stops the driver and has the configuration manager unload it.
*
****************************************************************************/
BOOL UnloadDeviceDriver( const TCHAR * Name )
{
SC_HANDLE schSCManager;

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

StopDriver( schSCManager, Name );
RemoveDriver( schSCManager, Name );

CloseServiceHandle( schSCManager );

return TRUE;
}



/****************************************************************************
*
*    FUNCTION: StopDriver( IN SC_HANDLE, IN LPCTSTR)
*
*    PURPOSE: Has the configuration manager stop the driver (unload it)
*
****************************************************************************/
BOOL StopDriver( IN SC_HANDLE SchSCManager, IN LPCTSTR DriverName )
{
    SC_HANDLE       schService;
    BOOL            ret;
    SERVICE_STATUS  serviceStatus;

    schService = OpenService( SchSCManager, DriverName, SERVICE_ALL_ACCESS );
    if ( schService == NULL )
        return FALSE;

    ret = ControlService( schService, SERVICE_CONTROL_STOP, &serviceStatus );

    CloseServiceHandle( schService );

    return ret;
}


/****************************************************************************
*
*    FUNCTION: RemoveDriver( IN SC_HANDLE, IN LPCTSTR)
*
*    PURPOSE: Deletes the driver service.
*
****************************************************************************/
BOOL RemoveDriver( IN SC_HANDLE SchSCManager, IN LPCTSTR DriverName )
{
    SC_HANDLE  schService;
    BOOL       ret;

    schService = OpenService( SchSCManager,
                              DriverName,
                              SERVICE_ALL_ACCESS
                              );

    if ( schService == NULL )
        return FALSE;

    ret = DeleteService( schService );

    CloseServiceHandle( schService );

    return ret;
}

////////////////////install.cpp来自《Programming WDM》
// install.cpp - NT style driver install program
// Copyright ?1998,1999 Chris Cant, PHD Computer Consultants Ltd

// 21-Jun-99 Updated to work better in W2000b3
// ControlService SERVICE_CONTROL_INTERROGATE now fails if driver stopped

// This is not a complete program

void InstallDriver( CString DriverName, CString DriverFromPath)
{
/////////////////////////////////////////////////////////////////////////
// Get System32 directory

_TCHAR System32Directory[_MAX_PATH];
if( 0==GetSystemDirectory(System32Directory,_MAX_PATH))
{
AfxMessageBox(\"Could not find Windows system directory\");
return;
}

/////////////////////////////////////////////////////////////////////////
// Copy driver .sys file across

CString DriverFullPath = System32Directory+\"\\\\Drivers\\\\\"+DriverName+\".sys\";
if( 0==CopyFile( DriverFromPath, DriverFullPath, FALSE)) // Overwrite OK
{
CString Msg;
Msg.Format(\"Could not copy %s to %s\", DriverFullPath, Drivers);
AfxMessageBox(Msg);
return;
}

/////////////////////////////////////////////////////////////////////////
// Create driver (or stop existing driver)

if( !CreateDriver( DriverName, DriverFullPath))
return;

/////////////////////////////////////////////////////////////////////////
// Create/Open driver registry key and set its values
// Overwrite registry values written in driver creation

HKEY mru;
DWORD disposition;
if( RegCreateKeyEx( HKEY_LOCAL_MACHINE, \"SYSTEM\\\\CurrentControlSet\\\\Services\\\\\"+DriverName,
0, \"\", 0, KEY_ALL_ACCESS, NULL, &mru, &disposition)
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not create driver registry key\");
return;
}
// Delete ImagePath
RegDeleteValue(mru,\"ImagePath\");
// Delete DisplayName
RegDeleteValue(mru,\"DisplayName\");
// ErrorControl
DWORD dwRegValue = SERVICE_ERROR_NORMAL;
if( RegSetValueEx(mru,\"ErrorControl\",0,REG_DWORD,(CONST BYTE*)&dwRegValue,sizeof(DWORD))
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not create driver registry value ErrorControl\");
return;
}
// Start
dwRegValue = SERVICE_AUTO_START;
if( RegSetValueEx(mru,\"Start\",0,REG_DWORD,(CONST BYTE*)&dwRegValue,sizeof(DWORD))
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not create driver registry value Start\");
return;
}
// Type
dwRegValue = SERVICE_KERNEL_DRIVER;
if( RegSetValueEx(mru,\"Type\",0,REG_DWORD,(CONST BYTE*)&dwRegValue,sizeof(DWORD))
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not create driver registry value Type\");
return;
}
/* Examples:
// DependOnGroup
_TCHAR DependOnGroup[] = \"Parallel arbitrator\\0\\0\";
if( RegSetValueEx(mru,\"DependOnGroup\",0,REG_MULTI_SZ,(CONST BYTE*)&DependOnGroup,strlen(DependOnGroup)+2)
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not create driver registry value DependOnGroup\");
return;
}
// DependOnService
_TCHAR DependOnService[] = \"parport\\0\\0\";
if( RegSetValueEx(mru,\"DependOnService\",0,REG_MULTI_SZ,(CONST BYTE*)&DependOnService,strlen(DependOnService)+2)
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not create driver registry value DependOnService\");
return;
}
*/
RegCloseKey(mru);

/* Example:
/////////////////////////////////////////////////////////////////////////
// Create/Open driver\\Parameters registry key and set its values

if( RegCreateKeyEx( HKEY_LOCAL_MACHINE, \"SYSTEM\\\\CurrentControlSet\\\\Services\\\\\"+DriverName+\"\\\\Parameters\",
0, \"\", 0, KEY_ALL_ACCESS, NULL, &mru, &disposition)
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not create driver\\\\Parameters registry key\");
return;
}
// EventLogLevel
dwRegValue = 1;
if( RegSetValueEx(mru,\"EventLogLevel\",0,REG_DWORD,(CONST BYTE*)&dwRegValue,sizeof(DWORD))
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not create driver\\\\Parameters registry value EventLogLevel\");
return;
}
// Default or No Name
CString DefaultName = DriverName;
int DeviceNameLen = DefaultName.GetLength()+1;
LPTSTR lpDefaultName = DefaultName.GetBuffer(DeviceNameLen);
if( RegSetValueEx(mru,\"\",0,REG_SZ,(CONST BYTE*)lpDefaultName,DeviceNameLen)
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not create driver\\\\Parameters default registry value\");
return;
}
DefaultName.ReleaseBuffer(0);
RegCloseKey(mru);
*/

/////////////////////////////////////////////////////////////////////////
// Open EventLog\\System registry key and set its values

if( RegCreateKeyEx( HKEY_LOCAL_MACHINE, \"SYSTEM\\\\CurrentControlSet\\\\Services\\\\EventLog\\\\System\",
0, \"\", 0, KEY_ALL_ACCESS, NULL, &mru, &disposition)
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not open EventLog\\\\System registry key\");
return;
}
// get Sources size
DWORD DataSize = 0;
DWORD Type;
if( RegQueryValueEx(mru,\"Sources\",NULL,&Type,NULL,&DataSize)
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not read size of EventLog\\\\System registry value Sources\");
return;
}
// read Sources
int DriverNameLen = strlen(DriverName);
DataSize += DriverNameLen+1;
LPTSTR Sources = new _TCHAR[DataSize];
if( RegQueryValueEx(mru,\"Sources\",NULL,&Type,(LPBYTE)Sources,&DataSize)
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not read EventLog\\\\System registry value Sources\");
return;
}
// If driver not there, add and write
if( FindInMultiSz(Sources,DataSize,DriverName)==-1)
{
strcpy(Sources+DataSize-1,DriverName);
DataSize += DriverNameLen;
*(Sources+DataSize) = \'\\0\';

if( RegSetValueEx(mru,\"Sources\",0,REG_MULTI_SZ,(CONST BYTE*)Sources,DataSize)
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not create driver registry value Sources\");
return;
}
}

/////////////////////////////////////////////////////////////////////////
// Create/Open EventLog\\System\\driver registry key and set its values

if( RegCreateKeyEx( HKEY_LOCAL_MACHINE, \"SYSTEM\\\\CurrentControlSet\\\\Services\\\\EventLog\\\\System\\\\\"+DriverName,
0, \"\", 0, KEY_ALL_ACCESS, NULL, &mru, &disposition)
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not create EventLog\\\\System\\\\driver registry key\");
return;
}
// TypesSupported
dwRegValue = 7;
if( RegSetValueEx(mru,\"TypesSupported\",0,REG_DWORD,(CONST BYTE*)&dwRegValue,sizeof(DWORD))
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not create EventLog\\\\System\\\\driver registry value TypesSupported\");
return;
}
// EventMessageFile
LPTSTR EventMessageFile = \"%SystemRoot%\\\\System32\\\\IoLogMsg.dll;%SystemRoot%\\\\System32\\\\Drivers\\\\\"+DriverName+\".sys\";
if( RegSetValueEx(mru,\"EventMessageFile\",0,REG_EXPAND_SZ,(CONST BYTE*)EventMessageFile,strlen(EventMessageFile)+1)
!= ERROR_SUCCESS)
{
AfxMessageBox(\"Could not create EventLog\\\\System\\\\driver registry value EventMessageFile\");
return;
}
RegCloseKey(mru);

/////////////////////////////////////////////////////////////////////////
// Start driver service

if( !StartDriver( DriverName))
return;
}


/////////////////////////////////////////////////////////////////////////////

BOOL CreateDriver( CString DriverName, CString FullDriver)
{
/////////////////////////////////////////////////////////////////////////
// Open service control manager

SC_HANDLE hSCManager = OpenSCManager(NULL,NULL,SC_MANAGER_ALL_ACCESS);
if( hSCManager==NULL)
{
AfxMessageBox(\"Could not open Service Control Manager\");
return FALSE;
}

/////////////////////////////////////////////////////////////////////////
// If driver is running, stop it

SC_HANDLE hDriver = OpenService(hSCManager,DriverName,SERVICE_ALL_ACCESS);
if( hDriver!=NULL)
{
SERVICE_STATUS ss;
if( ControlService(hDriver,SERVICE_CONTROL_INTERROGATE,&ss))
{
if( ss.dwCurrentState!=SERVICE_STOPPED)
{
if( !ControlService(hDriver,SERVICE_CONTROL_STOP,&ss))
{
AfxMessageBox(\"Could not stop driver\");
CloseServiceHandle(hDriver);
CloseServiceHandle(hSCManager);
return FALSE;
}
// Give it 10 seconds to stop
BOOL Stopped = FALSE;
for(int seconds=0;seconds<10;seconds++)
{
Sleep(1000);
if( ControlService(hDriver,SERVICE_CONTROL_INTERROGATE,&ss)==0 ||
ss.dwCurrentState==SERVICE_STOPPED)
{
Stopped = TRUE;
break;
}
}
if( !Stopped)
{
AfxMessageBox(\"Could not stop driver\");
CloseServiceHandle(hDriver);
CloseServiceHandle(hSCManager);
return FALSE;
}
}
}
CloseServiceHandle(hDriver);
CloseServiceHandle(hSCManager);
return TRUE;
}

/////////////////////////////////////////////////////////////////////////
// Create driver service

hDriver = CreateService(hSCManager,DriverName,DriverName,SERVICE_ALL_ACCESS,
SERVICE_KERNEL_DRIVER,SERVICE_AUTO_START,SERVICE_ERROR_NORMAL,
Drivers,NULL,NULL,NULL,NULL,NULL);
if( hDriver==NULL)
{
AfxMessageBox(\"Could not install driver with Service Control Manager\");
CloseServiceHandle(hSCManager);
return FALSE;
}

/////////////////////////////////////////////////////////////////////////
CloseServiceHandle(hDriver);
CloseServiceHandle(hSCManager);
return TRUE;
}

/////////////////////////////////////////////////////////////////////////////

BOOL StartDriver( CString DriverName)
{
/////////////////////////////////////////////////////////////////////////
// Open service control manager

SC_HANDLE hSCManager = OpenSCManager(NULL,NULL,SC_MANAGER_ALL_ACCESS);
if( hSCManager==NULL)
{
AfxMessageBox(\"Could not open Service Control Manager\");
return FALSE;
}

/////////////////////////////////////////////////////////////////////////

SC_HANDLE hDriver = OpenService(hSCManager,DriverName,SERVICE_ALL_ACCESS);
if( hDriver==NULL)
{
AfxMessageBox(\"Could not open driver service\");
CloseServiceHandle(hSCManager);
return FALSE;
}

SERVICE_STATUS ss;
if( ControlService(hDriver,SERVICE_CONTROL_INTERROGATE,&ss))
{
if( ss.dwCurrentState==SERVICE_RUNNING)
{
CloseServiceHandle(hDriver);
CloseServiceHandle(hSCManager);
return TRUE;
}
}
else if( GetLastError()!=ERROR_SERVICE_NOT_ACTIVE)
{
AfxMessageBox(\"Could not interrogate driver service\");
CloseServiceHandle(hDriver);
CloseServiceHandle(hSCManager);
return FALSE;
}
if( !StartService(hDriver,0,NULL))
{
AfxMessageBox(\"Could not start driver\");
CloseServiceHandle(hDriver);
CloseServiceHandle(hSCManager);
return FALSE;
}
// Give it 10 seconds to start
BOOL Started = FALSE;
for(int seconds=0;seconds<10;seconds++)
{
Sleep(1000);
if( ControlService(hDriver,SERVICE_CONTROL_INTERROGATE,&ss) &&
ss.dwCurrentState==SERVICE_RUNNING)
{
Started = TRUE;
break;
}
}
if( !Started)
{
AfxMessageBox(\"Could not start driver\");
CloseServiceHandle(hDriver);
CloseServiceHandle(hSCManager);
return FALSE;
}
CloseServiceHandle(hDriver);
CloseServiceHandle(hSCManager);
return TRUE;
}

/////////////////////////////////////////////////////////////////////////////
// Try to find Match in MultiSz, including Match\'s terminating \\0

int FindInMultiSz(LPTSTR MultiSz, int MultiSzLen, LPTSTR Match)
{
int MatchLen = strlen(Match);
_TCHAR FirstChar = *Match;
for(int i=0;i<MultiSzLen-MatchLen;i++)
{
if( *MultiSz++ == FirstChar)
{
BOOL Found = TRUE;
LPTSTR Try = MultiSz;
for(int j=1;j<=MatchLen;j++)
if( *Try++ != Match[j])
{
Found = FALSE;
break;
}
if( Found)
return i;
}
}
return -1;
}

/////////////////////////////////////////////////////////////////////////