minifilter框架監控文件創建框架

#include <fltKernel.h>
#include <dontuse.h>
#include <suppress.h>

#pragma prefast(disable:__WARNING_ENCODE_MEMBER_FUNCTION_POINTER, "Not valid for kernel mode drivers")


PFLT_FILTER gFilterHandle;
ULONG_PTR OperationStatusCtx = 1;

#define PTDBG_TRACE_ROUTINES            0x00000001
#define PTDBG_TRACE_OPERATION_STATUS    0x00000002

ULONG gTraceFlags = 0;


#define PT_DBG_PRINT( _dbgLevel, _string )          \
    (FlagOn(gTraceFlags,(_dbgLevel)) ?              \
        DbgPrint _string :                          \
        ((int)0))

/*************************************************************************
    Prototypes
*************************************************************************/

DRIVER_INITIALIZE DriverEntry;


UCHAR * PsGetProcessImageFileName(__in PEPROCESS Process);

NTSTATUS
DriverEntry (
    _In_ PDRIVER_OBJECT DriverObject,
    _In_ PUNICODE_STRING RegistryPath
    );

NTSTATUS
FsFilter1InstanceSetup (
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _In_ FLT_INSTANCE_SETUP_FLAGS Flags,
    _In_ DEVICE_TYPE VolumeDeviceType,
    _In_ FLT_FILESYSTEM_TYPE VolumeFilesystemType
    );

VOID
FsFilter1InstanceTeardownStart (
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _In_ FLT_INSTANCE_TEARDOWN_FLAGS Flags
    );

VOID
FsFilter1InstanceTeardownComplete (
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _In_ FLT_INSTANCE_TEARDOWN_FLAGS Flags
    );

NTSTATUS
FsFilter1Unload (
    _In_ FLT_FILTER_UNLOAD_FLAGS Flags
    );

NTSTATUS
FsFilter1InstanceQueryTeardown (
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _In_ FLT_INSTANCE_QUERY_TEARDOWN_FLAGS Flags
    );

FLT_PREOP_CALLBACK_STATUS
FsFilter1PreOperation (
    _Inout_ PFLT_CALLBACK_DATA Data,
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _Flt_CompletionContext_Outptr_ PVOID *CompletionContext
    );

VOID
FsFilter1OperationStatusCallback (
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _In_ PFLT_IO_PARAMETER_BLOCK ParameterSnapshot,
    _In_ NTSTATUS OperationStatus,
    _In_ PVOID RequesterContext
    );

FLT_POSTOP_CALLBACK_STATUS
FsFilter1PostOperation (
    _Inout_ PFLT_CALLBACK_DATA Data,
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _In_opt_ PVOID CompletionContext,
    _In_ FLT_POST_OPERATION_FLAGS Flags
    );

FLT_PREOP_CALLBACK_STATUS
FsFilter1PreOperationNoPostOperation (
    _Inout_ PFLT_CALLBACK_DATA Data,
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _Flt_CompletionContext_Outptr_ PVOID *CompletionContext
    );

BOOLEAN
FsFilter1DoRequestOperationStatus(
    _In_ PFLT_CALLBACK_DATA Data
    );

//
//  Assign text sections for each routine.
//

#ifdef ALLOC_PRAGMA
#pragma alloc_text(INIT, DriverEntry)
#pragma alloc_text(PAGE, FsFilter1Unload)
#pragma alloc_text(PAGE, FsFilter1InstanceQueryTeardown)
#pragma alloc_text(PAGE, FsFilter1InstanceSetup)
#pragma alloc_text(PAGE, FsFilter1InstanceTeardownStart)
#pragma alloc_text(PAGE, FsFilter1InstanceTeardownComplete)
#endif


BOOLEAN NPUnicodeStringToChar(PUNICODE_STRING UniName, char Name[])
{
	ANSI_STRING    AnsiName;
	NTSTATUS    ntstatus;
	char*        nameptr;
	__try {
		ntstatus = RtlUnicodeStringToAnsiString(&AnsiName, UniName, TRUE);
		if (AnsiName.Length < 260) {
			nameptr = (PCHAR)AnsiName.Buffer;
			//strcpy(Name, _strupr(nameptr));    //將字符串轉換成大寫形式
			strcpy(Name, _strlwr(nameptr));//講字符串轉換成小寫形式
			//DbgPrint("NPUnicodeStringToChar : %s\n", Name);
		}
		RtlFreeAnsiString(&AnsiName);
	}
	__except (EXCEPTION_EXECUTE_HANDLER) {
		DbgPrint("NPUnicodeStringToChar EXCEPTION_EXECUTE_HANDLER\n");
		return FALSE;
	}
	return TRUE;
}

//獲取進程全路徑
PUNICODE_STRING GetSeLocateProcessImageName(PEPROCESS Process, PUNICODE_STRING *pImageFileName)
{
	POBJECT_NAME_INFORMATION pProcessImageName = NULL;
	PUNICODE_STRING pTempUS = NULL;
	ULONG NameLength = 0;
	//Process->SeAuditProcessCreationInfo.ImageFileName->Name
	//win7 x86 offset = 0x1ec
	//if (NULL == Process->SeAuditProcessCreationInfo.ImageFileName)
	pProcessImageName = (POBJECT_NAME_INFORMATION)(*(ULONG*)((ULONG)Process + 0x1ec));
	if (pProcessImageName == NULL)
	{
		DbgPrint("Process->SeAuditProcessCreationInfo.ImageFileName == NULL \n");
		return NULL;
	}
	else
	{
		NameLength = sizeof(UNICODE_STRING) + pProcessImageName->Name.MaximumLength;
		pTempUS = ExAllocatePoolWithTag(NonPagedPool, NameLength, 'aPeS');
		if (NULL != pTempUS) {

			RtlCopyMemory(
				pTempUS,
				&pProcessImageName->Name,
				NameLength
				);

			pTempUS->Buffer = (PWSTR)(((PUCHAR)pTempUS) + sizeof(UNICODE_STRING));
			*pImageFileName = pTempUS;
			return *pImageFileName;
		}
		return NULL;
	}

}


//
//  operation registration
//
FLT_PREOP_CALLBACK_STATUS NPPreCreate(
	__inout PFLT_CALLBACK_DATA Data,
	__in PCFLT_RELATED_OBJECTS FltObjects,
	__deref_out_opt PVOID *CompletionContext)
{
	char FileName[260] = "X:";//記錄文件名  
	char FilePath[260] = "Y:";//記錄相對路徑（ParentDir）  
	char Ext[260] = "Z:";//記錄擴展名  
	UCHAR	*pProcName = NULL;
	NTSTATUS status;
	UNICODE_STRING uniString;
	PEPROCESS pEprocess = 0;
	PUNICODE_STRING uSProcessPath = NULL;

	PFLT_FILE_NAME_INFORMATION nameInfo;
	UNREFERENCED_PARAMETER(FltObjects);
	UNREFERENCED_PARAMETER(CompletionContext);
	PAGED_CODE();
	__try {
		status = FltGetFileNameInformation(Data, FLT_FILE_NAME_NORMALIZED | FLT_FILE_NAME_QUERY_DEFAULT, &nameInfo);
		if (NT_SUCCESS(status)) {
			//DbgPrint("進入了\r\n");  
			FltParseFileNameInformation(nameInfo);
			if (NPUnicodeStringToChar(&nameInfo->Name, FileName)) {
				if (NPUnicodeStringToChar(&nameInfo->ParentDir, FilePath)){
					//輸出文件名及相對路徑  
					DbgPrint("文件名:%s\r\n", FileName);
					DbgPrint("文件路徑:%s\r\n", FilePath);
					//輸出擴展名
					NPUnicodeStringToChar(&nameInfo->Extension, Ext);
					DbgPrint("文件擴展名:%s\r\n", Ext);
					pEprocess = Data->Thread ? IoThreadToProcess(Data->Thread) : PsGetCurrentProcess();
					//uSProcessPath = PsGetProcessFullName(pEprocess);//這裏需要釋放UNICODESTRING 的內存
					//GetSeLocateProcessImageName(pEprocess, &uSProcessPath);
					pProcName = PsGetProcessImageFileName(pEprocess);
					DbgPrint("ProcFullName : %s\n", pProcName);
					//判斷文件路徑或名字是否符合要求，若是滿足要求則拒絕訪問  
					if (strstr(FileName, "txt") > 0) {
						Data->IoStatus.Status = STATUS_ACCESS_DENIED;
						Data->IoStatus.Information = 0;
						FltReleaseFileNameInformation(nameInfo);
						return STATUS_ACCESS_DENIED;
					}
				}

				FltReleaseFileNameInformation(nameInfo);
			}
		}
	}
	__except (EXCEPTION_EXECUTE_HANDLER) {
		DbgPrint("NPPreCreate EXCEPTION_EXECUTE_HANDLER\n");
	}
	return FLT_PREOP_SUCCESS_WITH_CALLBACK;
}


CONST FLT_OPERATION_REGISTRATION Callbacks[] = {


    { IRP_MJ_CREATE,
      0,
	  NPPreCreate,
      FsFilter1PostOperation },
#if 0 // TODO - List all of the requests to filter.
    { IRP_MJ_CREATE_NAMED_PIPE,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_CLOSE,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_READ,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_WRITE,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_QUERY_INFORMATION,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_SET_INFORMATION,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_QUERY_EA,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_SET_EA,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_FLUSH_BUFFERS,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_QUERY_VOLUME_INFORMATION,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_SET_VOLUME_INFORMATION,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_DIRECTORY_CONTROL,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_FILE_SYSTEM_CONTROL,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_DEVICE_CONTROL,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_INTERNAL_DEVICE_CONTROL,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_SHUTDOWN,
      0,
      FsFilter1PreOperationNoPostOperation,
      NULL },                               //post operations not supported

    { IRP_MJ_LOCK_CONTROL,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_CLEANUP,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_CREATE_MAILSLOT,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_QUERY_SECURITY,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_SET_SECURITY,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_QUERY_QUOTA,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_SET_QUOTA,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_PNP,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_ACQUIRE_FOR_SECTION_SYNCHRONIZATION,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_RELEASE_FOR_SECTION_SYNCHRONIZATION,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_ACQUIRE_FOR_MOD_WRITE,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_RELEASE_FOR_MOD_WRITE,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_ACQUIRE_FOR_CC_FLUSH,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_RELEASE_FOR_CC_FLUSH,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_FAST_IO_CHECK_IF_POSSIBLE,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_NETWORK_QUERY_OPEN,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_MDL_READ,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_MDL_READ_COMPLETE,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_PREPARE_MDL_WRITE,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_MDL_WRITE_COMPLETE,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_VOLUME_MOUNT,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

    { IRP_MJ_VOLUME_DISMOUNT,
      0,
      FsFilter1PreOperation,
      FsFilter1PostOperation },

#endif // TODO

    { IRP_MJ_OPERATION_END }
};

//
//  This defines what we want to filter with FltMgr
//

CONST FLT_REGISTRATION FilterRegistration = {

    sizeof( FLT_REGISTRATION ),         //  Size
    FLT_REGISTRATION_VERSION,           //  Version
    0,                                  //  Flags

    NULL,                               //  Context
    Callbacks,                          //  Operation callbacks

    FsFilter1Unload,                           //  MiniFilterUnload

    FsFilter1InstanceSetup,                    //  InstanceSetup
    FsFilter1InstanceQueryTeardown,            //  InstanceQueryTeardown
    FsFilter1InstanceTeardownStart,            //  InstanceTeardownStart
    FsFilter1InstanceTeardownComplete,         //  InstanceTeardownComplete

    NULL,                               //  GenerateFileName
    NULL,                               //  GenerateDestinationFileName
    NULL                                //  NormalizeNameComponent

};



NTSTATUS
FsFilter1InstanceSetup (
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _In_ FLT_INSTANCE_SETUP_FLAGS Flags,
    _In_ DEVICE_TYPE VolumeDeviceType,
    _In_ FLT_FILESYSTEM_TYPE VolumeFilesystemType
    )
/*++

Routine Description:

    This routine is called whenever a new instance is created on a volume. This
    gives us a chance to decide if we need to attach to this volume or not.

    If this routine is not defined in the registration structure, automatic
    instances are always created.

Arguments:

    FltObjects - Pointer to the FLT_RELATED_OBJECTS data structure containing
        opaque handles to this filter, instance and its associated volume.

    Flags - Flags describing the reason for this attach request.

Return Value:

    STATUS_SUCCESS - attach
    STATUS_FLT_DO_NOT_ATTACH - do not attach

--*/
{
    UNREFERENCED_PARAMETER( FltObjects );
    UNREFERENCED_PARAMETER( Flags );
    UNREFERENCED_PARAMETER( VolumeDeviceType );
    UNREFERENCED_PARAMETER( VolumeFilesystemType );

    PAGED_CODE();

    PT_DBG_PRINT( PTDBG_TRACE_ROUTINES,
                  ("FsFilter1!FsFilter1InstanceSetup: Entered\n") );

    return STATUS_SUCCESS;
}


NTSTATUS
FsFilter1InstanceQueryTeardown (
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _In_ FLT_INSTANCE_QUERY_TEARDOWN_FLAGS Flags
    )
/*++

Routine Description:

    This is called when an instance is being manually deleted by a
    call to FltDetachVolume or FilterDetach thereby giving us a
    chance to fail that detach request.

    If this routine is not defined in the registration structure, explicit
    detach requests via FltDetachVolume or FilterDetach will always be
    failed.

Arguments:

    FltObjects - Pointer to the FLT_RELATED_OBJECTS data structure containing
        opaque handles to this filter, instance and its associated volume.

    Flags - Indicating where this detach request came from.

Return Value:

    Returns the status of this operation.

--*/
{
    UNREFERENCED_PARAMETER( FltObjects );
    UNREFERENCED_PARAMETER( Flags );

    PAGED_CODE();

    PT_DBG_PRINT( PTDBG_TRACE_ROUTINES,
                  ("FsFilter1!FsFilter1InstanceQueryTeardown: Entered\n") );

    return STATUS_SUCCESS;
}


VOID
FsFilter1InstanceTeardownStart (
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _In_ FLT_INSTANCE_TEARDOWN_FLAGS Flags
    )
/*++

Routine Description:

    This routine is called at the start of instance teardown.

Arguments:

    FltObjects - Pointer to the FLT_RELATED_OBJECTS data structure containing
        opaque handles to this filter, instance and its associated volume.

    Flags - Reason why this instance is being deleted.

Return Value:

    None.

--*/
{
    UNREFERENCED_PARAMETER( FltObjects );
    UNREFERENCED_PARAMETER( Flags );

    PAGED_CODE();

    PT_DBG_PRINT( PTDBG_TRACE_ROUTINES,
                  ("FsFilter1!FsFilter1InstanceTeardownStart: Entered\n") );
}


VOID
FsFilter1InstanceTeardownComplete (
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _In_ FLT_INSTANCE_TEARDOWN_FLAGS Flags
    )
/*++

Routine Description:

    This routine is called at the end of instance teardown.

Arguments:

    FltObjects - Pointer to the FLT_RELATED_OBJECTS data structure containing
        opaque handles to this filter, instance and its associated volume.

    Flags - Reason why this instance is being deleted.

Return Value:

    None.

--*/
{
    UNREFERENCED_PARAMETER( FltObjects );
    UNREFERENCED_PARAMETER( Flags );

    PAGED_CODE();

    PT_DBG_PRINT( PTDBG_TRACE_ROUTINES,
                  ("FsFilter1!FsFilter1InstanceTeardownComplete: Entered\n") );
}


/*************************************************************************
    MiniFilter initialization and unload routines.
*************************************************************************/

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

    UNREFERENCED_PARAMETER( RegistryPath );

    PT_DBG_PRINT( PTDBG_TRACE_ROUTINES,
                  ("FsFilter1!DriverEntry: Entered\n") );

    //
    //  Register with FltMgr to tell it our callback routines
    //

    status = FltRegisterFilter( DriverObject,
                                &FilterRegistration,
                                &gFilterHandle );

    FLT_ASSERT( NT_SUCCESS( status ) );

    if (NT_SUCCESS( status )) {

        status = FltStartFiltering( gFilterHandle );

        if (!NT_SUCCESS( status )) {

            FltUnregisterFilter( gFilterHandle );
        }
    }

    return status;
}

NTSTATUS
FsFilter1Unload (_In_ FLT_FILTER_UNLOAD_FLAGS Flags)
{
    UNREFERENCED_PARAMETER( Flags );
    PAGED_CODE();
    PT_DBG_PRINT( PTDBG_TRACE_ROUTINES,
                  ("FsFilter1!FsFilter1Unload: Entered\n") );
    FltUnregisterFilter( gFilterHandle );
    return STATUS_SUCCESS;
}


/*************************************************************************
    MiniFilter callback routines.
*************************************************************************/
FLT_PREOP_CALLBACK_STATUS
FsFilter1PreOperation (
    _Inout_ PFLT_CALLBACK_DATA Data,
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _Flt_CompletionContext_Outptr_ PVOID *CompletionContext
    )
/*++

Routine Description:

    This routine is a pre-operation dispatch routine for this miniFilter.

    This is non-pageable because it could be called on the paging path

Arguments:

    Data - Pointer to the filter callbackData that is passed to us.

    FltObjects - Pointer to the FLT_RELATED_OBJECTS data structure containing
        opaque handles to this filter, instance, its associated volume and
        file object.

    CompletionContext - The context for the completion routine for this
        operation.

Return Value:

    The return value is the status of the operation.

--*/
{
    NTSTATUS status;

    UNREFERENCED_PARAMETER( FltObjects );
    UNREFERENCED_PARAMETER( CompletionContext );

    PT_DBG_PRINT( PTDBG_TRACE_ROUTINES,
                  ("FsFilter1!FsFilter1PreOperation: Entered\n") );

    //
    //  See if this is an operation we would like the operation status
    //  for.  If so request it.
    //
    //  NOTE: most filters do NOT need to do this.  You only need to make
    //        this call if, for example, you need to know if the oplock was
    //        actually granted.
    //

    if (FsFilter1DoRequestOperationStatus( Data )) {

        status = FltRequestOperationStatusCallback( Data,
                                                    FsFilter1OperationStatusCallback,
                                                    (PVOID)(++OperationStatusCtx) );
        if (!NT_SUCCESS(status)) {

            PT_DBG_PRINT( PTDBG_TRACE_OPERATION_STATUS,
                          ("FsFilter1!FsFilter1PreOperation: FltRequestOperationStatusCallback Failed, status=%08x\n",
                           status) );
        }
    }

    // This template code does not do anything with the callbackData, but
    // rather returns FLT_PREOP_SUCCESS_WITH_CALLBACK.
    // This passes the request down to the next miniFilter in the chain.

    return FLT_PREOP_SUCCESS_WITH_CALLBACK;
}



VOID
FsFilter1OperationStatusCallback (
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _In_ PFLT_IO_PARAMETER_BLOCK ParameterSnapshot,
    _In_ NTSTATUS OperationStatus,
    _In_ PVOID RequesterContext
    )
/*++

Routine Description:

    This routine is called when the given operation returns from the call
    to IoCallDriver.  This is useful for operations where STATUS_PENDING
    means the operation was successfully queued.  This is useful for OpLocks
    and directory change notification operations.

    This callback is called in the context of the originating thread and will
    never be called at DPC level.  The file object has been correctly
    referenced so that you can access it.  It will be automatically
    dereferenced upon return.

    This is non-pageable because it could be called on the paging path

Arguments:

    FltObjects - Pointer to the FLT_RELATED_OBJECTS data structure containing
        opaque handles to this filter, instance, its associated volume and
        file object.

    RequesterContext - The context for the completion routine for this
        operation.

    OperationStatus -

Return Value:

    The return value is the status of the operation.

--*/
{
    UNREFERENCED_PARAMETER( FltObjects );

    PT_DBG_PRINT( PTDBG_TRACE_ROUTINES,
                  ("FsFilter1!FsFilter1OperationStatusCallback: Entered\n") );

    PT_DBG_PRINT( PTDBG_TRACE_OPERATION_STATUS,
                  ("FsFilter1!FsFilter1OperationStatusCallback: Status=%08x ctx=%p IrpMj=%02x.%02x \"%s\"\n",
                   OperationStatus,
                   RequesterContext,
                   ParameterSnapshot->MajorFunction,
                   ParameterSnapshot->MinorFunction,
                   FltGetIrpName(ParameterSnapshot->MajorFunction)) );
}


FLT_POSTOP_CALLBACK_STATUS
FsFilter1PostOperation (
    _Inout_ PFLT_CALLBACK_DATA Data,
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _In_opt_ PVOID CompletionContext,
    _In_ FLT_POST_OPERATION_FLAGS Flags
    )
/*++

Routine Description:

    This routine is the post-operation completion routine for this
    miniFilter.

    This is non-pageable because it may be called at DPC level.

Arguments:

    Data - Pointer to the filter callbackData that is passed to us.

    FltObjects - Pointer to the FLT_RELATED_OBJECTS data structure containing
        opaque handles to this filter, instance, its associated volume and
        file object.

    CompletionContext - The completion context set in the pre-operation routine.

    Flags - Denotes whether the completion is successful or is being drained.

Return Value:

    The return value is the status of the operation.

--*/
{
    UNREFERENCED_PARAMETER( Data );
    UNREFERENCED_PARAMETER( FltObjects );
    UNREFERENCED_PARAMETER( CompletionContext );
    UNREFERENCED_PARAMETER( Flags );

    PT_DBG_PRINT( PTDBG_TRACE_ROUTINES,
                  ("FsFilter1!FsFilter1PostOperation: Entered\n") );

    return FLT_POSTOP_FINISHED_PROCESSING;
}


FLT_PREOP_CALLBACK_STATUS
FsFilter1PreOperationNoPostOperation (
    _Inout_ PFLT_CALLBACK_DATA Data,
    _In_ PCFLT_RELATED_OBJECTS FltObjects,
    _Flt_CompletionContext_Outptr_ PVOID *CompletionContext
    )
/*++

Routine Description:

    This routine is a pre-operation dispatch routine for this miniFilter.

    This is non-pageable because it could be called on the paging path

Arguments:

    Data - Pointer to the filter callbackData that is passed to us.

    FltObjects - Pointer to the FLT_RELATED_OBJECTS data structure containing
        opaque handles to this filter, instance, its associated volume and
        file object.

    CompletionContext - The context for the completion routine for this
        operation.

Return Value:

    The return value is the status of the operation.

--*/
{
    UNREFERENCED_PARAMETER( Data );
    UNREFERENCED_PARAMETER( FltObjects );
    UNREFERENCED_PARAMETER( CompletionContext );

    PT_DBG_PRINT( PTDBG_TRACE_ROUTINES,
                  ("FsFilter1!FsFilter1PreOperationNoPostOperation: Entered\n") );

    // This template code does not do anything with the callbackData, but
    // rather returns FLT_PREOP_SUCCESS_NO_CALLBACK.
    // This passes the request down to the next miniFilter in the chain.

    return FLT_PREOP_SUCCESS_NO_CALLBACK;
}


BOOLEAN
FsFilter1DoRequestOperationStatus(
    _In_ PFLT_CALLBACK_DATA Data
    )
/*++

Routine Description:

    This identifies those operations we want the operation status for.  These
    are typically operations that return STATUS_PENDING as a normal completion
    status.

Arguments:

Return Value:

    TRUE - If we want the operation status
    FALSE - If we don't

--*/
{
    PFLT_IO_PARAMETER_BLOCK iopb = Data->Iopb;

    //
    //  return boolean state based on which operations we are interested in
    //

    return (BOOLEAN)

            //
            //  Check for oplock operations
            //

             (((iopb->MajorFunction == IRP_MJ_FILE_SYSTEM_CONTROL) &&
               ((iopb->Parameters.FileSystemControl.Common.FsControlCode == FSCTL_REQUEST_FILTER_OPLOCK)  ||
                (iopb->Parameters.FileSystemControl.Common.FsControlCode == FSCTL_REQUEST_BATCH_OPLOCK)   ||
                (iopb->Parameters.FileSystemControl.Common.FsControlCode == FSCTL_REQUEST_OPLOCK_LEVEL_1) ||
                (iopb->Parameters.FileSystemControl.Common.FsControlCode == FSCTL_REQUEST_OPLOCK_LEVEL_2)))

              ||

              //
              //    Check for directy change notification
              //

              ((iopb->MajorFunction == IRP_MJ_DIRECTORY_CONTROL) &&
               (iopb->MinorFunction == IRP_MN_NOTIFY_CHANGE_DIRECTORY))
             );
}

將Instance1.Altitude = "370030"的註釋去掉

安裝：

右鍵FsFilter1.inf文件，點擊安裝xp下驅動不簽名可以安裝
win7以上用測試模式，或者僞造簽名來安裝驅動
啓動驅動：管理員啓動cmd, sc start FsFilter1(換成你自己驅動的名字)