我在PreSetInformationFile中修改参数

RtlInitUnicodeString(&ustrTmp, L"\\??\\c:\\abc\\abc\\acccc.txt");
pFileRenameInformation = ExAllocatePoolWithTag(NonPagedPool, sizeof(FILE_RENAME_INFORMATION) + ustrTmp.Length, MEM_TAG);

pFileRenameInformation->RootDirectory = pFileRenameInformationOld->RootDirectory;

pFileRenameInformation->ReplaceIfExists = pFileRenameInformationOld->ReplaceIfExists;

pFileRenameInformation->FileNameLength = ustrTmp.Length;

RtlCopyBytes(pFileRenameInformation->FileName,  ustrTmp.Buffer, ustrTmp.Length);

Data->Iopb->Parameters.SetFileInformation.Length = sizeof(FILE_RENAME_INFORMATION) + ustrTmp.Length;

Data->Iopb->Parameters.SetFileInformation.InfoBuffer = pFileRenameInformation;

FltSetCallbackDataDirty(Data);

Data->IoStatus.Information = 0;

Data->IoStatus.Status = STATUS_REPARSE;

return FLT_PREOP_SUCCESS_WITH_CALLBACK;

可是在PostSetInformationFile 中
Data->Iopb->Parameters.SetFileInformation.InfoBuffer还是原来的地址 根本没修改成功啊   为什么啊   求内核大人指教~~~

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