When I go to FltWriteFile during Pre or Post in Minifilter, it will cause me to continuously enter the SetFileImformation callback routine

NTFSD
1

Hello,All!
be like Title,why this?thanks!

 case FileEndOfFileInformation:
        {
            PFILE_END_OF_FILE_INFORMATION pFileEndInfo = Data->Iopb->Parameters.SetFileInformation.InfoBuffer;

            WriteCiphertextToFile(FltObjects, pFileStreamContex->uVolumeSectorSize, pFileEndInfo->EndOfFile.QuadPart, pFileEndInfo->EndOfFile.QuadPart, pFileStreamContex->pwchFileName);


            //pFileEndInfo->EndOfFile.QuadPart = pFileEndInfo->EndOfFile.QuadPart + uFileSecInfoSize;

            //FltSetCallbackDataDirty(Data);

            break;
        }
2

It is reasonably likely that the code is not passing the correct filter instance to FltWriteFile. Or maybe it is not using FltWriteFile?

Hard to tell with the code provided.

3

thanks! Alnoor.I had changed a way to solve the problem

4

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