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sys: FspFsvolSetDispositionInformation: ignore FILE_DISPOSITION_FORCE_IMAGE_SECTION_CHECK flag

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This commit is contained in:
Bill Zissimopoulos
2021-11-19 17:16:36 +00:00
parent e09042c028
commit d72fe2ee33
3 changed files with 43 additions and 8 deletions
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26
src/sys/fileinfo.c
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@ -1513,15 +1513,25 @@ retry:
if (!NT_SUCCESS(Result))
goto unlock_exit;
if (FlagOn(DispositionFlags, FILE_DISPOSITION_FORCE_IMAGE_SECTION_CHECK))
/*
* Make sure no process is mapping the file as an image.
*
* NOTE:
* Turns out that NTFS always does this test, even when
* FILE_DISPOSITION_FORCE_IMAGE_SECTION_CHECK has been specified.
* If MmFlushImageSection fails (e.g. an actively running EXE) then
* it only allows the deletion to go through when a secondary hard
* link is being deleted.
*
* Since WinFsp does not support hard links, we will go ahead and
* ignore the FILE_DISPOSITION_FORCE_IMAGE_SECTION_CHECK flag and
* always respect the result of MmFlushImageSection.
*/
Success = MmFlushImageSection(FileObject->SectionObjectPointer, MmFlushForDelete);
if (!Success)
{
/* make sure no process is mapping the file as an image */
Success = MmFlushImageSection(FileObject->SectionObjectPointer, MmFlushForDelete);
if (!Success)
{
Result = STATUS_CANNOT_DELETE;
goto unlock_exit;
}
Result = STATUS_CANNOT_DELETE;
goto unlock_exit;
}
if (FlagOn(DispositionFlags, FILE_DISPOSITION_IGNORE_READONLY_ATTRIBUTE))