[Bug 47833] FindFirstFileExW seems to be missing FILE_OPEN_FOR_BACKUP_INTENT flag to NtOpenFile

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=47833

Zebediah Figura <z.figura12 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|unspecified                 |4.17

--- Comment #3 from Zebediah Figura <z.figura12 at gmail.com> ---
Sounds reasonable to me, though I'm inclined to say that regardless of testing
it may be upstreamable directly. While I don't think it's [legally] safe to
test what values Windows passes to NtOpenFile(), it's probably reasonable for
us to alter behaviour in such a way if it's shown to improve programs.

Moreover, MSDN says that FILE_FLAG_BACKUP_SEMANTICS must be used to open a
directory handle [1]. So it may be worth testing whether a similar restriction
applies to NtOpenFile(), and, if so, it'd be even easier to justify adding that
flag.

[1]
https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-createfilea

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