[Bug 47630] NTFS Reparse Points are treated as n*x APR_LNK, only correct for junction/dir link

[bu...@apache.org]

https://bz.apache.org/bugzilla/show_bug.cgi?id=47630

William A. Rowe Jr. <wr...@apache.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #21 from William A. Rowe Jr. <wr...@apache.org> ---
Researching further, using DeviceIoControl() requires us to have a 16k buffer,
per https://docs.microsoft.com/en-us/windows/desktop/fileio/reparse-points
and would require the handle first with CreateFile() and CloseHandle().
https://msdn.microsoft.com/en-us/library/windows/desktop/aa364571(v=vs.85).aspx
This suggests such an "optimization" would not be an improvement over the
proposed code. 

Although I don't believe it is necessary to have a fail-over, because of the
fact that lstat has no meaning on an already open file (because it has already
been resolved to the symlink/junction target), I've accepted as submitted for
1.7 and 2.0, and optimization/unneded cases can be dropped later for 2.0.

Committed in r1855949, backported to 1.7 in r1855950

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