|FILE_ID_BOTH_DIR_INFORMATION| fields |ShortName|+|ShortNameLength| mandatory for Cygwin and Window 10 ?

[Roland Mainz]

Hi!

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Are the |FILE_ID_BOTH_DIR_INFORMATION| fields
|ShortName|+|ShortNameLength| mandatory these days, e.g. is it legal
to set |ShortNameLength = 0;| for Cygwin 3.4/3.5 in Windows 10 ?

Is there anything else for a filesystem driver to do to indicate that
|ShortName| support is not available ?

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Bye,
Roland
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