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Reply-To: moss AT cs DOT umass DOT edu
Subject: Re: Files created with CYGWIN have "NULL SID:(DENY)" windows ACL, inter alia
To: cygwin AT cygwin DOT com
References: <CAJiKf6Ht6DA4hyVHWCocFwC5CNvkWNTMPZvitGdF-YyTgVYYfA AT mail DOT gmail DOT com>
From: Eliot Moss <moss AT cs DOT umass DOT edu>
Message-ID: <7805a122-e4d4-8fca-fdea-08c00b3fb487@cs.umass.edu>
Date: Sat, 21 Dec 2019 13:23:01 -0500
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Yes, if you read the part in the user's guide about ACLs it explains that.
As I recall, it's a place to hang information that is otherwise hard to
represent in Windows, because of the differences between how the Windows
and Posix permissions systems work.  You'll also find that the ACLs are
not in the order that Windows likes.  Don't let Windows reorder them, or
you will break what Cygwin is trying to accomplish!  Even though the
order is not standard, the ACLs work ...

Eliot Moss

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