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Date:	Mon, 9 Mar 2015 10:10:29 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: [ANNOUNCEMENT] Updated: Cygwin 1.7.35-1
Message-ID:	<20150309091029.GA28200@calimero.vinschen.de>
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On Mar  6 12:51, Achim Gratz wrote:
> Corinna Vinschen <corinna-cygwin <at> cygwin.com> writes:
> > - Change handling of group permissions if owner SID =3D=3D group SID.  =
Now the
> >   group permissions don't mirror the user permissions anymore, thus lea=
ding
> >   to less hassle with security-conscious applications.
>=20
> There's another tricky situation that is not yet handled:
>=20
> If the file is owned by myself and I'm in a group that allows full access
> (but not ACL modifications), Cygwin will show that file as having mode
> "---rwx---+".  Applications that follow POSIX semantics will interpret th=
at
> file as unreadable by the owner (=3D=3Dcurrent user) and skip checking th=
e group
> permissions, while NTFS will still happily grant that access.  So in that
> situation the group permissions need to be promoted to the owner permissi=
ons.

The problem is this.  How long do you want `ls -l' take?  Checking
permissions is awkward and lengthy on Windows, unless you have the
user's token.  The access check can be improved and the permissions
more correctly shown for the current user, but for any file and any
user account, it'd be a lot of time-consuming effort.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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