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Re: Easy configuration of a site-lisp directory

From: Eli Zaretskii
Subject: Re: Easy configuration of a site-lisp directory
Date: Sat, 21 Aug 2021 22:18:28 +0300

> From: Arthur Miller <arthur.miller@live.com>
> Cc: monnier@iro.umontreal.ca,  philipk@posteo.net,  emacs-devel@gnu.org
> Date: Sat, 21 Aug 2021 21:10:22 +0200
> > If the symlink resolution is done below the level where access rights
> > are checked, you cannot do that.
> Which means we can leak access rights if we symlink from priviledged
> ring into lesser access right ring, or how they call it?

Something like that, yes.  I think the problem is actually in knowing
which inheritable access right to apply, because a symlink can point
to a completely different directory hierarchy.

> > Symlinks are not removed from Windows, they are present (and Emacs on
> > Windows supports them).
> Oh sorry for the last, my brain was on the vacation, "removed" I meant
> from original design ... back in VMS/VAX time I was still in thoughts of
> another replay. As I understand they added symlinks "relatively"
> recently (in Vista), but I maybe missunderstood there.

Yes, NTFS support for symlinks is around Vista, although filesystem
reparse points were supported before that.

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