linux-kernel - Re: [PATCH] Undo some of the pseudo-security madness

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Date:	Mon, 22 Jan 2007 20:39:21 +0300
From:	Samium Gromoff <_deepfire@...lingofgreen.ru>
To:	Valdis.Kletnieks@...edu
Cc:	Samium Gromoff <_deepfire@...lingofgreen.ru>,
	David Wagner <daw@...berkeley.edu>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Undo some of the pseudo-security madness

At Mon, 22 Jan 2007 10:20:21 -0500,
Valdis.Kletnieks@...edu wrote:
> On Mon, 22 Jan 2007 02:23:30 +0300, Samium Gromoff said:
> >
> > not "core-dumps" but "core files", in the lispspeak, but anyway.
> > 
> > the reason is trivial -- if i can write programs enjoying setuid
> > privileges in C, i want to be able to do the same in Lisp.
> 
> Go read up on how the XEmacs crew designed their "portable dumper",
> specifically to get around a lot of these sorts of problems because the
> old Emacs 'unexec' code was incredibly fragile.

I should take the freedom to respond in your manner :-)

Are you saying that the usefulness of AS randomisation is
overall exceeding that of MAP_FIXED, and the latter should be
abolished?

Did we silently enter an era where support for buggy software
is more important than a basic mmap feature?

> > the only way to achieve this i see, is to directly setuid root
> > the lisp system executable itself -- because the lisp code
> > is read, compiled and executed in the process of the lisp
> > system executable.
> 
> If that's the only way you can see to do it, maybe you should think a
> bit harder before making kernel hacks to do something.

I want equal grounds for platforms, that`s all.

regards, Samium Gromoff
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