Date: Mon, 12 Jan 2009 22:50:01 +0100
From: Andi Kleen <andi@firstfloor.org>
To: =?iso-8859-1?Q?R=E9mi?= Denis-Courmont <rdenis@simphalempin.com>
Cc: Andi Kleen <andi@firstfloor.org>, Valdis.Kletnieks@vt.edu,
       Alan Cox <alan@lxorguk.ukuu.org.uk>, Michael Stone <michael@laptop.org>,
       linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: RFC: Network privilege separation.
Message-ID: <20090112215001.GG23848@one.firstfloor.org>
References: <1231307334-9542-1-git-send-email-michael@laptop.org> <200901122230.25976.rdenis@simphalempin.com> <20090112205547.GE23848@one.firstfloor.org> <200901122247.22059.rdenis@simphalempin.com>
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On Mon, Jan 12, 2009 at 10:47:21PM +0200, R?mi Denis-Courmont wrote:
> Le lundi 12 janvier 2009 22:55:47 Andi Kleen, vous avez ?crit?:
> > Fair point, although I'm afraid you didn't do a very good
> > job explaining your reasons, so it sounds like a
> > quite arbitary decision.
> 
> Fair enough. It's just way too much interface/adaptation work compared to the 
> benefit. Especially considering that it would be much easier, and almost as 
> secure, with a "relaxed" SECCOMP. 

What system calls would you want in a relaxed SECCOMP?

> And on top of that, it's causing 
> unnecessary overhead (we're also interested in those small Linux-based 

Would be interesting to try that out -- just adding two memcpyies to 
the existing code and see how much slower it gets. My guess
would be not very, even e.g. on a Atom system (which are really
not all that slow).

Presumably you could always #ifdef it if it's really a problem
on some specific system. That would be needed anyways for 
non linux systems.

-And

-- 
ak@linux.intel.com -- Speaking for myself only.
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