linux-kernel - Re: sys_chroot+sys

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Message-Id: <200709201817.17282@x5>
Date:	Thu, 20 Sep 2007 18:17:16 +0200
From:	Philipp Marek <philipp@...ek.priv.at>
To:	David Newall <david@...idnewall.com>
Cc:	7eggert@....de, Alan Cox <alan@...rguk.ukuu.org.uk>,
	Bill Davidsen <davidsen@....com>, majkls <majkls@...pere.com>,
	bunk@...tum.de, linux-kernel@...r.kernel.org
Subject: Re: sys_chroot+sys_fchdir Fix

On Thursday 20 September 2007 David Newall wrote:
> Philipp Marek wrote:
> > - User starts a small wrapper,
> > - that opens "/",
> > - chroot()s into a directory and starts fsvs.
> > - fsvs gets its libraries loaded
> > - and chroot()s back to the original system.
>
> Isn't that what pivot_root was meant for?
AFAIK pivot_root() changes the / mapping for *all* processes, no?

I just wanted to give *this* single process completely new library paths, even 
for delay-loaded things (like libnss) ...


Regards,

Phil


-- 
Versioning your /etc, /home or even your whole installation?
             Try fsvs (fsvs.tigris.org)!
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