linux-kernel - Re: sys_chroot+sys

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Message-ID: <56705.193.171.152.61.1190289559.squirrel@webmail.marek.priv.at>
Date:	Thu, 20 Sep 2007 13:59:19 +0200 (CEST)
From:	"Philipp Marek" <philipp@...ek.priv.at>
To:	7eggert@....de
Cc:	"David Newall" <david@...idnewall.com>,
	"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

Please, everybody,

don't change that.

I'm currently using that *feature* (yes, I see it as that) in my
fsvs-chrooter-utility (see
http://fsvs.tigris.org/source/browse/*checkout*/fsvs/trunk/www/doxygen/html/group__howto__chroot.html)
for easier usage of fsvs on older systems.

- 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.

Voila! fsvs can use the newest available libraries for that architecture,
without having to change the installed system.

Please, keep that feature - as already mentioned, UID 0 is required
anyway, and such processes can get out of (nearly) anything.

Regards,

Phil

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