From: kaih@khms.westfalen.de (Kai Henningsen)
To: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] User chroot
Date: 28 Jun 2001 08:54:00 +0200 [thread overview]
Message-ID: <83hAoTWHw-B@khms.westfalen.de> (raw)
In-Reply-To: <9hd7pl$86f$1@cesium.transmeta.com>
In-Reply-To: <9hd7pl$86f$1@cesium.transmeta.com>
hpa@zytor.com (H. Peter Anvin) wrote on 27.06.01 in <9hd7pl$86f$1@cesium.transmeta.com>:
> By author: kaih@khms.westfalen.de (Kai Henningsen)
> > jc@lysator.liu.se (Jorgen Cederlof) wrote on 27.06.01 in
> > <20010627014534.B2654@ondska>:
> >
> > > If we only allow user chroots for processes that have never been
> > > chrooted before, and if the suid/sgid bits won't have any effect under
> > > the new root, it should be perfectly safe to allow any user to chroot.
> >
> > Hmm. Dos this work with initrd and root pivoting?
> >
>
> At the moment, yes. Once Viro gets his root-changes in, this breaks,
> since ALL processes will be chrooted.
About what I expected. So you'd really want this flag to be resettable by
root, if you go that way at all. Beginning to look a little too compley, I
think.
The last time, ISTR we discussed some other, similar-but-different
syscalls that made for more secure jails. I don't quite remember the
details, though.
MfG Kai
next prev parent reply other threads:[~2001-06-28 7:13 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-26 23:45 [PATCH] User chroot Jorgen Cederlof
2001-06-26 23:46 ` H. Peter Anvin
2001-06-27 0:48 ` David Wagner
2001-06-27 12:56 ` Marco Colombo
2001-06-27 13:56 ` Admin Mailing Lists
2001-06-27 3:32 ` Albert D. Cahalan
2001-06-27 4:24 ` H. Peter Anvin
2001-06-27 6:31 ` Kai Henningsen
2001-06-27 20:55 ` Albert D. Cahalan
2001-06-27 21:03 ` H. Peter Anvin
2001-06-27 21:19 ` Albert D. Cahalan
2001-06-28 7:47 ` Sean Hunter
2001-06-28 18:25 ` Albert D. Cahalan
2001-06-27 15:39 ` Marcus Sundberg
2001-06-27 17:55 ` Jorgen Cederlof
2001-06-27 6:37 ` Kai Henningsen
2001-06-27 18:14 ` H. Peter Anvin
2001-06-28 6:54 ` Kai Henningsen [this message]
2001-06-29 13:46 ` Jorgen Cederlof
[not found] <0C01A29FBAE24448A792F5C68F5EA47D1205FB@nasdaq.ms.ensim.com>
2001-06-27 0:37 ` Paul Menage
2001-06-27 0:45 ` H. Peter Anvin
2001-06-27 0:53 ` David Wagner
2001-06-27 0:51 ` David Wagner
2001-06-27 1:08 ` Mohammad A. Haque
2001-06-27 1:24 ` Paul Menage
2001-06-27 1:40 ` Alexander Viro
2001-06-27 2:17 ` Paul Menage
2001-06-27 6:35 ` Kai Henningsen
2001-06-27 7:19 ` Chris Wedgwood
2001-06-27 7:43 ` Alexander Viro
2001-06-27 4:39 ` David Wagner
-- strict thread matches above, loose matches on Subject: below --
2001-06-27 13:57 Jesse Pollard
2001-06-27 17:42 ` David Wagner
2001-06-27 23:11 Andries.Brouwer
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