From: majkls <majkls@prepere.com>
To: Philipp Marek <philipp@marek.priv.at>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
linux-kernel@vger.kernel.org, david@davidnewall.com,
davidsen@tmr.com, bunk@fs.tum.de
Subject: Re: sys_chroot+sys_fchdir Fix
Date: Thu, 20 Sep 2007 14:52:41 +0200 [thread overview]
Message-ID: <46F26D19.3010605@prepere.com> (raw)
In-Reply-To: <56705.193.171.152.61.1190289559.squirrel@webmail.marek.priv.at>
Philipp Marek napsal(a):
> 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.
>
>
So I thing this is an example how chroot would not be really used. For
DSO loading there is many better ways to load own DSO. Though is this
feature described in chroot() manpage, I have not noticed that any
serious project uses it. But ok, this is a ferature of chroot(). Also
FreeBSD does not support escaping chroot AFAIK. So this feature is very
badly portable.
Miloslav
next prev parent reply other threads:[~2007-09-20 12:53 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <952DN-83o-31@gated-at.bofh.it>
[not found] ` <954cl-29C-3@gated-at.bofh.it>
[not found] ` <95ctn-74b-15@gated-at.bofh.it>
[not found] ` <95cMH-7um-19@gated-at.bofh.it>
[not found] ` <95gdA-4OZ-7@gated-at.bofh.it>
2007-09-20 11:13 ` sys_chroot+sys_fchdir Fix Bodo Eggert
2007-09-20 11:59 ` Philipp Marek
2007-09-20 12:52 ` majkls [this message]
2007-09-20 16:06 ` David Newall
2007-09-20 16:17 ` Philipp Marek
2007-09-20 18:02 ` David Newall
2007-09-20 20:53 ` Bill Davidsen
2007-09-21 8:29 ` David Newall
2007-09-24 21:32 ` Serge E. Hallyn
2007-09-24 22:04 ` David Newall
2007-09-24 23:00 ` Serge E. Hallyn
2007-09-25 7:45 ` David Newall
2007-09-25 11:49 ` Serge E. Hallyn
2007-09-25 13:58 ` David Newall
2007-09-25 15:10 ` Chroot bug (was: sys_chroot+sys_fchdir Fix) David Newall
2007-09-25 15:20 ` Jan Engelhardt
2007-09-25 15:39 ` Chroot bug Miloslav Semler
2007-09-25 15:41 ` David Newall
2007-09-25 15:48 ` Jan Engelhardt
2007-09-25 16:19 ` Miloslav Semler
2007-09-25 16:52 ` Jan Engelhardt
2007-09-25 17:00 ` Miloslav Semler
2007-09-25 17:05 ` Jan Engelhardt
2007-09-25 17:09 ` Miloslav Semler
2007-09-25 17:09 ` Al Viro
2007-09-25 17:19 ` Miloslav Semler
2007-09-25 16:53 ` Serge E. Hallyn
2007-09-25 20:51 ` David Newall
2007-09-25 15:30 ` Chroot bug (was: sys_chroot+sys_fchdir Fix) Alan Cox
2007-09-25 15:35 ` Chroot bug David Newall
2007-09-25 15:48 ` Alan Cox
2007-09-25 15:47 ` Jan Engelhardt
2007-09-25 23:50 ` David Newall
2007-09-26 0:18 ` Alan Cox
2007-09-26 10:24 ` David Newall
2007-09-26 10:47 ` Alan Cox
2007-09-26 11:06 ` David Newall
2007-09-26 11:20 ` Alan Cox
[not found] ` <46FA41B4.9040104@prepere.com>
[not found] ` <20070926123522.54ffd56f@the-village.bc.nu>
2007-09-26 11:34 ` Miloslav Semler
2007-09-26 14:09 ` Alan Cox
2007-09-26 13:13 ` Bongani Hlope
2007-09-26 0:55 ` Adrian Bunk
2007-09-26 5:21 ` Kyle Moffett
2007-09-26 5:25 ` Willy Tarreau
2007-09-26 10:27 ` David Newall
2007-09-26 10:45 ` Olivier Galibert
2007-09-26 11:13 ` David Newall
2007-09-26 13:18 ` linux-os (Dick Johnson)
2007-09-26 15:02 ` Olivier Galibert
2007-09-26 12:54 ` Kyle Moffett
2007-09-26 13:11 ` Miloslav Semler
2007-09-26 13:42 ` Al Viro
2007-09-26 14:51 ` Miloslav Semler
2007-09-26 14:02 ` Kyle Moffett
2007-09-26 15:01 ` Miloslav Semler
2007-09-27 13:49 ` Jiri Kosina
2007-09-25 16:33 ` Arjan van de Ven
2007-09-25 15:32 ` Chroot bug (was: sys_chroot+sys_fchdir Fix) Adrian Bunk
2007-09-25 15:43 ` Chroot bug Miloslav Semler
2007-09-25 16:02 ` Adrian Bunk
2007-09-26 19:23 ` Chroot bug (was: sys_chroot+sys_fchdir Fix) Bodo Eggert
2007-09-24 23:02 ` sys_chroot+sys_fchdir Fix Serge E. Hallyn
[not found] ` <95UE2-1oR-19@gated-at.bofh.it>
[not found] ` <95V72-2ly-17@gated-at.bofh.it>
[not found] ` <97pG8-3B5-47@gated-at.bofh.it>
[not found] ` <97sX2-p1-3@gated-at.bofh.it>
2007-09-26 9:38 ` Nick Craig-Wood
2007-09-19 7:19 majkls
2007-09-19 9:40 ` Alan Cox
2007-09-19 18:27 ` Bill Davidsen
2007-09-19 18:45 ` Alan Cox
2007-09-19 22:24 ` David Newall
2007-09-21 17:39 ` Phillip Susi
2007-09-21 18:10 ` Alan Cox
2007-09-25 20:53 ` Phillip Susi
2007-09-26 0:23 ` Al Viro
2007-09-26 10:34 ` David Newall
2007-09-26 11:21 ` Alan Cox
2007-09-26 11:22 ` David Newall
2007-09-26 11:38 ` Alan Cox
2007-09-26 11:56 ` David Newall
2007-09-26 14:10 ` Alan Cox
2007-09-26 15:03 ` Chris Adams
2007-09-26 16:54 ` David Newall
2007-09-26 17:04 ` Alan Cox
2007-09-26 17:18 ` David Newall
2007-09-26 17:29 ` Alan Cox
2007-09-26 17:28 ` David Newall
2007-09-26 18:40 ` Al Viro
2007-09-26 19:24 ` Christer Weinigel
2007-09-26 21:19 ` David Newall
2007-09-26 21:55 ` Adrian Bunk
2007-09-26 23:35 ` David Newall
2007-09-27 0:01 ` Adrian Bunk
2007-09-27 3:59 ` Al Viro
2007-09-27 6:42 ` David Newall
2007-09-27 6:53 ` Adrian Bunk
2007-09-27 7:28 ` Christer Weinigel
2007-09-27 11:23 ` Theodore Tso
2007-09-27 14:36 ` Bill Davidsen
2007-09-28 1:06 ` David Newall
[not found] <fa.1U6+49SWHSlhuK5/3PBckFWAbXU@ifi.uio.no>
[not found] ` <fa.WASh5K8oOF4DAq3sSYtIlWNCdWQ@ifi.uio.no>
[not found] ` <fa.X6MeYG+PmN8/e5zfGij80quLaws@ifi.uio.no>
[not found] ` <fa./eIdqiAY0Mx9xHl6ESobHaLKJBM@ifi.uio.no>
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=46F26D19.3010605@prepere.com \
--to=majkls@prepere.com \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=bunk@fs.tum.de \
--cc=david@davidnewall.com \
--cc=davidsen@tmr.com \
--cc=linux-kernel@vger.kernel.org \
--cc=philipp@marek.priv.at \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox