From: Theodore Tso <tytso@mit.edu>
To: Christer Weinigel <christer@weinigel.se>
Cc: David Newall <david@davidnewall.com>,
Al Viro <viro@ftp.linux.org.uk>, Phillip Susi <psusi@cfl.rr.com>,
Bill Davidsen <davidsen@tmr.com>, majkls <majkls@prepere.com>,
bunk@fs.tum.de, linux-kernel@vger.kernel.org
Subject: Re: sys_chroot+sys_fchdir Fix
Date: Thu, 27 Sep 2007 07:23:16 -0400 [thread overview]
Message-ID: <20070927112316.GC18346@thunk.org> (raw)
In-Reply-To: <20070927092808.612c204b@localhost.localdomain>
On Thu, Sep 27, 2007 at 09:28:08AM +0200, Christer Weinigel wrote:
> So the OpenBSD man page seems to be in the minority here. Any portable
> code can not assume that CWD changes. And changing the Linux behaviour
> now would be a rather big change which might break userspace. And yes,
> there are applications that rely on this, I've used it when building
> software for cross compiling.
Changing Linux behavior would violate the POSIX and SuSV2
specifications; the standards explicitly state that the working
directory will NOT change. And standards adherance is important; we
break them only if we have a d*mn good reason. And trying to make
chroot() something which it is not (i.e., a secure jail) is certainly
not a good enough reason.
Can we please end this thread now? And can we put in a Kernel FAQ
saying that this is not something which is NOT up for discussion?
- Ted
next prev parent reply other threads:[~2007-09-27 11:23 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-19 7:19 sys_chroot+sys_fchdir Fix 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 [this message]
2007-09-27 14:36 ` Bill Davidsen
2007-09-28 1:06 ` David Newall
[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 ` Bodo Eggert
2007-09-20 11:59 ` Philipp Marek
2007-09-20 12:52 ` majkls
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
2007-09-24 23:02 ` 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
[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>
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