linux-kernel - Re: Chroot bug

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Message-ID: <20070925170933.GJ8181@ftp.linux.org.uk>
Date:	Tue, 25 Sep 2007 18:09:33 +0100
From:	Al Viro <viro@....linux.org.uk>
To:	Jan Engelhardt <jengelh@...putergmbh.de>
Cc:	Miloslav Semler <majkls@...pere.com>, serge@...lyn.com,
	davidsen@....com, philipp@...ek.priv.at, 7eggert@....de,
	alan@...rguk.ukuu.org.uk, linux-kernel@...r.kernel.org
Subject: Re: Chroot bug

On Tue, Sep 25, 2007 at 07:05:06PM +0200, Jan Engelhardt wrote:

> Perhaps that was formulated a bit sloppy. It of course means
> "On chroot(2), implicitly close all FDs that point outside."

Bollocks.  Pack 'em into SCM_RIGHTS datagram, send to yourself,
do chroot, recvmsg() and move on, cheerfully spitting at the
YAidiotic "hardening".
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