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Date: Thu, 27 Sep 2007 09:16:16 -0500
From: Craig Boston <cb@severious.net>
To: cpghost <cpghost@cordula.ws>
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Cc: Daichi GOTO <daichi@freebsd.org>,
	FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re: wrapping dynamic syscalls with wrap(1) (was: safety-rm)
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On Thu, Sep 27, 2007 at 03:55:19PM +0200, cpghost wrote:
> Ideally, users should have a generic way to wrap syscalls (or
> other dynamic library calls) with a program similar to env(1),
> let's call it wrap(1). A call to wrap(1):

Anyone who implements this should be aware of the security issues
surrounding system-call wrapping:

http://www.watson.org/~robert/2007woot/

The short version is that it's extremely difficult to safely wrap system
calls, and probably impossible without kernel support.

Craig