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Date: Thu, 21 Jul 2011 19:47:25 +0200
From: Kurt Jaeger <lists@opsec.eu>
To: Artem Belevich <art@freebsd.org>
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Cc: freebsd-hackers <freebsd-hackers@freebsd.org>,
	freebsd-jail <freebsd-jail@freebsd.org>
Subject: Re: userland dtrace tools not working in jail
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Hi!

> > I try to use dtrace in jail on FreeBSD-9-64.
[...]
> > open("/boot/kernel/kernel",O_RDONLY,00)          ERR#2 'No such file
> > or directory'
> 
> Here's your problem ^^^.
> 
> dtrace extracts CTF information from the binaries. In case of kernel
> probes, that would be the kernel itself and loadable modules. All that
> stuff lives in /boot and is not accessible from your jail.

If he copied /boot to the jail, would it work ?

-- 
pi@opsec.eu            +49 171 3101372                         9 years to go !