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Message-ID: <17273.13602.687203.565440@wombat.chubb.wattle.id.au>
Date: Tue, 15 Nov 2005 12:08:50 +1100
From: Peter Chubb <peterc@gelato.unsw.edu.au>
To: Claudio Scordino <cloud.of.andor@gmail.com>
Cc: "Magnus Naeslund(f)" <mag@fbab.net>,
       "Hua Zhong (hzhong)" <hzhong@cisco.com>, linux-kernel@vger.kernel.org,
       kernelnewbies@nl.linux.org
Subject: Re: [PATCH] getrusage sucks
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>>>>> "Claudio" == Claudio Scordino <cloud.of.andor@gmail.com> writes:

>> You need to wrap this with a read_lock(&tasklist_lock) to be safe,
>> I think.
Claudio> Right. Probably this was the meaning also of Hua's
Claudio> mail. Sorry, but I didn't get it immediately.

Claudio> So, what if I do as follows ? Do you see any problem with
Claudio> this solution ?

You should probably restrict the ability to read a process's usage to
a suitably privileged user -- i.e., effective uid same as the task's,
or capable(CAP_SYS_RESOURCE) or maybe capable(CAP_SYS_ADMIN)

-- 
Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT gelato.unsw.edu.au
The technical we do immediately,  the political takes *forever*
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