linux-kernel - Re: [RFC PATCH] proc: making "limits" world readable

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Message-ID: <4CA0465F.6080508@redhat.com>
Date:	Mon, 27 Sep 2010 15:23:11 +0800
From:	Eugene Teo <eugene@...hat.com>
To:	Neil Horman <nhorman@...driver.com>
CC:	Jiri Olsa <jolsa@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, oleg@...sign.ru
Subject: Re: [RFC PATCH] proc: making "limits" world readable

On 09/25/2010 12:20 AM, Neil Horman wrote:
> On Fri, Sep 24, 2010 at 12:55:47PM +0200, Jiri Olsa wrote:
>> On Thu, Sep 23, 2010 at 02:56:42PM -0700, Andrew Morton wrote:
>>> On Tue, 21 Sep 2010 11:10:55 +0200
>>> Jiri Olsa<jolsa@...hat.com>  wrote:
>>>
>>>> hi,
>>>>
>>>> I'd like to have the /proc/<pid>/limits file world readable,
>>>
>>> Why?
>>>
>>
>> having this will ease the task of system management for large install
>> bases and where root privileges might be restricted
>>
>> jirka
>>
> I don't see a problem with making this file world readable.  Doing so would be
> in keeping with most of the other stats bearing files in /proc/<pid>.  The only
> reason I didn't make it world readable was because the getrlimit sematics
> previously kept limit information private to the process, and I didn't want to
> deviate from that.  But as long as we're not making it world writeable I think
> we're ok.
>
> Acked-by: Neil Horman<nhorman@...driver.com>

I agree with Neil. I can't see how this can be a problem as long as it 
is just world-readable.

Eugene
-- 
main(i) { putchar(182623909 >> (i-1) * 5&31|!!(i<7)<<6) && main(++i); }
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