linux-kernel - Re: [patch 1/4] fs, proc: Introduce /proc/<pid>/task/<tid>/children entry v8

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Message-ID: <m1boptmqj0.fsf@fess.ebiederm.org>
Date:	Tue, 24 Jan 2012 00:52:03 -0800
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Cyrill Gorcunov <gorcunov@...il.com>
Cc:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pavel Emelyanov <xemul@...allels.com>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	Kees Cook <keescook@...omium.org>, Tejun Heo <tj@...nel.org>,
	Andrew Vagin <avagin@...nvz.org>,
	Alexey Dobriyan <adobriyan@...il.com>
Subject: Re: [patch 1/4] fs, proc: Introduce /proc/<pid>/task/<tid>/children entry v8

Cyrill Gorcunov <gorcunov@...il.com> writes:

> On Tue, Jan 24, 2012 at 04:07:09PM +0900, KAMEZAWA Hiroyuki wrote:
>> > 
>> > Hmm. But userspace app will get eof, so frankly I don't see
>> > a problem here. Or maybe I miss something?
>> > 
>> 
>> Userspace need to take care of whether there may be"\n" or not even
>> if read() returns EOF.
>> As an interface, it's BUG to say "\n" will be there if you're lucky!"
>> (*) I know script language can handle this but we shouldn't assume that.
>> 
>> How about just remove "\n" at EOF  ? I think it's unnecessary.
>> 
>
> Sure thing, it's not a problem to remove it completely.

Foolish question.  Is there any reason why this is a file instead
of being the obvious directory full of symlinks?

Eric
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