linux-kernel - Re: [PATCH] nextfd(2)

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Message-ID: <4F796581.1030302@openvz.org>
Date:	Mon, 02 Apr 2012 12:38:25 +0400
From:	Konstantin Khlebnikov <khlebnikov@...nvz.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Alexey Dobriyan <adobriyan@...il.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"viro@...iv.linux.org.uk" <viro@...iv.linux.org.uk>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
	"drepper@...il.com" <drepper@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	Cyrill Gorcunov <gorcunov@...nvz.org>
Subject: Re: [PATCH] nextfd(2)

Alan Cox wrote:
>> Can we add "pid" argument to be able to search next fd in other task?
>> Together with sys_kcmp() this will be very useful for checkpoint/restore.
>
> That would raise all sorts of security questions unless protected, plus
> its got races. If you want to do that and you have the rights you can do
> it via procfs anyway.

Don't worry, I just asked. =) Seems like crtools dumps fd in the target-task context,
so the current version is suitable.
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