From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konstantin Khlebnikov <khlebnikov@openvz.org>
Subject: Re: [PATCH] nextfd(2)
Date: Mon, 02 Apr 2012 12:38:25 +0400
Message-ID: <4F796581.1030302@openvz.org>
References: <20120401125741.GA7484@p183.telecom.by> <4F785F1D.4020503@openvz.org> <20120402010937.38b33576@pyramind.ukuu.org.uk>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: Alexey Dobriyan <adobriyan@gmail.com>,
	"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
	"viro@zeniv.linux.org.uk" <viro@zeniv.linux.org.uk>,
	"torvalds@linux-foundation.org" <torvalds@linux-foundation.org>,
	"drepper@gmail.com" <drepper@gmail.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
	Cyrill Gorcunov <gorcunov@openvz.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <20120402010937.38b33576@pyramind.ukuu.org.uk>
Sender: linux-kernel-owner@vger.kernel.org
List-Id: linux-fsdevel.vger.kernel.org

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.