Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933632AbaLKBrI (ORCPT ); Wed, 10 Dec 2014 20:47:08 -0500 Received: from shards.monkeyblade.net ([149.20.54.216]:49465 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932948AbaLKBrG (ORCPT ); Wed, 10 Dec 2014 20:47:06 -0500 Date: Wed, 10 Dec 2014 20:47:03 -0500 (EST) Message-Id: <20141210.204703.1525194278635097457.davem@davemloft.net> To: guz.fnst@cn.fujitsu.com Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, joe@perches.com Subject: Re: [PATCH v2] net: introduce helper macro for_each_cmsghdr From: David Miller In-Reply-To: <5488EDF7.7070001@cn.fujitsu.com> References: <20141210.134804.1383875260695429574.davem@davemloft.net> <20141210.144430.1749715282635917425.davem@davemloft.net> <5488EDF7.7070001@cn.fujitsu.com> X-Mailer: Mew version 6.6 on Emacs 24.3 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.7 (shards.monkeyblade.net [149.20.54.216]); Wed, 10 Dec 2014 17:47:05 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Gu Zheng Date: Thu, 11 Dec 2014 09:05:59 +0800 > IMO, the user-land programs need to be build with the matched > headers separately. You absolutely cannot provide this new interface to userland and expect programs to be able to just use it, it's non-standard and does not exist in older headers. I do not want this new interface available to userland programs. They can just open-code the list traversal just like every program in history has had to do since BSD UNIX. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/