From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933468Ab1LFOTh (ORCPT ); Tue, 6 Dec 2011 09:19:37 -0500 Received: from yop.chewa.net ([91.121.105.214]:46958 "EHLO yop.chewa.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933255Ab1LFOTf convert rfc822-to-8bit (ORCPT ); Tue, 6 Dec 2011 09:19:35 -0500 From: "=?utf-8?q?R=C3=A9mi?= Denis-Courmont" Organization: Remlab.net To: linux-media@vger.kernel.org Subject: Re: [RFC] vtunerc: virtual DVB device - is it ok to NACK driver because of worrying about possible misusage? Date: Tue, 6 Dec 2011 16:19:30 +0200 User-Agent: KMail/1.13.7 (Linux/3.1.0-1-686-pae; KDE/4.6.5; i686; ; ) Cc: linux-kernel@vger.kernel.org References: <4EDE1733.8060409@redhat.com> <4EDE1D57.90307@linuxtv.org> In-Reply-To: <4EDE1D57.90307@linuxtv.org> MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 8BIT Message-Id: <201112061619.31357.remi@remlab.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Le mardi 6 décembre 2011 15:49:11 Andreas Oberritter, vous avez écrit : > You don't need to wait for write-only operations. Basically all demux > ioctls are write-only. Since vtunerc is using dvb-core's software demux > *locally*, errors for invalid arguments etc. will be returned as usual. That's a limitation, not a feature. You should not transmit unwanted programs over the network, nor copy them to kernel space. -- Rémi Denis-Courmont http://www.remlab.net/ http://fi.linkedin.com/in/remidenis