From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266148AbUGEQhE (ORCPT ); Mon, 5 Jul 2004 12:37:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266149AbUGEQhE (ORCPT ); Mon, 5 Jul 2004 12:37:04 -0400 Received: from sarajevo.idealx.com ([213.41.87.90]:44995 "EHLO sarajevo.idealx.com") by vger.kernel.org with ESMTP id S266148AbUGEQhC convert rfc822-to-8bit (ORCPT ); Mon, 5 Jul 2004 12:37:02 -0400 From: =?iso-8859-1?q?S=E9bastien_BOMBAL?= Organization: IDEALX To: linux-kernel@vger.kernel.org Subject: Question about the role of macros _IO Date: Mon, 5 Jul 2004 18:30:46 +0200 User-Agent: KMail/1.6.2 MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Message-Id: <200407051830.46060.sbombal@idealx.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi everybody, I have a question about the purpose of macros _IO, _IOR, _IOW, _IORW. I saw in the 2.6 code that they are used sometimes for IOCTL to group them. Is it the only purpose ? Thanks for your help. Regards. -- Sébastien BOMBAL