From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423046AbXCGRni (ORCPT ); Wed, 7 Mar 2007 12:43:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965625AbXCGRnh (ORCPT ); Wed, 7 Mar 2007 12:43:37 -0500 Received: from x35.xmailserver.org ([64.71.152.41]:42649 "EHLO x35.xmailserver.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965620AbXCGRms (ORCPT ); Wed, 7 Mar 2007 12:42:48 -0500 X-AuthUser: davidel@xmailserver.org Date: Wed, 7 Mar 2007 09:42:37 -0800 (PST) From: Davide Libenzi X-X-Sender: davide@alien.or.mcafeemobile.com To: Stephen Rothwell cc: Linux Kernel Mailing List , Andrew Morton , Linus Torvalds Subject: Re: [patch 1/4] signalfd v1 - signalfd core ... In-Reply-To: <20070307233833.f1482f86.sfr@canb.auug.org.au> Message-ID: References: <20070307155553.06c82ca1.sfr@canb.auug.org.au> <20070307233833.f1482f86.sfr@canb.auug.org.au> X-GPG-FINGRPRINT: CFAE 5BEE FD36 F65E E640 56FE 0974 BF23 270F 474E X-GPG-PUBLIC_KEY: http://www.xmailserver.org/davidel.asc MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 7 Mar 2007, Stephen Rothwell wrote: > Then, of course, you have to think about how to get the siginfo_t out to > the user process. Do you just return it from the read after the read > that returns the signal number? If so, you need to know if the process > did a compat read syscall read or a normal one ... It can be a read(2) of a structure that does not need compat. It must be that way, because compat-on-read are out of question. - Davide