From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752664Ab2AYVoM (ORCPT ); Wed, 25 Jan 2012 16:44:12 -0500 Received: from lxorguk.ukuu.org.uk ([81.2.110.251]:46518 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752295Ab2AYVoL (ORCPT ); Wed, 25 Jan 2012 16:44:11 -0500 Date: Wed, 25 Jan 2012 21:45:22 +0000 From: Alan Cox To: Jiri Slaby Cc: Linus Torvalds , Greg KH , LKML Subject: Re: Why are not processes HUPped when they open /dev/console? Message-ID: <20120125214522.7a49cf39@pyramind.ukuu.org.uk> In-Reply-To: <4F207660.500@suse.cz> References: <4F207660.500@suse.cz> X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.8; x86_64-redhat-linux-gnu) Face: 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 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 25 Jan 2012 22:38:40 +0100 Jiri Slaby wrote: > Hello, > > don't you remember by a chance the reason for this test in __tty_hangup: > if (filp->f_op->write != tty_write) > > The logic there is not to HUP processes that have this tty open via > /dev/console. Because if you hang up the console the machine crashes ? At least that's what used to happen. Alan