From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jakub Wilk Date: Fri, 30 May 2014 22:26:22 +0000 Subject: Re: [PATCH] console: Add persistent scrollback buffers for all VGA consoles Message-Id: <20140530222622.GA1385@jwilk.net> List-Id: References: <1401456425-15931-1-git-send-email-manuel.schoelling@gmx.de> In-Reply-To: <1401456425-15931-1-git-send-email-manuel.schoelling@gmx.de> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: Manuel =?iso-8859-1?Q?Sch=F6lling?= Cc: plagnioj@jcrosoft.com, tomi.valkeinen@ti.com, geert@linux-m68k.org, broonie@linaro.org, rdunlap@infradead.org, dh.herrmann@gmail.com, airlied@redhat.com, mtosatti@redhat.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org * Manuel Sch=F6lling , 2014-05-30, 15:27: >Add a scrollback buffers for each VGA console. The benefit is that the=20 >scrollback history is not flushed when switching between consoles but=20 >is persistent. Some people rely on this scrollback flushing as a security feature. Is=20 there even another way to clear the scrollback, than to switch to=20 another vt and then back again? Debian ships this: http://manpages.debian.org/cgi-bin/man.cgi?query=3Dclear_console https://sources.debian.net/src/bash/4.2%2Bdfsg-0.1/debian/clear_console.c --=20 Jakub Wilk From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756296AbaE3WwR (ORCPT ); Fri, 30 May 2014 18:52:17 -0400 Received: from master.debian.org ([82.195.75.110]:54314 "EHLO master.debian.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751983AbaE3WwQ (ORCPT ); Fri, 30 May 2014 18:52:16 -0400 X-Greylist: delayed 1535 seconds by postgrey-1.27 at vger.kernel.org; Fri, 30 May 2014 18:52:15 EDT Date: Sat, 31 May 2014 00:26:22 +0200 From: Jakub Wilk To: Manuel =?iso-8859-1?Q?Sch=F6lling?= Cc: plagnioj@jcrosoft.com, tomi.valkeinen@ti.com, geert@linux-m68k.org, broonie@linaro.org, rdunlap@infradead.org, dh.herrmann@gmail.com, airlied@redhat.com, mtosatti@redhat.com, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] console: Add persistent scrollback buffers for all VGA consoles Message-ID: <20140530222622.GA1385@jwilk.net> References: <1401456425-15931-1-git-send-email-manuel.schoelling@gmx.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1401456425-15931-1-git-send-email-manuel.schoelling@gmx.de> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Manuel Schölling , 2014-05-30, 15:27: >Add a scrollback buffers for each VGA console. The benefit is that the >scrollback history is not flushed when switching between consoles but >is persistent. Some people rely on this scrollback flushing as a security feature. Is there even another way to clear the scrollback, than to switch to another vt and then back again? Debian ships this: http://manpages.debian.org/cgi-bin/man.cgi?query=clear_console https://sources.debian.net/src/bash/4.2%2Bdfsg-0.1/debian/clear_console.c -- Jakub Wilk