linux-kernel - Re: [PATCH] console: Add persistent scrollback buffers for all VGA consoles

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Message-ID: <20140530222622.GA1385@jwilk.net>
Date:	Sat, 31 May 2014 00:26:22 +0200
From:	Jakub Wilk <jwilk@...ian.org>
To:	Manuel Schölling <manuel.schoelling@....de>
Cc:	plagnioj@...osoft.com, tomi.valkeinen@...com, geert@...ux-m68k.org,
	broonie@...aro.org, rdunlap@...radead.org, dh.herrmann@...il.com,
	airlied@...hat.com, mtosatti@...hat.com,
	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] console: Add persistent scrollback buffers for all VGA
 consoles

* Manuel Schölling <manuel.schoelling@....de>, 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
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