linux-kernel - Re: [PATCH v2] kernel: escape non-ASCII and control characters in printk()

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Message-ID: <20110627104058.45e93c41@pyx>
Date:	Mon, 27 Jun 2011 10:40:58 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Vasiliy Kulikov <segoon@...nwall.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	James Morris <jmorris@...ei.org>,
	Namhyung Kim <namhyung@...il.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	kernel-hardening@...ts.openwall.com, linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH v2] kernel: escape non-ASCII and control characters in
 printk()


Go back and read what I said originally, and think about it.

You have to look at the IUTF bit of the relevant console you are logging
to.

As far as I can see we need:

No IUTF: block various control codes + CSI
IUTF: block various control codes only

But arbitarily blocking anything non ASCII is going to make a mess in
anything non American. Even English needs UTF-8.

Alan
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