From: "Jörn Engel" <joern@wohnheim.fh-wedel.de>
To: Gianni Tedesco <gianni@scaramanga.co.uk>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Console: fall back to /dev/null when no console is availlable
Date: Wed, 6 Oct 2004 21:08:56 +0200 [thread overview]
Message-ID: <20041006190856.GE10153@wohnheim.fh-wedel.de> (raw)
In-Reply-To: <1097087850.27683.3.camel@sherbert>
On Wed, 6 October 2004 19:37:30 +0100, Gianni Tedesco wrote:
>
> BTW. What happens if /dev/console or /dev/null are regular files?
Interesting point. Any readers (init, some/all of it's children) will
read until one reaches EOF, all writers will flood it 'til it's full.
If there was an IOUAC (international obfuscated unix abuse contest),
you could use this for IPC, maybe.
> I don't see any check for this. I didn't think Linux imposed any
> namespace layout/ownership/permission requirements.
Anyone able to turn /dev/console into a regular file can already do
much worse things. Don't think it's a security issue.
Jörn
--
Simplicity is prerequisite for reliability.
-- Edsger W. Dijkstra
prev parent reply other threads:[~2004-10-06 19:08 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-05 18:52 Jörn Engel
2004-10-05 20:27 ` Russell King
2004-10-05 21:06 ` Greg KH
2004-10-05 21:13 ` Russell King
2004-10-06 15:00 ` Alan Cox
2004-10-06 17:41 ` Greg KH
2004-10-06 18:01 ` Jörn Engel
2004-10-06 18:18 ` Greg KH
2004-10-06 19:20 ` Jörn Engel
2004-10-06 18:26 ` Chris Wright
2004-10-06 18:16 ` Andries Brouwer
2004-10-06 19:18 ` Alan Cox
2004-10-06 20:54 ` Greg KH
2004-10-06 20:29 ` Alan Cox
2004-10-06 21:45 ` Russell King
2004-10-07 5:51 ` Valdis.Kletnieks
2004-10-08 2:15 ` Herbert Xu
2004-10-06 20:01 ` Russell King
2004-10-05 22:36 ` Andries Brouwer
2004-10-06 6:43 ` Russell King
2004-10-07 14:41 ` Jan-Benedict Glaw
2004-10-05 21:58 ` Denis Vlasenko
2004-10-06 4:34 ` Willy Tarreau
2004-10-06 8:43 ` Geert Uytterhoeven
2004-10-06 12:15 ` Jörn Engel
2004-10-06 13:07 ` Geert Uytterhoeven
2004-10-06 13:33 ` Jörn Engel
2004-10-06 13:55 ` Geert Uytterhoeven
2004-10-06 14:12 ` Jörn Engel
2004-10-06 14:23 ` Geert Uytterhoeven
2004-10-06 15:28 ` Jörn Engel
2004-10-06 15:36 ` Geert Uytterhoeven
2004-10-06 15:51 ` Jörn Engel
2004-10-05 23:30 ` Andrew Morton
2004-10-06 12:16 ` Jörn Engel
2004-10-06 17:38 ` Greg KH
2004-10-06 18:04 ` Jörn Engel
2004-10-06 18:19 ` Greg KH
2004-10-06 19:23 ` Jörn Engel
2004-10-06 21:22 ` Thayne Harbaugh
2004-10-07 8:18 ` Geert Uytterhoeven
2004-10-07 9:07 ` Russell King
2004-10-07 9:46 ` Geert Uytterhoeven
2004-10-06 18:37 ` Gianni Tedesco
2004-10-06 19:08 ` Jörn Engel [this message]
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