netdev - can: add sanity checks

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Message-ID: <486BCCA0.9040006@hartkopp.net>
Date:	Wed, 02 Jul 2008 20:44:48 +0200
From:	Oliver Hartkopp <oliver@...tkopp.net>
To:	David Miller <davem@...emloft.net>
CC:	Urs Thuermann <urs.thuermann@...kswagen.de>,
	Oliver Hartkopp <oliver.hartkopp@...kswagen.de>,
	Andre Naujoks <nautsch@...il.com>,
	Linux Netdev List <netdev@...r.kernel.org>, stable@...nel.org
Subject: can: add sanity checks

Even though the CAN netlayer only deals with CAN netdevices, the 
netlayer interface to the userspace and to the device layer should 
perform some sanity checks.

This patch adds several sanity checks that mainly prevent userspace apps 
to send broken content into the system that may be misinterpreted by 
some other userspace application.

Signed-off-by: Oliver Hartkopp <oliver.hartkopp@...kswagen.de>
Signed-off-by: Urs Thuermann <urs.thuermann@...kswagen.de>
Acked-by: Andre Naujoks <nautsch@...il.com>
---


Hello Dave,

please consider this patch for 2.6.26. It adds several sanity checks 
that turned out to be necessary. I'll additionally cook a patch for 
-stable .25 .

Thanks to Andre Naujoks who accidentally built a really broken userspace 
app :-]

Thanks & best regards,
Oliver

View attachment "can-sanity-checks.patch" of type "text/x-diff" (3875 bytes)