netdev - Re: [PATCH 1/2] iproute: Add magic cookie to route dump file

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Message-ID: <5012991F.9030806@parallels.com>
Date:	Fri, 27 Jul 2012 17:35:27 +0400
From:	Pavel Emelyanov <xemul@...allels.com>
To:	David Laight <David.Laight@...LAB.COM>
CC:	Stephen Hemminger <shemminger@...ux-foundation.org>,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [PATCH 1/2] iproute: Add magic cookie to route dump file

On 07/27/2012 02:46 PM, David Laight wrote:
>> In order to somehow verify that a blob contains route dump a
>> 4-bytes magic is put at the head of the data and is checked
>> on restore.
> 
> Wouldn't a hash/checksum be useful as well?

I doubt it. This magic is not for data integrity check, but is
rather for identification of it. Is someone really needs a cheksum
of a dump, it can be added after file generation (and by the
preferred tool, not limited with the iproute implementation).

> Especially if it uneditable data.
> 
> 	David
> 
> 
> 

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