linux-kernel - Re: [patch] raw: don't allow the creation of a raw device with minor number 0

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Date:	Fri, 12 Jan 2007 23:41:28 +0100 (MET)
From:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
To:	Jeff Moyer <jmoyer@...hat.com>
cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Steven Fernandez <sfernand@...hat.com>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [patch] raw: don't allow the creation of a raw device with minor
 number 0


On Jan 12 2007 11:32, Jeff Moyer wrote:

>Date: Fri, 12 Jan 2007 11:32:11 -0500
>From: Jeff Moyer <jmoyer@...hat.com>
>To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
>Cc: Steven Fernandez <sfernand@...hat.com>, Andrew Morton <akpm@...l.org>
>Subject: [patch] raw: don't allow the creation of a raw device with minor
>    number 0
>
>Hi,
>
>Minor number 0 (under the raw major) is reserved for the rawctl device
>file, which is used to query, set, and unset raw device bindings.
>However, the ioctl interface does not protect the user from specifying
>a raw device with minor number 0:

No idea what to say about this... probably:

  What:   RAW driver (CONFIG_RAW_DRIVER)
  When:   December 2005
  Why:    declared obsolete since kernel 2.6.3
          O_DIRECT can be used instead
  Who:    Adrian Bunk <bunk@...sta.de>



	-`J'
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