linux-kernel - Re: [PATCH 2/3] block: fail SCSI passthrough ioctls on partition devices

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Date:	Thu, 22 Dec 2011 16:17:01 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Paolo Bonzini <pbonzini@...hat.com>, linux-kernel@...r.kernel.org,
	security@...nel.org, pmatouse@...hat.com, agk@...hat.com,
	jbottomley@...allels.com, mchristi@...hat.com, msnitzer@...hat.com
Subject: Re: [PATCH 2/3] block: fail SCSI passthrough ioctls on partition
 devices

On 12/22/2011 02:25 PM, Linus Torvalds wrote:
> I don't *think* anybody does something as crazy as giving actual block
> device ownership to people, but I don't know...

It's quite common and often very necessary to do, to allow a user to
manipulate a device that is not intended to be mounted.

	-hpa

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