linux-kernel - Re: [v2] Re: [091/129] block: fail SCSI passthrough ioctls on partition devices

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Date:	Wed, 25 Jan 2012 23:51:40 +0100 (CET)
From:	Sven-Haegar Koch <haegar@...net.de>
To:	Greg KH <greg@...ah.com>
cc:	Paolo Bonzini <pbonzini@...hat.com>, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	linux-scsi@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
	James Bottomley <JBottomley@...allels.com>
Subject: Re: [v2] Re: [091/129] block: fail SCSI passthrough ioctls on
 partition devices

On Wed, 25 Jan 2012, Greg KH wrote:

> On Tue, Jan 24, 2012 at 05:43:50PM +0100, Paolo Bonzini wrote:
> > > You need to return -ENOTTY from scsi_verify_blk_ioctl and -ENOIOCTLCMD from
> > > sd_compat_ioctl, because -ENOIOCTLCMD will not be handled correctly by
> > > block/ioctl.c.  This would break BLKROSET and BLKFLSBUF done by non-root
> > > but with the appropriate capabilities.
> > >
> > > Fixed patch follows.  If you prefer that I send an interdiff, let me know.
> 
> Wait, why do you want the stable trees to diverge from what is in
> Linus's tree with regards to the error codes being returned?
> 
> That doesn't seem safe, or sane.
> 
> So for now, I'm going to follow what is in Linus's tree.  If you
> need/want the error codes to be different, then shouldn't it also be
> done there as well?

May be because the stable trees do not have
07d106d0a33d6063d2061305903deb02489eba20? "vfs: fix up ENOIOCTLCMD error 
handling"?

c'ya
sven-haegar

-- 
Three may keep a secret, if two of them are dead.
- Ben F.
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