[dm-devel] [PATCH] dm: don't allow ioctls to targets that don't map to whole devices

[Johannes Thumshirn]

On 02/03/2017 11:06 AM, Christoph Hellwig wrote:
> .. at least for unprivilegued users.  Before we called into the SCSI
> ioctl code to allow excemptions for a few SCSI passthrough ioctls,
> but this is pretty unsafe and except for this call dm knows nothing
> about SCSI ioctls.  As SCSI the SCSI ioctl code is made optionally
                                              ^~ duped SCSI or should it 
read "as in SCSI the SCSI ioctl code [...]"

> now we really don't want to drag it in for DM, and the exception is
> not very useful anyway.
>
> Signed-off-by: Christoph Hellwig <hch at lst.de>
>
> Note: this should go into the block tree, as that's where
> scsi_verify_blk_ioctl becomes optional.
>
> ---
Rest looks OK to me,
Reviewed-by: Johannes Thumshirn <jthumshirn at suse.de>

-- 
Johannes Thumshirn                                          Storage
jthumshirn at suse.de                                +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Felix Imendörffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nürnberg)
Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850