Re: [PATCH v2] dm: don't allow ioctls to targets that don't map to whole devices

2017-02-03 Thread Mike Snitzer
On Fri, Feb 03 2017 at 11:22am -0500, Christoph Hellwig wrote: > .. at least for unprivileged 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

[PATCH v2] dm: don't allow ioctls to targets that don't map to whole devices

2017-02-03 Thread Christoph Hellwig
.. at least for unprivileged 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 the SCSI ioctl code is now optional, we really don't want to drag it in