block dangerous passthrough operation

[Kanchan Joshi]

On Wed, Nov 16, 2022 at 09:12:08AM -0700, Keith Busch wrote:
>On Wed, Nov 16, 2022 at 02:01:00PM +0100, Christoph Hellwig wrote:
>> Hi all,
>>
>> I recently had to debug some testing code that tried to send fabrics
>> commands and caused a major havoc.  This series adds checks for various
>> very low-level passthrough commands that have no business sent by anyone
>> but the driver itself.  The list might now be complete, so discussion
>> is welcome.
>
>People do use the fabrics command for 'get property' to check on their
>device, which is a harmless command that you've blocked.

Not about this series, but should not fabrics command be allowed for
unprivileged users? Trying to understand the harm linked to that.