Re: [PATCH v2] block: silently forbid sending any ioctl to a partition

From: Jens Axboe
Date: Wed Jan 10 2018 - 14:31:11 EST


On 1/10/18 8:54 AM, Paolo Bonzini wrote:
> After the first few months, the message has not led to many bug reports.
> It's been almost five years now, and in practice the main source of
> it seems to be MTIOCGET that someone is using to detect tape devices.
> While we could whitelist it just like CDROM_GET_CAPABILITY, this patch
> just removes the message altogether.
>
> The patch also removes the "safe but not very useful" ioctl whitelist,
> as suggested by Christoph. I doubt anything is using most of those
> ioctls _in general_, let alone on a partition.

Applied, thanks.

--
Jens Axboe