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From: Stefano Garzarella <[email protected]>
To: Daurnimator <[email protected]>
Cc: Jens Axboe <[email protected]>,
	Kernel Hardening <[email protected]>,
	Christian Brauner <[email protected]>,
	io-uring <[email protected]>,
	Alexander Viro <[email protected]>,
	Stefan Hajnoczi <[email protected]>,
	Jann Horn <[email protected]>, Jeff Moyer <[email protected]>,
	Aleksa Sarai <[email protected]>, Sargun Dhillon <[email protected]>,
	[email protected], Kees Cook <[email protected]>
Subject: Re: [PATCH v6 2/3] io_uring: add IOURING_REGISTER_RESTRICTIONS opcode
Date: Thu, 7 Jan 2021 09:39:32 +0100	[thread overview]
Message-ID: <20210107083932.ho6vo5g5hmdohwqt@steredhat> (raw)
In-Reply-To: <CAEnbY+fS8FXVeouOxN3uohTvo7fBi5r7TQCGBZUmG3MGJhBrYg@mail.gmail.com>

On Mon, Jan 04, 2021 at 01:26:41AM +1100, Daurnimator wrote:
>On Fri, 28 Aug 2020 at 00:59, Stefano Garzarella <[email protected]> wrote:
>> +               __u8 register_op; /* IORING_RESTRICTION_REGISTER_OP */
>
>Can you confirm that this intentionally limited the future range of
>IORING_REGISTER opcodes to 0-255?
>

It was based on io_uring_probe, so we used u8 for opcodes, but we have 
room to extend it in the future.

So, for now, this allow to register restrictions up to 255 
IORING_REGISTER opcode.


  reply	other threads:[~2021-01-07  8:41 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-27 14:58 [PATCH v6 0/3] io_uring: add restrictions to support untrusted applications and guests Stefano Garzarella
2020-08-27 14:58 ` [PATCH v6 1/3] io_uring: use an enumeration for io_uring_register(2) opcodes Stefano Garzarella
2020-08-27 14:58 ` [PATCH v6 2/3] io_uring: add IOURING_REGISTER_RESTRICTIONS opcode Stefano Garzarella
2021-01-03 14:26   ` Daurnimator
2021-01-07  8:39     ` Stefano Garzarella [this message]
2020-08-27 14:58 ` [PATCH v6 3/3] io_uring: allow disabling rings during the creation Stefano Garzarella
2020-09-08 13:44   ` Stefano Garzarella
2020-09-08 13:57     ` Jens Axboe
2020-09-08 14:10       ` Stefano Garzarella
2020-09-08 14:11         ` Jens Axboe
2020-08-28  3:01 ` [PATCH v6 0/3] io_uring: add restrictions to support untrusted applications and guests Jens Axboe

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