Re: [PATCH v6 2/3] io_uring: add IOURING_REGISTER_RESTRICTIONS opcode

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Subject: Re: [PATCH v6 2/3] io_uring: add IOURING_REGISTER_RESTRICTIONS opcode
From: Daurnimator <quae@xxxxxxxxxxxxxxx>
Date: Mon, 4 Jan 2021 01:26:41 +1100
Cc: Jens Axboe <axboe@xxxxxxxxx>, Kernel Hardening <kernel-hardening@xxxxxxxxxxxxxxxxxx>, Christian Brauner <christian.brauner@xxxxxxxxxx>, io-uring <io-uring@xxxxxxxxxxxxxxx>, Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>, Stefan Hajnoczi <stefanha@xxxxxxxxxx>, Jann Horn <jannh@xxxxxxxxxx>, Jeff Moyer <jmoyer@xxxxxxxxxx>, Aleksa Sarai <asarai@xxxxxxx>, Sargun Dhillon <sargun@xxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Kees Cook <keescook@xxxxxxxxxxxx>
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In-reply-to: <20200827145831.95189-3-sgarzare@redhat.com>
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On Fri, 28 Aug 2020 at 00:59, Stefano Garzarella <sgarzare@xxxxxxxxxx> 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?

Follow-Ups:
- Re: [PATCH v6 2/3] io_uring: add IOURING_REGISTER_RESTRICTIONS opcode
  - From: Stefano Garzarella

References:
- [PATCH v6 0/3] io_uring: add restrictions to support untrusted applications and guests
  - From: Stefano Garzarella
- [PATCH v6 2/3] io_uring: add IOURING_REGISTER_RESTRICTIONS opcode
  - From: Stefano Garzarella

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