From patchwork Thu Aug 13 15:32:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Garzarella X-Patchwork-Id: 11712603 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B32A5109B for ; Thu, 13 Aug 2020 15:33:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9646C20866 for ; Thu, 13 Aug 2020 15:33:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ZO1pXnIf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726684AbgHMPd3 (ORCPT ); Thu, 13 Aug 2020 11:33:29 -0400 Received: from us-smtp-1.mimecast.com ([207.211.31.81]:22028 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726427AbgHMPd2 (ORCPT ); Thu, 13 Aug 2020 11:33:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1597332807; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3NyHfHbF6ww7AOILglJMvLxTHqil+Il52XX3iacaG1c=; b=ZO1pXnIf+yadrE8FVwvSWUCf9Jt5IRUNMh4IyKlOxGOyXDPduPuzzNzBPsrlkX9vbuiNqH kHpLqOogUAdoWL830BUo5yjuAWYRmaS43v+Q8khEKEyFl2WsQvMQhNnVg+U/vd6kRoiOqH ErsdQPW+bD3A9XWsbqjkVdXyOSbmG60= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-277-P_6uw1VhOiiPCWSeelheKQ-1; Thu, 13 Aug 2020 11:33:25 -0400 X-MC-Unique: P_6uw1VhOiiPCWSeelheKQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A36F5807323; Thu, 13 Aug 2020 15:33:23 +0000 (UTC) Received: from steredhat.redhat.com (ovpn-113-140.ams2.redhat.com [10.36.113.140]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4E52260C04; Thu, 13 Aug 2020 15:33:18 +0000 (UTC) From: Stefano Garzarella To: Jens Axboe Cc: Christian Brauner , Jann Horn , Jeff Moyer , linux-fsdevel@vger.kernel.org, Sargun Dhillon , Kees Cook , Alexander Viro , Kernel Hardening , Stefan Hajnoczi , linux-kernel@vger.kernel.org, Aleksa Sarai , io-uring@vger.kernel.org Subject: [PATCH v4 1/3] io_uring: use an enumeration for io_uring_register(2) opcodes Date: Thu, 13 Aug 2020 17:32:52 +0200 Message-Id: <20200813153254.93731-2-sgarzare@redhat.com> In-Reply-To: <20200813153254.93731-1-sgarzare@redhat.com> References: <20200813153254.93731-1-sgarzare@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org The enumeration allows us to keep track of the last io_uring_register(2) opcode available. Behaviour and opcodes names don't change. Signed-off-by: Stefano Garzarella Reviewed-by: Kees Cook --- include/uapi/linux/io_uring.h | 27 ++++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-) diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index d65fde732518..cdc98afbacc3 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -255,17 +255,22 @@ struct io_uring_params { /* * io_uring_register(2) opcodes and arguments */ -#define IORING_REGISTER_BUFFERS 0 -#define IORING_UNREGISTER_BUFFERS 1 -#define IORING_REGISTER_FILES 2 -#define IORING_UNREGISTER_FILES 3 -#define IORING_REGISTER_EVENTFD 4 -#define IORING_UNREGISTER_EVENTFD 5 -#define IORING_REGISTER_FILES_UPDATE 6 -#define IORING_REGISTER_EVENTFD_ASYNC 7 -#define IORING_REGISTER_PROBE 8 -#define IORING_REGISTER_PERSONALITY 9 -#define IORING_UNREGISTER_PERSONALITY 10 +enum { + IORING_REGISTER_BUFFERS, + IORING_UNREGISTER_BUFFERS, + IORING_REGISTER_FILES, + IORING_UNREGISTER_FILES, + IORING_REGISTER_EVENTFD, + IORING_UNREGISTER_EVENTFD, + IORING_REGISTER_FILES_UPDATE, + IORING_REGISTER_EVENTFD_ASYNC, + IORING_REGISTER_PROBE, + IORING_REGISTER_PERSONALITY, + IORING_UNREGISTER_PERSONALITY, + + /* this goes last */ + IORING_REGISTER_LAST +}; struct io_uring_files_update { __u32 offset;