From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 574DDC433E1 for ; Mon, 15 Jun 2020 13:44:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2A64E2078E for ; Mon, 15 Jun 2020 13:44:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=tycho-ws.20150623.gappssmtp.com header.i=@tycho-ws.20150623.gappssmtp.com header.b="IGw30QmJ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730057AbgFONoQ (ORCPT ); Mon, 15 Jun 2020 09:44:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59192 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729875AbgFONoP (ORCPT ); Mon, 15 Jun 2020 09:44:15 -0400 Received: from mail-ot1-x341.google.com (mail-ot1-x341.google.com [IPv6:2607:f8b0:4864:20::341]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 22B78C05BD43 for ; Mon, 15 Jun 2020 06:44:15 -0700 (PDT) Received: by mail-ot1-x341.google.com with SMTP id v13so13111792otp.4 for ; Mon, 15 Jun 2020 06:44:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tycho-ws.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=DkKzg92P2Wnmc9kMYYYrw93PtoNbrM8ZnPROxEKKoGY=; b=IGw30QmJ+zoGDiIJebtjFFK1H5e+9EUGpw/HlqPgVsV3po4pBBzrd7wL1xOXbZCKlL VMJK+1M4hHq4Ujc6lpsMU4FAJZMkdjuyS7+yyTZIN7YhgiPBYStd87+PSepcobYI+WRR aFzTk4hsgfulW39A/h9w38hQ1GFGMs8s40EntE/XsOWOTpVB+RlAn6pHfzVn+uecbgKO 3tSHkXE3g7qTHRtUl0yXv7+RVhKXjDXetd2D8LREamfHmo9J0Fm5zrSpowKFNNipg1Ro DFe1l2lZZeOsGq8MCrDQTgK9A8yyUWl3tktSeGzUqSDPcp5LmXeNa8L3Yt85Mlv+yx+a 8ctw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=DkKzg92P2Wnmc9kMYYYrw93PtoNbrM8ZnPROxEKKoGY=; b=VgfvyG+K74Zhh70vLn2JeQntutUOKgwsBXbGlLKa2bC2Ph8JXojArTIRTwId2J1ywC V1Qln4jCRnFgbeIyxsiNhen86fHX8+g/IUJqyUT972v2qhhZSXeVmXlGvsO/cAGjVWOK HmPRTuX7VZGalH1j1rng6VY9EWSbjIGUggJ5p1XYuH6vJakP1dcbgNRv2Hzt1ZVLd7qj OKpDWg5HacD7DOEZoperHqKpoHjxXP+JnnvkffNmyJMhUoM5BujDHtQoHkLmUi/IaceT f272x7stOvYyH0fbvCS0JvTayQ4ZZ9mghQHYhddpHh0JbEUAKImTYWYQ+ioUSndzcY/o mI0Q== X-Gm-Message-State: AOAM533NJsy5FsYEuBhDcLIdT+R4tXHbiNRgAFMXBzKPdBcN4m1Ete2H GU1IP2LRo8+5NL6kkqJLTG85QA== X-Google-Smtp-Source: ABdhPJyAlmEykMTdyfYusdBb3mxs03AQ09kHwYETLJTNl0C6+v5Qud6g/yU6aTwFkXV/gTFa0lZmKw== X-Received: by 2002:a9d:6b93:: with SMTP id b19mr20597483otq.31.1592228654131; Mon, 15 Jun 2020 06:44:14 -0700 (PDT) Received: from cisco ([2601:282:b02:8120:f5b5:cc36:51c:a840]) by smtp.gmail.com with ESMTPSA id m84sm3132316oif.32.2020.06.15.06.44.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Jun 2020 06:44:13 -0700 (PDT) Date: Mon, 15 Jun 2020 07:44:06 -0600 From: Tycho Andersen To: Sargun Dhillon Cc: Kees Cook , linux-kernel@vger.kernel.org, Aleksa Sarai , Christian Brauner , containers@lists.linux-foundation.org, linux-api@vger.kernel.org Subject: Re: [RFC PATCH] seccomp: Add extensibility mechanism to read notifications Message-ID: <20200615134406.GA2893648@cisco> References: <20200613072609.5919-1-sargun@sargun.me> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200613072609.5919-1-sargun@sargun.me> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jun 13, 2020 at 12:26:09AM -0700, Sargun Dhillon wrote: > This introduces an extensibility mechanism to receive seccomp > notifications. It uses read(2), as opposed to using an ioctl. The listener > must be first configured to write the notification via the > SECCOMP_IOCTL_NOTIF_CONFIG ioctl with the fields that the user is > interested in. I think we're not supposed to use read for control any more, because "read is for data". Tycho