Received: by 2002:a05:6a10:9848:0:0:0:0 with SMTP id x8csp190291pxf; Thu, 25 Mar 2021 01:32:29 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxGAsyFrPIp7z0d5GifufV2nyWbv6M3rKw8TpBuvGJBAiTDALsbuqMYAZUivautkkLr8wrZ X-Received: by 2002:a17:906:33d9:: with SMTP id w25mr8475589eja.413.1616661149589; Thu, 25 Mar 2021 01:32:29 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1616661149; cv=none; d=google.com; s=arc-20160816; b=0lH0PpO9NLRWVI9kqiccNgWNwSsmY/CxUbb10lX02l7DhecF3rua4gPQUNaj68cgAe 9lyqQ/OqDyP2zZCGM3qwOAIN8taDnQ/pOBTodmXDmMioHhYTj052c1yGL0d9R+vvhJkG EknIB9ylmozmqGQ79eLREdd4cWWEJoRweyp/0TwOmvYIwTf+aK2UKDRNhhirQBNGSFEJ FWkIHnzgbKwO9H2/W2K0z+sOsxmQ2mm7UalktRt4bkpSBtyvf0aQXMp1SfNSbXQMQOZ+ 1OGpIBwt6wDolmMjj+Ba68tNiGZfxWie/7hWt0insJDN7uIbB1oBnOT5FawXtLv2tABQ YlSA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date; bh=c4dMQqMzSlxOSe6CJLP203wT85mYbeqnTVO4H9VRQaY=; b=btFYIgnYEdFJK+ko6bvmDYhsJxA8R8l08BQ6JXC5+FX/Jpa6q3dGZhgfvQbwG4ZFdf a9oQGlp+54wIdDQ73yBSkpZhzKsnvr/hfLbv6EAKCX/oLa/nsFi5Eor72yX/iWUosk+3 70oXt1FCxglr4OeSyMYO9u+2VqiNgV9RjPzWlhtTXcBopUbM9OMwN2ZxZ+P1KQZFMhEq lNoZCcWVOhGwFKQrqzuE+QGACaEUiE7t4LfsSQLKgpbTWrQnrocRbVRWdYHUFIZ3jTSC 8T4kKuXeJxqjyT/ojvSnnYSLa5uFnsEuM+KYg0WPpPyubb7L8s4HF38fQrrLjCwl9J77 4Dnw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id c11si3643384ede.102.2021.03.25.01.32.07; Thu, 25 Mar 2021 01:32:29 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229581AbhCYIan (ORCPT + 99 others); Thu, 25 Mar 2021 04:30:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:54250 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229904AbhCYIaU (ORCPT ); Thu, 25 Mar 2021 04:30:20 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D53A161A16; Thu, 25 Mar 2021 08:30:18 +0000 (UTC) Date: Thu, 25 Mar 2021 09:30:16 +0100 From: Christian Brauner To: Christoph Hellwig Cc: Al Viro , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Kees Cook , Andy Lutomirski , Will Drewry Subject: Re: split receive_fd_replace from __receive_fd Message-ID: <20210325083016.nwn2dbtuyearrxfd@wittgenstein> References: <20210325082209.1067987-1-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20210325082209.1067987-1-hch@lst.de> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Mar 25, 2021 at 09:22:08AM +0100, Christoph Hellwig wrote: > The receive_fd_replace case shares almost no logic with the more general > __receive_fd case, so split it into a separate function. > > BTW, I'm not sure if receive_fd_replace is such a useful primitive to > start with, why not just open code it in seccomp? I tend to agree and argued in a similar fashion back when we added this but we ultimately decided to add it. So now we're back to the original argument. :) Christian