From patchwork Tue Jul 20 14:24:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 12388455 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=-15.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 EBB90C07E95 for ; Tue, 20 Jul 2021 14:26:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D9F046120D for ; Tue, 20 Jul 2021 14:26:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237716AbhGTNpV (ORCPT ); Tue, 20 Jul 2021 09:45:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:43902 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239219AbhGTNoC (ORCPT ); Tue, 20 Jul 2021 09:44:02 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id ED0CF61186; Tue, 20 Jul 2021 14:24:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1626791080; bh=33FmweyIjGpVwxzS1gA3HQJS3T8GqGsOi0jCBxqYN30=; h=From:To:Cc:Subject:Date:From; b=YK4PZQq/OzfDxHeNyj17714LT48vsbniEwjfJNGXPs92nfuczOGbz/n+ah08bZbfG MpOGGYM1vqv5JXWRt359XrF8JfvHQ1GBUgsLW4b3uyZbtqV96stVh5pG9+CBTgNW6e vkX9zE/tEsMbqv40HhdMZc1hkM+9pLVld8RXoLMIFzeOMrw/U9ZYjakNdIpGLLGDH5 rmumfStwrIiWu37FSJmkl8ZeVWgw/G1dv6gLxsp2A5u7x+ePLSiKZUiPt/nlQd/mRE JV9ps9ufZ2DG7CIYNvn8EM/Yd4M4aI4OpTiCAlv2g9Al+YbZnNO2xx7S32yLtufp8a 2rftw4HYYmC8w== From: Arnd Bergmann To: netdev@vger.kernel.org Cc: Christoph Hellwig , Arnd Bergmann Subject: [PATCH net-next v5 0/4] remove compat_alloc_user_space() Date: Tue, 20 Jul 2021 16:24:32 +0200 Message-Id: <20210720142436.2096733-1-arnd@kernel.org> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Arnd Bergmann This is the fifth version of my series, now spanning four patches instead of two, with a new approach for handling struct ifreq compatibility after I realized that my earlier approach introduces additional problems. The idea here is to always push down the compat conversion deeper into the call stack: rather than pretending to be native mode with a modified copy of the original data on the user space stack, have the code that actually works on the data understand the difference between native and compat versions. I have spent a long time looking at all drivers that implement an ndo_do_ioctl callback to verify that my assumptions are correct. This has led to a series of 29 additional patches that I am not including here but will post separately, fixing a number of bugs in SIOCDEVPRIVATE ioctls, removing dead code, and splitting ndo_do_ioctl into two new ndo callbacks for private and ethernet specific commands. The patches are largely identical to v4 that I sent last November, with small fixes for issues pointed out by Jakub and my own randconfig build bot. Arnd Link: https://lore.kernel.org/netdev/20201124151828.169152-1-arnd@kernel.org/ Changes in v5: - Rebase to v5.14-rc2 - Fix a few build issues Changes in v4: - build fix without CONFIG_INET - build fix without CONFIG_COMPAT - style fixes pointed out by hch Changes in v3: - complete rewrite of the series Arnd Bergmann (4): ethtool: improve compat ioctl handling net: socket: rework SIOC?IFMAP ioctls net: socket: simplify dev_ifconf handling net: socket: rework compat_ifreq_ioctl() include/linux/compat.h | 82 +++++------ include/linux/ethtool.h | 4 - include/linux/inetdevice.h | 9 ++ include/linux/netdevice.h | 12 +- net/appletalk/ddp.c | 4 +- net/core/dev_ioctl.c | 152 ++++++++++--------- net/ethtool/ioctl.c | 136 +++++++++++++++-- net/ieee802154/socket.c | 4 +- net/ipv4/af_inet.c | 6 +- net/ipv4/devinet.c | 4 +- net/qrtr/qrtr.c | 4 +- net/socket.c | 292 +++++++++---------------------------- 12 files changed, 333 insertions(+), 376 deletions(-)