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=-13.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 3383BC4361B for ; Tue, 8 Dec 2020 10:38:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E976223AA9 for ; Tue, 8 Dec 2020 10:38:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728870AbgLHKh7 (ORCPT ); Tue, 8 Dec 2020 05:37:59 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:38573 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726138AbgLHKh6 (ORCPT ); Tue, 8 Dec 2020 05:37:58 -0500 Received: from ip5f5af0a0.dynamic.kabel-deutschland.de ([95.90.240.160] helo=wittgenstein) by youngberry.canonical.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1kmaMp-0003ta-EI; Tue, 08 Dec 2020 10:37:11 +0000 Date: Tue, 8 Dec 2020 11:37:07 +0100 From: Christian Brauner To: Christoph Hellwig Cc: Alexander Viro , Christoph Hellwig , linux-fsdevel@vger.kernel.org, John Johansen , James Morris , Mimi Zohar , Dmitry Kasatkin , Stephen Smalley , Casey Schaufler , Arnd Bergmann , Andreas Dilger , OGAWA Hirofumi , Geoffrey Thomas , Mrunal Patel , Josh Triplett , Andy Lutomirski , Theodore Tso , Alban Crequy , Tycho Andersen , David Howells , James Bottomley , Seth Forshee , =?utf-8?B?U3TDqXBoYW5l?= Graber , Aleksa Sarai , Lennart Poettering , "Eric W. Biederman" , smbarber@chromium.org, Phil Estes , Serge Hallyn , Kees Cook , Todd Kjos , Paul Moore , Jonathan Corbet , containers@lists.linux-foundation.org, linux-security-module@vger.kernel.org, linux-api@vger.kernel.org, linux-ext4@vger.kernel.org, linux-integrity@vger.kernel.org, selinux@vger.kernel.org Subject: Re: [PATCH v4 06/40] fs: add mount_setattr() Message-ID: <20201208103707.px6buexwuusn6d3f@wittgenstein> References: <20201203235736.3528991-1-christian.brauner@ubuntu.com> <20201203235736.3528991-7-christian.brauner@ubuntu.com> <20201207171456.GC13614@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20201207171456.GC13614@lst.de> Precedence: bulk List-ID: On Mon, Dec 07, 2020 at 06:14:56PM +0100, Christoph Hellwig wrote: > > + switch (attr->propagation) { > > + case 0: > > + kattr->propagation = 0; > > + break; > > + case MS_UNBINDABLE: > > + kattr->propagation = MS_UNBINDABLE; > > + break; > > + case MS_PRIVATE: > > + kattr->propagation = MS_PRIVATE; > > + break; > > + case MS_SLAVE: > > + kattr->propagation = MS_SLAVE; > > + break; > > + case MS_SHARED: > > + kattr->propagation = MS_SHARED; > > + break; > > + default: > > + return -EINVAL; > > + } > > This can be shortened to: > > #define MOUNT_SETATTR_PROPAGATION_FLAGS \ > (MS_UNBINDABLE | MS_PRIVATE | MS_SLAVE | MS_SHARED) > > if (attr->propagation & ~MOUNT_SETATTR_PROPAGATION_FLAGS) > return -EINVAL; > if (hweight32(attr->propagation & MOUNT_SETATTR_PROPAGATION_FLAGS) > 1) > return -EINVAL; > kattr->propagation = attr->propagation; Looks good! I've applied that. > > > +asmlinkage long sys_mount_setattr(int dfd, const char __user *path, unsigned int flags, > > Overly long line. Folded after @path now. > > Otherwise looks good: > > Reviewed-by: Christoph Hellwig Thanks, I've pushed out the changes to: https://git.kernel.org/brauner/h/idmapped_mounts the original v4 can now be found at: https://git.kernel.org/brauner/h/idmapped_mounts_v4 You want a v5 with the changes you requested before you continue reviewing? Otherwise I'll just let you go through v4. Thanks! Christian