From patchwork Thu Oct 29 00:32:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Brauner X-Patchwork-Id: 11864487 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 695E61130 for ; Thu, 29 Oct 2020 00:39:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 550F920790 for ; Thu, 29 Oct 2020 00:39:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388819AbgJ2Ajn (ORCPT ); Wed, 28 Oct 2020 20:39:43 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:33379 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731951AbgJ2Ajm (ORCPT ); Wed, 28 Oct 2020 20:39:42 -0400 Received: from ip5f5af0a0.dynamic.kabel-deutschland.de ([95.90.240.160] helo=wittgenstein.fritz.box) by youngberry.canonical.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1kXvux-0008Ep-Tg; Thu, 29 Oct 2020 00:35:52 +0000 From: Christian Brauner To: Alexander Viro , Christoph Hellwig , linux-fsdevel@vger.kernel.org Cc: 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 , Amir Goldstein , Miklos Szeredi , Theodore Tso , Alban Crequy , Tycho Andersen , David Howells , James Bottomley , Jann Horn , Seth Forshee , =?utf-8?q?St=C3=A9phane_Graber?= , Aleksa Sarai , Lennart Poettering , "Eric W. Biederman" , smbarber@chromium.org, Phil Estes , Serge Hallyn , Kees Cook , Todd Kjos , Jonathan Corbet , containers@lists.linux-foundation.org, linux-security-module@vger.kernel.org, linux-api@vger.kernel.org, linux-ext4@vger.kernel.org, linux-unionfs@vger.kernel.org, linux-audit@redhat.com, linux-integrity@vger.kernel.org, selinux@vger.kernel.org, Christian Brauner Subject: [PATCH 23/34] utimes: handle idmapped mounts Date: Thu, 29 Oct 2020 01:32:41 +0100 Message-Id: <20201029003252.2128653-24-christian.brauner@ubuntu.com> X-Mailer: git-send-email 2.29.0 In-Reply-To: <20201029003252.2128653-1-christian.brauner@ubuntu.com> References: <20201029003252.2128653-1-christian.brauner@ubuntu.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: selinux@vger.kernel.org Enable the vfs_utimes() helper to handle idmapped mounts by passing down the mount's user namespace to the earlier introduced notify_mapped_change() helper. Signed-off-by: Christian Brauner --- fs/utimes.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/utimes.c b/fs/utimes.c index fd3cc4226224..1c0b1f56fce2 100644 --- a/fs/utimes.c +++ b/fs/utimes.c @@ -22,6 +22,7 @@ int vfs_utimes(const struct path *path, struct timespec64 *times) struct iattr newattrs; struct inode *inode = path->dentry->d_inode; struct inode *delegated_inode = NULL; + struct user_namespace *user_ns; if (times) { if (!nsec_valid(times[0].tv_nsec) || @@ -61,8 +62,9 @@ int vfs_utimes(const struct path *path, struct timespec64 *times) newattrs.ia_valid |= ATTR_TOUCH; } retry_deleg: + user_ns = mnt_user_ns(path->mnt); inode_lock(inode); - error = notify_change(path->dentry, &newattrs, &delegated_inode); + error = notify_mapped_change(user_ns, path->dentry, &newattrs, &delegated_inode); inode_unlock(inode); if (delegated_inode) { error = break_deleg_wait(&delegated_inode);