From patchwork Fri Jul 13 16:05:45 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tyler Hicks X-Patchwork-Id: 943685 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=canonical.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 41RyRC4Zynz9s0n for ; Sat, 14 Jul 2018 02:08:55 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731946AbeGMQX3 (ORCPT ); Fri, 13 Jul 2018 12:23:29 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:38386 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729787AbeGMQX2 (ORCPT ); Fri, 13 Jul 2018 12:23:28 -0400 Received: from 2.general.tyhicks.us.vpn ([10.172.64.53] helo=sec.ubuntu-ci) by youngberry.canonical.com with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.76) (envelope-from ) id 1fe0c5-0006pX-Uo; Fri, 13 Jul 2018 16:08:10 +0000 From: Tyler Hicks To: Greg Kroah-Hartman , Tejun Heo , "David S. Miller" , Stephen Hemminger Cc: Dmitry Torokhov , "Eric W. Biederman" , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, bridge@lists.linux-foundation.org, Linux Containers Subject: [PATCH net-next v2 3/7] kobject: kset_create_and_add() - fetch ownership info from parent Date: Fri, 13 Jul 2018 16:05:45 +0000 Message-Id: <1531497949-1766-4-git-send-email-tyhicks@canonical.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1531497949-1766-1-git-send-email-tyhicks@canonical.com> References: <1531497949-1766-1-git-send-email-tyhicks@canonical.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Dmitry Torokhov This change implements get_ownership() for ksets created with kset_create_and_add() call by fetching ownership data from parent kobject. This is done mostly for benefit of "queues" attribute of net devices so that corresponding directory belongs to container's root instead of global root for network devices in a container. Signed-off-by: Dmitry Torokhov Reviewed-by: Tyler Hicks --- lib/kobject.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/lib/kobject.c b/lib/kobject.c index f2dc1f756007..389829d3a1d1 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -887,9 +887,16 @@ static void kset_release(struct kobject *kobj) kfree(kset); } +void kset_get_ownership(struct kobject *kobj, kuid_t *uid, kgid_t *gid) +{ + if (kobj->parent) + kobject_get_ownership(kobj->parent, uid, gid); +} + static struct kobj_type kset_ktype = { .sysfs_ops = &kobj_sysfs_ops, - .release = kset_release, + .release = kset_release, + .get_ownership = kset_get_ownership, }; /**