From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934901Ab3DKQmd (ORCPT ); Thu, 11 Apr 2013 12:42:33 -0400 Received: from out01.mta.xmission.com ([166.70.13.231]:40875 "EHLO out01.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934717Ab3DKQma (ORCPT ); Thu, 11 Apr 2013 12:42:30 -0400 From: ebiederm@xmission.com (Eric W. Biederman) To: Greg KH Cc: linux-kernel@vger.kernel.org, Kay Sievers , Ming Lei References: <20130406165600.GA29660@kroah.com> <87y5cpvhaz.fsf@xmission.com> <20130411161936.GA390@kroah.com> Date: Thu, 11 Apr 2013 09:41:54 -0700 In-Reply-To: <20130411161936.GA390@kroah.com> (Greg KH's message of "Thu, 11 Apr 2013 09:19:36 -0700") Message-ID: <87d2u110kt.fsf@xmission.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-XM-AID: U2FsdGVkX19EWw6Ga4b2Kom3jVibz+uzkgxBYfhlC/0= X-SA-Exim-Connect-IP: 98.207.154.105 X-SA-Exim-Mail-From: ebiederm@xmission.com Subject: Re: [PATCH] driver core: add uid and gid to devtmpfs X-Spam-Flag: No X-SA-Exim-Version: 4.2.1 (built Wed, 14 Nov 2012 14:26:46 -0700) X-SA-Exim-Scanned: No (on in02.mta.xmission.com); Unknown failure Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Greg KH writes: > On Wed, Apr 10, 2013 at 09:10:12PM -0700, Eric W. Biederman wrote: >> Still it approaches being twisted to have files like >> /sys/class/net/eth0/uevent that anyone can read that will only return >> values in the initial user namespace. > > Side note, I don't think that ethernet network devices have uids :) I didn't think any devices had uids... :) The generic uevent file was the first place I could think of where we output this information to userspace. And I don't think that uevent file is specific network devices. There isn't anything that limits our netlink messages to clients in the initial user namespace either. Nothing huge, but there are some goofy kernel/user interaction cases that show up when you add this functionality. Eric