From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: util-linux-owner@vger.kernel.org Received: from stirling.just4dns.com ([178.18.116.215]:40727 "EHLO stirling.just4dns.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753294AbaA3Tis (ORCPT ); Thu, 30 Jan 2014 14:38:48 -0500 Message-ID: <52EAAA43.8030509@stella-maris.org.uk> Date: Thu, 30 Jan 2014 19:38:43 +0000 From: Stuart T Rogers MIME-Version: 1.0 To: "Dale R. Worley" , util-linux@vger.kernel.org Subject: Re: Possible problem mounting Video DVD References: <52E7EBBC.4070009@stella-maris.org.uk> <201401282126.s0SLQFZK011980@hobgoblin.ariadne.com> <52E836E0.70900@stella-maris.org.uk> <201401292054.s0TKsrph021368@hobgoblin.ariadne.com> <52E98342.8070103@stella-maris.org.uk> <201401301906.s0UJ60YL023456@hobgoblin.ariadne.com> In-Reply-To: <201401301906.s0UJ60YL023456@hobgoblin.ariadne.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: util-linux-owner@vger.kernel.org List-ID: On 30/01/14 19:06, Dale R. Worley wrote: >> From: Stuart T Rogers > >> OK let me explain, I am not issuing any mount commands myself. I place >> the DVD in the drive and close it, wait until it appears in the device >> notifier and select action Open in File Manager, when it opens having >> been mounted by the system at run/media/stuart/DVD_RECORDER the response >> from Dolphin is that the permissions wont allow me to open the root >> directory of the drive for browsing. If I try to play the video using >> Dragon etc again this works OK the permissions it is mounted with do not >> stop that action. > > In regard to *playing* the videos, it's possible that the players > don't mount the DVD as a file system at all, so the fact that they > work isn't particularly informative. > > http://forums.fedoraforum.org/showthread.php?t=296874 > > It looks like Skull One in that thread has the best explanation. I'm > not familiar with the details of mounting DVDs, but he suggests that > the directories /run/media/stuart/DVD_VIDEO_RECORDER and > /run/media/stuart/LG_VDR *on your disk* may have different > permissions, and those permissions leak into the permissions seen when > a DVD is mounted there. So what are the permissions on those > directories (when no DVD is mounted)? > > In any case, it's unlikely to be a problem that this mailing list > deals with. We only handle the mount executable. One possibility is > that the DVD mount and processing code in the kernel is providing > unreasonable permission values (after all, it synthesizes them), in > which case the fix is a kernel change. Another possibility is that > adjusting the permissions of /run/media/stuart/DVD_VIDEO_RECORDER will > make the problem go away, in which case it can reasonably be > considered to be a configuration error. It's also possible that > whatever is automounting the DVD isn't being smart enough about the > permissions it is setting up for the DVD file system. That would be a > problem for the a different mailing list. > > Dale > Dale Thanks for that explanation. The only thing regarding the DVD_RECORDER directory is that it does not exist until the DVD is mounted so whoever creates it sets the permissions. The name DVD_RECORDER is the volume name of the DVD. I'm not sure how the DVD can itself have permissions attributed to it though. I will attempt to discover the right place to progress this issue. Stuart -- Website: http://www.stella-maris.org.uk or: http://www.broadstairs.org