From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pat LaVarre Subject: Re: [PATCH] mount -w of dvd+rw etc. in vanilla 2.6 Date: 04 Sep 2003 16:36:02 -0600 Sender: linux-kernel-owner@vger.kernel.org Message-ID: <1062714962.5959.17.camel@lintel> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: To: linux-scsi@vger.kernel.org Cc: linux-kernel@vger.kernel.org List-Id: linux-scsi@vger.kernel.org > mount -w -t udf works with my dvd-ram ... > mistakenly sees my dvd+rw as read-only ... Besides that Andy Polyakov patch for mount -w of dvd+rw, the web has Jens Axboe patches for mount -w of cd-rw, via the udf faq (Not via the udftools faq): http://sourceforge.net/projects/linux-udf/ udf-0.9.7.tar.gz FAQ http://w1.894.telia.com/~u89404340/patches/packet/ --- >>From these two clues, kindly offline people have identified the Four fragments of kernel source that cooperate to conclude erroneously that dvd+rw etc. are not writable: 1) drivers/scsi/sr.c understands only the CDC_DVD_RAM profile of the seven standard mmc "writable" device "profile"s, because sr.c neglects to look beyond the "Capabilities" mode page x2a i.e. does not look beyond the mmc 1 standard of 1997. Ansi did not publish an op x46 Get Configuration standard until the mmc 2 of 1999. 2) include/scsi/scsi.h does not yet #define GET_CONFIGURATION 0x46. 3) drivers/cdrom/cdrom.c also understands only CDC_DVD_RAM: cdrom.c erroneously claims all mmc profiles except CDC_DVD_RAM are not FMODE_WRITE-able. 4) include/linux/cdrom.h names only CDC_DVD_RAM. --- Anyone have an idea of how best to patch this? I've seen a few linux-2.6.0-test4/ and linux-2.4.22/ alternatives mostly work. Anyone interested in evaluating some of them? Pat LaVarre