From john.mccash@motorola.com Wed Dec 30 18:14:02 2009 Received: from mail128.messagelabs.com ([216.82.250.131]) by stoneboat.aleph1.co.uk with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.69) (envelope-from ) id 1NQ33V-0005xD-8c for yaffs@lists.aleph1.co.uk; Wed, 30 Dec 2009 18:14:02 +0000 X-VirusChecked: Checked X-Env-Sender: john.mccash@motorola.com X-Msg-Ref: server-11.tower-128.messagelabs.com!1262196821!7414190!1 X-StarScan-Version: 6.2.4; banners=-,-,- X-Originating-IP: [136.182.1.15] Received: (qmail 26007 invoked from network); 30 Dec 2009 18:13:41 -0000 Received: from motgate5.mot.com (HELO motgate5.mot.com) (136.182.1.15) by server-11.tower-128.messagelabs.com with DHE-RSA-AES256-SHA encrypted SMTP; 30 Dec 2009 18:13:41 -0000 Received: from il27exr04.cig.mot.com ([10.17.196.73]) by motgate5.mot.com (8.14.3/8.14.3) with ESMTP id nBUIDeGG028714 for ; Wed, 30 Dec 2009 11:13:40 -0700 (MST) Received: from il27vts02.mot.com (il27vts02.cig.mot.com [10.17.196.86]) by il27exr04.cig.mot.com (8.13.1/Vontu) with SMTP id nBUIDeP6017320 for ; Wed, 30 Dec 2009 12:13:40 -0600 (CST) Received: from de01exm71.ds.mot.com (de01exm71.am.mot.com [10.176.8.27]) by il27exr04.cig.mot.com (8.13.1/8.13.0) with ESMTP id nBUIDeFP017308 for ; Wed, 30 Dec 2009 12:13:40 -0600 (CST) X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Date: Wed, 30 Dec 2009 13:13:18 -0500 Message-ID: In-Reply-To: <200912081055.16244.manningc2@actrix.gen.nz> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [Yaffs] Access to files on a YAFFS2 image thread-index: Acp3iAK61kZfhhR+QGGQBxxhHpOTIgR8fRRA References: <200912070918.13634.manningc2@actrix.gen.nz> <200912081055.16244.manningc2@actrix.gen.nz> From: "McCash John-GKJN37" To: "Charles Manning" , X-CFilter-Loop: Reflected X-SA-Exim-Connect-IP: 216.82.250.131 X-SA-Exim-Mail-From: john.mccash@motorola.com X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on stoneboat.aleph1.co.uk X-Spam-Level: X-Spam-Status: No, score=-6.6 required=4.5 tests=AWL,BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.2.5 X-SA-Exim-Version: 4.2.1 (built Wed, 25 Jun 2008 17:14:11 +0000) X-SA-Exim-Scanned: Yes (on stoneboat.aleph1.co.uk) Subject: Re: [Yaffs] Access to files on a YAFFS2 image X-BeenThere: yaffs@lists.aleph1.co.uk X-Mailman-Version: 2.1.11 Precedence: list List-Id: Discussion of YAFFS NAND flash filesystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Dec 2009 18:14:03 -0000 Charles, I'm making some progress on this project. I now have a utility that appears to dump the yaffs2 filesystem, including the OOB area. I'm even able to use nandwrite to upload this dump to an emulated flash device under linux, but when I subsequently mount the device, I see nothing but a lost+found folder. The Android device I'm dumping the filesystem from has kernel version 2.6.27, and the following YAFFS settings: CONFIG_YAFFS_FS=3Dy CONFIG_YAFFS_YAFFS1=3Dy # CONFIG_YAFFS_9BYTE_TAGS is not set # CONFIG_YAFFS_DOES_ECC is not set CONFIG_YAFFS_YAFFS2=3Dy CONFIG_YAFFS_AUTO_YAFFS2=3Dy # CONFIG_YAFFS_DISABLE_LAZY_LOAD is not set # CONFIG_YAFFS_DISABLE_WIDE_TNODES is not set # CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED is not set CONFIG_YAFFS_SHORT_NAMES_IN_RAM=3Dy The system I'm attempting to mount the image on has kernel version 2.6.28, and the following YAFFS settings: CONFIG_YAFFS_FS=3Dm CONFIG_YAFFS_YAFFS1=3Dy # CONFIG_YAFFS_9BYTE_TAGS is not set # CONFIG_YAFFS_DOES_ECC is not set CONFIG_YAFFS_YAFFS2=3Dy CONFIG_YAFFS_AUTO_YAFFS2=3Dy # CONFIG_YAFFS_DISABLE_TAGS_ECC is not set # CONFIG_YAFFS_DISABLE_LAZY_LOAD is not set # CONFIG_YAFFS_DISABLE_WIDE_TNODES is not set # CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED is not set CONFIG_YAFFS_SHORT_NAMES_IN_RAM=3Dy Note that the CONFIG_YAFFS_DISABLE_TAGS_ECC option was added between these versions, and is not set, per the associated configuration suggestion. Should this be working? If not, is there some option I can apply to the mount command that might help? I see from the source that several are supported, though I haven't found documentation for them. Also, should I be using the -n option on nandwrite, to skip the ecc information? Thanks again John