From: Manish Katiyar Subject: Re: Help to edit inode content Date: Wed, 13 May 2009 09:44:50 +0530 Message-ID: References: <20aa8c370905120847j4b19175akbdcafc0db2004567@mail.gmail.com> <3e8340490905120856w62c6c5cexa247937bf7e84002@mail.gmail.com> <20aa8c370905120902o71ab9adflb8619e2a9ae343d0@mail.gmail.com> <20090512200310.GP3209@webber.adilger.int> <20aa8c370905122111x6bc80d4ave0c857fafd8d9e0a@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Andreas Dilger , Bryan Donlan , linux-kernel@vger.kernel.org, linux-ext4@vger.kernel.org To: ranjith kannikara Return-path: Received: from yx-out-2324.google.com ([74.125.44.30]:31043 "EHLO yx-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750703AbZEMEPJ convert rfc822-to-8bit (ORCPT ); Wed, 13 May 2009 00:15:09 -0400 In-Reply-To: <20aa8c370905122111x6bc80d4ave0c857fafd8d9e0a@mail.gmail.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Wed, May 13, 2009 at 9:41 AM, ranjith kannikara wrote: > On Wed, May 13, 2009 at 1:33 AM, Andreas Dilger wro= te: >> On May 12, 2009 =A021:32 +0530, ranjith kannikara wrote: >>> On Tue, May 12, 2009 at 9:26 PM, Bryan Donlan w= rote: >>> > On Tue, May 12, 2009 at 11:47 AM, ranjith kannikara >>> > wrote: >>> >> I am a computer science engineering student. We have started a p= roject >>> >> to make an application to recover deleted files from an ext3 >>> >> filesystem. For that we have a doubt . Can we edit the inode con= tent? >>> >> ie the recovery will be robust if we could edit the inode conten= ts and >>> >> give the pointer address manually or through a code. The inode i= s >>> >> being created in the kernel mode and is it possible to edit thos= e >>> >> contents if the code is allowed to have the kernel mode permissi= ons..? >>> >>> But we would like to know whether it is possible to edit the inode >>> because it will make the recovery easy and robust. ie he know the >>> details of the inode of the file which had been deleted is it possi= ble >>> to edit the content of that inode with the pointers of the deleted >>> file.? >> >> Are you asking whether it is possible to modify the on-disk structur= e >> of the ext3 inode? Generally that is NOT allowed because it will of >> course break all existing filesystems if not done with extreme care. >> >> Cheers, Andreas >> -- >> Andreas Dilger >> Sr. Staff Engineer, Lustre Group >> Sun Microsystems of Canada, Inc. >> >> > Hi, > Actually I was asking the same. whether it is possible to edit the > inode content of a disk or the image of a disk. Did you mean that it > is not possible at all. Is there any method to edit the inode content > and use the edited inode for a file, If we can ensure high care. > because such a method will be the most robust one in the recovery of > deleted file. Sorry , but it is still not clear to me whether you are trying to change the on-disk structure of the inode or just change the ondisk *contents* of some deleted inode to recover it. Can you give an example of what you are trying to do ? Thanks - Manish > > Regards > ranju. > > -- > http://www.ranjithkannikara.blogspot.com/ > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4"= in > the body of a message to majordomo@vger.kernel.org > More majordomo info at =A0http://vger.kernel.org/majordomo-info.html > --=20 Thanks - Manish -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html