From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756951Ab1DMSbP (ORCPT ); Wed, 13 Apr 2011 14:31:15 -0400 Received: from mail-ww0-f44.google.com ([74.125.82.44]:47086 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755893Ab1DMSbN (ORCPT ); Wed, 13 Apr 2011 14:31:13 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=u3nZoXDG20PdGsbGRKPK1HEwYeHACrJuxNzH/3/BDVuqPKrJjeqlUpa+PhIzz71t8H oKkMKQ7TArm40iwCCHLSI6DLlT70udL01oH1KYHmFftv83iTtvXgUc3VYx8aj8BRIYyr Erk6FtSUzjinU+MZJev++pPn95sWbTp5d04LY= Message-ID: <4DA5EBEC.10807@gmail.com> Date: Wed, 13 Apr 2011 14:31:08 -0400 From: Ric Wheeler User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.15) Gecko/20110403 Fedora/3.1.9-6.fc15 Thunderbird/3.1.9 MIME-Version: 1.0 To: Marco Stornelli CC: Linux FS Devel , Linux Kernel Subject: Re: Secure file deletion option question References: <4DA5E20E.4070904@gmail.com> In-Reply-To: <4DA5E20E.4070904@gmail.com> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 04/13/2011 01:49 PM, Marco Stornelli wrote: > Hi all, > > I don't see any fs implements that feature. The flag FS_SECRM_FL seems never > used with the exception of some define in some fs. Is there a motivation for > this? It seems a good option to me. > > Marco I think that most secure deletion code is done from user space, which can deal with odd storage types and so on. Just deleting and overwriting the blocks with zero data is not sufficient for some needs. Having user space tools deal with the myriad of ways that it could be done keeps the policy out of the kernel... Ric