linux-kernel - Re: [PATCH 3/5] WIP: fs: ext4: support unlinkat

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Message-ID: <54D0F977.3080608@ahsoftware.de>
Date:	Tue, 03 Feb 2015 17:38:15 +0100
From:	Alexander Holler <holler@...oftware.de>
To:	Lukáš Czerner <lczerner@...hat.com>
CC:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/5] WIP: fs: ext4: support unlinkat_s() for secure deletion
 of files

Am 03.02.2015 um 16:41 schrieb Lukáš Czerner:
> On Tue, 3 Feb 2015, Alexander Holler wrote:

>> I'm already spending a lot of time trying to convince the developers here,
>> that this a feature most people expect from any filesystem. And I've written
>> these patches, for which now, even after I've marked them with all kind of
>> "preliminary" terms, still get blamed.
>
> So, you'd be much happier if we just ignored your patches ? I am not
> sure you understand how this works. You spend time creating and
> posting patches and at least two people (including me) spent time
> reading and commenting on it, isn't that what you need ?

Also I've already given up, I feel the need to still answer at least that:

After thinking a bit about the problem I had the idea that a FS-wide 
switch like the one I've implemented might be a very easy way to 
implement something which would be enough for my needs (and maybe the 
needs of someone else). Then I've looked at the FAT sources because I 
know a bit about FAT and it seemed to me like one of the more easier 
places to test my aproach.

And it was. After around 3 hours I had something working which wiped 
files from FAT by overwriting them. Then I've spend 1-2 hours to add the 
syscall and add -s to rm and some days later and another 3 hours I had 
the same for working for ext4. That already almost covers all my needs, 
maybe I'll spend another few hours to look if it's that easy with BTRFS too.

So, because I've already had filed bugs #92261 and #92271 in the kernels 
bugzilla, I've posted that stuff. Nothing more nothing less.

> You have the attention to move this forward, so please take
> advantage of this.

Sorry, but I'm unable to spend all the necessary time to make this 
perfect in regard to whatever maintainers requesting. I'll posted these 
patches more as some thought-provoking impulse (proof of concept), and I 
failed obviously badly in marking them as such.

I'm sorry if I've wasted your time.

Regards,

Alexander Holler

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