linux-kernel - Re: [PATCH 1/5] WIP: Add syscall unlinkat

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Date:	Tue, 03 Feb 2015 13:48:56 +0100
From:	Alexander Holler <holler@...oftware.de>
To:	Al Viro <viro@...IV.linux.org.uk>
CC:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] WIP: Add syscall unlinkat_s (currently x86* only)

Am 03.02.2015 um 10:23 schrieb Alexander Holler:

> Or to give another more common example: If you delete your contact list,
> I likely might find again by just searching for 0x6f726956 at the device
> level (assuming you've stored a contact in that list with the same
> surname as yours.
>
> And, because I've only mentioned in a different thread, now think at the
> problem that nowadays storage is often fixed (soldered) to devices which
> don't offer a way to delete the whole storage. You might have luck if
> the contact list in question was stored in some encrypted part, but that
> presumes that the key for that encrypted part isn't somehow stored on
> the same device too. Which unfortunately isn't always the case (maybe
> because of usability). And ...
>
> That's why I think filesystems should offer a way to really delete
> files. Most people would be happy, even if filesystems won't delete
> stuff at military security levels and would disregard all the cases when
> they couldn't make sure that stuff is really deleted.
>
> To conclude, most people would be already happy if the most trivial case
> would be handled right and not just by marking files as deleted but
> leaving the contents intact.


Maybe I should rename me to Quijote, switch back to pen and paper and
should start to raise carrier pigeons. ;)

E.g. my parents are stull successfully using contact lists on paper. 
These are still more readable, easier to handle and smaller than any 
available electronic replacement. And they have absolutely no problem to 
destroy an old one when they replace it with a new one.

Regards,

Alexander Holler
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