linux-ext4 - Re: [Resubmit][PATCH 5/5] Secure Deletion and Trash-Bin Support for Ext4

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Message-Id: <20070225023356.ecd53f65.akpm@linux-foundation.org>
Date:	Sun, 25 Feb 2007 02:33:56 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Dave Kleikamp <shaggy@...ux.vnet.ibm.com>
Cc:	harry@...sunysb.edu, linux-ext4@...r.kernel.org, ezk@...sunysb.edu,
	kolya@...sunysb.edu
Subject: Re: [Resubmit][PATCH 5/5] Secure Deletion and Trash-Bin Support for
 Ext4

> On Wed, 31 Jan 2007 11:11:10 -0600 Dave Kleikamp <shaggy@...ux.vnet.ibm.com> wrote:
> Have you considered putting ALL of the function in the vfs layer?

Yes, I think that's where it should be implemented.

I suspect we'll run into problems with the .trash/<uid> thing.  What directory
do we put .trash in?  The top-level of the mountpoint?   The user might not
be able to access that if he's in a chroot.  And UIDs are now per-nsproxy
things - UIDs are already per-uid-namespace things. So we can have two or more
different users using UID 42.

It all need to be thrashed out with the containerisation and VFS guys.
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