linux-kernel - Re: [PATCH 1/3] ext2/3/4: enable "undeletable" file attribute.

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Date:	Wed, 22 Nov 2006 01:11:35 +0000
From:	ilmari@...ari.org (Dagfinn Ilmari Mannsåker)
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org, sct@...hat.com,
	James Hunt <james@...eshunt.org.uk>
Subject: Re: [PATCH 1/3] ext2/3/4: enable "undeletable" file attribute.

Arnd Bergmann <arnd@...db.de> writes:
> On Tuesday 21 November 2006 23:16, James Hunt wrote:
> > ... it's not honoured by the kernel:
> > 
> >   > rm /tmp/wibble             # yikes! this should fail!!
>
> I always thought of the term 'undeletable' to mean that you can
> undelete the file (restore it) after it has been deleted. Of course,
> this is not implemented either, but it means something very different
> than what your patch does.

That is indeed what the documented (but not implemented) meaning is.
>From chattr(1):

|       When a file with the ‘u’ attribute set is deleted, its contents
|       are saved. This allows the user to ask for its undeletion.

So the meaning is undelete-able, not un-deletable.

-- 
ilmari
"A disappointingly low fraction of the human race is,
 at any given time, on fire." - Stig Sandbeck Mathisen
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