xfs
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Re: XFS information leak during crash

To: Nathan Scott <nathans@xxxxxxx>
Subject: Re: XFS information leak during crash
From: Jan Kasprzak <kas@xxxxxxxxxx>
Date: Thu, 3 Nov 2005 01:03:17 +0100
Cc: linux-kernel@xxxxxxxxxxxxxxx, linux-xfs@xxxxxxxxxxx
In-reply-to: <20051103104956.B6081538@wobbly.melbourne.sgi.com>
References: <20051102212722.GC6759@fi.muni.cz> <20051103101107.O6239737@wobbly.melbourne.sgi.com> <20051102233629.GD6759@fi.muni.cz> <20051103104956.B6081538@wobbly.melbourne.sgi.com>
Sender: linux-xfs-bounce@xxxxxxxxxxx
User-agent: Mutt/1.4.1i
Nathan Scott wrote:
: XFS behaves as most filesystems do and
: will write over the top of existing data.

        OK, thanks for the clarification.

: XFS also rewrites files in-place.  You will never get someone else's
: current data (that would be metadata corruption...),

        Of course.

: it would only
: ever be uninitialised, previously-free space.

        Yes, but an old data from previously deleted files
(sendmail's temporary files, vim save files, etc) may contain
a sensitive information.

-Y.

-- 
| Jan "Yenya" Kasprzak  <kas at {fi.muni.cz - work | yenya.net - private}> |
| GPG: ID 1024/D3498839      Fingerprint 0D99A7FB206605D7 8B35FCDE05B18A5E |
| http://www.fi.muni.cz/~kas/    Journal: http://www.fi.muni.cz/~kas/blog/ |
> Specs are a basis for _talking_about_ things. But they are _not_ a basis <
> for implementing software.                              --Linus Torvalds <


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