Date: Thu, 18 Nov 1999 15:00:27 -0700 From: Wes Peters <wes@softweyr.com> To: trouble@netquick.net Cc: Barrett Richardson <barrett@phoenix.aye.net>, David G Andersen <danderse@cs.utah.edu>, freebsd-security@FreeBSD.ORG, Greg Lehey <grog@lemis.com> Subject: Re: secure filesystem wiping Message-ID: <383476FB.CAAB1A0E@softweyr.com> References: <Pine.BSF.4.01.9911172336080.5008-100000@phoenix.aye.net> <3833923C.10A7208F@netquick.net>
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TrouBle wrote:
>
> i appreciate all the help, but this is not what im looking for... i want
> to WIPE freespace on the disk
>
> obliterate only wipes the one file you specify.. i want to wipe all the
> free space on the disk, without damaging good intact files on it, linux
> has a progrtam called wipe that does this, now ill ask again is there
> something similiar for freebsd
You've got me thinking about this now, it would be a neat tool to run over
your disks in daily or weekly. It would be pretty straightforward to run
over a slice on block at a time, checking to see if it is allocated and
obliterating the blocks that are not. Problem is, I don't know how you
could do this on a mounted filesystem; is it possible to lock the file
allocation long enough to zap the block?
Pointers to helpful filesystem hackery and/or knowlegable hackers appreciated.
--
"Where am I, and what am I doing in this handbasket?"
Wes Peters Softweyr LLC
wes@softweyr.com http://softweyr.com/
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