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Date:      Thu, 23 Jun 2005 23:03:13 +0200
From:      Marius Strobl <marius@alchemy.franken.de>
To:        Gregg Cooper <bsdcrank@squbes.com>
Cc:        =?iso-8859-1?Q?Dag-Erling_Sm=F8rgrav?= <des@des.no>, Scott Long <scottl@samsco.org>, freebsd-hackers@freebsd.org
Subject:   Re: Duplicate inodes in 5.4-RELEASE-i386-disc1.iso
Message-ID:  <20050623230313.D80563@newtrinity.zeist.de>
In-Reply-To: <42BAEA23.70802@squbes.com>; from bsdcrank@squbes.com on Thu, Jun 23, 2005 at 12:58:11PM -0400
References:  <42BAC058.3040603@squbes.com> <42BAC1CB.30402@samsco.org> <86mzphcc0z.fsf@xps.des.no> <42BAEA23.70802@squbes.com>

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On Thu, Jun 23, 2005 at 12:58:11PM -0400, Gregg Cooper wrote:
> Dag-Erling Smørgrav wrote:
> 
> >Scott Long <scottl@samsco.org> writes:
> >  
> >
> >>Gregg Cooper wrote:
> >>    
> >>
> >>>15005 -r--r--r--  2 root  wheel      0 May  8 03:05 dumpdates
> >>>15005 -r--r--r--  2 root  wheel    142 May  8 03:05 fbtab
> >>>83266 -r--r--r--  2 root  wheel     0 May  8 03:01 locale
> >>>83266 -r--r--r--  2 root  wheel    31 May  8 03:01 mm.tmac
> >>>83269 -r--r--r--  2 root  wheel     0 May  8 03:01 se_locale
> >>>83269 -r--r--r--  2 root  wheel    97 May  8 03:01 se_ms.cov
> >>>99056 -r--r--r--  2 root  wheel     0 May  8 03:05 utmp
> >>>99056 -r--r--r--  2 root  wheel  18425 May  8 03:04 Makefile.dist
> >>>      
> >>>
> >>Maybe it's a bug in mkisofs?
> >>    
> >>
> >
> >ISO 9660 filesystems donn't have inode numbers.  The cd9660 code fakes
> >them based on the location of each file's contents.  This model breaks
> >down for empty files, which have no contents and thus no meaningful
> >location.  Apparently, mkisofs simply keeps track of the last extent
> >written and uses that for the location of the next file regardless of
> >whether it actually has any contents, so empty files get the same
> >inode number as the previous non-empty file.
> >
> >The attached patch will make mkisofs assign the lowest valid non-zero
> >address to all empty files.  They will therefore appear to be hard
> >links to eachother, but not to random non-empty files.
> >
> >DES
> >  
> >
> Scott: Thanks for the Makefile snippet.
> 
> DES: So fast - thanks! You provided a solution in less time than I spent
> scratching my head ...
> 
> marius: As port maintainer, can you shepherd this change into the
> cdrtools project?
> 

Please run it through the author of cdrtools first (Joerg Schilling
<schilling@fokus.fraunhofer.de>). If he thinks it's the right thing
to do I'm happy to add it to the port.

Marius




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