Duplicate inodes in 5.4-RELEASE-i386-disc1.iso

Marius Strobl marius at alchemy.franken.de
Thu Jun 23 21:03:28 GMT 2005


On Thu, Jun 23, 2005 at 12:58:11PM -0400, Gregg Cooper wrote:
> Dag-Erling Smørgrav wrote:
> 
> >Scott Long <scottl at 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 at 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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