Date: Thu, 23 Jun 2005 13:37:25 -0400 From: John Baldwin <jhb@FreeBSD.org> To: freebsd-hackers@freebsd.org Cc: Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?= <des@des.no>, Scott Long <scottl@samsco.org>, Gregg Cooper <bsdcrank@squbes.com> Subject: Re: Duplicate inodes in 5.4-RELEASE-i386-disc1.iso Message-ID: <200506231337.27239.jhb@FreeBSD.org> In-Reply-To: <86mzphcc0z.fsf@xps.des.no> References: <42BAC058.3040603@squbes.com> <42BAC1CB.30402@samsco.org> <86mzphcc0z.fsf@xps.des.no>
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On Thursday 23 June 2005 11:45 am, Dag-Erling Sm=F8rgrav 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. Even if mkisofs is patched this change isn't a bug in mkisofs. It's really= a=20 bug in our iso9660 filesystem. :( =2D-=20 John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" =3D http://www.FreeBSD.org
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