HFS volume structure

Article View: comp.sys.mac

Article #7192

#7192

From: Greg Hinton
Date: Thu, 26 Oct 1989 20:59

17 lines
1093 bytes

I'm trying to decipher the on-disk structure of HFS and have gotten
just enough information from _Inside Mac_ to be hazardous.  I'm hoping
some of you gurus out there can supply the missing pieces of the puzzle.

When I examine the Extents Tree and Catalog Tree, the first block never
conforms to the structure detailed in _Inside Mac_.  I'm guessing that
the first block is not a normal B*-tree node, but rather contains
summary information about the tree, such as pointer to root node, pointer
to free nodes, etc.  Am I right?  What is the structure of that first
block?

Thanks in advance.

-- 
Greg Hinton
DOMAIN: hinton@netcom.uucp
UUCP: uunet!apple!netcom!hinton

Technical Details

Message-ID: <3411@netcom.UUCP>

Path:

arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!usc!apple!vsi1!teraida!netcom!hinton

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!usc!apple!vsi1!teraida!netcom!hinton
From: hinton@netcom.UUCP (Greg Hinton)
Newsgroups: comp.sys.mac
Subject: HFS volume structure
Message-ID: <3411@netcom.UUCP>
Date: 26 Oct 89 20:59:42 GMT
Reply-To: hinton@netcom.UUCP (Greg Hinton)
Organization: NetCom Public Access Unix -- San Jose, CA
Lines: 17