Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!amdcad!sun!imagen!atari!portal!cup.portal.com!wert
From: wert@cup.portal.com (robert scott comer)
Newsgroups: comp.sys.mac.programmer
Subject: Re: VCB Blocks, Volume Ref#'s and other mysteries
Message-ID: <14889@cup.portal.com>
Date: 21 Feb 89 02:52:25 GMT
References: <1668@psu-cs.UUCP>
Organization: The Portal System (TM)
Lines: 9

io ref number confusion: probably you are being confused by working
directories and volume reference numbers. Working directories are a
hack to make non-hfs aware programs (most of them) work like they
did under the old flat file system. The GetVol system call returns a
WDRefNum which works like a vRefNum, except that it carries a directory
with it. StdFile returns these when you select a subdirectory on a
volume. Cute, huh?

scott out