Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!apple!keith
From: keith@Apple.COM (Keith Rollin)
Newsgroups: comp.sys.mac.programmer
Subject: Re: System 7 File Manager & AppleShare Volumes
Keywords: spam PBGetVolMountSize spam File Manager spam AppleShare spam
Message-ID: <53898@apple.Apple.COM>
Date: 12 Jun 91 00:51:02 GMT
References: <1991Jun11.054037.10499@dartvax.dartmouth.edu>
Organization: Apple Computer Inc., Cupertino, CA
Lines: 27

In article <1991Jun11.054037.10499@dartvax.dartmouth.edu> llama@eleazar.dartmouth.edu (Joe Francis) writes:
>There is an error in IM VI's  description of the File Manager routine
>PBGetVolMountSize (Chapter: 25, Page: 48).
>
>In the description of the parameter block it states that ioBuffer is a
>pointer to long.  In fact, it is treated by the File Manager as a pointer
>to short.  If you use the "size" it returns as a long and try to allocate
>storage for that "size", you will wind up trying to allocate $A7xxxx bytes
>instead of $A7 bytes, which is the size of a volume mounting record for an
>AppleShare volume (currently).
>
>Please let me know if I'm full of crap; and I'll take this opportunity to
>say thanks to the DTS folks who frequent this group and take the time to
>set us straight.

I think you are right on this. I trapped on the call, and noticed that
the client treated it as a pointer to a short as well.


P.S. I'm not a DTS folk, but I play one on TV.

-- 
------------------------------------------------------------------------------
Keith Rollin  ---  Apple Computer, Inc. 
INTERNET: keith@apple.com
    UUCP: {decwrl, hoptoad, nsc, sun, amdahl}!apple!keith
"But where the senses fail us, reason must step in."  - Galileo