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From: dee@XAIT.Xerox.COM (Donald Eastlake)
Newsgroups: comp.sys.mac.programmer,comp.sys.mac
Subject: Re: Checking for MF (was Re: Need some MF help)
Message-ID: <43550@XAIT.Xerox.COM>
Date: 7 Apr 89 20:43:25 GMT
References: <1562@neoucom.UUCP> <28689@ucbvax.BERKELEY.EDU> <1179@internal.Apple.COM> <43465@XAIT.Xerox.COM> <1235@internal.Apple.COM>
Reply-To: dee@XAIT.Xerox.COM (Donald Eastlake)
Distribution: comp.sys.mac.programmer,comp.sys.mac
Organization: Xerox Advanced Information Technology, Cambridge, MA
Lines: 25

In article <1235@internal.Apple.COM> goldman@apple.com (Phil Goldman) writes:
>In article <43465@XAIT.Xerox.COM> dee@XAIT.Xerox.COM (Donald Eastlake) writes:
>> My program allows a user to Unmount volumes.  Unfortunately, there is a bug
>> in MultiFinder, which is supposed to close the DeskTop file when an
>> application does an Unmount, where it fails to do this on flat file
>> system volumes and you get a busy error message.  ...
>This is a bug, albeit a minor one, in the system.  The problem is that it 
>is extremely difficult to find the Desktop file on an MFS disk, because 
>the FCB does not contain a name.  There are gross ways to do it, but the 
>feeling was that it was unimportant since there is no reason to use MFS 
>disks in any case.

I don't know how the current kludge for unmounting volumes works but why do
you need a name?  TN 180 clearly says that MF asks the finder to close
the DeskTop file.  If the Finder is what opened it and keeps it opne how
can it possibly be any problem for it to close it???

There will be MFS disks around for MANY YEARS.  Ignoring them is a bad idea.

(My program even makes a try at running under the 64K ROM although many of
its features are disabled.)
-- 
	+1 617-969-9570		Donald E. Eastlake, III
	ARPA: dee@XAIT.Xerox.COM    usenet:  {cbosg,decvax,linus}!cca!dee
	AppleLink:  D2002	Box N, MIT Branch PO, Cambridge, MA 02139 USA