Path: utzoo!attcan!uunet!snorkelwacker!apple!agate!sandstorm.Berkeley.EDU!jjl
From: jjl@sandstorm.Berkeley.EDU (Jason J. Lee)
Newsgroups: comp.sys.apple
Subject: Re: some IIGS toolbox programming questions
Keywords: backup bit
Message-ID: <1989Nov26.070313.24149@agate.berkeley.edu>
Date: 26 Nov 89 07:03:13 GMT
References: <14217@boulder.Colorado.EDU>
Sender: usenet@agate.berkeley.edu (USENET Administrator;;;;ZU44)
Reply-To: jjl@sandstorm.Berkeley.EDU (Jason J. Lee)
Organization: UC Berkeley
Lines: 14

In article <14217@boulder.Colorado.EDU> hartkopf@tramp.Colorado.EDU (Jeff Hartkopf) writes:
[a few questions I don't have answers to...]

>4)  In GS/OS, what is the backup bit of the access field of a file (folder?)
>    for?

If things haven't changed completely from ProDOS 8 to GS/OS, then the backup
bit should still be the flag that the system sets whenever a file has been
modified and needs backing up.  See Open-Apple page 3.96 for more details...
to clear the backup bit after a file has been backed-up, you put $20 in $BF95
(BUBIT) and call SET_FILE_INFO... or else call CLEAR_BACKUP_BIT from
ProDOS 16 (and GS/OS as well, I suppose).

jjl@ocf.berkeley.edu