bytebug@dhw68k.cts.com (Roger L. Long) (05/29/88)
[186: PBLock/UnLockRange]
The File Manager chapter of Inside Macintosh Volume IV discusses
the file range locking calls PBLockRange and PBUnlockRange.
Unfortunately, it does not mention the fact that these calls are
currently only properly implemented for shared volumes (i.e.
AppleShare, TOPS). Calling PBLockRange or PBUnlockRange currently
has absolutely no effect for local HFS (or MFS) volumes.
As an aside, the File Manager chapter of Inside Macintosh Volume
V discusses several other calls which are available for accessing
(or restricting access to) files on shared volumes.
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