Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!ncar!gatech!udel!rochester!cornell!uw-beaver!mit-eddie!bbn!uwmcsd1!marque!gryphon!crash!jeh
From: jeh@crash.cts.com (Jamie Hanrahan)
Newsgroups: comp.os.vms
Subject: Re: Detecting file creation
Message-ID: <2944@crash.cts.com>
Date: 9 May 88 07:16:53 GMT
References: <272@sdrc.UUCP>
Reply-To: jeh@crash.CTS.COM (Jamie Hanrahan)
Organization: Crash TS, El Cajon, CA
Lines: 20
Summary: Here's part of an idea, maybe


(Larry Jones wants to be notified when someone creates a file in a 
particular directory.)

I don't have The Answer, but I might have a Clue.  When the XQP wants to
create a file it takes out a lock so that it can write on the directory
in question.  This lock has a name which is derived in a reproducible way. 
It seems to me that if you take out a lock on the directory you should
be able to coerce the lock manager into telling you when someone else 
(the XQP) wants the lock.  You then release it, wait a reasonable time, 
and check the directory for a file to work on.  

This is definitely in the category of "Partly Baked Ideas"; I wouldn't
burden the net with it if I'd seen a more thoroughly cooked response.  
Perhaps someone else can pick it up from here and fill in the details.  
Or, I could ask some of the Files-11 experts at DECUS next week.  Yeah,
that's the ticket!  

Good luck...

	--- Jamie Hanrahan