From:	Nate Eldredge <neldredge AT hmc DOT edu>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Detecting File in Use?
Date:	24 Apr 2001 16:34:44 -0700
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Nate Eldredge <neldredge AT hmc DOT edu> writes:

> richard AT stardate DOT bc DOT ca (Richard Sanders) writes:
> 
> > >How does one know if a file is ALREADY in USE by
> > >some application BEFORE any actual attempt to open
> > >or access that file?
> > 
> > Check out the access(); function.  
> 
> That has nothing to do with it.
> 
> The correct answer is: you can't reliably find out.  lsof would tell
> you whether the file was open, but that could change before you get
> around to actually doing something with it.
> 
> If you need to enforce some kind of sharing between applications,
> you'll need to use file locking in both of them.

Sorry, forgot which newsgroup this was.  (I was thinking of Unix.)  As
far as DJGPP goes, I don't know how you find out.  I don't *think*
access() will do it, but I could be wrong.

-- 

Nate Eldredge
neldredge AT hmc DOT edu

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