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From: Mel <fbsd.questions@rachie.is-a-geek.net>
To: freebsd-questions@freebsd.org,
 John Conover <conover@rahul.net>
Date: Thu, 3 Apr 2008 16:11:59 +0200
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Subject: Re: F_NOTIFY in fcntl(2)?
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On Thursday 03 April 2008 12:25:55 John Conover wrote:
> Does freebsd support the F_NOTIFY, (i.e., File and directory change
> notification,) in fcntl(2)?
>
> I get that it doesn't, but its an old 5X version, and I might have to
> upgrade.

Nope, this is a GNU extension to fcntl. File change notifications are done 
with EVFILT_VNODE using kqueue(2). Directory changes have no interface that I 
know of. You might wanna take a look at how devel/gamin handles this, 
specifically the kqueue implementation.

-- 
Mel

Problem with today's modular software: they start with the modules
    and never get to the software part.