From owner-freebsd-hackers@FreeBSD.ORG  Tue Feb  1 13:35:48 2005
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Date: Tue, 01 Feb 2005 14:35:03 +0100
From: Ivan Voras <ivoras@fer.hr>
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To: Deomid Ryabkov <myself@rojer.pp.ru>, hackers@freebsd.org
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Subject: Re: Question: tracking filesystem changes?
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Deomid Ryabkov wrote:

> This could be a custom filesystem wrapper for UFS that would report name 
> of the file/directory being changed.

Couldn't you use kqueue system to monitor the directory-file?