From owner-freebsd-hackers@FreeBSD.ORG  Mon Jun 27 09:41:50 2005
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Date: Mon, 27 Jun 2005 10:45:35 +0100 (BST)
From: Robert Watson <rwatson@FreeBSD.org>
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To: Jeremie Le Hen <jeremie@le-hen.org>
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Cc: Maslan <maslanbsd@gmail.com>, FreeBSD Hackers <freebsd-hackers@freebsd.org>
Subject: Re: GmailFS
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On Mon, 27 Jun 2005, Jeremie Le Hen wrote:

>> hello guys
>> can not the FUSE http://fuse.sourceforge.net ported to freebsd ?
>> it would be nice to test the gmail fs on freebsd
>> http://richard.jones.name/google-hacks/gmail-filesystem/gmail-filesystem.html
>
> AFAIK, this is not available with FreeBSD.  There is no user level 
> filesystem support.  However, NetBSD announced [1] that one of their 
> project for Google Summer of Code is to implement userspace file system 
> hooks.  This may be ported on FreeBSD one day.

Arla's XFS code actually does quite a good job of providing a userlevel 
file system framework on FreeBSD, and the Coda kernel module also lets you 
implement userlevel file systems.  I have a slight preference for the Arla 
XFS implementation as it's more general-purpose.  I've previously used 
Arla's framework to write part of a user level tertiary file system 
implementation.

Robert N M Watson