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From: jim <jim.whitson@gmail.com>
Subject: Re: [9fans] Acme mailreader
Date: Thu, 16 Dec 2004 09:30:05 +0000
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
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On 16 Dec 2004, at 00:24, geoff@collyer.net wrote:

> OS X is in no sense a micro-kernel.  The OS X kernel is huge:
So I see. Much like NT being a 'micro-kernel' then?
> Also, /sys/src/cmd/upas/README is a little dated:
>
> 	--rw-rw-r-- M 5174 sys sys 1041 Dec 11  1999 README
>
Ahh.
> I'm not sure if it pre-dates upas/fs, but it describes how to port the
> parts of upas that don't rely on Plan 9 facilities (transport more
> than reading).  I ported Plan 9's upas back to Unix while at the labs
> (and also translated it into limbo), but some parts (e.g., upas/fs)
> didn't have an obvious implementation, other than painfully pretending
> to be an NFS server, at least at the time.
>
I see. The problem is in how to construct and present a filesystem on a 
unix
with no user mounting system?