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From: shore@mtxinu.COM (Melinda Shore)
Newsgroups: comp.unix.questions,comp.sys.next
Subject: Re: MACH kernel - source become pd?
Keywords: MACH
Message-ID: <1379@mtxinu.UUCP>
Date: 24 Oct 90 00:55:29 GMT
References: <450@dill.UUCP> <26980@mimsy.umd.edu> <1369@mtxinu.UUCP> <3180@unisoft.UUCP>
Reply-To: shore@mtxinu.com (Melinda Shore)
Organization: mt Xinu, Berkeley
Lines: 22

In article <3180@unisoft.UUCP> greywolf@unisoft.UUCP (The Grey Wolf) writes:
>I keep seeing references to the ufs; who technically owns the concepts
>behind the original Berkeley FFS?  

Berkeley does, but there are still snippets of AT&T code in there,
some of which is non-trivial (cache management).  I could be wrong,
but I do understand that once the buffer management is thrown away
and rebuilt using 4.x vm, it will be free.  Someone from CSRG or who 
at least has stronger ties there could give you a clearer idea of
what they're doing and when to expect it.

>And couldn't some other schmo just as
>easily come up with a scheme for a "Virtual File System" that wouldn't 
>infringe upon Sun's vnode filesystem?

Done, at Guelph University working together with CSRG.  Dunno about
availability right now, but you can probably expect it as part of
4.4.  It's a PD implementation of NFS.  The vnode format is different,
so don't expect it to slide right in.
-- 
Melinda Shore                                 shore@mtxinu.com
mt Xinu                              ..!uunet!mtxinu.com!shore