Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!pasteur!ucbvax!asylum.sf.ca.us!romkey
From: romkey@asylum.sf.ca.us (John Romkey)
Newsgroups: comp.protocols.tcp-ip.ibmpc
Subject: Public Domain NFS
Message-ID: <8812170248.AA03407@asylum.sf.ca.us>
Date: 17 Dec 88 10:48:27 GMT
References: <8812161212.aa12957@Louie.UDEL.EDU>
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: romkey@asylum.sf.ca.us
Organization: The Internet
Lines: 14

Yeah, unfortunately the worst part of an NFS implementation on an IBM
PC is writing the redirector, which has to exactly match DOS. You do
this either by using misinformation about undocumented hooks into and
from DOS or by catching int 21 (DOS system call interrupt; BIOS only
handles raw disk accesses, not the filesystem) and exactly emulating
DOS including a number of undocumented DOS system calls that
nasty programs like, oh, say, Microsoft C perform.

Then you have to map non-DOS conformant filenames to something
DOS-like (upper case, 8 characters optional . 3 characters).

Next to this, I expect the implementation of the NFS protocol itself
to be almost a non-issue.
			- john