[AFS3-std] Re: Copyright, internet-drafts and .xg files

[Jeffrey Altman]

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On 2/24/2010 2:54 PM, Buhrmaster, Gary wrote:
>> I'm not sure if this is a valid analogy, but this reminds me of how
>> (I've been told) IBM PCs in the 80s were reverse-engineered by IBM-clo=
ne
>> makers. They'd have someone look at some BIOS microcode or something,
>> and write a spec from it.=20
>
> IANAL
>
> The network protocol equivalent (and what someone told me the
> SAMBA team did), to have a "clean room" implementation is to
> have one person do a tcpdump of the wire protocols, figure out
> the transactions bits/bytes, write it down as a specification,
> and someone else write an equivalent implementation.  Test,
> and repeat as needed to get everything working.  You also
> have to document the process to be able to demonstrate later
> that you did not use insider information.
>
> For OpenAFS, almost all of the interested parties are already
> "contaminated" by having seen the IBM code itself, so would
> not likely meet a "clean room" reimplementation test.
>
> And, in any case, patents (in the US at least), can still
> encumber independent implementations (it is the invention
> that counts for patents).  Perhaps "In re Bilski" will change
> all that for software, but that is still a pending case.
>
> IBM learned that lesson for PCs with the PS/2 MCA bus (patents
> on everything, and (just by accident) specified a card size
> which required fab capability to get enough stuff on the board
> (no more simple 74xxx logic gates on the card like you could
> do with the ISA cards), raising the barrier to entry for a few
> years).
>
> Gary

Gary:

Patents are less of a concern for OpenAFS in this case.  IBM contributed
the use of any applicable
patent as part of the IBM Public License 1.0.

Jeffrey Altman



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