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June 4, 1990
Ms. Claire LeDonne Technology Licensing Office 2320 Shattuck Avenue University of California at Berkeley Berkeley, CA 94704 Peter M. C. Choy Deputy General Counsel Technology Law Group Sun Microsystems 2550 Garcia Avenue Mountain View, CA 94043-1100Dear Mr. Choy,
I have discussed the issues raised in your letter of April 16, 1990 with Dr. Marshall Kirk McKusick, who heads the operating system and networking research for the \s-1UNIX\s0 project in the Computer Science Division of the University of California, Berkeley, known as the Computer Systems Research Group (\s-1CSRG\s0). Dr. McKusick informs me that he has been personally involved in coordinating the development of \s-1NFS\s0 for the Berkeley Software Distribution, \s-1BSD\s0.
The group is well aware of the issues of code contamination, as they have had to deal with it for years. Further, their high profile makes it additionally important that they have strict procedures for code development and detailed documentation of all outside sources of code.
The implementation of NFS that has been incorporated in \s-1BSD\s0 was developed by Rick Macklem at the University of Guelph near Toronto, Canada. \s-1CSRG\s0 has on file a contributed software agreement from the University of Guelph stating that the implementation of \s-1NFS\s0 that Guelph has made available to \s-1CSRG\s0 contains no proprietary code of any company. The code was developed entirely from the specifications that were placed in the public-domain by Sun. As a further assurance that none of Sun's proprietary code was incorporated into the contributed \s-1NFS\s0 implementation, Rick Macklem has told us that the University of Guelph does not have a Sun source license.
If I can be of any further assistance in clarifying these issues, please feel free to contact me. Sincerely, Claire LeDonne
cc: Dr. Marshall Kirk McKusick, Mike Karels CSRG