Wanted: lockf system call source

[David Brand]

I am looking for a copy of the source to a /usr/group compatible implementation
of the lockf system call.  Is this available in the public domain?  If so, do I
need a Unix source license to look at it?  I am interested in the table
handling and deadlock detection code itself, not just the list of kernel
modifications presented in the Bass article.

If anyone knows of a version that has support for shared locks, that would be
even better.
-- 

					- Dave

...{decvax,ihnp4,ucbvax}!allegra!phri!orville!dvm!dave