Another contest: first person to find code in the BSD kernel written
by another current CSE faculty member gets a candy bar. Hint: the
work was done prior to his/her joining UCSD.
Topics covered:
Capabilities versus access control lists. Permission bits as
compressed (and limited expressiveness) representations of ACLs.
Unix domain sockets, transferring descriptors between unrelated
processes, reference counting and garbage collection of descriptors.
