obrien@Rand-Unix.ARPA (04/12/84)
My, was I wrong! No, of course 4.2 does not go through any file system entities to access the network; one just creates a socket in the Internet domain and binds it to an address. One would have to hot-wire the "bind()" mechanism to groups or something in order to provide protection. I was thinking of some local stuff we do to access the 3-Mbit ethernet for PUP-1 stuff. That does go through the file system, as does the 4.1BSD Internet stuff.