Sys 5 IPC messages for 4.3 BSD

[Richard Stevens]

I have just finished taking the System 5.2 message routines
(msgctl, msgget, msgrcv and msgsnd) and putting them into
the 4.3 BSD kernel. I did this in order to implement an
SNA networking package that we have bought.
The four msgXXX functions are added as new kernel system calls.
The code was added so that it is binary compatible
with ULTRIX-32, Version 1.2 (i.e., I used the same system call
numbers).

I will provide the diffs necessary to do this to anyone
who is interested, but NOTE: you must have the System 5.2 source
code to do this, as all I can distribute are the diffs to the
two files ipc.c and msg.c (along with the appropriate diffs to
the necessary 4.3 BSD files).

Richard Stevens
Health Systems International, New Haven, CT
ihnp4 ! hsi ! stevens