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From: mike%brl-vgr@sri-unix.UUCP
Newsgroups: net.unix-wizards
Subject: Re:  Job Control Wishlist
Message-ID: <12743@sri-arpa.UUCP>
Date: Mon, 17-Oct-83 14:19:20 EDT
Article-I.D.: sri-arpa.12743
Posted: Mon Oct 17 14:19:20 1983
Date-Received: Sun, 23-Oct-83 08:49:42 EDT
Lines: 11

From:  Mike Muuss <mike@brl-vgr>

Marshal -
	As far as I can tell so far, 4.2 does not have your wished-for
dup3() system call, but it *does* have the ability to "hand off"
a file descriptor to another process, using a special PF_UNIX "messsage".
Using that capability and some library routines to handle interpreting
a special signal, you actually COULD build a dup3() facility
which would work as long as the target of the dup3 was willing to cooperate.
Neat, huh?
	-Mike