Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!rutgers!clyde!burl!codas!mtune!whuts!picuxa!gp
From: gp@picuxa.UUCP (Greg Pasquariello X1190)
Newsgroups: comp.unix.questions
Subject: setting the control terminal (how?)
Message-ID: <435@picuxa.UUCP>
Date: 30 Dec 87 14:05:02 GMT
Organization: AT&T Information Systems, Parsippany NJ
Lines: 44

I was wondering if anyone out there could help me with this.  I have a process
that needs to set it's own process group, and it's own control terminal.  From
what I thought, the terminal device driver would set the process group control
terminal upon the first tty open after the setpgrp() (phew!).  Here is a peice
of sample code to show what I am doing (no error checking is done to save space)
:


	main(argc,argv)
	int	argc;
	char	**argv;
		{
		char	**arg_ptr;

		if(!(fork())) {
			close(0);
			close(1);
			close(2):

			setpgrp();

			tty = open("/dev/tty14",2 | O_NDELAY);

			dup(tty)
			dup(tty)

			arg_ptr = &argv[1];

			execvp(argv[1],arg_ptr);
			}

		wait((int *) 0);
		exit(0);
		}



When I look at the u area for this process, the control terminal is NOT set
to /dev/tty14. In fact, if I exec ps as the argv[1], it shows the console as
the control terminal for the parent, and no control terminal ("?") for the
child.  If you could give me any help, I would greatly appreciate it.

Thanks.

Greg Pasquariello