window(1): Remove __RCSID & friends.
[dragonfly.git] / usr.bin / window / wwenviron.c
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2c872e05 1/* @(#)wwenviron.c 8.1 (Berkeley) 6/6/93 */
abecab39
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2/* $NetBSD: wwenviron.c,v 1.9 2003/08/07 11:17:39 agc Exp $ */
3
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4/*
5 * Copyright (c) 1983, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Edward Wang at The University of California, Berkeley.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
abecab39 19 * 3. Neither the name of the University nor the names of its contributors
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20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
abecab39 36#include <sys/types.h>
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37#if !defined(OLD_TTY) && !defined(TIOCSCTTY) && !defined(TIOCNOTTY)
38#include <sys/ioctl.h>
39#endif
abecab39 40#include <fcntl.h>
984263bc 41#include <signal.h>
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42#include <stdio.h>
43#include <stdlib.h>
44#include <unistd.h>
45#include "ww.h"
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46
47/*
48 * Set up the environment of this process to run in window 'wp'.
49 */
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50int
51wwenviron(struct ww *wp)
984263bc 52{
abecab39 53 int i;
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54#ifndef TIOCSCTTY
55 int pgrp = getpid();
56#endif
57 char buf[1024];
abecab39 58 sigset_t nsigset;
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59
60#ifndef TIOCSCTTY
61 if ((i = open("/dev/tty", 0)) < 0)
62 goto bad;
abecab39 63 if (ioctl(i, TIOCNOTTY, (char *)0) < 0)
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64 goto bad;
65 (void) close(i);
66#endif
67 if ((i = wp->ww_socket) < 0) {
68 if ((i = open(wp->ww_ttyname, 2)) < 0)
69 goto bad;
70 if (wwsettty(i, &wwwintty) < 0)
71 goto bad;
72 if (wwsetttysize(i, wp->ww_w.nr, wp->ww_w.nc) < 0)
73 goto bad;
74 }
75 (void) dup2(i, 0);
76 (void) dup2(i, 1);
77 (void) dup2(i, 2);
78 (void) close(i);
79#ifdef TIOCSCTTY
80 (void) setsid();
81 (void) ioctl(0, TIOCSCTTY, 0);
82#else
83 (void) ioctl(0, TIOCSPGRP, (char *)&pgrp);
abecab39 84 (void) setpgid(pgrp, pgrp);
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85#endif
86 /* SIGPIPE is the only one we ignore */
87 (void) signal(SIGPIPE, SIG_DFL);
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88 sigemptyset(&nsigset);
89 sigprocmask(SIG_SETMASK, &nsigset, (sigset_t *)0);
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90 /*
91 * Two conditions that make destructive setenv ok:
92 * 1. setenv() copies the string,
93 * 2. we've already called tgetent which copies the termcap entry.
94 */
95 (void) sprintf(buf, "%sco#%d:li#%d:%s",
96 WWT_TERMCAP, wp->ww_w.nc, wp->ww_w.nr, wwwintermcap);
abecab39 97 (void) setenv("TERMCAP", buf, 1);
984263bc 98 (void) sprintf(buf, "%d", wp->ww_id + 1);
abecab39 99 (void) setenv("WINDOW_ID", buf, 1);
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100 return 0;
101bad:
102 wwerrno = WWE_SYS;
103 return -1;
104}