Annotation of src/usr.bin/window/wwenviron.c, Revision 1.2
1.2 ! deraadt 1: /* $NetBSD: wwenviron.c,v 1.4 1995/12/21 08:39:50 mycroft Exp $ */
1.1 deraadt 2:
3: /*
4: * Copyright (c) 1983, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * This code is derived from software contributed to Berkeley by
8: * Edward Wang at The University of California, Berkeley.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)wwenviron.c 8.1 (Berkeley) 6/6/93";
42: #else
1.2 ! deraadt 43: static char rcsid[] = "$NetBSD: wwenviron.c,v 1.4 1995/12/21 08:39:50 mycroft Exp $";
1.1 deraadt 44: #endif
45: #endif /* not lint */
46:
47: #include "ww.h"
48: #if !defined(OLD_TTY) && !defined(TIOCSCTTY) && !defined(TIOCNOTTY)
49: #include <sys/ioctl.h>
50: #endif
51: #include <sys/signal.h>
52:
53: /*
54: * Set up the environment of this process to run in window 'wp'.
55: */
56: wwenviron(wp)
57: register struct ww *wp;
58: {
59: register i;
60: #ifndef TIOCSCTTY
61: int pgrp = getpid();
62: #endif
63: char buf[1024];
1.2 ! deraadt 64: sigset_t sigset;
1.1 deraadt 65:
66: #ifndef TIOCSCTTY
67: if ((i = open("/dev/tty", 0)) < 0)
68: goto bad;
69: if (ioctl(i, TIOCNOTTY, (char *)0) < 0)
70: goto bad;
71: (void) close(i);
72: #endif
73: if ((i = wp->ww_socket) < 0) {
74: if ((i = open(wp->ww_ttyname, 2)) < 0)
75: goto bad;
76: if (wwsettty(i, &wwwintty) < 0)
77: goto bad;
78: if (wwsetttysize(i, wp->ww_w.nr, wp->ww_w.nc) < 0)
79: goto bad;
80: }
81: (void) dup2(i, 0);
82: (void) dup2(i, 1);
83: (void) dup2(i, 2);
84: (void) close(i);
85: #ifdef TIOCSCTTY
86: (void) setsid();
87: (void) ioctl(0, TIOCSCTTY, 0);
88: #else
89: (void) ioctl(0, TIOCSPGRP, (char *)&pgrp);
90: (void) setpgrp(pgrp, pgrp);
91: #endif
92: /* SIGPIPE is the only one we ignore */
93: (void) signal(SIGPIPE, SIG_DFL);
1.2 ! deraadt 94: sigemptyset(&sigset);
! 95: sigprocmask(SIG_SETMASK, &sigset, (sigset_t *)0);
1.1 deraadt 96: /*
97: * Two conditions that make destructive setenv ok:
98: * 1. setenv() copies the string,
99: * 2. we've already called tgetent which copies the termcap entry.
100: */
101: (void) sprintf(buf, "%sco#%d:li#%d:%s",
102: WWT_TERMCAP, wp->ww_w.nc, wp->ww_w.nr, wwwintermcap);
103: (void) setenv("TERMCAP", buf, 1);
104: (void) sprintf(buf, "%d", wp->ww_id + 1);
105: (void) setenv("WINDOW_ID", buf, 1);
106: return 0;
107: bad:
108: wwerrno = WWE_SYS;
109: return -1;
110: }