Annotation of src/usr.bin/window/wwenviron.c, Revision 1.3
1.3 ! deraadt 1: /* $OpenBSD: wwenviron.c,v 1.4 1995/12/21 08:39:50 mycroft Exp $ */
1.2 deraadt 2: /* $NetBSD: wwenviron.c,v 1.4 1995/12/21 08:39:50 mycroft Exp $ */
1.1 deraadt 3:
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.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the University of
22: * California, Berkeley and its contributors.
23: * 4. Neither the name of the University nor the names of its contributors
24: * may be used to endorse or promote products derived from this software
25: * without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37: * SUCH DAMAGE.
38: */
39:
40: #ifndef lint
41: #if 0
42: static char sccsid[] = "@(#)wwenviron.c 8.1 (Berkeley) 6/6/93";
43: #else
1.3 ! deraadt 44: static char rcsid[] = "$OpenBSD: wwenviron.c,v 1.4 1995/12/21 08:39:50 mycroft Exp $";
1.1 deraadt 45: #endif
46: #endif /* not lint */
47:
48: #include "ww.h"
49: #if !defined(OLD_TTY) && !defined(TIOCSCTTY) && !defined(TIOCNOTTY)
50: #include <sys/ioctl.h>
51: #endif
52: #include <sys/signal.h>
53:
54: /*
55: * Set up the environment of this process to run in window 'wp'.
56: */
57: wwenviron(wp)
58: register struct ww *wp;
59: {
60: register i;
61: #ifndef TIOCSCTTY
62: int pgrp = getpid();
63: #endif
64: char buf[1024];
1.2 deraadt 65: sigset_t sigset;
1.1 deraadt 66:
67: #ifndef TIOCSCTTY
68: if ((i = open("/dev/tty", 0)) < 0)
69: goto bad;
70: if (ioctl(i, TIOCNOTTY, (char *)0) < 0)
71: goto bad;
72: (void) close(i);
73: #endif
74: if ((i = wp->ww_socket) < 0) {
75: if ((i = open(wp->ww_ttyname, 2)) < 0)
76: goto bad;
77: if (wwsettty(i, &wwwintty) < 0)
78: goto bad;
79: if (wwsetttysize(i, wp->ww_w.nr, wp->ww_w.nc) < 0)
80: goto bad;
81: }
82: (void) dup2(i, 0);
83: (void) dup2(i, 1);
84: (void) dup2(i, 2);
85: (void) close(i);
86: #ifdef TIOCSCTTY
87: (void) setsid();
88: (void) ioctl(0, TIOCSCTTY, 0);
89: #else
90: (void) ioctl(0, TIOCSPGRP, (char *)&pgrp);
91: (void) setpgrp(pgrp, pgrp);
92: #endif
93: /* SIGPIPE is the only one we ignore */
94: (void) signal(SIGPIPE, SIG_DFL);
1.2 deraadt 95: sigemptyset(&sigset);
96: sigprocmask(SIG_SETMASK, &sigset, (sigset_t *)0);
1.1 deraadt 97: /*
98: * Two conditions that make destructive setenv ok:
99: * 1. setenv() copies the string,
100: * 2. we've already called tgetent which copies the termcap entry.
101: */
102: (void) sprintf(buf, "%sco#%d:li#%d:%s",
103: WWT_TERMCAP, wp->ww_w.nc, wp->ww_w.nr, wwwintermcap);
104: (void) setenv("TERMCAP", buf, 1);
105: (void) sprintf(buf, "%d", wp->ww_id + 1);
106: (void) setenv("WINDOW_ID", buf, 1);
107: return 0;
108: bad:
109: wwerrno = WWE_SYS;
110: return -1;
111: }