Annotation of src/usr.bin/window/wwenviron.c, Revision 1.10
1.10 ! david 1: /* $OpenBSD: wwenviron.c,v 1.9 2003/07/10 00:06:52 david 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.
1.8 millert 19: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 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:
36: #ifndef lint
37: #if 0
38: static char sccsid[] = "@(#)wwenviron.c 8.1 (Berkeley) 6/6/93";
39: #else
1.10 ! david 40: static char rcsid[] = "$OpenBSD: wwenviron.c,v 1.9 2003/07/10 00:06:52 david Exp $";
1.1 deraadt 41: #endif
42: #endif /* not lint */
43:
44: #include "ww.h"
1.10 ! david 45: #if !defined(OLD_TTY)
1.1 deraadt 46: #include <sys/ioctl.h>
47: #endif
48: #include <sys/signal.h>
1.10 ! david 49: #include <fcntl.h>
1.9 david 50: #include <signal.h>
51: #include <stdio.h>
1.10 ! david 52: #include <stdlib.h>
! 53: #include <unistd.h>
1.1 deraadt 54:
55: /*
56: * Set up the environment of this process to run in window 'wp'.
57: */
58: wwenviron(wp)
1.6 mpech 59: struct ww *wp;
1.1 deraadt 60: {
1.6 mpech 61: int i;
1.1 deraadt 62: #ifndef TIOCSCTTY
1.7 mpech 63: pid_t pgrp = getpid();
1.1 deraadt 64: #endif
65: char buf[1024];
1.2 deraadt 66: sigset_t sigset;
1.1 deraadt 67:
68: #ifndef TIOCSCTTY
69: if ((i = open("/dev/tty", 0)) < 0)
70: goto bad;
71: if (ioctl(i, TIOCNOTTY, (char *)0) < 0)
72: goto bad;
73: (void) close(i);
74: #endif
75: if ((i = wp->ww_socket) < 0) {
76: if ((i = open(wp->ww_ttyname, 2)) < 0)
77: goto bad;
78: if (wwsettty(i, &wwwintty) < 0)
79: goto bad;
80: if (wwsetttysize(i, wp->ww_w.nr, wp->ww_w.nc) < 0)
81: goto bad;
82: }
83: (void) dup2(i, 0);
84: (void) dup2(i, 1);
85: (void) dup2(i, 2);
86: (void) close(i);
87: #ifdef TIOCSCTTY
88: (void) setsid();
89: (void) ioctl(0, TIOCSCTTY, 0);
90: #else
91: (void) ioctl(0, TIOCSPGRP, (char *)&pgrp);
92: (void) setpgrp(pgrp, pgrp);
93: #endif
94: /* SIGPIPE is the only one we ignore */
95: (void) signal(SIGPIPE, SIG_DFL);
1.2 deraadt 96: sigemptyset(&sigset);
97: sigprocmask(SIG_SETMASK, &sigset, (sigset_t *)0);
1.1 deraadt 98: /*
99: * Two conditions that make destructive setenv ok:
100: * 1. setenv() copies the string,
101: * 2. we've already called tgetent which copies the termcap entry.
102: */
1.5 deraadt 103: (void) snprintf(buf, sizeof buf, "%sco#%d:li#%d:%s",
1.1 deraadt 104: WWT_TERMCAP, wp->ww_w.nc, wp->ww_w.nr, wwwintermcap);
105: (void) setenv("TERMCAP", buf, 1);
1.5 deraadt 106: (void) snprintf(buf, sizeof buf, "%d", wp->ww_id + 1);
1.1 deraadt 107: (void) setenv("WINDOW_ID", buf, 1);
108: return 0;
109: bad:
110: wwerrno = WWE_SYS;
111: return -1;
112: }