1 /*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Edward Wang at The University of California, Berkeley.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37 #ifndef lint
38 static char sccsid[] = "@(#)wwpty.c 8.1 (Berkeley) 6/6/93";
39 static char rcsid[] =
40 "$FreeBSD: head/usr.bin/window/wwpty.c 188828 2009-02-19 20:07:59Z imp $";
41 #endif /* not lint */
42
43 #include "ww.h"
44 #include <fcntl.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #if !defined(OLD_TTY) && !defined(TIOCPKT)
48 #include <sys/ioctl.h>
49 #endif
50
wwgetpty(w)51 wwgetpty(w)
52 register struct ww *w;
53 {
54 char *ttyname;
55 int master, slave, on;
56 #define PTY "/dev/XtyXX"
57
58 on = 1;
59 w->ww_pty = -1;
60
61 ttyname = malloc(strlen(PTY) + 1);
62 if (openpty(&master, &slave, ttyname, NULL, NULL) == 0) {
63 w->ww_pty = master;
64 (void) strcpy(w->ww_ttyname, ttyname);
65 if (ioctl(w->ww_pty, TIOCPKT, (char *)&on) < 0) {
66 (void) close(w->ww_pty);
67 wwerrno = WWE_SYS;
68 } else {
69 (void) fcntl(w->ww_pty, F_SETFD, 1);
70 free(ttyname);
71 return 0;
72 }
73 }
74 free(ttyname);
75
76 wwerrno = WWE_NOPTY;
77 return -1;
78 }
79