Annotation of src/usr.bin/window/wwpty.c, Revision 1.7
1.7 ! millert 1: /* $OpenBSD: wwpty.c,v 1.6 2003/04/05 01:39:50 pvalchev Exp $ */
1.1 deraadt 2: /* $NetBSD: wwpty.c,v 1.3 1995/09/28 10:35:45 tls Exp $ */
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.
1.7 ! 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[] = "@(#)wwpty.c 8.1 (Berkeley) 6/6/93";
39: #else
1.7 ! millert 40: static char rcsid[] = "$OpenBSD: wwpty.c,v 1.6 2003/04/05 01:39:50 pvalchev Exp $";
1.1 deraadt 41: #endif
42: #endif /* not lint */
43:
44: #include "ww.h"
1.4 millert 45: #include <string.h>
1.1 deraadt 46: #include <fcntl.h>
47: #if !defined(OLD_TTY) && !defined(TIOCPKT)
48: #include <sys/ioctl.h>
49: #endif
50:
51: wwgetpty(w)
1.5 mpech 52: struct ww *w;
1.1 deraadt 53: {
1.5 mpech 54: char c, *p;
1.1 deraadt 55: int tty;
56: int on = 1;
57: #define PTY "/dev/XtyXX"
58: #define _PT 5
59: #define _PQRS 8
60: #define _0_9 9
61:
1.6 pvalchev 62: (void) strlcpy(w->ww_ttyname, PTY, sizeof(w->ww_ttyname));
1.1 deraadt 63: for (c = 'p'; c <= 'u'; c++) {
64: w->ww_ttyname[_PT] = 'p';
65: w->ww_ttyname[_PQRS] = c;
66: w->ww_ttyname[_0_9] = '0';
67: if (access(w->ww_ttyname, 0) < 0)
68: break;
69: for (p = "0123456789abcdef"; *p; p++) {
70: w->ww_ttyname[_PT] = 'p';
71: w->ww_ttyname[_0_9] = *p;
72: if ((w->ww_pty = open(w->ww_ttyname, 2)) < 0)
73: continue;
74: w->ww_ttyname[_PT] = 't';
75: if ((tty = open(w->ww_ttyname, 2)) < 0) {
76: (void) close(w->ww_pty);
77: continue;
78: }
79: (void) close(tty);
80: if (ioctl(w->ww_pty, TIOCPKT, (char *)&on) < 0) {
81: (void) close(w->ww_pty);
82: continue;
83: }
84: (void) fcntl(w->ww_pty, F_SETFD, 1);
85: return 0;
86: }
87: }
88: w->ww_pty = -1;
89: wwerrno = WWE_NOPTY;
90: return -1;
91: }