1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright (c) 1987 by Sun Microsystems, Inc.
24 */
25
26#ident	"%Z%%M%	%I%	%E% SMI"
27		/* SunOS-4.1 1.2	*/
28
29/*
30 * Pseudo-terminal driver.
31 *
32 * Configuration dependent variables
33 */
34
35#include <sys/types.h>
36#include <sys/param.h>
37#include <sys/termios.h>
38#include <sys/stream.h>
39#include <sys/stropts.h>
40#include <sys/kmem.h>
41#include <sys/tty.h>
42#include <sys/ptyvar.h>
43
44#ifndef	NOLDPTY
45#define	NOLDPTY	48		/* crude XXX */
46#endif
47
48int	npty = NOLDPTY;
49
50struct	pty *pty_softc;
51
52struct pollhead ptcph;		/* poll head for ptcpoll() use */
53
54/*
55 * Allocate space for data structures at runtime.
56 */
57void
58pty_initspace(void)
59{
60	pty_softc = (struct pty *)
61		kmem_zalloc(npty * sizeof (struct pty), KM_SLEEP);
62}
63