1/*-
2 * Copyright (c) 2003 Poul-Henning Kamp. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.

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17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD: head/sys/kern/tty_tty.c 111815 2003-03-03 12:15:54Z phk $
26 */
27
28#include <sys/param.h>
29#include <sys/systm.h>
30#include <sys/conf.h>
31#include <sys/kernel.h>
32#include <sys/proc.h>
33#include <sys/vnode.h>
34
35static d_open_t cttyopen;
36
37#define CDEV_MAJOR 1
38
39static struct cdevsw ctty_cdevsw = {
40 .d_open = cttyopen,
41 .d_close = nullclose,
42 .d_name = "ctty",
43 .d_maj = CDEV_MAJOR,
44 .d_flags = D_TTY,
45};
46
47static dev_t ctty;
48
49static int
50cttyopen(dev_t dev, int flag, int mode, struct thread *td)
51{
52

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