1/*
2 * Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
4 */
5
6#include <stdio.h>
7#include <termios.h>
8#include <errno.h>
9#include <unistd.h>
10#include "chan_user.h"
11#include "user.h"
12#include "os.h"
13#include "um_malloc.h"
14
15struct tty_chan {
16	char *dev;
17	int raw;
18	struct termios tt;
19};
20
21static void *tty_chan_init(char *str, int device, const struct chan_opts *opts)
22{
23	struct tty_chan *data;
24
25	if(*str != ':'){
26		printk("tty_init : channel type 'tty' must specify "
27		       "a device\n");
28		return NULL;
29	}
30	str++;
31
32	data = um_kmalloc(sizeof(*data));
33	if(data == NULL)
34		return NULL;
35	*data = ((struct tty_chan) { .dev 	= str,
36				     .raw 	= opts->raw });
37
38	return data;
39}
40
41static int tty_open(int input, int output, int primary, void *d,
42		    char **dev_out)
43{
44	struct tty_chan *data = d;
45	int fd, err;
46
47	fd = os_open_file(data->dev, of_set_rw(OPENFLAGS(), input, output), 0);
48	if(fd < 0)
49		return fd;
50
51	if(data->raw){
52		CATCH_EINTR(err = tcgetattr(fd, &data->tt));
53		if(err)
54			return err;
55
56		err = raw(fd);
57		if(err)
58			return err;
59	}
60
61	*dev_out = data->dev;
62	return fd;
63}
64
65const struct chan_ops tty_ops = {
66	.type		= "tty",
67	.init		= tty_chan_init,
68	.open		= tty_open,
69	.close		= generic_close,
70	.read		= generic_read,
71	.write		= generic_write,
72	.console_write	= generic_console_write,
73	.window_size	= generic_window_size,
74	.free		= generic_free,
75	.winch		= 0,
76};
77