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/*
* Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <stdio.h>
#include <termios.h>
#include <errno.h>
#include <unistd.h>
#include "chan_user.h"
#include "user.h"
#include "os.h"
#include "um_malloc.h"
struct tty_chan {
char *dev;
int raw;
struct termios tt;
};
static void *tty_chan_init(char *str, int device, const struct chan_opts *opts)
{
struct tty_chan *data;
if(*str != ':'){
printk("tty_init : channel type 'tty' must specify "
"a device\n");
return NULL;
}
str++;
data = kmalloc(sizeof(*data), UM_GFP_KERNEL);
if(data == NULL)
return NULL;
*data = ((struct tty_chan) { .dev = str,
.raw = opts->raw });
return data;
}
static int tty_open(int input, int output, int primary, void *d,
char **dev_out)
{
struct tty_chan *data = d;
int fd, err;
fd = os_open_file(data->dev, of_set_rw(OPENFLAGS(), input, output), 0);
if(fd < 0)
return fd;
if(data->raw){
CATCH_EINTR(err = tcgetattr(fd, &data->tt));
if(err)
return err;
err = raw(fd);
if(err)
return err;
}
*dev_out = data->dev;
return fd;
}
const struct chan_ops tty_ops = {
.type = "tty",
.init = tty_chan_init,
.open = tty_open,
.close = generic_close,
.read = generic_read,
.write = generic_write,
.console_write = generic_console_write,
.window_size = generic_window_size,
.free = generic_free,
.winch = 0,
};
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