linux/arch/um/drivers/chan.h
Richard Weinberger 2116bda6ad um: Use tty_port in SIGWINCH handler
The tty below tty_port might get destroyed by the tty layer
while we hold a reference to it.
So we have to carry tty_port around...

Signed-off-by: Richard Weinberger <richard@nod.at>
2013-03-11 10:08:04 +01:00

50 lines
1.4 KiB
C

/*
* Copyright (C) 2000, 2001 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __CHAN_KERN_H__
#define __CHAN_KERN_H__
#include <linux/tty.h>
#include <linux/list.h>
#include <linux/console.h>
#include "chan_user.h"
#include "line.h"
struct chan {
struct list_head list;
struct list_head free_list;
struct line *line;
char *dev;
unsigned int primary:1;
unsigned int input:1;
unsigned int output:1;
unsigned int opened:1;
unsigned int enabled:1;
int fd;
const struct chan_ops *ops;
void *data;
};
extern void chan_interrupt(struct line *line, int irq);
extern int parse_chan_pair(char *str, struct line *line, int device,
const struct chan_opts *opts, char **error_out);
extern int write_chan(struct chan *chan, const char *buf, int len,
int write_irq);
extern int console_write_chan(struct chan *chan, const char *buf,
int len);
extern int console_open_chan(struct line *line, struct console *co);
extern void deactivate_chan(struct chan *chan, int irq);
extern void reactivate_chan(struct chan *chan, int irq);
extern void chan_enable_winch(struct chan *chan, struct tty_port *port);
extern int enable_chan(struct line *line);
extern void close_chan(struct line *line);
extern int chan_window_size(struct line *line,
unsigned short *rows_out,
unsigned short *cols_out);
extern int chan_config_string(struct line *line, char *str, int size,
char **error_out);
#endif