linux-stable/arch/um/include/chan_kern.h
Jeff Dike d14ad81f80 uml: handle errors on opening host side of consoles
If the host side of a console can't be opened, this will now produce visible
error messages.

enable_chan now returns a status and this is passed up to con_open and
ssl_open, which will complain if anything went wrong.

The default host device for the serial line driver is now a pts device rather
than a pty device since lots of hosts have LEGACY_PTYS disabled.  This had
always been failing on such hosts, but silently.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:38 -07:00

52 lines
1.6 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 list_head *chans, struct delayed_work *task,
struct tty_struct *tty, int irq);
extern int parse_chan_pair(char *str, struct line *line, int device,
const struct chan_opts *opts, char **error_out);
extern int open_chan(struct list_head *chans);
extern int write_chan(struct list_head *chans, const char *buf, int len,
int write_irq);
extern int console_write_chan(struct list_head *chans, const char *buf,
int len);
extern int console_open_chan(struct line *line, struct console *co);
extern void deactivate_chan(struct list_head *chans, int irq);
extern void reactivate_chan(struct list_head *chans, int irq);
extern void chan_enable_winch(struct list_head *chans, struct tty_struct *tty);
extern int enable_chan(struct line *line);
extern void close_chan(struct list_head *chans, int delay_free_irq);
extern int chan_window_size(struct list_head *chans,
unsigned short *rows_out,
unsigned short *cols_out);
extern int chan_out_fd(struct list_head *chans);
extern int chan_config_string(struct list_head *chans, char *str, int size,
char **error_out);
#endif