1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
#ifndef _LINUX_TTY_LDISC_H
#define _LINUX_TTY_LDISC_H
/*
* Definitions for the tty line discipline
*/
#include <linux/fs.h>
#include <linux/wait.h>
struct tty_ldisc {
int magic;
int num;
int flags;
/*
* The following routines are called from above.
*/
int (*open)(struct tty_struct *);
void (*close)(struct tty_struct *);
void (*flush_buffer)(struct tty_struct *tty);
int (*chars_in_buffer)(struct tty_struct *tty);
int (*read)(struct tty_struct * tty, struct file * file,
unsigned char * buf, unsigned int nr);
int (*write)(struct tty_struct * tty, struct file * file,
const unsigned char * buf, unsigned int nr);
int (*ioctl)(struct tty_struct * tty, struct file * file,
unsigned int cmd, unsigned long arg);
void (*set_termios)(struct tty_struct *tty, struct termios * old);
int (*select)(struct tty_struct * tty, struct inode * inode,
struct file * file, int sel_type,
struct select_table_struct *wait);
/*
* The following routines are called from below.
*/
void (*receive_buf)(struct tty_struct *, const unsigned char *cp,
char *fp, int count);
int (*receive_room)(struct tty_struct *);
void (*write_wakeup)(struct tty_struct *);
};
#define TTY_LDISC_MAGIC 0x5403
#define LDISC_FLAG_DEFINED 0x00000001
#endif /* _LINUX_TTY_LDISC_H */
|
