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#ifndef _LINUX_TTY_LDISC_H
#define _LINUX_TTY_LDISC_H
#include <linux/fs.h>
#include <linux/wait.h>
#include <linux/pps_kernel.h>
struct tty_ldisc_ops {
int magic;
char *name;
int num;
int flags;
int (*open)(struct tty_struct *);
void (*close)(struct tty_struct *);
void (*flush_buffer)(struct tty_struct *tty);
ssize_t (*chars_in_buffer)(struct tty_struct *tty);
ssize_t (*read)(struct tty_struct * tty, struct file * file,
unsigned char __user * buf, size_t nr);
ssize_t (*write)(struct tty_struct * tty, struct file * file,
const unsigned char * buf, size_t nr);
int (*ioctl)(struct tty_struct * tty, struct file * file,
unsigned int cmd, unsigned long arg);
long (*compat_ioctl)(struct tty_struct * tty, struct file * file,
unsigned int cmd, unsigned long arg);
void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
unsigned int (*poll)(struct tty_struct *, struct file *,
struct poll_table_struct *);
int (*hangup)(struct tty_struct *tty);
void (*receive_buf)(struct tty_struct *, const unsigned char *cp,
char *fp, int count);
void (*write_wakeup)(struct tty_struct *);
void (*dcd_change)(struct tty_struct *, unsigned int,
struct pps_event_time *);
struct module *owner;
int refcount;
};
struct tty_ldisc {
struct tty_ldisc_ops *ops;
atomic_t users;
};
#define TTY_LDISC_MAGIC 0x5403
#define LDISC_FLAG_DEFINED 0x00000001
#define MODULE_ALIAS_LDISC(ldisc) \
MODULE_ALIAS("tty-ldisc-" __stringify(ldisc))
#endif
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