tty.h

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#ifndef _TTY_H_
#define _TTY_H_

#include <types.h>
#include <termios_types.h>
#include <fd_types.h>

#define TIOCGWINSZ 3 
#define TIOCSCTTY 4 
#define MAX_INPUT 255 
#define TTY_DRIVER_TYPE_SYSTEM 1
#define TTY_DRIVER_TYPE_CONSOLE 2
#define TTY_DRIVER_TYPE_SERIAL 3
#define TTY_DRIVER_TYPE_PTY 4

struct _tty_driver_t;

/*  intr=^C   quit=^\   erase=bs kill=^U
  eof=^D    vtime=\0  vmin=\1   sxtc=\0
  start=^Q  stop=^S   susp=^Z   eol=\0
  reprint=^R  discard=^U  werase=^W lnext=^V
  eol2=\0
*/
#define INIT_C_CC {3, 28, 127, 21, 4, 0, 1, 0, 17, 19, 26, 0, 18, 21, 23, 22, 0}

extern struct termios tty_std_termios;

typedef struct _tty_struct_t {
        int index; 
        struct termios termios; 
        char buffer[MAX_INPUT]; 
        unsigned int p_begin;
        unsigned int p_end;
        struct _tty_driver_t *driver;
        uint8_t sem;
        int fg_process;
        int n_open;
} tty_struct_t;

typedef struct _tty_operations_t {
        int (*open) (tty_struct_t*, open_file_descriptor*);
        int (*close) (tty_struct_t*, open_file_descriptor*);
        size_t (*write)(tty_struct_t*, open_file_descriptor*, const unsigned char*, size_t);
        void (*put_char)(tty_struct_t *tty, unsigned char ch);
        size_t (*set_termios)(struct termios*, struct termios*);
        int (*ioctl)(tty_struct_t *tty, open_file_descriptor*, unsigned int, void *); 
} tty_operations_t;


typedef struct _tty_driver_t {
        const char * driver_name; 
        const char * devfs_name; 
        int num; 
        short type; 
        short subtype; 
        uint32_t flags; 
        struct termios init_termios;
        tty_struct_t **ttys;
        tty_operations_t *ops;
} tty_driver_t;

struct winsize {
        unsigned short ws_row; 
        unsigned short ws_col; 
};

tty_driver_t *alloc_tty_driver(int lines);

int tty_register_driver(tty_driver_t *driver);

void tty_insert_flip_char(tty_struct_t *tty, unsigned char ch);

void tty_init();

#endif