ttyvar.h

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/*
** ttyvar.h for lseos in lseos-srv/tty/tty
** 
** Made by Vianney Rancurel
** Login   <vianney@epita.fr>
** 
** Started on  Tue Feb 17 17:14:41 2004 Vianney Rancurel
** Last update Mon Dec  6 11:53:07 2004 Vianney Rancurel
*/
#ifndef __TTYVAR_H__
#define __TTYVAR_H__    1
#include <libc.h>
#include <libtty.h>

struct s_ttydev;
struct s_tty;
typedef int             (*t_ttydev_init_fn)(struct s_ttydev *ttydev,
                                            struct s_tty *tty,
                                            void **ttydev_data);
typedef void            (*t_ttydev_destroy_fn)(void *ttydev_data);
typedef ssize_t         (*t_ttydev_write_fn)(void *ttydev_data, 
                                             char *buf, int len);
typedef int             (*t_ttydev_start_fn)(void *ttydev_data);
typedef int             (*t_ttydev_ioctl_fn)(void *ttydev_data,
                                             int cmd,
                                             void *input);

typedef struct          s_ttydev
{
  char                  name[MAXTTYDEVNAME + 1];

  t_ttydev_init_fn      init_fn;
  t_ttydev_destroy_fn   destroy_fn;
  t_ttydev_write_fn     write_fn;
  t_ttydev_start_fn     start_fn; /* might be NULL */
  t_ttydev_ioctl_fn     ioctl_fn; /* might be NULL */

}                       t_ttydev;

typedef struct          s_tty
{
  u_int32_t             avail:1;
  u_int32_t             eof:1;          
  struct termios        termios;
  struct winsize        ws;
  pid_t                 pgrp;

#define TTY_BUFSIZ      4096
  char                  buf[TTY_BUFSIZ];
  int                   pos;
  u_int32_t             cond;

  t_ttydev              *ttydev;
  void                  *ttydev_data;

}                       t_tty;

typedef struct          s_tty_info
{
  __cpu_simple_lock_t   lock;
}                       t_tty_info;

#define MAXTTY          128

/*
 * fixed entries
 */
#define TTYDEV_PCCONS   0
#define TTYDEV_SERIAL1  1
#define TTYDEV_SERIAL2  2
#define TTYDEV_VCONS0   3
#define TTYDEVNVCONS    10
#define TTYDEV_PTY0     (TTYDEV_VCONS0+TTYDEVNVCONS)
#define TTYDEVNPTY      42
#define TTYDEV_PTYS0    (TTYDEV_PTY0+TTYDEVNPTY)
#define TTYDEVNPTYS     TTYDEVNPTY
#define MAXTTYDEV       (TTYDEV_PTYS0+TTYDEVNPTYS)

/* PROTO main.c */
/* main.c */
void tty_init(t_tty *tty);
ssize_t tty_fill_buf(t_tty *tty, char *buf, int len);
void sys_fd_tty_open(t_tcb *caller);
void sys_fd_tty_write(t_tcb *caller, int *do_yield);
void sys_fd_tty_read(t_tcb *caller, int *do_yield);
void sys_fd_tty_close(t_tcb *caller);
void sys_fd_tty_fstat(t_tcb *caller);
void sys_fd_tty_dump(t_tcb *caller);
void sys_fd_tty_ioctl(t_tcb *caller);
void sys_fd_tty_poll(t_tcb *caller);
void do_ttysrv_syscall(void);
void ttysrv_syscall(void);
void create_ttysrv(void);
void treat_dead(pid_t deadpid);
void signotify(int sig);
void ttyd_main(void);
pid_t create_ttyd(void);
int main(int argc, char **argv);
#endif

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