kernel/include/tty.h

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2007  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *  Copyright (C) 2008  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   5  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   6  *  Copyright (C) 2010  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   7  *
   8  *  This program is free software: you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation, either version 3 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22
  23 #ifndef _TTY_H
  24 #define _TTY_H
  25
  26 #include <task.h>
  27 #include <user.h>
  28 #include <mytypes.h>
  29
  30 #define FD_TERM                 0x2000
  31
  32 #define TTY_CON_BUF             16000
  33 #define TTY_COUNT_MAX           1024
  34 #define TTY_SCREEN_RES_VGA      4000
  35 #define TTY_SCREEN_RES_VESA     4000
  36
  37 /* font type, size */
  38 typedef struct {
  39         unsigned char *c;
  40         unsigned char x;
  41         unsigned char y;
  42 } tty_font_t;
  43
  44 /* character array resolution - 80x25 */
  45 typedef struct {
  46         unsigned short x;
  47         unsigned short y;
  48 } tty_char_t;
  49
  50 /* log for read () op purposes */
  51 typedef struct {
  52         char *buf;
  53         unsigned short len;
  54         unsigned short pos;
  55 } tty_log_t;
  56
  57 /* Device structure */
  58 typedef struct tty_context {
  59         struct tty_context *next, *prev;
  60
  61         task_t *task;
  62         char *name;
  63         char *screen;
  64         unsigned char screen_x;
  65         unsigned char screen_y;
  66         user_t *user;
  67         char shell[64];
  68         unsigned shell_len;
  69         bool logged;
  70         char pwd[64];
  71         bool active;
  72         tty_log_t *log;
  73 } tty_t;
  74
  75 /* externs */
  76 extern tty_font_t tty_font;             /* global font settings */
  77 extern tty_char_t tty_char;             /* global character array settings */
  78
  79 extern unsigned int init_tty ();
  80 extern bool tty_write (tty_t *tty, char *str, unsigned len);
  81 extern bool tty_putch (char c);
  82 extern bool tty_putnch (tty_t *tty, char c);
  83 extern bool tty_change (tty_t *tty);
  84 extern tty_t *tty_find (char *name);
  85 extern tty_t *tty_findbytask (task_t *task);
  86 extern tty_t *gtty_init ();
  87 extern tty_t *tty_create ();
  88 extern void tty_listview ();
  89
  90 #endif
  91