src/systty.h

   1 /* systty.h - System-dependent definitions for terminals.
   2    Copyright (C) 1993-1994, 2001-2015 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software: you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation, either version 3 of the License, or
   9 (at your option) any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 /* Include the proper files.  */
  20
  21 #ifndef DOS_NT
  22 #include <termios.h>
  23 #include <fcntl.h>
  24 #endif /* not DOS_NT */
  25
  26 #include <stdbool.h>
  27 #include <sys/ioctl.h>
  28
  29 #ifdef HPUX
  30 #include <sys/bsdtty.h>
  31 #include <sys/ptyio.h>
  32 #endif
  33
  34 #ifdef AIX
  35 #include <sys/pty.h>
  36 #endif /* AIX */
  37
  38 #include <unistd.h>
  39
  40 \f
  41 /* Try to establish the correct character to disable terminal functions
  42    in a system-independent manner.  Note that USG (at least) define
  43    _POSIX_VDISABLE as 0!  */
  44
  45 #ifdef _POSIX_VDISABLE
  46 #define CDISABLE _POSIX_VDISABLE
  47 #else /* not _POSIX_VDISABLE */
  48 #ifdef CDEL
  49 #undef CDISABLE
  50 #define CDISABLE CDEL
  51 #else /* not CDEL */
  52 #define CDISABLE 255
  53 #endif /* not CDEL */
  54 #endif /* not _POSIX_VDISABLE */
  55 \f
  56 /* Manipulate a TTY's input/output processing parameters.  */
  57
  58 /* struct emacs_tty is a structure used to hold the current tty
  59    parameters.  If the terminal has several structures describing its
  60    state, for example a struct tchars, a struct sgttyb, a struct
  61    tchars, a struct ltchars, and a struct pagechars, struct
  62    emacs_tty should contain an element for each parameter struct
  63    that Emacs may change.  */
  64
  65
  66 /* For each tty parameter structure that Emacs might want to save and restore,
  67    - include an element for it in this structure, and
  68    - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
  69      new members.  */
  70
  71 struct emacs_tty {
  72
  73 /* There is always one of the following elements, so there is no need
  74    for dummy get and set definitions.  */
  75 #ifndef DOS_NT
  76   struct termios main;
  77 #else /* DOS_NT */
  78   unsigned main;
  79 #endif /* DOS_NT */
  80 };
  81 \f
  82 /* From sysdep.c or w32.c  */
  83 extern int emacs_get_tty (int, struct emacs_tty *) EXTERNALLY_VISIBLE;
  84 extern int emacs_set_tty (int, struct emacs_tty *, bool) EXTERNALLY_VISIBLE;
  85 extern void suppress_echo_on_tty (int);
  86 extern int serial_open (Lisp_Object);
  87 extern void serial_configure (struct Lisp_Process *, Lisp_Object);