src/systty.h

   1 /* systty.h - System-dependent definitions for terminals.
   2    Copyright (C) 1993-1994, 2001-2017 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 (at
   9 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 <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef EMACS_SYSTTY_H
  20 #define EMACS_SYSTTY_H
  21
  22 /* Include the proper files.  */
  23
  24 #ifndef DOS_NT
  25 #include <termios.h>
  26 #include <fcntl.h>
  27 #endif /* not DOS_NT */
  28
  29 #include <sys/ioctl.h>
  30
  31 #ifdef HPUX
  32 #include <sys/bsdtty.h>
  33 #include <sys/ptyio.h>
  34 #endif
  35
  36 #ifdef AIX
  37 #include <sys/pty.h>
  38 #endif /* AIX */
  39
  40 #include <unistd.h>
  41
  42 #include "lisp.h"
  43
  44 \f
  45 /* Try to establish the correct character to disable terminal functions
  46    in a system-independent manner.  Note that USG (at least) define
  47    _POSIX_VDISABLE as 0!  */
  48
  49 #ifdef _POSIX_VDISABLE
  50 #define CDISABLE _POSIX_VDISABLE
  51 #else /* not _POSIX_VDISABLE */
  52 #ifdef CDEL
  53 #undef CDISABLE
  54 #define CDISABLE CDEL
  55 #else /* not CDEL */
  56 #define CDISABLE 255
  57 #endif /* not CDEL */
  58 #endif /* not _POSIX_VDISABLE */
  59 \f
  60 /* Manipulate a TTY's input/output processing parameters.  */
  61
  62 /* struct emacs_tty is a structure used to hold the current tty
  63    parameters.  If the terminal has several structures describing its
  64    state, for example a struct tchars, a struct sgttyb, a struct
  65    tchars, a struct ltchars, and a struct pagechars, struct
  66    emacs_tty should contain an element for each parameter struct
  67    that Emacs may change.  */
  68
  69
  70 /* For each tty parameter structure that Emacs might want to save and restore,
  71    - include an element for it in this structure, and
  72    - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
  73      new members.  */
  74
  75 struct emacs_tty {
  76
  77 /* There is always one of the following elements, so there is no need
  78    for dummy get and set definitions.  */
  79 #ifndef DOS_NT
  80   struct termios main;
  81 #else /* DOS_NT */
  82   unsigned main;
  83 #endif /* DOS_NT */
  84 };
  85 \f
  86 /* From sysdep.c or w32.c  */
  87 extern int emacs_get_tty (int, struct emacs_tty *) EXTERNALLY_VISIBLE;
  88 extern int emacs_set_tty (int, struct emacs_tty *, bool) EXTERNALLY_VISIBLE;
  89 extern void suppress_echo_on_tty (int);
  90 extern int serial_open (Lisp_Object);
  91 extern void serial_configure (struct Lisp_Process *, Lisp_Object);
  92
  93 #endif /* EMACS_SYSTTY_H */