1 /* systty.h - System-dependent definitions for terminals.
2 Copyright (C) 1993-1994, 2001-2023 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
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
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
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 */