1 /* systty.h - System-dependent definitions for terminals.
2 Copyright (C) 1993, 1994, 2001, 2002, 2003, 2004,
3 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
25 /* Include the proper files. */
29 #endif /* not NO_TERMIO */
30 #ifndef INCLUDED_FCNTL
31 #define INCLUDED_FCNTL
34 #else /* not HAVE_TERMIO */
40 #define INCLUDED_FCNTL
42 #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
46 #endif /* not DOS_NT */
57 extern int waiting_for_ast
;
58 extern int stop_input
;
61 extern int process_ef
;
62 extern int input_eflist
;
63 extern int timer_eflist
;
65 static $
DESCRIPTOR (input_dsc
, "TT");
66 static int terminator_mask
[2] = { 0, 0 };
68 static struct sensemode
{
70 unsigned char xmit_baud
;
71 unsigned char rcv_baud
;
79 unsigned long tt_char
: 24, scr_len
: 8;
80 unsigned long tt2_char
;
83 #endif /* not HAVE_TERMIOS */
84 #endif /* not HAVE_TERMIO */
86 #ifdef __GNU_LIBRARY__
87 #include <sys/ioctl.h>
92 #include <sys/bsdtty.h>
95 #if defined (HPUX) && defined (HAVE_PTYS)
96 #include <sys/ptyio.h>
103 #if (defined (POSIX) || defined (NEED_UNISTD_H)) && defined (HAVE_UNISTD_H)
108 /* Special cases - inhibiting the use of certain features. */
110 /* Allow m- file to inhibit use of FIONREAD. */
111 #ifdef BROKEN_FIONREAD
116 /* Interrupt input is not used if there is no FIONREAD. */
121 /* On TERMIOS systems, the tcmumbleattr calls take care of these
122 parameters, and it's a bad idea to use them (on AIX, it makes the
123 tty hang for a long time). */
124 #if defined (TIOCGLTC) && !defined (HAVE_TERMIOS)
128 #if defined (TIOCGETC) && !defined (HAVE_TERMIOS)
133 /* Try to establish the correct character to disable terminal functions
134 in a system-independent manner. Note that USG (at least) define
135 _POSIX_VDISABLE as 0! */
137 #ifdef _POSIX_VDISABLE
138 #define CDISABLE _POSIX_VDISABLE
139 #else /* not _POSIX_VDISABLE */
142 #define CDISABLE CDEL
145 #endif /* not CDEL */
146 #endif /* not _POSIX_VDISABLE */
148 /* Get the number of characters queued for output. */
150 /* EMACS_OUTQSIZE(FD, int *SIZE) stores the number of characters
151 queued for output to the terminal FD in *SIZE, if FD is a tty.
152 Returns -1 if there was an error (i.e. FD is not a tty), 0
155 #define EMACS_OUTQSIZE(fd, size) (ioctl ((fd), TIOCOUTQ, (size)))
160 #undef EMACS_OUTQSIZE
161 #define EMACS_OUTQSIZE(fd, size) (ioctl ((fd), TCOUTQ, (size)))
166 /* Manipulate a terminal's current process group. */
168 /* EMACS_HAVE_TTY_PGRP is true if we can get and set the tty's current
169 controlling process group.
171 EMACS_GET_TTY_PGRP(int FD, int *PGID) sets *PGID the terminal FD's
172 current process group. Return -1 if there is an error.
174 EMACS_SET_TTY_PGRP(int FD, int *PGID) sets the terminal FD's
175 current process group to *PGID. Return -1 if there is an error. */
178 /* HPUX tty process group stuff doesn't work, says the anonymous voice
182 #define EMACS_HAVE_TTY_PGRP
185 #define EMACS_HAVE_TTY_PGRP
190 #ifdef EMACS_HAVE_TTY_PGRP
192 #if defined (HAVE_TERMIOS) && ! defined (BSD_TERMIOS)
194 #define EMACS_GET_TTY_PGRP(fd, pgid) (*(pgid) = tcgetpgrp ((fd)))
195 #define EMACS_SET_TTY_PGRP(fd, pgid) (tcsetpgrp ((fd), *(pgid)))
200 #define EMACS_GET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCGPGRP, (pgid)))
201 #define EMACS_SET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCSPGRP, (pgid)))
208 /* Just ignore this for now and hope for the best */
209 #define EMACS_GET_TTY_PGRP(fd, pgid) 0
210 #define EMACS_SET_TTY_PGRP(fd, pgif) 0
214 /* EMACS_GETPGRP (arg) returns the process group of the process. */
216 #if defined (GETPGRP_VOID)
217 # define EMACS_GETPGRP(x) getpgrp()
219 # define EMACS_GETPGRP(x) getpgrp(x)
220 #endif /* !GETPGRP_VOID */
222 /* Manipulate a TTY's input/output processing parameters. */
224 /* struct emacs_tty is a structure used to hold the current tty
225 parameters. If the terminal has several structures describing its
226 state, for example a struct tchars, a struct sgttyb, a struct
227 tchars, a struct ltchars, and a struct pagechars, struct
228 emacs_tty should contain an element for each parameter struct
229 that Emacs may change.
231 EMACS_GET_TTY (int FD, struct emacs_tty *P) stores the parameters
232 of the tty on FD in *P. Return zero if all's well, or -1 if we ran
233 into an error we couldn't deal with.
235 EMACS_SET_TTY (int FD, struct emacs_tty *P, int flushp)
236 sets the parameters of the tty on FD according to the contents of
237 *P. If flushp is non-zero, we discard queued input to be
238 written before making the change.
239 Return 0 if all went well, and -1 if anything failed.
241 EMACS_TTY_TABS_OK (struct emacs_tty *P) is false if the kernel
242 expands tabs to spaces upon output; in that case, there is no
243 advantage to using tabs over spaces. */
246 /* For each tty parameter structure that Emacs might want to save and restore,
247 - include an element for it in this structure, and
248 - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
253 /* There is always one of the following elements, so there is no need
254 for dummy get and set definitions. */
262 struct sensemode main
;
266 #else /* not DOS_NT */
268 #endif /* not DOS_NT */
273 /* If we have TERMIOS, we don't need to do this - they're taken care of
274 by the tc*attr calls. */
277 struct ltchars ltchars
;
281 struct tchars tchars
;
287 /* Define EMACS_GET_TTY and EMACS_SET_TTY,
288 the macros for reading and setting parts of `struct emacs_tty'.
290 These got pretty unmanageable (huge macros are hard to debug), and
291 finally needed some code which couldn't be done as part of an
292 expression, so we moved them out to their own functions in sysdep.c. */
293 #define EMACS_GET_TTY(fd, p) (emacs_get_tty ((fd), (p)))
294 #define EMACS_SET_TTY(fd, p, waitp) (emacs_set_tty ((fd), (p), (waitp)))
295 #ifdef P_ /* Unfortunately this file is sometimes included before lisp.h */
296 extern int emacs_get_tty
P_ ((int, struct emacs_tty
*));
297 extern int emacs_set_tty
P_ ((int, struct emacs_tty
*, int));
301 /* Define EMACS_TTY_TABS_OK. */
306 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
308 #define EMACS_TTY_TABS_OK(p) 1
311 #else /* not def HAVE_TERMIOS */
314 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
316 #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
319 #define EMACS_TTY_TABS_OK(p) (((p)->main.tt_char & TT$M_MECHTAB) != 0)
324 #define EMACS_TTY_TABS_OK(p) 0
325 #else /* not DOS_NT */
326 #define EMACS_TTY_TABS_OK(p) (((p)->main.sg_flags & XTABS) != XTABS)
327 #endif /* not DOS_NT */
329 #endif /* not def VMS */
330 #endif /* not def HAVE_TERMIO */
331 #endif /* not def HAVE_TERMIOS */
333 /* arch-tag: cf4b90bc-be41-401c-be98-40619178a712
334 (do not change this comment) */