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code.delx.au - gnu-emacs/blob - src/systty.h
1 /* systty.h - System-dependent definitions for terminals.
2 Copyright (C) 1993 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
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 1, or (at your option)
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.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
24 /* Include the proper files. */
27 #include <sys/ioctl.h>
31 #endif /* not NO_TERMIO */
35 #if defined(_AIX) && defined(_I386)
36 #include <termios.h> /* termios.h needs to be before termio.h */
43 #endif /* _AIX && _I386 */
45 #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
58 extern int waiting_for_ast
;
59 extern int stop_input
;
60 #if 0 /* VAX C doeasn't understand initializing declarations */
61 extern int input_ef
= 0;
62 extern int timer_ef
= 0;
63 extern int process_ef
= 0;
67 extern int process_ef
;
69 extern int input_eflist
;
70 extern int timer_eflist
;
72 static $
DESCRIPTOR (input_dsc
, "TT");
73 static int terminator_mask
[2] = { 0, 0 };
75 static struct sensemode
{
77 unsigned char xmit_baud
;
78 unsigned char rcv_baud
;
86 unsigned long tt_char
: 24, scr_len
: 8;
87 unsigned long tt2_char
;
90 #endif /* not HAVE_TERMIOS */
91 #endif /* not HAVE_TERMIO */
94 /* Get files for keyboard remapping */
97 #include <sys/devinfo.h>
100 /* Get rid of LLITOUT in 4.1, since it is said to stimulate kernel bugs. */
107 #include <sys/bsdtty.h>
110 #if defined (HPUX) && defined (HAVE_PTYS)
111 #include <sys/ptyio.h>
120 /* Get _getpty prototype */
125 #include <sys/types.h>
128 #include <sys/ttyhw.h>
129 #include <sys/stream.h>
136 /* saka@pfu.fujitsu.co.JP writes:
137 FASYNC defined in this file. But, FASYNC don't working.
138 so no problem, because unrequest_sigio only need. */
140 #include <sys/file.h>
144 /* Special cases - inhibiting the use of certain features. */
151 #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
154 #ifdef BROKEN_TIOCGETC
155 #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
158 /* UNIPLUS systems may have FIONREAD. */
160 #include <sys.ioctl.h>
163 /* Allow m- file to inhibit use of FIONREAD. */
164 #ifdef BROKEN_FIONREAD
169 /* Interrupt input is not used if there is no FIONREAD. */
174 /* On TERMIOS systems, the tcmumbleattr calls take care of these
175 parameters, and it's a bad idea to use them (on AIX, it makes the
176 tty hang for a long time). */
177 #if defined (TIOCGLTC) && !defined (HAVE_TERMIOS)
181 #if defined (TIOCGETC) && !defined (HAVE_TERMIOS)
186 /* Try to establish the correct character to disable terminal functions
187 in a system-independent manner. Note that USG (at least) define
188 _POSIX_VDISABLE as 0! */
190 #ifdef _POSIX_VDISABLE
191 #define CDISABLE _POSIX_VDISABLE
192 #else /* not _POSIX_VDISABLE */
195 #define CDISABLE CDEL
198 #endif /* not CDEL */
199 #endif /* not _POSIX_VDISABLE */
201 /* Get the number of characters queued for output. */
203 /* EMACS_OUTQSIZE(FD, int *SIZE) stores the number of characters
204 queued for output to the terminal FD in *SIZE, if FD is a tty.
205 Returns -1 if there was an error (i.e. FD is not a tty), 0
208 #define EMACS_OUTQSIZE(fd, size) (ioctl ((fd), TIOCOUTQ, (size)))
213 #undef EMACS_OUTQSIZE
214 #define EMACS_OUTQSIZE(fd, size) (ioctl ((fd), TCOUTQ, (size)))
219 /* Manipulate a terminal's current process group. */
221 /* EMACS_HAVE_TTY_PGRP is true if we can get and set the tty's current
222 controlling process group.
224 EMACS_GET_TTY_PGRP(int FD, int *PGID) sets *PGID the terminal FD's
225 current process group. Return -1 if there is an error.
227 EMACS_SET_TTY_PGRP(int FD, int *PGID) sets the terminal FD's
228 current process group to *PGID. Return -1 if there is an error. */
231 /* HPUX tty process group stuff doesn't work, says the anonymous voice
235 #define EMACS_HAVE_TTY_PGRP
238 #define EMACS_HAVE_TTY_PGRP
243 #ifdef EMACS_HAVE_TTY_PGRP
247 #define EMACS_GET_TTY_PGRP(fd, pgid) (*(pgid) = tcgetpgrp ((fd)))
248 #define EMACS_SET_TTY_PGRP(fd, pgid) (tcsetpgrp ((fd), *(pgid)))
253 #define EMACS_GET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCGPGRP, (pgid)))
254 #define EMACS_SET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCSPGRP, (pgid)))
261 /* Just ignore this for now and hope for the best */
262 #define EMACS_GET_TTY_PGRP(fd, pgid) 0
263 #define EMACS_SET_TTY_PGRP(fd, pgif) 0
268 /* Manipulate a TTY's input/output processing parameters. */
270 /* struct emacs_tty is a structure used to hold the current tty
271 parameters. If the terminal has several structures describing its
272 state, for example a struct tchars, a struct sgttyb, a struct
273 tchars, a struct ltchars, and a struct pagechars, struct
274 emacs_tty should contain an element for each parameter struct
275 that Emacs may change.
277 EMACS_GET_TTY (int FD, struct emacs_tty *P) stores the parameters
278 of the tty on FD in *P. Return zero if all's well, or -1 if we ran
279 into an error we couldn't deal with.
281 EMACS_SET_TTY (int FD, struct emacs_tty *P, int waitp)
282 sets the parameters of the tty on FD according to the contents of
283 *P. If waitp is non-zero, we wait for all queued output to be
284 written before making the change; otherwise, we forget any queued
285 input and make the change immediately.
286 Return 0 if all went well, and -1 if anything failed.
288 EMACS_TTY_TABS_OK (struct emacs_tty *P) is false iff the kernel
289 expands tabs to spaces upon output; in that case, there is no
290 advantage to using tabs over spaces. */
293 /* For each tty parameter structure that Emacs might want to save and restore,
294 - include an element for it in this structure, and
295 - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
300 /* There is always one of the following elements, so there is no need
301 for dummy get and set definitions. */
309 struct sensemode main
;
316 /* If we have TERMIOS, we don't need to do this - they're taken care of
317 by the tc*attr calls. */
320 struct ltchars ltchars
;
324 struct tchars tchars
;
330 /* Define EMACS_GET_TTY and EMACS_SET_TTY,
331 the macros for reading and setting parts of `struct emacs_tty'.
333 These got pretty unmanageable (huge macros are hard to debug), and
334 finally needed some code which couldn't be done as part of an
335 expression, so we moved them out to their own functions in sysdep.c. */
336 #define EMACS_GET_TTY(fd, p) (emacs_get_tty ((fd), (p)))
337 #define EMACS_SET_TTY(fd, p, waitp) (emacs_set_tty ((fd), (p), (waitp)))
340 /* Define EMACS_TTY_TABS_OK. */
344 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
346 #else /* not def HAVE_TERMIOS */
349 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
351 #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
354 #define EMACS_TTY_TABS_OK(p) (((p)->main.tt_char & TT$M_MECHTAB) != 0)
358 #define EMACS_TTY_TABS_OK(p) (((p)->main.sg_flags & XTABS) != XTABS)
360 #endif /* not def VMS */
361 #endif /* not def HAVE_TERMIO */
362 #endif /* not def HAVE_TERMIOS */