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 */
41 #endif /* _AIX && _I386 */
43 #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
56 extern int waiting_for_ast
;
57 extern int stop_input
;
58 #if 0 /* VAX C doeasn't understand initializing declarations */
59 extern int input_ef
= 0;
60 extern int timer_ef
= 0;
61 extern int process_ef
= 0;
65 extern int process_ef
;
67 extern int input_eflist
;
68 extern int timer_eflist
;
70 static $
DESCRIPTOR (input_dsc
, "TT");
71 static int terminator_mask
[2] = { 0, 0 };
73 static struct sensemode
{
75 unsigned char xmit_baud
;
76 unsigned char rcv_baud
;
84 unsigned long tt_char
: 24, scr_len
: 8;
85 unsigned long tt2_char
;
88 #endif /* not HAVE_TERMIOS */
89 #endif /* not HAVE_TERMIO */
92 /* Get files for keyboard remapping */
95 #include <sys/devinfo.h>
98 /* Get rid of LLITOUT in 4.1, since it is said to stimulate kernel bugs. */
105 #include <sys/bsdtty.h>
108 #if defined (HPUX) && defined (HAVE_PTYS)
109 #include <sys/ptyio.h>
118 /* Get _getpty prototype */
123 #include <sys/types.h>
126 #include <sys/ttyhw.h>
127 #include <sys/stream.h>
134 /* saka@pfu.fujitsu.co.JP writes:
135 FASYNC defined in this file. But, FASYNC don't working.
136 so no problem, because unrequest_sigio only need. */
138 #include <sys/file.h>
142 /* Special cases - inhibiting the use of certain features. */
149 #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
152 #ifdef BROKEN_TIOCGETC
153 #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
156 /* UNIPLUS systems may have FIONREAD. */
158 #include <sys.ioctl.h>
161 /* Allow m- file to inhibit use of FIONREAD. */
162 #ifdef BROKEN_FIONREAD
167 /* Interrupt input is not used if there is no FIONREAD. */
172 /* On TERMIOS systems, the tcmumbleattr calls take care of these
173 parameters, and it's a bad idea to use them (on AIX, it makes the
174 tty hang for a long time). */
175 #if defined (TIOCGLTC) && !defined (HAVE_TERMIOS)
179 #if defined (TIOCGETC) && !defined (HAVE_TERMIOS)
184 /* Try to establish the correct character to disable terminal functions
185 in a system-independent manner. Note that USG (at least) define
186 _POSIX_VDISABLE as 0! */
188 #ifdef _POSIX_VDISABLE
189 #define CDISABLE _POSIX_VDISABLE
190 #else /* not _POSIX_VDISABLE */
193 #define CDISABLE CDEL
196 #endif /* not CDEL */
197 #endif /* not _POSIX_VDISABLE */
199 /* Get the number of characters queued for output. */
201 /* EMACS_OUTQSIZE(FD, int *SIZE) stores the number of characters
202 queued for output to the terminal FD in *SIZE, if FD is a tty.
203 Returns -1 if there was an error (i.e. FD is not a tty), 0
206 #define EMACS_OUTQSIZE(fd, size) (ioctl ((fd), TIOCOUTQ, (size)))
211 #undef EMACS_OUTQSIZE
212 #define EMACS_OUTQSIZE(fd, size) (ioctl ((fd), TCOUTQ, (size)))
217 /* Manipulate a terminal's current process group. */
219 /* EMACS_HAVE_TTY_PGRP is true if we can get and set the tty's current
220 controlling process group.
222 EMACS_GET_TTY_PGRP(int FD, int *PGID) sets *PGID the terminal FD's
223 current process group. Return -1 if there is an error.
225 EMACS_SET_TTY_PGRP(int FD, int *PGID) sets the terminal FD's
226 current process group to *PGID. Return -1 if there is an error. */
229 /* HPUX tty process group stuff doesn't work, says the anonymous voice
233 #define EMACS_HAVE_TTY_PGRP
236 #define EMACS_HAVE_TTY_PGRP
241 #ifdef EMACS_HAVE_TTY_PGRP
245 #define EMACS_GET_TTY_PGRP(fd, pgid) (*(pgid) = tcgetpgrp ((fd)))
246 #define EMACS_SET_TTY_PGRP(fd, pgid) (tcsetpgrp ((fd), *(pgid)))
251 #define EMACS_GET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCGPGRP, (pgid)))
252 #define EMACS_SET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCSPGRP, (pgid)))
259 /* Just ignore this for now and hope for the best */
260 #define EMACS_GET_TTY_PGRP(fd, pgid) 0
261 #define EMACS_SET_TTY_PGRP(fd, pgif) 0
266 /* Manipulate a TTY's input/output processing parameters. */
268 /* struct emacs_tty is a structure used to hold the current tty
269 parameters. If the terminal has several structures describing its
270 state, for example a struct tchars, a struct sgttyb, a struct
271 tchars, a struct ltchars, and a struct pagechars, struct
272 emacs_tty should contain an element for each parameter struct
273 that Emacs may change.
275 EMACS_GET_TTY (int FD, struct emacs_tty *P) stores the parameters
276 of the tty on FD in *P. Return zero if all's well, or -1 if we ran
277 into an error we couldn't deal with.
279 EMACS_SET_TTY (int FD, struct emacs_tty *P, int waitp)
280 sets the parameters of the tty on FD according to the contents of
281 *P. If waitp is non-zero, we wait for all queued output to be
282 written before making the change; otherwise, we forget any queued
283 input and make the change immediately.
284 Return 0 if all went well, and -1 if anything failed.
286 EMACS_TTY_TABS_OK (struct emacs_tty *P) is false iff the kernel
287 expands tabs to spaces upon output; in that case, there is no
288 advantage to using tabs over spaces. */
291 /* For each tty parameter structure that Emacs might want to save and restore,
292 - include an element for it in this structure, and
293 - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
298 /* There is always one of the following elements, so there is no need
299 for dummy get and set definitions. */
307 struct sensemode main
;
314 /* If we have TERMIOS, we don't need to do this - they're taken care of
315 by the tc*attr calls. */
318 struct ltchars ltchars
;
322 struct tchars tchars
;
328 /* Define EMACS_GET_TTY and EMACS_SET_TTY,
329 the macros for reading and setting parts of `struct emacs_tty'.
331 These got pretty unmanageable (huge macros are hard to debug), and
332 finally needed some code which couldn't be done as part of an
333 expression, so we moved them out to their own functions in sysdep.c. */
334 #define EMACS_GET_TTY(fd, p) (emacs_get_tty ((fd), (p)))
335 #define EMACS_SET_TTY(fd, p, waitp) (emacs_set_tty ((fd), (p), (waitp)))
338 /* Define EMACS_TTY_TABS_OK. */
342 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
344 #else /* not def HAVE_TERMIOS */
347 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
349 #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
352 #define EMACS_TTY_TABS_OK(p) (((p)->main.tt_char & TT$M_MECHTAB) != 0)
356 #define EMACS_TTY_TABS_OK(p) (((p)->main.sg_flags & XTABS) != XTABS)
358 #endif /* not def VMS */
359 #endif /* not def HAVE_TERMIO */
360 #endif /* not def HAVE_TERMIOS */