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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, 1994 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 2, 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, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
25 /* If we defined these before and we are about to redefine them,
26 prevent alarming warnings. */
49 /* Include the proper files. */
52 #include <sys/ioctl.h>
56 #endif /* not NO_TERMIO */
57 #ifndef INCLUDED_FCNTL
58 #define INCLUDED_FCNTL
61 #else /* not HAVE_TERMIO */
63 #if defined(_AIX) && defined(_I386)
64 #include <termios.h> /* termios.h needs to be before termio.h */
66 #else /* not HAVE_TERMIOS */
71 #endif /* _AIX && _I386 */
72 #define INCLUDED_FCNTL
74 #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
78 #endif /* not DOS_NT */
89 extern int waiting_for_ast
;
90 extern int stop_input
;
93 extern int process_ef
;
94 extern int input_eflist
;
95 extern int timer_eflist
;
97 static $
DESCRIPTOR (input_dsc
, "TT");
98 static int terminator_mask
[2] = { 0, 0 };
100 static struct sensemode
{
102 unsigned char xmit_baud
;
103 unsigned char rcv_baud
;
104 unsigned char crfill
;
105 unsigned char lffill
;
106 unsigned char parity
;
107 unsigned char unused
;
111 unsigned long tt_char
: 24, scr_len
: 8;
112 unsigned long tt2_char
;
115 #endif /* not HAVE_TERMIOS */
116 #endif /* not HAVE_TERMIO */
118 #ifdef __GNU_LIBRARY__
119 #include <sys/ioctl.h>
124 /* Get files for keyboard remapping */
127 #include <sys/devinfo.h>
130 /* Get rid of LLITOUT in 4.1, since it is said to stimulate kernel bugs. */
137 #include <sys/bsdtty.h>
140 #if defined (HPUX) && defined (HAVE_PTYS)
141 #include <sys/ptyio.h>
148 #if (defined (POSIX) || defined (NEED_UNISTD_H)) && defined (HAVE_UNISTD_H)
153 #include <sys/types.h>
156 #include <sys/ttyhw.h>
157 #include <sys/stream.h>
164 /* saka@pfu.fujitsu.co.JP writes:
165 FASYNC defined in this file. But, FASYNC don't working.
166 so no problem, because unrequest_sigio only need. */
168 #include <sys/file.h>
172 /* Special cases - inhibiting the use of certain features. */
179 #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
182 #ifdef BROKEN_TIOCGETC
183 #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
186 /* UNIPLUS systems may have FIONREAD. */
188 #include <sys.ioctl.h>
191 /* Allow m- file to inhibit use of FIONREAD. */
192 #ifdef BROKEN_FIONREAD
197 /* Interrupt input is not used if there is no FIONREAD. */
202 /* On TERMIOS systems, the tcmumbleattr calls take care of these
203 parameters, and it's a bad idea to use them (on AIX, it makes the
204 tty hang for a long time). */
205 #if defined (TIOCGLTC) && !defined (HAVE_TERMIOS)
209 #if defined (TIOCGETC) && !defined (HAVE_TERMIOS)
214 /* Try to establish the correct character to disable terminal functions
215 in a system-independent manner. Note that USG (at least) define
216 _POSIX_VDISABLE as 0! */
218 #ifdef _POSIX_VDISABLE
219 #define CDISABLE _POSIX_VDISABLE
220 #else /* not _POSIX_VDISABLE */
223 #define CDISABLE CDEL
226 #endif /* not CDEL */
227 #endif /* not _POSIX_VDISABLE */
229 /* Get the number of characters queued for output. */
231 /* EMACS_OUTQSIZE(FD, int *SIZE) stores the number of characters
232 queued for output to the terminal FD in *SIZE, if FD is a tty.
233 Returns -1 if there was an error (i.e. FD is not a tty), 0
236 #define EMACS_OUTQSIZE(fd, size) (ioctl ((fd), TIOCOUTQ, (size)))
241 #undef EMACS_OUTQSIZE
242 #define EMACS_OUTQSIZE(fd, size) (ioctl ((fd), TCOUTQ, (size)))
247 /* Manipulate a terminal's current process group. */
249 /* EMACS_HAVE_TTY_PGRP is true if we can get and set the tty's current
250 controlling process group.
252 EMACS_GET_TTY_PGRP(int FD, int *PGID) sets *PGID the terminal FD's
253 current process group. Return -1 if there is an error.
255 EMACS_SET_TTY_PGRP(int FD, int *PGID) sets the terminal FD's
256 current process group to *PGID. Return -1 if there is an error. */
259 /* HPUX tty process group stuff doesn't work, says the anonymous voice
263 #define EMACS_HAVE_TTY_PGRP
266 #define EMACS_HAVE_TTY_PGRP
271 #ifdef EMACS_HAVE_TTY_PGRP
273 #if defined (HAVE_TERMIOS) && ! defined (BSD_TERMIOS)
275 #define EMACS_GET_TTY_PGRP(fd, pgid) (*(pgid) = tcgetpgrp ((fd)))
276 #define EMACS_SET_TTY_PGRP(fd, pgid) (tcsetpgrp ((fd), *(pgid)))
281 #define EMACS_GET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCGPGRP, (pgid)))
282 #define EMACS_SET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCSPGRP, (pgid)))
289 /* Just ignore this for now and hope for the best */
290 #define EMACS_GET_TTY_PGRP(fd, pgid) 0
291 #define EMACS_SET_TTY_PGRP(fd, pgif) 0
295 /* EMACS_GETPGRP (arg) returns the process group of the terminal. */
297 #if defined (USG) && !defined (GETPGRP_NEEDS_ARG)
298 # if !defined (GETPGRP_NO_ARG)
299 # define GETPGRP_NO_ARG
303 #if defined (GETPGRP_NO_ARG)
304 # define EMACS_GETPGRP(x) getpgrp()
306 # define EMACS_GETPGRP(x) getpgrp(x)
307 #endif /* !GETPGRP_NO_ARG */
309 /* Manipulate a TTY's input/output processing parameters. */
311 /* struct emacs_tty is a structure used to hold the current tty
312 parameters. If the terminal has several structures describing its
313 state, for example a struct tchars, a struct sgttyb, a struct
314 tchars, a struct ltchars, and a struct pagechars, struct
315 emacs_tty should contain an element for each parameter struct
316 that Emacs may change.
318 EMACS_GET_TTY (int FD, struct emacs_tty *P) stores the parameters
319 of the tty on FD in *P. Return zero if all's well, or -1 if we ran
320 into an error we couldn't deal with.
322 EMACS_SET_TTY (int FD, struct emacs_tty *P, int flushp)
323 sets the parameters of the tty on FD according to the contents of
324 *P. If flushp is non-zero, we discard queued input to be
325 written before making the change.
326 Return 0 if all went well, and -1 if anything failed.
328 EMACS_TTY_TABS_OK (struct emacs_tty *P) is false iff the kernel
329 expands tabs to spaces upon output; in that case, there is no
330 advantage to using tabs over spaces. */
333 /* For each tty parameter structure that Emacs might want to save and restore,
334 - include an element for it in this structure, and
335 - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
340 /* There is always one of the following elements, so there is no need
341 for dummy get and set definitions. */
349 struct sensemode main
;
353 #else /* not DOS_NT */
355 #endif /* not DOS_NT */
360 /* If we have TERMIOS, we don't need to do this - they're taken care of
361 by the tc*attr calls. */
364 struct ltchars ltchars
;
368 struct tchars tchars
;
374 /* Define EMACS_GET_TTY and EMACS_SET_TTY,
375 the macros for reading and setting parts of `struct emacs_tty'.
377 These got pretty unmanageable (huge macros are hard to debug), and
378 finally needed some code which couldn't be done as part of an
379 expression, so we moved them out to their own functions in sysdep.c. */
380 #define EMACS_GET_TTY(fd, p) (emacs_get_tty ((fd), (p)))
381 #define EMACS_SET_TTY(fd, p, waitp) (emacs_set_tty ((fd), (p), (waitp)))
384 /* Define EMACS_TTY_TABS_OK. */
389 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
391 #define EMACS_TTY_TABS_OK(p) 1
394 #else /* not def HAVE_TERMIOS */
397 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
399 #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
402 #define EMACS_TTY_TABS_OK(p) (((p)->main.tt_char & TT$M_MECHTAB) != 0)
407 #define EMACS_TTY_TABS_OK(p) 0
408 #else /* not DOS_NT */
409 #define EMACS_TTY_TABS_OK(p) (((p)->main.sg_flags & XTABS) != XTABS)
410 #endif /* not DOS_NT */
412 #endif /* not def VMS */
413 #endif /* not def HAVE_TERMIO */
414 #endif /* not def HAVE_TERMIOS */