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comparison src/systty.h @ 0:376386a54a3c r19-14

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date Mon, 13 Aug 2007 08:45:50 +0200
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1 /* systty.h - System-dependent definitions for terminals.
2 Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
3
4 This file is part of XEmacs.
5
6 XEmacs is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
9 later version.
10
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with XEmacs; 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. */
20
21 /* Synched up with: FSF 19.30. */
22
23 #ifndef _XEMACS_SYSTTY_H_
24 #define _XEMACS_SYSTTY_H_
25
26 #ifdef HAVE_TERMIOS
27 # define HAVE_TCATTR
28 #endif
29
30 /* If we defined these before and we are about to redefine them,
31 prevent alarming warnings. */
32 #ifdef BSD_TERMIOS
33 #undef NL0
34 #undef NL1
35 #undef CR0
36 #undef CR1
37 #undef CR2
38 #undef CR3
39 #undef TAB0
40 #undef TAB1
41 #undef TAB2
42 #undef XTABS
43 #undef BS0
44 #undef BS1
45 #undef FF0
46 #undef FF1
47 #undef ECHO
48 #undef NOFLSH
49 #undef TOSTOP
50 #undef FLUSHO
51 #undef PENDIN
52 #endif
53
54 /* Include the proper files. */
55
56 /* XEmacs: TERMIOS is mo' better than TERMIO so we use it if it's
57 there. Since TERMIO is backward-compatibility stuff if both it
58 and TERMIOS exist, it's more likely to be broken. */
59
60 #if defined (HAVE_TERMIOS)
61
62 /***** (1) The TERMIOS way (POSIX style) *****/
63
64 # if defined (_AIX) && defined (_I386)
65 # include <termios.h> /* termios.h needs to be before termio.h */
66 # include <termio.h>
67 # else
68 # if !defined (NO_TERMIO)
69 # include <termio.h>
70 # endif
71 # include <termios.h>
72 # endif /* _AIX && _I386 */
73 # ifndef INCLUDED_FCNTL
74 # define INCLUDED_FCNTL
75 # include <fcntl.h>
76 # endif
77
78 #elif defined (HAVE_TERMIO)
79
80 /***** (2) The TERMIO way (system V style) *****/
81
82 # ifdef __DGUX
83 # include <sys/ioctl.h>
84 # endif
85 # ifndef NO_TERMIO
86 # include <termio.h>
87 # endif /* not NO_TERMIO */
88 # ifndef INCLUDED_FCNTL
89 # define INCLUDED_FCNTL
90 # include <fcntl.h>
91 # endif
92
93 #elif defined (DOS_NT)
94
95 /***** (3) The MSDOS/NT way *****/
96
97 /* Nothing doing */
98
99 #elif !defined (VMS)
100
101 /***** (4) The BSD way *****/
102
103 # ifdef linux /* XEmacs addition -- necessary? */
104 # include <bsd/sgtty.h>
105 # else
106 # include <sgtty.h>
107 # endif
108
109 #else /* VMS */
110
111 /***** (5) The VMS way *****/
112
113 # include <descrip.h>
114 static struct iosb
115 {
116 short status;
117 short offset;
118 short termlen;
119 short term;
120 } input_iosb;
121
122 extern int vms_waiting_for_ast;
123 extern int vms_stop_input;
124 extern int vms_input_ef;
125 extern int vms_timer_ef;
126 extern int vms_process_ef;
127 extern int vms_input_eflist;
128 extern int vms_timer_eflist;
129
130 static $DESCRIPTOR (vms_input_dsc, "TT");
131 static int vms_terminator_mask[2] = { 0, 0 };
132
133 static struct sensemode {
134 short status;
135 unsigned char xmit_baud;
136 unsigned char rcv_baud;
137 unsigned char crfill;
138 unsigned char lffill;
139 unsigned char parity;
140 unsigned char unused;
141 char class;
142 char type;
143 short scr_wid;
144 unsigned long tt_char : 24, scr_len : 8;
145 unsigned long tt2_char;
146 } sensemode_iosb;
147
148 #endif /* VMS */
149
150 /* XEmacs: I don't think we need the following crap. */
151 #ifdef __GNU_LIBRARY__
152 #include <termios.h>
153 #endif
154
155 /* Formerly there was a conditional that included sys/filio.h if
156 USG5_4 was defined, but this is already included in s/usg5-4.h */
157
158 /* Generally useful to include this file: */
159
160 /* But Sun OS has broken include files and doesn't want it included */
161 #if !defined (VMS) && !defined (DOS_NT) && !defined (WIN32) && !defined (SUNOS4)
162 # include <sys/ioctl.h>
163 #endif
164 /* UNIPLUS systems may have FIONREAD. */
165 #ifdef UNIPLUS
166 #include <sys.ioctl.h>
167 #endif
168
169
170 /* ----------------------------------------------------- */
171 /* miscellaneous includes */
172 /* ----------------------------------------------------- */
173
174 #ifdef AIXHFT
175 /* Get files for keyboard remapping */
176 #define HFNKEYS 2
177 #include <sys/hft.h>
178 #include <sys/devinfo.h>
179 #endif
180
181 /* XEmacs: We don't support BSD 4.1 any more */
182
183 #ifdef NEED_BSDTTY
184 #include <sys/bsdtty.h>
185 #endif
186
187 /* Include files for PTY's */
188
189 #if defined (HPUX) && defined (HAVE_PTYS)
190 #include <sys/ptyio.h>
191 #endif
192
193 #ifdef AIX
194 #include <sys/pty.h>
195 #endif /* AIX */
196
197 /* XEmacs: We don't include unistd.h because it's done in lisp.h */
198
199 #ifdef SYSV_PTYS
200 # include <sys/types.h>
201 # include <sys/tty.h>
202 # ifdef titan
203 # include <sys/ttyhw.h>
204 # include <sys/stream.h>
205 # endif
206 # ifndef NO_PTY_H
207 # include <sys/pty.h>
208 # endif
209 #endif
210
211 /* XEmacs: removed some random if defined (pfa) crap for FASYNC (SIGIO).
212 We've cleaned SIGIO up. */
213
214
215 /* ----------------------------------------------------- */
216 /* inhibiting particular features */
217 /* ----------------------------------------------------- */
218
219
220 #ifdef APOLLO
221 #undef TIOCSTART
222 #endif
223
224 #if defined (XENIX) || defined (BROKEN_TIOCGETC)
225 #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
226 #endif
227
228 /* XEmacs: SIGIO is cleaned up so we remove the crap here that messes
229 with it (and FIONREAD and FASYNC, which are related). */
230
231 #ifdef BROKEN_TIOCGWINSZ /* XEmacs addition */
232 #undef TIOCGWINSZ
233 #undef TIOCSWINSZ
234 #endif
235
236 #ifdef BROKEN_O_NONBLOCK /* XEmacs addition */
237 # undef O_NONBLOCK
238 #endif /* BROKEN_O_NONBLOCK */
239
240 /* On TERMIOS systems, the tcmumbleattr calls take care of these
241 parameters, and it's a bad idea to use them (on AIX, it makes the
242 tty hang for a long time). */
243 #if defined (TIOCGLTC) && !defined (HAVE_TERMIOS)
244 #define HAVE_LTCHARS
245 #endif
246
247 #if defined (TIOCGETC) && !defined (HAVE_TERMIOS)
248 #define HAVE_TCHARS
249 #endif
250
251
252 /* ----------------------------------------------------- */
253 /* disabling terminal functions */
254 /* ----------------------------------------------------- */
255
256 /* Try to establish the correct character to disable terminal functions
257 in a system-independent manner. Note that USG (at least) define
258 _POSIX_VDISABLE as 0! */
259
260 #ifdef _POSIX_VDISABLE
261 #define CDISABLE _POSIX_VDISABLE
262 #else /* not _POSIX_VDISABLE */
263 #ifdef CDEL
264 #undef CDISABLE
265 #define CDISABLE CDEL
266 #else /* not CDEL */
267 #define CDISABLE 255
268 #endif /* not CDEL */
269 #endif /* not _POSIX_VDISABLE */
270
271
272 /* ----------------------------------------------------- */
273 /* Get the number of characters queued for output */
274 /* ----------------------------------------------------- */
275
276 /* EMACS_OUTQSIZE(FD, int *SIZE) stores the number of characters
277 queued for output to the terminal FD in *SIZE, if FD is a tty.
278 Returns -1 if there was an error (i.e. FD is not a tty), 0
279 otherwise. */
280 #ifdef TIOCOUTQ
281 #define EMACS_OUTQSIZE(fd, size) ioctl (fd, TIOCOUTQ, size)
282 #endif
283
284 #ifdef HAVE_TERMIO
285 #ifdef TCOUTQ
286 #undef EMACS_OUTQSIZE
287 #define EMACS_OUTQSIZE(fd, size) ioctl (fd, TCOUTQ, size)
288 #endif
289 #endif
290
291
292 /* -------------------------------------------------------------------- */
293 /* Manipulate a terminal's current (foreground) process group */
294 /* -------------------------------------------------------------------- */
295
296 /* EMACS_HAVE_TTY_PGRP is true if we can get and set the tty's current
297 controlling process group.
298
299 EMACS_GET_TTY_PGRP(int FD, int *PGID) sets *PGID the terminal FD's
300 current process group. Return -1 if there is an error.
301
302 EMACS_SET_TTY_PGRP(int FD, int *PGID) sets the terminal FD's
303 current process group to *PGID. Return -1 if there is an error. */
304
305 /* HPUX tty process group stuff doesn't work, says the anonymous voice
306 from the past. */
307 /* But HPUX people say it does, so I've removed it. --ben */
308 # ifdef TIOCGPGRP
309 # define EMACS_HAVE_TTY_PGRP
310 # else
311 # ifdef HAVE_TERMIOS
312 # define EMACS_HAVE_TTY_PGRP
313 # endif
314 # endif
315
316 #ifdef EMACS_HAVE_TTY_PGRP
317
318 #if defined (HAVE_TERMIOS) && ! defined (BSD_TERMIOS)
319
320 /* Resist the urge to insert needless extra parentheses. */
321 #define EMACS_GET_TTY_PGRP(fd, pgid) (*(pgid) = tcgetpgrp (fd))
322 #define EMACS_SET_TTY_PGRP(fd, pgid) tcsetpgrp (fd, *(pgid))
323
324 #elif defined (TIOCSPGRP)
325
326 #define EMACS_GET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCGPGRP, (pgid)))
327 #define EMACS_SET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCSPGRP, (pgid)))
328
329 #endif
330
331 #endif /* EMACS_HAVE_TTY_PGRP */
332
333 #ifndef EMACS_GET_TTY_PGRP
334
335 /* Just ignore this for now and hope for the best */
336 #define EMACS_GET_TTY_PGRP(fd, pgid) 0
337 #define EMACS_SET_TTY_PGRP(fd, pgif) 0
338
339 #endif
340
341 /* XEmacs interim backward-compatibility */
342 #define EMACS_GET_TTY_PROCESS_GROUP EMACS_GET_TTY_PGRP
343 #define EMACS_SET_TTY_PROCESS_GROUP EMACS_SET_TTY_PGRP
344
345 /* EMACS_GETPGRP (arg) returns the process group of the terminal. */
346
347 /* USG systems have always used the no-arg form of getpgrp().
348 POSIX also calls for this, and thus some newer BSD systems
349 have this change. Older BSD systems have an argument.
350 It would be nice to autodetect this, but there's unfortunately
351 no general way. */
352
353 /* XEmacs backwards-compatibility */
354 #ifdef GETPGRP_NEEDS_ARG
355 # undef GETPGRP_NO_ARG
356 #else
357 # ifdef GETPGRP_NO_ARG
358 # undef GETPGRP_NEEDS_ARG
359 # endif
360 #endif
361
362 #if defined (USG) && !defined (GETPGRP_NEEDS_ARG)
363 # if !defined (GETPGRP_NO_ARG)
364 # define GETPGRP_NO_ARG
365 # endif
366 #endif
367
368 #if defined (GETPGRP_NO_ARG)
369 # define EMACS_GETPGRP(x) getpgrp()
370 #else
371 # define EMACS_GETPGRP(x) getpgrp(x)
372 #endif /* !GETPGRP_NO_ARG */
373
374 /* XEmacs backward-compatibility. Is 0 always a reasonable argument? */
375 #define EMACS_GET_PROCESS_GROUP() EMACS_GETPGRP (0)
376
377 /* Xemacs addition? */
378
379 /* EMACS_SEPARATE_PROCESS_GROUP () creates a separate process group for the
380 running process. */
381
382 /* EMACS_SET_PROCESS_GROUP () sets our process group as specified. */
383
384 /* POSIX calls for setpgid(), so we use it if it's available.
385 Otherwise use setpgrp(), in USG or BSD flavor. Note that
386 on newer systems, setpgrp() has unwanted effects (e.g.
387 creating a new session), so we want to avoid its use
388 if possible.
389
390 NOTE: On some older systems, we should consider using setpgrp2()
391 if it exists. This is sufficiently rare, though, that there
392 seems no point in autodetecting it. Currently dgux.h is the
393 only place where this has to be munged. */
394
395 #if defined (HAVE_SETPGID)
396 # define EMACS_SEPARATE_PROCESS_GROUP() setpgid (0, 0)
397 # define EMACS_SET_PROCESS_GROUP(pg) setpgid (0, pg)
398 #elif defined (USG)
399 # define EMACS_SEPARATE_PROCESS_GROUP() setpgrp ()
400 /* old (pre-SVR4) USG's don't provide any way to do this.
401 No big loss -- it just means that ^Z won't work right
402 if we're run from sh. */
403 # define EMACS_SET_PROCESS_GROUP(pg)
404 #else
405 /* Under NeXTstep, a process group of 0 is not the same as specifying
406 your own process ID, so we go ahead and specify it explicitly. */
407 # define EMACS_SEPARATE_PROCESS_GROUP() setpgrp (0, getpid ())
408 # define EMACS_SET_PROCESS_GROUP(pg) setpgrp (0, pg)
409 #endif
410
411
412 /* --------------------------------------------------------- */
413 /* Manipulate a TTY's input/output processing parameters */
414 /* --------------------------------------------------------- */
415
416 /* struct emacs_tty is a structure used to hold the current tty
417 parameters. If the terminal has several structures describing its
418 state, for example a struct tchars, a struct sgttyb, a struct
419 tchars, a struct ltchars, and a struct pagechars, struct
420 emacs_tty should contain an element for each parameter struct
421 that Emacs may change.
422
423 EMACS_GET_TTY (int FD, struct emacs_tty *P) stores the parameters
424 of the tty on FD in *P. Return zero if all's well, or -1 if we ran
425 into an error we couldn't deal with.
426
427 EMACS_SET_TTY (int FD, struct emacs_tty *P, int flushp)
428 sets the parameters of the tty on FD according to the contents of
429 *P. If flushp is non-zero, we discard queued input to be
430 written before making the change.
431 Return 0 if all went well, and -1 if anything failed.
432
433 EMACS_TTY_TABS_OK (struct emacs_tty *P) is false iff the kernel
434 expands tabs to spaces upon output; in that case, there is no
435 advantage to using tabs over spaces. */
436
437
438 /* For each tty parameter structure that Emacs might want to save and restore,
439 - include an element for it in this structure, and
440 - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
441 new members. */
442
443 struct emacs_tty {
444
445 /* There is always one of the following elements, so there is no need
446 for dummy get and set definitions. */
447 #ifdef HAVE_TCATTR
448 struct termios main;
449 #else
450 #ifdef HAVE_TERMIO
451 struct termio main;
452 #else
453 #ifdef VMS
454 struct sensemode main;
455 #else
456 #ifdef DOS_NT
457 int main;
458 #else /* not DOS_NT */
459 struct sgttyb main;
460 #endif /* not DOS_NT */
461 #endif /* !VMS */
462 #endif
463 #endif
464
465 /* If we have TERMIOS, we don't need to do this - they're taken care of
466 by the tc*attr calls. */
467 #ifndef HAVE_TERMIOS
468 #ifdef HAVE_LTCHARS
469 struct ltchars ltchars;
470 #endif
471
472 #ifdef HAVE_TCHARS
473 struct tchars tchars;
474 int lmode;
475 #endif
476 #endif
477 };
478
479 /* Define EMACS_GET_TTY and EMACS_SET_TTY,
480 the macros for reading and setting parts of `struct emacs_tty'.
481
482 These got pretty unmanageable (huge macros are hard to debug), and
483 finally needed some code which couldn't be done as part of an
484 expression, so we moved them out to their own functions in sysdep.c. */
485 #define EMACS_GET_TTY(fd, p) emacs_get_tty (fd, p)
486 #define EMACS_SET_TTY(fd, p, waitp) emacs_set_tty (fd, p, waitp)
487
488
489 /* --------------------------------------------------------- */
490 /* Define EMACS_TTY_TABS_OK */
491 /* --------------------------------------------------------- */
492
493 #ifdef HAVE_TERMIOS
494
495 #ifdef TABDLY
496 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
497 #else
498 #define EMACS_TTY_TABS_OK(p) 1
499 #endif
500
501 #else /* not def HAVE_TERMIOS */
502 #ifdef HAVE_TERMIO
503
504 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
505
506 #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
507 #ifdef VMS
508
509 #define EMACS_TTY_TABS_OK(p) (((p)->main.tt_char & TT$M_MECHTAB) != 0)
510
511 #else
512
513 #ifdef DOS_NT
514 #define EMACS_TTY_TABS_OK(p) 0
515 #else /* not DOS_NT */
516 #define EMACS_TTY_TABS_OK(p) (((p)->main.sg_flags & XTABS) != XTABS)
517 #endif /* not DOS_NT */
518
519 #endif /* not def VMS */
520 #endif /* not def HAVE_TERMIO */
521 #endif /* not def HAVE_TERMIOS */
522
523 #endif /* _XEMACS_SYSTTY_H_ */