1 /* systty.h - System-dependent definitions for terminals.
2 Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
4 This file is part of XEmacs.
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
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
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. */
21 /* Synched up with: FSF 19.30. */
23 #ifndef INCLUDED_systty_h_
24 #define INCLUDED_systty_h_
30 /* If we defined these before and we are about to redefine them,
31 prevent alarming warnings. */
54 /* Include the proper files. */
60 /* XEmacs: TERMIOS is mo' better than TERMIO so we use it if it's
61 there. Since TERMIO is backward-compatibility stuff if both it
62 and TERMIOS exist, it's more likely to be broken. */
64 #if defined (HAVE_TERMIOS)
66 /***** (1) The TERMIOS way (POSIX style) *****/
68 # if defined (_AIX) && defined (_I386)
69 # include <termios.h> /* termios.h needs to be before termio.h */
72 # if !defined (NO_TERMIO)
76 # endif /* _AIX && _I386 */
77 # ifndef INCLUDED_FCNTL
78 # define INCLUDED_FCNTL
82 #elif defined (HAVE_TERMIO)
84 /***** (2) The TERMIO way (system V style) *****/
87 # include <sys/ioctl.h>
91 # endif /* not NO_TERMIO */
92 # ifndef INCLUDED_FCNTL
93 # define INCLUDED_FCNTL
97 #elif defined (DOS_NT)
99 /***** (3) The MSDOS/NT way *****/
105 /***** (4) The BSD way *****/
107 # ifdef linux /* XEmacs addition -- necessary? */
108 # include <bsd/sgtty.h>
114 #endif /* HAVE_TERMIOS */
116 /* XEmacs: I don't think we need the following crap. */
117 #ifdef __GNU_LIBRARY__
121 /* Formerly there was a conditional that included sys/filio.h if
122 USG5_4 was defined, but this is already included in s/usg5-4.h */
124 /* Generally useful to include this file: */
126 /* But Sun OS has broken include files and doesn't want it included */
127 #if !defined (DOS_NT) && !defined (WIN32) && !defined (SUNOS4)
128 # include <sys/ioctl.h>
130 /* UNIPLUS systems may have FIONREAD. */
132 #include <sys.ioctl.h>
136 /* ----------------------------------------------------- */
137 /* miscellaneous includes */
138 /* ----------------------------------------------------- */
141 /* Get files for keyboard remapping */
144 #include <sys/devinfo.h>
147 /* XEmacs: We don't support BSD 4.1 any more */
150 #include <sys/bsdtty.h>
153 /* Include files for PTY's */
155 #if defined (HPUX) && defined (HAVE_PTYS)
156 #include <sys/ptyio.h>
164 # include <sys/types.h>
165 # include <sys/tty.h>
167 # include <sys/ttyhw.h>
168 # include <sys/stream.h>
171 # include <sys/pty.h>
175 /* XEmacs: removed some random if defined (pfa) crap for FASYNC (SIGIO).
176 We've cleaned SIGIO up. */
179 /* ----------------------------------------------------- */
180 /* inhibiting particular features */
181 /* ----------------------------------------------------- */
184 #if defined (XENIX) || defined (BROKEN_TIOCGETC)
185 #undef TIOCGETC /* Avoid confusing some conditionals that test this. */
188 /* XEmacs: SIGIO is cleaned up so we remove the crap here that messes
189 with it (and FIONREAD and FASYNC, which are related). */
191 #ifdef BROKEN_TIOCGWINSZ /* XEmacs addition */
196 /* On TERMIOS systems, the tcmumbleattr calls take care of these
197 parameters, and it's a bad idea to use them (on AIX, it makes the
198 tty hang for a long time). */
199 #if defined (TIOCGLTC) && !defined (HAVE_TERMIOS)
203 #if defined (TIOCGETC) && !defined (HAVE_TERMIOS)
208 /* ----------------------------------------------------- */
209 /* disabling terminal functions */
210 /* ----------------------------------------------------- */
212 /* Try to establish the correct character to disable terminal functions
213 in a system-independent manner.
214 We use the POSIX standard way to do this, and emulate on other systems. */
216 #ifndef _POSIX_VDISABLE
218 # define _POSIX_VDISABLE CDEL
220 # define _POSIX_VDISABLE 255
222 #endif /* ! _POSIX_VDISABLE */
225 /* ----------------------------------------------------- */
226 /* Get the number of characters queued for output */
227 /* ----------------------------------------------------- */
229 /* EMACS_OUTQSIZE(FD, int *SIZE) stores the number of characters
230 queued for output to the terminal FD in *SIZE, if FD is a tty.
231 Returns -1 if there was an error (i.e. FD is not a tty), 0
234 #define EMACS_OUTQSIZE(fd, size) ioctl (fd, TIOCOUTQ, size)
239 #undef EMACS_OUTQSIZE
240 #define EMACS_OUTQSIZE(fd, size) ioctl (fd, TCOUTQ, size)
245 /* -------------------------------------------------------------------- */
246 /* Manipulate a terminal's current (foreground) process group */
247 /* -------------------------------------------------------------------- */
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. */
258 /* HPUX tty process group stuff doesn't work, says the anonymous voice
260 /* But HPUX people say it does, so I've removed it. --ben */
262 # define EMACS_HAVE_TTY_PGRP
265 # define EMACS_HAVE_TTY_PGRP
269 #ifdef EMACS_HAVE_TTY_PGRP
271 #if defined (HAVE_TERMIOS) && ! defined (BSD_TERMIOS)
273 /* Resist the urge to insert needless extra parentheses. */
274 #define EMACS_GET_TTY_PGRP(fd, pgid) (*(pgid) = tcgetpgrp (fd))
275 #define EMACS_SET_TTY_PGRP(fd, pgid) tcsetpgrp (fd, *(pgid))
277 #elif defined (TIOCSPGRP)
279 #define EMACS_GET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCGPGRP, (pgid)))
280 #define EMACS_SET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCSPGRP, (pgid)))
284 #endif /* EMACS_HAVE_TTY_PGRP */
286 #ifndef EMACS_GET_TTY_PGRP
288 /* Just ignore this for now and hope for the best */
289 #define EMACS_GET_TTY_PGRP(fd, pgid) 0
290 #define EMACS_SET_TTY_PGRP(fd, pgif) 0
294 /* XEmacs interim backward-compatibility */
295 #define EMACS_GET_TTY_PROCESS_GROUP EMACS_GET_TTY_PGRP
296 #define EMACS_SET_TTY_PROCESS_GROUP EMACS_SET_TTY_PGRP
298 /* EMACS_GETPGRP (arg) returns the process group of the terminal. */
301 #define EMACS_GETPGRP(x) getpgrp()
303 #define EMACS_GETPGRP(x) getpgrp(x)
304 #endif /* GETPGRP_VOID */
306 /* XEmacs backward-compatibility. Is 0 always a reasonable argument? */
307 #define EMACS_GET_PROCESS_GROUP() EMACS_GETPGRP (0)
309 /* XEmacs addition? */
311 /* EMACS_SEPARATE_PROCESS_GROUP () creates a separate process group for the
314 /* EMACS_SET_PROCESS_GROUP () sets our process group as specified. */
316 /* POSIX calls for setpgid(), so we use it if it's available.
317 Otherwise use setpgrp(), in USG or BSD flavor. Note that
318 on newer systems, setpgrp() has unwanted effects (e.g.
319 creating a new session), so we want to avoid its use
322 NOTE: On some older systems, we should consider using setpgrp2()
323 if it exists. This is sufficiently rare, though, that there
324 seems no point in autodetecting it. Currently dgux.h is the
325 only place where this has to be munged. */
327 #if defined (HAVE_SETPGID)
328 # define EMACS_SEPARATE_PROCESS_GROUP() setpgid (0, 0)
329 # define EMACS_SET_PROCESS_GROUP(pg) setpgid (0, pg)
331 # define EMACS_SEPARATE_PROCESS_GROUP() setpgrp ()
332 /* old (pre-SVR4) USG's don't provide any way to do this.
333 No big loss -- it just means that ^Z won't work right
334 if we're run from sh. */
335 # define EMACS_SET_PROCESS_GROUP(pg)
336 #elif defined(__MINGW32__)
337 # define EMACS_SEPARATE_PROCESS_GROUP()
339 /* Under NeXTstep, a process group of 0 is not the same as specifying
340 your own process ID, so we go ahead and specify it explicitly. */
341 # define EMACS_SEPARATE_PROCESS_GROUP() setpgrp (0, getpid ())
342 # define EMACS_SET_PROCESS_GROUP(pg) setpgrp (0, pg)
346 /* --------------------------------------------------------- */
347 /* Manipulate a TTY's input/output processing parameters */
348 /* --------------------------------------------------------- */
350 /* struct emacs_tty is a structure used to hold the current tty
351 parameters. If the terminal has several structures describing its
352 state, for example a struct tchars, a struct sgttyb, a struct
353 tchars, a struct ltchars, and a struct pagechars, struct
354 emacs_tty should contain an element for each parameter struct
355 that Emacs may change.
357 emacs_get_tty (int FD, struct emacs_tty *P) stores the parameters
358 of the tty on FD in *P. Return zero if all's well, or -1 if we ran
359 into an error we couldn't deal with.
361 emacs_set_tty (int FD, struct emacs_tty *P, int flushp)
362 sets the parameters of the tty on FD according to the contents of
363 *P. If flushp is non-zero, we discard queued input to be
364 written before making the change.
365 Return 0 if all went well, and -1 if anything failed.
367 EMACS_TTY_TABS_OK (struct emacs_tty *P) is false iff the kernel
368 expands tabs to spaces upon output; in that case, there is no
369 advantage to using tabs over spaces. */
372 /* For each tty parameter structure that Emacs might want to save and restore,
373 - include an element for it in this structure, and
374 - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
379 /* There is always one of the following elements, so there is no need
380 for dummy get and set definitions. */
383 #else /* !HAVE_TCATTR */
386 #else /* !HAVE_TERMIO */
389 #else /* not DOS_NT */
391 #endif /* not DOS_NT */
392 #endif /* !HAVE_TERMIO */
393 #endif /* !HAVE_TCATTR */
395 /* If we have TERMIOS, we don't need to do this - they're taken care of
396 by the tc*attr calls. */
399 struct ltchars ltchars;
400 #endif /* HAVE_LTCHARS */
403 struct tchars tchars;
405 #endif /* HAVE_TCHARS */
406 #endif /* HAVE_TERMIOS */
409 int emacs_get_tty (int fd, struct emacs_tty *settings);
410 int emacs_set_tty (int fd, struct emacs_tty *settings, int flushp);
413 /* --------------------------------------------------------- */
414 /* Define EMACS_TTY_TABS_OK */
415 /* --------------------------------------------------------- */
420 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
422 #define EMACS_TTY_TABS_OK(p) 1
425 #else /* not def HAVE_TERMIOS */
428 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
430 #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
432 #define EMACS_TTY_TABS_OK(p) 0
433 #else /* not DOS_NT */
434 #define EMACS_TTY_TABS_OK(p) (((p)->main.sg_flags & XTABS) != XTABS)
435 #endif /* not DOS_NT */
437 #endif /* not def HAVE_TERMIO */
438 #endif /* not def HAVE_TERMIOS */
440 #endif /* INCLUDED_systty_h_ */