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 (WIN32_NATIVE)
99 /***** (3) The WIN32_NATIVE 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 (WIN32_NATIVE) && !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_GET_TTY_PGRP(int FD, pid_t *PGID) sets *PGID to the terminal
250 FD's current foreground process group. Return -1 if there is an error.
252 EMACS_SET_TTY_PGRP(int FD, pid_t *PGID) sets the terminal FD's current
253 foreground process group to *PGID. Return -1 if there is an error.
255 We prefer using the ioctl (BSD) interface instead of its Posix
256 replacement tgetpgrp/tcsetpgrp since that is documented as being
257 restricted to processes sharing the same controlling tty. */
259 #if defined (TIOCGPGRP)
261 #define EMACS_GET_TTY_PROCESS_GROUP(fd, pgid) ioctl (fd, TIOCGPGRP, pgid)
262 #define EMACS_SET_TTY_PROCESS_GROUP(fd, pgid) ioctl (fd, TIOCSPGRP, pgid)
264 #elif defined (HAVE_TCGETPGRP)
266 #define EMACS_GET_TTY_PROCESS_GROUP(fd, pgid) (*(pgid) = tcgetpgrp (fd))
267 #define EMACS_SET_TTY_PROCESS_GROUP(fd, pgid) tcsetpgrp (fd, *(pgid))
271 /* Just ignore this for now and hope for the best */
272 #define EMACS_GET_TTY_PROCESS_GROUP(fd, pgid) 0
273 #define EMACS_SET_TTY_PROCESS_GROUP(fd, pgif) 0
277 /* EMACS_GETPGRP (arg) returns the process group of the terminal. */
280 #define EMACS_GETPGRP(x) getpgrp()
282 #define EMACS_GETPGRP(x) getpgrp(x)
283 #endif /* GETPGRP_VOID */
285 /* XEmacs backward-compatibility. Is 0 always a reasonable argument? */
286 #define EMACS_GET_PROCESS_GROUP() EMACS_GETPGRP (0)
288 /* XEmacs addition? */
290 /* EMACS_SEPARATE_PROCESS_GROUP () creates a separate process group for the
293 /* EMACS_SET_PROCESS_GROUP () sets our process group as specified. */
295 /* POSIX calls for setpgid(), so we use it if it's available.
296 Otherwise use setpgrp(), in USG or BSD flavor. Note that
297 on newer systems, setpgrp() has unwanted effects (e.g.
298 creating a new session), so we want to avoid its use
301 NOTE: On some older systems, we should consider using setpgrp2()
302 if it exists. This is sufficiently rare, though, that there
303 seems no point in autodetecting it. Currently dgux.h is the
304 only place where this has to be munged. */
306 #if defined (HAVE_SETPGID)
307 # define EMACS_SEPARATE_PROCESS_GROUP() setpgid (0, 0)
308 # define EMACS_SET_PROCESS_GROUP(pg) setpgid (0, pg)
310 # define EMACS_SEPARATE_PROCESS_GROUP() setpgrp ()
311 /* old (pre-SVR4) USG's don't provide any way to do this.
312 No big loss -- it just means that ^Z won't work right
313 if we're run from sh. */
314 # define EMACS_SET_PROCESS_GROUP(pg)
316 # define EMACS_SEPARATE_PROCESS_GROUP()
318 /* Under NeXTstep, a process group of 0 is not the same as specifying
319 your own process ID, so we go ahead and specify it explicitly. */
320 # define EMACS_SEPARATE_PROCESS_GROUP() setpgrp (0, getpid ())
321 # define EMACS_SET_PROCESS_GROUP(pg) setpgrp (0, pg)
325 /* --------------------------------------------------------- */
326 /* Manipulate a TTY's input/output processing parameters */
327 /* --------------------------------------------------------- */
329 /* struct emacs_tty is a structure used to hold the current tty
330 parameters. If the terminal has several structures describing its
331 state, for example a struct tchars, a struct sgttyb, a struct
332 tchars, a struct ltchars, and a struct pagechars, struct
333 emacs_tty should contain an element for each parameter struct
334 that Emacs may change.
336 emacs_get_tty (int FD, struct emacs_tty *P) stores the parameters
337 of the tty on FD in *P. Return zero if all's well, or -1 if we ran
338 into an error we couldn't deal with.
340 emacs_set_tty (int FD, struct emacs_tty *P, int flushp)
341 sets the parameters of the tty on FD according to the contents of
342 *P. If flushp is non-zero, we discard queued input to be
343 written before making the change.
344 Return 0 if all went well, and -1 if anything failed.
346 EMACS_TTY_TABS_OK (struct emacs_tty *P) is false iff the kernel
347 expands tabs to spaces upon output; in that case, there is no
348 advantage to using tabs over spaces. */
351 /* For each tty parameter structure that Emacs might want to save and restore,
352 - include an element for it in this structure, and
353 - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
358 /* There is always one of the following elements, so there is no need
359 for dummy get and set definitions. */
362 #else /* !HAVE_TCATTR */
365 #else /* !HAVE_TERMIO */
368 #else /* not WIN32_NATIVE */
370 #endif /* not WIN32_NATIVE */
371 #endif /* !HAVE_TERMIO */
372 #endif /* !HAVE_TCATTR */
374 /* If we have TERMIOS, we don't need to do this - they're taken care of
375 by the tc*attr calls. */
378 struct ltchars ltchars;
379 #endif /* HAVE_LTCHARS */
382 struct tchars tchars;
384 #endif /* HAVE_TCHARS */
385 #endif /* HAVE_TERMIOS */
388 int emacs_get_tty (int fd, struct emacs_tty *settings);
389 int emacs_set_tty (int fd, struct emacs_tty *settings, int flushp);
392 /* --------------------------------------------------------- */
393 /* Define EMACS_TTY_TABS_OK */
394 /* --------------------------------------------------------- */
399 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
401 #define EMACS_TTY_TABS_OK(p) 1
404 #else /* not def HAVE_TERMIOS */
407 #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
409 #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
411 #define EMACS_TTY_TABS_OK(p) 0
412 #else /* not WIN32_NATIVE */
413 #define EMACS_TTY_TABS_OK(p) (((p)->main.sg_flags & XTABS) != XTABS)
414 #endif /* not WIN32_NATIVE */
416 #endif /* not def HAVE_TERMIO */
417 #endif /* not def HAVE_TERMIOS */
419 #endif /* INCLUDED_systty_h_ */