| 1 | /* systty.h - System-dependent definitions for terminals. |
| 2 | Copyright (C) 1993, 1994 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GNU Emacs. |
| 5 | |
| 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) |
| 9 | any later version. |
| 10 | |
| 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. |
| 15 | |
| 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. */ |
| 20 | |
| 21 | #ifdef HAVE_TERMIOS |
| 22 | #define HAVE_TCATTR |
| 23 | #endif |
| 24 | |
| 25 | /* If we defined these before and we are about to redefine them, |
| 26 | prevent alarming warnings. */ |
| 27 | #ifdef BSD_TERMIOS |
| 28 | #undef NL0 |
| 29 | #undef NL1 |
| 30 | #undef CR0 |
| 31 | #undef CR1 |
| 32 | #undef CR2 |
| 33 | #undef CR3 |
| 34 | #undef TAB0 |
| 35 | #undef TAB1 |
| 36 | #undef TAB2 |
| 37 | #undef XTABS |
| 38 | #undef BS0 |
| 39 | #undef BS1 |
| 40 | #undef FF0 |
| 41 | #undef FF1 |
| 42 | #undef ECHO |
| 43 | #undef NOFLSH |
| 44 | #undef TOSTOP |
| 45 | #undef FLUSHO |
| 46 | #undef PENDIN |
| 47 | #endif |
| 48 | \f |
| 49 | /* Include the proper files. */ |
| 50 | #ifdef HAVE_TERMIO |
| 51 | #ifdef __DGUX |
| 52 | #include <sys/ioctl.h> |
| 53 | #endif |
| 54 | #ifndef NO_TERMIO |
| 55 | #include <termio.h> |
| 56 | #endif /* not NO_TERMIO */ |
| 57 | #ifndef INCLUDED_FCNTL |
| 58 | #define INCLUDED_FCNTL |
| 59 | #include <fcntl.h> |
| 60 | #endif |
| 61 | #else /* not HAVE_TERMIO */ |
| 62 | #ifdef HAVE_TERMIOS |
| 63 | #if defined(_AIX) && defined(_I386) |
| 64 | #include <termios.h> /* termios.h needs to be before termio.h */ |
| 65 | #include <termio.h> |
| 66 | #else /* not (_AIX && _I386) */ |
| 67 | #ifndef NO_TERMIO |
| 68 | #include <termio.h> |
| 69 | #endif |
| 70 | #include <termios.h> |
| 71 | #endif /* not (_AIX && _I386) */ |
| 72 | #define INCLUDED_FCNTL |
| 73 | #include <fcntl.h> |
| 74 | #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */ |
| 75 | #ifndef VMS |
| 76 | #ifndef DOS_NT |
| 77 | #include <sgtty.h> |
| 78 | #endif /* not DOS_NT */ |
| 79 | #else /* VMS */ |
| 80 | #include <descrip.h> |
| 81 | static struct iosb |
| 82 | { |
| 83 | short status; |
| 84 | short offset; |
| 85 | short termlen; |
| 86 | short term; |
| 87 | } input_iosb; |
| 88 | |
| 89 | extern int waiting_for_ast; |
| 90 | extern int stop_input; |
| 91 | extern int input_ef; |
| 92 | extern int timer_ef; |
| 93 | extern int process_ef; |
| 94 | extern int input_eflist; |
| 95 | extern int timer_eflist; |
| 96 | |
| 97 | static $DESCRIPTOR (input_dsc, "TT"); |
| 98 | static int terminator_mask[2] = { 0, 0 }; |
| 99 | |
| 100 | static struct sensemode { |
| 101 | short status; |
| 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; |
| 108 | char class; |
| 109 | char type; |
| 110 | short scr_wid; |
| 111 | unsigned long tt_char : 24, scr_len : 8; |
| 112 | unsigned long tt2_char; |
| 113 | } sensemode_iosb; |
| 114 | #endif /* VMS */ |
| 115 | #endif /* not HAVE_TERMIOS */ |
| 116 | #endif /* not HAVE_TERMIO */ |
| 117 | |
| 118 | #ifdef __GNU_LIBRARY__ |
| 119 | #include <sys/ioctl.h> |
| 120 | #include <termios.h> |
| 121 | #endif |
| 122 | |
| 123 | #ifdef AIXHFT |
| 124 | /* Get files for keyboard remapping */ |
| 125 | #define HFNKEYS 2 |
| 126 | #include <sys/hft.h> |
| 127 | #include <sys/devinfo.h> |
| 128 | #endif |
| 129 | |
| 130 | /* Get rid of LLITOUT in 4.1, since it is said to stimulate kernel bugs. */ |
| 131 | #ifdef BSD4_1 |
| 132 | #undef LLITOUT |
| 133 | #define LLITOUT 0 |
| 134 | #endif /* 4.1 */ |
| 135 | |
| 136 | #ifdef NEED_BSDTTY |
| 137 | #include <sys/bsdtty.h> |
| 138 | #endif |
| 139 | |
| 140 | #if defined (HPUX) && defined (HAVE_PTYS) |
| 141 | #include <sys/ptyio.h> |
| 142 | #endif |
| 143 | |
| 144 | #ifdef AIX |
| 145 | #include <sys/pty.h> |
| 146 | #endif /* AIX */ |
| 147 | |
| 148 | #if (defined (POSIX) || defined (NEED_UNISTD_H)) && defined (HAVE_UNISTD_H) |
| 149 | #include <unistd.h> |
| 150 | #endif |
| 151 | |
| 152 | #ifdef SYSV_PTYS |
| 153 | #include <sys/types.h> |
| 154 | #include <sys/tty.h> |
| 155 | #ifdef titan |
| 156 | #include <sys/ttyhw.h> |
| 157 | #include <sys/stream.h> |
| 158 | #endif |
| 159 | #ifndef NO_PTY_H |
| 160 | #include <sys/pty.h> |
| 161 | #endif |
| 162 | #endif |
| 163 | |
| 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. */ |
| 167 | #if defined (pfa) |
| 168 | #include <sys/file.h> |
| 169 | #endif |
| 170 | |
| 171 | \f |
| 172 | /* Special cases - inhibiting the use of certain features. */ |
| 173 | |
| 174 | #ifdef APOLLO |
| 175 | #undef TIOCSTART |
| 176 | #endif |
| 177 | |
| 178 | #ifdef XENIX |
| 179 | #undef TIOCGETC /* Avoid confusing some conditionals that test this. */ |
| 180 | #endif |
| 181 | |
| 182 | #ifdef BROKEN_TIOCGETC |
| 183 | #undef TIOCGETC /* Avoid confusing some conditionals that test this. */ |
| 184 | #endif |
| 185 | |
| 186 | /* UNIPLUS systems may have FIONREAD. */ |
| 187 | #ifdef UNIPLUS |
| 188 | #include <sys.ioctl.h> |
| 189 | #endif |
| 190 | |
| 191 | /* Allow m- file to inhibit use of FIONREAD. */ |
| 192 | #ifdef BROKEN_FIONREAD |
| 193 | #undef FIONREAD |
| 194 | #undef ASYNC |
| 195 | #endif |
| 196 | |
| 197 | /* Interrupt input is not used if there is no FIONREAD. */ |
| 198 | #ifndef FIONREAD |
| 199 | #undef SIGIO |
| 200 | #endif |
| 201 | |
| 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) |
| 206 | #define HAVE_LTCHARS |
| 207 | #endif |
| 208 | |
| 209 | #if defined (TIOCGETC) && !defined (HAVE_TERMIOS) |
| 210 | #define HAVE_TCHARS |
| 211 | #endif |
| 212 | |
| 213 | \f |
| 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! */ |
| 217 | |
| 218 | #ifdef _POSIX_VDISABLE |
| 219 | #define CDISABLE _POSIX_VDISABLE |
| 220 | #else /* not _POSIX_VDISABLE */ |
| 221 | #ifdef CDEL |
| 222 | #undef CDISABLE |
| 223 | #define CDISABLE CDEL |
| 224 | #else /* not CDEL */ |
| 225 | #define CDISABLE 255 |
| 226 | #endif /* not CDEL */ |
| 227 | #endif /* not _POSIX_VDISABLE */ |
| 228 | \f |
| 229 | /* Get the number of characters queued for output. */ |
| 230 | |
| 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 |
| 234 | otherwise. */ |
| 235 | #ifdef TIOCOUTQ |
| 236 | #define EMACS_OUTQSIZE(fd, size) (ioctl ((fd), TIOCOUTQ, (size))) |
| 237 | #endif |
| 238 | |
| 239 | #ifdef HAVE_TERMIO |
| 240 | #ifdef TCOUTQ |
| 241 | #undef EMACS_OUTQSIZE |
| 242 | #define EMACS_OUTQSIZE(fd, size) (ioctl ((fd), TCOUTQ, (size))) |
| 243 | #endif |
| 244 | #endif |
| 245 | |
| 246 | \f |
| 247 | /* Manipulate a terminal's current process group. */ |
| 248 | |
| 249 | /* EMACS_HAVE_TTY_PGRP is true if we can get and set the tty's current |
| 250 | controlling process group. |
| 251 | |
| 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. |
| 254 | |
| 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. */ |
| 257 | |
| 258 | #ifdef HPUX |
| 259 | /* HPUX tty process group stuff doesn't work, says the anonymous voice |
| 260 | from the past. */ |
| 261 | #else |
| 262 | #ifdef TIOCGPGRP |
| 263 | #define EMACS_HAVE_TTY_PGRP |
| 264 | #else |
| 265 | #ifdef HAVE_TERMIOS |
| 266 | #define EMACS_HAVE_TTY_PGRP |
| 267 | #endif |
| 268 | #endif |
| 269 | #endif |
| 270 | |
| 271 | #ifdef EMACS_HAVE_TTY_PGRP |
| 272 | |
| 273 | #if defined (HAVE_TERMIOS) && ! defined (BSD_TERMIOS) |
| 274 | |
| 275 | #define EMACS_GET_TTY_PGRP(fd, pgid) (*(pgid) = tcgetpgrp ((fd))) |
| 276 | #define EMACS_SET_TTY_PGRP(fd, pgid) (tcsetpgrp ((fd), *(pgid))) |
| 277 | |
| 278 | #else |
| 279 | #ifdef TIOCSPGRP |
| 280 | |
| 281 | #define EMACS_GET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCGPGRP, (pgid))) |
| 282 | #define EMACS_SET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCSPGRP, (pgid))) |
| 283 | |
| 284 | #endif |
| 285 | #endif |
| 286 | |
| 287 | #else |
| 288 | |
| 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 |
| 292 | |
| 293 | #endif |
| 294 | |
| 295 | /* EMACS_GETPGRP (arg) returns the process group of the process. */ |
| 296 | |
| 297 | #ifdef __GNU_LIBRARY__ |
| 298 | /* GNU libc by default defines getpgrp with no args on all systems. */ |
| 299 | #if __GLIBC__ >= 2 |
| 300 | /* glibc-2.1 adds the BSD compatibility getpgrp function |
| 301 | if you use _BSD_SOURCE, which Emacs does on GNU/Linux systems. */ |
| 302 | #if __GLIBC_MINOR__ < 1 || ! defined (__FAVOR_BSD) |
| 303 | #define GETPGRP_NO_ARG |
| 304 | #endif |
| 305 | #else /* __GLIBC__ < 2 */ |
| 306 | #define GETPGRP_NO_ARG |
| 307 | #endif /* __GLIBC__ < 2 */ |
| 308 | #else /* not __GNU_LIBRARY__ */ |
| 309 | #if defined (USG) && !defined (GETPGRP_NEEDS_ARG) |
| 310 | # if !defined (GETPGRP_NO_ARG) |
| 311 | # define GETPGRP_NO_ARG |
| 312 | # endif |
| 313 | #endif |
| 314 | #endif /* not __GNU_LIBRARY__ */ |
| 315 | |
| 316 | #if defined (GETPGRP_NO_ARG) |
| 317 | # define EMACS_GETPGRP(x) getpgrp() |
| 318 | #else |
| 319 | # define EMACS_GETPGRP(x) getpgrp(x) |
| 320 | #endif /* !GETPGRP_NO_ARG */ |
| 321 | \f |
| 322 | /* Manipulate a TTY's input/output processing parameters. */ |
| 323 | |
| 324 | /* struct emacs_tty is a structure used to hold the current tty |
| 325 | parameters. If the terminal has several structures describing its |
| 326 | state, for example a struct tchars, a struct sgttyb, a struct |
| 327 | tchars, a struct ltchars, and a struct pagechars, struct |
| 328 | emacs_tty should contain an element for each parameter struct |
| 329 | that Emacs may change. |
| 330 | |
| 331 | EMACS_GET_TTY (int FD, struct emacs_tty *P) stores the parameters |
| 332 | of the tty on FD in *P. Return zero if all's well, or -1 if we ran |
| 333 | into an error we couldn't deal with. |
| 334 | |
| 335 | EMACS_SET_TTY (int FD, struct emacs_tty *P, int flushp) |
| 336 | sets the parameters of the tty on FD according to the contents of |
| 337 | *P. If flushp is non-zero, we discard queued input to be |
| 338 | written before making the change. |
| 339 | Return 0 if all went well, and -1 if anything failed. |
| 340 | |
| 341 | EMACS_TTY_TABS_OK (struct emacs_tty *P) is false iff the kernel |
| 342 | expands tabs to spaces upon output; in that case, there is no |
| 343 | advantage to using tabs over spaces. */ |
| 344 | |
| 345 | |
| 346 | /* For each tty parameter structure that Emacs might want to save and restore, |
| 347 | - include an element for it in this structure, and |
| 348 | - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the |
| 349 | new members. */ |
| 350 | |
| 351 | struct emacs_tty { |
| 352 | |
| 353 | /* There is always one of the following elements, so there is no need |
| 354 | for dummy get and set definitions. */ |
| 355 | #ifdef HAVE_TCATTR |
| 356 | struct termios main; |
| 357 | #else |
| 358 | #ifdef HAVE_TERMIO |
| 359 | struct termio main; |
| 360 | #else |
| 361 | #ifdef VMS |
| 362 | struct sensemode main; |
| 363 | #else |
| 364 | #ifdef DOS_NT |
| 365 | int main; |
| 366 | #else /* not DOS_NT */ |
| 367 | struct sgttyb main; |
| 368 | #endif /* not DOS_NT */ |
| 369 | #endif |
| 370 | #endif |
| 371 | #endif |
| 372 | |
| 373 | /* If we have TERMIOS, we don't need to do this - they're taken care of |
| 374 | by the tc*attr calls. */ |
| 375 | #ifndef HAVE_TERMIOS |
| 376 | #ifdef HAVE_LTCHARS |
| 377 | struct ltchars ltchars; |
| 378 | #endif |
| 379 | |
| 380 | #ifdef HAVE_TCHARS |
| 381 | struct tchars tchars; |
| 382 | int lmode; |
| 383 | #endif |
| 384 | #endif |
| 385 | }; |
| 386 | \f |
| 387 | /* Define EMACS_GET_TTY and EMACS_SET_TTY, |
| 388 | the macros for reading and setting parts of `struct emacs_tty'. |
| 389 | |
| 390 | These got pretty unmanageable (huge macros are hard to debug), and |
| 391 | finally needed some code which couldn't be done as part of an |
| 392 | expression, so we moved them out to their own functions in sysdep.c. */ |
| 393 | #define EMACS_GET_TTY(fd, p) (emacs_get_tty ((fd), (p))) |
| 394 | #define EMACS_SET_TTY(fd, p, waitp) (emacs_set_tty ((fd), (p), (waitp))) |
| 395 | #ifdef P_ /* Unfortunately this file is sometimes included before lisp.h */ |
| 396 | extern int emacs_get_tty P_ ((int, struct emacs_tty *)); |
| 397 | extern int emacs_set_tty P_ ((int, struct emacs_tty *, int)); |
| 398 | #endif |
| 399 | |
| 400 | \f |
| 401 | /* Define EMACS_TTY_TABS_OK. */ |
| 402 | |
| 403 | #ifdef HAVE_TERMIOS |
| 404 | |
| 405 | #ifdef TABDLY |
| 406 | #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3) |
| 407 | #else |
| 408 | #define EMACS_TTY_TABS_OK(p) 1 |
| 409 | #endif |
| 410 | |
| 411 | #else /* not def HAVE_TERMIOS */ |
| 412 | #ifdef HAVE_TERMIO |
| 413 | |
| 414 | #define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3) |
| 415 | |
| 416 | #else /* neither HAVE_TERMIO nor HAVE_TERMIOS */ |
| 417 | #ifdef VMS |
| 418 | |
| 419 | #define EMACS_TTY_TABS_OK(p) (((p)->main.tt_char & TT$M_MECHTAB) != 0) |
| 420 | |
| 421 | #else |
| 422 | |
| 423 | #ifdef DOS_NT |
| 424 | #define EMACS_TTY_TABS_OK(p) 0 |
| 425 | #else /* not DOS_NT */ |
| 426 | #define EMACS_TTY_TABS_OK(p) (((p)->main.sg_flags & XTABS) != XTABS) |
| 427 | #endif /* not DOS_NT */ |
| 428 | |
| 429 | #endif /* not def VMS */ |
| 430 | #endif /* not def HAVE_TERMIO */ |
| 431 | #endif /* not def HAVE_TERMIOS */ |