Commit | Line | Data |
---|---|---|
86a5659e | 1 | /* Interfaces to system-dependent kernel and library entries. |
275464e7 | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001, |
8cabe764 GM |
3 | 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
4 | Free Software Foundation, Inc. | |
86a5659e JB |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
9ec0b715 | 8 | GNU Emacs is free software: you can redistribute it and/or modify |
86a5659e | 9 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
10 | the Free Software Foundation, either version 3 of the License, or |
11 | (at your option) any later version. | |
86a5659e JB |
12 | |
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
86a5659e | 20 | |
4838e624 PJ |
21 | #ifdef HAVE_CONFIG_H |
22 | #include <config.h> | |
23 | #endif | |
86a5659e JB |
24 | |
25 | #include <signal.h> | |
5890e9f7 | 26 | #include <stdio.h> |
86a5659e | 27 | #include <setjmp.h> |
d3eb3bfa DL |
28 | #ifdef HAVE_UNISTD_H |
29 | #include <unistd.h> | |
30 | #endif | |
86a5659e | 31 | #include "lisp.h" |
8296bbf8 DL |
32 | /* Including stdlib.h isn't necessarily enough to get srandom |
33 | declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */ | |
8296bbf8 | 34 | |
4d395425 EZ |
35 | /* The w32 build defines select stuff in w32.h, which is included by |
36 | sys/select.h (included below). */ | |
37 | #ifndef WINDOWSNT | |
819b8f00 | 38 | #include "sysselect.h" |
4d395425 | 39 | #endif |
819b8f00 | 40 | |
9ac0d9e0 | 41 | #include "blockinput.h" |
86a5659e | 42 | |
fe03522b | 43 | #ifdef WINDOWSNT |
e15b6288 JR |
44 | #define read sys_read |
45 | #define write sys_write | |
fe03522b | 46 | #include <windows.h> |
e36ec798 AI |
47 | #ifndef NULL |
48 | #define NULL 0 | |
49 | #endif | |
fe03522b RS |
50 | #endif /* not WINDOWSNT */ |
51 | ||
986ffb24 JB |
52 | /* Does anyone other than VMS need this? */ |
53 | #ifndef fwrite | |
54 | #define sys_fwrite fwrite | |
55 | #else | |
56 | #undef fwrite | |
57 | #endif | |
58 | ||
86a5659e JB |
59 | #include <sys/types.h> |
60 | #include <sys/stat.h> | |
61 | #include <errno.h> | |
62 | ||
f95c3f91 | 63 | #ifdef HAVE_SETPGID |
2b7e8799 | 64 | #if !defined (USG) || defined (BSD_PGRPS) |
c8875a65 | 65 | #undef setpgrp |
f95c3f91 GM |
66 | #define setpgrp setpgid |
67 | #endif | |
2b7e8799 | 68 | #endif |
f95c3f91 | 69 | |
b05af5d3 PE |
70 | /* Get SI_SRPC_DOMAIN, if it is available. */ |
71 | #ifdef HAVE_SYS_SYSTEMINFO_H | |
72 | #include <sys/systeminfo.h> | |
73 | #endif | |
74 | ||
207bdbdb RS |
75 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
76 | #include <dos.h> | |
77 | #include "dosfns.h" | |
78 | #include "msdos.h" | |
79 | #include <sys/param.h> | |
15614e61 RS |
80 | |
81 | #if __DJGPP__ > 1 | |
82 | extern int etext; | |
83 | extern unsigned start __asm__ ("start"); | |
84 | #endif | |
207bdbdb RS |
85 | #endif |
86 | ||
e36ec798 | 87 | #ifndef USE_CRT_DLL |
9ee9af7a | 88 | #ifndef errno |
86a5659e | 89 | extern int errno; |
9ee9af7a | 90 | #endif |
e36ec798 | 91 | #endif |
86a5659e | 92 | |
bb4bc8e2 | 93 | #include <sys/file.h> |
7ce1c4de | 94 | |
612221ab | 95 | #ifdef HAVE_FCNTL_H |
bb4bc8e2 RM |
96 | #include <fcntl.h> |
97 | #endif | |
86a5659e | 98 | |
207bdbdb | 99 | #ifndef MSDOS |
86a5659e | 100 | #include <sys/ioctl.h> |
207bdbdb | 101 | #endif |
2a633456 | 102 | |
e04a4e0d | 103 | #include "systty.h" |
94c8642a | 104 | #include "syswait.h" |
86a5659e | 105 | |
e39a993c | 106 | #if defined (USG) |
86a5659e | 107 | #include <sys/utsname.h> |
86a5659e | 108 | #include <memory.h> |
e39a993c | 109 | #endif /* USG */ |
86a5659e | 110 | |
86a5659e JB |
111 | extern int quit_char; |
112 | ||
e36ec798 | 113 | #include "keyboard.h" |
0137dbf7 | 114 | #include "frame.h" |
86a5659e JB |
115 | #include "window.h" |
116 | #include "termhooks.h" | |
117 | #include "termchar.h" | |
118 | #include "termopts.h" | |
119 | #include "dispextern.h" | |
120 | #include "process.h" | |
0a125897 | 121 | #include "cm.h" /* for reset_sys_modes */ |
86a5659e | 122 | |
1eb8fd91 | 123 | /* For serial_configure and serial_open. */ |
d888760c GM |
124 | extern Lisp_Object QCport, QCspeed, QCprocess; |
125 | extern Lisp_Object QCbytesize, QCstopbits, QCparity, Qodd, Qeven; | |
126 | extern Lisp_Object QCflowcontrol, Qhw, Qsw, QCsummary; | |
127 | ||
fe03522b RS |
128 | #ifdef WINDOWSNT |
129 | #include <direct.h> | |
130 | /* In process.h which conflicts with the local copy. */ | |
131 | #define _P_WAIT 0 | |
43db14bb JB |
132 | int _cdecl _spawnlp (int, const char *, const char *, ...); |
133 | int _cdecl _getpid (void); | |
b6682dd9 | 134 | extern char *getwd (char *); |
fe03522b RS |
135 | #endif |
136 | ||
91bac16a JB |
137 | #include "syssignal.h" |
138 | #include "systime.h" | |
d79998bc KH |
139 | #ifdef HAVE_UTIME_H |
140 | #include <utime.h> | |
141 | #endif | |
142 | ||
143 | #ifndef HAVE_UTIMES | |
144 | #ifndef HAVE_STRUCT_UTIMBUF | |
145 | /* We want to use utime rather than utimes, but we couldn't find the | |
146 | structure declaration. We'll use the traditional one. */ | |
147 | struct utimbuf { | |
148 | long actime; | |
149 | long modtime; | |
150 | }; | |
151 | #endif | |
152 | #endif | |
86a5659e | 153 | |
a00d5589 RS |
154 | /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */ |
155 | #ifndef LPASS8 | |
156 | #define LPASS8 0 | |
157 | #endif | |
158 | ||
86a5659e | 159 | static int baud_convert[] = |
86a5659e JB |
160 | { |
161 | 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200, | |
162 | 1800, 2400, 4800, 9600, 19200, 38400 | |
163 | }; | |
86a5659e | 164 | |
f0d21750 GM |
165 | #ifdef HAVE_SPEED_T |
166 | #include <termios.h> | |
f0d21750 | 167 | #else |
ba5971b3 | 168 | #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T) |
ba5971b3 | 169 | #else |
8a2a6032 | 170 | #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX) |
515b04d0 | 171 | #include <termios.h> |
f2361c60 | 172 | #endif |
ba5971b3 | 173 | #endif |
f0d21750 | 174 | #endif |
86a5659e | 175 | |
5bdd7bdd GM |
176 | int emacs_ospeed; |
177 | ||
01d09305 | 178 | void croak P_ ((char *)) NO_RETURN; |
b9c4113e | 179 | |
89723395 GM |
180 | /* Temporary used by `sigblock' when defined in terms of signprocmask. */ |
181 | ||
182 | SIGMASKTYPE sigprocmask_set; | |
183 | ||
f78f1a83 | 184 | |
3480d92b | 185 | #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME) |
f78f1a83 | 186 | |
b6682dd9 | 187 | /* Return the current working directory. Returns NULL on errors. |
f78f1a83 EZ |
188 | Any other returned value must be freed with free. This is used |
189 | only when get_current_dir_name is not defined on the system. */ | |
190 | char* | |
191 | get_current_dir_name () | |
192 | { | |
193 | char *buf; | |
194 | char *pwd; | |
195 | struct stat dotstat, pwdstat; | |
196 | /* If PWD is accurate, use it instead of calling getwd. PWD is | |
197 | sometimes a nicer name, and using it may avoid a fatal error if a | |
198 | parent directory is searchable but not readable. */ | |
199 | if ((pwd = getenv ("PWD")) != 0 | |
200 | && (IS_DIRECTORY_SEP (*pwd) || (*pwd && IS_DEVICE_SEP (pwd[1]))) | |
201 | && stat (pwd, &pwdstat) == 0 | |
202 | && stat (".", &dotstat) == 0 | |
203 | && dotstat.st_ino == pwdstat.st_ino | |
204 | && dotstat.st_dev == pwdstat.st_dev | |
205 | #ifdef MAXPATHLEN | |
206 | && strlen (pwd) < MAXPATHLEN | |
207 | #endif | |
208 | ) | |
209 | { | |
210 | buf = (char *) malloc (strlen (pwd) + 1); | |
211 | if (!buf) | |
212 | return NULL; | |
213 | strcpy (buf, pwd); | |
214 | } | |
215 | #ifdef HAVE_GETCWD | |
216 | else | |
217 | { | |
218 | size_t buf_size = 1024; | |
b6682dd9 | 219 | buf = (char *) malloc (buf_size); |
f78f1a83 EZ |
220 | if (!buf) |
221 | return NULL; | |
222 | for (;;) | |
223 | { | |
224 | if (getcwd (buf, buf_size) == buf) | |
225 | break; | |
226 | if (errno != ERANGE) | |
227 | { | |
228 | int tmp_errno = errno; | |
229 | free (buf); | |
230 | errno = tmp_errno; | |
231 | return NULL; | |
232 | } | |
233 | buf_size *= 2; | |
234 | buf = (char *) realloc (buf, buf_size); | |
235 | if (!buf) | |
236 | return NULL; | |
237 | } | |
238 | } | |
239 | #else | |
240 | else | |
241 | { | |
242 | /* We need MAXPATHLEN here. */ | |
243 | buf = (char *) malloc (MAXPATHLEN + 1); | |
244 | if (!buf) | |
245 | return NULL; | |
246 | if (getwd (buf) == NULL) | |
247 | { | |
248 | int tmp_errno = errno; | |
249 | free (buf); | |
250 | errno = tmp_errno; | |
251 | return NULL; | |
252 | } | |
253 | } | |
254 | #endif | |
255 | return buf; | |
256 | } | |
257 | #endif | |
258 | ||
64e971c3 | 259 | \f |
9628b887 | 260 | /* Discard pending input on all input descriptors. */ |
91bac16a | 261 | |
08633194 | 262 | void |
86a5659e JB |
263 | discard_tty_input () |
264 | { | |
fe03522b | 265 | #ifndef WINDOWSNT |
91bac16a | 266 | struct emacs_tty buf; |
86a5659e JB |
267 | |
268 | if (noninteractive) | |
269 | return; | |
270 | ||
fe03522b | 271 | #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */ |
207bdbdb | 272 | while (dos_keyread () != -1) |
fe03522b | 273 | ; |
207bdbdb | 274 | #else /* not MSDOS */ |
9628b887 | 275 | { |
28d7d09f | 276 | struct tty_display_info *tty; |
9628b887 KL |
277 | for (tty = tty_list; tty; tty = tty->next) |
278 | { | |
0b0d3e0b KL |
279 | if (tty->input) /* Is the device suspended? */ |
280 | { | |
281 | EMACS_GET_TTY (fileno (tty->input), &buf); | |
282 | EMACS_SET_TTY (fileno (tty->input), &buf, 0); | |
283 | } | |
9628b887 KL |
284 | } |
285 | } | |
207bdbdb | 286 | #endif /* not MSDOS */ |
fe03522b | 287 | #endif /* not WINDOWSNT */ |
86a5659e JB |
288 | } |
289 | ||
16c290d8 | 290 | \f |
86a5659e JB |
291 | #ifdef SIGTSTP |
292 | ||
64e971c3 | 293 | /* Arrange for character C to be read as the next input from |
16c290d8 KL |
294 | the terminal. |
295 | XXX What if we have multiple ttys? | |
296 | */ | |
64e971c3 | 297 | |
dfcf069d | 298 | void |
0c2338d8 | 299 | stuff_char (char c) |
86a5659e | 300 | { |
428a555e | 301 | if (! FRAME_TERMCAP_P (SELECTED_FRAME ())) |
23dab951 RS |
302 | return; |
303 | ||
86a5659e JB |
304 | /* Should perhaps error if in batch mode */ |
305 | #ifdef TIOCSTI | |
0b0d3e0b | 306 | ioctl (fileno (CURTTY()->input), TIOCSTI, &c); |
86a5659e | 307 | #else /* no TIOCSTI */ |
71f06467 | 308 | error ("Cannot stuff terminal input characters in this version of Unix"); |
86a5659e JB |
309 | #endif /* no TIOCSTI */ |
310 | } | |
311 | ||
312 | #endif /* SIGTSTP */ | |
64e971c3 | 313 | \f |
08633194 | 314 | void |
16c290d8 | 315 | init_baud_rate (int fd) |
86a5659e | 316 | { |
86a5659e | 317 | if (noninteractive) |
5bdd7bdd | 318 | emacs_ospeed = 0; |
86a5659e JB |
319 | else |
320 | { | |
fe03522b | 321 | #ifdef DOS_NT |
5bdd7bdd | 322 | emacs_ospeed = 15; |
fe03522b | 323 | #else /* not DOS_NT */ |
e04a4e0d JB |
324 | #ifdef HAVE_TERMIOS |
325 | struct termios sg; | |
91bac16a | 326 | |
71f06467 | 327 | sg.c_cflag = B9600; |
16c290d8 | 328 | tcgetattr (fd, &sg); |
5bdd7bdd | 329 | emacs_ospeed = cfgetospeed (&sg); |
7c2fb837 | 330 | #else /* not TERMIOS */ |
e04a4e0d JB |
331 | #ifdef HAVE_TERMIO |
332 | struct termio sg; | |
91bac16a | 333 | |
71f06467 | 334 | sg.c_cflag = B9600; |
e04a4e0d | 335 | #ifdef HAVE_TCATTR |
16c290d8 | 336 | tcgetattr (fd, &sg); |
e04a4e0d | 337 | #else |
16c290d8 | 338 | ioctl (fd, TCGETA, &sg); |
e04a4e0d | 339 | #endif |
5bdd7bdd | 340 | emacs_ospeed = sg.c_cflag & CBAUD; |
7c2fb837 | 341 | #else /* neither TERMIOS nor TERMIO */ |
91bac16a | 342 | struct sgttyb sg; |
177c0ea7 | 343 | |
91bac16a | 344 | sg.sg_ospeed = B9600; |
16c290d8 | 345 | if (ioctl (fd, TIOCGETP, &sg) < 0) |
d7272cff | 346 | abort (); |
5bdd7bdd | 347 | emacs_ospeed = sg.sg_ospeed; |
91bac16a | 348 | #endif /* not HAVE_TERMIO */ |
e04a4e0d | 349 | #endif /* not HAVE_TERMIOS */ |
fe03522b | 350 | #endif /* not DOS_NT */ |
86a5659e | 351 | } |
177c0ea7 | 352 | |
5bdd7bdd GM |
353 | baud_rate = (emacs_ospeed < sizeof baud_convert / sizeof baud_convert[0] |
354 | ? baud_convert[emacs_ospeed] : 9600); | |
86a5659e JB |
355 | if (baud_rate == 0) |
356 | baud_rate = 1200; | |
357 | } | |
358 | ||
16c290d8 | 359 | \f |
86a5659e | 360 | /*ARGSUSED*/ |
dfcf069d | 361 | void |
86a5659e JB |
362 | set_exclusive_use (fd) |
363 | int fd; | |
364 | { | |
365 | #ifdef FIOCLEX | |
366 | ioctl (fd, FIOCLEX, 0); | |
367 | #endif | |
368 | /* Ok to do nothing if this feature does not exist */ | |
369 | } | |
64e971c3 | 370 | \f |
86a5659e JB |
371 | #ifndef subprocesses |
372 | ||
373 | wait_without_blocking () | |
374 | { | |
2a633456 | 375 | #ifdef BSD_SYSTEM |
86a5659e JB |
376 | wait3 (0, WNOHANG | WUNTRACED, 0); |
377 | #else | |
378 | croak ("wait_without_blocking"); | |
379 | #endif | |
380 | synch_process_alive = 0; | |
381 | } | |
382 | ||
383 | #endif /* not subprocesses */ | |
384 | ||
385 | int wait_debugging; /* Set nonzero to make following function work under dbx | |
fe03522b | 386 | (at least for bsd). */ |
86a5659e JB |
387 | |
388 | SIGTYPE | |
389 | wait_for_termination_signal () | |
390 | {} | |
391 | ||
392 | /* Wait for subprocess with process id `pid' to terminate and | |
393 | make sure it will get eliminated (not remain forever as a zombie) */ | |
394 | ||
08633194 | 395 | void |
86a5659e JB |
396 | wait_for_termination (pid) |
397 | int pid; | |
398 | { | |
399 | while (1) | |
400 | { | |
401 | #ifdef subprocesses | |
f2a77c3a | 402 | #if defined (BSD_SYSTEM) || defined (HPUX) |
4c8975ad RS |
403 | /* Note that kill returns -1 even if the process is just a zombie now. |
404 | But inevitably a SIGCHLD interrupt should be generated | |
405 | and child_sig will do wait3 and make the process go away. */ | |
406 | /* There is some indication that there is a bug involved with | |
407 | termination of subprocesses, perhaps involving a kernel bug too, | |
408 | but no idea what it is. Just as a hunch we signal SIGCHLD to see | |
409 | if that causes the problem to go away or get worse. */ | |
410 | sigsetmask (sigmask (SIGCHLD)); | |
411 | if (0 > kill (pid, 0)) | |
fe03522b | 412 | { |
4c8975ad RS |
413 | sigsetmask (SIGEMPTYMASK); |
414 | kill (getpid (), SIGCHLD); | |
415 | break; | |
416 | } | |
417 | if (wait_debugging) | |
418 | sleep (1); | |
419 | else | |
420 | sigpause (SIGEMPTYMASK); | |
2a633456 | 421 | #else /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
8a2a6032 | 422 | #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */ |
9ab714c7 | 423 | sigblock (sigmask (SIGCHLD)); |
59957f85 GM |
424 | errno = 0; |
425 | if (kill (pid, 0) == -1 && errno == ESRCH) | |
9ab714c7 RS |
426 | { |
427 | sigunblock (sigmask (SIGCHLD)); | |
428 | break; | |
429 | } | |
ac3ac859 | 430 | |
0fdcb867 | 431 | sigsuspend (&empty_mask); |
9ab714c7 | 432 | #else /* not POSIX_SIGNALS */ |
4c8975ad RS |
433 | #ifdef HAVE_SYSV_SIGPAUSE |
434 | sighold (SIGCHLD); | |
435 | if (0 > kill (pid, 0)) | |
436 | { | |
437 | sigrelse (SIGCHLD); | |
438 | break; | |
439 | } | |
440 | sigpause (SIGCHLD); | |
441 | #else /* not HAVE_SYSV_SIGPAUSE */ | |
fe03522b RS |
442 | #ifdef WINDOWSNT |
443 | wait (0); | |
444 | break; | |
445 | #else /* not WINDOWSNT */ | |
4c8975ad | 446 | if (0 > kill (pid, 0)) |
86a5659e | 447 | break; |
4c8975ad RS |
448 | /* Using sleep instead of pause avoids timing error. |
449 | If the inferior dies just before the sleep, | |
450 | we lose just one second. */ | |
451 | sleep (1); | |
fe03522b | 452 | #endif /* not WINDOWSNT */ |
4c8975ad | 453 | #endif /* not HAVE_SYSV_SIGPAUSE */ |
9ab714c7 | 454 | #endif /* not POSIX_SIGNALS */ |
2a633456 | 455 | #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */ |
86a5659e | 456 | #else /* not subprocesses */ |
15614e61 RS |
457 | #if __DJGPP__ > 1 |
458 | break; | |
459 | #else /* not __DJGPP__ > 1 */ | |
86a5659e JB |
460 | if (kill (pid, 0) < 0) |
461 | break; | |
462 | wait (0); | |
15614e61 | 463 | #endif /* not __DJGPP__ > 1*/ |
86a5659e JB |
464 | #endif /* not subprocesses */ |
465 | } | |
466 | } | |
467 | ||
468 | #ifdef subprocesses | |
469 | ||
470 | /* | |
471 | * flush any pending output | |
472 | * (may flush input as well; it does not matter the way we use it) | |
473 | */ | |
177c0ea7 | 474 | |
08633194 | 475 | void |
86a5659e JB |
476 | flush_pending_output (channel) |
477 | int channel; | |
478 | { | |
479 | #ifdef HAVE_TERMIOS | |
480 | /* If we try this, we get hit with SIGTTIN, because | |
481 | the child's tty belongs to the child's pgrp. */ | |
482 | #else | |
483 | #ifdef TCFLSH | |
484 | ioctl (channel, TCFLSH, 1); | |
485 | #else | |
486 | #ifdef TIOCFLUSH | |
487 | int zero = 0; | |
488 | /* 3rd arg should be ignored | |
489 | but some 4.2 kernels actually want the address of an int | |
490 | and nonzero means something different. */ | |
491 | ioctl (channel, TIOCFLUSH, &zero); | |
492 | #endif | |
493 | #endif | |
494 | #endif | |
495 | } | |
64e971c3 | 496 | \f |
86a5659e JB |
497 | /* Set up the terminal at the other end of a pseudo-terminal that |
498 | we will be controlling an inferior through. | |
499 | It should not echo or do line-editing, since that is done | |
500 | in Emacs. No padding needed for insertion into an Emacs buffer. */ | |
501 | ||
08633194 | 502 | void |
86a5659e JB |
503 | child_setup_tty (out) |
504 | int out; | |
505 | { | |
fe03522b | 506 | #ifndef DOS_NT |
91bac16a JB |
507 | struct emacs_tty s; |
508 | ||
509 | EMACS_GET_TTY (out, &s); | |
86a5659e | 510 | |
31be8d24 | 511 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
91bac16a JB |
512 | s.main.c_oflag |= OPOST; /* Enable output postprocessing */ |
513 | s.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL on output */ | |
9d4e5eea | 514 | #ifdef NLDLY |
07cfc4e7 GM |
515 | /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html |
516 | Some versions of GNU Hurd do not have FFDLY? */ | |
517 | #ifdef FFDLY | |
91bac16a JB |
518 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY); |
519 | /* No output delays */ | |
07cfc4e7 GM |
520 | #else |
521 | s.main.c_oflag &= ~(NLDLY|CRDLY|TABDLY|BSDLY|VTDLY); | |
522 | /* No output delays */ | |
523 | #endif | |
9d4e5eea | 524 | #endif |
91bac16a JB |
525 | s.main.c_lflag &= ~ECHO; /* Disable echo */ |
526 | s.main.c_lflag |= ISIG; /* Enable signals */ | |
9d4e5eea RS |
527 | #ifdef IUCLC |
528 | s.main.c_iflag &= ~IUCLC; /* Disable downcasing on input. */ | |
529 | #endif | |
f7097b2a RS |
530 | #ifdef ISTRIP |
531 | s.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ | |
532 | #endif | |
23e4c8be | 533 | #ifdef OLCUC |
9d4e5eea RS |
534 | s.main.c_oflag &= ~OLCUC; /* Disable upcasing on output. */ |
535 | #endif | |
f7097b2a | 536 | s.main.c_oflag &= ~TAB3; /* Disable tab expansion */ |
1bf96fb5 | 537 | s.main.c_cflag = (s.main.c_cflag & ~CSIZE) | CS8; /* Don't strip 8th bit */ |
91bac16a JB |
538 | s.main.c_lflag |= ICANON; /* Enable erase/kill and eof processing */ |
539 | s.main.c_cc[VEOF] = 04; /* insure that EOF is Control-D */ | |
441f6399 RS |
540 | s.main.c_cc[VERASE] = CDISABLE; /* disable erase processing */ |
541 | s.main.c_cc[VKILL] = CDISABLE; /* disable kill processing */ | |
91bac16a | 542 | |
86a5659e | 543 | #ifdef HPUX |
91bac16a | 544 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e | 545 | #endif /* HPUX */ |
91bac16a | 546 | |
dfe598b5 RS |
547 | #ifdef SIGNALS_VIA_CHARACTERS |
548 | /* the QUIT and INTR character are used in process_send_signal | |
549 | so set them here to something useful. */ | |
fa51fa32 | 550 | if (s.main.c_cc[VQUIT] == CDISABLE) |
dfe598b5 | 551 | s.main.c_cc[VQUIT] = '\\'&037; /* Control-\ */ |
fa51fa32 | 552 | if (s.main.c_cc[VINTR] == CDISABLE) |
dfe598b5 RS |
553 | s.main.c_cc[VINTR] = 'C'&037; /* Control-C */ |
554 | #endif /* not SIGNALS_VIA_CHARACTERS */ | |
555 | ||
86a5659e JB |
556 | #ifdef AIX |
557 | /* AIX enhanced edit loses NULs, so disable it */ | |
558 | #ifndef IBMR2AIX | |
91bac16a JB |
559 | s.main.c_line = 0; |
560 | s.main.c_iflag &= ~ASCEDIT; | |
86a5659e JB |
561 | #endif |
562 | /* Also, PTY overloads NUL and BREAK. | |
563 | don't ignore break, but don't signal either, so it looks like NUL. */ | |
91bac16a JB |
564 | s.main.c_iflag &= ~IGNBRK; |
565 | s.main.c_iflag &= ~BRKINT; | |
dfe598b5 RS |
566 | /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here |
567 | unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional | |
568 | would force it to 0377. That looks like duplicated code. */ | |
569 | #ifndef SIGNALS_VIA_CHARACTERS | |
e6cc3307 | 570 | /* QUIT and INTR work better as signals, so disable character forms */ |
fa51fa32 KS |
571 | s.main.c_cc[VQUIT] = CDISABLE; |
572 | s.main.c_cc[VINTR] = CDISABLE; | |
91bac16a | 573 | s.main.c_lflag &= ~ISIG; |
e6cc3307 | 574 | #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */ |
fa51fa32 | 575 | s.main.c_cc[VEOL] = CDISABLE; |
91bac16a | 576 | s.main.c_cflag = (s.main.c_cflag & ~CBAUD) | B9600; /* baud rate sanity */ |
86a5659e JB |
577 | #endif /* AIX */ |
578 | ||
579 | #else /* not HAVE_TERMIO */ | |
91bac16a JB |
580 | |
581 | s.main.sg_flags &= ~(ECHO | CRMOD | ANYP | ALLDELAY | RAW | LCASE | |
582 | | CBREAK | TANDEM); | |
a00d5589 | 583 | s.main.sg_flags |= LPASS8; |
91bac16a JB |
584 | s.main.sg_erase = 0377; |
585 | s.main.sg_kill = 0377; | |
1bf96fb5 | 586 | s.lmode = LLITOUT | s.lmode; /* Don't strip 8th bit */ |
91bac16a | 587 | |
86a5659e JB |
588 | #endif /* not HAVE_TERMIO */ |
589 | ||
91bac16a | 590 | EMACS_SET_TTY (out, &s, 0); |
86a5659e | 591 | |
fe03522b | 592 | #endif /* not DOS_NT */ |
86a5659e | 593 | } |
86a5659e JB |
594 | |
595 | #endif /* subprocesses */ | |
64e971c3 | 596 | \f |
86a5659e JB |
597 | /* Record a signal code and the handler for it. */ |
598 | struct save_signal | |
599 | { | |
600 | int code; | |
35a05cca | 601 | SIGTYPE (*handler) P_ ((int)); |
86a5659e JB |
602 | }; |
603 | ||
35a05cca AS |
604 | static void save_signal_handlers P_ ((struct save_signal *)); |
605 | static void restore_signal_handlers P_ ((struct save_signal *)); | |
606 | ||
86a5659e JB |
607 | /* Suspend the Emacs process; give terminal to its superior. */ |
608 | ||
08633194 | 609 | void |
86a5659e JB |
610 | sys_suspend () |
611 | { | |
c4ea52a6 | 612 | #if defined (SIGTSTP) && !defined (MSDOS) |
86a5659e | 613 | |
5a570e37 | 614 | { |
e89a2cd5 | 615 | int pgrp = EMACS_GETPGRP (0); |
5a570e37 JB |
616 | EMACS_KILLPG (pgrp, SIGTSTP); |
617 | } | |
86a5659e JB |
618 | |
619 | #else /* No SIGTSTP */ | |
620 | #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */ | |
621 | ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */ | |
622 | kill (getpid (), SIGQUIT); | |
623 | ||
624 | #else /* No SIGTSTP or USG_JOBCTRL */ | |
625 | ||
626 | /* On a system where suspending is not implemented, | |
627 | instead fork a subshell and let it talk directly to the terminal | |
628 | while we wait. */ | |
a0932daa KH |
629 | sys_subshell (); |
630 | ||
631 | #endif /* no USG_JOBCTRL */ | |
632 | #endif /* no SIGTSTP */ | |
a0932daa KH |
633 | } |
634 | ||
635 | /* Fork a subshell. */ | |
636 | ||
08633194 | 637 | void |
a0932daa KH |
638 | sys_subshell () |
639 | { | |
ad00c243 | 640 | #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
a0932daa KH |
641 | int st; |
642 | char oldwd[MAXPATHLEN+1]; /* Fixed length is safe on MSDOS. */ | |
643 | #endif | |
efa04277 | 644 | int pid; |
86a5659e | 645 | struct save_signal saved_handlers[5]; |
efa04277 RS |
646 | Lisp_Object dir; |
647 | unsigned char *str = 0; | |
648 | int len; | |
86a5659e JB |
649 | |
650 | saved_handlers[0].code = SIGINT; | |
651 | saved_handlers[1].code = SIGQUIT; | |
652 | saved_handlers[2].code = SIGTERM; | |
653 | #ifdef SIGIO | |
654 | saved_handlers[3].code = SIGIO; | |
655 | saved_handlers[4].code = 0; | |
656 | #else | |
657 | saved_handlers[3].code = 0; | |
658 | #endif | |
659 | ||
efa04277 RS |
660 | /* Mentioning current_buffer->buffer would mean including buffer.h, |
661 | which somehow wedges the hp compiler. So instead... */ | |
662 | ||
663 | dir = intern ("default-directory"); | |
0e7e7a58 | 664 | if (NILP (Fboundp (dir))) |
efa04277 RS |
665 | goto xyzzy; |
666 | dir = Fsymbol_value (dir); | |
914e81a2 | 667 | if (!STRINGP (dir)) |
efa04277 RS |
668 | goto xyzzy; |
669 | ||
670 | dir = expand_and_dir_to_file (Funhandled_file_name_directory (dir), Qnil); | |
d5db4077 KR |
671 | str = (unsigned char *) alloca (SCHARS (dir) + 2); |
672 | len = SCHARS (dir); | |
673 | bcopy (SDATA (dir), str, len); | |
efa04277 RS |
674 | if (str[len - 1] != '/') str[len++] = '/'; |
675 | str[len] = 0; | |
676 | xyzzy: | |
677 | ||
ad00c243 | 678 | #ifdef DOS_NT |
7964ba9e | 679 | pid = 0; |
718ca3cf RS |
680 | #if __DJGPP__ > 1 |
681 | save_signal_handlers (saved_handlers); | |
682 | synch_process_alive = 1; | |
683 | #endif /* __DJGPP__ > 1 */ | |
177c0ea7 | 684 | #else |
efa04277 | 685 | pid = vfork (); |
86a5659e JB |
686 | if (pid == -1) |
687 | error ("Can't spawn subshell"); | |
7964ba9e RS |
688 | #endif |
689 | ||
86a5659e JB |
690 | if (pid == 0) |
691 | { | |
7964ba9e | 692 | char *sh = 0; |
86a5659e | 693 | |
ad00c243 | 694 | #ifdef DOS_NT /* MW, Aug 1993 */ |
207bdbdb | 695 | getwd (oldwd); |
7964ba9e RS |
696 | if (sh == 0) |
697 | sh = (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */ | |
207bdbdb | 698 | #endif |
7964ba9e RS |
699 | if (sh == 0) |
700 | sh = (char *) egetenv ("SHELL"); | |
86a5659e JB |
701 | if (sh == 0) |
702 | sh = "sh"; | |
207bdbdb | 703 | |
86a5659e | 704 | /* Use our buffer's default directory for the subshell. */ |
efa04277 | 705 | if (str) |
074c438c | 706 | chdir ((char *) str); |
efa04277 | 707 | |
86a5659e JB |
708 | #ifdef subprocesses |
709 | close_process_descs (); /* Close Emacs's pipes/ptys */ | |
710 | #endif | |
1593c2fe | 711 | |
6f8b4d01 | 712 | #ifdef SET_EMACS_PRIORITY |
1593c2fe | 713 | { |
31ade731 | 714 | extern EMACS_INT emacs_priority; |
1593c2fe | 715 | |
6f8b4d01 | 716 | if (emacs_priority < 0) |
1593c2fe JB |
717 | nice (-emacs_priority); |
718 | } | |
719 | #endif | |
720 | ||
fe03522b | 721 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
c0917202 | 722 | { |
48178f9a EZ |
723 | char *epwd = getenv ("PWD"); |
724 | char old_pwd[MAXPATHLEN+1+4]; | |
c0917202 EZ |
725 | |
726 | /* If PWD is set, pass it with corrected value. */ | |
48178f9a | 727 | if (epwd) |
c0917202 | 728 | { |
48178f9a | 729 | strcpy (old_pwd, epwd); |
c0917202 EZ |
730 | if (str[len - 1] == '/') |
731 | str[len - 1] = '\0'; | |
732 | setenv ("PWD", str, 1); | |
733 | } | |
734 | st = system (sh); | |
735 | chdir (oldwd); | |
48178f9a | 736 | if (epwd) |
c0917202 EZ |
737 | putenv (old_pwd); /* restore previous value */ |
738 | } | |
207bdbdb | 739 | #else /* not MSDOS */ |
fe03522b | 740 | #ifdef WINDOWSNT |
fe03522b RS |
741 | /* Waits for process completion */ |
742 | pid = _spawnlp (_P_WAIT, sh, sh, NULL); | |
ad00c243 | 743 | chdir (oldwd); |
fe03522b RS |
744 | if (pid == -1) |
745 | write (1, "Can't execute subshell", 22); | |
fe03522b | 746 | #else /* not WINDOWSNT */ |
e120ea40 | 747 | execlp (sh, sh, (char *) 0); |
86a5659e JB |
748 | write (1, "Can't execute subshell", 22); |
749 | _exit (1); | |
fe03522b | 750 | #endif /* not WINDOWSNT */ |
207bdbdb | 751 | #endif /* not MSDOS */ |
86a5659e JB |
752 | } |
753 | ||
718ca3cf RS |
754 | /* Do this now if we did not do it before. */ |
755 | #if !defined (MSDOS) || __DJGPP__ == 1 | |
86a5659e | 756 | save_signal_handlers (saved_handlers); |
ffafc793 | 757 | synch_process_alive = 1; |
718ca3cf RS |
758 | #endif |
759 | ||
ad00c243 | 760 | #ifndef DOS_NT |
86a5659e | 761 | wait_for_termination (pid); |
7964ba9e | 762 | #endif |
86a5659e | 763 | restore_signal_handlers (saved_handlers); |
718ca3cf | 764 | synch_process_alive = 0; |
86a5659e JB |
765 | } |
766 | ||
35a05cca | 767 | static void |
86a5659e JB |
768 | save_signal_handlers (saved_handlers) |
769 | struct save_signal *saved_handlers; | |
770 | { | |
771 | while (saved_handlers->code) | |
772 | { | |
508b171c | 773 | saved_handlers->handler |
35a05cca | 774 | = (SIGTYPE (*) P_ ((int))) signal (saved_handlers->code, SIG_IGN); |
86a5659e JB |
775 | saved_handlers++; |
776 | } | |
777 | } | |
778 | ||
35a05cca | 779 | static void |
86a5659e JB |
780 | restore_signal_handlers (saved_handlers) |
781 | struct save_signal *saved_handlers; | |
782 | { | |
783 | while (saved_handlers->code) | |
784 | { | |
785 | signal (saved_handlers->code, saved_handlers->handler); | |
786 | saved_handlers++; | |
787 | } | |
788 | } | |
789 | \f | |
4d553a13 KL |
790 | #ifndef SIGIO |
791 | /* If SIGIO is broken, don't do anything. */ | |
792 | void | |
793 | init_sigio (int fd) | |
794 | { | |
795 | } | |
796 | ||
797 | void | |
798 | reset_sigio (int fd) | |
799 | { | |
800 | } | |
801 | ||
802 | void | |
803 | request_sigio (void) | |
804 | { | |
805 | } | |
806 | ||
807 | void | |
808 | unrequest_sigio (void) | |
809 | { | |
810 | } | |
811 | ||
812 | #else | |
86a5659e JB |
813 | #ifdef F_SETFL |
814 | ||
819b8f00 | 815 | int old_fcntl_flags[MAXDESC]; |
86a5659e | 816 | |
08633194 | 817 | void |
23dab951 RS |
818 | init_sigio (fd) |
819 | int fd; | |
86a5659e JB |
820 | { |
821 | #ifdef FASYNC | |
819b8f00 KL |
822 | old_fcntl_flags[fd] = fcntl (fd, F_GETFL, 0) & ~FASYNC; |
823 | fcntl (fd, F_SETFL, old_fcntl_flags[fd] | FASYNC); | |
86a5659e | 824 | #endif |
23dab951 | 825 | interrupts_deferred = 0; |
86a5659e JB |
826 | } |
827 | ||
590034f9 | 828 | void |
0a125897 KL |
829 | reset_sigio (fd) |
830 | int fd; | |
86a5659e | 831 | { |
4d553a13 | 832 | #ifdef FASYNC |
819b8f00 | 833 | fcntl (fd, F_SETFL, old_fcntl_flags[fd]); |
4d553a13 | 834 | #endif |
86a5659e JB |
835 | } |
836 | ||
eb8c3be9 | 837 | #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */ |
428a555e | 838 | /* XXX Uhm, FASYNC is not used anymore here. */ |
6d8cf830 | 839 | /* XXX Yeah, but you need it for SIGIO, don't you? */ |
86a5659e | 840 | |
08633194 | 841 | void |
86a5659e JB |
842 | request_sigio () |
843 | { | |
6bbba5a6 | 844 | if (noninteractive) |
23dab951 RS |
845 | return; |
846 | ||
86a5659e | 847 | #ifdef SIGWINCH |
e065a56e | 848 | sigunblock (sigmask (SIGWINCH)); |
86a5659e | 849 | #endif |
0a125897 | 850 | sigunblock (sigmask (SIGIO)); |
86a5659e JB |
851 | |
852 | interrupts_deferred = 0; | |
853 | } | |
854 | ||
08633194 | 855 | void |
0a125897 | 856 | unrequest_sigio (void) |
428a555e | 857 | { |
6bbba5a6 KL |
858 | if (noninteractive) |
859 | return; | |
860 | ||
861 | #if 0 /* XXX What's wrong with blocking SIGIO under X? */ | |
862 | if (x_display_list) | |
23dab951 | 863 | return; |
428a555e | 864 | #endif |
6bbba5a6 | 865 | |
86a5659e | 866 | #ifdef SIGWINCH |
e065a56e | 867 | sigblock (sigmask (SIGWINCH)); |
86a5659e | 868 | #endif |
0a125897 | 869 | sigblock (sigmask (SIGIO)); |
86a5659e JB |
870 | interrupts_deferred = 1; |
871 | } | |
872 | ||
873 | #else /* no FASYNC */ | |
feb67dfe | 874 | #ifndef MSDOS |
25ab68af | 875 | |
08633194 | 876 | void |
86a5659e JB |
877 | request_sigio () |
878 | { | |
6e5b2385 | 879 | if (noninteractive || read_socket_hook) |
23dab951 RS |
880 | return; |
881 | ||
86a5659e JB |
882 | croak ("request_sigio"); |
883 | } | |
177c0ea7 | 884 | |
08633194 | 885 | void |
86a5659e JB |
886 | unrequest_sigio () |
887 | { | |
6e5b2385 | 888 | if (noninteractive || read_socket_hook) |
23dab951 RS |
889 | return; |
890 | ||
86a5659e JB |
891 | croak ("unrequest_sigio"); |
892 | } | |
feb67dfe EZ |
893 | |
894 | #endif /* MSDOS */ | |
86a5659e JB |
895 | #endif /* FASYNC */ |
896 | #endif /* F_SETFL */ | |
4d553a13 | 897 | #endif /* SIGIO */ |
86a5659e | 898 | \f |
9ae8f997 JB |
899 | /* Saving and restoring the process group of Emacs's terminal. */ |
900 | ||
0ba73609 | 901 | #ifdef BSD_PGRPS |
9ae8f997 JB |
902 | |
903 | /* The process group of which Emacs was a member when it initially | |
904 | started. | |
905 | ||
906 | If Emacs was in its own process group (i.e. inherited_pgroup == | |
907 | getpid ()), then we know we're running under a shell with job | |
908 | control (Emacs would never be run as part of a pipeline). | |
909 | Everything is fine. | |
910 | ||
911 | If Emacs was not in its own process group, then we know we're | |
912 | running under a shell (or a caller) that doesn't know how to | |
913 | separate itself from Emacs (like sh). Emacs must be in its own | |
914 | process group in order to receive SIGIO correctly. In this | |
915 | situation, we put ourselves in our own pgroup, forcibly set the | |
916 | tty's pgroup to our pgroup, and make sure to restore and reinstate | |
917 | the tty's pgroup just like any other terminal setting. If | |
918 | inherited_group was not the tty's pgroup, then we'll get a | |
919 | SIGTTmumble when we try to change the tty's pgroup, and a CONT if | |
4edd8a5c KL |
920 | it goes foreground in the future, which is what should happen. |
921 | ||
922 | This variable is initialized in emacs.c. */ | |
9ae8f997 JB |
923 | int inherited_pgroup; |
924 | ||
4edd8a5c KL |
925 | /* Split off the foreground process group to Emacs alone. When we are |
926 | in the foreground, but not started in our own process group, | |
927 | redirect the tty device handle FD to point to our own process | |
928 | group. We need to be in our own process group to receive SIGIO | |
929 | properly. */ | |
75a8734b | 930 | static void |
16c290d8 | 931 | narrow_foreground_group (int fd) |
9ae8f997 JB |
932 | { |
933 | int me = getpid (); | |
934 | ||
4edd8a5c | 935 | setpgrp (0, inherited_pgroup); |
3453bb3a KL |
936 | #if 0 |
937 | /* XXX inherited_pgroup should not be zero here, but GTK seems to | |
938 | mess this up. */ | |
819b8f00 | 939 | if (! inherited_pgroup) |
4edd8a5c | 940 | abort (); /* Should not happen. */ |
3453bb3a | 941 | #endif |
9ae8f997 | 942 | if (inherited_pgroup != me) |
4edd8a5c KL |
943 | EMACS_SET_TTY_PGRP (fd, &me); /* XXX This only works on the controlling tty. */ |
944 | setpgrp (0, me); | |
9ae8f997 JB |
945 | } |
946 | ||
947 | /* Set the tty to our original foreground group. */ | |
75a8734b | 948 | static void |
16c290d8 | 949 | widen_foreground_group (int fd) |
9ae8f997 JB |
950 | { |
951 | if (inherited_pgroup != getpid ()) | |
16c290d8 | 952 | EMACS_SET_TTY_PGRP (fd, &inherited_pgroup); |
4edd8a5c | 953 | setpgrp (0, inherited_pgroup); |
9ae8f997 JB |
954 | } |
955 | ||
0ba73609 | 956 | #endif /* BSD_PGRPS */ |
9ae8f997 | 957 | \f |
68936329 JB |
958 | /* Getting and setting emacs_tty structures. */ |
959 | ||
960 | /* Set *TC to the parameters associated with the terminal FD. | |
961 | Return zero if all's well, or -1 if we ran into an error we | |
962 | couldn't deal with. */ | |
963 | int | |
964 | emacs_get_tty (fd, settings) | |
965 | int fd; | |
966 | struct emacs_tty *settings; | |
967 | { | |
968 | /* Retrieve the primary parameters - baud rate, character size, etcetera. */ | |
969 | #ifdef HAVE_TCATTR | |
970 | /* We have those nifty POSIX tcmumbleattr functions. */ | |
1d9f9f9e | 971 | bzero (&settings->main, sizeof (settings->main)); |
68936329 JB |
972 | if (tcgetattr (fd, &settings->main) < 0) |
973 | return -1; | |
974 | ||
975 | #else | |
976 | #ifdef HAVE_TERMIO | |
977 | /* The SYSV-style interface? */ | |
978 | if (ioctl (fd, TCGETA, &settings->main) < 0) | |
979 | return -1; | |
980 | ||
68936329 | 981 | #else |
fe03522b | 982 | #ifndef DOS_NT |
68936329 JB |
983 | /* I give up - I hope you have the BSD ioctls. */ |
984 | if (ioctl (fd, TIOCGETP, &settings->main) < 0) | |
985 | return -1; | |
fe03522b | 986 | #endif /* not DOS_NT */ |
68936329 | 987 | #endif |
68936329 JB |
988 | #endif |
989 | ||
990 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 991 | #ifdef HAVE_LTCHARS |
68936329 JB |
992 | if (ioctl (fd, TIOCGLTC, &settings->ltchars) < 0) |
993 | return -1; | |
994 | #endif | |
995 | ||
996 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 997 | #ifdef HAVE_TCHARS |
68936329 JB |
998 | if (ioctl (fd, TIOCGETC, &settings->tchars) < 0 |
999 | || ioctl (fd, TIOCLGET, &settings->lmode) < 0) | |
1000 | return -1; | |
1001 | #endif | |
1002 | ||
1003 | /* We have survived the tempest. */ | |
1004 | return 0; | |
1005 | } | |
1006 | ||
1007 | ||
1008 | /* Set the parameters of the tty on FD according to the contents of | |
394049ec | 1009 | *SETTINGS. If FLUSHP is non-zero, we discard input. |
68936329 | 1010 | Return 0 if all went well, and -1 if anything failed. */ |
394049ec | 1011 | |
68936329 | 1012 | int |
394049ec | 1013 | emacs_set_tty (fd, settings, flushp) |
68936329 JB |
1014 | int fd; |
1015 | struct emacs_tty *settings; | |
394049ec | 1016 | int flushp; |
68936329 JB |
1017 | { |
1018 | /* Set the primary parameters - baud rate, character size, etcetera. */ | |
1019 | #ifdef HAVE_TCATTR | |
e6cc3307 | 1020 | int i; |
68936329 JB |
1021 | /* We have those nifty POSIX tcmumbleattr functions. |
1022 | William J. Smith <wjs@wiis.wang.com> writes: | |
c4ea52a6 | 1023 | "POSIX 1003.1 defines tcsetattr to return success if it was |
68936329 JB |
1024 | able to perform any of the requested actions, even if some |
1025 | of the requested actions could not be performed. | |
1026 | We must read settings back to ensure tty setup properly. | |
1027 | AIX requires this to keep tty from hanging occasionally." */ | |
eb8c3be9 | 1028 | /* This make sure that we don't loop indefinitely in here. */ |
e6cc3307 | 1029 | for (i = 0 ; i < 10 ; i++) |
394049ec | 1030 | if (tcsetattr (fd, flushp ? TCSAFLUSH : TCSADRAIN, &settings->main) < 0) |
68936329 JB |
1031 | { |
1032 | if (errno == EINTR) | |
1033 | continue; | |
1034 | else | |
1035 | return -1; | |
1036 | } | |
1037 | else | |
1038 | { | |
1039 | struct termios new; | |
1040 | ||
1d9f9f9e | 1041 | bzero (&new, sizeof (new)); |
68936329 JB |
1042 | /* Get the current settings, and see if they're what we asked for. */ |
1043 | tcgetattr (fd, &new); | |
e6cc3307 RS |
1044 | /* We cannot use memcmp on the whole structure here because under |
1045 | * aix386 the termios structure has some reserved field that may | |
1046 | * not be filled in. | |
1047 | */ | |
1048 | if ( new.c_iflag == settings->main.c_iflag | |
1049 | && new.c_oflag == settings->main.c_oflag | |
1050 | && new.c_cflag == settings->main.c_cflag | |
1051 | && new.c_lflag == settings->main.c_lflag | |
c4ea52a6 | 1052 | && memcmp (new.c_cc, settings->main.c_cc, NCCS) == 0) |
68936329 | 1053 | break; |
e6cc3307 RS |
1054 | else |
1055 | continue; | |
68936329 JB |
1056 | } |
1057 | ||
1058 | #else | |
1059 | #ifdef HAVE_TERMIO | |
1060 | /* The SYSV-style interface? */ | |
394049ec | 1061 | if (ioctl (fd, flushp ? TCSETAF : TCSETAW, &settings->main) < 0) |
68936329 JB |
1062 | return -1; |
1063 | ||
68936329 | 1064 | #else |
fe03522b | 1065 | #ifndef DOS_NT |
68936329 | 1066 | /* I give up - I hope you have the BSD ioctls. */ |
394049ec | 1067 | if (ioctl (fd, (flushp) ? TIOCSETP : TIOCSETN, &settings->main) < 0) |
68936329 | 1068 | return -1; |
fe03522b | 1069 | #endif /* not DOS_NT */ |
68936329 | 1070 | |
68936329 JB |
1071 | #endif |
1072 | #endif | |
1073 | ||
1074 | /* Suivant - Do we have to get struct ltchars data? */ | |
50b8cf60 | 1075 | #ifdef HAVE_LTCHARS |
68936329 JB |
1076 | if (ioctl (fd, TIOCSLTC, &settings->ltchars) < 0) |
1077 | return -1; | |
1078 | #endif | |
1079 | ||
1080 | /* How about a struct tchars and a wordful of lmode bits? */ | |
50b8cf60 | 1081 | #ifdef HAVE_TCHARS |
68936329 JB |
1082 | if (ioctl (fd, TIOCSETC, &settings->tchars) < 0 |
1083 | || ioctl (fd, TIOCLSET, &settings->lmode) < 0) | |
1084 | return -1; | |
1085 | #endif | |
177c0ea7 | 1086 | |
68936329 JB |
1087 | /* We have survived the tempest. */ |
1088 | return 0; | |
1089 | } | |
1090 | ||
1091 | \f | |
86a5659e JB |
1092 | |
1093 | #ifdef F_SETOWN | |
819b8f00 | 1094 | int old_fcntl_owner[MAXDESC]; |
86a5659e JB |
1095 | #endif /* F_SETOWN */ |
1096 | ||
86a5659e JB |
1097 | /* This may also be defined in stdio, |
1098 | but if so, this does no harm, | |
1099 | and using the same name avoids wasting the other one's space. */ | |
1100 | ||
9d9a7716 | 1101 | #if defined (USG) |
86a5659e JB |
1102 | unsigned char _sobuf[BUFSIZ+8]; |
1103 | #else | |
1104 | char _sobuf[BUFSIZ]; | |
1105 | #endif | |
177c0ea7 | 1106 | |
50b8cf60 | 1107 | #ifdef HAVE_LTCHARS |
86a5659e JB |
1108 | static struct ltchars new_ltchars = {-1,-1,-1,-1,-1,-1}; |
1109 | #endif | |
50b8cf60 | 1110 | #ifdef HAVE_TCHARS |
4ec5cb58 | 1111 | static struct tchars new_tchars = {-1,-1,-1,-1,-1,-1}; |
177c0ea7 | 1112 | #endif |
86a5659e | 1113 | |
da8e1115 KL |
1114 | /* Initialize the terminal mode on all tty devices that are currently |
1115 | open. */ | |
1116 | ||
08633194 | 1117 | void |
28d440ab KL |
1118 | init_all_sys_modes (void) |
1119 | { | |
28d7d09f | 1120 | struct tty_display_info *tty; |
16c290d8 | 1121 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 1122 | init_sys_modes (tty); |
28d440ab KL |
1123 | } |
1124 | ||
da8e1115 KL |
1125 | /* Initialize the terminal mode on the given tty device. */ |
1126 | ||
28d440ab | 1127 | void |
9628b887 | 1128 | init_sys_modes (tty_out) |
28d7d09f | 1129 | struct tty_display_info *tty_out; |
86a5659e | 1130 | { |
91bac16a JB |
1131 | struct emacs_tty tty; |
1132 | ||
4ec5cb58 RS |
1133 | Vtty_erase_char = Qnil; |
1134 | ||
86a5659e JB |
1135 | if (noninteractive) |
1136 | return; | |
1137 | ||
0b0d3e0b KL |
1138 | if (!tty_out->output) |
1139 | return; /* The tty is suspended. */ | |
1140 | ||
0ba73609 | 1141 | #ifdef BSD_PGRPS |
428a555e KL |
1142 | #if 0 |
1143 | /* read_socket_hook is not global anymore. I think doing this | |
1144 | unconditionally will not cause any problems. */ | |
2246281f | 1145 | if (! read_socket_hook && EQ (Vinitial_window_system, Qnil)) |
428a555e | 1146 | #endif |
0b0d3e0b | 1147 | narrow_foreground_group (fileno (tty_out->input)); |
9ae8f997 JB |
1148 | #endif |
1149 | ||
2246281f KL |
1150 | if (! tty_out->old_tty) |
1151 | tty_out->old_tty = (struct emacs_tty *) xmalloc (sizeof (struct emacs_tty)); | |
fca177d4 | 1152 | |
0b0d3e0b | 1153 | EMACS_GET_TTY (fileno (tty_out->input), tty_out->old_tty); |
23dab951 | 1154 | |
2246281f | 1155 | tty = *tty_out->old_tty; |
86a5659e | 1156 | |
31be8d24 | 1157 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
2246281f | 1158 | XSETINT (Vtty_erase_char, tty.main.c_cc[VERASE]); |
4ec5cb58 | 1159 | |
2246281f KL |
1160 | tty.main.c_iflag |= (IGNBRK); /* Ignore break condition */ |
1161 | tty.main.c_iflag &= ~ICRNL; /* Disable map of CR to NL on input */ | |
7f371164 RS |
1162 | #ifdef INLCR /* I'm just being cautious, |
1163 | since I can't check how widespread INLCR is--rms. */ | |
2246281f | 1164 | tty.main.c_iflag &= ~INLCR; /* Disable map of NL to CR on input */ |
7f371164 | 1165 | #endif |
86a5659e | 1166 | #ifdef ISTRIP |
2246281f | 1167 | tty.main.c_iflag &= ~ISTRIP; /* don't strip 8th bit on input */ |
86a5659e | 1168 | #endif |
2246281f KL |
1169 | tty.main.c_lflag &= ~ECHO; /* Disable echo */ |
1170 | tty.main.c_lflag &= ~ICANON; /* Disable erase/kill processing */ | |
e2b40c23 | 1171 | #ifdef IEXTEN |
2246281f | 1172 | tty.main.c_lflag &= ~IEXTEN; /* Disable other editing characters. */ |
e2b40c23 | 1173 | #endif |
2246281f KL |
1174 | tty.main.c_lflag |= ISIG; /* Enable signals */ |
1175 | if (tty_out->flow_control) | |
1176 | { | |
1177 | tty.main.c_iflag |= IXON; /* Enable start/stop output control */ | |
86a5659e | 1178 | #ifdef IXANY |
2246281f | 1179 | tty.main.c_iflag &= ~IXANY; |
86a5659e | 1180 | #endif /* IXANY */ |
2246281f KL |
1181 | } |
1182 | else | |
1183 | tty.main.c_iflag &= ~IXON; /* Disable start/stop output control */ | |
1184 | tty.main.c_oflag &= ~ONLCR; /* Disable map of NL to CR-NL | |
1185 | on output */ | |
1186 | tty.main.c_oflag &= ~TAB3; /* Disable tab expansion */ | |
86a5659e | 1187 | #ifdef CS8 |
2246281f KL |
1188 | if (tty_out->meta_key) |
1189 | { | |
1190 | tty.main.c_cflag |= CS8; /* allow 8th bit on input */ | |
1191 | tty.main.c_cflag &= ~PARENB;/* Don't check parity */ | |
1192 | } | |
86a5659e | 1193 | #endif |
2246281f KL |
1194 | if (tty_out->input == stdin) |
1195 | { | |
1196 | tty.main.c_cc[VINTR] = quit_char; /* C-g (usually) gives SIGINT */ | |
1197 | /* Set up C-g for both SIGQUIT and SIGINT. | |
1198 | We don't know which we will get, but we handle both alike | |
1199 | so which one it really gives us does not matter. */ | |
1200 | tty.main.c_cc[VQUIT] = quit_char; | |
1201 | } | |
1202 | else | |
1203 | { | |
1204 | /* We normally don't get interrupt or quit signals from tty | |
1205 | devices other than our controlling terminal; therefore, | |
1206 | we must handle C-g as normal input. Unfortunately, this | |
1207 | means that the interrupt and quit feature must be | |
1208 | disabled on secondary ttys, or we would not even see the | |
1209 | keypress. | |
1210 | ||
1211 | Note that even though emacsclient could have special code | |
1212 | to pass SIGINT to Emacs, we should _not_ enable | |
1213 | interrupt/quit keys for emacsclient frames. This means | |
1214 | that we can't break out of loops in C code from a | |
1215 | secondary tty frame, but we can always decide what | |
1216 | display the C-g came from, which is more important from a | |
1217 | usability point of view. (Consider the case when two | |
1218 | people work together using the same Emacs instance.) */ | |
1219 | tty.main.c_cc[VINTR] = CDISABLE; | |
1220 | tty.main.c_cc[VQUIT] = CDISABLE; | |
1221 | } | |
1222 | tty.main.c_cc[VMIN] = 1; /* Input should wait for at least 1 char */ | |
1223 | tty.main.c_cc[VTIME] = 0; /* no matter how long that takes. */ | |
86a5659e | 1224 | #ifdef VSWTCH |
2246281f | 1225 | tty.main.c_cc[VSWTCH] = CDISABLE; /* Turn off shell layering use |
91bac16a | 1226 | of C-z */ |
86a5659e | 1227 | #endif /* VSWTCH */ |
2246281f | 1228 | |
b8ff87cc | 1229 | #if defined (__mips__) || defined (HAVE_TCATTR) |
86a5659e | 1230 | #ifdef VSUSP |
2246281f | 1231 | tty.main.c_cc[VSUSP] = CDISABLE; /* Turn off mips handling of C-z. */ |
86a5659e JB |
1232 | #endif /* VSUSP */ |
1233 | #ifdef V_DSUSP | |
2246281f | 1234 | tty.main.c_cc[V_DSUSP] = CDISABLE; /* Turn off mips handling of C-y. */ |
86a5659e | 1235 | #endif /* V_DSUSP */ |
e2b40c23 | 1236 | #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */ |
2246281f | 1237 | tty.main.c_cc[VDSUSP] = CDISABLE; |
e2b40c23 | 1238 | #endif /* VDSUSP */ |
92c995de | 1239 | #ifdef VLNEXT |
2246281f | 1240 | tty.main.c_cc[VLNEXT] = CDISABLE; |
92c995de RS |
1241 | #endif /* VLNEXT */ |
1242 | #ifdef VREPRINT | |
2246281f | 1243 | tty.main.c_cc[VREPRINT] = CDISABLE; |
92c995de RS |
1244 | #endif /* VREPRINT */ |
1245 | #ifdef VWERASE | |
2246281f | 1246 | tty.main.c_cc[VWERASE] = CDISABLE; |
92c995de RS |
1247 | #endif /* VWERASE */ |
1248 | #ifdef VDISCARD | |
2246281f | 1249 | tty.main.c_cc[VDISCARD] = CDISABLE; |
92c995de | 1250 | #endif /* VDISCARD */ |
c179a6d1 | 1251 | |
2246281f KL |
1252 | if (tty_out->flow_control) |
1253 | { | |
421dd92f | 1254 | #ifdef VSTART |
2246281f | 1255 | tty.main.c_cc[VSTART] = '\021'; |
421dd92f RS |
1256 | #endif /* VSTART */ |
1257 | #ifdef VSTOP | |
2246281f | 1258 | tty.main.c_cc[VSTOP] = '\023'; |
421dd92f | 1259 | #endif /* VSTOP */ |
2246281f KL |
1260 | } |
1261 | else | |
1262 | { | |
c179a6d1 | 1263 | #ifdef VSTART |
2246281f | 1264 | tty.main.c_cc[VSTART] = CDISABLE; |
c179a6d1 RS |
1265 | #endif /* VSTART */ |
1266 | #ifdef VSTOP | |
2246281f | 1267 | tty.main.c_cc[VSTOP] = CDISABLE; |
c179a6d1 | 1268 | #endif /* VSTOP */ |
2246281f | 1269 | } |
86a5659e | 1270 | #endif /* mips or HAVE_TCATTR */ |
c179a6d1 | 1271 | |
86a5659e JB |
1272 | #ifdef AIX |
1273 | #ifndef IBMR2AIX | |
2246281f KL |
1274 | /* AIX enhanced edit loses NULs, so disable it. */ |
1275 | tty.main.c_line = 0; | |
1276 | tty.main.c_iflag &= ~ASCEDIT; | |
86a5659e | 1277 | #else |
f5272227 KL |
1278 | tty.main.c_cc[VSTRT] = CDISABLE; |
1279 | tty.main.c_cc[VSTOP] = CDISABLE; | |
1280 | tty.main.c_cc[VSUSP] = CDISABLE; | |
1281 | tty.main.c_cc[VDSUSP] = CDISABLE; | |
86a5659e | 1282 | #endif /* IBMR2AIX */ |
2246281f KL |
1283 | if (tty_out->flow_control) |
1284 | { | |
ac567c95 | 1285 | #ifdef VSTART |
2246281f | 1286 | tty.main.c_cc[VSTART] = '\021'; |
ac567c95 RS |
1287 | #endif /* VSTART */ |
1288 | #ifdef VSTOP | |
2246281f | 1289 | tty.main.c_cc[VSTOP] = '\023'; |
ac567c95 | 1290 | #endif /* VSTOP */ |
2246281f KL |
1291 | } |
1292 | /* Also, PTY overloads NUL and BREAK. | |
1293 | don't ignore break, but don't signal either, so it looks like NUL. | |
1294 | This really serves a purpose only if running in an XTERM window | |
1295 | or via TELNET or the like, but does no harm elsewhere. */ | |
1296 | tty.main.c_iflag &= ~IGNBRK; | |
1297 | tty.main.c_iflag &= ~BRKINT; | |
86a5659e JB |
1298 | #endif |
1299 | #else /* if not HAVE_TERMIO */ | |
fe03522b | 1300 | #ifndef DOS_NT |
2246281f KL |
1301 | XSETINT (Vtty_erase_char, tty.main.sg_erase); |
1302 | tty.main.sg_flags &= ~(ECHO | CRMOD | XTABS); | |
1303 | if (meta_key) | |
1304 | tty.main.sg_flags |= ANYP; | |
1305 | tty.main.sg_flags |= interrupt_input ? RAW : CBREAK; | |
fe03522b | 1306 | #endif /* not DOS_NT */ |
86a5659e JB |
1307 | #endif /* not HAVE_TERMIO */ |
1308 | ||
2246281f KL |
1309 | /* If going to use CBREAK mode, we must request C-g to interrupt |
1310 | and turn off start and stop chars, etc. If not going to use | |
1311 | CBREAK mode, do this anyway so as to turn off local flow | |
1312 | control for user coming over network on 4.2; in this case, | |
1313 | only t_stopc and t_startc really matter. */ | |
91bac16a | 1314 | #ifndef HAVE_TERMIO |
50b8cf60 | 1315 | #ifdef HAVE_TCHARS |
2246281f KL |
1316 | /* Note: if not using CBREAK mode, it makes no difference how we |
1317 | set this */ | |
1318 | tty.tchars = new_tchars; | |
1319 | tty.tchars.t_intrc = quit_char; | |
1320 | if (tty_out->flow_control) | |
1321 | { | |
1322 | tty.tchars.t_startc = '\021'; | |
1323 | tty.tchars.t_stopc = '\023'; | |
1324 | } | |
1325 | ||
1326 | tty.lmode = LDECCTQ | LLITOUT | LPASS8 | LNOFLSH | tty_out->old_tty.lmode; | |
2246281f | 1327 | |
50b8cf60 | 1328 | #endif /* HAVE_TCHARS */ |
91bac16a JB |
1329 | #endif /* not HAVE_TERMIO */ |
1330 | ||
50b8cf60 | 1331 | #ifdef HAVE_LTCHARS |
2246281f | 1332 | tty.ltchars = new_ltchars; |
50b8cf60 | 1333 | #endif /* HAVE_LTCHARS */ |
207bdbdb | 1334 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */ |
2246281f KL |
1335 | if (!tty_out->term_initted) |
1336 | internal_terminal_init (); | |
1337 | dos_ttraw (); | |
207bdbdb | 1338 | #endif |
91bac16a | 1339 | |
0b0d3e0b | 1340 | EMACS_SET_TTY (fileno (tty_out->input), &tty, 0); |
86a5659e | 1341 | |
2246281f KL |
1342 | /* This code added to insure that, if flow-control is not to be used, |
1343 | we have an unlocked terminal at the start. */ | |
91bac16a | 1344 | |
86a5659e | 1345 | #ifdef TCXONC |
0b0d3e0b | 1346 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TCXONC, 1); |
86a5659e | 1347 | #endif |
86a5659e | 1348 | #ifdef TIOCSTART |
0b0d3e0b | 1349 | if (!tty_out->flow_control) ioctl (fileno (tty_out->input), TIOCSTART, 0); |
86a5659e | 1350 | #endif |
86a5659e | 1351 | |
f2a77c3a | 1352 | #if defined (HAVE_TERMIOS) || defined (HPUX) |
51417996 | 1353 | #ifdef TCOON |
0b0d3e0b | 1354 | if (!tty_out->flow_control) tcflow (fileno (tty_out->input), TCOON); |
d228f207 | 1355 | #endif |
51417996 | 1356 | #endif |
d228f207 | 1357 | |
86a5659e | 1358 | #ifdef F_SETFL |
eb8c3be9 | 1359 | #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */ |
2246281f | 1360 | if (interrupt_input) |
86a5659e | 1361 | { |
0b0d3e0b KL |
1362 | old_fcntl_owner[fileno (tty_out->input)] = |
1363 | fcntl (fileno (tty_out->input), F_GETOWN, 0); | |
1364 | fcntl (fileno (tty_out->input), F_SETOWN, getpid ()); | |
1365 | init_sigio (fileno (tty_out->input)); | |
7e5a23bd | 1366 | #ifdef HAVE_GPM |
75a8734b | 1367 | if (gpm_tty == tty_out) |
3e748bcb | 1368 | { |
75a8734b | 1369 | /* Arrange for mouse events to give us SIGIO signals. */ |
3e748bcb | 1370 | fcntl (gpm_fd, F_SETOWN, getpid ()); |
57669cf1 | 1371 | fcntl (gpm_fd, F_SETFL, fcntl (gpm_fd, F_GETFL, 0) | O_NONBLOCK); |
3e748bcb NR |
1372 | init_sigio (gpm_fd); |
1373 | } | |
7e5a23bd | 1374 | #endif /* HAVE_GPM */ |
86a5659e JB |
1375 | } |
1376 | #endif /* F_GETOWN */ | |
1377 | #endif /* F_SETFL */ | |
1378 | ||
86a5659e JB |
1379 | #ifdef _IOFBF |
1380 | /* This symbol is defined on recent USG systems. | |
1381 | Someone says without this call USG won't really buffer the file | |
1382 | even with a call to setbuf. */ | |
0b0d3e0b | 1383 | setvbuf (tty_out->output, (char *) _sobuf, _IOFBF, sizeof _sobuf); |
86a5659e | 1384 | #else |
0b0d3e0b | 1385 | setbuf (tty_out->output, (char *) _sobuf); |
86a5659e | 1386 | #endif |
4d553a13 | 1387 | |
69fb5031 JR |
1388 | if (tty_out->terminal->set_terminal_modes_hook) |
1389 | tty_out->terminal->set_terminal_modes_hook (tty_out->terminal); | |
4b311aaf | 1390 | |
9628b887 KL |
1391 | if (!tty_out->term_initted) |
1392 | { | |
1393 | Lisp_Object tail, frame; | |
1394 | FOR_EACH_FRAME (tail, frame) | |
1395 | { | |
daf01701 | 1396 | /* XXX This needs to be revised. */ |
9628b887 KL |
1397 | if (FRAME_TERMCAP_P (XFRAME (frame)) |
1398 | && FRAME_TTY (XFRAME (frame)) == tty_out) | |
1399 | init_frame_faces (XFRAME (frame)); | |
1400 | } | |
1401 | } | |
045942b2 | 1402 | |
9628b887 | 1403 | if (tty_out->term_initted && no_redraw_on_reenter) |
86a5659e | 1404 | { |
1fb8c4ad | 1405 | /* XXX This seems wrong on multi-tty. */ |
86a5659e JB |
1406 | if (display_completed) |
1407 | direct_output_forward_char (0); | |
1408 | } | |
1409 | else | |
1410 | { | |
9628b887 | 1411 | Lisp_Object tail, frame; |
0137dbf7 | 1412 | frame_garbaged = 1; |
9628b887 KL |
1413 | FOR_EACH_FRAME (tail, frame) |
1414 | { | |
1415 | if (FRAME_TERMCAP_P (XFRAME (frame)) | |
1416 | && FRAME_TTY (XFRAME (frame)) == tty_out) | |
1417 | FRAME_GARBAGED_P (XFRAME (frame)) = 1; | |
1418 | } | |
86a5659e | 1419 | } |
91bac16a | 1420 | |
9628b887 | 1421 | tty_out->term_initted = 1; |
86a5659e JB |
1422 | } |
1423 | ||
1424 | /* Return nonzero if safe to use tabs in output. | |
1425 | At the time this is called, init_sys_modes has not been done yet. */ | |
177c0ea7 | 1426 | |
dfcf069d | 1427 | int |
16c290d8 | 1428 | tabs_safe_p (int fd) |
86a5659e | 1429 | { |
6548cf00 | 1430 | struct emacs_tty etty; |
91bac16a | 1431 | |
16c290d8 | 1432 | EMACS_GET_TTY (fd, &etty); |
6548cf00 | 1433 | return EMACS_TTY_TABS_OK (&etty); |
86a5659e | 1434 | } |
73d5358f | 1435 | \f |
86a5659e | 1436 | /* Get terminal size from system. |
73d5358f RS |
1437 | Store number of lines into *HEIGHTP and width into *WIDTHP. |
1438 | We store 0 if there's no valid information. */ | |
86a5659e | 1439 | |
08633194 | 1440 | void |
16c290d8 | 1441 | get_tty_size (int fd, int *widthp, int *heightp) |
86a5659e | 1442 | { |
86a5659e | 1443 | |
86a5659e | 1444 | #ifdef TIOCGWINSZ |
91bac16a JB |
1445 | |
1446 | /* BSD-style. */ | |
86a5659e | 1447 | struct winsize size; |
91bac16a | 1448 | |
16c290d8 | 1449 | if (ioctl (fd, TIOCGWINSZ, &size) == -1) |
91bac16a JB |
1450 | *widthp = *heightp = 0; |
1451 | else | |
1452 | { | |
1453 | *widthp = size.ws_col; | |
1454 | *heightp = size.ws_row; | |
1455 | } | |
1456 | ||
1457 | #else | |
1458 | #ifdef TIOCGSIZE | |
1459 | ||
1460 | /* SunOS - style. */ | |
177c0ea7 | 1461 | struct ttysize size; |
91bac16a | 1462 | |
16c290d8 | 1463 | if (ioctl (fd, TIOCGSIZE, &size) == -1) |
91bac16a JB |
1464 | *widthp = *heightp = 0; |
1465 | else | |
1466 | { | |
1467 | *widthp = size.ts_cols; | |
1468 | *heightp = size.ts_lines; | |
1469 | } | |
1470 | ||
207bdbdb RS |
1471 | #else |
1472 | #ifdef MSDOS | |
1473 | *widthp = ScreenCols (); | |
1474 | *heightp = ScreenRows (); | |
86a5659e JB |
1475 | #else /* system doesn't know size */ |
1476 | *widthp = 0; | |
1477 | *heightp = 0; | |
207bdbdb | 1478 | #endif |
91bac16a JB |
1479 | #endif /* not SunOS-style */ |
1480 | #endif /* not BSD-style */ | |
86a5659e | 1481 | } |
91bac16a | 1482 | |
73d5358f RS |
1483 | /* Set the logical window size associated with descriptor FD |
1484 | to HEIGHT and WIDTH. This is used mainly with ptys. */ | |
1485 | ||
1486 | int | |
1487 | set_window_size (fd, height, width) | |
1488 | int fd, height, width; | |
1489 | { | |
1490 | #ifdef TIOCSWINSZ | |
1491 | ||
1492 | /* BSD-style. */ | |
1493 | struct winsize size; | |
1494 | size.ws_row = height; | |
1495 | size.ws_col = width; | |
1496 | ||
1497 | if (ioctl (fd, TIOCSWINSZ, &size) == -1) | |
1498 | return 0; /* error */ | |
1499 | else | |
1500 | return 1; | |
1501 | ||
1502 | #else | |
1503 | #ifdef TIOCSSIZE | |
1504 | ||
1505 | /* SunOS - style. */ | |
177c0ea7 | 1506 | struct ttysize size; |
73d5358f RS |
1507 | size.ts_lines = height; |
1508 | size.ts_cols = width; | |
1509 | ||
1510 | if (ioctl (fd, TIOCGSIZE, &size) == -1) | |
1511 | return 0; | |
1512 | else | |
1513 | return 1; | |
1514 | #else | |
1515 | return -1; | |
1516 | #endif /* not SunOS-style */ | |
1517 | #endif /* not BSD-style */ | |
1518 | } | |
1519 | ||
86a5659e | 1520 | \f |
da8e1115 KL |
1521 | |
1522 | /* Prepare all terminal devices for exiting Emacs. */ | |
1523 | ||
28d440ab KL |
1524 | void |
1525 | reset_all_sys_modes (void) | |
1526 | { | |
28d7d09f | 1527 | struct tty_display_info *tty; |
16c290d8 | 1528 | for (tty = tty_list; tty; tty = tty->next) |
28d440ab | 1529 | reset_sys_modes (tty); |
28d440ab KL |
1530 | } |
1531 | ||
0a125897 | 1532 | /* Prepare the terminal for closing it; move the cursor to the |
0137dbf7 | 1533 | bottom of the frame, turn off interrupt-driven I/O, etc. */ |
da8e1115 | 1534 | |
08633194 | 1535 | void |
9628b887 | 1536 | reset_sys_modes (tty_out) |
28d7d09f | 1537 | struct tty_display_info *tty_out; |
86a5659e JB |
1538 | { |
1539 | if (noninteractive) | |
1540 | { | |
1541 | fflush (stdout); | |
1542 | return; | |
1543 | } | |
9628b887 | 1544 | if (!tty_out->term_initted) |
86a5659e | 1545 | return; |
da8e1115 | 1546 | |
0b0d3e0b KL |
1547 | if (!tty_out->output) |
1548 | return; /* The tty is suspended. */ | |
1549 | ||
da8e1115 KL |
1550 | /* Go to and clear the last line of the terminal. */ |
1551 | ||
0a125897 | 1552 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
0b0d3e0b | 1553 | |
da8e1115 KL |
1554 | /* Code adapted from tty_clear_end_of_line. */ |
1555 | if (tty_out->TS_clr_line) | |
1556 | { | |
1557 | emacs_tputs (tty_out, tty_out->TS_clr_line, 1, cmputc); | |
1558 | } | |
1559 | else | |
1560 | { /* have to do it the hard way */ | |
1561 | int i; | |
ed8dad6b | 1562 | tty_turn_off_insert (tty_out); |
0b0d3e0b | 1563 | |
da8e1115 | 1564 | for (i = curX (tty_out); i < FrameCols (tty_out) - 1; i++) |
0b0d3e0b KL |
1565 | { |
1566 | fputc (' ', tty_out->output); | |
1567 | } | |
da8e1115 | 1568 | } |
0b0d3e0b | 1569 | |
0a125897 | 1570 | cmgoto (tty_out, FrameRows (tty_out) - 1, 0); |
819b8f00 KL |
1571 | fflush (tty_out->output); |
1572 | ||
69fb5031 JR |
1573 | if (tty_out->terminal->reset_terminal_modes_hook) |
1574 | tty_out->terminal->reset_terminal_modes_hook (tty_out->terminal); | |
2f98e6e3 | 1575 | |
2a633456 | 1576 | #ifdef BSD_SYSTEM |
86a5659e | 1577 | /* Avoid possible loss of output when changing terminal modes. */ |
0b0d3e0b | 1578 | fsync (fileno (tty_out->output)); |
86a5659e | 1579 | #endif |
91bac16a | 1580 | |
86a5659e | 1581 | #ifdef F_SETFL |
eb8c3be9 | 1582 | #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */ |
86a5659e JB |
1583 | if (interrupt_input) |
1584 | { | |
0b0d3e0b KL |
1585 | reset_sigio (fileno (tty_out->input)); |
1586 | fcntl (fileno (tty_out->input), F_SETOWN, | |
1587 | old_fcntl_owner[fileno (tty_out->input)]); | |
86a5659e JB |
1588 | } |
1589 | #endif /* F_SETOWN */ | |
a6b00318 | 1590 | #ifdef O_NDELAY |
0b0d3e0b KL |
1591 | fcntl (fileno (tty_out->input), F_SETFL, |
1592 | fcntl (fileno (tty_out->input), F_GETFL, 0) & ~O_NDELAY); | |
a6b00318 | 1593 | #endif |
86a5659e | 1594 | #endif /* F_SETFL */ |
91bac16a | 1595 | |
fca177d4 | 1596 | if (tty_out->old_tty) |
0b0d3e0b | 1597 | while (EMACS_SET_TTY (fileno (tty_out->input), |
fca177d4 | 1598 | tty_out->old_tty, 0) < 0 && errno == EINTR) |
7e32a4fb | 1599 | ; |
86a5659e | 1600 | |
207bdbdb RS |
1601 | #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */ |
1602 | dos_ttcooked (); | |
1603 | #endif | |
1604 | ||
0ba73609 | 1605 | #ifdef BSD_PGRPS |
0b0d3e0b | 1606 | widen_foreground_group (fileno (tty_out->input)); |
9ae8f997 | 1607 | #endif |
86a5659e JB |
1608 | } |
1609 | \f | |
1610 | #ifdef HAVE_PTYS | |
1611 | ||
1612 | /* Set up the proper status flags for use of a pty. */ | |
1613 | ||
08633194 | 1614 | void |
86a5659e JB |
1615 | setup_pty (fd) |
1616 | int fd; | |
1617 | { | |
1618 | /* I'm told that TOICREMOTE does not mean control chars | |
1619 | "can't be sent" but rather that they don't have | |
1620 | input-editing or signaling effects. | |
1621 | That should be good, because we have other ways | |
1622 | to do those things in Emacs. | |
1623 | However, telnet mode seems not to work on 4.2. | |
1624 | So TIOCREMOTE is turned off now. */ | |
1625 | ||
1626 | /* Under hp-ux, if TIOCREMOTE is turned on, some calls | |
1627 | will hang. In particular, the "timeout" feature (which | |
1628 | causes a read to return if there is no data available) | |
1629 | does this. Also it is known that telnet mode will hang | |
1630 | in such a way that Emacs must be stopped (perhaps this | |
1631 | is the same problem). | |
177c0ea7 | 1632 | |
86a5659e JB |
1633 | If TIOCREMOTE is turned off, then there is a bug in |
1634 | hp-ux which sometimes loses data. Apparently the | |
1635 | code which blocks the master process when the internal | |
1636 | buffer fills up does not work. Other than this, | |
1637 | though, everything else seems to work fine. | |
177c0ea7 | 1638 | |
86a5659e JB |
1639 | Since the latter lossage is more benign, we may as well |
1640 | lose that way. -- cph */ | |
1641 | #ifdef FIONBIO | |
bdee2ef3 | 1642 | #if defined(UNIX98_PTYS) |
86a5659e JB |
1643 | { |
1644 | int on = 1; | |
1645 | ioctl (fd, FIONBIO, &on); | |
1646 | } | |
1647 | #endif | |
1648 | #endif | |
86a5659e JB |
1649 | } |
1650 | #endif /* HAVE_PTYS */ | |
1651 | \f | |
7c2fb837 | 1652 | #if !defined(CANNOT_DUMP) || !defined(SYSTEM_MALLOC) |
86a5659e JB |
1653 | /* Some systems that cannot dump also cannot implement these. */ |
1654 | ||
1655 | /* | |
1656 | * Return the address of the start of the text segment prior to | |
1657 | * doing an unexec. After unexec the return value is undefined. | |
1658 | * See crt0.c for further explanation and _start. | |
1659 | * | |
1660 | */ | |
1661 | ||
c0c9ac48 | 1662 | #if !(defined (__NetBSD__) && defined (__ELF__)) |
260fe597 | 1663 | #ifndef HAVE_TEXT_START |
86a5659e JB |
1664 | char * |
1665 | start_of_text () | |
1666 | { | |
1667 | #ifdef TEXT_START | |
1668 | return ((char *) TEXT_START); | |
1669 | #else | |
86a5659e JB |
1670 | extern int _start (); |
1671 | return ((char *) _start); | |
86a5659e JB |
1672 | #endif /* TEXT_START */ |
1673 | } | |
260fe597 | 1674 | #endif /* not HAVE_TEXT_START */ |
c0c9ac48 | 1675 | #endif |
86a5659e JB |
1676 | |
1677 | /* | |
1678 | * Return the address of the start of the data segment prior to | |
1679 | * doing an unexec. After unexec the return value is undefined. | |
1680 | * See crt0.c for further information and definition of data_start. | |
1681 | * | |
1682 | * Apparently, on BSD systems this is etext at startup. On | |
1683 | * USG systems (swapping) this is highly mmu dependent and | |
1684 | * is also dependent on whether or not the program is running | |
1685 | * with shared text. Generally there is a (possibly large) | |
1686 | * gap between end of text and start of data with shared text. | |
1687 | * | |
1688 | * On Uniplus+ systems with shared text, data starts at a | |
1689 | * fixed address. Each port (from a given oem) is generally | |
1690 | * different, and the specific value of the start of data can | |
1691 | * be obtained via the UniPlus+ specific "uvar" system call, | |
1692 | * however the method outlined in crt0.c seems to be more portable. | |
1693 | * | |
1694 | * Probably what will have to happen when a USG unexec is available, | |
1695 | * at least on UniPlus, is temacs will have to be made unshared so | |
1696 | * that text and data are contiguous. Then once loadup is complete, | |
1697 | * unexec will produce a shared executable where the data can be | |
ea5a0917 | 1698 | * at the normal shared text boundary and the startofdata variable |
86a5659e JB |
1699 | * will be patched by unexec to the correct value. |
1700 | * | |
1701 | */ | |
177c0ea7 | 1702 | |
be3abfa2 | 1703 | #ifndef start_of_data |
86a5659e JB |
1704 | char * |
1705 | start_of_data () | |
1706 | { | |
1707 | #ifdef DATA_START | |
1708 | return ((char *) DATA_START); | |
6c65530f JB |
1709 | #else |
1710 | #ifdef ORDINARY_LINK | |
1711 | /* | |
1712 | * This is a hack. Since we're not linking crt0.c or pre_crt0.c, | |
1713 | * data_start isn't defined. We take the address of environ, which | |
1714 | * is known to live at or near the start of the system crt0.c, and | |
1715 | * we don't sweat the handful of bytes that might lose. | |
1716 | */ | |
1717 | extern char **environ; | |
1718 | ||
c4ea52a6 | 1719 | return ((char *) &environ); |
86a5659e JB |
1720 | #else |
1721 | extern int data_start; | |
1722 | return ((char *) &data_start); | |
6c65530f JB |
1723 | #endif /* ORDINARY_LINK */ |
1724 | #endif /* DATA_START */ | |
86a5659e | 1725 | } |
be3abfa2 | 1726 | #endif /* start_of_data */ |
86a5659e | 1727 | #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */ |
86a5659e | 1728 | \f |
c0c86835 KH |
1729 | /* init_system_name sets up the string for the Lisp function |
1730 | system-name to return. */ | |
86a5659e | 1731 | |
c0c86835 | 1732 | extern Lisp_Object Vsystem_name; |
86a5659e | 1733 | |
f8a80313 RS |
1734 | #ifdef HAVE_SOCKETS |
1735 | #include <sys/socket.h> | |
1736 | #include <netdb.h> | |
1737 | #endif /* HAVE_SOCKETS */ | |
f8a80313 | 1738 | |
8581cd64 KH |
1739 | #ifdef TRY_AGAIN |
1740 | #ifndef HAVE_H_ERRNO | |
1741 | extern int h_errno; | |
1742 | #endif | |
1743 | #endif /* TRY_AGAIN */ | |
1744 | ||
c0c86835 KH |
1745 | void |
1746 | init_system_name () | |
86a5659e | 1747 | { |
210b2b4f | 1748 | #ifndef HAVE_GETHOSTNAME |
c0c86835 KH |
1749 | struct utsname uts; |
1750 | uname (&uts); | |
1751 | Vsystem_name = build_string (uts.nodename); | |
67004ffb | 1752 | #else /* HAVE_GETHOSTNAME */ |
cc6e7269 | 1753 | unsigned int hostname_size = 256; |
c0c86835 KH |
1754 | char *hostname = (char *) alloca (hostname_size); |
1755 | ||
1756 | /* Try to get the host name; if the buffer is too short, try | |
1757 | again. Apparently, the only indication gethostname gives of | |
1758 | whether the buffer was large enough is the presence or absence | |
1759 | of a '\0' in the string. Eech. */ | |
1760 | for (;;) | |
1761 | { | |
1762 | gethostname (hostname, hostname_size - 1); | |
1763 | hostname[hostname_size - 1] = '\0'; | |
1764 | ||
1765 | /* Was the buffer large enough for the '\0'? */ | |
1766 | if (strlen (hostname) < hostname_size - 1) | |
1767 | break; | |
1768 | ||
1769 | hostname_size <<= 1; | |
1770 | hostname = (char *) alloca (hostname_size); | |
1771 | } | |
67004ffb | 1772 | #ifdef HAVE_SOCKETS |
c0c86835 KH |
1773 | /* Turn the hostname into the official, fully-qualified hostname. |
1774 | Don't do this if we're going to dump; this can confuse system | |
1775 | libraries on some machines and make the dumped emacs core dump. */ | |
67004ffb | 1776 | #ifndef CANNOT_DUMP |
c0c86835 | 1777 | if (initialized) |
67004ffb | 1778 | #endif /* not CANNOT_DUMP */ |
960d894c KH |
1779 | if (! index (hostname, '.')) |
1780 | { | |
960d894c | 1781 | int count; |
3d66b985 JD |
1782 | #ifdef HAVE_GETADDRINFO |
1783 | struct addrinfo *res; | |
1784 | struct addrinfo hints; | |
1785 | int ret; | |
1786 | ||
1787 | memset (&hints, 0, sizeof(hints)); | |
1788 | hints.ai_socktype = SOCK_STREAM; | |
1789 | hints.ai_flags = AI_CANONNAME; | |
1790 | ||
960d894c KH |
1791 | for (count = 0;; count++) |
1792 | { | |
3d66b985 JD |
1793 | if ((ret = getaddrinfo (hostname, NULL, &hints, &res)) == 0 |
1794 | || ret != EAI_AGAIN) | |
1795 | break; | |
1796 | ||
1797 | if (count >= 5) | |
1798 | break; | |
1799 | Fsleep_for (make_number (1), Qnil); | |
1800 | } | |
1801 | ||
1802 | if (ret == 0) | |
1803 | { | |
1804 | struct addrinfo *it = res; | |
1805 | while (it) | |
1806 | { | |
1807 | char *fqdn = it->ai_canonname; | |
1808 | if (fqdn && index (fqdn, '.') | |
1809 | && strcmp (fqdn, "localhost.localdomain") != 0) | |
1810 | break; | |
1811 | it = it->ai_next; | |
1812 | } | |
1813 | if (it) | |
1814 | { | |
1815 | hostname = alloca (strlen (it->ai_canonname) + 1); | |
1816 | strcpy (hostname, it->ai_canonname); | |
1817 | } | |
1818 | freeaddrinfo (res); | |
1819 | } | |
1820 | #else /* !HAVE_GETADDRINFO */ | |
1821 | struct hostent *hp; | |
1822 | for (count = 0;; count++) | |
1823 | { | |
1824 | ||
e24f1d55 | 1825 | #ifdef TRY_AGAIN |
960d894c | 1826 | h_errno = 0; |
e24f1d55 | 1827 | #endif |
960d894c | 1828 | hp = gethostbyname (hostname); |
efa04277 | 1829 | #ifdef TRY_AGAIN |
960d894c KH |
1830 | if (! (hp == 0 && h_errno == TRY_AGAIN)) |
1831 | #endif | |
3d66b985 | 1832 | |
960d894c | 1833 | break; |
3d66b985 | 1834 | |
960d894c KH |
1835 | if (count >= 5) |
1836 | break; | |
1837 | Fsleep_for (make_number (1), Qnil); | |
1838 | } | |
3d66b985 | 1839 | |
960d894c KH |
1840 | if (hp) |
1841 | { | |
1842 | char *fqdn = (char *) hp->h_name; | |
960d894c KH |
1843 | |
1844 | if (!index (fqdn, '.')) | |
1845 | { | |
1846 | /* We still don't have a fully qualified domain name. | |
1847 | Try to find one in the list of alternate names */ | |
1848 | char **alias = hp->h_aliases; | |
923721f4 CY |
1849 | while (*alias |
1850 | && (!index (*alias, '.') | |
1851 | || !strcmp (*alias, "localhost.localdomain"))) | |
960d894c KH |
1852 | alias++; |
1853 | if (*alias) | |
1854 | fqdn = *alias; | |
1855 | } | |
1856 | hostname = fqdn; | |
960d894c | 1857 | } |
3d66b985 | 1858 | #endif /* !HAVE_GETADDRINFO */ |
960d894c | 1859 | } |
67004ffb | 1860 | #endif /* HAVE_SOCKETS */ |
c0c86835 | 1861 | Vsystem_name = build_string (hostname); |
67004ffb | 1862 | #endif /* HAVE_GETHOSTNAME */ |
c0c86835 KH |
1863 | { |
1864 | unsigned char *p; | |
d5db4077 | 1865 | for (p = SDATA (Vsystem_name); *p; p++) |
c0c86835 KH |
1866 | if (*p == ' ' || *p == '\t') |
1867 | *p = '-'; | |
1868 | } | |
67004ffb | 1869 | } |
86a5659e | 1870 | \f |
7964ba9e | 1871 | #ifndef MSDOS |
4624371d | 1872 | #if !defined (HAVE_SELECT) |
86a5659e | 1873 | |
86d1f23a KH |
1874 | #include "sysselect.h" |
1875 | #undef select | |
1876 | ||
1877 | #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT) | |
86a5659e JB |
1878 | /* Cause explanatory error message at compile time, |
1879 | since the select emulation is not good enough for X. */ | |
1880 | int *x = &x_windows_lose_if_no_select_system_call; | |
1881 | #endif | |
1882 | ||
1883 | /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs | |
1884 | * Only checks read descriptors. | |
1885 | */ | |
1886 | /* How long to wait between checking fds in select */ | |
1887 | #define SELECT_PAUSE 1 | |
1888 | int select_alarmed; | |
1889 | ||
1890 | /* For longjmp'ing back to read_input_waiting. */ | |
1891 | ||
1892 | jmp_buf read_alarm_throw; | |
1893 | ||
1894 | /* Nonzero if the alarm signal should throw back to read_input_waiting. | |
1895 | The read_socket_hook function sets this to 1 while it is waiting. */ | |
1896 | ||
1897 | int read_alarm_should_throw; | |
1898 | ||
1899 | SIGTYPE | |
1900 | select_alarm () | |
1901 | { | |
1902 | select_alarmed = 1; | |
86a5659e | 1903 | signal (SIGALRM, SIG_IGN); |
333f1b6f | 1904 | SIGNAL_THREAD_CHECK (SIGALRM); |
86a5659e JB |
1905 | if (read_alarm_should_throw) |
1906 | longjmp (read_alarm_throw, 1); | |
1907 | } | |
1908 | ||
9d9f1812 | 1909 | #ifndef WINDOWSNT |
86a5659e JB |
1910 | /* Only rfds are checked. */ |
1911 | int | |
86d1f23a | 1912 | sys_select (nfds, rfds, wfds, efds, timeout) |
86a5659e | 1913 | int nfds; |
86d1f23a KH |
1914 | SELECT_TYPE *rfds, *wfds, *efds; |
1915 | EMACS_TIME *timeout; | |
86a5659e | 1916 | { |
2246281f KL |
1917 | /* XXX This needs to be updated for multi-tty support. Is there |
1918 | anybody who needs to emulate select these days? */ | |
1919 | int ravail = 0; | |
86d1f23a KH |
1920 | SELECT_TYPE orfds; |
1921 | int timeoutval; | |
1922 | int *local_timeout; | |
86a5659e JB |
1923 | extern int proc_buffered_char[]; |
1924 | #ifndef subprocesses | |
1925 | int process_tick = 0, update_tick = 0; | |
1926 | #else | |
1927 | extern int process_tick, update_tick; | |
1928 | #endif | |
86a5659e JB |
1929 | unsigned char buf; |
1930 | ||
86d1f23a KH |
1931 | #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS) |
1932 | /* If we're using X, then the native select will work; we only need the | |
1933 | emulation for non-X usage. */ | |
2246281f | 1934 | if (!NILP (Vinitial_window_system)) |
86d1f23a KH |
1935 | return select (nfds, rfds, wfds, efds, timeout); |
1936 | #endif | |
1937 | timeoutval = timeout ? EMACS_SECS (*timeout) : 100000; | |
1938 | local_timeout = &timeoutval; | |
1939 | FD_ZERO (&orfds); | |
86a5659e JB |
1940 | if (rfds) |
1941 | { | |
1942 | orfds = *rfds; | |
86d1f23a | 1943 | FD_ZERO (rfds); |
86a5659e JB |
1944 | } |
1945 | if (wfds) | |
86d1f23a | 1946 | FD_ZERO (wfds); |
86a5659e | 1947 | if (efds) |
86d1f23a | 1948 | FD_ZERO (efds); |
86a5659e JB |
1949 | |
1950 | /* If we are looking only for the terminal, with no timeout, | |
1951 | just read it and wait -- that's more efficient. */ | |
86d1f23a KH |
1952 | if (*local_timeout == 100000 && process_tick == update_tick |
1953 | && FD_ISSET (0, &orfds)) | |
86a5659e | 1954 | { |
86d1f23a KH |
1955 | int fd; |
1956 | for (fd = 1; fd < nfds; ++fd) | |
1957 | if (FD_ISSET (fd, &orfds)) | |
1958 | goto hardway; | |
86a5659e JB |
1959 | if (! detect_input_pending ()) |
1960 | read_input_waiting (); | |
86d1f23a | 1961 | FD_SET (0, rfds); |
86a5659e JB |
1962 | return 1; |
1963 | } | |
1964 | ||
86d1f23a | 1965 | hardway: |
86a5659e JB |
1966 | /* Once a second, till the timer expires, check all the flagged read |
1967 | * descriptors to see if any input is available. If there is some then | |
1968 | * set the corresponding bit in the return copy of rfds. | |
177c0ea7 | 1969 | */ |
86a5659e JB |
1970 | while (1) |
1971 | { | |
86d1f23a | 1972 | register int to_check, fd; |
86a5659e JB |
1973 | |
1974 | if (rfds) | |
1975 | { | |
86d1f23a | 1976 | for (to_check = nfds, fd = 0; --to_check >= 0; fd++) |
86a5659e | 1977 | { |
86d1f23a | 1978 | if (FD_ISSET (fd, &orfds)) |
86a5659e JB |
1979 | { |
1980 | int avail = 0, status = 0; | |
1981 | ||
86d1f23a | 1982 | if (fd == 0) |
86a5659e JB |
1983 | avail = detect_input_pending (); /* Special keyboard handler */ |
1984 | else | |
1985 | { | |
1986 | #ifdef FIONREAD | |
1987 | status = ioctl (fd, FIONREAD, &avail); | |
1988 | #else /* no FIONREAD */ | |
1989 | /* Hoping it will return -1 if nothing available | |
1990 | or 0 if all 0 chars requested are read. */ | |
1991 | if (proc_buffered_char[fd] >= 0) | |
1992 | avail = 1; | |
1993 | else | |
1994 | { | |
1995 | avail = read (fd, &buf, 1); | |
1996 | if (avail > 0) | |
1997 | proc_buffered_char[fd] = buf; | |
1998 | } | |
1999 | #endif /* no FIONREAD */ | |
2000 | } | |
2001 | if (status >= 0 && avail > 0) | |
2002 | { | |
86d1f23a | 2003 | FD_SET (fd, rfds); |
86a5659e JB |
2004 | ravail++; |
2005 | } | |
2006 | } | |
2007 | } | |
2008 | } | |
2009 | if (*local_timeout == 0 || ravail != 0 || process_tick != update_tick) | |
2010 | break; | |
ffdcc91d GM |
2011 | |
2012 | turn_on_atimers (0); | |
2013 | signal (SIGALRM, select_alarm); | |
86a5659e JB |
2014 | select_alarmed = 0; |
2015 | alarm (SELECT_PAUSE); | |
177c0ea7 | 2016 | |
86a5659e JB |
2017 | /* Wait for a SIGALRM (or maybe a SIGTINT) */ |
2018 | while (select_alarmed == 0 && *local_timeout != 0 | |
2019 | && process_tick == update_tick) | |
2020 | { | |
2021 | /* If we are interested in terminal input, | |
2022 | wait by reading the terminal. | |
2023 | That makes instant wakeup for terminal input at least. */ | |
86d1f23a | 2024 | if (FD_ISSET (0, &orfds)) |
86a5659e JB |
2025 | { |
2026 | read_input_waiting (); | |
2027 | if (detect_input_pending ()) | |
2028 | select_alarmed = 1; | |
2029 | } | |
2030 | else | |
2031 | pause (); | |
2032 | } | |
2033 | (*local_timeout) -= SELECT_PAUSE; | |
177c0ea7 | 2034 | |
ffdcc91d GM |
2035 | /* Reset the old alarm if there was one. */ |
2036 | turn_on_atimers (1); | |
177c0ea7 | 2037 | |
86a5659e JB |
2038 | if (*local_timeout == 0) /* Stop on timer being cleared */ |
2039 | break; | |
2040 | } | |
2041 | return ravail; | |
2042 | } | |
30790a37 | 2043 | #endif /* not WINDOWSNT */ |
86a5659e JB |
2044 | |
2045 | /* Read keyboard input into the standard buffer, | |
2046 | waiting for at least one character. */ | |
2047 | ||
dfcf069d | 2048 | void |
86a5659e JB |
2049 | read_input_waiting () |
2050 | { | |
2246281f KL |
2051 | /* XXX This needs to be updated for multi-tty support. Is there |
2052 | anybody who needs to emulate select these days? */ | |
34567704 JB |
2053 | int nread, i; |
2054 | extern int quit_char; | |
86a5659e JB |
2055 | |
2056 | if (read_socket_hook) | |
2057 | { | |
9f893fc6 KS |
2058 | struct input_event hold_quit; |
2059 | ||
2060 | EVENT_INIT (hold_quit); | |
2061 | hold_quit.kind = NO_EVENT; | |
2062 | ||
86a5659e JB |
2063 | read_alarm_should_throw = 0; |
2064 | if (! setjmp (read_alarm_throw)) | |
9f893fc6 | 2065 | nread = (*read_socket_hook) (0, 1, &hold_quit); |
86a5659e JB |
2066 | else |
2067 | nread = -1; | |
f4a7e5bd | 2068 | |
9f893fc6 KS |
2069 | if (hold_quit.kind != NO_EVENT) |
2070 | kbd_buffer_store_event (&hold_quit); | |
86a5659e JB |
2071 | } |
2072 | else | |
86a5659e | 2073 | { |
50acda85 | 2074 | struct input_event e; |
f4a7e5bd RS |
2075 | char buf[3]; |
2076 | nread = read (fileno (stdin), buf, 1); | |
50acda85 | 2077 | EVENT_INIT (e); |
f4a7e5bd RS |
2078 | |
2079 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
e43bd4f5 | 2080 | e.kind = ASCII_KEYSTROKE_EVENT; |
2d064114 | 2081 | e.frame_or_window = selected_frame; |
f4a7e5bd RS |
2082 | e.modifiers = 0; |
2083 | for (i = 0; i < nread; i++) | |
a00d5589 | 2084 | { |
f4a7e5bd RS |
2085 | /* Convert chars > 0177 to meta events if desired. |
2086 | We do this under the same conditions that read_avail_input does. */ | |
2087 | if (read_socket_hook == 0) | |
2088 | { | |
2089 | /* If the user says she has a meta key, then believe her. */ | |
2090 | if (meta_key == 1 && (buf[i] & 0x80)) | |
2091 | e.modifiers = meta_modifier; | |
2092 | if (meta_key != 2) | |
2093 | buf[i] &= ~0x80; | |
2094 | } | |
b95520f5 | 2095 | |
c81d47b4 | 2096 | XSETINT (e.code, buf[i]); |
f4a7e5bd RS |
2097 | kbd_buffer_store_event (&e); |
2098 | /* Don't look at input that follows a C-g too closely. | |
2099 | This reduces lossage due to autorepeat on C-g. */ | |
2100 | if (buf[i] == quit_char) | |
2101 | break; | |
2102 | } | |
86a5659e JB |
2103 | } |
2104 | } | |
2105 | ||
4624371d | 2106 | #if !defined (HAVE_SELECT) |
819b8f00 KL |
2107 | #define select sys_select |
2108 | #endif | |
2109 | ||
86a5659e | 2110 | #endif /* not HAVE_SELECT */ |
7964ba9e | 2111 | #endif /* not MSDOS */ |
86a5659e | 2112 | \f |
86a5659e JB |
2113 | /* POSIX signals support - DJB */ |
2114 | /* Anyone with POSIX signals should have ANSI C declarations */ | |
2115 | ||
2116 | #ifdef POSIX_SIGNALS | |
2117 | ||
c639b0e3 | 2118 | sigset_t empty_mask, full_mask; |
86a5659e | 2119 | |
86a5659e JB |
2120 | signal_handler_t |
2121 | sys_signal (int signal_number, signal_handler_t action) | |
2122 | { | |
c639b0e3 | 2123 | struct sigaction new_action, old_action; |
86a5659e | 2124 | sigemptyset (&new_action.sa_mask); |
e5c99298 | 2125 | new_action.sa_handler = action; |
275464e7 | 2126 | #if defined (SA_RESTART) && ! defined (BROKEN_SA_RESTART) && !defined(SYNC_INPUT) |
25ab68af | 2127 | /* Emacs mostly works better with restartable system services. If this |
55fafcf0 RS |
2128 | flag exists, we probably want to turn it on here. |
2129 | However, on some systems this resets the timeout of `select' | |
2130 | which means that `select' never finishes if it keeps getting signals. | |
2131 | BROKEN_SA_RESTART is defined on those systems. */ | |
275464e7 SM |
2132 | /* It's not clear why the comment above says "mostly works better". --Stef |
2133 | When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll | |
2134 | for pending input so we need long-running syscalls to be interrupted | |
2135 | after a signal that sets the interrupt_input_pending flag. */ | |
25ab68af RS |
2136 | new_action.sa_flags = SA_RESTART; |
2137 | #else | |
4a785b6e | 2138 | new_action.sa_flags = 0; |
25ab68af | 2139 | #endif |
d32b2f3c | 2140 | sigaction (signal_number, &new_action, &old_action); |
e5c99298 | 2141 | return (old_action.sa_handler); |
86a5659e JB |
2142 | } |
2143 | ||
e065a56e JB |
2144 | #ifndef __GNUC__ |
2145 | /* If we're compiling with GCC, we don't need this function, since it | |
2146 | can be written as a macro. */ | |
2147 | sigset_t | |
2148 | sys_sigmask (int sig) | |
2149 | { | |
2150 | sigset_t mask; | |
2151 | sigemptyset (&mask); | |
2152 | sigaddset (&mask, sig); | |
2153 | return mask; | |
2154 | } | |
2155 | #endif | |
2156 | ||
86a5659e JB |
2157 | /* I'd like to have these guys return pointers to the mask storage in here, |
2158 | but there'd be trouble if the code was saving multiple masks. I'll be | |
2159 | safe and pass the structure. It normally won't be more than 2 bytes | |
2160 | anyhow. - DJB */ | |
2161 | ||
2162 | sigset_t | |
2163 | sys_sigblock (sigset_t new_mask) | |
2164 | { | |
2165 | sigset_t old_mask; | |
2166 | sigprocmask (SIG_BLOCK, &new_mask, &old_mask); | |
2167 | return (old_mask); | |
2168 | } | |
2169 | ||
2170 | sigset_t | |
2171 | sys_sigunblock (sigset_t new_mask) | |
2172 | { | |
2173 | sigset_t old_mask; | |
2174 | sigprocmask (SIG_UNBLOCK, &new_mask, &old_mask); | |
2175 | return (old_mask); | |
2176 | } | |
2177 | ||
2178 | sigset_t | |
2179 | sys_sigsetmask (sigset_t new_mask) | |
2180 | { | |
2181 | sigset_t old_mask; | |
2182 | sigprocmask (SIG_SETMASK, &new_mask, &old_mask); | |
2183 | return (old_mask); | |
2184 | } | |
2185 | ||
2186 | #endif /* POSIX_SIGNALS */ | |
2187 | \f | |
b80263be | 2188 | #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST |
ca9c0567 PE |
2189 | static char *my_sys_siglist[NSIG]; |
2190 | # ifdef sys_siglist | |
2191 | # undef sys_siglist | |
2192 | # endif | |
2193 | # define sys_siglist my_sys_siglist | |
2194 | #endif | |
2195 | ||
2196 | void | |
2197 | init_signals () | |
2198 | { | |
2199 | #ifdef POSIX_SIGNALS | |
2200 | sigemptyset (&empty_mask); | |
2201 | sigfillset (&full_mask); | |
2202 | #endif | |
2203 | ||
b80263be | 2204 | #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST |
ca9c0567 PE |
2205 | if (! initialized) |
2206 | { | |
2207 | # ifdef SIGABRT | |
2208 | sys_siglist[SIGABRT] = "Aborted"; | |
2209 | # endif | |
2210 | # ifdef SIGAIO | |
2211 | sys_siglist[SIGAIO] = "LAN I/O interrupt"; | |
2212 | # endif | |
2213 | # ifdef SIGALRM | |
2214 | sys_siglist[SIGALRM] = "Alarm clock"; | |
2215 | # endif | |
2216 | # ifdef SIGBUS | |
2217 | sys_siglist[SIGBUS] = "Bus error"; | |
2218 | # endif | |
2219 | # ifdef SIGCLD | |
2220 | sys_siglist[SIGCLD] = "Child status changed"; | |
2221 | # endif | |
2222 | # ifdef SIGCHLD | |
2223 | sys_siglist[SIGCHLD] = "Child status changed"; | |
2224 | # endif | |
2225 | # ifdef SIGCONT | |
2226 | sys_siglist[SIGCONT] = "Continued"; | |
2227 | # endif | |
2228 | # ifdef SIGDANGER | |
2229 | sys_siglist[SIGDANGER] = "Swap space dangerously low"; | |
2230 | # endif | |
2231 | # ifdef SIGDGNOTIFY | |
2232 | sys_siglist[SIGDGNOTIFY] = "Notification message in queue"; | |
2233 | # endif | |
2234 | # ifdef SIGEMT | |
2235 | sys_siglist[SIGEMT] = "Emulation trap"; | |
2236 | # endif | |
2237 | # ifdef SIGFPE | |
2238 | sys_siglist[SIGFPE] = "Arithmetic exception"; | |
2239 | # endif | |
2240 | # ifdef SIGFREEZE | |
2241 | sys_siglist[SIGFREEZE] = "SIGFREEZE"; | |
2242 | # endif | |
2243 | # ifdef SIGGRANT | |
2244 | sys_siglist[SIGGRANT] = "Monitor mode granted"; | |
2245 | # endif | |
2246 | # ifdef SIGHUP | |
2247 | sys_siglist[SIGHUP] = "Hangup"; | |
2248 | # endif | |
2249 | # ifdef SIGILL | |
2250 | sys_siglist[SIGILL] = "Illegal instruction"; | |
2251 | # endif | |
2252 | # ifdef SIGINT | |
2253 | sys_siglist[SIGINT] = "Interrupt"; | |
2254 | # endif | |
2255 | # ifdef SIGIO | |
2256 | sys_siglist[SIGIO] = "I/O possible"; | |
2257 | # endif | |
2258 | # ifdef SIGIOINT | |
2259 | sys_siglist[SIGIOINT] = "I/O intervention required"; | |
2260 | # endif | |
2261 | # ifdef SIGIOT | |
2262 | sys_siglist[SIGIOT] = "IOT trap"; | |
2263 | # endif | |
2264 | # ifdef SIGKILL | |
2265 | sys_siglist[SIGKILL] = "Killed"; | |
2266 | # endif | |
2267 | # ifdef SIGLOST | |
2268 | sys_siglist[SIGLOST] = "Resource lost"; | |
2269 | # endif | |
2270 | # ifdef SIGLWP | |
2271 | sys_siglist[SIGLWP] = "SIGLWP"; | |
2272 | # endif | |
2273 | # ifdef SIGMSG | |
2274 | sys_siglist[SIGMSG] = "Monitor mode data available"; | |
2275 | # endif | |
2276 | # ifdef SIGPHONE | |
2277 | sys_siglist[SIGWIND] = "SIGPHONE"; | |
2278 | # endif | |
2279 | # ifdef SIGPIPE | |
2280 | sys_siglist[SIGPIPE] = "Broken pipe"; | |
2281 | # endif | |
2282 | # ifdef SIGPOLL | |
2283 | sys_siglist[SIGPOLL] = "Pollable event occurred"; | |
2284 | # endif | |
2285 | # ifdef SIGPROF | |
2286 | sys_siglist[SIGPROF] = "Profiling timer expired"; | |
2287 | # endif | |
2288 | # ifdef SIGPTY | |
2289 | sys_siglist[SIGPTY] = "PTY I/O interrupt"; | |
2290 | # endif | |
2291 | # ifdef SIGPWR | |
2292 | sys_siglist[SIGPWR] = "Power-fail restart"; | |
2293 | # endif | |
2294 | # ifdef SIGQUIT | |
2295 | sys_siglist[SIGQUIT] = "Quit"; | |
2296 | # endif | |
2297 | # ifdef SIGRETRACT | |
2298 | sys_siglist[SIGRETRACT] = "Need to relinguish monitor mode"; | |
2299 | # endif | |
2300 | # ifdef SIGSAK | |
2301 | sys_siglist[SIGSAK] = "Secure attention"; | |
2302 | # endif | |
2303 | # ifdef SIGSEGV | |
2304 | sys_siglist[SIGSEGV] = "Segmentation violation"; | |
2305 | # endif | |
2306 | # ifdef SIGSOUND | |
2307 | sys_siglist[SIGSOUND] = "Sound completed"; | |
2308 | # endif | |
2309 | # ifdef SIGSTOP | |
2310 | sys_siglist[SIGSTOP] = "Stopped (signal)"; | |
2311 | # endif | |
2312 | # ifdef SIGSTP | |
2313 | sys_siglist[SIGSTP] = "Stopped (user)"; | |
2314 | # endif | |
2315 | # ifdef SIGSYS | |
2316 | sys_siglist[SIGSYS] = "Bad argument to system call"; | |
2317 | # endif | |
2318 | # ifdef SIGTERM | |
2319 | sys_siglist[SIGTERM] = "Terminated"; | |
2320 | # endif | |
2321 | # ifdef SIGTHAW | |
2322 | sys_siglist[SIGTHAW] = "SIGTHAW"; | |
2323 | # endif | |
2324 | # ifdef SIGTRAP | |
2325 | sys_siglist[SIGTRAP] = "Trace/breakpoint trap"; | |
2326 | # endif | |
2327 | # ifdef SIGTSTP | |
2328 | sys_siglist[SIGTSTP] = "Stopped (user)"; | |
2329 | # endif | |
2330 | # ifdef SIGTTIN | |
2331 | sys_siglist[SIGTTIN] = "Stopped (tty input)"; | |
2332 | # endif | |
2333 | # ifdef SIGTTOU | |
2334 | sys_siglist[SIGTTOU] = "Stopped (tty output)"; | |
2335 | # endif | |
2336 | # ifdef SIGURG | |
2337 | sys_siglist[SIGURG] = "Urgent I/O condition"; | |
2338 | # endif | |
2339 | # ifdef SIGUSR1 | |
2340 | sys_siglist[SIGUSR1] = "User defined signal 1"; | |
2341 | # endif | |
2342 | # ifdef SIGUSR2 | |
2343 | sys_siglist[SIGUSR2] = "User defined signal 2"; | |
2344 | # endif | |
2345 | # ifdef SIGVTALRM | |
2346 | sys_siglist[SIGVTALRM] = "Virtual timer expired"; | |
2347 | # endif | |
2348 | # ifdef SIGWAITING | |
2349 | sys_siglist[SIGWAITING] = "Process's LWPs are blocked"; | |
2350 | # endif | |
2351 | # ifdef SIGWINCH | |
2352 | sys_siglist[SIGWINCH] = "Window size changed"; | |
2353 | # endif | |
2354 | # ifdef SIGWIND | |
2355 | sys_siglist[SIGWIND] = "SIGWIND"; | |
2356 | # endif | |
2357 | # ifdef SIGXCPU | |
2358 | sys_siglist[SIGXCPU] = "CPU time limit exceeded"; | |
2359 | # endif | |
2360 | # ifdef SIGXFSZ | |
2361 | sys_siglist[SIGXFSZ] = "File size limit exceeded"; | |
2362 | # endif | |
2363 | } | |
b80263be | 2364 | #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */ |
ca9c0567 PE |
2365 | } |
2366 | \f | |
9927a7b1 | 2367 | #ifndef HAVE_RANDOM |
4bb8c8b7 KH |
2368 | #ifdef random |
2369 | #define HAVE_RANDOM | |
2370 | #endif | |
2371 | #endif | |
2372 | ||
2373 | /* Figure out how many bits the system's random number generator uses. | |
2374 | `random' and `lrand48' are assumed to return 31 usable bits. | |
2375 | BSD `rand' returns a 31 bit value but the low order bits are unusable; | |
2376 | so we'll shift it and treat it like the 15-bit USG `rand'. */ | |
2377 | ||
2378 | #ifndef RAND_BITS | |
2379 | # ifdef HAVE_RANDOM | |
2380 | # define RAND_BITS 31 | |
2381 | # else /* !HAVE_RANDOM */ | |
2382 | # ifdef HAVE_LRAND48 | |
2383 | # define RAND_BITS 31 | |
2384 | # define random lrand48 | |
2385 | # else /* !HAVE_LRAND48 */ | |
2386 | # define RAND_BITS 15 | |
2387 | # if RAND_MAX == 32767 | |
2388 | # define random rand | |
2389 | # else /* RAND_MAX != 32767 */ | |
2390 | # if RAND_MAX == 2147483647 | |
2391 | # define random() (rand () >> 16) | |
2392 | # else /* RAND_MAX != 2147483647 */ | |
2393 | # ifdef USG | |
2394 | # define random rand | |
2395 | # else | |
2396 | # define random() (rand () >> 16) | |
2a633456 | 2397 | # endif /* !USG */ |
4bb8c8b7 KH |
2398 | # endif /* RAND_MAX != 2147483647 */ |
2399 | # endif /* RAND_MAX != 32767 */ | |
2400 | # endif /* !HAVE_LRAND48 */ | |
2401 | # endif /* !HAVE_RANDOM */ | |
2402 | #endif /* !RAND_BITS */ | |
2e46c7c6 | 2403 | |
4bb8c8b7 KH |
2404 | void |
2405 | seed_random (arg) | |
2406 | long arg; | |
86a5659e | 2407 | { |
4bb8c8b7 KH |
2408 | #ifdef HAVE_RANDOM |
2409 | srandom ((unsigned int)arg); | |
f8b53a82 | 2410 | #else |
4bb8c8b7 | 2411 | # ifdef HAVE_LRAND48 |
76425a49 | 2412 | srand48 (arg); |
4bb8c8b7 KH |
2413 | # else |
2414 | srand ((unsigned int)arg); | |
2415 | # endif | |
2e46c7c6 | 2416 | #endif |
86a5659e JB |
2417 | } |
2418 | ||
4bb8c8b7 KH |
2419 | /* |
2420 | * Build a full Emacs-sized word out of whatever we've got. | |
2421 | * This suffices even for a 64-bit architecture with a 15-bit rand. | |
2422 | */ | |
2423 | long | |
2424 | get_random () | |
2425 | { | |
2426 | long val = random (); | |
2427 | #if VALBITS > RAND_BITS | |
2428 | val = (val << RAND_BITS) ^ random (); | |
2429 | #if VALBITS > 2*RAND_BITS | |
2430 | val = (val << RAND_BITS) ^ random (); | |
2431 | #if VALBITS > 3*RAND_BITS | |
2432 | val = (val << RAND_BITS) ^ random (); | |
2433 | #if VALBITS > 4*RAND_BITS | |
2434 | val = (val << RAND_BITS) ^ random (); | |
2435 | #endif /* need at least 5 */ | |
2436 | #endif /* need at least 4 */ | |
2437 | #endif /* need at least 3 */ | |
2438 | #endif /* need at least 2 */ | |
2439 | return val & ((1L << VALBITS) - 1); | |
2440 | } | |
7088d1ca RM |
2441 | |
2442 | #ifndef HAVE_STRERROR | |
fe03522b | 2443 | #ifndef WINDOWSNT |
7088d1ca RM |
2444 | char * |
2445 | strerror (errnum) | |
2446 | int errnum; | |
2447 | { | |
2448 | extern char *sys_errlist[]; | |
2449 | extern int sys_nerr; | |
2450 | ||
2451 | if (errnum >= 0 && errnum < sys_nerr) | |
2452 | return sys_errlist[errnum]; | |
2453 | return (char *) "Unknown error"; | |
2454 | } | |
fe03522b | 2455 | #endif /* not WINDOWSNT */ |
7088d1ca | 2456 | #endif /* ! HAVE_STRERROR */ |
86a5659e | 2457 | \f |
86a5659e | 2458 | int |
68c45bf0 | 2459 | emacs_open (path, oflag, mode) |
8c2ba7de | 2460 | const char *path; |
86a5659e JB |
2461 | int oflag, mode; |
2462 | { | |
2463 | register int rtnval; | |
68c45bf0 | 2464 | |
86a5659e | 2465 | while ((rtnval = open (path, oflag, mode)) == -1 |
275464e7 SM |
2466 | && (errno == EINTR)) |
2467 | QUIT; | |
86a5659e JB |
2468 | return (rtnval); |
2469 | } | |
2470 | ||
dfcf069d | 2471 | int |
68c45bf0 | 2472 | emacs_close (fd) |
86a5659e JB |
2473 | int fd; |
2474 | { | |
fe111daf | 2475 | int did_retry = 0; |
86a5659e JB |
2476 | register int rtnval; |
2477 | ||
2478 | while ((rtnval = close (fd)) == -1 | |
fe111daf KH |
2479 | && (errno == EINTR)) |
2480 | did_retry = 1; | |
2481 | ||
2482 | /* If close is interrupted SunOS 4.1 may or may not have closed the | |
2483 | file descriptor. If it did the second close will fail with | |
2484 | errno = EBADF. That means we have succeeded. */ | |
2485 | if (rtnval == -1 && did_retry && errno == EBADF) | |
2486 | return 0; | |
2487 | ||
86a5659e JB |
2488 | return rtnval; |
2489 | } | |
2490 | ||
86a5659e | 2491 | int |
68c45bf0 | 2492 | emacs_read (fildes, buf, nbyte) |
86a5659e JB |
2493 | int fildes; |
2494 | char *buf; | |
2495 | unsigned int nbyte; | |
2496 | { | |
2497 | register int rtnval; | |
177c0ea7 | 2498 | |
86a5659e | 2499 | while ((rtnval = read (fildes, buf, nbyte)) == -1 |
275464e7 SM |
2500 | && (errno == EINTR)) |
2501 | QUIT; | |
86a5659e JB |
2502 | return (rtnval); |
2503 | } | |
2504 | ||
2505 | int | |
68c45bf0 | 2506 | emacs_write (fildes, buf, nbyte) |
86a5659e | 2507 | int fildes; |
7b1cc119 | 2508 | const char *buf; |
86a5659e JB |
2509 | unsigned int nbyte; |
2510 | { | |
b95520f5 | 2511 | register int rtnval, bytes_written; |
86a5659e | 2512 | |
b95520f5 BF |
2513 | bytes_written = 0; |
2514 | ||
2515 | while (nbyte > 0) | |
2516 | { | |
2517 | rtnval = write (fildes, buf, nbyte); | |
2518 | ||
2519 | if (rtnval == -1) | |
2520 | { | |
2521 | if (errno == EINTR) | |
77220eeb SM |
2522 | { |
2523 | #ifdef SYNC_INPUT | |
2524 | /* I originally used `QUIT' but that might causes files to | |
2525 | be truncated if you hit C-g in the middle of it. --Stef */ | |
2526 | if (interrupt_input_pending) | |
2527 | handle_async_input (); | |
cb5c5b3d JD |
2528 | if (pending_atimers) |
2529 | do_pending_atimers (); | |
77220eeb SM |
2530 | #endif |
2531 | continue; | |
2532 | } | |
b95520f5 | 2533 | else |
aa670904 | 2534 | return (bytes_written ? bytes_written : -1); |
b95520f5 BF |
2535 | } |
2536 | ||
2537 | buf += rtnval; | |
2538 | nbyte -= rtnval; | |
2539 | bytes_written += rtnval; | |
2540 | } | |
2541 | return (bytes_written); | |
86a5659e | 2542 | } |
86a5659e JB |
2543 | \f |
2544 | #ifdef USG | |
2545 | /* | |
2546 | * All of the following are for USG. | |
2547 | * | |
2548 | * On USG systems the system calls are INTERRUPTIBLE by signals | |
2549 | * that the user program has elected to catch. Thus the system call | |
2550 | * must be retried in these cases. To handle this without massive | |
2551 | * changes in the source code, we remap the standard system call names | |
2552 | * to names for our own functions in sysdep.c that do the system call | |
2553 | * with retries. Actually, for portability reasons, it is good | |
2554 | * programming practice, as this example shows, to limit all actual | |
eb8c3be9 | 2555 | * system calls to a single occurrence in the source. Sure, this |
86a5659e JB |
2556 | * adds an extra level of function call overhead but it is almost |
2557 | * always negligible. Fred Fish, Unisoft Systems Inc. | |
2558 | */ | |
2559 | ||
86a5659e JB |
2560 | /* |
2561 | * Warning, this function may not duplicate 4.2 action properly | |
2562 | * under error conditions. | |
2563 | */ | |
2564 | ||
2565 | #ifndef MAXPATHLEN | |
2566 | /* In 4.1, param.h fails to define this. */ | |
2567 | #define MAXPATHLEN 1024 | |
2568 | #endif | |
2569 | ||
2570 | #ifndef HAVE_GETWD | |
2571 | ||
2572 | char * | |
2573 | getwd (pathname) | |
2574 | char *pathname; | |
2575 | { | |
2576 | char *npath, *spath; | |
2577 | extern char *getcwd (); | |
2578 | ||
9ac0d9e0 | 2579 | BLOCK_INPUT; /* getcwd uses malloc */ |
86a5659e | 2580 | spath = npath = getcwd ((char *) 0, MAXPATHLEN); |
f4a7e5bd | 2581 | if (spath == 0) |
18b6bc73 GM |
2582 | { |
2583 | UNBLOCK_INPUT; | |
2584 | return spath; | |
2585 | } | |
86a5659e JB |
2586 | /* On Altos 3068, getcwd can return @hostname/dir, so discard |
2587 | up to first slash. Should be harmless on other systems. */ | |
2588 | while (*npath && *npath != '/') | |
2589 | npath++; | |
2590 | strcpy (pathname, npath); | |
2591 | free (spath); /* getcwd uses malloc */ | |
9ac0d9e0 | 2592 | UNBLOCK_INPUT; |
86a5659e JB |
2593 | return pathname; |
2594 | } | |
2595 | ||
2596 | #endif /* HAVE_GETWD */ | |
2597 | ||
2598 | /* | |
2599 | * Emulate rename using unlink/link. Note that this is | |
2600 | * only partially correct. Also, doesn't enforce restriction | |
2601 | * that files be of same type (regular->regular, dir->dir, etc). | |
2602 | */ | |
2603 | ||
4746118a JB |
2604 | #ifndef HAVE_RENAME |
2605 | ||
86a5659e | 2606 | rename (from, to) |
19c7afdf JB |
2607 | const char *from; |
2608 | const char *to; | |
86a5659e JB |
2609 | { |
2610 | if (access (from, 0) == 0) | |
2611 | { | |
2612 | unlink (to); | |
2613 | if (link (from, to) == 0) | |
2614 | if (unlink (from) == 0) | |
2615 | return (0); | |
2616 | } | |
2617 | return (-1); | |
2618 | } | |
2619 | ||
4746118a JB |
2620 | #endif |
2621 | ||
86a5659e | 2622 | |
69ab3201 | 2623 | #if defined(HPUX) && !defined(HAVE_PERROR) |
86a5659e JB |
2624 | |
2625 | /* HPUX curses library references perror, but as far as we know | |
2626 | it won't be called. Anyway this definition will do for now. */ | |
2627 | ||
2628 | perror () | |
2629 | { | |
2630 | } | |
69ab3201 | 2631 | #endif /* HPUX and not HAVE_PERROR */ |
86a5659e JB |
2632 | |
2633 | #ifndef HAVE_DUP2 | |
2634 | ||
2635 | /* | |
2636 | * Emulate BSD dup2. First close newd if it already exists. | |
2637 | * Then, attempt to dup oldd. If not successful, call dup2 recursively | |
2638 | * until we are, then close the unsuccessful ones. | |
2639 | */ | |
2640 | ||
2641 | dup2 (oldd, newd) | |
2642 | int oldd; | |
2643 | int newd; | |
2644 | { | |
2645 | register int fd, ret; | |
177c0ea7 | 2646 | |
68c45bf0 | 2647 | emacs_close (newd); |
86a5659e JB |
2648 | |
2649 | #ifdef F_DUPFD | |
68c45bf0 | 2650 | return fcntl (oldd, F_DUPFD, newd); |
86a5659e JB |
2651 | #else |
2652 | fd = dup (old); | |
2653 | if (fd == -1) | |
2654 | return -1; | |
2655 | if (fd == new) | |
2656 | return new; | |
2657 | ret = dup2 (old,new); | |
68c45bf0 | 2658 | emacs_close (fd); |
86a5659e JB |
2659 | return ret; |
2660 | #endif | |
2661 | } | |
2662 | ||
2663 | #endif /* not HAVE_DUP2 */ | |
2664 | ||
2665 | /* | |
2666 | * Gettimeofday. Simulate as much as possible. Only accurate | |
2667 | * to nearest second. Emacs doesn't use tzp so ignore it for now. | |
2668 | * Only needed when subprocesses are defined. | |
2669 | */ | |
2670 | ||
2671 | #ifdef subprocesses | |
86a5659e JB |
2672 | #ifndef HAVE_GETTIMEOFDAY |
2673 | #ifdef HAVE_TIMEVAL | |
177c0ea7 | 2674 | |
86a5659e | 2675 | /* ARGSUSED */ |
dfcf069d | 2676 | int |
86a5659e JB |
2677 | gettimeofday (tp, tzp) |
2678 | struct timeval *tp; | |
2679 | struct timezone *tzp; | |
2680 | { | |
2681 | extern long time (); | |
2682 | ||
177c0ea7 | 2683 | tp->tv_sec = time ((long *)0); |
86a5659e | 2684 | tp->tv_usec = 0; |
4ca7594f RS |
2685 | if (tzp != 0) |
2686 | tzp->tz_minuteswest = -1; | |
dfcf069d | 2687 | return 0; |
86a5659e | 2688 | } |
177c0ea7 | 2689 | |
86a5659e JB |
2690 | #endif |
2691 | #endif | |
7c2fb837 | 2692 | #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */ |
177c0ea7 | 2693 | |
86a5659e JB |
2694 | /* |
2695 | * This function will go away as soon as all the stubs fixed. (fnf) | |
2696 | */ | |
2697 | ||
dfcf069d | 2698 | void |
86a5659e JB |
2699 | croak (badfunc) |
2700 | char *badfunc; | |
2701 | { | |
2702 | printf ("%s not yet implemented\r\n", badfunc); | |
28d440ab | 2703 | reset_all_sys_modes (); |
86a5659e JB |
2704 | exit (1); |
2705 | } | |
2706 | ||
2707 | #endif /* USG */ | |
2708 | \f | |
86a5659e JB |
2709 | /* Directory routines for systems that don't have them. */ |
2710 | ||
2711 | #ifdef SYSV_SYSTEM_DIR | |
2712 | ||
2713 | #include <dirent.h> | |
2714 | ||
9d9a7716 | 2715 | #if !defined (HAVE_CLOSEDIR) |
cfdc57af | 2716 | |
86a5659e | 2717 | int |
9d9a7716 | 2718 | closedir (DIR *dirp /* stream from opendir */) |
86a5659e | 2719 | { |
cfdc57af RS |
2720 | int rtnval; |
2721 | ||
68c45bf0 | 2722 | rtnval = emacs_close (dirp->dd_fd); |
1b929d25 | 2723 | |
65aa44ac JB |
2724 | /* Some systems (like Solaris) allocate the buffer and the DIR all |
2725 | in one block. Why in the world are we freeing this ourselves | |
2726 | anyway? */ | |
89f1e540 | 2727 | #if ! defined (SOLARIS2) |
65aa44ac JB |
2728 | xfree ((char *) dirp->dd_buf); /* directory block defined in <dirent.h> */ |
2729 | #endif | |
9ac0d9e0 | 2730 | xfree ((char *) dirp); |
cfdc57af RS |
2731 | |
2732 | return rtnval; | |
86a5659e | 2733 | } |
9d9a7716 | 2734 | #endif /* not HAVE_CLOSEDIR */ |
86a5659e JB |
2735 | #endif /* SYSV_SYSTEM_DIR */ |
2736 | ||
23524fb9 | 2737 | \f |
53ea491a | 2738 | int |
061ea326 | 2739 | set_file_times (filename, atime, mtime) |
8c2ba7de | 2740 | const char *filename; |
53ea491a KH |
2741 | EMACS_TIME atime, mtime; |
2742 | { | |
2743 | #ifdef HAVE_UTIMES | |
2744 | struct timeval tv[2]; | |
2745 | tv[0] = atime; | |
2746 | tv[1] = mtime; | |
8334eb21 RS |
2747 | return utimes (filename, tv); |
2748 | #else /* not HAVE_UTIMES */ | |
53ea491a KH |
2749 | struct utimbuf utb; |
2750 | utb.actime = EMACS_SECS (atime); | |
2751 | utb.modtime = EMACS_SECS (mtime); | |
8334eb21 RS |
2752 | return utime (filename, &utb); |
2753 | #endif /* not HAVE_UTIMES */ | |
53ea491a KH |
2754 | } |
2755 | \f | |
23524fb9 JB |
2756 | /* mkdir and rmdir functions, for systems which don't have them. */ |
2757 | ||
2758 | #ifndef HAVE_MKDIR | |
2759 | /* | |
2760 | * Written by Robert Rother, Mariah Corporation, August 1985. | |
2761 | * | |
2762 | * If you want it, it's yours. All I ask in return is that if you | |
2763 | * figure out how to do this in a Bourne Shell script you send me | |
2764 | * a copy. | |
2765 | * sdcsvax!rmr or rmr@uscd | |
2766 | * | |
2767 | * Severely hacked over by John Gilmore to make a 4.2BSD compatible | |
db9cd97a | 2768 | * subroutine. 11Mar86; hoptoad!gnu |
23524fb9 JB |
2769 | * |
2770 | * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, | |
2771 | * subroutine didn't return EEXIST. It does now. | |
2772 | */ | |
2773 | ||
2774 | /* | |
2775 | * Make a directory. | |
2776 | */ | |
f3892946 RS |
2777 | #ifdef MKDIR_PROTOTYPE |
2778 | MKDIR_PROTOTYPE | |
2779 | #else | |
23524fb9 JB |
2780 | int |
2781 | mkdir (dpath, dmode) | |
2782 | char *dpath; | |
2783 | int dmode; | |
f3892946 | 2784 | #endif |
23524fb9 | 2785 | { |
039f26a4 | 2786 | int cpid, status, fd; |
23524fb9 JB |
2787 | struct stat statbuf; |
2788 | ||
2789 | if (stat (dpath, &statbuf) == 0) | |
2790 | { | |
2791 | errno = EEXIST; /* Stat worked, so it already exists */ | |
2792 | return -1; | |
2793 | } | |
2794 | ||
2795 | /* If stat fails for a reason other than non-existence, return error */ | |
2796 | if (errno != ENOENT) | |
2797 | return -1; | |
2798 | ||
039f26a4 | 2799 | synch_process_alive = 1; |
23524fb9 JB |
2800 | switch (cpid = fork ()) |
2801 | { | |
2802 | ||
039f26a4 | 2803 | case -1: /* Error in fork */ |
23524fb9 JB |
2804 | return (-1); /* Errno is set already */ |
2805 | ||
2806 | case 0: /* Child process */ | |
2807 | /* | |
2808 | * Cheap hack to set mode of new directory. Since this | |
2809 | * child process is going away anyway, we zap its umask. | |
2810 | * FIXME, this won't suffice to set SUID, SGID, etc. on this | |
2811 | * directory. Does anybody care? | |
2812 | */ | |
2813 | status = umask (0); /* Get current umask */ | |
2814 | status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ | |
68c45bf0 | 2815 | fd = emacs_open ("/dev/null", O_RDWR, 0); |
039f26a4 RS |
2816 | if (fd >= 0) |
2817 | { | |
2818 | dup2 (fd, 0); | |
2819 | dup2 (fd, 1); | |
2820 | dup2 (fd, 2); | |
2821 | } | |
23524fb9 JB |
2822 | execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); |
2823 | _exit (-1); /* Can't exec /bin/mkdir */ | |
2824 | ||
2825 | default: /* Parent process */ | |
039f26a4 | 2826 | wait_for_termination (cpid); |
23524fb9 JB |
2827 | } |
2828 | ||
6b0824c9 JD |
2829 | if (synch_process_death != 0 || synch_process_retcode != 0 |
2830 | || synch_process_termsig != 0) | |
23524fb9 JB |
2831 | { |
2832 | errno = EIO; /* We don't know why, but */ | |
2833 | return -1; /* /bin/mkdir failed */ | |
2834 | } | |
2835 | ||
2836 | return 0; | |
2837 | } | |
2838 | #endif /* not HAVE_MKDIR */ | |
2839 | ||
2840 | #ifndef HAVE_RMDIR | |
2841 | int | |
2842 | rmdir (dpath) | |
2843 | char *dpath; | |
2844 | { | |
039f26a4 | 2845 | int cpid, status, fd; |
23524fb9 JB |
2846 | struct stat statbuf; |
2847 | ||
2848 | if (stat (dpath, &statbuf) != 0) | |
2849 | { | |
2850 | /* Stat just set errno. We don't have to */ | |
2851 | return -1; | |
2852 | } | |
2853 | ||
039f26a4 | 2854 | synch_process_alive = 1; |
23524fb9 JB |
2855 | switch (cpid = fork ()) |
2856 | { | |
2857 | ||
039f26a4 | 2858 | case -1: /* Error in fork */ |
23524fb9 JB |
2859 | return (-1); /* Errno is set already */ |
2860 | ||
2861 | case 0: /* Child process */ | |
68c45bf0 | 2862 | fd = emacs_open ("/dev/null", O_RDWR, 0); |
039f26a4 RS |
2863 | if (fd >= 0) |
2864 | { | |
2865 | dup2 (fd, 0); | |
2866 | dup2 (fd, 1); | |
2867 | dup2 (fd, 2); | |
2868 | } | |
f560db78 RS |
2869 | execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); |
2870 | _exit (-1); /* Can't exec /bin/rmdir */ | |
2871 | ||
207bdbdb | 2872 | default: /* Parent process */ |
f560db78 | 2873 | wait_for_termination (cpid); |
23524fb9 JB |
2874 | } |
2875 | ||
6b0824c9 JD |
2876 | if (synch_process_death != 0 || synch_process_retcode != 0 |
2877 | || synch_process_termsig != 0) | |
23524fb9 JB |
2878 | { |
2879 | errno = EIO; /* We don't know why, but */ | |
f560db78 | 2880 | return -1; /* /bin/rmdir failed */ |
23524fb9 JB |
2881 | } |
2882 | ||
2883 | return 0; | |
2884 | } | |
2885 | #endif /* !HAVE_RMDIR */ | |
2886 | ||
86a5659e | 2887 | \f |
7c2fb837 | 2888 | #ifndef BSTRING |
86a5659e | 2889 | |
7c2fb837 | 2890 | #ifndef bzero |
86a5659e | 2891 | |
7c2fb837 DN |
2892 | void |
2893 | bzero (b, length) | |
2894 | register char *b; | |
2895 | register int length; | |
86a5659e | 2896 | { |
7c2fb837 DN |
2897 | while (length-- > 0) |
2898 | *b++ = 0; | |
86a5659e JB |
2899 | } |
2900 | ||
7c2fb837 DN |
2901 | #endif /* no bzero */ |
2902 | #endif /* BSTRING */ | |
177c0ea7 | 2903 | |
7c2fb837 DN |
2904 | #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) |
2905 | #undef bcopy | |
86a5659e | 2906 | |
7c2fb837 DN |
2907 | /* Saying `void' requires a declaration, above, where bcopy is used |
2908 | and that declaration causes pain for systems where bcopy is a macro. */ | |
2909 | bcopy (b1, b2, length) | |
2910 | register char *b1; | |
2911 | register char *b2; | |
2912 | register int length; | |
2913 | { | |
2914 | while (length-- > 0) | |
2915 | *b2++ = *b1++; | |
2916 | } | |
2917 | #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */ | |
86a5659e | 2918 | |
7c2fb837 DN |
2919 | #ifndef BSTRING |
2920 | #ifndef bcmp | |
86a5659e | 2921 | int |
7c2fb837 DN |
2922 | bcmp (b1, b2, length) /* This could be a macro! */ |
2923 | register char *b1; | |
2924 | register char *b2; | |
2925 | register int length; | |
86a5659e | 2926 | { |
7c2fb837 DN |
2927 | while (length-- > 0) |
2928 | if (*b1++ != *b2++) | |
2929 | return 1; | |
86a5659e JB |
2930 | |
2931 | return 0; | |
2932 | } | |
51417996 RS |
2933 | #endif /* no bcmp */ |
2934 | #endif /* not BSTRING */ | |
68c45bf0 PE |
2935 | \f |
2936 | #ifndef HAVE_STRSIGNAL | |
2937 | char * | |
2938 | strsignal (code) | |
2939 | int code; | |
2940 | { | |
2941 | char *signame = 0; | |
2942 | ||
2943 | if (0 <= code && code < NSIG) | |
2944 | { | |
68c45bf0 PE |
2945 | /* Cast to suppress warning if the table has const char *. */ |
2946 | signame = (char *) sys_siglist[code]; | |
68c45bf0 | 2947 | } |
c4ea52a6 | 2948 | |
68c45bf0 PE |
2949 | return signame; |
2950 | } | |
2951 | #endif /* HAVE_STRSIGNAL */ | |
d888760c GM |
2952 | \f |
2953 | #ifdef HAVE_TERMIOS | |
2954 | /* For make-serial-process */ | |
2955 | int serial_open (char *port) | |
2956 | { | |
2957 | int fd = -1; | |
2958 | ||
2959 | fd = emacs_open ((char*) port, | |
2960 | O_RDWR | |
2961 | #ifdef O_NONBLOCK | |
2962 | | O_NONBLOCK | |
2963 | #else | |
2964 | | O_NDELAY | |
2965 | #endif | |
2966 | #ifdef O_NOCTTY | |
2967 | | O_NOCTTY | |
2968 | #endif | |
2969 | , 0); | |
2970 | if (fd < 0) | |
2971 | { | |
2972 | error ("Could not open %s: %s", | |
2973 | port, emacs_strerror (errno)); | |
2974 | } | |
2975 | #ifdef TIOCEXCL | |
2976 | ioctl (fd, TIOCEXCL, (char *) 0); | |
2977 | #endif | |
2978 | ||
2979 | return fd; | |
2980 | } | |
2981 | #endif /* TERMIOS */ | |
2982 | ||
2983 | #ifdef HAVE_TERMIOS | |
759d3f32 SM |
2984 | |
2985 | #if !defined (HAVE_CFMAKERAW) | |
2986 | /* Workaround for targets which are missing cfmakeraw. */ | |
2987 | /* Pasted from man page. */ | |
2988 | static void cfmakeraw (struct termios *termios_p) | |
2989 | { | |
2990 | termios_p->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); | |
2991 | termios_p->c_oflag &= ~OPOST; | |
2992 | termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); | |
2993 | termios_p->c_cflag &= ~(CSIZE|PARENB); | |
2994 | termios_p->c_cflag |= CS8; | |
2995 | } | |
2996 | #endif /* !defined (HAVE_CFMAKERAW */ | |
2997 | ||
2998 | #if !defined (HAVE_CFSETSPEED) | |
2999 | /* Workaround for targets which are missing cfsetspeed. */ | |
3000 | static int cfsetspeed (struct termios *termios_p, speed_t vitesse) | |
3001 | { | |
3002 | return (cfsetispeed (termios_p, vitesse) | |
3003 | + cfsetospeed (termios_p, vitesse)); | |
3004 | } | |
3005 | #endif | |
3006 | ||
d888760c GM |
3007 | /* For serial-process-configure */ |
3008 | void | |
3009 | serial_configure (struct Lisp_Process *p, | |
3010 | Lisp_Object contact) | |
3011 | { | |
3012 | Lisp_Object childp2 = Qnil; | |
3013 | Lisp_Object tem = Qnil; | |
3014 | struct termios attr; | |
3015 | int err = -1; | |
3016 | char summary[4] = "???"; /* This usually becomes "8N1". */ | |
3017 | ||
3018 | childp2 = Fcopy_sequence (p->childp); | |
3019 | ||
3020 | /* Read port attributes and prepare default configuration. */ | |
3021 | err = tcgetattr (p->outfd, &attr); | |
3022 | if (err != 0) | |
3023 | error ("tcgetattr() failed: %s", emacs_strerror (errno)); | |
3024 | cfmakeraw (&attr); | |
3025 | #if defined (CLOCAL) | |
3026 | attr.c_cflag |= CLOCAL; | |
3027 | #endif | |
3028 | #if defined (CREAD) | |
3029 | attr.c_cflag | CREAD; | |
3030 | #endif | |
3031 | ||
3032 | /* Configure speed. */ | |
3033 | if (!NILP (Fplist_member (contact, QCspeed))) | |
3034 | tem = Fplist_get (contact, QCspeed); | |
3035 | else | |
3036 | tem = Fplist_get (p->childp, QCspeed); | |
3037 | CHECK_NUMBER (tem); | |
3038 | err = cfsetspeed (&attr, XINT (tem)); | |
3039 | if (err != 0) | |
3040 | error ("cfsetspeed(%d) failed: %s", XINT (tem), emacs_strerror (errno)); | |
3041 | childp2 = Fplist_put (childp2, QCspeed, tem); | |
3042 | ||
3043 | /* Configure bytesize. */ | |
3044 | if (!NILP (Fplist_member (contact, QCbytesize))) | |
3045 | tem = Fplist_get (contact, QCbytesize); | |
3046 | else | |
3047 | tem = Fplist_get (p->childp, QCbytesize); | |
3048 | if (NILP (tem)) | |
3049 | tem = make_number (8); | |
3050 | CHECK_NUMBER (tem); | |
3051 | if (XINT (tem) != 7 && XINT (tem) != 8) | |
3052 | error (":bytesize must be nil (8), 7, or 8"); | |
3053 | summary[0] = XINT(tem) + '0'; | |
3054 | #if defined (CSIZE) && defined (CS7) && defined (CS8) | |
3055 | attr.c_cflag &= ~CSIZE; | |
3056 | attr.c_cflag |= ((XINT (tem) == 7) ? CS7 : CS8); | |
3057 | #else | |
16bad4dd | 3058 | /* Don't error on bytesize 8, which should be set by cfmakeraw. */ |
d888760c GM |
3059 | if (XINT (tem) != 8) |
3060 | error ("Bytesize cannot be changed"); | |
3061 | #endif | |
3062 | childp2 = Fplist_put (childp2, QCbytesize, tem); | |
3063 | ||
3064 | /* Configure parity. */ | |
3065 | if (!NILP (Fplist_member (contact, QCparity))) | |
3066 | tem = Fplist_get (contact, QCparity); | |
3067 | else | |
3068 | tem = Fplist_get (p->childp, QCparity); | |
3069 | if (!NILP (tem) && !EQ (tem, Qeven) && !EQ (tem, Qodd)) | |
3070 | error (":parity must be nil (no parity), `even', or `odd'"); | |
3071 | #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK) | |
3072 | attr.c_cflag &= ~(PARENB | PARODD); | |
3073 | attr.c_iflag &= ~(IGNPAR | INPCK); | |
3074 | if (NILP (tem)) | |
3075 | { | |
3076 | summary[1] = 'N'; | |
3077 | } | |
3078 | else if (EQ (tem, Qeven)) | |
3079 | { | |
3080 | summary[1] = 'E'; | |
3081 | attr.c_cflag |= PARENB; | |
3082 | attr.c_iflag |= (IGNPAR | INPCK); | |
3083 | } | |
3084 | else if (EQ (tem, Qodd)) | |
3085 | { | |
3086 | summary[1] = 'O'; | |
3087 | attr.c_cflag |= (PARENB | PARODD); | |
3088 | attr.c_iflag |= (IGNPAR | INPCK); | |
3089 | } | |
3090 | #else | |
16bad4dd | 3091 | /* Don't error on no parity, which should be set by cfmakeraw. */ |
d888760c GM |
3092 | if (!NILP (tem)) |
3093 | error ("Parity cannot be configured"); | |
3094 | #endif | |
3095 | childp2 = Fplist_put (childp2, QCparity, tem); | |
3096 | ||
3097 | /* Configure stopbits. */ | |
3098 | if (!NILP (Fplist_member (contact, QCstopbits))) | |
3099 | tem = Fplist_get (contact, QCstopbits); | |
3100 | else | |
3101 | tem = Fplist_get (p->childp, QCstopbits); | |
3102 | if (NILP (tem)) | |
3103 | tem = make_number (1); | |
3104 | CHECK_NUMBER (tem); | |
3105 | if (XINT (tem) != 1 && XINT (tem) != 2) | |
3106 | error (":stopbits must be nil (1 stopbit), 1, or 2"); | |
3107 | summary[2] = XINT (tem) + '0'; | |
3108 | #if defined (CSTOPB) | |
3109 | attr.c_cflag &= ~CSTOPB; | |
3110 | if (XINT (tem) == 2) | |
3111 | attr.c_cflag |= CSTOPB; | |
3112 | #else | |
16bad4dd | 3113 | /* Don't error on 1 stopbit, which should be set by cfmakeraw. */ |
d888760c GM |
3114 | if (XINT (tem) != 1) |
3115 | error ("Stopbits cannot be configured"); | |
3116 | #endif | |
3117 | childp2 = Fplist_put (childp2, QCstopbits, tem); | |
3118 | ||
3119 | /* Configure flowcontrol. */ | |
3120 | if (!NILP (Fplist_member (contact, QCflowcontrol))) | |
3121 | tem = Fplist_get (contact, QCflowcontrol); | |
3122 | else | |
3123 | tem = Fplist_get (p->childp, QCflowcontrol); | |
3124 | if (!NILP (tem) && !EQ (tem, Qhw) && !EQ (tem, Qsw)) | |
3125 | error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'"); | |
3126 | #if defined (CRTSCTS) | |
3127 | attr.c_cflag &= ~CRTSCTS; | |
3128 | #endif | |
3129 | #if defined (CNEW_RTSCTS) | |
3130 | attr.c_cflag &= ~CNEW_RTSCTS; | |
3131 | #endif | |
3132 | #if defined (IXON) && defined (IXOFF) | |
3133 | attr.c_iflag &= ~(IXON | IXOFF); | |
3134 | #endif | |
3135 | if (NILP (tem)) | |
3136 | { | |
3137 | /* Already configured. */ | |
3138 | } | |
3139 | else if (EQ (tem, Qhw)) | |
3140 | { | |
3141 | #if defined (CRTSCTS) | |
3142 | attr.c_cflag |= CRTSCTS; | |
3143 | #elif defined (CNEW_RTSCTS) | |
3144 | attr.c_cflag |= CNEW_RTSCTS; | |
3145 | #else | |
3146 | error ("Hardware flowcontrol (RTS/CTS) not supported"); | |
3147 | #endif | |
3148 | } | |
3149 | else if (EQ (tem, Qsw)) | |
3150 | { | |
3151 | #if defined (IXON) && defined (IXOFF) | |
3152 | attr.c_iflag |= (IXON | IXOFF); | |
3153 | #else | |
3154 | error ("Software flowcontrol (XON/XOFF) not supported"); | |
3155 | #endif | |
3156 | } | |
3157 | childp2 = Fplist_put (childp2, QCflowcontrol, tem); | |
3158 | ||
3159 | /* Activate configuration. */ | |
3160 | err = tcsetattr (p->outfd, TCSANOW, &attr); | |
3161 | if (err != 0) | |
3162 | error ("tcsetattr() failed: %s", emacs_strerror (errno)); | |
3163 | ||
3164 | childp2 = Fplist_put (childp2, QCsummary, build_string (summary)); | |
3165 | p->childp = childp2; | |
3166 | ||
3167 | } | |
3168 | #endif /* TERMIOS */ | |
c4ea52a6 | 3169 | |
ab5796a9 MB |
3170 | /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf |
3171 | (do not change this comment) */ |