Commit | Line | Data |
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f927c5ae | 1 | /* Fully extensible Emacs, running on Unix, intended for GNU. |
be06db9a | 2 | Copyright (C) 1985, 1986, 1987, 1993, 1994 Free Software Foundation, Inc. |
f927c5ae JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
40be253a | 8 | the Free Software Foundation; either version 2, or (at your option) |
f927c5ae JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | ||
21 | #include <signal.h> | |
22 | #include <errno.h> | |
23 | ||
18160b98 | 24 | #include <config.h> |
f927c5ae JB |
25 | #include <stdio.h> |
26 | ||
27 | #include <sys/types.h> | |
28 | #include <sys/file.h> | |
29 | ||
30 | #ifdef VMS | |
31 | #include <ssdef.h> | |
32 | #endif | |
33 | ||
f927c5ae JB |
34 | #ifdef BSD |
35 | #include <sys/ioctl.h> | |
36 | #endif | |
37 | ||
38 | #ifdef APOLLO | |
39 | #ifndef APOLLO_SR10 | |
40 | #include <default_acl.h> | |
41 | #endif | |
42 | #endif | |
43 | ||
f927c5ae JB |
44 | #include "lisp.h" |
45 | #include "commands.h" | |
bef79ee4 | 46 | #include "intervals.h" |
f927c5ae | 47 | |
edc8ae07 | 48 | #include "systty.h" |
8090eb09 | 49 | #include "syssignal.h" |
6c362a8b | 50 | #include "process.h" |
a41f8bed | 51 | |
f927c5ae JB |
52 | #ifndef O_RDWR |
53 | #define O_RDWR 2 | |
54 | #endif | |
55 | ||
f927c5ae JB |
56 | /* Command line args from shell, as list of strings */ |
57 | Lisp_Object Vcommand_line_args; | |
58 | ||
59653951 JB |
59 | /* The name under which Emacs was invoked, with any leading directory |
60 | names discarded. */ | |
61 | Lisp_Object Vinvocation_name; | |
62 | ||
ace40a69 RS |
63 | /* The directory name from which Emacs was invoked. */ |
64 | Lisp_Object Vinvocation_directory; | |
65 | ||
e5d77022 JB |
66 | /* Hook run by `kill-emacs' before it does really anything. */ |
67 | Lisp_Object Vkill_emacs_hook; | |
68 | ||
f927c5ae JB |
69 | /* Set nonzero after Emacs has started up the first time. |
70 | Prevents reinitialization of the Lisp world and keymaps | |
71 | on subsequent starts. */ | |
72 | int initialized; | |
73 | ||
271c7b7c | 74 | /* Variable whose value is symbol giving operating system type. */ |
f927c5ae | 75 | Lisp_Object Vsystem_type; |
271c7b7c RS |
76 | |
77 | /* Variable whose value is string giving configuration built for. */ | |
78 | Lisp_Object Vsystem_configuration; | |
f927c5ae JB |
79 | |
80 | /* If non-zero, emacs should not attempt to use an window-specific code, | |
81 | but instead should use the virtual terminal under which it was started */ | |
82 | int inhibit_window_system; | |
83 | ||
5aa7f46a JB |
84 | /* If nonzero, set Emacs to run at this priority. This is also used |
85 | in child_setup and sys_suspend to make sure subshells run at normal | |
86 | priority; Those functions have their own extern declaration. */ | |
3005da00 RS |
87 | int emacs_priority; |
88 | ||
9ae8f997 JB |
89 | #ifdef BSD |
90 | /* See sysdep.c. */ | |
91 | extern int inherited_pgroup; | |
92 | #endif | |
93 | ||
f927c5ae JB |
94 | #ifdef HAVE_X_WINDOWS |
95 | /* If non-zero, -d was specified, meaning we're using some window system. */ | |
96 | int display_arg; | |
97 | #endif | |
98 | ||
99 | /* An address near the bottom of the stack. | |
100 | Tells GC how to save a copy of the stack. */ | |
101 | char *stack_bottom; | |
102 | ||
103 | #ifdef HAVE_X_WINDOWS | |
104 | extern Lisp_Object Vwindow_system; | |
105 | #endif /* HAVE_X_WINDOWS */ | |
106 | ||
107 | #ifdef USG_SHARED_LIBRARIES | |
108 | /* If nonzero, this is the place to put the end of the writable segment | |
109 | at startup. */ | |
110 | ||
111 | unsigned int bss_end = 0; | |
112 | #endif | |
113 | ||
114 | /* Nonzero means running Emacs without interactive terminal. */ | |
115 | ||
116 | int noninteractive; | |
117 | ||
118 | /* Value of Lisp variable `noninteractive'. | |
119 | Normally same as C variable `noninteractive' | |
120 | but nothing terrible happens if user sets this one. */ | |
121 | ||
122 | int noninteractive1; | |
123 | \f | |
124 | /* Signal code for the fatal signal that was received */ | |
125 | int fatal_error_code; | |
126 | ||
127 | /* Nonzero if handling a fatal error already */ | |
128 | int fatal_error_in_progress; | |
129 | ||
130 | /* Handle bus errors, illegal instruction, etc. */ | |
2447c626 | 131 | SIGTYPE |
f927c5ae JB |
132 | fatal_error_signal (sig) |
133 | int sig; | |
134 | { | |
f927c5ae JB |
135 | fatal_error_code = sig; |
136 | signal (sig, SIG_DFL); | |
137 | ||
138 | /* If fatal error occurs in code below, avoid infinite recursion. */ | |
8090eb09 JB |
139 | if (! fatal_error_in_progress) |
140 | { | |
141 | fatal_error_in_progress = 1; | |
f927c5ae | 142 | |
f7ab4e3d | 143 | shut_down_emacs (sig, 0, Qnil); |
8090eb09 | 144 | } |
f927c5ae JB |
145 | |
146 | #ifdef VMS | |
f927c5ae JB |
147 | LIB$STOP (SS$_ABORT); |
148 | #else | |
8090eb09 JB |
149 | /* Signal the same code; this time it will really be fatal. |
150 | Remember that since we're in a signal handler, the signal we're | |
151 | going to send is probably blocked, so we have to unblock it if we | |
152 | want to really receive it. */ | |
29b89fe0 | 153 | #ifndef MSDOS |
a90538cb | 154 | sigunblock (sigmask (fatal_error_code)); |
29b89fe0 | 155 | #endif |
f927c5ae JB |
156 | kill (getpid (), fatal_error_code); |
157 | #endif /* not VMS */ | |
158 | } | |
271c7b7c RS |
159 | |
160 | #ifdef SIGDANGER | |
161 | ||
162 | /* Handle bus errors, illegal instruction, etc. */ | |
163 | SIGTYPE | |
164 | memory_warning_signal (sig) | |
165 | int sig; | |
166 | { | |
167 | signal (sig, memory_warning_signal); | |
168 | ||
169 | malloc_warning ("Operating system warns that virtual memory is running low.\n"); | |
170 | } | |
171 | #endif | |
f927c5ae JB |
172 | \f |
173 | /* Code for dealing with Lisp access to the Unix command line */ | |
174 | ||
175 | static | |
176 | init_cmdargs (argc, argv, skip_args) | |
177 | int argc; | |
178 | char **argv; | |
179 | int skip_args; | |
180 | { | |
181 | register int i; | |
182 | ||
cb421be8 | 183 | Vinvocation_name = Ffile_name_nondirectory (build_string (argv[0])); |
ace40a69 RS |
184 | Vinvocation_directory = Ffile_name_directory (build_string (argv[0])); |
185 | /* If we got no directory in argv[0], search PATH to find where | |
186 | Emacs actually came from. */ | |
187 | if (NILP (Vinvocation_directory)) | |
188 | { | |
189 | Lisp_Object found; | |
190 | int yes = openp (Vexec_path, Vinvocation_name, | |
6c362a8b | 191 | EXEC_SUFFIXES, &found, 1); |
e443f843 | 192 | if (yes == 1) |
ace40a69 RS |
193 | Vinvocation_directory = Ffile_name_directory (found); |
194 | } | |
59653951 | 195 | |
f927c5ae JB |
196 | Vcommand_line_args = Qnil; |
197 | ||
198 | for (i = argc - 1; i >= 0; i--) | |
199 | { | |
200 | if (i == 0 || i > skip_args) | |
201 | Vcommand_line_args | |
202 | = Fcons (build_string (argv[i]), Vcommand_line_args); | |
203 | } | |
204 | } | |
59653951 JB |
205 | |
206 | DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0, | |
207 | "Return the program name that was used to run Emacs.\n\ | |
208 | Any directory names are omitted.") | |
209 | () | |
210 | { | |
211 | return Fcopy_sequence (Vinvocation_name); | |
212 | } | |
213 | ||
ace40a69 RS |
214 | DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory, |
215 | 0, 0, 0, | |
216 | "Return the directory name in which the Emacs executable was located") | |
217 | () | |
218 | { | |
219 | return Fcopy_sequence (Vinvocation_directory); | |
220 | } | |
221 | ||
f927c5ae JB |
222 | \f |
223 | #ifdef VMS | |
224 | #ifdef LINK_CRTL_SHARE | |
225 | #ifdef SHAREABLE_LIB_BUG | |
226 | extern noshare char **environ; | |
227 | #endif /* SHAREABLE_LIB_BUG */ | |
228 | #endif /* LINK_CRTL_SHARE */ | |
229 | #endif /* VMS */ | |
230 | ||
a90538cb | 231 | #ifndef ORDINARY_LINK |
efd241cc RS |
232 | /* We don't include crtbegin.o and crtend.o in the link, |
233 | so these functions and variables might be missed. | |
234 | Provide dummy definitions to avoid error. | |
235 | (We don't have any real constructors or destructors.) */ | |
236 | #ifdef __GNUC__ | |
c83a7064 | 237 | __do_global_ctors () |
efd241cc | 238 | {} |
c83a7064 RS |
239 | __do_global_ctors_aux () |
240 | {} | |
33143604 RS |
241 | __do_global_dtors () |
242 | {} | |
64c1864a RS |
243 | /* Linux has a bug in its library; avoid an error. */ |
244 | #ifndef LINUX | |
c83a7064 | 245 | char * __CTOR_LIST__[2] = { (char *) (-1), 0 }; |
64c1864a | 246 | #endif |
c83a7064 RS |
247 | char * __DTOR_LIST__[2] = { (char *) (-1), 0 }; |
248 | __main () | |
efd241cc | 249 | {} |
efd241cc | 250 | #endif /* __GNUC__ */ |
a90538cb | 251 | #endif /* ORDINARY_LINK */ |
efd241cc | 252 | |
f927c5ae JB |
253 | /* ARGSUSED */ |
254 | main (argc, argv, envp) | |
255 | int argc; | |
256 | char **argv; | |
257 | char **envp; | |
258 | { | |
259 | char stack_bottom_variable; | |
260 | int skip_args = 0; | |
261 | extern int errno; | |
262 | extern sys_nerr; | |
be06db9a | 263 | extern char *strerror (); |
f927c5ae JB |
264 | extern void malloc_warning (); |
265 | ||
266 | /* Map in shared memory, if we are using that. */ | |
267 | #ifdef HAVE_SHM | |
268 | if (argc > 1 && !strcmp (argv[1], "-nl")) | |
269 | { | |
270 | map_in_data (0); | |
271 | /* The shared memory was just restored, which clobbered this. */ | |
272 | skip_args = 1; | |
273 | } | |
274 | else | |
275 | { | |
276 | map_in_data (1); | |
277 | /* The shared memory was just restored, which clobbered this. */ | |
278 | skip_args = 0; | |
279 | } | |
280 | #endif | |
281 | ||
19a36ec6 | 282 | #ifdef NeXT |
4b163808 | 283 | extern int malloc_cookie; |
19a36ec6 RS |
284 | |
285 | /* This helps out unexnext.c. */ | |
286 | if (initialized) | |
287 | if (malloc_jumpstart (malloc_cookie) != 0) | |
288 | printf ("malloc jumpstart failed!\n"); | |
289 | #endif /* NeXT */ | |
290 | ||
f927c5ae | 291 | #ifdef HAVE_X_WINDOWS |
fb8e9847 JB |
292 | /* Stupid kludge to catch command-line display spec. We can't |
293 | handle this argument entirely in window system dependent code | |
294 | because we don't even know which window system dependent code | |
295 | to run until we've recognized this argument. */ | |
f927c5ae JB |
296 | { |
297 | int i; | |
298 | ||
299 | for (i = 1; (i < argc && ! display_arg); i++) | |
92381c7c | 300 | if (!strcmp (argv[i], "-d") || !strcmp (argv[i], "-display")) |
f927c5ae JB |
301 | display_arg = 1; |
302 | } | |
303 | #endif | |
304 | ||
305 | #ifdef VMS | |
306 | /* If -map specified, map the data file in */ | |
307 | if (argc > 2 && ! strcmp (argv[1], "-map")) | |
308 | { | |
309 | skip_args = 2; | |
310 | mapin_data (argv[2]); | |
311 | } | |
312 | ||
313 | #ifdef LINK_CRTL_SHARE | |
314 | #ifdef SHAREABLE_LIB_BUG | |
315 | /* Bletcherous shared libraries! */ | |
316 | if (!stdin) | |
317 | stdin = fdopen (0, "r"); | |
318 | if (!stdout) | |
319 | stdout = fdopen (1, "w"); | |
320 | if (!stderr) | |
321 | stderr = fdopen (2, "w"); | |
322 | if (!environ) | |
323 | environ = envp; | |
324 | #endif /* SHAREABLE_LIB_BUG */ | |
325 | #endif /* LINK_CRTL_SHARE */ | |
326 | #endif /* VMS */ | |
327 | ||
328 | /* Record (approximately) where the stack begins. */ | |
329 | stack_bottom = &stack_bottom_variable; | |
330 | ||
331 | #ifdef RUN_TIME_REMAP | |
332 | if (initialized) | |
333 | run_time_remap (argv[0]); | |
334 | #endif | |
335 | ||
336 | #ifdef USG_SHARED_LIBRARIES | |
337 | if (bss_end) | |
338 | brk (bss_end); | |
339 | #endif | |
340 | ||
341 | clearerr (stdin); | |
9ae8f997 | 342 | |
f927c5ae | 343 | #ifdef BSD |
e8589b11 RS |
344 | if (initialized) |
345 | { | |
346 | inherited_pgroup = EMACS_GETPGRP (0); | |
347 | setpgrp (0, getpid ()); | |
348 | } | |
f927c5ae JB |
349 | #endif |
350 | ||
9ae8f997 | 351 | |
f927c5ae JB |
352 | #ifdef APOLLO |
353 | #ifndef APOLLO_SR10 | |
354 | /* If USE_DOMAIN_ACLS environment variable exists, | |
355 | use ACLs rather than UNIX modes. */ | |
356 | if (egetenv ("USE_DOMAIN_ACLS")) | |
357 | default_acl (USE_DEFACL); | |
358 | #endif | |
359 | #endif /* APOLLO */ | |
360 | ||
361 | #ifndef SYSTEM_MALLOC | |
362 | if (! initialized) | |
9ac0d9e0 JB |
363 | { |
364 | /* Arrange to get warning messages as memory fills up. */ | |
365 | memory_warnings (0, malloc_warning); | |
366 | ||
367 | /* Arrange to disable interrupt input while malloc and friends are | |
368 | running. */ | |
369 | uninterrupt_malloc (); | |
370 | } | |
f927c5ae JB |
371 | #endif /* not SYSTEM_MALLOC */ |
372 | ||
29b89fe0 RS |
373 | #ifdef MSDOS |
374 | /* We do all file input/output as binary files. When we need to translate | |
375 | newlines, we do that manually. */ | |
376 | _fmode = O_BINARY; | |
377 | (stdin)->_flag &= ~_IOTEXT; | |
378 | (stdout)->_flag &= ~_IOTEXT; | |
379 | (stderr)->_flag &= ~_IOTEXT; | |
380 | #endif /* MSDOS */ | |
381 | ||
3005da00 RS |
382 | #ifdef PRIO_PROCESS |
383 | if (emacs_priority) | |
5aa7f46a | 384 | nice (emacs_priority); |
f927c5ae | 385 | setuid (getuid ()); |
3005da00 | 386 | #endif /* PRIO_PROCESS */ |
f927c5ae | 387 | |
f927c5ae JB |
388 | inhibit_window_system = 0; |
389 | ||
4fc0b45b | 390 | /* Handle the -t switch, which specifies filename to use as terminal */ |
f927c5ae JB |
391 | if (skip_args + 2 < argc && !strcmp (argv[skip_args + 1], "-t")) |
392 | { | |
393 | int result; | |
394 | skip_args += 2; | |
395 | close (0); | |
396 | close (1); | |
397 | result = open (argv[skip_args], O_RDWR, 2 ); | |
398 | if (result < 0) | |
399 | { | |
be06db9a | 400 | char *errstring = strerror (errno); |
f927c5ae JB |
401 | fprintf (stderr, "emacs: %s: %s\n", argv[skip_args], errstring); |
402 | exit (1); | |
403 | } | |
404 | dup (0); | |
405 | if (! isatty (0)) | |
406 | { | |
407 | fprintf (stderr, "emacs: %s: not a tty\n", argv[skip_args]); | |
408 | exit (1); | |
409 | } | |
410 | fprintf (stderr, "Using %s\n", argv[skip_args]); | |
411 | #ifdef HAVE_X_WINDOWS | |
412 | inhibit_window_system = 1; /* -t => -nw */ | |
413 | #endif | |
414 | } | |
415 | ||
416 | if (skip_args + 1 < argc | |
417 | && (!strcmp (argv[skip_args + 1], "-nw"))) | |
418 | { | |
419 | skip_args += 1; | |
420 | inhibit_window_system = 1; | |
421 | } | |
422 | ||
423 | /* Handle the -batch switch, which means don't do interactive display. */ | |
424 | noninteractive = 0; | |
425 | if (skip_args + 1 < argc && !strcmp (argv[skip_args + 1], "-batch")) | |
426 | { | |
427 | skip_args += 1; | |
428 | noninteractive = 1; | |
429 | } | |
430 | ||
fb8e9847 JB |
431 | #ifdef POSIX_SIGNALS |
432 | init_signals (); | |
433 | #endif | |
434 | ||
f927c5ae JB |
435 | if ( |
436 | #ifndef CANNOT_DUMP | |
437 | ! noninteractive || initialized | |
438 | #else | |
439 | 1 | |
440 | #endif | |
441 | ) | |
442 | { | |
443 | /* Don't catch these signals in batch mode if not initialized. | |
444 | On some machines, this sets static data that would make | |
445 | signal fail to work right when the dumped Emacs is run. */ | |
446 | signal (SIGHUP, fatal_error_signal); | |
447 | signal (SIGQUIT, fatal_error_signal); | |
448 | signal (SIGILL, fatal_error_signal); | |
449 | signal (SIGTRAP, fatal_error_signal); | |
a90538cb JB |
450 | #ifdef SIGIOT |
451 | /* This is missing on some systems - OS/2, for example. */ | |
f927c5ae | 452 | signal (SIGIOT, fatal_error_signal); |
a90538cb | 453 | #endif |
f927c5ae JB |
454 | #ifdef SIGEMT |
455 | signal (SIGEMT, fatal_error_signal); | |
456 | #endif | |
457 | signal (SIGFPE, fatal_error_signal); | |
00eaaa32 | 458 | #ifdef SIGBUS |
f927c5ae | 459 | signal (SIGBUS, fatal_error_signal); |
00eaaa32 | 460 | #endif |
f927c5ae | 461 | signal (SIGSEGV, fatal_error_signal); |
00eaaa32 | 462 | #ifdef SIGSYS |
f927c5ae | 463 | signal (SIGSYS, fatal_error_signal); |
00eaaa32 | 464 | #endif |
f927c5ae JB |
465 | signal (SIGTERM, fatal_error_signal); |
466 | #ifdef SIGXCPU | |
467 | signal (SIGXCPU, fatal_error_signal); | |
468 | #endif | |
469 | #ifdef SIGXFSZ | |
470 | signal (SIGXFSZ, fatal_error_signal); | |
471 | #endif /* SIGXFSZ */ | |
472 | ||
271c7b7c RS |
473 | #ifdef SIGDANGER |
474 | /* This just means available memory is getting low. */ | |
475 | signal (SIGDANGER, memory_warning_signal); | |
476 | #endif | |
477 | ||
f927c5ae | 478 | #ifdef AIX |
f927c5ae JB |
479 | signal (20, fatal_error_signal); |
480 | signal (21, fatal_error_signal); | |
481 | signal (22, fatal_error_signal); | |
f927c5ae | 482 | signal (24, fatal_error_signal); |
86fb06ae RS |
483 | #if 0 /* mvn@library.ucla.edu says these are SIGIO on AIX 3.2.4. */ |
484 | signal (23, fatal_error_signal); | |
bfb61299 | 485 | #ifdef SIGIO |
f927c5ae JB |
486 | signal (SIGAIO, fatal_error_signal); |
487 | signal (SIGPTY, fatal_error_signal); | |
bfb61299 | 488 | #endif |
86fb06ae | 489 | #endif |
0aef8561 | 490 | #ifndef _I386 |
f927c5ae | 491 | signal (SIGIOINT, fatal_error_signal); |
0aef8561 | 492 | #endif |
f927c5ae JB |
493 | signal (SIGGRANT, fatal_error_signal); |
494 | signal (SIGRETRACT, fatal_error_signal); | |
495 | signal (SIGSOUND, fatal_error_signal); | |
496 | signal (SIGMSG, fatal_error_signal); | |
497 | #endif /* AIX */ | |
498 | } | |
499 | ||
500 | noninteractive1 = noninteractive; | |
501 | ||
502 | /* Perform basic initializations (not merely interning symbols) */ | |
503 | ||
504 | if (!initialized) | |
505 | { | |
506 | init_alloc_once (); | |
507 | init_obarray (); | |
508 | init_eval_once (); | |
509 | init_syntax_once (); /* Create standard syntax table. */ | |
510 | /* Must be done before init_buffer */ | |
511 | init_casetab_once (); | |
512 | init_buffer_once (); /* Create buffer table and some buffers */ | |
513 | init_minibuf_once (); /* Create list of minibuffers */ | |
514 | /* Must precede init_window_once */ | |
515 | init_window_once (); /* Init the window system */ | |
516 | } | |
517 | ||
518 | init_alloc (); | |
f927c5ae JB |
519 | init_eval (); |
520 | init_data (); | |
0e956009 | 521 | |
29b89fe0 RS |
522 | #ifdef MSDOS |
523 | /* Call early 'cause init_environment needs it. */ | |
524 | init_dosfns (); | |
525 | /* Set defaults for several environment variables. */ | |
526 | if (initialized) init_environment (argc, argv, skip_args); | |
527 | #endif | |
528 | ||
0e956009 JB |
529 | /* egetenv is a pretty low-level facility, which may get called in |
530 | many circumstances; it seems flimsy to put off initializing it | |
531 | until calling init_callproc. */ | |
532 | set_process_environment (); | |
93aed04d RS |
533 | /* AIX crashes are reported in system versions 3.2.3 and 3.2.4 |
534 | if this is not done. Do it after set_process_environment so that we | |
535 | don't pollute Vprocess_environment. */ | |
536 | #ifdef AIX | |
537 | putenv ("LANG=C"); | |
538 | #endif | |
0e956009 | 539 | |
ace40a69 RS |
540 | init_buffer (); /* Init default directory of main buffer */ |
541 | ||
7928f0b5 | 542 | init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */ |
ace40a69 | 543 | init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */ |
7928f0b5 | 544 | init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */ |
fb8e9847 | 545 | init_lread (); |
f927c5ae | 546 | |
f927c5ae JB |
547 | if (!noninteractive) |
548 | { | |
549 | #ifdef VMS | |
1cbd5d9d | 550 | init_vms_input ();/* init_display calls get_frame_size, that needs this */ |
f927c5ae JB |
551 | #endif /* VMS */ |
552 | init_display (); /* Determine terminal type. init_sys_modes uses results */ | |
553 | } | |
554 | init_keyboard (); /* This too must precede init_sys_modes */ | |
f927c5ae JB |
555 | #ifdef VMS |
556 | init_vmsproc (); /* And this too. */ | |
557 | #endif /* VMS */ | |
558 | init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */ | |
559 | init_xdisp (); | |
560 | init_macros (); | |
561 | init_editfns (); | |
562 | #ifdef LISP_FLOAT_TYPE | |
563 | init_floatfns (); | |
564 | #endif | |
565 | #ifdef VMS | |
566 | init_vmsfns (); | |
567 | #endif /* VMS */ | |
f927c5ae | 568 | init_process (); |
32676c08 JB |
569 | #ifdef CLASH_DETECTION |
570 | init_filelock (); | |
571 | #endif /* CLASH_DETECTION */ | |
f927c5ae JB |
572 | |
573 | /* Intern the names of all standard functions and variables; define standard keys */ | |
574 | ||
575 | if (!initialized) | |
576 | { | |
577 | /* The basic levels of Lisp must come first */ | |
578 | /* And data must come first of all | |
579 | for the sake of symbols like error-message */ | |
580 | syms_of_data (); | |
581 | syms_of_alloc (); | |
fb8e9847 | 582 | syms_of_lread (); |
f927c5ae JB |
583 | syms_of_print (); |
584 | syms_of_eval (); | |
585 | syms_of_fns (); | |
f927c5ae | 586 | syms_of_floatfns (); |
f927c5ae JB |
587 | |
588 | syms_of_abbrev (); | |
589 | syms_of_buffer (); | |
590 | syms_of_bytecode (); | |
591 | syms_of_callint (); | |
592 | syms_of_casefiddle (); | |
593 | syms_of_casetab (); | |
594 | syms_of_callproc (); | |
595 | syms_of_cmds (); | |
596 | #ifndef NO_DIR_LIBRARY | |
597 | syms_of_dired (); | |
598 | #endif /* not NO_DIR_LIBRARY */ | |
599 | syms_of_display (); | |
600 | syms_of_doc (); | |
601 | syms_of_editfns (); | |
602 | syms_of_emacs (); | |
603 | syms_of_fileio (); | |
604 | #ifdef CLASH_DETECTION | |
605 | syms_of_filelock (); | |
606 | #endif /* CLASH_DETECTION */ | |
607 | syms_of_indent (); | |
608 | syms_of_keyboard (); | |
609 | syms_of_keymap (); | |
610 | syms_of_macros (); | |
611 | syms_of_marker (); | |
612 | syms_of_minibuf (); | |
613 | syms_of_mocklisp (); | |
f927c5ae | 614 | syms_of_process (); |
f927c5ae | 615 | syms_of_search (); |
1cbd5d9d | 616 | syms_of_frame (); |
f927c5ae JB |
617 | syms_of_syntax (); |
618 | syms_of_undo (); | |
bef79ee4 JA |
619 | |
620 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
621 | syms_of_textprop (); | |
f927c5ae JB |
622 | #ifdef VMS |
623 | syms_of_vmsproc (); | |
624 | #endif /* VMS */ | |
625 | syms_of_window (); | |
626 | syms_of_xdisp (); | |
627 | #ifdef HAVE_X_WINDOWS | |
72412588 | 628 | syms_of_xterm (); |
f927c5ae | 629 | syms_of_xfns (); |
9c3f23b7 | 630 | syms_of_xfaces (); |
72412588 JB |
631 | #ifdef HAVE_X11 |
632 | syms_of_xselect (); | |
633 | #endif | |
dbc4e1c1 | 634 | #ifdef HAVE_X_MENU |
f927c5ae JB |
635 | syms_of_xmenu (); |
636 | #endif /* HAVE_X_MENU */ | |
637 | #endif /* HAVE_X_WINDOWS */ | |
638 | ||
639 | #ifdef SYMS_SYSTEM | |
640 | SYMS_SYSTEM; | |
641 | #endif | |
642 | ||
643 | #ifdef SYMS_MACHINE | |
644 | SYMS_MACHINE; | |
645 | #endif | |
646 | ||
647 | keys_of_casefiddle (); | |
648 | keys_of_cmds (); | |
649 | keys_of_buffer (); | |
650 | keys_of_keyboard (); | |
651 | keys_of_keymap (); | |
652 | keys_of_macros (); | |
653 | keys_of_minibuf (); | |
654 | keys_of_window (); | |
5e67fbc2 | 655 | keys_of_frame (); |
f927c5ae JB |
656 | } |
657 | ||
658 | if (!initialized) | |
659 | { | |
660 | /* Handle -l loadup-and-dump, args passed by Makefile. */ | |
661 | if (argc > 2 + skip_args && !strcmp (argv[1 + skip_args], "-l")) | |
662 | Vtop_level = Fcons (intern ("load"), | |
663 | Fcons (build_string (argv[2 + skip_args]), Qnil)); | |
664 | #ifdef CANNOT_DUMP | |
665 | /* Unless next switch is -nl, load "loadup.el" first thing. */ | |
666 | if (!(argc > 1 + skip_args && !strcmp (argv[1 + skip_args], "-nl"))) | |
667 | Vtop_level = Fcons (intern ("load"), | |
668 | Fcons (build_string ("loadup.el"), Qnil)); | |
669 | #endif /* CANNOT_DUMP */ | |
670 | } | |
671 | ||
672 | initialized = 1; | |
673 | ||
afe9fae9 RS |
674 | #if defined (sun) || defined (LOCALTIME_CACHE) |
675 | /* sun's localtime has a bug. it caches the value of the time | |
279cc2b8 JB |
676 | zone rather than looking it up every time. Since localtime() is |
677 | called to bolt the undumping time into the undumped emacs, this | |
afe9fae9 RS |
678 | results in localtime ignoring the TZ environment variable. |
679 | This flushes the new TZ value into localtime. */ | |
680 | tzset (); | |
681 | #endif /* defined (sun) || defined (LOCALTIME_CACHE) */ | |
279cc2b8 | 682 | |
f927c5ae JB |
683 | /* Enter editor command loop. This never returns. */ |
684 | Frecursive_edit (); | |
685 | /* NOTREACHED */ | |
686 | } | |
687 | \f | |
688 | DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P", | |
edc8ae07 | 689 | "Exit the Emacs job and kill it.\n\ |
f927c5ae JB |
690 | If ARG is an integer, return ARG as the exit program code.\n\ |
691 | If ARG is a string, stuff it as keyboard input.\n\n\ | |
692 | The value of `kill-emacs-hook', if not void,\n\ | |
693 | is a list of functions (of no args),\n\ | |
694 | all of which are called before Emacs is actually killed.") | |
695 | (arg) | |
696 | Lisp_Object arg; | |
697 | { | |
698 | Lisp_Object hook, hook1; | |
699 | int i; | |
700 | struct gcpro gcpro1; | |
701 | ||
702 | GCPRO1 (arg); | |
703 | ||
704 | if (feof (stdin)) | |
705 | arg = Qt; | |
706 | ||
2447c626 | 707 | if (!NILP (Vrun_hooks) && !noninteractive) |
f927c5ae JB |
708 | call1 (Vrun_hooks, intern ("kill-emacs-hook")); |
709 | ||
f927c5ae JB |
710 | UNGCPRO; |
711 | ||
712 | /* Is it really necessary to do this deassign | |
713 | when we are going to exit anyway? */ | |
714 | /* #ifdef VMS | |
715 | stop_vms_input (); | |
716 | #endif */ | |
40be253a | 717 | |
d0068e25 | 718 | shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil); |
40be253a | 719 | |
f927c5ae JB |
720 | exit ((XTYPE (arg) == Lisp_Int) ? XINT (arg) |
721 | #ifdef VMS | |
722 | : 1 | |
723 | #else | |
724 | : 0 | |
725 | #endif | |
726 | ); | |
727 | /* NOTREACHED */ | |
728 | } | |
40be253a JB |
729 | |
730 | ||
731 | /* Perform an orderly shutdown of Emacs. Autosave any modified | |
732 | buffers, kill any child processes, clean up the terminal modes (if | |
733 | we're in the foreground), and other stuff like that. Don't perform | |
734 | any redisplay; this may be called when Emacs is shutting down in | |
735 | the background, or after its X connection has died. | |
736 | ||
737 | If SIG is a signal number, print a message for it. | |
738 | ||
739 | This is called by fatal signal handlers, X protocol error handlers, | |
740 | and Fkill_emacs. */ | |
f7ab4e3d | 741 | |
40be253a | 742 | void |
f7ab4e3d | 743 | shut_down_emacs (sig, no_x, stuff) |
41423a80 | 744 | int sig, no_x; |
f7ab4e3d | 745 | Lisp_Object stuff; |
40be253a JB |
746 | { |
747 | /* If we are controlling the terminal, reset terminal modes */ | |
748 | #ifdef EMACS_HAVE_TTY_PGRP | |
749 | { | |
d04d81d2 RS |
750 | int pgrp = EMACS_GETPGRP (0); |
751 | ||
40be253a JB |
752 | int tpgrp; |
753 | if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1 | |
5a570e37 | 754 | && tpgrp == pgrp) |
40be253a JB |
755 | { |
756 | fflush (stdout); | |
757 | reset_sys_modes (); | |
758 | if (sig && sig != SIGTERM) | |
759 | fprintf (stderr, "Fatal error (%d).", sig); | |
760 | } | |
761 | } | |
762 | #else | |
763 | fflush (stdout); | |
764 | reset_sys_modes (); | |
765 | #endif | |
766 | ||
f7ab4e3d RS |
767 | stuff_buffered_input (stuff); |
768 | ||
40be253a JB |
769 | kill_buffer_processes (Qnil); |
770 | Fdo_auto_save (Qt, Qnil); | |
771 | ||
772 | #ifdef CLASH_DETECTION | |
773 | unlock_all_files (); | |
774 | #endif | |
775 | ||
776 | #ifdef VMS | |
777 | kill_vms_processes (); | |
778 | #endif | |
779 | ||
41423a80 RS |
780 | #ifdef HAVE_X_WINDOWS |
781 | if (!noninteractive && EQ (Vwindow_system, intern ("x")) && ! no_x) | |
782 | Fx_close_current_connection (); | |
783 | #endif /* HAVE_X_WINDOWS */ | |
784 | ||
40be253a JB |
785 | #ifdef SIGIO |
786 | /* There is a tendency for a SIGIO signal to arrive within exit, | |
787 | and cause a SIGHUP because the input descriptor is already closed. */ | |
788 | unrequest_sigio (); | |
789 | signal (SIGIO, SIG_IGN); | |
790 | #endif | |
791 | } | |
792 | ||
793 | ||
f927c5ae JB |
794 | \f |
795 | #ifndef CANNOT_DUMP | |
796 | /* Nothing like this can be implemented on an Apollo. | |
797 | What a loss! */ | |
798 | ||
799 | #ifdef HAVE_SHM | |
800 | ||
801 | DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0, | |
802 | "Dump current state of Emacs into data file FILENAME.\n\ | |
803 | This function exists on systems that use HAVE_SHM.") | |
804 | (intoname) | |
805 | Lisp_Object intoname; | |
806 | { | |
807 | extern int my_edata; | |
808 | Lisp_Object tem; | |
809 | extern void malloc_warning (); | |
810 | ||
811 | CHECK_STRING (intoname, 0); | |
812 | intoname = Fexpand_file_name (intoname, Qnil); | |
813 | ||
814 | tem = Vpurify_flag; | |
815 | Vpurify_flag = Qnil; | |
816 | ||
817 | fflush (stdout); | |
818 | /* Tell malloc where start of impure now is */ | |
819 | /* Also arrange for warnings when nearly out of space. */ | |
820 | #ifndef SYSTEM_MALLOC | |
70eb2c3e | 821 | memory_warnings (&my_edata, malloc_warning); |
f927c5ae JB |
822 | #endif |
823 | map_out_data (XSTRING (intoname)->data); | |
824 | ||
825 | Vpurify_flag = tem; | |
826 | ||
827 | return Qnil; | |
828 | } | |
829 | ||
830 | #else /* not HAVE_SHM */ | |
831 | ||
832 | DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0, | |
833 | "Dump current state of Emacs into executable file FILENAME.\n\ | |
834 | Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\ | |
835 | This is used in the file `loadup.el' when building Emacs.\n\ | |
836 | \n\ | |
837 | Bind `command-line-processed' to nil before dumping,\n\ | |
838 | if you want the dumped Emacs to process its command line\n\ | |
839 | and announce itself normally when it is run.") | |
840 | (intoname, symname) | |
841 | Lisp_Object intoname, symname; | |
842 | { | |
843 | extern int my_edata; | |
844 | Lisp_Object tem; | |
845 | extern void malloc_warning (); | |
846 | ||
847 | CHECK_STRING (intoname, 0); | |
848 | intoname = Fexpand_file_name (intoname, Qnil); | |
2447c626 | 849 | if (!NILP (symname)) |
f927c5ae JB |
850 | { |
851 | CHECK_STRING (symname, 0); | |
852 | if (XSTRING (symname)->size) | |
853 | symname = Fexpand_file_name (symname, Qnil); | |
854 | } | |
855 | ||
856 | tem = Vpurify_flag; | |
857 | Vpurify_flag = Qnil; | |
858 | ||
859 | fflush (stdout); | |
860 | #ifdef VMS | |
861 | mapout_data (XSTRING (intoname)->data); | |
862 | #else | |
863 | /* Tell malloc where start of impure now is */ | |
864 | /* Also arrange for warnings when nearly out of space. */ | |
865 | #ifndef SYSTEM_MALLOC | |
70eb2c3e | 866 | memory_warnings (&my_edata, malloc_warning); |
f927c5ae JB |
867 | #endif |
868 | unexec (XSTRING (intoname)->data, | |
2447c626 | 869 | !NILP (symname) ? XSTRING (symname)->data : 0, &my_edata, 0, 0); |
f927c5ae JB |
870 | #endif /* not VMS */ |
871 | ||
872 | Vpurify_flag = tem; | |
873 | ||
874 | return Qnil; | |
875 | } | |
876 | ||
877 | #endif /* not HAVE_SHM */ | |
878 | ||
879 | #endif /* not CANNOT_DUMP */ | |
880 | \f | |
4b163808 | 881 | #ifndef SEPCHAR |
f927c5ae JB |
882 | #define SEPCHAR ':' |
883 | #endif | |
884 | ||
885 | Lisp_Object | |
886 | decode_env_path (evarname, defalt) | |
887 | char *evarname, *defalt; | |
888 | { | |
889 | register char *path, *p; | |
890 | extern char *index (); | |
891 | ||
892 | Lisp_Object lpath; | |
893 | ||
2447c626 JB |
894 | /* It's okay to use getenv here, because this function is only used |
895 | to initialize variables when Emacs starts up, and isn't called | |
896 | after that. */ | |
e065a56e JB |
897 | if (evarname != 0) |
898 | path = (char *) getenv (evarname); | |
899 | else | |
900 | path = 0; | |
f927c5ae JB |
901 | if (!path) |
902 | path = defalt; | |
903 | lpath = Qnil; | |
904 | while (1) | |
905 | { | |
906 | p = index (path, SEPCHAR); | |
907 | if (!p) p = path + strlen (path); | |
908 | lpath = Fcons (p - path ? make_string (path, p - path) : Qnil, | |
909 | lpath); | |
910 | if (*p) | |
911 | path = p + 1; | |
912 | else | |
913 | break; | |
914 | } | |
915 | return Fnreverse (lpath); | |
916 | } | |
917 | ||
918 | syms_of_emacs () | |
919 | { | |
83591e66 | 920 | #ifndef CANNOT_DUMP |
f927c5ae JB |
921 | #ifdef HAVE_SHM |
922 | defsubr (&Sdump_emacs_data); | |
923 | #else | |
924 | defsubr (&Sdump_emacs); | |
83591e66 | 925 | #endif |
f927c5ae JB |
926 | #endif |
927 | ||
928 | defsubr (&Skill_emacs); | |
929 | ||
59653951 | 930 | defsubr (&Sinvocation_name); |
ace40a69 | 931 | defsubr (&Sinvocation_directory); |
59653951 | 932 | |
f927c5ae JB |
933 | DEFVAR_LISP ("command-line-args", &Vcommand_line_args, |
934 | "Args passed by shell to Emacs, as a list of strings."); | |
935 | ||
936 | DEFVAR_LISP ("system-type", &Vsystem_type, | |
937 | "Value is symbol indicating type of operating system you are using."); | |
938 | Vsystem_type = intern (SYSTEM_TYPE); | |
939 | ||
271c7b7c RS |
940 | DEFVAR_LISP ("system-configuration", &Vsystem_configuration, |
941 | "Value is string indicating configuration Emacs was built for."); | |
942 | Vsystem_configuration = build_string (CONFIGURATION); | |
943 | ||
f927c5ae JB |
944 | DEFVAR_BOOL ("noninteractive", &noninteractive1, |
945 | "Non-nil means Emacs is running without interactive terminal."); | |
e5d77022 | 946 | |
e5d77022 | 947 | DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook, |
edc8ae07 JB |
948 | "Hook to be run whenever kill-emacs is called.\n\ |
949 | Since kill-emacs may be invoked when the terminal is disconnected (or\n\ | |
950 | in other similar situations), functions placed on this hook should not\n\ | |
679aee02 | 951 | expect to be able to interact with the user."); |
edc8ae07 | 952 | Vkill_emacs_hook = Qnil; |
3005da00 RS |
953 | |
954 | DEFVAR_INT ("emacs-priority", &emacs_priority, | |
955 | "Priority for Emacs to run at.\n\ | |
956 | This value is effective only if set before Emacs is dumped,\n\ | |
957 | and only if the Emacs executable is installed with setuid to permit\n\ | |
958 | it to change priority. (Emacs sets its uid back to the real uid.)"); | |
959 | emacs_priority = 0; | |
59653951 JB |
960 | |
961 | staticpro (&Vinvocation_name); | |
962 | Vinvocation_name = Qnil; | |
ace40a69 RS |
963 | staticpro (&Vinvocation_directory); |
964 | Vinvocation_directory = Qnil; | |
f927c5ae | 965 | } |