Commit | Line | Data |
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f927c5ae | 1 | /* Fully extensible Emacs, running on Unix, intended for GNU. |
40be253a | 2 | Copyright (C) 1985, 1986, 1987, 1992, 1993 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 | ||
24 | #include "config.h" | |
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 | ||
2447c626 JB |
38 | #ifdef HAVE_TERMIOS |
39 | #include <termios.h> | |
40 | #endif | |
41 | ||
f927c5ae JB |
42 | #ifdef APOLLO |
43 | #ifndef APOLLO_SR10 | |
44 | #include <default_acl.h> | |
45 | #endif | |
46 | #endif | |
47 | ||
f927c5ae JB |
48 | #include "lisp.h" |
49 | #include "commands.h" | |
bef79ee4 | 50 | #include "intervals.h" |
f927c5ae | 51 | |
edc8ae07 | 52 | #include "systty.h" |
8090eb09 | 53 | #include "syssignal.h" |
a41f8bed | 54 | |
f927c5ae JB |
55 | #ifndef O_RDWR |
56 | #define O_RDWR 2 | |
57 | #endif | |
58 | ||
59 | #define PRIO_PROCESS 0 | |
60 | ||
61 | /* Command line args from shell, as list of strings */ | |
62 | Lisp_Object Vcommand_line_args; | |
63 | ||
e5d77022 JB |
64 | /* Hook run by `kill-emacs' before it does really anything. */ |
65 | Lisp_Object Vkill_emacs_hook; | |
66 | ||
f927c5ae JB |
67 | /* Set nonzero after Emacs has started up the first time. |
68 | Prevents reinitialization of the Lisp world and keymaps | |
69 | on subsequent starts. */ | |
70 | int initialized; | |
71 | ||
72 | /* Variable whose value is symbol giving operating system type */ | |
73 | Lisp_Object Vsystem_type; | |
74 | ||
75 | /* If non-zero, emacs should not attempt to use an window-specific code, | |
76 | but instead should use the virtual terminal under which it was started */ | |
77 | int inhibit_window_system; | |
78 | ||
5aa7f46a JB |
79 | /* If nonzero, set Emacs to run at this priority. This is also used |
80 | in child_setup and sys_suspend to make sure subshells run at normal | |
81 | priority; Those functions have their own extern declaration. */ | |
3005da00 RS |
82 | int emacs_priority; |
83 | ||
f927c5ae JB |
84 | #ifdef HAVE_X_WINDOWS |
85 | /* If non-zero, -d was specified, meaning we're using some window system. */ | |
86 | int display_arg; | |
87 | #endif | |
88 | ||
89 | /* An address near the bottom of the stack. | |
90 | Tells GC how to save a copy of the stack. */ | |
91 | char *stack_bottom; | |
92 | ||
93 | #ifdef HAVE_X_WINDOWS | |
94 | extern Lisp_Object Vwindow_system; | |
95 | #endif /* HAVE_X_WINDOWS */ | |
96 | ||
97 | #ifdef USG_SHARED_LIBRARIES | |
98 | /* If nonzero, this is the place to put the end of the writable segment | |
99 | at startup. */ | |
100 | ||
101 | unsigned int bss_end = 0; | |
102 | #endif | |
103 | ||
104 | /* Nonzero means running Emacs without interactive terminal. */ | |
105 | ||
106 | int noninteractive; | |
107 | ||
108 | /* Value of Lisp variable `noninteractive'. | |
109 | Normally same as C variable `noninteractive' | |
110 | but nothing terrible happens if user sets this one. */ | |
111 | ||
112 | int noninteractive1; | |
113 | \f | |
114 | /* Signal code for the fatal signal that was received */ | |
115 | int fatal_error_code; | |
116 | ||
117 | /* Nonzero if handling a fatal error already */ | |
118 | int fatal_error_in_progress; | |
119 | ||
120 | /* Handle bus errors, illegal instruction, etc. */ | |
2447c626 | 121 | SIGTYPE |
f927c5ae JB |
122 | fatal_error_signal (sig) |
123 | int sig; | |
124 | { | |
f927c5ae JB |
125 | fatal_error_code = sig; |
126 | signal (sig, SIG_DFL); | |
127 | ||
128 | /* If fatal error occurs in code below, avoid infinite recursion. */ | |
8090eb09 JB |
129 | if (! fatal_error_in_progress) |
130 | { | |
131 | fatal_error_in_progress = 1; | |
f927c5ae | 132 | |
8090eb09 JB |
133 | shut_down_emacs (sig); |
134 | } | |
f927c5ae JB |
135 | |
136 | #ifdef VMS | |
f927c5ae JB |
137 | LIB$STOP (SS$_ABORT); |
138 | #else | |
8090eb09 JB |
139 | /* Signal the same code; this time it will really be fatal. |
140 | Remember that since we're in a signal handler, the signal we're | |
141 | going to send is probably blocked, so we have to unblock it if we | |
142 | want to really receive it. */ | |
a90538cb | 143 | sigunblock (sigmask (fatal_error_code)); |
f927c5ae JB |
144 | kill (getpid (), fatal_error_code); |
145 | #endif /* not VMS */ | |
146 | } | |
147 | \f | |
148 | /* Code for dealing with Lisp access to the Unix command line */ | |
149 | ||
150 | static | |
151 | init_cmdargs (argc, argv, skip_args) | |
152 | int argc; | |
153 | char **argv; | |
154 | int skip_args; | |
155 | { | |
156 | register int i; | |
157 | ||
158 | Vcommand_line_args = Qnil; | |
159 | ||
160 | for (i = argc - 1; i >= 0; i--) | |
161 | { | |
162 | if (i == 0 || i > skip_args) | |
163 | Vcommand_line_args | |
164 | = Fcons (build_string (argv[i]), Vcommand_line_args); | |
165 | } | |
166 | } | |
167 | \f | |
168 | #ifdef VMS | |
169 | #ifdef LINK_CRTL_SHARE | |
170 | #ifdef SHAREABLE_LIB_BUG | |
171 | extern noshare char **environ; | |
172 | #endif /* SHAREABLE_LIB_BUG */ | |
173 | #endif /* LINK_CRTL_SHARE */ | |
174 | #endif /* VMS */ | |
175 | ||
a90538cb | 176 | #ifndef ORDINARY_LINK |
efd241cc RS |
177 | /* We don't include crtbegin.o and crtend.o in the link, |
178 | so these functions and variables might be missed. | |
179 | Provide dummy definitions to avoid error. | |
180 | (We don't have any real constructors or destructors.) */ | |
181 | #ifdef __GNUC__ | |
c83a7064 | 182 | __do_global_ctors () |
efd241cc | 183 | {} |
c83a7064 RS |
184 | __do_global_ctors_aux () |
185 | {} | |
33143604 RS |
186 | __do_global_dtors () |
187 | {} | |
c83a7064 RS |
188 | char * __CTOR_LIST__[2] = { (char *) (-1), 0 }; |
189 | char * __DTOR_LIST__[2] = { (char *) (-1), 0 }; | |
190 | __main () | |
efd241cc | 191 | {} |
efd241cc | 192 | #endif /* __GNUC__ */ |
a90538cb | 193 | #endif /* ORDINARY_LINK */ |
efd241cc | 194 | |
f927c5ae JB |
195 | /* ARGSUSED */ |
196 | main (argc, argv, envp) | |
197 | int argc; | |
198 | char **argv; | |
199 | char **envp; | |
200 | { | |
201 | char stack_bottom_variable; | |
202 | int skip_args = 0; | |
203 | extern int errno; | |
204 | extern sys_nerr; | |
205 | extern char *sys_errlist[]; | |
206 | extern void malloc_warning (); | |
207 | ||
208 | /* Map in shared memory, if we are using that. */ | |
209 | #ifdef HAVE_SHM | |
210 | if (argc > 1 && !strcmp (argv[1], "-nl")) | |
211 | { | |
212 | map_in_data (0); | |
213 | /* The shared memory was just restored, which clobbered this. */ | |
214 | skip_args = 1; | |
215 | } | |
216 | else | |
217 | { | |
218 | map_in_data (1); | |
219 | /* The shared memory was just restored, which clobbered this. */ | |
220 | skip_args = 0; | |
221 | } | |
222 | #endif | |
223 | ||
19a36ec6 RS |
224 | #ifdef NeXT |
225 | static int malloc_cookie; | |
226 | ||
227 | /* This helps out unexnext.c. */ | |
228 | if (initialized) | |
229 | if (malloc_jumpstart (malloc_cookie) != 0) | |
230 | printf ("malloc jumpstart failed!\n"); | |
231 | #endif /* NeXT */ | |
232 | ||
f927c5ae | 233 | #ifdef HAVE_X_WINDOWS |
fb8e9847 JB |
234 | /* Stupid kludge to catch command-line display spec. We can't |
235 | handle this argument entirely in window system dependent code | |
236 | because we don't even know which window system dependent code | |
237 | to run until we've recognized this argument. */ | |
f927c5ae JB |
238 | { |
239 | int i; | |
240 | ||
241 | for (i = 1; (i < argc && ! display_arg); i++) | |
242 | if (!strcmp (argv[i], "-d")) | |
243 | display_arg = 1; | |
244 | } | |
245 | #endif | |
246 | ||
247 | #ifdef VMS | |
248 | /* If -map specified, map the data file in */ | |
249 | if (argc > 2 && ! strcmp (argv[1], "-map")) | |
250 | { | |
251 | skip_args = 2; | |
252 | mapin_data (argv[2]); | |
253 | } | |
254 | ||
255 | #ifdef LINK_CRTL_SHARE | |
256 | #ifdef SHAREABLE_LIB_BUG | |
257 | /* Bletcherous shared libraries! */ | |
258 | if (!stdin) | |
259 | stdin = fdopen (0, "r"); | |
260 | if (!stdout) | |
261 | stdout = fdopen (1, "w"); | |
262 | if (!stderr) | |
263 | stderr = fdopen (2, "w"); | |
264 | if (!environ) | |
265 | environ = envp; | |
266 | #endif /* SHAREABLE_LIB_BUG */ | |
267 | #endif /* LINK_CRTL_SHARE */ | |
268 | #endif /* VMS */ | |
269 | ||
270 | /* Record (approximately) where the stack begins. */ | |
271 | stack_bottom = &stack_bottom_variable; | |
272 | ||
273 | #ifdef RUN_TIME_REMAP | |
274 | if (initialized) | |
275 | run_time_remap (argv[0]); | |
276 | #endif | |
277 | ||
278 | #ifdef USG_SHARED_LIBRARIES | |
279 | if (bss_end) | |
280 | brk (bss_end); | |
281 | #endif | |
282 | ||
283 | clearerr (stdin); | |
284 | #ifdef BSD | |
285 | setpgrp (0, getpid ()); | |
286 | #endif | |
287 | ||
288 | #ifdef APOLLO | |
289 | #ifndef APOLLO_SR10 | |
290 | /* If USE_DOMAIN_ACLS environment variable exists, | |
291 | use ACLs rather than UNIX modes. */ | |
292 | if (egetenv ("USE_DOMAIN_ACLS")) | |
293 | default_acl (USE_DEFACL); | |
294 | #endif | |
295 | #endif /* APOLLO */ | |
296 | ||
297 | #ifndef SYSTEM_MALLOC | |
298 | if (! initialized) | |
70eb2c3e | 299 | memory_warnings (0, malloc_warning); |
f927c5ae JB |
300 | #endif /* not SYSTEM_MALLOC */ |
301 | ||
3005da00 RS |
302 | #ifdef PRIO_PROCESS |
303 | if (emacs_priority) | |
5aa7f46a | 304 | nice (emacs_priority); |
f927c5ae | 305 | setuid (getuid ()); |
3005da00 | 306 | #endif /* PRIO_PROCESS */ |
f927c5ae JB |
307 | |
308 | #ifdef BSD | |
309 | /* interrupt_input has trouble if we aren't in a separate process group. */ | |
310 | setpgrp (getpid (), getpid ()); | |
311 | #endif | |
312 | ||
313 | inhibit_window_system = 0; | |
314 | ||
4fc0b45b | 315 | /* Handle the -t switch, which specifies filename to use as terminal */ |
f927c5ae JB |
316 | if (skip_args + 2 < argc && !strcmp (argv[skip_args + 1], "-t")) |
317 | { | |
318 | int result; | |
319 | skip_args += 2; | |
320 | close (0); | |
321 | close (1); | |
322 | result = open (argv[skip_args], O_RDWR, 2 ); | |
323 | if (result < 0) | |
324 | { | |
325 | char *errstring; | |
326 | ||
327 | if (errno >= 0 && errno < sys_nerr) | |
328 | errstring = sys_errlist[errno]; | |
329 | else | |
330 | errstring = "undocumented error code"; | |
331 | fprintf (stderr, "emacs: %s: %s\n", argv[skip_args], errstring); | |
332 | exit (1); | |
333 | } | |
334 | dup (0); | |
335 | if (! isatty (0)) | |
336 | { | |
337 | fprintf (stderr, "emacs: %s: not a tty\n", argv[skip_args]); | |
338 | exit (1); | |
339 | } | |
340 | fprintf (stderr, "Using %s\n", argv[skip_args]); | |
341 | #ifdef HAVE_X_WINDOWS | |
342 | inhibit_window_system = 1; /* -t => -nw */ | |
343 | #endif | |
344 | } | |
345 | ||
346 | if (skip_args + 1 < argc | |
347 | && (!strcmp (argv[skip_args + 1], "-nw"))) | |
348 | { | |
349 | skip_args += 1; | |
350 | inhibit_window_system = 1; | |
351 | } | |
352 | ||
353 | /* Handle the -batch switch, which means don't do interactive display. */ | |
354 | noninteractive = 0; | |
355 | if (skip_args + 1 < argc && !strcmp (argv[skip_args + 1], "-batch")) | |
356 | { | |
357 | skip_args += 1; | |
358 | noninteractive = 1; | |
359 | } | |
360 | ||
fb8e9847 JB |
361 | #ifdef POSIX_SIGNALS |
362 | init_signals (); | |
363 | #endif | |
364 | ||
f927c5ae JB |
365 | if ( |
366 | #ifndef CANNOT_DUMP | |
367 | ! noninteractive || initialized | |
368 | #else | |
369 | 1 | |
370 | #endif | |
371 | ) | |
372 | { | |
373 | /* Don't catch these signals in batch mode if not initialized. | |
374 | On some machines, this sets static data that would make | |
375 | signal fail to work right when the dumped Emacs is run. */ | |
376 | signal (SIGHUP, fatal_error_signal); | |
377 | signal (SIGQUIT, fatal_error_signal); | |
378 | signal (SIGILL, fatal_error_signal); | |
379 | signal (SIGTRAP, fatal_error_signal); | |
a90538cb JB |
380 | #ifdef SIGIOT |
381 | /* This is missing on some systems - OS/2, for example. */ | |
f927c5ae | 382 | signal (SIGIOT, fatal_error_signal); |
a90538cb | 383 | #endif |
f927c5ae JB |
384 | #ifdef SIGEMT |
385 | signal (SIGEMT, fatal_error_signal); | |
386 | #endif | |
387 | signal (SIGFPE, fatal_error_signal); | |
388 | signal (SIGBUS, fatal_error_signal); | |
389 | signal (SIGSEGV, fatal_error_signal); | |
390 | signal (SIGSYS, fatal_error_signal); | |
391 | signal (SIGTERM, fatal_error_signal); | |
392 | #ifdef SIGXCPU | |
393 | signal (SIGXCPU, fatal_error_signal); | |
394 | #endif | |
395 | #ifdef SIGXFSZ | |
396 | signal (SIGXFSZ, fatal_error_signal); | |
397 | #endif /* SIGXFSZ */ | |
398 | ||
399 | #ifdef AIX | |
400 | signal (SIGDANGER, fatal_error_signal); | |
401 | signal (20, fatal_error_signal); | |
402 | signal (21, fatal_error_signal); | |
403 | signal (22, fatal_error_signal); | |
404 | signal (23, fatal_error_signal); | |
405 | signal (24, fatal_error_signal); | |
bfb61299 | 406 | #ifdef SIGIO |
f927c5ae JB |
407 | signal (SIGAIO, fatal_error_signal); |
408 | signal (SIGPTY, fatal_error_signal); | |
bfb61299 | 409 | #endif |
f927c5ae JB |
410 | signal (SIGIOINT, fatal_error_signal); |
411 | signal (SIGGRANT, fatal_error_signal); | |
412 | signal (SIGRETRACT, fatal_error_signal); | |
413 | signal (SIGSOUND, fatal_error_signal); | |
414 | signal (SIGMSG, fatal_error_signal); | |
415 | #endif /* AIX */ | |
416 | } | |
417 | ||
418 | noninteractive1 = noninteractive; | |
419 | ||
420 | /* Perform basic initializations (not merely interning symbols) */ | |
421 | ||
422 | if (!initialized) | |
423 | { | |
424 | init_alloc_once (); | |
425 | init_obarray (); | |
426 | init_eval_once (); | |
427 | init_syntax_once (); /* Create standard syntax table. */ | |
428 | /* Must be done before init_buffer */ | |
429 | init_casetab_once (); | |
430 | init_buffer_once (); /* Create buffer table and some buffers */ | |
431 | init_minibuf_once (); /* Create list of minibuffers */ | |
432 | /* Must precede init_window_once */ | |
433 | init_window_once (); /* Init the window system */ | |
434 | } | |
435 | ||
436 | init_alloc (); | |
f927c5ae JB |
437 | init_eval (); |
438 | init_data (); | |
0e956009 JB |
439 | |
440 | /* egetenv is a pretty low-level facility, which may get called in | |
441 | many circumstances; it seems flimsy to put off initializing it | |
442 | until calling init_callproc. */ | |
443 | set_process_environment (); | |
444 | ||
fb8e9847 | 445 | init_lread (); |
f927c5ae JB |
446 | |
447 | init_cmdargs (argc, argv, skip_args); /* Create list Vcommand_line_args */ | |
448 | init_buffer (); /* Init default directory of main buffer */ | |
449 | if (!noninteractive) | |
450 | { | |
451 | #ifdef VMS | |
1cbd5d9d | 452 | init_vms_input ();/* init_display calls get_frame_size, that needs this */ |
f927c5ae JB |
453 | #endif /* VMS */ |
454 | init_display (); /* Determine terminal type. init_sys_modes uses results */ | |
455 | } | |
456 | init_keyboard (); /* This too must precede init_sys_modes */ | |
457 | init_callproc (); /* And this too. */ | |
458 | #ifdef VMS | |
459 | init_vmsproc (); /* And this too. */ | |
460 | #endif /* VMS */ | |
461 | init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */ | |
462 | init_xdisp (); | |
463 | init_macros (); | |
464 | init_editfns (); | |
465 | #ifdef LISP_FLOAT_TYPE | |
466 | init_floatfns (); | |
467 | #endif | |
468 | #ifdef VMS | |
469 | init_vmsfns (); | |
470 | #endif /* VMS */ | |
f927c5ae | 471 | init_process (); |
32676c08 JB |
472 | #ifdef CLASH_DETECTION |
473 | init_filelock (); | |
474 | #endif /* CLASH_DETECTION */ | |
f927c5ae JB |
475 | |
476 | /* Intern the names of all standard functions and variables; define standard keys */ | |
477 | ||
478 | if (!initialized) | |
479 | { | |
480 | /* The basic levels of Lisp must come first */ | |
481 | /* And data must come first of all | |
482 | for the sake of symbols like error-message */ | |
483 | syms_of_data (); | |
484 | syms_of_alloc (); | |
fb8e9847 | 485 | syms_of_lread (); |
f927c5ae JB |
486 | syms_of_print (); |
487 | syms_of_eval (); | |
488 | syms_of_fns (); | |
489 | #ifdef LISP_FLOAT_TYPE | |
490 | syms_of_floatfns (); | |
491 | #endif | |
492 | ||
493 | syms_of_abbrev (); | |
494 | syms_of_buffer (); | |
495 | syms_of_bytecode (); | |
496 | syms_of_callint (); | |
497 | syms_of_casefiddle (); | |
498 | syms_of_casetab (); | |
499 | syms_of_callproc (); | |
500 | syms_of_cmds (); | |
501 | #ifndef NO_DIR_LIBRARY | |
502 | syms_of_dired (); | |
503 | #endif /* not NO_DIR_LIBRARY */ | |
504 | syms_of_display (); | |
505 | syms_of_doc (); | |
506 | syms_of_editfns (); | |
507 | syms_of_emacs (); | |
508 | syms_of_fileio (); | |
509 | #ifdef CLASH_DETECTION | |
510 | syms_of_filelock (); | |
511 | #endif /* CLASH_DETECTION */ | |
512 | syms_of_indent (); | |
513 | syms_of_keyboard (); | |
514 | syms_of_keymap (); | |
515 | syms_of_macros (); | |
516 | syms_of_marker (); | |
517 | syms_of_minibuf (); | |
518 | syms_of_mocklisp (); | |
f927c5ae | 519 | syms_of_process (); |
f927c5ae | 520 | syms_of_search (); |
1cbd5d9d | 521 | syms_of_frame (); |
f927c5ae JB |
522 | syms_of_syntax (); |
523 | syms_of_undo (); | |
bef79ee4 JA |
524 | |
525 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
526 | syms_of_textprop (); | |
f927c5ae JB |
527 | #ifdef VMS |
528 | syms_of_vmsproc (); | |
529 | #endif /* VMS */ | |
530 | syms_of_window (); | |
531 | syms_of_xdisp (); | |
532 | #ifdef HAVE_X_WINDOWS | |
72412588 | 533 | syms_of_xterm (); |
f927c5ae | 534 | syms_of_xfns (); |
72412588 JB |
535 | #ifdef HAVE_X11 |
536 | syms_of_xselect (); | |
537 | #endif | |
dbc4e1c1 | 538 | #ifdef HAVE_X_MENU |
f927c5ae JB |
539 | syms_of_xmenu (); |
540 | #endif /* HAVE_X_MENU */ | |
541 | #endif /* HAVE_X_WINDOWS */ | |
542 | ||
543 | #ifdef SYMS_SYSTEM | |
544 | SYMS_SYSTEM; | |
545 | #endif | |
546 | ||
547 | #ifdef SYMS_MACHINE | |
548 | SYMS_MACHINE; | |
549 | #endif | |
550 | ||
551 | keys_of_casefiddle (); | |
552 | keys_of_cmds (); | |
553 | keys_of_buffer (); | |
554 | keys_of_keyboard (); | |
555 | keys_of_keymap (); | |
556 | keys_of_macros (); | |
557 | keys_of_minibuf (); | |
558 | keys_of_window (); | |
5e67fbc2 | 559 | keys_of_frame (); |
f927c5ae JB |
560 | } |
561 | ||
562 | if (!initialized) | |
563 | { | |
564 | /* Handle -l loadup-and-dump, args passed by Makefile. */ | |
565 | if (argc > 2 + skip_args && !strcmp (argv[1 + skip_args], "-l")) | |
566 | Vtop_level = Fcons (intern ("load"), | |
567 | Fcons (build_string (argv[2 + skip_args]), Qnil)); | |
568 | #ifdef CANNOT_DUMP | |
569 | /* Unless next switch is -nl, load "loadup.el" first thing. */ | |
570 | if (!(argc > 1 + skip_args && !strcmp (argv[1 + skip_args], "-nl"))) | |
571 | Vtop_level = Fcons (intern ("load"), | |
572 | Fcons (build_string ("loadup.el"), Qnil)); | |
573 | #endif /* CANNOT_DUMP */ | |
574 | } | |
575 | ||
576 | initialized = 1; | |
577 | ||
279cc2b8 JB |
578 | #ifdef sun |
579 | /* sun's localtime() has a bug. it caches the value of the time | |
580 | zone rather than looking it up every time. Since localtime() is | |
581 | called to bolt the undumping time into the undumped emacs, this | |
582 | results in localtime() ignoring the TZ environment variable. | |
583 | This flushes the new TZ value into localtime(). */ | |
584 | tzset(); | |
585 | #endif /* sun */ | |
586 | ||
f927c5ae JB |
587 | /* Enter editor command loop. This never returns. */ |
588 | Frecursive_edit (); | |
589 | /* NOTREACHED */ | |
590 | } | |
591 | \f | |
592 | DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P", | |
edc8ae07 | 593 | "Exit the Emacs job and kill it.\n\ |
f927c5ae JB |
594 | If ARG is an integer, return ARG as the exit program code.\n\ |
595 | If ARG is a string, stuff it as keyboard input.\n\n\ | |
596 | The value of `kill-emacs-hook', if not void,\n\ | |
597 | is a list of functions (of no args),\n\ | |
598 | all of which are called before Emacs is actually killed.") | |
599 | (arg) | |
600 | Lisp_Object arg; | |
601 | { | |
602 | Lisp_Object hook, hook1; | |
603 | int i; | |
604 | struct gcpro gcpro1; | |
605 | ||
606 | GCPRO1 (arg); | |
607 | ||
608 | if (feof (stdin)) | |
609 | arg = Qt; | |
610 | ||
2447c626 | 611 | if (!NILP (Vrun_hooks) && !noninteractive) |
f927c5ae JB |
612 | call1 (Vrun_hooks, intern ("kill-emacs-hook")); |
613 | ||
f927c5ae JB |
614 | #ifdef HAVE_X_WINDOWS |
615 | if (!noninteractive && EQ (Vwindow_system, intern ("x"))) | |
616 | Fx_close_current_connection (); | |
617 | #endif /* HAVE_X_WINDOWS */ | |
618 | ||
619 | UNGCPRO; | |
620 | ||
621 | /* Is it really necessary to do this deassign | |
622 | when we are going to exit anyway? */ | |
623 | /* #ifdef VMS | |
624 | stop_vms_input (); | |
625 | #endif */ | |
626 | stuff_buffered_input (arg); | |
40be253a JB |
627 | |
628 | shut_down_emacs (0); | |
629 | ||
f927c5ae JB |
630 | exit ((XTYPE (arg) == Lisp_Int) ? XINT (arg) |
631 | #ifdef VMS | |
632 | : 1 | |
633 | #else | |
634 | : 0 | |
635 | #endif | |
636 | ); | |
637 | /* NOTREACHED */ | |
638 | } | |
40be253a JB |
639 | |
640 | ||
641 | /* Perform an orderly shutdown of Emacs. Autosave any modified | |
642 | buffers, kill any child processes, clean up the terminal modes (if | |
643 | we're in the foreground), and other stuff like that. Don't perform | |
644 | any redisplay; this may be called when Emacs is shutting down in | |
645 | the background, or after its X connection has died. | |
646 | ||
647 | If SIG is a signal number, print a message for it. | |
648 | ||
649 | This is called by fatal signal handlers, X protocol error handlers, | |
650 | and Fkill_emacs. */ | |
651 | void | |
652 | shut_down_emacs (sig) | |
653 | int sig; | |
654 | { | |
655 | /* If we are controlling the terminal, reset terminal modes */ | |
656 | #ifdef EMACS_HAVE_TTY_PGRP | |
657 | { | |
658 | int tpgrp; | |
659 | if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1 | |
660 | && tpgrp == getpgrp (0)) | |
661 | { | |
662 | fflush (stdout); | |
663 | reset_sys_modes (); | |
664 | if (sig && sig != SIGTERM) | |
665 | fprintf (stderr, "Fatal error (%d).", sig); | |
666 | } | |
667 | } | |
668 | #else | |
669 | fflush (stdout); | |
670 | reset_sys_modes (); | |
671 | #endif | |
672 | ||
673 | kill_buffer_processes (Qnil); | |
674 | Fdo_auto_save (Qt, Qnil); | |
675 | ||
676 | #ifdef CLASH_DETECTION | |
677 | unlock_all_files (); | |
678 | #endif | |
679 | ||
680 | #ifdef VMS | |
681 | kill_vms_processes (); | |
682 | #endif | |
683 | ||
684 | #ifdef SIGIO | |
685 | /* There is a tendency for a SIGIO signal to arrive within exit, | |
686 | and cause a SIGHUP because the input descriptor is already closed. */ | |
687 | unrequest_sigio (); | |
688 | signal (SIGIO, SIG_IGN); | |
689 | #endif | |
690 | } | |
691 | ||
692 | ||
f927c5ae JB |
693 | \f |
694 | #ifndef CANNOT_DUMP | |
695 | /* Nothing like this can be implemented on an Apollo. | |
696 | What a loss! */ | |
697 | ||
698 | #ifdef HAVE_SHM | |
699 | ||
700 | DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0, | |
701 | "Dump current state of Emacs into data file FILENAME.\n\ | |
702 | This function exists on systems that use HAVE_SHM.") | |
703 | (intoname) | |
704 | Lisp_Object intoname; | |
705 | { | |
706 | extern int my_edata; | |
707 | Lisp_Object tem; | |
708 | extern void malloc_warning (); | |
709 | ||
710 | CHECK_STRING (intoname, 0); | |
711 | intoname = Fexpand_file_name (intoname, Qnil); | |
712 | ||
713 | tem = Vpurify_flag; | |
714 | Vpurify_flag = Qnil; | |
715 | ||
716 | fflush (stdout); | |
717 | /* Tell malloc where start of impure now is */ | |
718 | /* Also arrange for warnings when nearly out of space. */ | |
719 | #ifndef SYSTEM_MALLOC | |
70eb2c3e | 720 | memory_warnings (&my_edata, malloc_warning); |
f927c5ae JB |
721 | #endif |
722 | map_out_data (XSTRING (intoname)->data); | |
723 | ||
724 | Vpurify_flag = tem; | |
725 | ||
726 | return Qnil; | |
727 | } | |
728 | ||
729 | #else /* not HAVE_SHM */ | |
730 | ||
731 | DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0, | |
732 | "Dump current state of Emacs into executable file FILENAME.\n\ | |
733 | Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\ | |
734 | This is used in the file `loadup.el' when building Emacs.\n\ | |
735 | \n\ | |
736 | Bind `command-line-processed' to nil before dumping,\n\ | |
737 | if you want the dumped Emacs to process its command line\n\ | |
738 | and announce itself normally when it is run.") | |
739 | (intoname, symname) | |
740 | Lisp_Object intoname, symname; | |
741 | { | |
742 | extern int my_edata; | |
743 | Lisp_Object tem; | |
744 | extern void malloc_warning (); | |
745 | ||
746 | CHECK_STRING (intoname, 0); | |
747 | intoname = Fexpand_file_name (intoname, Qnil); | |
2447c626 | 748 | if (!NILP (symname)) |
f927c5ae JB |
749 | { |
750 | CHECK_STRING (symname, 0); | |
751 | if (XSTRING (symname)->size) | |
752 | symname = Fexpand_file_name (symname, Qnil); | |
753 | } | |
754 | ||
755 | tem = Vpurify_flag; | |
756 | Vpurify_flag = Qnil; | |
757 | ||
758 | fflush (stdout); | |
759 | #ifdef VMS | |
760 | mapout_data (XSTRING (intoname)->data); | |
761 | #else | |
762 | /* Tell malloc where start of impure now is */ | |
763 | /* Also arrange for warnings when nearly out of space. */ | |
764 | #ifndef SYSTEM_MALLOC | |
70eb2c3e | 765 | memory_warnings (&my_edata, malloc_warning); |
f927c5ae JB |
766 | #endif |
767 | unexec (XSTRING (intoname)->data, | |
2447c626 | 768 | !NILP (symname) ? XSTRING (symname)->data : 0, &my_edata, 0, 0); |
f927c5ae JB |
769 | #endif /* not VMS */ |
770 | ||
771 | Vpurify_flag = tem; | |
772 | ||
773 | return Qnil; | |
774 | } | |
775 | ||
776 | #endif /* not HAVE_SHM */ | |
777 | ||
778 | #endif /* not CANNOT_DUMP */ | |
779 | \f | |
780 | #ifdef VMS | |
781 | #define SEPCHAR ',' | |
782 | #else | |
783 | #define SEPCHAR ':' | |
784 | #endif | |
785 | ||
786 | Lisp_Object | |
787 | decode_env_path (evarname, defalt) | |
788 | char *evarname, *defalt; | |
789 | { | |
790 | register char *path, *p; | |
791 | extern char *index (); | |
792 | ||
793 | Lisp_Object lpath; | |
794 | ||
2447c626 JB |
795 | /* It's okay to use getenv here, because this function is only used |
796 | to initialize variables when Emacs starts up, and isn't called | |
797 | after that. */ | |
e065a56e JB |
798 | if (evarname != 0) |
799 | path = (char *) getenv (evarname); | |
800 | else | |
801 | path = 0; | |
f927c5ae JB |
802 | if (!path) |
803 | path = defalt; | |
804 | lpath = Qnil; | |
805 | while (1) | |
806 | { | |
807 | p = index (path, SEPCHAR); | |
808 | if (!p) p = path + strlen (path); | |
809 | lpath = Fcons (p - path ? make_string (path, p - path) : Qnil, | |
810 | lpath); | |
811 | if (*p) | |
812 | path = p + 1; | |
813 | else | |
814 | break; | |
815 | } | |
816 | return Fnreverse (lpath); | |
817 | } | |
818 | ||
819 | syms_of_emacs () | |
820 | { | |
821 | #ifdef HAVE_SHM | |
822 | defsubr (&Sdump_emacs_data); | |
823 | #else | |
824 | defsubr (&Sdump_emacs); | |
825 | #endif | |
826 | ||
827 | defsubr (&Skill_emacs); | |
828 | ||
829 | DEFVAR_LISP ("command-line-args", &Vcommand_line_args, | |
830 | "Args passed by shell to Emacs, as a list of strings."); | |
831 | ||
832 | DEFVAR_LISP ("system-type", &Vsystem_type, | |
833 | "Value is symbol indicating type of operating system you are using."); | |
834 | Vsystem_type = intern (SYSTEM_TYPE); | |
835 | ||
836 | DEFVAR_BOOL ("noninteractive", &noninteractive1, | |
837 | "Non-nil means Emacs is running without interactive terminal."); | |
e5d77022 | 838 | |
e5d77022 | 839 | DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook, |
edc8ae07 JB |
840 | "Hook to be run whenever kill-emacs is called.\n\ |
841 | Since kill-emacs may be invoked when the terminal is disconnected (or\n\ | |
842 | in other similar situations), functions placed on this hook should not\n\ | |
843 | not expect to be able to interact with the user."); | |
844 | Vkill_emacs_hook = Qnil; | |
3005da00 RS |
845 | |
846 | DEFVAR_INT ("emacs-priority", &emacs_priority, | |
847 | "Priority for Emacs to run at.\n\ | |
848 | This value is effective only if set before Emacs is dumped,\n\ | |
849 | and only if the Emacs executable is installed with setuid to permit\n\ | |
850 | it to change priority. (Emacs sets its uid back to the real uid.)"); | |
851 | emacs_priority = 0; | |
f927c5ae | 852 | } |