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" |
a41f8bed | 53 | |
f927c5ae JB |
54 | #ifndef O_RDWR |
55 | #define O_RDWR 2 | |
56 | #endif | |
57 | ||
58 | #define PRIO_PROCESS 0 | |
59 | ||
60 | /* Command line args from shell, as list of strings */ | |
61 | Lisp_Object Vcommand_line_args; | |
62 | ||
e5d77022 JB |
63 | /* Hook run by `kill-emacs' before it does really anything. */ |
64 | Lisp_Object Vkill_emacs_hook; | |
65 | ||
f927c5ae JB |
66 | /* Set nonzero after Emacs has started up the first time. |
67 | Prevents reinitialization of the Lisp world and keymaps | |
68 | on subsequent starts. */ | |
69 | int initialized; | |
70 | ||
71 | /* Variable whose value is symbol giving operating system type */ | |
72 | Lisp_Object Vsystem_type; | |
73 | ||
74 | /* If non-zero, emacs should not attempt to use an window-specific code, | |
75 | but instead should use the virtual terminal under which it was started */ | |
76 | int inhibit_window_system; | |
77 | ||
5aa7f46a JB |
78 | /* If nonzero, set Emacs to run at this priority. This is also used |
79 | in child_setup and sys_suspend to make sure subshells run at normal | |
80 | priority; Those functions have their own extern declaration. */ | |
3005da00 RS |
81 | int emacs_priority; |
82 | ||
f927c5ae JB |
83 | #ifdef HAVE_X_WINDOWS |
84 | /* If non-zero, -d was specified, meaning we're using some window system. */ | |
85 | int display_arg; | |
86 | #endif | |
87 | ||
88 | /* An address near the bottom of the stack. | |
89 | Tells GC how to save a copy of the stack. */ | |
90 | char *stack_bottom; | |
91 | ||
92 | #ifdef HAVE_X_WINDOWS | |
93 | extern Lisp_Object Vwindow_system; | |
94 | #endif /* HAVE_X_WINDOWS */ | |
95 | ||
96 | #ifdef USG_SHARED_LIBRARIES | |
97 | /* If nonzero, this is the place to put the end of the writable segment | |
98 | at startup. */ | |
99 | ||
100 | unsigned int bss_end = 0; | |
101 | #endif | |
102 | ||
103 | /* Nonzero means running Emacs without interactive terminal. */ | |
104 | ||
105 | int noninteractive; | |
106 | ||
107 | /* Value of Lisp variable `noninteractive'. | |
108 | Normally same as C variable `noninteractive' | |
109 | but nothing terrible happens if user sets this one. */ | |
110 | ||
111 | int noninteractive1; | |
112 | \f | |
113 | /* Signal code for the fatal signal that was received */ | |
114 | int fatal_error_code; | |
115 | ||
116 | /* Nonzero if handling a fatal error already */ | |
117 | int fatal_error_in_progress; | |
118 | ||
119 | /* Handle bus errors, illegal instruction, etc. */ | |
2447c626 | 120 | SIGTYPE |
f927c5ae JB |
121 | fatal_error_signal (sig) |
122 | int sig; | |
123 | { | |
f927c5ae JB |
124 | fatal_error_code = sig; |
125 | signal (sig, SIG_DFL); | |
126 | ||
127 | /* If fatal error occurs in code below, avoid infinite recursion. */ | |
128 | if (fatal_error_in_progress) | |
129 | kill (getpid (), fatal_error_code); | |
130 | ||
131 | fatal_error_in_progress = 1; | |
132 | ||
40be253a | 133 | shut_down_emacs (sig); |
f927c5ae JB |
134 | |
135 | #ifdef VMS | |
f927c5ae JB |
136 | LIB$STOP (SS$_ABORT); |
137 | #else | |
138 | /* Signal the same code; this time it will really be fatal. */ | |
139 | kill (getpid (), fatal_error_code); | |
140 | #endif /* not VMS */ | |
141 | } | |
142 | \f | |
143 | /* Code for dealing with Lisp access to the Unix command line */ | |
144 | ||
145 | static | |
146 | init_cmdargs (argc, argv, skip_args) | |
147 | int argc; | |
148 | char **argv; | |
149 | int skip_args; | |
150 | { | |
151 | register int i; | |
152 | ||
153 | Vcommand_line_args = Qnil; | |
154 | ||
155 | for (i = argc - 1; i >= 0; i--) | |
156 | { | |
157 | if (i == 0 || i > skip_args) | |
158 | Vcommand_line_args | |
159 | = Fcons (build_string (argv[i]), Vcommand_line_args); | |
160 | } | |
161 | } | |
162 | \f | |
163 | #ifdef VMS | |
164 | #ifdef LINK_CRTL_SHARE | |
165 | #ifdef SHAREABLE_LIB_BUG | |
166 | extern noshare char **environ; | |
167 | #endif /* SHAREABLE_LIB_BUG */ | |
168 | #endif /* LINK_CRTL_SHARE */ | |
169 | #endif /* VMS */ | |
170 | ||
efd241cc RS |
171 | /* We don't include crtbegin.o and crtend.o in the link, |
172 | so these functions and variables might be missed. | |
173 | Provide dummy definitions to avoid error. | |
174 | (We don't have any real constructors or destructors.) */ | |
175 | #ifdef __GNUC__ | |
c83a7064 | 176 | __do_global_ctors () |
efd241cc | 177 | {} |
c83a7064 RS |
178 | __do_global_ctors_aux () |
179 | {} | |
33143604 RS |
180 | __do_global_dtors () |
181 | {} | |
c83a7064 RS |
182 | char * __CTOR_LIST__[2] = { (char *) (-1), 0 }; |
183 | char * __DTOR_LIST__[2] = { (char *) (-1), 0 }; | |
184 | __main () | |
efd241cc | 185 | {} |
efd241cc RS |
186 | #endif /* __GNUC__ */ |
187 | ||
f927c5ae JB |
188 | /* ARGSUSED */ |
189 | main (argc, argv, envp) | |
190 | int argc; | |
191 | char **argv; | |
192 | char **envp; | |
193 | { | |
194 | char stack_bottom_variable; | |
195 | int skip_args = 0; | |
196 | extern int errno; | |
197 | extern sys_nerr; | |
198 | extern char *sys_errlist[]; | |
199 | extern void malloc_warning (); | |
200 | ||
201 | /* Map in shared memory, if we are using that. */ | |
202 | #ifdef HAVE_SHM | |
203 | if (argc > 1 && !strcmp (argv[1], "-nl")) | |
204 | { | |
205 | map_in_data (0); | |
206 | /* The shared memory was just restored, which clobbered this. */ | |
207 | skip_args = 1; | |
208 | } | |
209 | else | |
210 | { | |
211 | map_in_data (1); | |
212 | /* The shared memory was just restored, which clobbered this. */ | |
213 | skip_args = 0; | |
214 | } | |
215 | #endif | |
216 | ||
19a36ec6 RS |
217 | #ifdef NeXT |
218 | static int malloc_cookie; | |
219 | ||
220 | /* This helps out unexnext.c. */ | |
221 | if (initialized) | |
222 | if (malloc_jumpstart (malloc_cookie) != 0) | |
223 | printf ("malloc jumpstart failed!\n"); | |
224 | #endif /* NeXT */ | |
225 | ||
f927c5ae | 226 | #ifdef HAVE_X_WINDOWS |
fb8e9847 JB |
227 | /* Stupid kludge to catch command-line display spec. We can't |
228 | handle this argument entirely in window system dependent code | |
229 | because we don't even know which window system dependent code | |
230 | to run until we've recognized this argument. */ | |
f927c5ae JB |
231 | { |
232 | int i; | |
233 | ||
234 | for (i = 1; (i < argc && ! display_arg); i++) | |
235 | if (!strcmp (argv[i], "-d")) | |
236 | display_arg = 1; | |
237 | } | |
238 | #endif | |
239 | ||
240 | #ifdef VMS | |
241 | /* If -map specified, map the data file in */ | |
242 | if (argc > 2 && ! strcmp (argv[1], "-map")) | |
243 | { | |
244 | skip_args = 2; | |
245 | mapin_data (argv[2]); | |
246 | } | |
247 | ||
248 | #ifdef LINK_CRTL_SHARE | |
249 | #ifdef SHAREABLE_LIB_BUG | |
250 | /* Bletcherous shared libraries! */ | |
251 | if (!stdin) | |
252 | stdin = fdopen (0, "r"); | |
253 | if (!stdout) | |
254 | stdout = fdopen (1, "w"); | |
255 | if (!stderr) | |
256 | stderr = fdopen (2, "w"); | |
257 | if (!environ) | |
258 | environ = envp; | |
259 | #endif /* SHAREABLE_LIB_BUG */ | |
260 | #endif /* LINK_CRTL_SHARE */ | |
261 | #endif /* VMS */ | |
262 | ||
263 | /* Record (approximately) where the stack begins. */ | |
264 | stack_bottom = &stack_bottom_variable; | |
265 | ||
266 | #ifdef RUN_TIME_REMAP | |
267 | if (initialized) | |
268 | run_time_remap (argv[0]); | |
269 | #endif | |
270 | ||
271 | #ifdef USG_SHARED_LIBRARIES | |
272 | if (bss_end) | |
273 | brk (bss_end); | |
274 | #endif | |
275 | ||
276 | clearerr (stdin); | |
277 | #ifdef BSD | |
278 | setpgrp (0, getpid ()); | |
279 | #endif | |
280 | ||
281 | #ifdef APOLLO | |
282 | #ifndef APOLLO_SR10 | |
283 | /* If USE_DOMAIN_ACLS environment variable exists, | |
284 | use ACLs rather than UNIX modes. */ | |
285 | if (egetenv ("USE_DOMAIN_ACLS")) | |
286 | default_acl (USE_DEFACL); | |
287 | #endif | |
288 | #endif /* APOLLO */ | |
289 | ||
290 | #ifndef SYSTEM_MALLOC | |
291 | if (! initialized) | |
70eb2c3e | 292 | memory_warnings (0, malloc_warning); |
f927c5ae JB |
293 | #endif /* not SYSTEM_MALLOC */ |
294 | ||
3005da00 RS |
295 | #ifdef PRIO_PROCESS |
296 | if (emacs_priority) | |
5aa7f46a | 297 | nice (emacs_priority); |
f927c5ae | 298 | setuid (getuid ()); |
3005da00 | 299 | #endif /* PRIO_PROCESS */ |
f927c5ae JB |
300 | |
301 | #ifdef BSD | |
302 | /* interrupt_input has trouble if we aren't in a separate process group. */ | |
303 | setpgrp (getpid (), getpid ()); | |
304 | #endif | |
305 | ||
306 | inhibit_window_system = 0; | |
307 | ||
4fc0b45b | 308 | /* Handle the -t switch, which specifies filename to use as terminal */ |
f927c5ae JB |
309 | if (skip_args + 2 < argc && !strcmp (argv[skip_args + 1], "-t")) |
310 | { | |
311 | int result; | |
312 | skip_args += 2; | |
313 | close (0); | |
314 | close (1); | |
315 | result = open (argv[skip_args], O_RDWR, 2 ); | |
316 | if (result < 0) | |
317 | { | |
318 | char *errstring; | |
319 | ||
320 | if (errno >= 0 && errno < sys_nerr) | |
321 | errstring = sys_errlist[errno]; | |
322 | else | |
323 | errstring = "undocumented error code"; | |
324 | fprintf (stderr, "emacs: %s: %s\n", argv[skip_args], errstring); | |
325 | exit (1); | |
326 | } | |
327 | dup (0); | |
328 | if (! isatty (0)) | |
329 | { | |
330 | fprintf (stderr, "emacs: %s: not a tty\n", argv[skip_args]); | |
331 | exit (1); | |
332 | } | |
333 | fprintf (stderr, "Using %s\n", argv[skip_args]); | |
334 | #ifdef HAVE_X_WINDOWS | |
335 | inhibit_window_system = 1; /* -t => -nw */ | |
336 | #endif | |
337 | } | |
338 | ||
339 | if (skip_args + 1 < argc | |
340 | && (!strcmp (argv[skip_args + 1], "-nw"))) | |
341 | { | |
342 | skip_args += 1; | |
343 | inhibit_window_system = 1; | |
344 | } | |
345 | ||
346 | /* Handle the -batch switch, which means don't do interactive display. */ | |
347 | noninteractive = 0; | |
348 | if (skip_args + 1 < argc && !strcmp (argv[skip_args + 1], "-batch")) | |
349 | { | |
350 | skip_args += 1; | |
351 | noninteractive = 1; | |
352 | } | |
353 | ||
fb8e9847 JB |
354 | #ifdef POSIX_SIGNALS |
355 | init_signals (); | |
356 | #endif | |
357 | ||
f927c5ae JB |
358 | if ( |
359 | #ifndef CANNOT_DUMP | |
360 | ! noninteractive || initialized | |
361 | #else | |
362 | 1 | |
363 | #endif | |
364 | ) | |
365 | { | |
366 | /* Don't catch these signals in batch mode if not initialized. | |
367 | On some machines, this sets static data that would make | |
368 | signal fail to work right when the dumped Emacs is run. */ | |
369 | signal (SIGHUP, fatal_error_signal); | |
370 | signal (SIGQUIT, fatal_error_signal); | |
371 | signal (SIGILL, fatal_error_signal); | |
372 | signal (SIGTRAP, fatal_error_signal); | |
373 | signal (SIGIOT, fatal_error_signal); | |
374 | #ifdef SIGEMT | |
375 | signal (SIGEMT, fatal_error_signal); | |
376 | #endif | |
377 | signal (SIGFPE, fatal_error_signal); | |
378 | signal (SIGBUS, fatal_error_signal); | |
379 | signal (SIGSEGV, fatal_error_signal); | |
380 | signal (SIGSYS, fatal_error_signal); | |
381 | signal (SIGTERM, fatal_error_signal); | |
382 | #ifdef SIGXCPU | |
383 | signal (SIGXCPU, fatal_error_signal); | |
384 | #endif | |
385 | #ifdef SIGXFSZ | |
386 | signal (SIGXFSZ, fatal_error_signal); | |
387 | #endif /* SIGXFSZ */ | |
388 | ||
389 | #ifdef AIX | |
390 | signal (SIGDANGER, fatal_error_signal); | |
391 | signal (20, fatal_error_signal); | |
392 | signal (21, fatal_error_signal); | |
393 | signal (22, fatal_error_signal); | |
394 | signal (23, fatal_error_signal); | |
395 | signal (24, fatal_error_signal); | |
bfb61299 | 396 | #ifdef SIGIO |
f927c5ae JB |
397 | signal (SIGAIO, fatal_error_signal); |
398 | signal (SIGPTY, fatal_error_signal); | |
bfb61299 | 399 | #endif |
f927c5ae JB |
400 | signal (SIGIOINT, fatal_error_signal); |
401 | signal (SIGGRANT, fatal_error_signal); | |
402 | signal (SIGRETRACT, fatal_error_signal); | |
403 | signal (SIGSOUND, fatal_error_signal); | |
404 | signal (SIGMSG, fatal_error_signal); | |
405 | #endif /* AIX */ | |
406 | } | |
407 | ||
408 | noninteractive1 = noninteractive; | |
409 | ||
410 | /* Perform basic initializations (not merely interning symbols) */ | |
411 | ||
412 | if (!initialized) | |
413 | { | |
414 | init_alloc_once (); | |
415 | init_obarray (); | |
416 | init_eval_once (); | |
417 | init_syntax_once (); /* Create standard syntax table. */ | |
418 | /* Must be done before init_buffer */ | |
419 | init_casetab_once (); | |
420 | init_buffer_once (); /* Create buffer table and some buffers */ | |
421 | init_minibuf_once (); /* Create list of minibuffers */ | |
422 | /* Must precede init_window_once */ | |
423 | init_window_once (); /* Init the window system */ | |
424 | } | |
425 | ||
426 | init_alloc (); | |
f927c5ae JB |
427 | init_eval (); |
428 | init_data (); | |
fb8e9847 | 429 | init_lread (); |
f927c5ae JB |
430 | |
431 | init_cmdargs (argc, argv, skip_args); /* Create list Vcommand_line_args */ | |
432 | init_buffer (); /* Init default directory of main buffer */ | |
433 | if (!noninteractive) | |
434 | { | |
435 | #ifdef VMS | |
1cbd5d9d | 436 | init_vms_input ();/* init_display calls get_frame_size, that needs this */ |
f927c5ae JB |
437 | #endif /* VMS */ |
438 | init_display (); /* Determine terminal type. init_sys_modes uses results */ | |
439 | } | |
440 | init_keyboard (); /* This too must precede init_sys_modes */ | |
441 | init_callproc (); /* And this too. */ | |
442 | #ifdef VMS | |
443 | init_vmsproc (); /* And this too. */ | |
444 | #endif /* VMS */ | |
445 | init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */ | |
446 | init_xdisp (); | |
447 | init_macros (); | |
448 | init_editfns (); | |
449 | #ifdef LISP_FLOAT_TYPE | |
450 | init_floatfns (); | |
451 | #endif | |
452 | #ifdef VMS | |
453 | init_vmsfns (); | |
454 | #endif /* VMS */ | |
f927c5ae | 455 | init_process (); |
32676c08 JB |
456 | #ifdef CLASH_DETECTION |
457 | init_filelock (); | |
458 | #endif /* CLASH_DETECTION */ | |
f927c5ae JB |
459 | |
460 | /* Intern the names of all standard functions and variables; define standard keys */ | |
461 | ||
462 | if (!initialized) | |
463 | { | |
464 | /* The basic levels of Lisp must come first */ | |
465 | /* And data must come first of all | |
466 | for the sake of symbols like error-message */ | |
467 | syms_of_data (); | |
468 | syms_of_alloc (); | |
fb8e9847 | 469 | syms_of_lread (); |
f927c5ae JB |
470 | syms_of_print (); |
471 | syms_of_eval (); | |
472 | syms_of_fns (); | |
473 | #ifdef LISP_FLOAT_TYPE | |
474 | syms_of_floatfns (); | |
475 | #endif | |
476 | ||
477 | syms_of_abbrev (); | |
478 | syms_of_buffer (); | |
479 | syms_of_bytecode (); | |
480 | syms_of_callint (); | |
481 | syms_of_casefiddle (); | |
482 | syms_of_casetab (); | |
483 | syms_of_callproc (); | |
484 | syms_of_cmds (); | |
485 | #ifndef NO_DIR_LIBRARY | |
486 | syms_of_dired (); | |
487 | #endif /* not NO_DIR_LIBRARY */ | |
488 | syms_of_display (); | |
489 | syms_of_doc (); | |
490 | syms_of_editfns (); | |
491 | syms_of_emacs (); | |
492 | syms_of_fileio (); | |
493 | #ifdef CLASH_DETECTION | |
494 | syms_of_filelock (); | |
495 | #endif /* CLASH_DETECTION */ | |
496 | syms_of_indent (); | |
497 | syms_of_keyboard (); | |
498 | syms_of_keymap (); | |
499 | syms_of_macros (); | |
500 | syms_of_marker (); | |
501 | syms_of_minibuf (); | |
502 | syms_of_mocklisp (); | |
f927c5ae | 503 | syms_of_process (); |
f927c5ae | 504 | syms_of_search (); |
1cbd5d9d | 505 | syms_of_frame (); |
f927c5ae JB |
506 | syms_of_syntax (); |
507 | syms_of_undo (); | |
bef79ee4 JA |
508 | |
509 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
510 | syms_of_textprop (); | |
f927c5ae JB |
511 | #ifdef VMS |
512 | syms_of_vmsproc (); | |
513 | #endif /* VMS */ | |
514 | syms_of_window (); | |
515 | syms_of_xdisp (); | |
516 | #ifdef HAVE_X_WINDOWS | |
72412588 | 517 | syms_of_xterm (); |
f927c5ae | 518 | syms_of_xfns (); |
72412588 JB |
519 | #ifdef HAVE_X11 |
520 | syms_of_xselect (); | |
521 | #endif | |
55b0b319 | 522 | #ifdef HAVE_X_WINDOWS |
3005da00 | 523 | #ifndef NO_X_MENU |
f927c5ae | 524 | syms_of_xmenu (); |
3005da00 | 525 | #endif /* not NO_X_MENU */ |
f927c5ae JB |
526 | #endif /* HAVE_X_MENU */ |
527 | #endif /* HAVE_X_WINDOWS */ | |
528 | ||
529 | #ifdef SYMS_SYSTEM | |
530 | SYMS_SYSTEM; | |
531 | #endif | |
532 | ||
533 | #ifdef SYMS_MACHINE | |
534 | SYMS_MACHINE; | |
535 | #endif | |
536 | ||
537 | keys_of_casefiddle (); | |
538 | keys_of_cmds (); | |
539 | keys_of_buffer (); | |
540 | keys_of_keyboard (); | |
541 | keys_of_keymap (); | |
542 | keys_of_macros (); | |
543 | keys_of_minibuf (); | |
544 | keys_of_window (); | |
5e67fbc2 | 545 | keys_of_frame (); |
f927c5ae JB |
546 | } |
547 | ||
548 | if (!initialized) | |
549 | { | |
550 | /* Handle -l loadup-and-dump, args passed by Makefile. */ | |
551 | if (argc > 2 + skip_args && !strcmp (argv[1 + skip_args], "-l")) | |
552 | Vtop_level = Fcons (intern ("load"), | |
553 | Fcons (build_string (argv[2 + skip_args]), Qnil)); | |
554 | #ifdef CANNOT_DUMP | |
555 | /* Unless next switch is -nl, load "loadup.el" first thing. */ | |
556 | if (!(argc > 1 + skip_args && !strcmp (argv[1 + skip_args], "-nl"))) | |
557 | Vtop_level = Fcons (intern ("load"), | |
558 | Fcons (build_string ("loadup.el"), Qnil)); | |
559 | #endif /* CANNOT_DUMP */ | |
560 | } | |
561 | ||
562 | initialized = 1; | |
563 | ||
279cc2b8 JB |
564 | #ifdef sun |
565 | /* sun's localtime() has a bug. it caches the value of the time | |
566 | zone rather than looking it up every time. Since localtime() is | |
567 | called to bolt the undumping time into the undumped emacs, this | |
568 | results in localtime() ignoring the TZ environment variable. | |
569 | This flushes the new TZ value into localtime(). */ | |
570 | tzset(); | |
571 | #endif /* sun */ | |
572 | ||
f927c5ae JB |
573 | /* Enter editor command loop. This never returns. */ |
574 | Frecursive_edit (); | |
575 | /* NOTREACHED */ | |
576 | } | |
577 | \f | |
578 | DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P", | |
edc8ae07 | 579 | "Exit the Emacs job and kill it.\n\ |
f927c5ae JB |
580 | If ARG is an integer, return ARG as the exit program code.\n\ |
581 | If ARG is a string, stuff it as keyboard input.\n\n\ | |
582 | The value of `kill-emacs-hook', if not void,\n\ | |
583 | is a list of functions (of no args),\n\ | |
584 | all of which are called before Emacs is actually killed.") | |
585 | (arg) | |
586 | Lisp_Object arg; | |
587 | { | |
588 | Lisp_Object hook, hook1; | |
589 | int i; | |
590 | struct gcpro gcpro1; | |
591 | ||
592 | GCPRO1 (arg); | |
593 | ||
594 | if (feof (stdin)) | |
595 | arg = Qt; | |
596 | ||
2447c626 | 597 | if (!NILP (Vrun_hooks) && !noninteractive) |
f927c5ae JB |
598 | call1 (Vrun_hooks, intern ("kill-emacs-hook")); |
599 | ||
f927c5ae JB |
600 | #ifdef HAVE_X_WINDOWS |
601 | if (!noninteractive && EQ (Vwindow_system, intern ("x"))) | |
602 | Fx_close_current_connection (); | |
603 | #endif /* HAVE_X_WINDOWS */ | |
604 | ||
605 | UNGCPRO; | |
606 | ||
607 | /* Is it really necessary to do this deassign | |
608 | when we are going to exit anyway? */ | |
609 | /* #ifdef VMS | |
610 | stop_vms_input (); | |
611 | #endif */ | |
612 | stuff_buffered_input (arg); | |
40be253a JB |
613 | |
614 | shut_down_emacs (0); | |
615 | ||
f927c5ae JB |
616 | exit ((XTYPE (arg) == Lisp_Int) ? XINT (arg) |
617 | #ifdef VMS | |
618 | : 1 | |
619 | #else | |
620 | : 0 | |
621 | #endif | |
622 | ); | |
623 | /* NOTREACHED */ | |
624 | } | |
40be253a JB |
625 | |
626 | ||
627 | /* Perform an orderly shutdown of Emacs. Autosave any modified | |
628 | buffers, kill any child processes, clean up the terminal modes (if | |
629 | we're in the foreground), and other stuff like that. Don't perform | |
630 | any redisplay; this may be called when Emacs is shutting down in | |
631 | the background, or after its X connection has died. | |
632 | ||
633 | If SIG is a signal number, print a message for it. | |
634 | ||
635 | This is called by fatal signal handlers, X protocol error handlers, | |
636 | and Fkill_emacs. */ | |
637 | void | |
638 | shut_down_emacs (sig) | |
639 | int sig; | |
640 | { | |
641 | /* If we are controlling the terminal, reset terminal modes */ | |
642 | #ifdef EMACS_HAVE_TTY_PGRP | |
643 | { | |
644 | int tpgrp; | |
645 | if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1 | |
646 | && tpgrp == getpgrp (0)) | |
647 | { | |
648 | fflush (stdout); | |
649 | reset_sys_modes (); | |
650 | if (sig && sig != SIGTERM) | |
651 | fprintf (stderr, "Fatal error (%d).", sig); | |
652 | } | |
653 | } | |
654 | #else | |
655 | fflush (stdout); | |
656 | reset_sys_modes (); | |
657 | #endif | |
658 | ||
659 | kill_buffer_processes (Qnil); | |
660 | Fdo_auto_save (Qt, Qnil); | |
661 | ||
662 | #ifdef CLASH_DETECTION | |
663 | unlock_all_files (); | |
664 | #endif | |
665 | ||
666 | #ifdef VMS | |
667 | kill_vms_processes (); | |
668 | #endif | |
669 | ||
670 | #ifdef SIGIO | |
671 | /* There is a tendency for a SIGIO signal to arrive within exit, | |
672 | and cause a SIGHUP because the input descriptor is already closed. */ | |
673 | unrequest_sigio (); | |
674 | signal (SIGIO, SIG_IGN); | |
675 | #endif | |
676 | } | |
677 | ||
678 | ||
f927c5ae JB |
679 | \f |
680 | #ifndef CANNOT_DUMP | |
681 | /* Nothing like this can be implemented on an Apollo. | |
682 | What a loss! */ | |
683 | ||
684 | #ifdef HAVE_SHM | |
685 | ||
686 | DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0, | |
687 | "Dump current state of Emacs into data file FILENAME.\n\ | |
688 | This function exists on systems that use HAVE_SHM.") | |
689 | (intoname) | |
690 | Lisp_Object intoname; | |
691 | { | |
692 | extern int my_edata; | |
693 | Lisp_Object tem; | |
694 | extern void malloc_warning (); | |
695 | ||
696 | CHECK_STRING (intoname, 0); | |
697 | intoname = Fexpand_file_name (intoname, Qnil); | |
698 | ||
699 | tem = Vpurify_flag; | |
700 | Vpurify_flag = Qnil; | |
701 | ||
702 | fflush (stdout); | |
703 | /* Tell malloc where start of impure now is */ | |
704 | /* Also arrange for warnings when nearly out of space. */ | |
705 | #ifndef SYSTEM_MALLOC | |
70eb2c3e | 706 | memory_warnings (&my_edata, malloc_warning); |
f927c5ae JB |
707 | #endif |
708 | map_out_data (XSTRING (intoname)->data); | |
709 | ||
710 | Vpurify_flag = tem; | |
711 | ||
712 | return Qnil; | |
713 | } | |
714 | ||
715 | #else /* not HAVE_SHM */ | |
716 | ||
717 | DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0, | |
718 | "Dump current state of Emacs into executable file FILENAME.\n\ | |
719 | Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\ | |
720 | This is used in the file `loadup.el' when building Emacs.\n\ | |
721 | \n\ | |
722 | Bind `command-line-processed' to nil before dumping,\n\ | |
723 | if you want the dumped Emacs to process its command line\n\ | |
724 | and announce itself normally when it is run.") | |
725 | (intoname, symname) | |
726 | Lisp_Object intoname, symname; | |
727 | { | |
728 | extern int my_edata; | |
729 | Lisp_Object tem; | |
730 | extern void malloc_warning (); | |
731 | ||
732 | CHECK_STRING (intoname, 0); | |
733 | intoname = Fexpand_file_name (intoname, Qnil); | |
2447c626 | 734 | if (!NILP (symname)) |
f927c5ae JB |
735 | { |
736 | CHECK_STRING (symname, 0); | |
737 | if (XSTRING (symname)->size) | |
738 | symname = Fexpand_file_name (symname, Qnil); | |
739 | } | |
740 | ||
741 | tem = Vpurify_flag; | |
742 | Vpurify_flag = Qnil; | |
743 | ||
744 | fflush (stdout); | |
745 | #ifdef VMS | |
746 | mapout_data (XSTRING (intoname)->data); | |
747 | #else | |
748 | /* Tell malloc where start of impure now is */ | |
749 | /* Also arrange for warnings when nearly out of space. */ | |
750 | #ifndef SYSTEM_MALLOC | |
70eb2c3e | 751 | memory_warnings (&my_edata, malloc_warning); |
f927c5ae JB |
752 | #endif |
753 | unexec (XSTRING (intoname)->data, | |
2447c626 | 754 | !NILP (symname) ? XSTRING (symname)->data : 0, &my_edata, 0, 0); |
f927c5ae JB |
755 | #endif /* not VMS */ |
756 | ||
757 | Vpurify_flag = tem; | |
758 | ||
759 | return Qnil; | |
760 | } | |
761 | ||
762 | #endif /* not HAVE_SHM */ | |
763 | ||
764 | #endif /* not CANNOT_DUMP */ | |
765 | \f | |
766 | #ifdef VMS | |
767 | #define SEPCHAR ',' | |
768 | #else | |
769 | #define SEPCHAR ':' | |
770 | #endif | |
771 | ||
772 | Lisp_Object | |
773 | decode_env_path (evarname, defalt) | |
774 | char *evarname, *defalt; | |
775 | { | |
776 | register char *path, *p; | |
777 | extern char *index (); | |
778 | ||
779 | Lisp_Object lpath; | |
780 | ||
2447c626 JB |
781 | /* It's okay to use getenv here, because this function is only used |
782 | to initialize variables when Emacs starts up, and isn't called | |
783 | after that. */ | |
e065a56e JB |
784 | if (evarname != 0) |
785 | path = (char *) getenv (evarname); | |
786 | else | |
787 | path = 0; | |
f927c5ae JB |
788 | if (!path) |
789 | path = defalt; | |
790 | lpath = Qnil; | |
791 | while (1) | |
792 | { | |
793 | p = index (path, SEPCHAR); | |
794 | if (!p) p = path + strlen (path); | |
795 | lpath = Fcons (p - path ? make_string (path, p - path) : Qnil, | |
796 | lpath); | |
797 | if (*p) | |
798 | path = p + 1; | |
799 | else | |
800 | break; | |
801 | } | |
802 | return Fnreverse (lpath); | |
803 | } | |
804 | ||
805 | syms_of_emacs () | |
806 | { | |
807 | #ifdef HAVE_SHM | |
808 | defsubr (&Sdump_emacs_data); | |
809 | #else | |
810 | defsubr (&Sdump_emacs); | |
811 | #endif | |
812 | ||
813 | defsubr (&Skill_emacs); | |
814 | ||
815 | DEFVAR_LISP ("command-line-args", &Vcommand_line_args, | |
816 | "Args passed by shell to Emacs, as a list of strings."); | |
817 | ||
818 | DEFVAR_LISP ("system-type", &Vsystem_type, | |
819 | "Value is symbol indicating type of operating system you are using."); | |
820 | Vsystem_type = intern (SYSTEM_TYPE); | |
821 | ||
822 | DEFVAR_BOOL ("noninteractive", &noninteractive1, | |
823 | "Non-nil means Emacs is running without interactive terminal."); | |
e5d77022 | 824 | |
e5d77022 | 825 | DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook, |
edc8ae07 JB |
826 | "Hook to be run whenever kill-emacs is called.\n\ |
827 | Since kill-emacs may be invoked when the terminal is disconnected (or\n\ | |
828 | in other similar situations), functions placed on this hook should not\n\ | |
829 | not expect to be able to interact with the user."); | |
830 | Vkill_emacs_hook = Qnil; | |
3005da00 RS |
831 | |
832 | DEFVAR_INT ("emacs-priority", &emacs_priority, | |
833 | "Priority for Emacs to run at.\n\ | |
834 | This value is effective only if set before Emacs is dumped,\n\ | |
835 | and only if the Emacs executable is installed with setuid to permit\n\ | |
836 | it to change priority. (Emacs sets its uid back to the real uid.)"); | |
837 | emacs_priority = 0; | |
f927c5ae | 838 | } |