Commit | Line | Data |
---|---|---|
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 | ||
43165242 KH |
56 | extern void malloc_warning (); |
57 | extern char *index (); | |
58 | extern char *strerror (); | |
59 | ||
f927c5ae JB |
60 | /* Command line args from shell, as list of strings */ |
61 | Lisp_Object Vcommand_line_args; | |
62 | ||
59653951 JB |
63 | /* The name under which Emacs was invoked, with any leading directory |
64 | names discarded. */ | |
65 | Lisp_Object Vinvocation_name; | |
66 | ||
ace40a69 RS |
67 | /* The directory name from which Emacs was invoked. */ |
68 | Lisp_Object Vinvocation_directory; | |
69 | ||
07f4d123 RS |
70 | /* The directory name in which to find subdirs such as lisp and etc. |
71 | nil means get them only from PATH_LOADSEARCH. */ | |
72 | Lisp_Object Vinstallation_directory; | |
73 | ||
e5d77022 JB |
74 | /* Hook run by `kill-emacs' before it does really anything. */ |
75 | Lisp_Object Vkill_emacs_hook; | |
76 | ||
f927c5ae JB |
77 | /* Set nonzero after Emacs has started up the first time. |
78 | Prevents reinitialization of the Lisp world and keymaps | |
79 | on subsequent starts. */ | |
80 | int initialized; | |
81 | ||
271c7b7c | 82 | /* Variable whose value is symbol giving operating system type. */ |
f927c5ae | 83 | Lisp_Object Vsystem_type; |
271c7b7c RS |
84 | |
85 | /* Variable whose value is string giving configuration built for. */ | |
86 | Lisp_Object Vsystem_configuration; | |
f0fc0b1a KH |
87 | |
88 | /* Variable whose value is string giving configuration options, | |
89 | for use when reporting bugs. */ | |
90 | Lisp_Object Vsystem_configuration_options; | |
91 | ||
f927c5ae JB |
92 | /* If non-zero, emacs should not attempt to use an window-specific code, |
93 | but instead should use the virtual terminal under which it was started */ | |
94 | int inhibit_window_system; | |
95 | ||
5aa7f46a JB |
96 | /* If nonzero, set Emacs to run at this priority. This is also used |
97 | in child_setup and sys_suspend to make sure subshells run at normal | |
98 | priority; Those functions have their own extern declaration. */ | |
3005da00 RS |
99 | int emacs_priority; |
100 | ||
7074fde6 FP |
101 | /* If non-zero a filter or a sentinel is running. Tested to save the match |
102 | data on the first attempt to change it inside asynchronous code. */ | |
103 | int running_asynch_code; | |
104 | ||
647cec74 | 105 | #ifdef BSD_PGRPS |
9ae8f997 JB |
106 | /* See sysdep.c. */ |
107 | extern int inherited_pgroup; | |
108 | #endif | |
109 | ||
f927c5ae JB |
110 | #ifdef HAVE_X_WINDOWS |
111 | /* If non-zero, -d was specified, meaning we're using some window system. */ | |
112 | int display_arg; | |
113 | #endif | |
114 | ||
115 | /* An address near the bottom of the stack. | |
116 | Tells GC how to save a copy of the stack. */ | |
117 | char *stack_bottom; | |
118 | ||
119 | #ifdef HAVE_X_WINDOWS | |
120 | extern Lisp_Object Vwindow_system; | |
121 | #endif /* HAVE_X_WINDOWS */ | |
122 | ||
123 | #ifdef USG_SHARED_LIBRARIES | |
124 | /* If nonzero, this is the place to put the end of the writable segment | |
125 | at startup. */ | |
126 | ||
127 | unsigned int bss_end = 0; | |
128 | #endif | |
129 | ||
130 | /* Nonzero means running Emacs without interactive terminal. */ | |
131 | ||
132 | int noninteractive; | |
133 | ||
134 | /* Value of Lisp variable `noninteractive'. | |
135 | Normally same as C variable `noninteractive' | |
136 | but nothing terrible happens if user sets this one. */ | |
137 | ||
138 | int noninteractive1; | |
e29f86e4 RS |
139 | |
140 | /* Save argv and argc. */ | |
141 | char **initial_argv; | |
142 | int initial_argc; | |
081bef73 RS |
143 | |
144 | static void sort_args (); | |
f927c5ae JB |
145 | \f |
146 | /* Signal code for the fatal signal that was received */ | |
147 | int fatal_error_code; | |
148 | ||
149 | /* Nonzero if handling a fatal error already */ | |
150 | int fatal_error_in_progress; | |
151 | ||
152 | /* Handle bus errors, illegal instruction, etc. */ | |
2447c626 | 153 | SIGTYPE |
f927c5ae JB |
154 | fatal_error_signal (sig) |
155 | int sig; | |
156 | { | |
f927c5ae JB |
157 | fatal_error_code = sig; |
158 | signal (sig, SIG_DFL); | |
159 | ||
160 | /* If fatal error occurs in code below, avoid infinite recursion. */ | |
8090eb09 JB |
161 | if (! fatal_error_in_progress) |
162 | { | |
163 | fatal_error_in_progress = 1; | |
f927c5ae | 164 | |
f7ab4e3d | 165 | shut_down_emacs (sig, 0, Qnil); |
8090eb09 | 166 | } |
f927c5ae JB |
167 | |
168 | #ifdef VMS | |
f927c5ae JB |
169 | LIB$STOP (SS$_ABORT); |
170 | #else | |
8090eb09 JB |
171 | /* Signal the same code; this time it will really be fatal. |
172 | Remember that since we're in a signal handler, the signal we're | |
173 | going to send is probably blocked, so we have to unblock it if we | |
174 | want to really receive it. */ | |
29b89fe0 | 175 | #ifndef MSDOS |
a90538cb | 176 | sigunblock (sigmask (fatal_error_code)); |
29b89fe0 | 177 | #endif |
f927c5ae JB |
178 | kill (getpid (), fatal_error_code); |
179 | #endif /* not VMS */ | |
180 | } | |
271c7b7c RS |
181 | |
182 | #ifdef SIGDANGER | |
183 | ||
16c323ee | 184 | /* Handler for SIGDANGER. */ |
271c7b7c RS |
185 | SIGTYPE |
186 | memory_warning_signal (sig) | |
187 | int sig; | |
188 | { | |
189 | signal (sig, memory_warning_signal); | |
190 | ||
191 | malloc_warning ("Operating system warns that virtual memory is running low.\n"); | |
55796183 RS |
192 | |
193 | /* It might be unsafe to call do_auto_save now. */ | |
194 | force_auto_save_soon (); | |
271c7b7c RS |
195 | } |
196 | #endif | |
f927c5ae JB |
197 | \f |
198 | /* Code for dealing with Lisp access to the Unix command line */ | |
199 | ||
200 | static | |
201 | init_cmdargs (argc, argv, skip_args) | |
202 | int argc; | |
203 | char **argv; | |
204 | int skip_args; | |
205 | { | |
206 | register int i; | |
07f4d123 | 207 | Lisp_Object name, dir; |
f927c5ae | 208 | |
e29f86e4 RS |
209 | initial_argv = argv; |
210 | initial_argc = argc; | |
211 | ||
cb421be8 | 212 | Vinvocation_name = Ffile_name_nondirectory (build_string (argv[0])); |
ace40a69 RS |
213 | Vinvocation_directory = Ffile_name_directory (build_string (argv[0])); |
214 | /* If we got no directory in argv[0], search PATH to find where | |
215 | Emacs actually came from. */ | |
216 | if (NILP (Vinvocation_directory)) | |
217 | { | |
218 | Lisp_Object found; | |
219 | int yes = openp (Vexec_path, Vinvocation_name, | |
6c362a8b | 220 | EXEC_SUFFIXES, &found, 1); |
e443f843 | 221 | if (yes == 1) |
ace40a69 RS |
222 | Vinvocation_directory = Ffile_name_directory (found); |
223 | } | |
59653951 | 224 | |
07f4d123 RS |
225 | Vinstallation_directory = Qnil; |
226 | ||
227 | if (!NILP (Vinvocation_directory)) | |
228 | { | |
229 | dir = Vinvocation_directory; | |
230 | name = Fexpand_file_name (Vinvocation_name, dir); | |
231 | while (1) | |
232 | { | |
f5ab9736 | 233 | Lisp_Object tem, lib_src_exists; |
07f4d123 RS |
234 | Lisp_Object etc_exists, info_exists; |
235 | ||
f5ab9736 RS |
236 | /* See if dir contains subdirs for use by Emacs. |
237 | Check for the ones that would exist in a build directory, | |
238 | not including lisp and info. */ | |
239 | tem = Fexpand_file_name (build_string ("lib-src"), dir); | |
240 | lib_src_exists = Ffile_exists_p (tem); | |
241 | if (!NILP (lib_src_exists)) | |
07f4d123 | 242 | { |
f5ab9736 RS |
243 | tem = Fexpand_file_name (build_string ("etc"), dir); |
244 | etc_exists = Ffile_exists_p (tem); | |
245 | if (!NILP (etc_exists)) | |
07f4d123 | 246 | { |
f5ab9736 RS |
247 | Vinstallation_directory |
248 | = Ffile_name_as_directory (dir); | |
249 | break; | |
07f4d123 RS |
250 | } |
251 | } | |
252 | ||
253 | /* See if dir's parent contains those subdirs. */ | |
f5ab9736 RS |
254 | tem = Fexpand_file_name (build_string ("../lib-src"), dir); |
255 | lib_src_exists = Ffile_exists_p (tem); | |
256 | if (!NILP (lib_src_exists)) | |
07f4d123 | 257 | { |
f5ab9736 RS |
258 | tem = Fexpand_file_name (build_string ("../etc"), dir); |
259 | etc_exists = Ffile_exists_p (tem); | |
260 | if (!NILP (etc_exists)) | |
07f4d123 | 261 | { |
f5ab9736 RS |
262 | tem = Fexpand_file_name (build_string (".."), dir); |
263 | Vinstallation_directory | |
264 | = Ffile_name_as_directory (tem); | |
265 | break; | |
07f4d123 RS |
266 | } |
267 | } | |
268 | ||
269 | /* If the Emacs executable is actually a link, | |
270 | next try the dir that the link points into. */ | |
271 | tem = Ffile_symlink_p (name); | |
272 | if (!NILP (tem)) | |
273 | { | |
260ec24d | 274 | name = Fexpand_file_name (tem, dir); |
07f4d123 RS |
275 | dir = Ffile_name_directory (name); |
276 | } | |
277 | else | |
278 | break; | |
279 | } | |
280 | } | |
281 | ||
f927c5ae JB |
282 | Vcommand_line_args = Qnil; |
283 | ||
284 | for (i = argc - 1; i >= 0; i--) | |
285 | { | |
286 | if (i == 0 || i > skip_args) | |
287 | Vcommand_line_args | |
288 | = Fcons (build_string (argv[i]), Vcommand_line_args); | |
289 | } | |
290 | } | |
59653951 JB |
291 | |
292 | DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0, | |
293 | "Return the program name that was used to run Emacs.\n\ | |
294 | Any directory names are omitted.") | |
295 | () | |
296 | { | |
297 | return Fcopy_sequence (Vinvocation_name); | |
298 | } | |
299 | ||
ace40a69 RS |
300 | DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory, |
301 | 0, 0, 0, | |
302 | "Return the directory name in which the Emacs executable was located") | |
303 | () | |
304 | { | |
305 | return Fcopy_sequence (Vinvocation_directory); | |
306 | } | |
307 | ||
f927c5ae JB |
308 | \f |
309 | #ifdef VMS | |
310 | #ifdef LINK_CRTL_SHARE | |
311 | #ifdef SHAREABLE_LIB_BUG | |
312 | extern noshare char **environ; | |
313 | #endif /* SHAREABLE_LIB_BUG */ | |
314 | #endif /* LINK_CRTL_SHARE */ | |
315 | #endif /* VMS */ | |
316 | ||
a90538cb | 317 | #ifndef ORDINARY_LINK |
efd241cc RS |
318 | /* We don't include crtbegin.o and crtend.o in the link, |
319 | so these functions and variables might be missed. | |
320 | Provide dummy definitions to avoid error. | |
321 | (We don't have any real constructors or destructors.) */ | |
322 | #ifdef __GNUC__ | |
46e65b73 | 323 | #ifndef GCC_CTORS_IN_LIBC |
c83a7064 | 324 | __do_global_ctors () |
efd241cc | 325 | {} |
c83a7064 RS |
326 | __do_global_ctors_aux () |
327 | {} | |
33143604 RS |
328 | __do_global_dtors () |
329 | {} | |
64c1864a RS |
330 | /* Linux has a bug in its library; avoid an error. */ |
331 | #ifndef LINUX | |
c83a7064 | 332 | char * __CTOR_LIST__[2] = { (char *) (-1), 0 }; |
64c1864a | 333 | #endif |
c83a7064 | 334 | char * __DTOR_LIST__[2] = { (char *) (-1), 0 }; |
46e65b73 | 335 | #endif /* GCC_CTORS_IN_LIBC */ |
c83a7064 | 336 | __main () |
efd241cc | 337 | {} |
efd241cc | 338 | #endif /* __GNUC__ */ |
a90538cb | 339 | #endif /* ORDINARY_LINK */ |
efd241cc | 340 | |
e2925360 KH |
341 | /* Test whether the next argument in ARGV matches SSTR or a prefix of |
342 | LSTR (at least MINLEN characters). If so, then if VALPTR is non-null | |
343 | (the argument is supposed to have a value) store in *VALPTR either | |
344 | the next argument or the portion of this one after the equal sign. | |
345 | ARGV is read starting at position *SKIPPTR; this index is advanced | |
346 | by the number of arguments used. | |
347 | ||
348 | Too bad we can't just use getopt for all of this, but we don't have | |
349 | enough information to do it right. */ | |
081bef73 | 350 | |
e2925360 | 351 | static int |
df6530f8 | 352 | argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr) |
e2925360 | 353 | char **argv; |
df6530f8 | 354 | int argc; |
e2925360 KH |
355 | char *sstr; |
356 | char *lstr; | |
357 | int minlen; | |
358 | char **valptr; | |
359 | int *skipptr; | |
360 | { | |
361 | char *p; | |
362 | int arglen; | |
df6530f8 RS |
363 | char *arg; |
364 | ||
365 | /* Don't access argv[argc]; give up in advance. */ | |
366 | if (argc <= *skipptr + 1) | |
367 | return 0; | |
368 | ||
369 | arg = argv[*skipptr+1]; | |
e2925360 KH |
370 | if (arg == NULL) |
371 | return 0; | |
372 | if (strcmp (arg, sstr) == 0) | |
373 | { | |
374 | if (valptr != NULL) | |
375 | { | |
376 | *valptr = argv[*skipptr+2]; | |
377 | *skipptr += 2; | |
378 | } | |
379 | else | |
380 | *skipptr += 1; | |
381 | return 1; | |
382 | } | |
383 | arglen = (valptr != NULL && (p = index (arg, '=')) != NULL | |
384 | ? p - arg : strlen (arg)); | |
c03e1113 | 385 | if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0) |
e2925360 KH |
386 | return 0; |
387 | else if (valptr == NULL) | |
388 | { | |
389 | *skipptr += 1; | |
390 | return 1; | |
391 | } | |
392 | else if (p != NULL) | |
393 | { | |
394 | *valptr = p+1; | |
395 | *skipptr += 1; | |
396 | return 1; | |
397 | } | |
398 | else if (argv[*skipptr+2] != NULL) | |
399 | { | |
400 | *valptr = argv[*skipptr+2]; | |
401 | *skipptr += 2; | |
402 | return 1; | |
403 | } | |
404 | else | |
405 | { | |
406 | return 0; | |
407 | } | |
408 | } | |
409 | ||
f927c5ae JB |
410 | /* ARGSUSED */ |
411 | main (argc, argv, envp) | |
412 | int argc; | |
413 | char **argv; | |
414 | char **envp; | |
415 | { | |
416 | char stack_bottom_variable; | |
417 | int skip_args = 0; | |
418 | extern int errno; | |
419 | extern sys_nerr; | |
f927c5ae | 420 | |
081bef73 RS |
421 | sort_args (argc, argv); |
422 | ||
f927c5ae JB |
423 | /* Map in shared memory, if we are using that. */ |
424 | #ifdef HAVE_SHM | |
df6530f8 | 425 | if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args)) |
f927c5ae JB |
426 | { |
427 | map_in_data (0); | |
428 | /* The shared memory was just restored, which clobbered this. */ | |
429 | skip_args = 1; | |
430 | } | |
431 | else | |
432 | { | |
433 | map_in_data (1); | |
434 | /* The shared memory was just restored, which clobbered this. */ | |
435 | skip_args = 0; | |
436 | } | |
437 | #endif | |
438 | ||
19a36ec6 | 439 | #ifdef NeXT |
4b163808 | 440 | extern int malloc_cookie; |
19a36ec6 RS |
441 | |
442 | /* This helps out unexnext.c. */ | |
443 | if (initialized) | |
444 | if (malloc_jumpstart (malloc_cookie) != 0) | |
445 | printf ("malloc jumpstart failed!\n"); | |
446 | #endif /* NeXT */ | |
447 | ||
f927c5ae JB |
448 | #ifdef VMS |
449 | /* If -map specified, map the data file in */ | |
e2925360 KH |
450 | { |
451 | char *file; | |
df6530f8 | 452 | if (argmatch (argv, argc, "-map", "--map-data", 3, &mapin_file, &skip_args)) |
e2925360 KH |
453 | mapin_data (file); |
454 | } | |
f927c5ae JB |
455 | |
456 | #ifdef LINK_CRTL_SHARE | |
457 | #ifdef SHAREABLE_LIB_BUG | |
458 | /* Bletcherous shared libraries! */ | |
459 | if (!stdin) | |
460 | stdin = fdopen (0, "r"); | |
461 | if (!stdout) | |
462 | stdout = fdopen (1, "w"); | |
463 | if (!stderr) | |
464 | stderr = fdopen (2, "w"); | |
465 | if (!environ) | |
466 | environ = envp; | |
467 | #endif /* SHAREABLE_LIB_BUG */ | |
468 | #endif /* LINK_CRTL_SHARE */ | |
469 | #endif /* VMS */ | |
470 | ||
471 | /* Record (approximately) where the stack begins. */ | |
472 | stack_bottom = &stack_bottom_variable; | |
473 | ||
474 | #ifdef RUN_TIME_REMAP | |
475 | if (initialized) | |
476 | run_time_remap (argv[0]); | |
477 | #endif | |
478 | ||
479 | #ifdef USG_SHARED_LIBRARIES | |
480 | if (bss_end) | |
481 | brk (bss_end); | |
482 | #endif | |
483 | ||
484 | clearerr (stdin); | |
9ae8f997 | 485 | |
f927c5ae JB |
486 | #ifdef APOLLO |
487 | #ifndef APOLLO_SR10 | |
488 | /* If USE_DOMAIN_ACLS environment variable exists, | |
489 | use ACLs rather than UNIX modes. */ | |
490 | if (egetenv ("USE_DOMAIN_ACLS")) | |
491 | default_acl (USE_DEFACL); | |
492 | #endif | |
493 | #endif /* APOLLO */ | |
494 | ||
495 | #ifndef SYSTEM_MALLOC | |
496 | if (! initialized) | |
9ac0d9e0 JB |
497 | { |
498 | /* Arrange to get warning messages as memory fills up. */ | |
499 | memory_warnings (0, malloc_warning); | |
500 | ||
501 | /* Arrange to disable interrupt input while malloc and friends are | |
502 | running. */ | |
503 | uninterrupt_malloc (); | |
504 | } | |
f927c5ae JB |
505 | #endif /* not SYSTEM_MALLOC */ |
506 | ||
29b89fe0 RS |
507 | #ifdef MSDOS |
508 | /* We do all file input/output as binary files. When we need to translate | |
509 | newlines, we do that manually. */ | |
510 | _fmode = O_BINARY; | |
511 | (stdin)->_flag &= ~_IOTEXT; | |
512 | (stdout)->_flag &= ~_IOTEXT; | |
513 | (stderr)->_flag &= ~_IOTEXT; | |
514 | #endif /* MSDOS */ | |
515 | ||
a422068f | 516 | #ifdef SET_EMACS_PRIORITY |
3005da00 | 517 | if (emacs_priority) |
5aa7f46a | 518 | nice (emacs_priority); |
f927c5ae | 519 | setuid (getuid ()); |
a422068f | 520 | #endif /* SET_EMACS_PRIORITY */ |
f927c5ae | 521 | |
d8b3a65d | 522 | #ifdef EXTRA_INITIALIZE |
a9260219 | 523 | EXTRA_INITIALIZE; |
d8b3a65d RS |
524 | #endif |
525 | ||
f927c5ae JB |
526 | inhibit_window_system = 0; |
527 | ||
4fc0b45b | 528 | /* Handle the -t switch, which specifies filename to use as terminal */ |
e2925360 KH |
529 | { |
530 | char *term; | |
df6530f8 | 531 | if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args)) |
e2925360 KH |
532 | { |
533 | int result; | |
534 | close (0); | |
535 | close (1); | |
536 | result = open (term, O_RDWR, 2 ); | |
537 | if (result < 0) | |
538 | { | |
539 | char *errstring = strerror (errno); | |
540 | fprintf (stderr, "emacs: %s: %s\n", term, errstring); | |
541 | exit (1); | |
542 | } | |
543 | dup (0); | |
544 | if (! isatty (0)) | |
545 | { | |
546 | fprintf (stderr, "emacs: %s: not a tty\n", term); | |
547 | exit (1); | |
548 | } | |
549 | fprintf (stderr, "Using %s\n", term); | |
f927c5ae | 550 | #ifdef HAVE_X_WINDOWS |
e2925360 | 551 | inhibit_window_system = 1; /* -t => -nw */ |
f927c5ae | 552 | #endif |
e2925360 KH |
553 | } |
554 | } | |
df6530f8 | 555 | if (argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args)) |
e2925360 | 556 | inhibit_window_system = 1; |
f927c5ae | 557 | |
e2925360 | 558 | /* Handle the -batch switch, which means don't do interactive display. */ |
f927c5ae | 559 | noninteractive = 0; |
df6530f8 | 560 | if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args)) |
e2925360 KH |
561 | noninteractive = 1; |
562 | ||
563 | /* Handle the --help option, which gives a usage message.. */ | |
df6530f8 | 564 | if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args)) |
f927c5ae | 565 | { |
e2925360 KH |
566 | printf ("\ |
567 | Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\ | |
568 | [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\ | |
569 | \(Arguments above this line must be first; those below may be in any order)\n\ | |
570 | [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\ | |
571 | file-to-visit [--kill]\n", argv[0]); | |
572 | exit (0); | |
f927c5ae JB |
573 | } |
574 | ||
081bef73 RS |
575 | #ifdef HAVE_X_WINDOWS |
576 | /* Stupid kludge to catch command-line display spec. We can't | |
577 | handle this argument entirely in window system dependent code | |
578 | because we don't even know which window system dependent code | |
579 | to run until we've recognized this argument. */ | |
580 | { | |
581 | char *displayname; | |
582 | int i; | |
583 | int count_before = skip_args; | |
584 | ||
df6530f8 | 585 | if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args)) |
081bef73 | 586 | display_arg = 1; |
df6530f8 | 587 | else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args)) |
081bef73 RS |
588 | display_arg = 1; |
589 | ||
590 | /* If we have the form --display=NAME, | |
591 | convert it into -d name. | |
592 | This requires inserting a new element into argv. */ | |
593 | if (displayname != 0 && skip_args - count_before == 1) | |
594 | { | |
595 | char **new = (char **) xmalloc (sizeof (char *) * (argc + 2)); | |
596 | int j; | |
597 | ||
598 | for (j = 0; j < count_before + 1; j++) | |
599 | new[j] = argv[j]; | |
600 | new[count_before + 1] = "-d"; | |
601 | new[count_before + 2] = displayname; | |
602 | for (j = count_before + 2; j <argc; j++) | |
603 | new[j + 1] = argv[j]; | |
604 | argv = new; | |
605 | argc++; | |
606 | } | |
607 | else if (displayname != 0 && argv[count_before + 1][1] == '-') | |
608 | argv[count_before] = "-d"; | |
609 | ||
610 | /* Don't actually discard this arg. */ | |
611 | skip_args = count_before; | |
612 | } | |
613 | #endif | |
614 | ||
edb85f59 RS |
615 | if (! noninteractive) |
616 | { | |
617 | #ifdef BSD_PGRPS | |
618 | if (initialized) | |
619 | { | |
620 | inherited_pgroup = EMACS_GETPGRP (0); | |
621 | setpgrp (0, getpid ()); | |
622 | } | |
623 | #else | |
624 | #if defined (USG5) && defined (INTERRUPT_INPUT) | |
625 | setpgrp (); | |
626 | #endif | |
627 | #endif | |
628 | } | |
629 | ||
fb8e9847 JB |
630 | #ifdef POSIX_SIGNALS |
631 | init_signals (); | |
632 | #endif | |
633 | ||
f927c5ae JB |
634 | if ( |
635 | #ifndef CANNOT_DUMP | |
636 | ! noninteractive || initialized | |
637 | #else | |
638 | 1 | |
639 | #endif | |
640 | ) | |
641 | { | |
642 | /* Don't catch these signals in batch mode if not initialized. | |
643 | On some machines, this sets static data that would make | |
644 | signal fail to work right when the dumped Emacs is run. */ | |
645 | signal (SIGHUP, fatal_error_signal); | |
646 | signal (SIGQUIT, fatal_error_signal); | |
647 | signal (SIGILL, fatal_error_signal); | |
648 | signal (SIGTRAP, fatal_error_signal); | |
a90538cb JB |
649 | #ifdef SIGIOT |
650 | /* This is missing on some systems - OS/2, for example. */ | |
f927c5ae | 651 | signal (SIGIOT, fatal_error_signal); |
a90538cb | 652 | #endif |
f927c5ae JB |
653 | #ifdef SIGEMT |
654 | signal (SIGEMT, fatal_error_signal); | |
655 | #endif | |
656 | signal (SIGFPE, fatal_error_signal); | |
00eaaa32 | 657 | #ifdef SIGBUS |
f927c5ae | 658 | signal (SIGBUS, fatal_error_signal); |
00eaaa32 | 659 | #endif |
f927c5ae | 660 | signal (SIGSEGV, fatal_error_signal); |
00eaaa32 | 661 | #ifdef SIGSYS |
f927c5ae | 662 | signal (SIGSYS, fatal_error_signal); |
00eaaa32 | 663 | #endif |
f927c5ae JB |
664 | signal (SIGTERM, fatal_error_signal); |
665 | #ifdef SIGXCPU | |
666 | signal (SIGXCPU, fatal_error_signal); | |
667 | #endif | |
668 | #ifdef SIGXFSZ | |
669 | signal (SIGXFSZ, fatal_error_signal); | |
670 | #endif /* SIGXFSZ */ | |
671 | ||
271c7b7c RS |
672 | #ifdef SIGDANGER |
673 | /* This just means available memory is getting low. */ | |
674 | signal (SIGDANGER, memory_warning_signal); | |
675 | #endif | |
676 | ||
f927c5ae | 677 | #ifdef AIX |
56e034fa RS |
678 | /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */ |
679 | signal (SIGXCPU, fatal_error_signal); | |
0aef8561 | 680 | #ifndef _I386 |
f927c5ae | 681 | signal (SIGIOINT, fatal_error_signal); |
0aef8561 | 682 | #endif |
f927c5ae JB |
683 | signal (SIGGRANT, fatal_error_signal); |
684 | signal (SIGRETRACT, fatal_error_signal); | |
685 | signal (SIGSOUND, fatal_error_signal); | |
686 | signal (SIGMSG, fatal_error_signal); | |
687 | #endif /* AIX */ | |
688 | } | |
689 | ||
690 | noninteractive1 = noninteractive; | |
691 | ||
692 | /* Perform basic initializations (not merely interning symbols) */ | |
693 | ||
694 | if (!initialized) | |
695 | { | |
696 | init_alloc_once (); | |
697 | init_obarray (); | |
698 | init_eval_once (); | |
699 | init_syntax_once (); /* Create standard syntax table. */ | |
700 | /* Must be done before init_buffer */ | |
701 | init_casetab_once (); | |
702 | init_buffer_once (); /* Create buffer table and some buffers */ | |
703 | init_minibuf_once (); /* Create list of minibuffers */ | |
704 | /* Must precede init_window_once */ | |
705 | init_window_once (); /* Init the window system */ | |
706 | } | |
707 | ||
708 | init_alloc (); | |
f927c5ae JB |
709 | init_eval (); |
710 | init_data (); | |
7074fde6 | 711 | running_asynch_code = 0; |
0e956009 | 712 | |
29b89fe0 RS |
713 | #ifdef MSDOS |
714 | /* Call early 'cause init_environment needs it. */ | |
715 | init_dosfns (); | |
716 | /* Set defaults for several environment variables. */ | |
717 | if (initialized) init_environment (argc, argv, skip_args); | |
718 | #endif | |
719 | ||
0e956009 JB |
720 | /* egetenv is a pretty low-level facility, which may get called in |
721 | many circumstances; it seems flimsy to put off initializing it | |
722 | until calling init_callproc. */ | |
723 | set_process_environment (); | |
93aed04d RS |
724 | /* AIX crashes are reported in system versions 3.2.3 and 3.2.4 |
725 | if this is not done. Do it after set_process_environment so that we | |
726 | don't pollute Vprocess_environment. */ | |
727 | #ifdef AIX | |
728 | putenv ("LANG=C"); | |
729 | #endif | |
0e956009 | 730 | |
ace40a69 RS |
731 | init_buffer (); /* Init default directory of main buffer */ |
732 | ||
7928f0b5 | 733 | init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */ |
ace40a69 | 734 | init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */ |
7928f0b5 | 735 | init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */ |
fb8e9847 | 736 | init_lread (); |
f927c5ae | 737 | |
f927c5ae JB |
738 | if (!noninteractive) |
739 | { | |
740 | #ifdef VMS | |
1cbd5d9d | 741 | init_vms_input ();/* init_display calls get_frame_size, that needs this */ |
f927c5ae JB |
742 | #endif /* VMS */ |
743 | init_display (); /* Determine terminal type. init_sys_modes uses results */ | |
744 | } | |
745 | init_keyboard (); /* This too must precede init_sys_modes */ | |
f927c5ae JB |
746 | #ifdef VMS |
747 | init_vmsproc (); /* And this too. */ | |
748 | #endif /* VMS */ | |
749 | init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */ | |
750 | init_xdisp (); | |
751 | init_macros (); | |
752 | init_editfns (); | |
753 | #ifdef LISP_FLOAT_TYPE | |
754 | init_floatfns (); | |
755 | #endif | |
756 | #ifdef VMS | |
757 | init_vmsfns (); | |
758 | #endif /* VMS */ | |
f927c5ae | 759 | init_process (); |
32676c08 JB |
760 | #ifdef CLASH_DETECTION |
761 | init_filelock (); | |
762 | #endif /* CLASH_DETECTION */ | |
f927c5ae JB |
763 | |
764 | /* Intern the names of all standard functions and variables; define standard keys */ | |
765 | ||
766 | if (!initialized) | |
767 | { | |
768 | /* The basic levels of Lisp must come first */ | |
769 | /* And data must come first of all | |
770 | for the sake of symbols like error-message */ | |
771 | syms_of_data (); | |
772 | syms_of_alloc (); | |
fb8e9847 | 773 | syms_of_lread (); |
f927c5ae JB |
774 | syms_of_print (); |
775 | syms_of_eval (); | |
776 | syms_of_fns (); | |
f927c5ae | 777 | syms_of_floatfns (); |
f927c5ae JB |
778 | |
779 | syms_of_abbrev (); | |
780 | syms_of_buffer (); | |
781 | syms_of_bytecode (); | |
782 | syms_of_callint (); | |
783 | syms_of_casefiddle (); | |
784 | syms_of_casetab (); | |
785 | syms_of_callproc (); | |
786 | syms_of_cmds (); | |
787 | #ifndef NO_DIR_LIBRARY | |
788 | syms_of_dired (); | |
789 | #endif /* not NO_DIR_LIBRARY */ | |
790 | syms_of_display (); | |
791 | syms_of_doc (); | |
792 | syms_of_editfns (); | |
793 | syms_of_emacs (); | |
794 | syms_of_fileio (); | |
795 | #ifdef CLASH_DETECTION | |
796 | syms_of_filelock (); | |
797 | #endif /* CLASH_DETECTION */ | |
798 | syms_of_indent (); | |
799 | syms_of_keyboard (); | |
800 | syms_of_keymap (); | |
801 | syms_of_macros (); | |
802 | syms_of_marker (); | |
803 | syms_of_minibuf (); | |
804 | syms_of_mocklisp (); | |
f927c5ae | 805 | syms_of_process (); |
f927c5ae | 806 | syms_of_search (); |
1cbd5d9d | 807 | syms_of_frame (); |
f927c5ae | 808 | syms_of_syntax (); |
0d934e7b | 809 | syms_of_term (); |
f927c5ae | 810 | syms_of_undo (); |
bef79ee4 JA |
811 | |
812 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ | |
813 | syms_of_textprop (); | |
f927c5ae JB |
814 | #ifdef VMS |
815 | syms_of_vmsproc (); | |
816 | #endif /* VMS */ | |
817 | syms_of_window (); | |
818 | syms_of_xdisp (); | |
819 | #ifdef HAVE_X_WINDOWS | |
72412588 | 820 | syms_of_xterm (); |
f927c5ae | 821 | syms_of_xfns (); |
9c3f23b7 | 822 | syms_of_xfaces (); |
72412588 JB |
823 | #ifdef HAVE_X11 |
824 | syms_of_xselect (); | |
825 | #endif | |
dbc4e1c1 | 826 | #ifdef HAVE_X_MENU |
f927c5ae JB |
827 | syms_of_xmenu (); |
828 | #endif /* HAVE_X_MENU */ | |
829 | #endif /* HAVE_X_WINDOWS */ | |
830 | ||
87485d6f MW |
831 | #if defined (MSDOS) && !defined (HAVE_X_WINDOWS) |
832 | syms_of_xfaces (); | |
833 | syms_of_xmenu (); | |
834 | #endif | |
835 | ||
f927c5ae JB |
836 | #ifdef SYMS_SYSTEM |
837 | SYMS_SYSTEM; | |
838 | #endif | |
839 | ||
840 | #ifdef SYMS_MACHINE | |
841 | SYMS_MACHINE; | |
842 | #endif | |
843 | ||
844 | keys_of_casefiddle (); | |
845 | keys_of_cmds (); | |
846 | keys_of_buffer (); | |
847 | keys_of_keyboard (); | |
848 | keys_of_keymap (); | |
849 | keys_of_macros (); | |
850 | keys_of_minibuf (); | |
851 | keys_of_window (); | |
5e67fbc2 | 852 | keys_of_frame (); |
f927c5ae JB |
853 | } |
854 | ||
855 | if (!initialized) | |
856 | { | |
e2925360 | 857 | char *file; |
f927c5ae | 858 | /* Handle -l loadup-and-dump, args passed by Makefile. */ |
df6530f8 | 859 | if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args)) |
f927c5ae | 860 | Vtop_level = Fcons (intern ("load"), |
e2925360 | 861 | Fcons (build_string (file), Qnil)); |
f927c5ae JB |
862 | #ifdef CANNOT_DUMP |
863 | /* Unless next switch is -nl, load "loadup.el" first thing. */ | |
df6530f8 | 864 | if (!argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args)) |
f927c5ae JB |
865 | Vtop_level = Fcons (intern ("load"), |
866 | Fcons (build_string ("loadup.el"), Qnil)); | |
867 | #endif /* CANNOT_DUMP */ | |
868 | } | |
869 | ||
870 | initialized = 1; | |
871 | ||
afe9fae9 RS |
872 | #if defined (sun) || defined (LOCALTIME_CACHE) |
873 | /* sun's localtime has a bug. it caches the value of the time | |
279cc2b8 JB |
874 | zone rather than looking it up every time. Since localtime() is |
875 | called to bolt the undumping time into the undumped emacs, this | |
afe9fae9 RS |
876 | results in localtime ignoring the TZ environment variable. |
877 | This flushes the new TZ value into localtime. */ | |
878 | tzset (); | |
879 | #endif /* defined (sun) || defined (LOCALTIME_CACHE) */ | |
279cc2b8 | 880 | |
e2925360 | 881 | /* Handle the GNU standard option --version. */ |
df6530f8 | 882 | if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args)) |
e2925360 KH |
883 | { |
884 | Lisp_Object ver; | |
885 | ver = call0 (intern ("emacs-version")); | |
886 | if (STRINGP (ver)) | |
887 | printf ("%s\n", XSTRING (ver)->data); | |
888 | exit (0); | |
889 | } | |
890 | ||
f927c5ae JB |
891 | /* Enter editor command loop. This never returns. */ |
892 | Frecursive_edit (); | |
893 | /* NOTREACHED */ | |
894 | } | |
895 | \f | |
081bef73 RS |
896 | /* Sort the args so we can find the most important ones |
897 | at the beginning of argv. */ | |
898 | ||
899 | /* First, here's a table of all the standard options. */ | |
900 | ||
901 | struct standard_args | |
902 | { | |
903 | char *name; | |
904 | char *longname; | |
905 | int priority; | |
906 | int nargs; | |
907 | }; | |
908 | ||
909 | struct standard_args standard_args[] = | |
910 | { | |
911 | { "-nl", "--no-shared-memory", 100, 0 }, | |
912 | { "-map", "--map-data", 100, 0 }, | |
913 | { "-t", "--terminal", 90, 1 }, | |
914 | { "-d", "--display", 80, 1 }, | |
915 | { "-display", 0, 80, 1 }, | |
916 | { "-nw", "--no-windows", 70, 0 }, | |
917 | { "-batch", "--batch", 60, 0 }, | |
918 | { "-q", "--no-init-file", 50, 0 }, | |
919 | { "-no-init-file", 0, 50, 0 }, | |
920 | { "-no-site-file", "--no-site-file", 40, 0 }, | |
921 | { "-u", "--user", 30, 1 }, | |
922 | { "-user", 0, 30, 1 }, | |
923 | { "-debug-init", "--debug-init", 20, 0 }, | |
924 | { "-l", "--load", 10, 1 }, | |
925 | { "-load", 0, 10, 1 }, | |
926 | { "-f", "--funcall", 10, 1 }, | |
927 | { "-funcall", 0, 10, 1 }, | |
928 | { "-insert", "--insert", 10, 1 }, | |
929 | { "-bg", "--background-color", 10, 1 }, | |
930 | { "-background", 0, 10, 1 }, | |
931 | { "-fg", "--foreground-color", 10, 1 }, | |
932 | { "-foreground", 0, 10, 1 }, | |
933 | { "-bd", "--border-color", 10, 1 }, | |
934 | { "-bw", "--border-width", 10, 1 }, | |
935 | { "-ib", "--internal-border", 10, 1 }, | |
936 | { "-ms", "--mouse-color", 10, 1 }, | |
937 | { "-cr", "--cursor-color", 10, 1 }, | |
938 | { "-fn", "--font", 10, 1 }, | |
939 | { "-font", 0, 10, 1 }, | |
940 | { "-g", "--geometry", 10, 1 }, | |
941 | { "-geometry", 0, 10, 1 }, | |
942 | { "-T", "--title", 10, 1 }, | |
943 | { "-i", "--icon-type", 10, 1 }, | |
944 | { "-itype", 0, 10, 1 }, | |
945 | { "-name", "--name", 10, 1 }, | |
946 | { "-xrm", "--xrm", 10, 1 }, | |
947 | { "-r", "--reverse-video", 0, 0 }, | |
948 | { "-rv", 0, 0, 0 }, | |
949 | { "-reverse", 0, 0, 0 }, | |
950 | { "-vb", "--vertical-scroll-bars", 0, 0 }, | |
951 | { "-iconic", "--iconic", 0, 0 }, | |
952 | { "-kill", "--kill", 0, 0 }, | |
953 | }; | |
954 | ||
955 | /* Reorder the elements of ARGV (assumed to have ARGC elements) | |
956 | so that the highest priority ones come first. | |
957 | Do not change the order of elements of equal priority. | |
958 | If an option takes an argument, keep it and its argument together. */ | |
959 | ||
960 | static void | |
961 | sort_args (argc, argv) | |
962 | int argc; | |
963 | char **argv; | |
964 | { | |
965 | char **new = (char **) xmalloc (sizeof (char *) * argc); | |
966 | /* For each element of argv, | |
967 | the corresponding element of options is: | |
968 | 0 for an option that takes no arguments, | |
969 | 1 for an option that takes one argument, etc. | |
970 | -1 for an ordinary non-option argument. */ | |
6dad9359 | 971 | int *options = (int *) xmalloc (sizeof (int) * argc); |
081bef73 RS |
972 | int *priority = (int *) xmalloc (sizeof (int) * argc); |
973 | int to = 1; | |
974 | int from; | |
975 | int i; | |
976 | ||
977 | /* Categorize all the options, | |
978 | and figure out which argv elts are option arguments. */ | |
979 | for (from = 1; from < argc; from++) | |
980 | { | |
981 | options[from] = -1; | |
982 | priority[from] = -1; | |
983 | if (argv[from][0] == '-') | |
984 | { | |
985 | int match, thislen; | |
986 | char *equals; | |
987 | ||
988 | /* Look for a match with a known old-fashioned option. */ | |
989 | for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++) | |
990 | if (!strcmp (argv[from], standard_args[i].name)) | |
991 | { | |
992 | options[from] = standard_args[i].nargs; | |
993 | priority[from] = standard_args[i].priority; | |
994 | from += standard_args[i].nargs; | |
995 | goto done; | |
996 | } | |
997 | ||
998 | /* Look for a match with a known long option. | |
999 | MATCH is -1 if no match so far, -2 if two or more matches so far, | |
1000 | >= 0 (the table index of the match) if just one match so far. */ | |
1001 | if (argv[from][1] == '-') | |
1002 | { | |
1003 | match = -1; | |
1004 | thislen = strlen (argv[from]); | |
1005 | equals = index (argv[from], '='); | |
1006 | if (equals != 0) | |
1007 | thislen = equals - argv[from]; | |
1008 | ||
1009 | for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++) | |
1010 | if (!strncmp (argv[from], standard_args[i].longname, thislen)) | |
1011 | { | |
1012 | if (match == -1) | |
1013 | match = i; | |
1014 | else | |
1015 | match = -2; | |
1016 | } | |
1017 | ||
1018 | /* If we found exactly one match, use that. */ | |
1019 | if (match >= 0) | |
1020 | { | |
1021 | options[from] = standard_args[match].nargs; | |
1022 | priority[from] = standard_args[match].priority; | |
1023 | /* If --OPTION=VALUE syntax is used, | |
1024 | this option uses just one argv element. */ | |
1025 | if (equals != 0) | |
1026 | options[from] = 0; | |
1027 | from += options[from]; | |
1028 | } | |
1029 | } | |
1030 | done: ; | |
1031 | } | |
1032 | } | |
1033 | ||
1034 | /* Copy the arguments, in order of decreasing priority, to NEW. */ | |
1035 | new[0] = argv[0]; | |
1036 | while (to < argc) | |
1037 | { | |
1038 | int best = -1; | |
1039 | int best_priority = -2; | |
1040 | ||
1041 | /* Find the highest priority remaining option. | |
1042 | If several have equal priority, take the first of them. */ | |
1043 | for (from = 1; from < argc; from++) | |
1044 | { | |
1045 | if (argv[from] != 0 && priority[from] > best_priority) | |
1046 | { | |
1047 | best_priority = priority[from]; | |
1048 | best = from; | |
1049 | } | |
1050 | /* Skip option arguments--they are tied to the options. */ | |
1051 | if (options[from] > 0) | |
1052 | from += options[from]; | |
1053 | } | |
1054 | ||
1055 | if (best < 0) | |
1056 | abort (); | |
1057 | ||
1058 | /* Copy the highest priority remaining option, with its args, to NEW. */ | |
1059 | new[to++] = argv[best]; | |
1060 | for (i = 0; i < options[best]; i++) | |
1061 | new[to++] = argv[best + i + 1]; | |
1062 | ||
1063 | /* Clear out this option in ARGV. */ | |
1064 | argv[best] = 0; | |
1065 | for (i = 0; i < options[best]; i++) | |
1066 | argv[best + i + 1] = 0; | |
1067 | } | |
1068 | ||
6dad9359 | 1069 | bcopy (new, argv, sizeof (char *) * argc); |
081bef73 RS |
1070 | } |
1071 | \f | |
f927c5ae | 1072 | DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P", |
edc8ae07 | 1073 | "Exit the Emacs job and kill it.\n\ |
f927c5ae JB |
1074 | If ARG is an integer, return ARG as the exit program code.\n\ |
1075 | If ARG is a string, stuff it as keyboard input.\n\n\ | |
1076 | The value of `kill-emacs-hook', if not void,\n\ | |
1077 | is a list of functions (of no args),\n\ | |
1078 | all of which are called before Emacs is actually killed.") | |
1079 | (arg) | |
1080 | Lisp_Object arg; | |
1081 | { | |
1082 | Lisp_Object hook, hook1; | |
1083 | int i; | |
1084 | struct gcpro gcpro1; | |
1085 | ||
1086 | GCPRO1 (arg); | |
1087 | ||
1088 | if (feof (stdin)) | |
1089 | arg = Qt; | |
1090 | ||
2447c626 | 1091 | if (!NILP (Vrun_hooks) && !noninteractive) |
f927c5ae JB |
1092 | call1 (Vrun_hooks, intern ("kill-emacs-hook")); |
1093 | ||
f927c5ae JB |
1094 | UNGCPRO; |
1095 | ||
1096 | /* Is it really necessary to do this deassign | |
1097 | when we are going to exit anyway? */ | |
1098 | /* #ifdef VMS | |
1099 | stop_vms_input (); | |
1100 | #endif */ | |
40be253a | 1101 | |
d0068e25 | 1102 | shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil); |
40be253a | 1103 | |
55ccc0b3 | 1104 | exit (INTEGERP (arg) ? XINT (arg) |
f927c5ae JB |
1105 | #ifdef VMS |
1106 | : 1 | |
1107 | #else | |
1108 | : 0 | |
1109 | #endif | |
1110 | ); | |
1111 | /* NOTREACHED */ | |
1112 | } | |
40be253a JB |
1113 | |
1114 | ||
1115 | /* Perform an orderly shutdown of Emacs. Autosave any modified | |
1116 | buffers, kill any child processes, clean up the terminal modes (if | |
1117 | we're in the foreground), and other stuff like that. Don't perform | |
1118 | any redisplay; this may be called when Emacs is shutting down in | |
1119 | the background, or after its X connection has died. | |
1120 | ||
1121 | If SIG is a signal number, print a message for it. | |
1122 | ||
1123 | This is called by fatal signal handlers, X protocol error handlers, | |
1124 | and Fkill_emacs. */ | |
f7ab4e3d | 1125 | |
40be253a | 1126 | void |
f7ab4e3d | 1127 | shut_down_emacs (sig, no_x, stuff) |
41423a80 | 1128 | int sig, no_x; |
f7ab4e3d | 1129 | Lisp_Object stuff; |
40be253a | 1130 | { |
829d872b RS |
1131 | /* Prevent running of hooks from now on. */ |
1132 | Vrun_hooks = Qnil; | |
1133 | ||
40be253a JB |
1134 | /* If we are controlling the terminal, reset terminal modes */ |
1135 | #ifdef EMACS_HAVE_TTY_PGRP | |
1136 | { | |
d04d81d2 RS |
1137 | int pgrp = EMACS_GETPGRP (0); |
1138 | ||
40be253a JB |
1139 | int tpgrp; |
1140 | if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1 | |
5a570e37 | 1141 | && tpgrp == pgrp) |
40be253a JB |
1142 | { |
1143 | fflush (stdout); | |
1144 | reset_sys_modes (); | |
1145 | if (sig && sig != SIGTERM) | |
1146 | fprintf (stderr, "Fatal error (%d).", sig); | |
1147 | } | |
1148 | } | |
1149 | #else | |
1150 | fflush (stdout); | |
1151 | reset_sys_modes (); | |
1152 | #endif | |
1153 | ||
f7ab4e3d RS |
1154 | stuff_buffered_input (stuff); |
1155 | ||
40be253a JB |
1156 | kill_buffer_processes (Qnil); |
1157 | Fdo_auto_save (Qt, Qnil); | |
1158 | ||
1159 | #ifdef CLASH_DETECTION | |
1160 | unlock_all_files (); | |
1161 | #endif | |
1162 | ||
1163 | #ifdef VMS | |
1164 | kill_vms_processes (); | |
1165 | #endif | |
1166 | ||
5e7f8733 | 1167 | #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */ |
41423a80 | 1168 | #ifdef HAVE_X_WINDOWS |
f7511647 RS |
1169 | /* It's not safe to call intern here. Maybe we are crashing. */ |
1170 | if (!noninteractive && SYMBOLP (Vwindow_system) | |
1171 | && XSYMBOL (Vwindow_system)->name->size == 1 | |
1172 | && XSYMBOL (Vwindow_system)->name->data[0] == 'x' | |
1173 | && ! no_x) | |
41423a80 RS |
1174 | Fx_close_current_connection (); |
1175 | #endif /* HAVE_X_WINDOWS */ | |
5e7f8733 | 1176 | #endif |
41423a80 | 1177 | |
40be253a JB |
1178 | #ifdef SIGIO |
1179 | /* There is a tendency for a SIGIO signal to arrive within exit, | |
1180 | and cause a SIGHUP because the input descriptor is already closed. */ | |
1181 | unrequest_sigio (); | |
1182 | signal (SIGIO, SIG_IGN); | |
1183 | #endif | |
1184 | } | |
1185 | ||
1186 | ||
f927c5ae JB |
1187 | \f |
1188 | #ifndef CANNOT_DUMP | |
1189 | /* Nothing like this can be implemented on an Apollo. | |
1190 | What a loss! */ | |
1191 | ||
1192 | #ifdef HAVE_SHM | |
1193 | ||
1194 | DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0, | |
1195 | "Dump current state of Emacs into data file FILENAME.\n\ | |
1196 | This function exists on systems that use HAVE_SHM.") | |
1197 | (intoname) | |
1198 | Lisp_Object intoname; | |
1199 | { | |
1200 | extern int my_edata; | |
1201 | Lisp_Object tem; | |
f927c5ae JB |
1202 | |
1203 | CHECK_STRING (intoname, 0); | |
1204 | intoname = Fexpand_file_name (intoname, Qnil); | |
1205 | ||
1206 | tem = Vpurify_flag; | |
1207 | Vpurify_flag = Qnil; | |
1208 | ||
1209 | fflush (stdout); | |
1210 | /* Tell malloc where start of impure now is */ | |
1211 | /* Also arrange for warnings when nearly out of space. */ | |
1212 | #ifndef SYSTEM_MALLOC | |
70eb2c3e | 1213 | memory_warnings (&my_edata, malloc_warning); |
f927c5ae JB |
1214 | #endif |
1215 | map_out_data (XSTRING (intoname)->data); | |
1216 | ||
1217 | Vpurify_flag = tem; | |
1218 | ||
1219 | return Qnil; | |
1220 | } | |
1221 | ||
1222 | #else /* not HAVE_SHM */ | |
1223 | ||
1224 | DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0, | |
1225 | "Dump current state of Emacs into executable file FILENAME.\n\ | |
1226 | Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\ | |
1227 | This is used in the file `loadup.el' when building Emacs.\n\ | |
1228 | \n\ | |
1229 | Bind `command-line-processed' to nil before dumping,\n\ | |
1230 | if you want the dumped Emacs to process its command line\n\ | |
1231 | and announce itself normally when it is run.") | |
1232 | (intoname, symname) | |
1233 | Lisp_Object intoname, symname; | |
1234 | { | |
1235 | extern int my_edata; | |
1236 | Lisp_Object tem; | |
f927c5ae JB |
1237 | |
1238 | CHECK_STRING (intoname, 0); | |
1239 | intoname = Fexpand_file_name (intoname, Qnil); | |
2447c626 | 1240 | if (!NILP (symname)) |
f927c5ae JB |
1241 | { |
1242 | CHECK_STRING (symname, 0); | |
1243 | if (XSTRING (symname)->size) | |
1244 | symname = Fexpand_file_name (symname, Qnil); | |
1245 | } | |
1246 | ||
1247 | tem = Vpurify_flag; | |
1248 | Vpurify_flag = Qnil; | |
1249 | ||
1250 | fflush (stdout); | |
1251 | #ifdef VMS | |
1252 | mapout_data (XSTRING (intoname)->data); | |
1253 | #else | |
1254 | /* Tell malloc where start of impure now is */ | |
1255 | /* Also arrange for warnings when nearly out of space. */ | |
1256 | #ifndef SYSTEM_MALLOC | |
cc5f52cb RS |
1257 | #ifndef WINDOWSNT |
1258 | /* On Windows, this was done before dumping, and that once suffices. | |
1259 | Meanwhile, my_edata is not valid on Windows. */ | |
70eb2c3e | 1260 | memory_warnings (&my_edata, malloc_warning); |
cc5f52cb | 1261 | #endif /* not WINDOWSNT */ |
f927c5ae JB |
1262 | #endif |
1263 | unexec (XSTRING (intoname)->data, | |
2447c626 | 1264 | !NILP (symname) ? XSTRING (symname)->data : 0, &my_edata, 0, 0); |
f927c5ae JB |
1265 | #endif /* not VMS */ |
1266 | ||
1267 | Vpurify_flag = tem; | |
1268 | ||
1269 | return Qnil; | |
1270 | } | |
1271 | ||
1272 | #endif /* not HAVE_SHM */ | |
1273 | ||
1274 | #endif /* not CANNOT_DUMP */ | |
1275 | \f | |
4b163808 | 1276 | #ifndef SEPCHAR |
f927c5ae JB |
1277 | #define SEPCHAR ':' |
1278 | #endif | |
1279 | ||
1280 | Lisp_Object | |
1281 | decode_env_path (evarname, defalt) | |
1282 | char *evarname, *defalt; | |
1283 | { | |
1284 | register char *path, *p; | |
f927c5ae JB |
1285 | |
1286 | Lisp_Object lpath; | |
1287 | ||
2447c626 JB |
1288 | /* It's okay to use getenv here, because this function is only used |
1289 | to initialize variables when Emacs starts up, and isn't called | |
1290 | after that. */ | |
e065a56e JB |
1291 | if (evarname != 0) |
1292 | path = (char *) getenv (evarname); | |
1293 | else | |
1294 | path = 0; | |
f927c5ae JB |
1295 | if (!path) |
1296 | path = defalt; | |
1297 | lpath = Qnil; | |
1298 | while (1) | |
1299 | { | |
1300 | p = index (path, SEPCHAR); | |
1301 | if (!p) p = path + strlen (path); | |
1302 | lpath = Fcons (p - path ? make_string (path, p - path) : Qnil, | |
1303 | lpath); | |
1304 | if (*p) | |
1305 | path = p + 1; | |
1306 | else | |
1307 | break; | |
1308 | } | |
1309 | return Fnreverse (lpath); | |
1310 | } | |
1311 | ||
1312 | syms_of_emacs () | |
1313 | { | |
83591e66 | 1314 | #ifndef CANNOT_DUMP |
f927c5ae JB |
1315 | #ifdef HAVE_SHM |
1316 | defsubr (&Sdump_emacs_data); | |
1317 | #else | |
1318 | defsubr (&Sdump_emacs); | |
83591e66 | 1319 | #endif |
f927c5ae JB |
1320 | #endif |
1321 | ||
1322 | defsubr (&Skill_emacs); | |
1323 | ||
59653951 | 1324 | defsubr (&Sinvocation_name); |
ace40a69 | 1325 | defsubr (&Sinvocation_directory); |
59653951 | 1326 | |
f927c5ae JB |
1327 | DEFVAR_LISP ("command-line-args", &Vcommand_line_args, |
1328 | "Args passed by shell to Emacs, as a list of strings."); | |
1329 | ||
1330 | DEFVAR_LISP ("system-type", &Vsystem_type, | |
1331 | "Value is symbol indicating type of operating system you are using."); | |
1332 | Vsystem_type = intern (SYSTEM_TYPE); | |
1333 | ||
271c7b7c RS |
1334 | DEFVAR_LISP ("system-configuration", &Vsystem_configuration, |
1335 | "Value is string indicating configuration Emacs was built for."); | |
f7511647 | 1336 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); |
271c7b7c | 1337 | |
f0fc0b1a KH |
1338 | DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options, |
1339 | "String containing the configuration options Emacs was built with."); | |
1340 | Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS); | |
1341 | ||
f927c5ae JB |
1342 | DEFVAR_BOOL ("noninteractive", &noninteractive1, |
1343 | "Non-nil means Emacs is running without interactive terminal."); | |
e5d77022 | 1344 | |
e5d77022 | 1345 | DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook, |
edc8ae07 JB |
1346 | "Hook to be run whenever kill-emacs is called.\n\ |
1347 | Since kill-emacs may be invoked when the terminal is disconnected (or\n\ | |
1348 | in other similar situations), functions placed on this hook should not\n\ | |
679aee02 | 1349 | expect to be able to interact with the user."); |
edc8ae07 | 1350 | Vkill_emacs_hook = Qnil; |
3005da00 RS |
1351 | |
1352 | DEFVAR_INT ("emacs-priority", &emacs_priority, | |
1353 | "Priority for Emacs to run at.\n\ | |
1354 | This value is effective only if set before Emacs is dumped,\n\ | |
1355 | and only if the Emacs executable is installed with setuid to permit\n\ | |
621ecf99 | 1356 | it to change priority. (Emacs sets its uid back to the real uid.)\n\ |
a422068f | 1357 | Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\ |
ce305b11 | 1358 | before you compile Emacs, to enable the code for this feature."); |
3005da00 | 1359 | emacs_priority = 0; |
59653951 | 1360 | |
f67de86f RS |
1361 | DEFVAR_LISP ("invocation-name", &Vinvocation_name, |
1362 | "The program name that was used to run Emacs.\n\ | |
1363 | Any directory names are omitted."); | |
1364 | ||
1365 | DEFVAR_LISP ("invocation-directory", &Vinvocation_directory, | |
1366 | "The directory in which the Emacs executable was found, to run it.\n\ | |
1367 | The value is nil if that directory's name is not known."); | |
1368 | ||
1369 | DEFVAR_LISP ("installation-directory", &Vinstallation_directory, | |
1370 | "A directory within which to look for the `lib-src' and `etc' directories.\n\ | |
1371 | This is non-nil when we can't find those directories in their standard\n\ | |
1372 | installed locations, but we can find them\n\ | |
1373 | near where the Emacs executable was found."); | |
07f4d123 | 1374 | Vinstallation_directory = Qnil; |
f927c5ae | 1375 | } |