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1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,98,1999,2001,02,03,2004
3 Free Software Foundation, Inc.
4
5 This file is part of GNU Emacs.
6
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
10 any later version.
11
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
21
22
23 #include <config.h>
24 #include <signal.h>
25 #include <errno.h>
26 #include <stdio.h>
27
28 #include <sys/types.h>
29 #include <sys/file.h>
30
31 #ifdef VMS
32 #include <ssdef.h>
33 #endif
34
35 #ifdef HAVE_UNISTD_H
36 #include <unistd.h>
37 #endif
38
39 #ifdef BSD_SYSTEM
40 #include <sys/ioctl.h>
41 #endif
42
43 #ifdef WINDOWSNT
44 #include <fcntl.h>
45 #endif
46
47 #include "lisp.h"
48 #include "commands.h"
49 #include "intervals.h"
50 #include "buffer.h"
51 #include "window.h"
52
53 #include "systty.h"
54 #include "blockinput.h"
55 #include "syssignal.h"
56 #include "process.h"
57 #include "termhooks.h"
58 #include "keyboard.h"
59 #include "keymap.h"
60
61 #ifdef HAVE_SETLOCALE
62 #include <locale.h>
63 #endif
64
65 #ifdef HAVE_SETRLIMIT
66 #include <sys/time.h>
67 #include <sys/resource.h>
68 #endif
69
70 #ifdef HAVE_PERSONALITY_LINUX32
71 #include <sys/personality.h>
72 #endif
73
74 #ifndef O_RDWR
75 #define O_RDWR 2
76 #endif
77
78 #ifdef HAVE_SETPGID
79 #if !defined (USG) || defined (BSD_PGRPS)
80 #undef setpgrp
81 #define setpgrp setpgid
82 #endif
83 #endif
84
85 extern void malloc_warning P_ ((char *));
86 extern void set_time_zone_rule P_ ((char *));
87 #ifdef HAVE_INDEX
88 extern char *index P_ ((const char *, int));
89 #endif
90
91 /* Make these values available in GDB, which doesn't see macros. */
92
93 #ifdef USE_LSB_TAG
94 int gdb_use_lsb = 1;
95 #else
96 int gdb_use_lsb = 0;
97 #endif
98 #ifdef NO_UNION_TYPE
99 int gdb_use_union = 0;
100 #else
101 int gdb_use_union = 1;
102 #endif
103 EMACS_INT gdb_valbits = VALBITS;
104 EMACS_INT gdb_gctypebits = GCTYPEBITS;
105 #ifdef DATA_SEG_BITS
106 EMACS_INT gdb_data_seg_bits = DATA_SEG_BITS;
107 #else
108 EMACS_INT gdb_data_seg_bits = 0;
109 #endif
110 EMACS_INT PVEC_FLAG = PSEUDOVECTOR_FLAG;
111 EMACS_INT gdb_array_mark_flag = ARRAY_MARK_FLAG;
112
113 /* Command line args from shell, as list of strings. */
114 Lisp_Object Vcommand_line_args;
115
116 /* The name under which Emacs was invoked, with any leading directory
117 names discarded. */
118 Lisp_Object Vinvocation_name;
119
120 /* The directory name from which Emacs was invoked. */
121 Lisp_Object Vinvocation_directory;
122
123 /* The directory name in which to find subdirs such as lisp and etc.
124 nil means get them only from PATH_LOADSEARCH. */
125 Lisp_Object Vinstallation_directory;
126
127 /* Hook run by `kill-emacs' before it does really anything. */
128 Lisp_Object Vkill_emacs_hook;
129
130 /* An empty lisp string. To avoid having to build any other. */
131 Lisp_Object empty_string;
132
133 /* Search path separator. */
134 Lisp_Object Vpath_separator;
135
136 /* Set nonzero after Emacs has started up the first time.
137 Prevents reinitialization of the Lisp world and keymaps
138 on subsequent starts. */
139 int initialized;
140
141 #ifdef DOUG_LEA_MALLOC
142 /* Preserves a pointer to the memory allocated that copies that
143 static data inside glibc's malloc. */
144 void *malloc_state_ptr;
145 /* From glibc, a routine that returns a copy of the malloc internal state. */
146 extern void *malloc_get_state ();
147 /* From glibc, a routine that overwrites the malloc internal state. */
148 extern void malloc_set_state ();
149 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
150 dumping. Used to work around a bug in glibc's malloc. */
151 int malloc_using_checking;
152 #endif
153
154 /* Variable whose value is symbol giving operating system type. */
155 Lisp_Object Vsystem_type;
156
157 /* Variable whose value is string giving configuration built for. */
158 Lisp_Object Vsystem_configuration;
159
160 /* Variable whose value is string giving configuration options,
161 for use when reporting bugs. */
162 Lisp_Object Vsystem_configuration_options;
163
164 Lisp_Object Qfile_name_handler_alist;
165
166 /* Current and previous system locales for messages and time. */
167 Lisp_Object Vsystem_messages_locale;
168 Lisp_Object Vprevious_system_messages_locale;
169 Lisp_Object Vsystem_time_locale;
170 Lisp_Object Vprevious_system_time_locale;
171
172 /* If non-zero, emacs should not attempt to use a window-specific code,
173 but instead should use the virtual terminal under which it was started. */
174 int inhibit_window_system;
175
176 /* If nonzero, set Emacs to run at this priority. This is also used
177 in child_setup and sys_suspend to make sure subshells run at normal
178 priority; those functions have their own extern declaration. */
179 EMACS_INT emacs_priority;
180
181 /* If non-zero, a filter or a sentinel is running. Tested to save the match
182 data on the first attempt to change it inside asynchronous code. */
183 int running_asynch_code;
184
185 #ifdef BSD_PGRPS
186 /* See sysdep.c. */
187 extern int inherited_pgroup;
188 #endif
189
190 #ifdef HAVE_X_WINDOWS
191 /* If non-zero, -d was specified, meaning we're using some window system. */
192 int display_arg;
193 #endif
194
195 /* An address near the bottom of the stack.
196 Tells GC how to save a copy of the stack. */
197 char *stack_bottom;
198
199 /* The address where the heap starts (from the first sbrk (0) call). */
200 static void *my_heap_start;
201
202 /* The gap between BSS end and heap start as far as we can tell. */
203 static unsigned long heap_bss_diff;
204
205 /* If the gap between BSS end and heap start is larger than this we try to
206 work around it, and if that fails, output a warning in dump-emacs. */
207 #define MAX_HEAP_BSS_DIFF (1024*1024)
208
209
210 #ifdef HAVE_WINDOW_SYSTEM
211 extern Lisp_Object Vwindow_system;
212 #endif /* HAVE_WINDOW_SYSTEM */
213
214 extern Lisp_Object Vauto_save_list_file_name;
215
216 extern Lisp_Object Vinhibit_redisplay;
217
218 #ifdef USG_SHARED_LIBRARIES
219 /* If nonzero, this is the place to put the end of the writable segment
220 at startup. */
221
222 unsigned int bss_end = 0;
223 #endif
224
225 /* Nonzero means running Emacs without interactive terminal. */
226
227 int noninteractive;
228
229 /* Value of Lisp variable `noninteractive'.
230 Normally same as C variable `noninteractive'
231 but nothing terrible happens if user sets this one. */
232
233 int noninteractive1;
234
235 /* Save argv and argc. */
236 char **initial_argv;
237 int initial_argc;
238
239 static void sort_args ();
240 void syms_of_emacs ();
241
242 /* MSVC needs each string be shorter than 2048 bytes, so the usage
243 strings below are split to not overflow this limit. */
244 #define USAGE1 "\
245 Usage: %s [OPTION-OR-FILENAME]...\n\
246 \n\
247 Run Emacs, the extensible, customizable, self-documenting real-time\n\
248 display editor. The recommended way to start Emacs for normal editing\n\
249 is with no options at all.\n\
250 \n\
251 Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
252 read the main documentation for these command-line arguments.\n\
253 \n\
254 Initialization options:\n\
255 \n\
256 --batch do not do interactive display; implies -q\n\
257 --debug-init enable Emacs Lisp debugger for init file\n\
258 --display, -d DISPLAY use X server DISPLAY\n\
259 --multibyte, --no-unibyte inhibit the effect of EMACS_UNIBYTE\n\
260 --no-desktop do not load a saved desktop\n\
261 --no-init-file, -q load neither ~/.emacs nor default.el\n\
262 --no-shared-memory, -nl do not use shared memory\n\
263 --no-site-file do not load site-start.el\n\
264 --no-splash do not display a splash screen on startup\n\
265 --no-window-system, -nw don't communicate with X, ignoring $DISPLAY\n\
266 --script FILE run FILE as an Emacs Lisp script\n\
267 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
268 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
269 --user, -u USER load ~USER/.emacs instead of your own\n\
270 \n%s"
271
272 #define USAGE2 "\
273 Action options:\n\
274 \n\
275 FILE visit FILE using find-file\n\
276 +LINE FILE visit FILE using find-file, then go to line LINE\n\
277 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
278 column COLUMN\n\
279 --directory, -L DIR add DIR to variable load-path\n\
280 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
281 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
282 --file FILE visit FILE using find-file\n\
283 --find-file FILE visit FILE using find-file\n\
284 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
285 --insert FILE insert contents of FILE into current buffer\n\
286 --kill exit without asking for confirmation\n\
287 --load, -l FILE load Emacs Lisp FILE using the load function\n\
288 --visit FILE visit FILE using find-file\n\
289 \n"
290
291 #define USAGE3 "\
292 Display options:\n\
293 \n\
294 --background-color, -bg COLOR window background color\n\
295 --border-color, -bd COLOR main border color\n\
296 --border-width, -bw WIDTH width of main border\n\
297 --color MODE color mode for character terminals;\n\
298 MODE defaults to `auto', and can also\n\
299 be `never', `auto', `always',\n\
300 or a mode name like `ansi8'\n\
301 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
302 --font, -fn FONT default font; must be fixed-width\n\
303 --foreground-color, -fg COLOR window foreground color\n\
304 --fullheight, -fh make the first frame high as the screen\n\
305 --fullscreen, -fs make first frame fullscreen\n\
306 --fullwidth, -fw make the first frame wide as the screen\n\
307 --geometry, -g GEOMETRY window geometry\n\
308 --icon-type, -i use picture of gnu for Emacs icon\n\
309 --iconic start Emacs in iconified state\n\
310 --internal-border, -ib WIDTH width between text and main border\n\
311 --line-spacing, -lsp PIXELS additional space to put between lines\n\
312 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
313 --name NAME title for initial Emacs frame\n\
314 --reverse-video, -r, -rv switch foreground and background\n\
315 --title, -T TITLE title for initial Emacs frame\n\
316 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
317 --xrm XRESOURCES set additional X resources\n\
318 --help display this help and exit\n\
319 --version output version information and exit\n\
320 \n\
321 You can generally also specify long option names with a single -; for\n\
322 example, -batch as well as --batch. You can use any unambiguous\n\
323 abbreviation for a --option.\n\
324 \n\
325 Various environment variables and window system resources also affect\n\
326 Emacs' operation. See the main documentation.\n\
327 \n"
328
329 #define USAGE4 "\
330 Report bugs to %s. First, please see the Bugs\n\
331 section of the Emacs manual or the file BUGS.\n"
332
333 \f
334 /* Signal code for the fatal signal that was received. */
335 int fatal_error_code;
336
337 /* Nonzero if handling a fatal error already. */
338 int fatal_error_in_progress;
339
340 /* If non-null, call this function from fatal_error_signal before
341 committing suicide. */
342
343 void (*fatal_error_signal_hook) P_ ((void));
344
345
346 #ifdef SIGUSR1
347 SIGTYPE
348 handle_USR1_signal (sig)
349 int sig;
350 {
351 struct input_event buf;
352
353 bzero (&buf, sizeof buf);
354 buf.kind = USER_SIGNAL_EVENT;
355 buf.frame_or_window = selected_frame;
356
357 kbd_buffer_store_event (&buf);
358 }
359 #endif /* SIGUSR1 */
360
361 #ifdef SIGUSR2
362 SIGTYPE
363 handle_USR2_signal (sig)
364 int sig;
365 {
366 struct input_event buf;
367
368 bzero (&buf, sizeof buf);
369 buf.kind = USER_SIGNAL_EVENT;
370 buf.code = 1;
371 buf.frame_or_window = selected_frame;
372
373 kbd_buffer_store_event (&buf);
374 }
375 #endif /* SIGUSR2 */
376
377 /* Handle bus errors, invalid instruction, etc. */
378 SIGTYPE
379 fatal_error_signal (sig)
380 int sig;
381 {
382 fatal_error_code = sig;
383 signal (sig, SIG_DFL);
384
385 TOTALLY_UNBLOCK_INPUT;
386
387 /* If fatal error occurs in code below, avoid infinite recursion. */
388 if (! fatal_error_in_progress)
389 {
390 fatal_error_in_progress = 1;
391
392 shut_down_emacs (sig, 0, Qnil);
393 }
394
395 #ifdef VMS
396 LIB$STOP (SS$_ABORT);
397 #else
398 /* Signal the same code; this time it will really be fatal.
399 Remember that since we're in a signal handler, the signal we're
400 going to send is probably blocked, so we have to unblock it if we
401 want to really receive it. */
402 #ifndef MSDOS
403 sigunblock (sigmask (fatal_error_code));
404 #endif
405
406 if (fatal_error_signal_hook)
407 fatal_error_signal_hook ();
408
409 kill (getpid (), fatal_error_code);
410 #endif /* not VMS */
411 }
412
413 #ifdef SIGDANGER
414
415 /* Handler for SIGDANGER. */
416 SIGTYPE
417 memory_warning_signal (sig)
418 int sig;
419 {
420 signal (sig, memory_warning_signal);
421
422 malloc_warning ("Operating system warns that virtual memory is running low.\n");
423
424 /* It might be unsafe to call do_auto_save now. */
425 force_auto_save_soon ();
426 }
427 #endif
428
429 /* We define abort, rather than using it from the library,
430 so that GDB can return from a breakpoint here.
431 MSDOS has its own definition in msdos.c. */
432
433 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
434
435 #ifndef ABORT_RETURN_TYPE
436 #define ABORT_RETURN_TYPE void
437 #endif
438
439 ABORT_RETURN_TYPE
440 abort ()
441 {
442 kill (getpid (), SIGABRT);
443 /* This shouldn't be executed, but it prevents a warning. */
444 exit (1);
445 }
446 #endif
447
448 \f
449 /* Code for dealing with Lisp access to the Unix command line. */
450
451 static void
452 init_cmdargs (argc, argv, skip_args)
453 int argc;
454 char **argv;
455 int skip_args;
456 {
457 register int i;
458 Lisp_Object name, dir, tem;
459 int count = SPECPDL_INDEX ();
460 Lisp_Object raw_name;
461
462 initial_argv = argv;
463 initial_argc = argc;
464
465 raw_name = build_string (argv[0]);
466
467 /* Add /: to the front of the name
468 if it would otherwise be treated as magic. */
469 tem = Ffind_file_name_handler (raw_name, Qt);
470 if (! NILP (tem))
471 raw_name = concat2 (build_string ("/:"), raw_name);
472
473 Vinvocation_name = Ffile_name_nondirectory (raw_name);
474 Vinvocation_directory = Ffile_name_directory (raw_name);
475
476 /* If we got no directory in argv[0], search PATH to find where
477 Emacs actually came from. */
478 if (NILP (Vinvocation_directory))
479 {
480 Lisp_Object found;
481 int yes = openp (Vexec_path, Vinvocation_name,
482 Vexec_suffixes, &found, make_number (X_OK));
483 if (yes == 1)
484 {
485 /* Add /: to the front of the name
486 if it would otherwise be treated as magic. */
487 tem = Ffind_file_name_handler (found, Qt);
488 if (! NILP (tem))
489 found = concat2 (build_string ("/:"), found);
490 Vinvocation_directory = Ffile_name_directory (found);
491 }
492 }
493
494 if (!NILP (Vinvocation_directory)
495 && NILP (Ffile_name_absolute_p (Vinvocation_directory)))
496 /* Emacs was started with relative path, like ./emacs.
497 Make it absolute. */
498 Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil);
499
500 Vinstallation_directory = Qnil;
501
502 if (!NILP (Vinvocation_directory))
503 {
504 dir = Vinvocation_directory;
505 name = Fexpand_file_name (Vinvocation_name, dir);
506 while (1)
507 {
508 Lisp_Object tem, lib_src_exists;
509 Lisp_Object etc_exists, info_exists;
510
511 /* See if dir contains subdirs for use by Emacs.
512 Check for the ones that would exist in a build directory,
513 not including lisp and info. */
514 tem = Fexpand_file_name (build_string ("lib-src"), dir);
515 lib_src_exists = Ffile_exists_p (tem);
516
517 #ifdef MSDOS
518 /* MSDOS installations frequently remove lib-src, but we still
519 must set installation-directory, or else info won't find
520 its files (it uses the value of installation-directory). */
521 tem = Fexpand_file_name (build_string ("info"), dir);
522 info_exists = Ffile_exists_p (tem);
523 #else
524 info_exists = Qnil;
525 #endif
526
527 if (!NILP (lib_src_exists) || !NILP (info_exists))
528 {
529 tem = Fexpand_file_name (build_string ("etc"), dir);
530 etc_exists = Ffile_exists_p (tem);
531 if (!NILP (etc_exists))
532 {
533 Vinstallation_directory
534 = Ffile_name_as_directory (dir);
535 break;
536 }
537 }
538
539 /* See if dir's parent contains those subdirs. */
540 tem = Fexpand_file_name (build_string ("../lib-src"), dir);
541 lib_src_exists = Ffile_exists_p (tem);
542
543
544 #ifdef MSDOS
545 /* See the MSDOS commentary above. */
546 tem = Fexpand_file_name (build_string ("../info"), dir);
547 info_exists = Ffile_exists_p (tem);
548 #else
549 info_exists = Qnil;
550 #endif
551
552 if (!NILP (lib_src_exists) || !NILP (info_exists))
553 {
554 tem = Fexpand_file_name (build_string ("../etc"), dir);
555 etc_exists = Ffile_exists_p (tem);
556 if (!NILP (etc_exists))
557 {
558 tem = Fexpand_file_name (build_string (".."), dir);
559 Vinstallation_directory
560 = Ffile_name_as_directory (tem);
561 break;
562 }
563 }
564
565 /* If the Emacs executable is actually a link,
566 next try the dir that the link points into. */
567 tem = Ffile_symlink_p (name);
568 if (!NILP (tem))
569 {
570 name = Fexpand_file_name (tem, dir);
571 dir = Ffile_name_directory (name);
572 }
573 else
574 break;
575 }
576 }
577
578 Vcommand_line_args = Qnil;
579
580 for (i = argc - 1; i >= 0; i--)
581 {
582 if (i == 0 || i > skip_args)
583 Vcommand_line_args
584 = Fcons (build_string (argv[i]), Vcommand_line_args);
585 }
586
587 unbind_to (count, Qnil);
588 }
589
590 DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0,
591 doc: /* Return the program name that was used to run Emacs.
592 Any directory names are omitted. */)
593 ()
594 {
595 return Fcopy_sequence (Vinvocation_name);
596 }
597
598 DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
599 0, 0, 0,
600 doc: /* Return the directory name in which the Emacs executable was located. */)
601 ()
602 {
603 return Fcopy_sequence (Vinvocation_directory);
604 }
605
606 \f
607 #ifdef VMS
608 #ifdef LINK_CRTL_SHARE
609 #ifdef SHARABLE_LIB_BUG
610 extern noshare char **environ;
611 #endif /* SHARABLE_LIB_BUG */
612 #endif /* LINK_CRTL_SHARE */
613 #endif /* VMS */
614
615 #ifdef HAVE_TZSET
616 /* A valid but unlikely value for the TZ environment value.
617 It is OK (though a bit slower) if the user actually chooses this value. */
618 static char dump_tz[] = "UtC0";
619 #endif
620
621 #ifndef ORDINARY_LINK
622 /* We don't include crtbegin.o and crtend.o in the link,
623 so these functions and variables might be missed.
624 Provide dummy definitions to avoid error.
625 (We don't have any real constructors or destructors.) */
626 #ifdef __GNUC__
627 #ifndef GCC_CTORS_IN_LIBC
628 void __do_global_ctors ()
629 {}
630 void __do_global_ctors_aux ()
631 {}
632 void __do_global_dtors ()
633 {}
634 /* GNU/Linux has a bug in its library; avoid an error. */
635 #ifndef GNU_LINUX
636 char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
637 #endif
638 char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
639 #endif /* GCC_CTORS_IN_LIBC */
640 void __main ()
641 {}
642 #endif /* __GNUC__ */
643 #endif /* ORDINARY_LINK */
644
645 /* Test whether the next argument in ARGV matches SSTR or a prefix of
646 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
647 (the argument is supposed to have a value) store in *VALPTR either
648 the next argument or the portion of this one after the equal sign.
649 ARGV is read starting at position *SKIPPTR; this index is advanced
650 by the number of arguments used.
651
652 Too bad we can't just use getopt for all of this, but we don't have
653 enough information to do it right. */
654
655 static int
656 argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr)
657 char **argv;
658 int argc;
659 char *sstr;
660 char *lstr;
661 int minlen;
662 char **valptr;
663 int *skipptr;
664 {
665 char *p = NULL;
666 int arglen;
667 char *arg;
668
669 /* Don't access argv[argc]; give up in advance. */
670 if (argc <= *skipptr + 1)
671 return 0;
672
673 arg = argv[*skipptr+1];
674 if (arg == NULL)
675 return 0;
676 if (strcmp (arg, sstr) == 0)
677 {
678 if (valptr != NULL)
679 {
680 *valptr = argv[*skipptr+2];
681 *skipptr += 2;
682 }
683 else
684 *skipptr += 1;
685 return 1;
686 }
687 arglen = (valptr != NULL && (p = index (arg, '=')) != NULL
688 ? p - arg : strlen (arg));
689 if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0)
690 return 0;
691 else if (valptr == NULL)
692 {
693 *skipptr += 1;
694 return 1;
695 }
696 else if (p != NULL)
697 {
698 *valptr = p+1;
699 *skipptr += 1;
700 return 1;
701 }
702 else if (argv[*skipptr+2] != NULL)
703 {
704 *valptr = argv[*skipptr+2];
705 *skipptr += 2;
706 return 1;
707 }
708 else
709 {
710 return 0;
711 }
712 }
713
714 #ifdef DOUG_LEA_MALLOC
715
716 /* malloc can be invoked even before main (e.g. by the dynamic
717 linker), so the dumped malloc state must be restored as early as
718 possible using this special hook. */
719
720 static void
721 malloc_initialize_hook ()
722 {
723 #ifndef USE_CRT_DLL
724 extern char **environ;
725 #endif
726
727 if (initialized)
728 {
729 if (!malloc_using_checking)
730 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
731 ignored if the heap to be restored was constructed without
732 malloc checking. Can't use unsetenv, since that calls malloc. */
733 {
734 char **p;
735
736 for (p = environ; p && *p; p++)
737 if (strncmp (*p, "MALLOC_CHECK_=", 14) == 0)
738 {
739 do
740 *p = p[1];
741 while (*++p);
742 break;
743 }
744 }
745
746 malloc_set_state (malloc_state_ptr);
747 free (malloc_state_ptr);
748 }
749 else
750 {
751 if (my_heap_start == 0)
752 my_heap_start = sbrk (0);
753 malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL;
754 }
755 }
756
757 void (*__malloc_initialize_hook) () = malloc_initialize_hook;
758
759 #endif /* DOUG_LEA_MALLOC */
760
761
762 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
763 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
764
765 /* This function is used to determine an address to which bug report should
766 be sent. */
767
768 char *
769 bug_reporting_address ()
770 {
771 int count = 0;
772 Lisp_Object temp;
773 char *string;
774
775 temp = Fsymbol_value (intern ("emacs-version"));
776
777 /* When `emacs-version' is invalid, use normal address. */
778 if (!STRINGP(temp))
779 return REPORT_EMACS_BUG_ADDRESS;
780
781 string = SDATA (temp);
782
783 /* Count dots in `emacs-version'. */
784 while (*string)
785 {
786 if (*string == '.')
787 count++;
788 string++;
789 }
790
791 /* When `emacs-version' has at least three dots, it is development or
792 pretest version of Emacs. */
793 return count >= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS : REPORT_EMACS_BUG_ADDRESS;
794 }
795
796
797 /* ARGSUSED */
798 int
799 main (argc, argv
800 #ifdef VMS
801 , envp
802 #endif
803 )
804 int argc;
805 char **argv;
806 #ifdef VMS
807 char **envp;
808 #endif
809 {
810 #if GC_MARK_STACK
811 Lisp_Object dummy;
812 #endif
813 char stack_bottom_variable;
814 int do_initial_setlocale;
815 int skip_args = 0;
816 #ifndef USE_CRT_DLL
817 extern int errno;
818 #endif
819 #ifdef HAVE_SETRLIMIT
820 struct rlimit rlim;
821 #endif
822 int no_loadup = 0;
823 char *junk = 0;
824
825 #if GC_MARK_STACK
826 extern Lisp_Object *stack_base;
827 stack_base = &dummy;
828 #endif
829
830 if (!initialized)
831 {
832 extern char my_endbss[];
833 extern char *my_endbss_static;
834
835 if (my_heap_start == 0)
836 my_heap_start = sbrk (0);
837
838 heap_bss_diff = (char *)my_heap_start - max (my_endbss, my_endbss_static);
839 }
840
841 #ifdef LINUX_SBRK_BUG
842 __sbrk (1);
843 #endif
844
845 #ifdef RUN_TIME_REMAP
846 if (initialized)
847 run_time_remap (argv[0]);
848 #endif
849
850 #ifdef MAC_OSX
851 if (!initialized)
852 unexec_init_emacs_zone ();
853 #endif
854
855 sort_args (argc, argv);
856 argc = 0;
857 while (argv[argc]) argc++;
858
859 if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args)
860 /* We don't know the version number unless this is a dumped Emacs.
861 So ignore --version otherwise. */
862 && initialized)
863 {
864 Lisp_Object tem;
865 tem = Fsymbol_value (intern ("emacs-version"));
866 if (!STRINGP (tem))
867 {
868 fprintf (stderr, "Invalid value of `emacs-version'\n");
869 exit (1);
870 }
871 else
872 {
873 printf ("GNU Emacs %s\n", SDATA (tem));
874 printf ("Copyright (C) 2004 Free Software Foundation, Inc.\n");
875 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
876 printf ("You may redistribute copies of Emacs\n");
877 printf ("under the terms of the GNU General Public License.\n");
878 printf ("For more information about these matters, ");
879 printf ("see the file named COPYING.\n");
880 exit (0);
881 }
882 }
883
884 #ifdef HAVE_PERSONALITY_LINUX32
885 /* See if there is a gap between the end of BSS and the heap.
886 In that case, set personality and exec ourself again. */
887 if (!initialized
888 && (strcmp (argv[argc-1], "dump") == 0
889 || strcmp (argv[argc-1], "bootstrap") == 0)
890 && heap_bss_diff > MAX_HEAP_BSS_DIFF)
891 {
892 if (! getenv ("EMACS_HEAP_EXEC"))
893 {
894 /* Set this so we only do this once. */
895 putenv("EMACS_HEAP_EXEC=true");
896 personality (PER_LINUX32);
897 execvp (argv[0], argv);
898
899 /* If the exec fails, try to dump anyway. */
900 perror ("execvp");
901 }
902 }
903 #endif /* HAVE_PERSONALITY_LINUX32 */
904
905
906 /* Map in shared memory, if we are using that. */
907 #ifdef HAVE_SHM
908 if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args))
909 {
910 map_in_data (0);
911 /* The shared memory was just restored, which clobbered this. */
912 skip_args = 1;
913 }
914 else
915 {
916 map_in_data (1);
917 /* The shared memory was just restored, which clobbered this. */
918 skip_args = 0;
919 }
920 #endif
921
922 #ifdef NeXT
923 {
924 extern int malloc_cookie;
925 /* This helps out unexnext.c. */
926 if (initialized)
927 if (malloc_jumpstart (malloc_cookie) != 0)
928 printf ("malloc jumpstart failed!\n");
929 }
930 #endif /* NeXT */
931
932 #ifdef MAC_OSX
933 /* Skip process serial number passed in the form -psn_x_y as
934 command-line argument. */
935 if (argc > skip_args + 1 && strncmp (argv[skip_args+1], "-psn_", 5) == 0)
936 skip_args++;
937 #endif /* MAC_OSX */
938
939 #ifdef VMS
940 /* If -map specified, map the data file in. */
941 {
942 char *file;
943 if (argmatch (argv, argc, "-map", "--map-data", 3, &file, &skip_args))
944 mapin_data (file);
945 }
946
947 #ifdef LINK_CRTL_SHARE
948 #ifdef SHARABLE_LIB_BUG
949 /* Bletcherous shared libraries! */
950 if (!stdin)
951 stdin = fdopen (0, "r");
952 if (!stdout)
953 stdout = fdopen (1, "w");
954 if (!stderr)
955 stderr = fdopen (2, "w");
956 if (!environ)
957 environ = envp;
958 #endif /* SHARABLE_LIB_BUG */
959 #endif /* LINK_CRTL_SHARE */
960 #endif /* VMS */
961
962 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
963 /* Extend the stack space available.
964 Don't do that if dumping, since some systems (e.g. DJGPP)
965 might define a smaller stack limit at that time. */
966 if (1
967 #ifndef CANNOT_DUMP
968 && (!noninteractive || initialized)
969 #endif
970 && !getrlimit (RLIMIT_STACK, &rlim))
971 {
972 long newlim;
973 extern int re_max_failures;
974 /* Approximate the amount regex.c needs per unit of re_max_failures. */
975 int ratio = 20 * sizeof (char *);
976 /* Then add 33% to cover the size of the smaller stacks that regex.c
977 successively allocates and discards, on its way to the maximum. */
978 ratio += ratio / 3;
979 /* Add in some extra to cover
980 what we're likely to use for other reasons. */
981 newlim = re_max_failures * ratio + 200000;
982 #ifdef __NetBSD__
983 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
984 stack allocation routine for new process that the allocation
985 fails if stack limit is not on page boundary. So, round up the
986 new limit to page boundary. */
987 newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize();
988 #endif
989 if (newlim > rlim.rlim_max)
990 {
991 newlim = rlim.rlim_max;
992 /* Don't let regex.c overflow the stack we have. */
993 re_max_failures = (newlim - 200000) / ratio;
994 }
995 if (rlim.rlim_cur < newlim)
996 rlim.rlim_cur = newlim;
997
998 setrlimit (RLIMIT_STACK, &rlim);
999 }
1000 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
1001
1002 /* Record (approximately) where the stack begins. */
1003 stack_bottom = &stack_bottom_variable;
1004
1005 #ifdef USG_SHARED_LIBRARIES
1006 if (bss_end)
1007 brk ((void *)bss_end);
1008 #endif
1009
1010 clearerr (stdin);
1011
1012 #ifndef SYSTEM_MALLOC
1013 /* Arrange to get warning messages as memory fills up. */
1014 memory_warnings (0, malloc_warning);
1015
1016 /* Call malloc at least once, to run the initial __malloc_hook.
1017 Also call realloc and free for consistency. */
1018 free (realloc (malloc (4), 4));
1019
1020 /* Arrange to disable interrupt input inside malloc etc. */
1021 uninterrupt_malloc ();
1022 #endif /* not SYSTEM_MALLOC */
1023
1024 #if defined (MSDOS) || defined (WINDOWSNT)
1025 /* We do all file input/output as binary files. When we need to translate
1026 newlines, we do that manually. */
1027 _fmode = O_BINARY;
1028 #endif /* MSDOS || WINDOWSNT */
1029
1030 #ifdef MSDOS
1031 #if __DJGPP__ >= 2
1032 if (!isatty (fileno (stdin)))
1033 setmode (fileno (stdin), O_BINARY);
1034 if (!isatty (fileno (stdout)))
1035 {
1036 fflush (stdout);
1037 setmode (fileno (stdout), O_BINARY);
1038 }
1039 #else /* not __DJGPP__ >= 2 */
1040 (stdin)->_flag &= ~_IOTEXT;
1041 (stdout)->_flag &= ~_IOTEXT;
1042 (stderr)->_flag &= ~_IOTEXT;
1043 #endif /* not __DJGPP__ >= 2 */
1044 #endif /* MSDOS */
1045
1046 #ifdef SET_EMACS_PRIORITY
1047 if (emacs_priority)
1048 nice (emacs_priority);
1049 setuid (getuid ());
1050 #endif /* SET_EMACS_PRIORITY */
1051
1052 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
1053 The build procedure uses this while dumping, to ensure that the
1054 dumped Emacs does not have its system locale tables initialized,
1055 as that might cause screwups when the dumped Emacs starts up. */
1056 {
1057 char *lc_all = getenv ("LC_ALL");
1058 do_initial_setlocale = ! lc_all || strcmp (lc_all, "C");
1059 }
1060
1061 /* Set locale now, so that initial error messages are localized properly.
1062 fixup_locale must wait until later, since it builds strings. */
1063 if (do_initial_setlocale)
1064 setlocale (LC_ALL, "");
1065
1066 #ifdef EXTRA_INITIALIZE
1067 EXTRA_INITIALIZE;
1068 #endif
1069
1070 inhibit_window_system = 0;
1071
1072 /* Handle the -t switch, which specifies filename to use as terminal. */
1073 while (1)
1074 {
1075 char *term;
1076 if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
1077 {
1078 int result;
1079 emacs_close (0);
1080 emacs_close (1);
1081 result = emacs_open (term, O_RDWR, 0);
1082 if (result < 0)
1083 {
1084 char *errstring = strerror (errno);
1085 fprintf (stderr, "%s: %s: %s\n", argv[0], term, errstring);
1086 exit (1);
1087 }
1088 dup (0);
1089 if (! isatty (0))
1090 {
1091 fprintf (stderr, "%s: %s: not a tty\n", argv[0], term);
1092 exit (1);
1093 }
1094 fprintf (stderr, "Using %s\n", term);
1095 #ifdef HAVE_WINDOW_SYSTEM
1096 inhibit_window_system = 1; /* -t => -nw */
1097 #endif
1098 }
1099 else
1100 break;
1101 }
1102
1103 /* Command line option --no-windows is deprecated and thus not mentioned
1104 in the manual and usage informations. */
1105 if (argmatch (argv, argc, "-nw", "--no-window-system", 6, NULL, &skip_args)
1106 || argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args))
1107 inhibit_window_system = 1;
1108
1109 /* Handle the -batch switch, which means don't do interactive display. */
1110 noninteractive = 0;
1111 if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args))
1112 noninteractive = 1;
1113 if (argmatch (argv, argc, "-script", "--script", 3, &junk, &skip_args))
1114 {
1115 noninteractive = 1; /* Set batch mode. */
1116 /* Convert --script to -l, un-skip it, and sort again so that -l will be
1117 handled in proper sequence. */
1118 argv[skip_args - 1] = "-l";
1119 skip_args -= 2;
1120 sort_args (argc, argv);
1121 }
1122
1123 /* Handle the --help option, which gives a usage message. */
1124 if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
1125 {
1126 printf (USAGE1, argv[0], USAGE2);
1127 printf (USAGE3);
1128 printf (USAGE4, bug_reporting_address ());
1129 exit (0);
1130 }
1131
1132 if (! noninteractive)
1133 {
1134 #ifdef BSD_PGRPS
1135 if (initialized)
1136 {
1137 inherited_pgroup = EMACS_GETPGRP (0);
1138 setpgrp (0, getpid ());
1139 }
1140 #else
1141 #if defined (USG5) && defined (INTERRUPT_INPUT)
1142 setpgrp ();
1143 #endif
1144 #endif
1145 }
1146
1147 init_signals ();
1148
1149 /* Don't catch SIGHUP if dumping. */
1150 if (1
1151 #ifndef CANNOT_DUMP
1152 && initialized
1153 #endif
1154 )
1155 {
1156 sigblock (sigmask (SIGHUP));
1157 /* In --batch mode, don't catch SIGHUP if already ignored.
1158 That makes nohup work. */
1159 if (! noninteractive
1160 || signal (SIGHUP, SIG_IGN) != SIG_IGN)
1161 signal (SIGHUP, fatal_error_signal);
1162 sigunblock (sigmask (SIGHUP));
1163 }
1164
1165 if (
1166 #ifndef CANNOT_DUMP
1167 ! noninteractive || initialized
1168 #else
1169 1
1170 #endif
1171 )
1172 {
1173 /* Don't catch these signals in batch mode if dumping.
1174 On some machines, this sets static data that would make
1175 signal fail to work right when the dumped Emacs is run. */
1176 signal (SIGQUIT, fatal_error_signal);
1177 signal (SIGILL, fatal_error_signal);
1178 signal (SIGTRAP, fatal_error_signal);
1179 #ifdef SIGUSR1
1180 signal (SIGUSR1, handle_USR1_signal);
1181 #ifdef SIGUSR2
1182 signal (SIGUSR2, handle_USR2_signal);
1183 #endif
1184 #endif
1185 #ifdef SIGABRT
1186 signal (SIGABRT, fatal_error_signal);
1187 #endif
1188 #ifdef SIGHWE
1189 signal (SIGHWE, fatal_error_signal);
1190 #endif
1191 #ifdef SIGPRE
1192 signal (SIGPRE, fatal_error_signal);
1193 #endif
1194 #ifdef SIGORE
1195 signal (SIGORE, fatal_error_signal);
1196 #endif
1197 #ifdef SIGUME
1198 signal (SIGUME, fatal_error_signal);
1199 #endif
1200 #ifdef SIGDLK
1201 signal (SIGDLK, fatal_error_signal);
1202 #endif
1203 #ifdef SIGCPULIM
1204 signal (SIGCPULIM, fatal_error_signal);
1205 #endif
1206 #ifdef SIGIOT
1207 /* This is missing on some systems - OS/2, for example. */
1208 signal (SIGIOT, fatal_error_signal);
1209 #endif
1210 #ifdef SIGEMT
1211 signal (SIGEMT, fatal_error_signal);
1212 #endif
1213 signal (SIGFPE, fatal_error_signal);
1214 #ifdef SIGBUS
1215 signal (SIGBUS, fatal_error_signal);
1216 #endif
1217 signal (SIGSEGV, fatal_error_signal);
1218 #ifdef SIGSYS
1219 signal (SIGSYS, fatal_error_signal);
1220 #endif
1221 signal (SIGTERM, fatal_error_signal);
1222 #ifdef SIGXCPU
1223 signal (SIGXCPU, fatal_error_signal);
1224 #endif
1225 #ifdef SIGXFSZ
1226 signal (SIGXFSZ, fatal_error_signal);
1227 #endif /* SIGXFSZ */
1228
1229 #ifdef SIGDANGER
1230 /* This just means available memory is getting low. */
1231 signal (SIGDANGER, memory_warning_signal);
1232 #endif
1233
1234 #ifdef AIX
1235 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1236 signal (SIGXCPU, fatal_error_signal);
1237 #ifndef _I386
1238 signal (SIGIOINT, fatal_error_signal);
1239 #endif
1240 signal (SIGGRANT, fatal_error_signal);
1241 signal (SIGRETRACT, fatal_error_signal);
1242 signal (SIGSOUND, fatal_error_signal);
1243 signal (SIGMSG, fatal_error_signal);
1244 #endif /* AIX */
1245 }
1246
1247 noninteractive1 = noninteractive;
1248
1249 /* Perform basic initializations (not merely interning symbols). */
1250
1251 if (!initialized)
1252 {
1253 init_alloc_once ();
1254 init_obarray ();
1255 init_eval_once ();
1256 init_character_once ();
1257 init_charset_once ();
1258 init_coding_once ();
1259 init_syntax_once (); /* Create standard syntax table. */
1260 init_category_once (); /* Create standard category table. */
1261 /* Must be done before init_buffer. */
1262 init_casetab_once ();
1263 init_buffer_once (); /* Create buffer table and some buffers. */
1264 init_minibuf_once (); /* Create list of minibuffers. */
1265 /* Must precede init_window_once. */
1266
1267 /* Call syms_of_xfaces before init_window_once because that
1268 function creates Vterminal_frame. Termcap frames now use
1269 faces, and the face implementation uses some symbols as
1270 face names. */
1271 syms_of_xfaces ();
1272 /* Call syms_of_keyboard before init_window_once because
1273 keyboard sets up symbols that include some face names that
1274 the X support will want to use. This can happen when
1275 CANNOT_DUMP is defined. */
1276 syms_of_keyboard ();
1277
1278 #ifdef MAC_OS8
1279 /* init_window_once calls make_terminal_frame which on Mac OS
1280 creates a full-fledge output_mac type frame. This does not
1281 work correctly before syms_of_textprop, syms_of_macfns,
1282 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1283 syms_of_frame, mac_initialize, and init_keyboard have already
1284 been called. */
1285 syms_of_textprop ();
1286 syms_of_macfns ();
1287 syms_of_ccl ();
1288 syms_of_fontset ();
1289 syms_of_macterm ();
1290 syms_of_macmenu ();
1291 syms_of_data ();
1292 syms_of_search ();
1293 syms_of_frame ();
1294
1295 mac_initialize ();
1296 init_keyboard ();
1297 #endif
1298
1299 init_window_once (); /* Init the window system. */
1300 init_fileio_once (); /* Must precede any path manipulation. */
1301 #ifdef HAVE_WINDOW_SYSTEM
1302 init_fringe_once (); /* Swap bitmaps if necessary. */
1303 #endif /* HAVE_WINDOW_SYSTEM */
1304 }
1305
1306 init_alloc ();
1307
1308 if (do_initial_setlocale)
1309 {
1310 fixup_locale ();
1311 Vsystem_messages_locale = Vprevious_system_messages_locale;
1312 Vsystem_time_locale = Vprevious_system_time_locale;
1313 }
1314
1315 init_eval ();
1316 init_data ();
1317 #ifdef CLASH_DETECTION
1318 init_filelock ();
1319 #endif
1320 init_atimer ();
1321 running_asynch_code = 0;
1322
1323 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1324 but not while dumping. */
1325 if (1)
1326 {
1327 int inhibit_unibyte = 0;
1328
1329 /* --multibyte overrides EMACS_UNIBYTE. */
1330 if (argmatch (argv, argc, "-no-unibyte", "--no-unibyte", 4, NULL, &skip_args)
1331 || argmatch (argv, argc, "-multibyte", "--multibyte", 4, NULL, &skip_args)
1332 /* Ignore EMACS_UNIBYTE before dumping. */
1333 || (!initialized && noninteractive))
1334 inhibit_unibyte = 1;
1335
1336 /* --unibyte requests that we set up to do everything with single-byte
1337 buffers and strings. We need to handle this before calling
1338 init_lread, init_editfns and other places that generate Lisp strings
1339 from text in the environment. */
1340 /* Actually this shouldn't be needed as of 20.4 in a generally
1341 unibyte environment. As handa says, environment values
1342 aren't now decoded; also existing buffers are now made
1343 unibyte during startup if .emacs sets unibyte. Tested with
1344 8-bit data in environment variables and /etc/passwd, setting
1345 unibyte and Latin-1 in .emacs. -- Dave Love */
1346 if (argmatch (argv, argc, "-unibyte", "--unibyte", 4, NULL, &skip_args)
1347 || argmatch (argv, argc, "-no-multibyte", "--no-multibyte", 4, NULL, &skip_args)
1348 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte))
1349 {
1350 Lisp_Object old_log_max;
1351 Lisp_Object symbol, tail;
1352
1353 symbol = intern ("default-enable-multibyte-characters");
1354 Fset (symbol, Qnil);
1355
1356 if (initialized)
1357 {
1358 /* Erase pre-dump messages in *Messages* now so no abort. */
1359 old_log_max = Vmessage_log_max;
1360 XSETFASTINT (Vmessage_log_max, 0);
1361 message_dolog ("", 0, 1, 0);
1362 Vmessage_log_max = old_log_max;
1363 }
1364
1365 for (tail = Vbuffer_alist; CONSP (tail);
1366 tail = XCDR (tail))
1367 {
1368 Lisp_Object buffer;
1369
1370 buffer = Fcdr (XCAR (tail));
1371 /* Make a multibyte buffer unibyte. */
1372 if (BUF_Z_BYTE (XBUFFER (buffer)) > BUF_Z (XBUFFER (buffer)))
1373 {
1374 struct buffer *current = current_buffer;
1375
1376 set_buffer_temp (XBUFFER (buffer));
1377 Fset_buffer_multibyte (Qnil);
1378 set_buffer_temp (current);
1379 }
1380 }
1381 }
1382 }
1383
1384 no_loadup
1385 = argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args);
1386
1387
1388 #ifdef HAVE_X_WINDOWS
1389 /* Stupid kludge to catch command-line display spec. We can't
1390 handle this argument entirely in window system dependent code
1391 because we don't even know which window system dependent code
1392 to run until we've recognized this argument. */
1393 {
1394 char *displayname = 0;
1395 int count_before = skip_args;
1396
1397 /* Skip any number of -d options, but only use the last one. */
1398 while (1)
1399 {
1400 int count_before_this = skip_args;
1401
1402 if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args))
1403 display_arg = 1;
1404 else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args))
1405 display_arg = 1;
1406 else
1407 break;
1408
1409 count_before = count_before_this;
1410 }
1411
1412 /* If we have the form --display=NAME,
1413 convert it into -d name.
1414 This requires inserting a new element into argv. */
1415 if (displayname != 0 && skip_args - count_before == 1)
1416 {
1417 char **new = (char **) xmalloc (sizeof (char *) * (argc + 2));
1418 int j;
1419
1420 for (j = 0; j < count_before + 1; j++)
1421 new[j] = argv[j];
1422 new[count_before + 1] = "-d";
1423 new[count_before + 2] = displayname;
1424 for (j = count_before + 2; j <argc; j++)
1425 new[j + 1] = argv[j];
1426 argv = new;
1427 argc++;
1428 }
1429 /* Change --display to -d, when its arg is separate. */
1430 else if (displayname != 0 && skip_args > count_before
1431 && argv[count_before + 1][1] == '-')
1432 argv[count_before + 1] = "-d";
1433
1434 /* Don't actually discard this arg. */
1435 skip_args = count_before;
1436 }
1437 #endif
1438
1439 /* argmatch must not be used after here,
1440 except when bulding temacs
1441 because the -d argument has not been skipped in skip_args. */
1442
1443 #ifdef MSDOS
1444 /* Call early 'cause init_environment needs it. */
1445 init_dosfns ();
1446 /* Set defaults for several environment variables. */
1447 if (initialized)
1448 init_environment (argc, argv, skip_args);
1449 else
1450 tzset ();
1451 #endif /* MSDOS */
1452
1453 #ifdef WINDOWSNT
1454 globals_of_w32 ();
1455 /* Initialize environment from registry settings. */
1456 init_environment (argv);
1457 init_ntproc (); /* must precede init_editfns. */
1458 #endif
1459
1460 #ifdef HAVE_CARBON
1461 if (initialized)
1462 init_mac_osx_environment ();
1463 #endif
1464
1465 /* egetenv is a pretty low-level facility, which may get called in
1466 many circumstances; it seems flimsy to put off initializing it
1467 until calling init_callproc. */
1468 set_process_environment ();
1469 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1470 if this is not done. Do it after set_process_environment so that we
1471 don't pollute Vprocess_environment. */
1472 /* Setting LANG here will defeat the startup locale processing... */
1473 #ifdef AIX3_2
1474 putenv ("LANG=C");
1475 #endif
1476
1477 init_buffer (); /* Init default directory of main buffer. */
1478
1479 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1480 init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */
1481
1482 if (initialized)
1483 {
1484 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1485 Lisp_Object old_log_max;
1486 old_log_max = Vmessage_log_max;
1487 XSETFASTINT (Vmessage_log_max, 0);
1488 message_dolog ("", 0, 1, 0);
1489 Vmessage_log_max = old_log_max;
1490 }
1491
1492 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1493 init_lread ();
1494
1495 /* Intern the names of all standard functions and variables;
1496 define standard keys. */
1497
1498 if (!initialized)
1499 {
1500 /* The basic levels of Lisp must come first. */
1501 /* And data must come first of all
1502 for the sake of symbols like error-message. */
1503 #ifndef MAC_OS8
1504 /* Called before init_window_once for Mac OS Classic. */
1505 syms_of_data ();
1506 #endif
1507 syms_of_alloc ();
1508 syms_of_chartab ();
1509 syms_of_lread ();
1510 syms_of_print ();
1511 syms_of_eval ();
1512 syms_of_fns ();
1513 syms_of_floatfns ();
1514
1515 syms_of_abbrev ();
1516 syms_of_buffer ();
1517 syms_of_bytecode ();
1518 syms_of_callint ();
1519 syms_of_casefiddle ();
1520 syms_of_casetab ();
1521 syms_of_callproc ();
1522 syms_of_category ();
1523 #ifndef MAC_OS8
1524 /* Called before init_window_once for Mac OS Classic. */
1525 syms_of_ccl ();
1526 #endif
1527 syms_of_character ();
1528 syms_of_charset ();
1529 syms_of_cmds ();
1530 #ifndef NO_DIR_LIBRARY
1531 syms_of_dired ();
1532 #endif /* not NO_DIR_LIBRARY */
1533 syms_of_display ();
1534 syms_of_doc ();
1535 syms_of_editfns ();
1536 syms_of_emacs ();
1537 syms_of_fileio ();
1538 syms_of_coding (); /* This should be after syms_of_fileio. */
1539 #ifdef CLASH_DETECTION
1540 syms_of_filelock ();
1541 #endif /* CLASH_DETECTION */
1542 syms_of_indent ();
1543 syms_of_insdel ();
1544 syms_of_keymap ();
1545 syms_of_macros ();
1546 syms_of_marker ();
1547 syms_of_minibuf ();
1548 syms_of_process ();
1549 #ifndef MAC_OS8
1550 /* Called before init_window_once for Mac OS Classic. */
1551 syms_of_search ();
1552 syms_of_frame ();
1553 #endif
1554 syms_of_syntax ();
1555 syms_of_term ();
1556 syms_of_undo ();
1557 #ifdef HAVE_SOUND
1558 syms_of_sound ();
1559 #endif
1560 #ifndef MAC_OS8
1561 /* Called before init_window_once for Mac OS Classic. */
1562 syms_of_textprop ();
1563 #endif
1564 syms_of_composite ();
1565 #ifdef VMS
1566 syms_of_vmsproc ();
1567 #endif /* VMS */
1568 #ifdef WINDOWSNT
1569 syms_of_ntproc ();
1570 #endif /* WINDOWSNT */
1571 syms_of_window ();
1572 syms_of_xdisp ();
1573 #ifdef HAVE_WINDOW_SYSTEM
1574 syms_of_fringe ();
1575 syms_of_image ();
1576 #endif /* HAVE_WINDOW_SYSTEM */
1577 #ifdef HAVE_X_WINDOWS
1578 syms_of_xterm ();
1579 syms_of_xfns ();
1580 syms_of_fontset ();
1581 #ifdef HAVE_X_SM
1582 syms_of_xsmfns ();
1583 #endif
1584 #ifdef HAVE_X11
1585 syms_of_xselect ();
1586 #endif
1587 #endif /* HAVE_X_WINDOWS */
1588
1589 #ifdef HAVE_MENUS
1590 #ifndef HAVE_NTGUI
1591 #ifndef MAC_OS
1592 /* Called before init_window_once for Mac OS Classic. */
1593 syms_of_xmenu ();
1594 #endif
1595 #endif
1596 #endif
1597
1598 #ifdef HAVE_NTGUI
1599 syms_of_w32term ();
1600 syms_of_w32fns ();
1601 syms_of_w32select ();
1602 syms_of_w32menu ();
1603 syms_of_fontset ();
1604 #endif /* HAVE_NTGUI */
1605
1606 #ifdef HAVE_CARBON
1607 syms_of_macterm ();
1608 syms_of_macfns ();
1609 syms_of_macmenu ();
1610 syms_of_fontset ();
1611 #endif /* HAVE_CARBON */
1612
1613 #ifdef SYMS_SYSTEM
1614 SYMS_SYSTEM;
1615 #endif
1616
1617 #ifdef SYMS_MACHINE
1618 SYMS_MACHINE;
1619 #endif
1620
1621 keys_of_casefiddle ();
1622 keys_of_cmds ();
1623 keys_of_buffer ();
1624 keys_of_keyboard ();
1625 keys_of_keymap ();
1626 keys_of_minibuf ();
1627 keys_of_window ();
1628 }
1629 else
1630 {
1631 /*
1632 Initialization that must be done even if the global variable
1633 initialized is non zero
1634 */
1635 #ifdef HAVE_NTGUI
1636 globals_of_w32fns ();
1637 globals_of_w32menu ();
1638 #endif /* end #ifdef HAVE_NTGUI */
1639 }
1640
1641 init_charset ();
1642
1643 if (!noninteractive)
1644 {
1645 #ifdef VMS
1646 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1647 #endif /* VMS */
1648 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1649 }
1650 #ifndef MAC_OS8
1651 /* Called before init_window_once for Mac OS Classic. */
1652 init_keyboard (); /* This too must precede init_sys_modes. */
1653 #endif
1654 #ifdef VMS
1655 init_vmsproc (); /* And this too. */
1656 #endif /* VMS */
1657 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1658 init_fns ();
1659 init_xdisp ();
1660 #ifdef HAVE_WINDOW_SYSTEM
1661 init_fringe ();
1662 init_image ();
1663 #endif /* HAVE_WINDOW_SYSTEM */
1664 init_macros ();
1665 init_editfns ();
1666 init_floatfns ();
1667 #ifdef VMS
1668 init_vmsfns ();
1669 #endif /* VMS */
1670 init_process ();
1671 #ifdef HAVE_SOUND
1672 init_sound ();
1673 #endif
1674 init_window ();
1675
1676 if (!initialized)
1677 {
1678 char *file;
1679 /* Handle -l loadup, args passed by Makefile. */
1680 if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args))
1681 Vtop_level = Fcons (intern ("load"),
1682 Fcons (build_string (file), Qnil));
1683 /* Unless next switch is -nl, load "loadup.el" first thing. */
1684 if (! no_loadup)
1685 Vtop_level = Fcons (intern ("load"),
1686 Fcons (build_string ("loadup.el"), Qnil));
1687 }
1688
1689 if (initialized)
1690 {
1691 #ifdef HAVE_TZSET
1692 {
1693 /* If the execution TZ happens to be the same as the dump TZ,
1694 change it to some other value and then change it back,
1695 to force the underlying implementation to reload the TZ info.
1696 This is needed on implementations that load TZ info from files,
1697 since the TZ file contents may differ between dump and execution. */
1698 char *tz = getenv ("TZ");
1699 if (tz && !strcmp (tz, dump_tz))
1700 {
1701 ++*tz;
1702 tzset ();
1703 --*tz;
1704 }
1705 }
1706 #endif
1707 }
1708
1709 /* Set up for profiling. This is known to work on FreeBSD and
1710 GNU/Linux. It might work on some other systems too. Give it a
1711 try and tell us if it works on your system. To compile for
1712 profiling use something like `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1713 #if defined (__FreeBSD__) || defined (__linux)
1714 #ifdef PROFILING
1715 if (initialized)
1716 {
1717 extern void _mcleanup ();
1718 extern char etext;
1719 extern void safe_bcopy ();
1720 extern void dump_opcode_frequencies ();
1721
1722 atexit (_mcleanup);
1723 /* This uses safe_bcopy because that function comes first in the
1724 Emacs executable. It might be better to use something that
1725 gives the start of the text segment, but start_of_text is not
1726 defined on all systems now. */
1727 monstartup (safe_bcopy, &etext);
1728 }
1729 else
1730 moncontrol (0);
1731 #endif
1732 #endif
1733
1734 initialized = 1;
1735
1736 #ifdef LOCALTIME_CACHE
1737 /* Some versions of localtime have a bug. They cache the value of the time
1738 zone rather than looking it up every time. Since localtime() is
1739 called to bolt the undumping time into the undumped emacs, this
1740 results in localtime ignoring the TZ environment variable.
1741 This flushes the new TZ value into localtime. */
1742 tzset ();
1743 #endif /* defined (LOCALTIME_CACHE) */
1744
1745 /* Enter editor command loop. This never returns. */
1746 Frecursive_edit ();
1747 /* NOTREACHED */
1748 return 0;
1749 }
1750 \f
1751 /* Sort the args so we can find the most important ones
1752 at the beginning of argv. */
1753
1754 /* First, here's a table of all the standard options. */
1755
1756 struct standard_args
1757 {
1758 char *name;
1759 char *longname;
1760 int priority;
1761 int nargs;
1762 };
1763
1764 struct standard_args standard_args[] =
1765 {
1766 { "-version", "--version", 150, 0 },
1767 #ifdef HAVE_SHM
1768 { "-nl", "--no-shared-memory", 140, 0 },
1769 #endif
1770 #ifdef VMS
1771 { "-map", "--map-data", 130, 0 },
1772 #endif
1773 { "-t", "--terminal", 120, 1 },
1774 { "-nw", "--no-window-system", 110, 0 },
1775 { "-nw", "--no-windows", 110, 0 },
1776 { "-batch", "--batch", 100, 0 },
1777 { "-script", "--script", 100, 1 },
1778 { "-help", "--help", 90, 0 },
1779 { "-no-unibyte", "--no-unibyte", 83, 0 },
1780 { "-multibyte", "--multibyte", 82, 0 },
1781 { "-unibyte", "--unibyte", 81, 0 },
1782 { "-no-multibyte", "--no-multibyte", 80, 0 },
1783 { "-nl", "--no-loadup", 70, 0 },
1784 /* -d must come last before the options handled in startup.el. */
1785 { "-d", "--display", 60, 1 },
1786 { "-display", 0, 60, 1 },
1787 /* Now for the options handled in startup.el. */
1788 { "-q", "--no-init-file", 50, 0 },
1789 { "-no-init-file", 0, 50, 0 },
1790 { "-no-site-file", "--no-site-file", 40, 0 },
1791 { "-no-splash", "--no-splash", 40, 0 },
1792 { "-u", "--user", 30, 1 },
1793 { "-user", 0, 30, 1 },
1794 { "-debug-init", "--debug-init", 20, 0 },
1795 { "-i", "--icon-type", 15, 0 },
1796 { "-itype", 0, 15, 0 },
1797 { "-iconic", "--iconic", 15, 0 },
1798 { "-bg", "--background-color", 10, 1 },
1799 { "-background", 0, 10, 1 },
1800 { "-fg", "--foreground-color", 10, 1 },
1801 { "-foreground", 0, 10, 1 },
1802 { "-bd", "--border-color", 10, 1 },
1803 { "-bw", "--border-width", 10, 1 },
1804 { "-ib", "--internal-border", 10, 1 },
1805 { "-ms", "--mouse-color", 10, 1 },
1806 { "-cr", "--cursor-color", 10, 1 },
1807 { "-fn", "--font", 10, 1 },
1808 { "-font", 0, 10, 1 },
1809 { "-fs", "--fullscreen", 10, 0 },
1810 { "-fw", "--fullwidth", 10, 0 },
1811 { "-fh", "--fullheight", 10, 0 },
1812 { "-g", "--geometry", 10, 1 },
1813 { "-geometry", 0, 10, 1 },
1814 { "-T", "--title", 10, 1 },
1815 { "-title", 0, 10, 1 },
1816 { "-name", "--name", 10, 1 },
1817 { "-xrm", "--xrm", 10, 1 },
1818 { "-r", "--reverse-video", 5, 0 },
1819 { "-rv", 0, 5, 0 },
1820 { "-reverse", 0, 5, 0 },
1821 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1822 { "-vb", "--vertical-scroll-bars", 5, 0 },
1823 { "-color", "--color", 5, 0},
1824 /* These have the same priority as ordinary file name args,
1825 so they are not reordered with respect to those. */
1826 { "-L", "--directory", 0, 1 },
1827 { "-directory", 0, 0, 1 },
1828 { "-l", "--load", 0, 1 },
1829 { "-load", 0, 0, 1 },
1830 { "-f", "--funcall", 0, 1 },
1831 { "-funcall", 0, 0, 1 },
1832 { "-eval", "--eval", 0, 1 },
1833 { "-execute", "--execute", 0, 1 },
1834 { "-find-file", "--find-file", 0, 1 },
1835 { "-visit", "--visit", 0, 1 },
1836 { "-file", "--file", 0, 1 },
1837 { "-insert", "--insert", 0, 1 },
1838 /* This should be processed after ordinary file name args and the like. */
1839 { "-kill", "--kill", -10, 0 },
1840 };
1841
1842 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1843 so that the highest priority ones come first.
1844 Do not change the order of elements of equal priority.
1845 If an option takes an argument, keep it and its argument together.
1846
1847 If an option that takes no argument appears more
1848 than once, eliminate all but one copy of it. */
1849
1850 static void
1851 sort_args (argc, argv)
1852 int argc;
1853 char **argv;
1854 {
1855 char **new = (char **) xmalloc (sizeof (char *) * argc);
1856 /* For each element of argv,
1857 the corresponding element of options is:
1858 0 for an option that takes no arguments,
1859 1 for an option that takes one argument, etc.
1860 -1 for an ordinary non-option argument. */
1861 int *options = (int *) xmalloc (sizeof (int) * argc);
1862 int *priority = (int *) xmalloc (sizeof (int) * argc);
1863 int to = 1;
1864 int incoming_used = 1;
1865 int from;
1866 int i;
1867
1868 /* Categorize all the options,
1869 and figure out which argv elts are option arguments. */
1870 for (from = 1; from < argc; from++)
1871 {
1872 options[from] = -1;
1873 priority[from] = 0;
1874 if (argv[from][0] == '-')
1875 {
1876 int match, thislen;
1877 char *equals;
1878
1879 /* If we have found "--", don't consider
1880 any more arguments as options. */
1881 if (argv[from][1] == '-' && argv[from][2] == 0)
1882 {
1883 /* Leave the "--", and everything following it, at the end. */
1884 for (; from < argc; from++)
1885 {
1886 priority[from] = -100;
1887 options[from] = -1;
1888 }
1889 break;
1890 }
1891
1892 /* Look for a match with a known old-fashioned option. */
1893 for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1894 if (!strcmp (argv[from], standard_args[i].name))
1895 {
1896 options[from] = standard_args[i].nargs;
1897 priority[from] = standard_args[i].priority;
1898 if (from + standard_args[i].nargs >= argc)
1899 fatal ("Option `%s' requires an argument\n", argv[from]);
1900 from += standard_args[i].nargs;
1901 goto done;
1902 }
1903
1904 /* Look for a match with a known long option.
1905 MATCH is -1 if no match so far, -2 if two or more matches so far,
1906 >= 0 (the table index of the match) if just one match so far. */
1907 if (argv[from][1] == '-')
1908 {
1909 match = -1;
1910 thislen = strlen (argv[from]);
1911 equals = index (argv[from], '=');
1912 if (equals != 0)
1913 thislen = equals - argv[from];
1914
1915 for (i = 0;
1916 i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1917 if (standard_args[i].longname
1918 && !strncmp (argv[from], standard_args[i].longname,
1919 thislen))
1920 {
1921 if (match == -1)
1922 match = i;
1923 else
1924 match = -2;
1925 }
1926
1927 /* If we found exactly one match, use that. */
1928 if (match >= 0)
1929 {
1930 options[from] = standard_args[match].nargs;
1931 priority[from] = standard_args[match].priority;
1932 /* If --OPTION=VALUE syntax is used,
1933 this option uses just one argv element. */
1934 if (equals != 0)
1935 options[from] = 0;
1936 if (from + options[from] >= argc)
1937 fatal ("Option `%s' requires an argument\n", argv[from]);
1938 from += options[from];
1939 }
1940 }
1941 done: ;
1942 }
1943 }
1944
1945 /* Copy the arguments, in order of decreasing priority, to NEW. */
1946 new[0] = argv[0];
1947 while (incoming_used < argc)
1948 {
1949 int best = -1;
1950 int best_priority = -9999;
1951
1952 /* Find the highest priority remaining option.
1953 If several have equal priority, take the first of them. */
1954 for (from = 1; from < argc; from++)
1955 {
1956 if (argv[from] != 0 && priority[from] > best_priority)
1957 {
1958 best_priority = priority[from];
1959 best = from;
1960 }
1961 /* Skip option arguments--they are tied to the options. */
1962 if (options[from] > 0)
1963 from += options[from];
1964 }
1965
1966 if (best < 0)
1967 abort ();
1968
1969 /* Copy the highest priority remaining option, with its args, to NEW.
1970 Unless it is a duplicate of the previous one. */
1971 if (! (options[best] == 0
1972 && ! strcmp (new[to - 1], argv[best])))
1973 {
1974 new[to++] = argv[best];
1975 for (i = 0; i < options[best]; i++)
1976 new[to++] = argv[best + i + 1];
1977 }
1978
1979 incoming_used += 1 + (options[best] > 0 ? options[best] : 0);
1980
1981 /* Clear out this option in ARGV. */
1982 argv[best] = 0;
1983 for (i = 0; i < options[best]; i++)
1984 argv[best + i + 1] = 0;
1985 }
1986
1987 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1988 while (to < argc)
1989 new[to++] = 0;
1990
1991 bcopy (new, argv, sizeof (char *) * argc);
1992
1993 free (options);
1994 free (new);
1995 free (priority);
1996 }
1997 \f
1998 DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P",
1999 doc: /* Exit the Emacs job and kill it.
2000 If ARG is an integer, return ARG as the exit program code.
2001 If ARG is a string, stuff it as keyboard input.
2002
2003 The value of `kill-emacs-hook', if not void,
2004 is a list of functions (of no args),
2005 all of which are called before Emacs is actually killed. */)
2006 (arg)
2007 Lisp_Object arg;
2008 {
2009 struct gcpro gcpro1;
2010
2011 GCPRO1 (arg);
2012
2013 if (feof (stdin))
2014 arg = Qt;
2015
2016 if (!NILP (Vrun_hooks) && !noninteractive)
2017 call1 (Vrun_hooks, intern ("kill-emacs-hook"));
2018
2019 UNGCPRO;
2020
2021 /* Is it really necessary to do this deassign
2022 when we are going to exit anyway? */
2023 /* #ifdef VMS
2024 stop_vms_input ();
2025 #endif */
2026
2027 shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil);
2028
2029 /* If we have an auto-save list file,
2030 kill it because we are exiting Emacs deliberately (not crashing).
2031 Do it after shut_down_emacs, which does an auto-save. */
2032 if (STRINGP (Vauto_save_list_file_name))
2033 unlink (SDATA (Vauto_save_list_file_name));
2034
2035 exit (INTEGERP (arg) ? XINT (arg)
2036 #ifdef VMS
2037 : 1
2038 #else
2039 : 0
2040 #endif
2041 );
2042 /* NOTREACHED */
2043 }
2044
2045
2046 /* Perform an orderly shutdown of Emacs. Autosave any modified
2047 buffers, kill any child processes, clean up the terminal modes (if
2048 we're in the foreground), and other stuff like that. Don't perform
2049 any redisplay; this may be called when Emacs is shutting down in
2050 the background, or after its X connection has died.
2051
2052 If SIG is a signal number, print a message for it.
2053
2054 This is called by fatal signal handlers, X protocol error handlers,
2055 and Fkill_emacs. */
2056
2057 void
2058 shut_down_emacs (sig, no_x, stuff)
2059 int sig, no_x;
2060 Lisp_Object stuff;
2061 {
2062 /* Prevent running of hooks from now on. */
2063 Vrun_hooks = Qnil;
2064
2065 /* Don't update display from now on. */
2066 Vinhibit_redisplay = Qt;
2067
2068 /* If we are controlling the terminal, reset terminal modes. */
2069 #ifdef EMACS_HAVE_TTY_PGRP
2070 {
2071 int pgrp = EMACS_GETPGRP (0);
2072
2073 int tpgrp;
2074 if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1
2075 && tpgrp == pgrp)
2076 {
2077 fflush (stdout);
2078 reset_sys_modes ();
2079 if (sig && sig != SIGTERM)
2080 fprintf (stderr, "Fatal error (%d)", sig);
2081 }
2082 }
2083 #else
2084 fflush (stdout);
2085 reset_sys_modes ();
2086 #endif
2087
2088 stuff_buffered_input (stuff);
2089
2090 kill_buffer_processes (Qnil);
2091 Fdo_auto_save (Qt, Qnil);
2092
2093 #ifdef CLASH_DETECTION
2094 unlock_all_files ();
2095 #endif
2096
2097 #ifdef VMS
2098 kill_vms_processes ();
2099 #endif
2100
2101 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2102 #ifdef HAVE_X_WINDOWS
2103 /* It's not safe to call intern here. Maybe we are crashing. */
2104 if (!noninteractive && SYMBOLP (Vwindow_system)
2105 && SCHARS (SYMBOL_NAME (Vwindow_system)) == 1
2106 && SREF (SYMBOL_NAME (Vwindow_system), 0) == 'x'
2107 && ! no_x)
2108 Fx_close_current_connection ();
2109 #endif /* HAVE_X_WINDOWS */
2110 #endif
2111
2112 #ifdef SIGIO
2113 /* There is a tendency for a SIGIO signal to arrive within exit,
2114 and cause a SIGHUP because the input descriptor is already closed. */
2115 unrequest_sigio ();
2116 signal (SIGIO, SIG_IGN);
2117 #endif
2118
2119 #ifdef WINDOWSNT
2120 term_ntproc ();
2121 #endif
2122
2123 /* Do this only if terminating normally, we want glyph matrices
2124 etc. in a core dump. */
2125 if (sig == 0 || sig == SIGTERM)
2126 {
2127 check_glyph_memory ();
2128 check_message_stack ();
2129 }
2130
2131 #ifdef MSDOS
2132 dos_cleanup ();
2133 #endif
2134 }
2135
2136
2137 \f
2138 #ifndef CANNOT_DUMP
2139
2140 #ifdef HAVE_SHM
2141
2142 DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0,
2143 doc: /* Dump current state of Emacs into data file FILENAME.
2144 This function exists on systems that use HAVE_SHM. */)
2145 (filename)
2146 Lisp_Object filename;
2147 {
2148 extern char my_edata[];
2149 Lisp_Object tem;
2150
2151 check_pure_size ();
2152 CHECK_STRING (filename);
2153 filename = Fexpand_file_name (filename, Qnil);
2154
2155 tem = Vpurify_flag;
2156 Vpurify_flag = Qnil;
2157
2158 fflush (stdout);
2159 /* Tell malloc where start of impure now is. */
2160 /* Also arrange for warnings when nearly out of space. */
2161 #ifndef SYSTEM_MALLOC
2162 memory_warnings (my_edata, malloc_warning);
2163 #endif
2164 map_out_data (SDATA (filename));
2165
2166 Vpurify_flag = tem;
2167
2168 return Qnil;
2169 }
2170
2171 #else /* not HAVE_SHM */
2172
2173 DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0,
2174 doc: /* Dump current state of Emacs into executable file FILENAME.
2175 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2176 This is used in the file `loadup.el' when building Emacs.
2177
2178 You must run Emacs in batch mode in order to dump it. */)
2179 (filename, symfile)
2180 Lisp_Object filename, symfile;
2181 {
2182 extern char my_edata[];
2183 Lisp_Object tem;
2184 Lisp_Object symbol;
2185 int count = SPECPDL_INDEX ();
2186
2187 check_pure_size ();
2188
2189 if (! noninteractive)
2190 error ("Dumping Emacs works only in batch mode");
2191
2192 if (heap_bss_diff > MAX_HEAP_BSS_DIFF)
2193 {
2194 fprintf (stderr, "**************************************************\n");
2195 fprintf (stderr, "Warning: Your system has a gap between BSS and the\n");
2196 fprintf (stderr, "heap. This usually means that exec-shield or\n");
2197 fprintf (stderr, "something similar is in effect. The dump may fail\n");
2198 fprintf (stderr, "because of this. See the section about exec-shield\n");
2199 fprintf (stderr, "in etc/PROBLEMS for more information.\n");
2200 fprintf (stderr, "**************************************************\n");
2201 }
2202
2203 /* Bind `command-line-processed' to nil before dumping,
2204 so that the dumped Emacs will process its command line
2205 and set up to work with X windows if appropriate. */
2206 symbol = intern ("command-line-processed");
2207 specbind (symbol, Qnil);
2208
2209 CHECK_STRING (filename);
2210 filename = Fexpand_file_name (filename, Qnil);
2211 if (!NILP (symfile))
2212 {
2213 CHECK_STRING (symfile);
2214 if (SCHARS (symfile))
2215 symfile = Fexpand_file_name (symfile, Qnil);
2216 }
2217
2218 tem = Vpurify_flag;
2219 Vpurify_flag = Qnil;
2220
2221 #ifdef HAVE_TZSET
2222 set_time_zone_rule (dump_tz);
2223 #ifndef LOCALTIME_CACHE
2224 /* Force a tz reload, since set_time_zone_rule doesn't. */
2225 tzset ();
2226 #endif
2227 #endif
2228
2229 fflush (stdout);
2230 #ifdef VMS
2231 mapout_data (SDATA (filename));
2232 #else
2233 /* Tell malloc where start of impure now is. */
2234 /* Also arrange for warnings when nearly out of space. */
2235 #ifndef SYSTEM_MALLOC
2236 #ifndef WINDOWSNT
2237 /* On Windows, this was done before dumping, and that once suffices.
2238 Meanwhile, my_edata is not valid on Windows. */
2239 memory_warnings (my_edata, malloc_warning);
2240 #endif /* not WINDOWSNT */
2241 #endif
2242 #ifdef DOUG_LEA_MALLOC
2243 malloc_state_ptr = malloc_get_state ();
2244 #endif
2245
2246 #ifdef USE_MMAP_FOR_BUFFERS
2247 mmap_set_vars (0);
2248 #endif
2249 unexec (SDATA (filename),
2250 !NILP (symfile) ? SDATA (symfile) : 0, my_edata, 0, 0);
2251 #ifdef USE_MMAP_FOR_BUFFERS
2252 mmap_set_vars (1);
2253 #endif
2254 #ifdef DOUG_LEA_MALLOC
2255 free (malloc_state_ptr);
2256 #endif
2257 #endif /* not VMS */
2258
2259 Vpurify_flag = tem;
2260
2261 return unbind_to (count, Qnil);
2262 }
2263
2264 #endif /* not HAVE_SHM */
2265
2266 #endif /* not CANNOT_DUMP */
2267 \f
2268 #if HAVE_SETLOCALE
2269 /* Recover from setlocale (LC_ALL, ""). */
2270 void
2271 fixup_locale ()
2272 {
2273 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2274 so that numbers are read and printed properly for Emacs Lisp. */
2275 setlocale (LC_NUMERIC, "C");
2276 }
2277
2278 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2279 DESIRED_LOCALE. */
2280 static void
2281 synchronize_locale (category, plocale, desired_locale)
2282 int category;
2283 Lisp_Object *plocale;
2284 Lisp_Object desired_locale;
2285 {
2286 if (! EQ (*plocale, desired_locale))
2287 {
2288 *plocale = desired_locale;
2289 setlocale (category, (STRINGP (desired_locale)
2290 ? (char *)(SDATA (desired_locale))
2291 : ""));
2292 }
2293 }
2294
2295 /* Set system time locale to match Vsystem_time_locale, if possible. */
2296 void
2297 synchronize_system_time_locale ()
2298 {
2299 synchronize_locale (LC_TIME, &Vprevious_system_time_locale,
2300 Vsystem_time_locale);
2301 }
2302
2303 /* Set system messages locale to match Vsystem_messages_locale, if
2304 possible. */
2305 void
2306 synchronize_system_messages_locale ()
2307 {
2308 #ifdef LC_MESSAGES
2309 synchronize_locale (LC_MESSAGES, &Vprevious_system_messages_locale,
2310 Vsystem_messages_locale);
2311 #endif
2312 }
2313 #endif /* HAVE_SETLOCALE */
2314 \f
2315 #ifndef SEPCHAR
2316 #define SEPCHAR ':'
2317 #endif
2318
2319 Lisp_Object
2320 decode_env_path (evarname, defalt)
2321 char *evarname, *defalt;
2322 {
2323 register char *path, *p;
2324 Lisp_Object lpath, element, tem;
2325
2326 /* It's okay to use getenv here, because this function is only used
2327 to initialize variables when Emacs starts up, and isn't called
2328 after that. */
2329 if (evarname != 0)
2330 path = (char *) getenv (evarname);
2331 else
2332 path = 0;
2333 if (!path)
2334 path = defalt;
2335 #ifdef DOS_NT
2336 /* Ensure values from the environment use the proper directory separator. */
2337 if (path)
2338 {
2339 p = alloca (strlen (path) + 1);
2340 strcpy (p, path);
2341 path = p;
2342
2343 if ('/' == DIRECTORY_SEP)
2344 dostounix_filename (path);
2345 else
2346 unixtodos_filename (path);
2347 }
2348 #endif
2349 lpath = Qnil;
2350 while (1)
2351 {
2352 p = index (path, SEPCHAR);
2353 if (!p) p = path + strlen (path);
2354 element = (p - path ? make_string (path, p - path)
2355 : build_string ("."));
2356
2357 /* Add /: to the front of the name
2358 if it would otherwise be treated as magic. */
2359 tem = Ffind_file_name_handler (element, Qt);
2360
2361 /* However, if the handler says "I'm safe",
2362 don't bother adding /:. */
2363 if (SYMBOLP (tem))
2364 {
2365 Lisp_Object prop;
2366 prop = Fget (tem, intern ("safe-magic"));
2367 if (! NILP (prop))
2368 tem = Qnil;
2369 }
2370
2371 if (! NILP (tem))
2372 element = concat2 (build_string ("/:"), element);
2373
2374 lpath = Fcons (element, lpath);
2375 if (*p)
2376 path = p + 1;
2377 else
2378 break;
2379 }
2380 return Fnreverse (lpath);
2381 }
2382
2383 void
2384 syms_of_emacs ()
2385 {
2386 Qfile_name_handler_alist = intern ("file-name-handler-alist");
2387 staticpro (&Qfile_name_handler_alist);
2388
2389 #ifndef CANNOT_DUMP
2390 #ifdef HAVE_SHM
2391 defsubr (&Sdump_emacs_data);
2392 #else
2393 defsubr (&Sdump_emacs);
2394 #endif
2395 #endif
2396
2397 defsubr (&Skill_emacs);
2398
2399 defsubr (&Sinvocation_name);
2400 defsubr (&Sinvocation_directory);
2401
2402 DEFVAR_LISP ("command-line-args", &Vcommand_line_args,
2403 doc: /* Args passed by shell to Emacs, as a list of strings.
2404 Many arguments are deleted from the list as they are processed. */);
2405
2406 DEFVAR_LISP ("system-type", &Vsystem_type,
2407 doc: /* Value is symbol indicating type of operating system you are using. */);
2408 Vsystem_type = intern (SYSTEM_TYPE);
2409
2410 DEFVAR_LISP ("system-configuration", &Vsystem_configuration,
2411 doc: /* Value is string indicating configuration Emacs was built for.
2412 On MS-Windows, the value reflects the OS flavor and version on which
2413 Emacs is running. */);
2414 Vsystem_configuration = build_string (EMACS_CONFIGURATION);
2415
2416 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options,
2417 doc: /* String containing the configuration options Emacs was built with. */);
2418 Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS);
2419
2420 DEFVAR_BOOL ("noninteractive", &noninteractive1,
2421 doc: /* Non-nil means Emacs is running without interactive terminal. */);
2422
2423 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook,
2424 doc: /* Hook to be run when kill-emacs is called.
2425 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2426 in other similar situations), functions placed on this hook should not
2427 expect to be able to interact with the user. To ask for confirmation,
2428 see `kill-emacs-query-functions' instead.
2429
2430 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2431 Vkill_emacs_hook = Qnil;
2432
2433 empty_string = build_string ("");
2434 staticpro (&empty_string);
2435
2436 DEFVAR_INT ("emacs-priority", &emacs_priority,
2437 doc: /* Priority for Emacs to run at.
2438 This value is effective only if set before Emacs is dumped,
2439 and only if the Emacs executable is installed with setuid to permit
2440 it to change priority. (Emacs sets its uid back to the real uid.)
2441 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2442 before you compile Emacs, to enable the code for this feature. */);
2443 emacs_priority = 0;
2444
2445 DEFVAR_LISP ("path-separator", &Vpath_separator,
2446 doc: /* The directory separator in search paths, as a string. */);
2447 {
2448 char c = SEPCHAR;
2449 Vpath_separator = make_string (&c, 1);
2450 }
2451
2452 DEFVAR_LISP ("invocation-name", &Vinvocation_name,
2453 doc: /* The program name that was used to run Emacs.
2454 Any directory names are omitted. */);
2455
2456 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory,
2457 doc: /* The directory in which the Emacs executable was found, to run it.
2458 The value is nil if that directory's name is not known. */);
2459
2460 DEFVAR_LISP ("installation-directory", &Vinstallation_directory,
2461 doc: /* A directory within which to look for the `lib-src' and `etc' directories.
2462 This is non-nil when we can't find those directories in their standard
2463 installed locations, but we can find them
2464 near where the Emacs executable was found. */);
2465 Vinstallation_directory = Qnil;
2466
2467 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale,
2468 doc: /* System locale for messages. */);
2469 Vsystem_messages_locale = Qnil;
2470
2471 DEFVAR_LISP ("previous-system-messages-locale",
2472 &Vprevious_system_messages_locale,
2473 doc: /* Most recently used system locale for messages. */);
2474 Vprevious_system_messages_locale = Qnil;
2475
2476 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale,
2477 doc: /* System locale for time. */);
2478 Vsystem_time_locale = Qnil;
2479
2480 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale,
2481 doc: /* Most recently used system locale for time. */);
2482 Vprevious_system_time_locale = Qnil;
2483 }
2484
2485 /* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2486 (do not change this comment) */