Merge from emacs-24; up to 2012-04-26T03:04:36Z!cyd@gnu.org
[bpt/emacs.git] / src / emacs.c
1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2012
4 Free Software Foundation, Inc.
5
6 This file is part of GNU Emacs.
7
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
12
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
20
21
22 #include <config.h>
23 #include <signal.h>
24 #include <errno.h>
25 #include <stdio.h>
26
27 #include <sys/types.h>
28 #include <sys/file.h>
29 #include <setjmp.h>
30 #include <unistd.h>
31
32 #include "lisp.h"
33
34 #ifdef WINDOWSNT
35 #include <fcntl.h>
36 #include <windows.h> /* just for w32.h */
37 #include "w32.h"
38 #include "w32heap.h" /* for prototype of sbrk */
39 #endif
40
41 #ifdef NS_IMPL_GNUSTEP
42 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
43 #include <GNUstepBase/GSConfig.h>
44 #endif
45
46 #include "commands.h"
47 #include "intervals.h"
48 #include "character.h"
49 #include "buffer.h"
50 #include "window.h"
51
52 #include "systty.h"
53 #include "blockinput.h"
54 #include "syssignal.h"
55 #include "process.h"
56 #include "frame.h"
57 #include "termhooks.h"
58 #include "keyboard.h"
59 #include "keymap.h"
60
61 #ifdef HAVE_GNUTLS
62 #include "gnutls.h"
63 #endif
64
65 #ifdef HAVE_NS
66 #include "nsterm.h"
67 #endif
68
69 #if (defined PROFILING \
70 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
71 # include <sys/gmon.h>
72 extern void moncontrol (int mode);
73 #endif
74
75 #ifdef HAVE_X_WINDOWS
76 #include "xterm.h"
77 #endif
78
79 #ifdef HAVE_SETLOCALE
80 #include <locale.h>
81 #endif
82
83 #ifdef HAVE_SETRLIMIT
84 #include <sys/time.h>
85 #include <sys/resource.h>
86 #endif
87
88 #ifdef HAVE_PERSONALITY_LINUX32
89 #include <sys/personality.h>
90 #endif
91
92 #ifndef O_RDWR
93 #define O_RDWR 2
94 #endif
95
96 #ifdef HAVE_SETPGID
97 #if !defined (USG)
98 #undef setpgrp
99 #define setpgrp setpgid
100 #endif
101 #endif
102
103 static const char emacs_version[] = VERSION;
104 static const char emacs_copyright[] = "Copyright (C) 2012 Free Software Foundation, Inc.";
105
106 /* Make these values available in GDB, which doesn't see macros. */
107
108 #if USE_LSB_TAG
109 int gdb_use_lsb EXTERNALLY_VISIBLE = 1;
110 #else
111 int gdb_use_lsb EXTERNALLY_VISIBLE = 0;
112 #endif
113 #ifndef CHECK_LISP_OBJECT_TYPE
114 int gdb_use_struct EXTERNALLY_VISIBLE = 0;
115 #else
116 int gdb_use_struct EXTERNALLY_VISIBLE = 1;
117 #endif
118 int gdb_valbits EXTERNALLY_VISIBLE = VALBITS;
119 int gdb_gctypebits EXTERNALLY_VISIBLE = GCTYPEBITS;
120 #if defined DATA_SEG_BITS && !USE_LSB_TAG
121 uintptr_t gdb_data_seg_bits EXTERNALLY_VISIBLE = DATA_SEG_BITS;
122 #else
123 uintptr_t gdb_data_seg_bits EXTERNALLY_VISIBLE = 0;
124 #endif
125 ptrdiff_t PVEC_FLAG EXTERNALLY_VISIBLE = PSEUDOVECTOR_FLAG;
126 ptrdiff_t gdb_array_mark_flag EXTERNALLY_VISIBLE = ARRAY_MARK_FLAG;
127 /* GDB might say "No enum type named pvec_type" if we don't have at
128 least one symbol with that type, and then xbacktrace could fail. */
129 enum pvec_type gdb_pvec_type EXTERNALLY_VISIBLE = PVEC_TYPE_MASK;
130
131 /* Empty lisp strings. To avoid having to build any others. */
132 Lisp_Object empty_unibyte_string, empty_multibyte_string;
133
134 /* Set nonzero after Emacs has started up the first time.
135 Prevents reinitialization of the Lisp world and keymaps
136 on subsequent starts. */
137 int initialized;
138
139 #ifdef DARWIN_OS
140 extern void unexec_init_emacs_zone (void);
141 #endif
142
143 #ifdef DOUG_LEA_MALLOC
144 /* Preserves a pointer to the memory allocated that copies that
145 static data inside glibc's malloc. */
146 static void *malloc_state_ptr;
147 /* From glibc, a routine that returns a copy of the malloc internal state. */
148 extern void *malloc_get_state (void);
149 /* From glibc, a routine that overwrites the malloc internal state. */
150 extern int malloc_set_state (void*);
151 /* Non-zero if the MALLOC_CHECK_ environment variable was set while
152 dumping. Used to work around a bug in glibc's malloc. */
153 static int malloc_using_checking;
154 #endif
155
156 Lisp_Object Qfile_name_handler_alist;
157
158 Lisp_Object Qrisky_local_variable;
159
160 Lisp_Object Qkill_emacs;
161
162 /* If non-zero, Emacs should not attempt to use a window-specific code,
163 but instead should use the virtual terminal under which it was started. */
164 int inhibit_window_system;
165
166 /* If non-zero, a filter or a sentinel is running. Tested to save the match
167 data on the first attempt to change it inside asynchronous code. */
168 int running_asynch_code;
169
170 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
171 /* If non-zero, -d was specified, meaning we're using some window system. */
172 int display_arg;
173 #endif
174
175 /* An address near the bottom of the stack.
176 Tells GC how to save a copy of the stack. */
177 char *stack_bottom;
178
179 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
180 /* The address where the heap starts (from the first sbrk (0) call). */
181 static void *my_heap_start;
182 #endif
183
184 #ifdef GNU_LINUX
185 /* The gap between BSS end and heap start as far as we can tell. */
186 static uprintmax_t heap_bss_diff;
187 #endif
188
189 /* Nonzero means running Emacs without interactive terminal. */
190 int noninteractive;
191
192 /* Nonzero means remove site-lisp directories from load-path. */
193 int no_site_lisp;
194
195 /* Name for the server started by the daemon.*/
196 static char *daemon_name;
197
198 /* Pipe used to send exit notification to the daemon parent at
199 startup. */
200 int daemon_pipe[2];
201
202 /* Save argv and argc. */
203 char **initial_argv;
204 int initial_argc;
205
206 static void sort_args (int argc, char **argv);
207 static void syms_of_emacs (void);
208
209 /* MSVC needs each string be shorter than 2048 bytes, so the usage
210 strings below are split to not overflow this limit. */
211 #define USAGE1 "\
212 Usage: %s [OPTION-OR-FILENAME]...\n\
213 \n\
214 Run Emacs, the extensible, customizable, self-documenting real-time\n\
215 display editor. The recommended way to start Emacs for normal editing\n\
216 is with no options at all.\n\
217 \n\
218 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
219 read the main documentation for these command-line arguments.\n\
220 \n\
221 Initialization options:\n\
222 \n\
223 --batch do not do interactive display; implies -q\n\
224 --chdir DIR change to directory DIR\n\
225 --daemon start a server in the background\n\
226 --debug-init enable Emacs Lisp debugger for init file\n\
227 --display, -d DISPLAY use X server DISPLAY\n\
228 --no-desktop do not load a saved desktop\n\
229 --no-init-file, -q load neither ~/.emacs nor default.el\n\
230 --no-shared-memory, -nl do not use shared memory\n\
231 --no-site-file do not load site-start.el\n\
232 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
233 --no-splash do not display a splash screen on startup\n\
234 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
235 --quick, -Q equivalent to:\n\
236 -q --no-site-file --no-site-lisp --no-splash\n\
237 --script FILE run FILE as an Emacs Lisp script\n\
238 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
239 --user, -u USER load ~USER/.emacs instead of your own\n\
240 \n%s"
241
242 #define USAGE2 "\
243 Action options:\n\
244 \n\
245 FILE visit FILE using find-file\n\
246 +LINE go to line LINE in next FILE\n\
247 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
248 --directory, -L DIR add DIR to variable load-path\n\
249 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
250 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
251 --file FILE visit FILE using find-file\n\
252 --find-file FILE visit FILE using find-file\n\
253 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
254 --insert FILE insert contents of FILE into current buffer\n\
255 --kill exit without asking for confirmation\n\
256 --load, -l FILE load Emacs Lisp FILE using the load function\n\
257 --visit FILE visit FILE using find-file\n\
258 \n"
259
260 #define USAGE3 "\
261 Display options:\n\
262 \n\
263 --background-color, -bg COLOR window background color\n\
264 --basic-display, -D disable many display features;\n\
265 used for debugging Emacs\n\
266 --border-color, -bd COLOR main border color\n\
267 --border-width, -bw WIDTH width of main border\n\
268 --color, --color=MODE override color mode for character terminals;\n\
269 MODE defaults to `auto', and\n\
270 can also be `never', `always',\n\
271 or a mode name like `ansi8'\n\
272 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
273 --font, -fn FONT default font; must be fixed-width\n\
274 --foreground-color, -fg COLOR window foreground color\n\
275 --fullheight, -fh make the first frame high as the screen\n\
276 --fullscreen, -fs make the first frame fullscreen\n\
277 --fullwidth, -fw make the first frame wide as the screen\n\
278 --maximized, -mm make the first frame maximized\n\
279 --geometry, -g GEOMETRY window geometry\n\
280 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
281 --iconic start Emacs in iconified state\n\
282 --internal-border, -ib WIDTH width between text and main border\n\
283 --line-spacing, -lsp PIXELS additional space to put between lines\n\
284 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
285 --name NAME title for initial Emacs frame\n\
286 --no-blinking-cursor, -nbc disable blinking cursor\n\
287 --reverse-video, -r, -rv switch foreground and background\n\
288 --title, -T TITLE title for initial Emacs frame\n\
289 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
290 --xrm XRESOURCES set additional X resources\n\
291 --parent-id XID set parent window\n\
292 --help display this help and exit\n\
293 --version output version information and exit\n\
294 \n"
295
296 #define USAGE4 "\
297 You can generally also specify long option names with a single -; for\n\
298 example, -batch as well as --batch. You can use any unambiguous\n\
299 abbreviation for a --option.\n\
300 \n\
301 Various environment variables and window system resources also affect\n\
302 Emacs' operation. See the main documentation.\n\
303 \n\
304 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
305 section of the Emacs manual or the file BUGS.\n"
306
307 \f
308 /* Signal code for the fatal signal that was received. */
309 static int fatal_error_code;
310
311 /* Nonzero if handling a fatal error already. */
312 int fatal_error_in_progress;
313
314 /* If non-null, call this function from fatal_error_signal before
315 committing suicide. */
316
317 static void (*fatal_error_signal_hook) (void);
318
319 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
320 /* When compiled with GTK and running under Gnome,
321 multiple threads may be created. Keep track of our main
322 thread to make sure signals are delivered to it (see syssignal.h). */
323
324 pthread_t main_thread;
325 #endif
326
327 #ifdef HAVE_NS
328 /* NS autrelease pool, for memory management. */
329 static void *ns_pool;
330 #endif
331
332
333
334 /* Handle bus errors, invalid instruction, etc. */
335 #ifndef FLOAT_CATCH_SIGILL
336 static
337 #endif
338 void
339 fatal_error_signal (int sig)
340 {
341 SIGNAL_THREAD_CHECK (sig);
342 fatal_error_code = sig;
343 signal (sig, SIG_DFL);
344
345 TOTALLY_UNBLOCK_INPUT;
346
347 /* If fatal error occurs in code below, avoid infinite recursion. */
348 if (! fatal_error_in_progress)
349 {
350 fatal_error_in_progress = 1;
351
352 if (sig == SIGTERM || sig == SIGHUP || sig == SIGINT)
353 Fkill_emacs (make_number (sig));
354
355 shut_down_emacs (sig, 0, Qnil);
356 }
357
358 /* Signal the same code; this time it will really be fatal.
359 Remember that since we're in a signal handler, the signal we're
360 going to send is probably blocked, so we have to unblock it if we
361 want to really receive it. */
362 #ifndef MSDOS
363 sigunblock (sigmask (fatal_error_code));
364 #endif
365
366 if (fatal_error_signal_hook)
367 fatal_error_signal_hook ();
368
369 kill (getpid (), fatal_error_code);
370 }
371
372 #ifdef SIGDANGER
373
374 /* Handler for SIGDANGER. */
375 void
376 memory_warning_signal (int sig)
377 {
378 signal (sig, memory_warning_signal);
379 SIGNAL_THREAD_CHECK (sig);
380
381 malloc_warning ("Operating system warns that virtual memory is running low.\n");
382
383 /* It might be unsafe to call do_auto_save now. */
384 force_auto_save_soon ();
385 }
386 #endif
387
388 /* We define abort, rather than using it from the library,
389 so that GDB can return from a breakpoint here.
390 MSDOS has its own definition in msdos.c. */
391
392 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
393
394 void
395 abort (void)
396 {
397 kill (getpid (), SIGABRT);
398 /* This shouldn't be executed, but it prevents a warning. */
399 exit (1);
400 }
401 #endif
402
403 \f
404 /* Code for dealing with Lisp access to the Unix command line. */
405
406 static void
407 init_cmdargs (int argc, char **argv, int skip_args)
408 {
409 register int i;
410 Lisp_Object name, dir, handler;
411 ptrdiff_t count = SPECPDL_INDEX ();
412 Lisp_Object raw_name;
413
414 initial_argv = argv;
415 initial_argc = argc;
416
417 raw_name = build_string (argv[0]);
418
419 /* Add /: to the front of the name
420 if it would otherwise be treated as magic. */
421 handler = Ffind_file_name_handler (raw_name, Qt);
422 if (! NILP (handler))
423 raw_name = concat2 (build_string ("/:"), raw_name);
424
425 Vinvocation_name = Ffile_name_nondirectory (raw_name);
426 Vinvocation_directory = Ffile_name_directory (raw_name);
427
428 /* If we got no directory in argv[0], search PATH to find where
429 Emacs actually came from. */
430 if (NILP (Vinvocation_directory))
431 {
432 Lisp_Object found;
433 int yes = openp (Vexec_path, Vinvocation_name,
434 Vexec_suffixes, &found, make_number (X_OK));
435 if (yes == 1)
436 {
437 /* Add /: to the front of the name
438 if it would otherwise be treated as magic. */
439 handler = Ffind_file_name_handler (found, Qt);
440 if (! NILP (handler))
441 found = concat2 (build_string ("/:"), found);
442 Vinvocation_directory = Ffile_name_directory (found);
443 }
444 }
445
446 if (!NILP (Vinvocation_directory)
447 && NILP (Ffile_name_absolute_p (Vinvocation_directory)))
448 /* Emacs was started with relative path, like ./emacs.
449 Make it absolute. */
450 Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil);
451
452 Vinstallation_directory = Qnil;
453
454 if (!NILP (Vinvocation_directory))
455 {
456 dir = Vinvocation_directory;
457 name = Fexpand_file_name (Vinvocation_name, dir);
458 while (1)
459 {
460 Lisp_Object tem, lib_src_exists;
461 Lisp_Object etc_exists, info_exists;
462
463 /* See if dir contains subdirs for use by Emacs.
464 Check for the ones that would exist in a build directory,
465 not including lisp and info. */
466 tem = Fexpand_file_name (build_string ("lib-src"), dir);
467 lib_src_exists = Ffile_exists_p (tem);
468
469 #ifdef MSDOS
470 /* MSDOS installations frequently remove lib-src, but we still
471 must set installation-directory, or else info won't find
472 its files (it uses the value of installation-directory). */
473 tem = Fexpand_file_name (build_string ("info"), dir);
474 info_exists = Ffile_exists_p (tem);
475 #else
476 info_exists = Qnil;
477 #endif
478
479 if (!NILP (lib_src_exists) || !NILP (info_exists))
480 {
481 tem = Fexpand_file_name (build_string ("etc"), dir);
482 etc_exists = Ffile_exists_p (tem);
483 if (!NILP (etc_exists))
484 {
485 Vinstallation_directory
486 = Ffile_name_as_directory (dir);
487 break;
488 }
489 }
490
491 /* See if dir's parent contains those subdirs. */
492 tem = Fexpand_file_name (build_string ("../lib-src"), dir);
493 lib_src_exists = Ffile_exists_p (tem);
494
495
496 #ifdef MSDOS
497 /* See the MSDOS commentary above. */
498 tem = Fexpand_file_name (build_string ("../info"), dir);
499 info_exists = Ffile_exists_p (tem);
500 #else
501 info_exists = Qnil;
502 #endif
503
504 if (!NILP (lib_src_exists) || !NILP (info_exists))
505 {
506 tem = Fexpand_file_name (build_string ("../etc"), dir);
507 etc_exists = Ffile_exists_p (tem);
508 if (!NILP (etc_exists))
509 {
510 tem = Fexpand_file_name (build_string (".."), dir);
511 Vinstallation_directory
512 = Ffile_name_as_directory (tem);
513 break;
514 }
515 }
516
517 /* If the Emacs executable is actually a link,
518 next try the dir that the link points into. */
519 tem = Ffile_symlink_p (name);
520 if (!NILP (tem))
521 {
522 name = Fexpand_file_name (tem, dir);
523 dir = Ffile_name_directory (name);
524 }
525 else
526 break;
527 }
528 }
529
530 Vcommand_line_args = Qnil;
531
532 for (i = argc - 1; i >= 0; i--)
533 {
534 if (i == 0 || i > skip_args)
535 /* For the moment, we keep arguments as is in unibyte strings.
536 They are decoded in the function command-line after we know
537 locale-coding-system. */
538 Vcommand_line_args
539 = Fcons (make_unibyte_string (argv[i], strlen (argv[i])),
540 Vcommand_line_args);
541 }
542
543 unbind_to (count, Qnil);
544 }
545
546 DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0,
547 doc: /* Return the program name that was used to run Emacs.
548 Any directory names are omitted. */)
549 (void)
550 {
551 return Fcopy_sequence (Vinvocation_name);
552 }
553
554 DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
555 0, 0, 0,
556 doc: /* Return the directory name in which the Emacs executable was located. */)
557 (void)
558 {
559 return Fcopy_sequence (Vinvocation_directory);
560 }
561
562 \f
563 #ifdef HAVE_TZSET
564 /* A valid but unlikely value for the TZ environment value.
565 It is OK (though a bit slower) if the user actually chooses this value. */
566 static char dump_tz[] = "UtC0";
567 #endif
568
569 #ifndef ORDINARY_LINK
570 /* We don't include crtbegin.o and crtend.o in the link,
571 so these functions and variables might be missed.
572 Provide dummy definitions to avoid error.
573 (We don't have any real constructors or destructors.) */
574 #ifdef __GNUC__
575
576 /* Define a dummy function F. Declare F too, to pacify gcc
577 -Wmissing-prototypes. */
578 #define DEFINE_DUMMY_FUNCTION(f) \
579 void f (void) EXTERNALLY_VISIBLE; void f (void) {}
580
581 #ifndef GCC_CTORS_IN_LIBC
582 DEFINE_DUMMY_FUNCTION (__do_global_ctors)
583 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux)
584 DEFINE_DUMMY_FUNCTION (__do_global_dtors)
585 /* GNU/Linux has a bug in its library; avoid an error. */
586 #ifndef GNU_LINUX
587 char * __CTOR_LIST__[2] EXTERNALLY_VISIBLE = { (char *) (-1), 0 };
588 #endif
589 char * __DTOR_LIST__[2] EXTERNALLY_VISIBLE = { (char *) (-1), 0 };
590 #endif /* GCC_CTORS_IN_LIBC */
591 DEFINE_DUMMY_FUNCTION (__main)
592 #endif /* __GNUC__ */
593 #endif /* ORDINARY_LINK */
594
595 /* Test whether the next argument in ARGV matches SSTR or a prefix of
596 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
597 (the argument is supposed to have a value) store in *VALPTR either
598 the next argument or the portion of this one after the equal sign.
599 ARGV is read starting at position *SKIPPTR; this index is advanced
600 by the number of arguments used.
601
602 Too bad we can't just use getopt for all of this, but we don't have
603 enough information to do it right. */
604
605 static int
606 argmatch (char **argv, int argc, const char *sstr, const char *lstr,
607 int minlen, char **valptr, int *skipptr)
608 {
609 char *p = NULL;
610 ptrdiff_t arglen;
611 char *arg;
612
613 /* Don't access argv[argc]; give up in advance. */
614 if (argc <= *skipptr + 1)
615 return 0;
616
617 arg = argv[*skipptr+1];
618 if (arg == NULL)
619 return 0;
620 if (strcmp (arg, sstr) == 0)
621 {
622 if (valptr != NULL)
623 {
624 *valptr = argv[*skipptr+2];
625 *skipptr += 2;
626 }
627 else
628 *skipptr += 1;
629 return 1;
630 }
631 arglen = (valptr != NULL && (p = strchr (arg, '=')) != NULL
632 ? p - arg : strlen (arg));
633 if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0)
634 return 0;
635 else if (valptr == NULL)
636 {
637 *skipptr += 1;
638 return 1;
639 }
640 else if (p != NULL)
641 {
642 *valptr = p+1;
643 *skipptr += 1;
644 return 1;
645 }
646 else if (argv[*skipptr+2] != NULL)
647 {
648 *valptr = argv[*skipptr+2];
649 *skipptr += 2;
650 return 1;
651 }
652 else
653 {
654 return 0;
655 }
656 }
657
658 #ifdef DOUG_LEA_MALLOC
659
660 /* malloc can be invoked even before main (e.g. by the dynamic
661 linker), so the dumped malloc state must be restored as early as
662 possible using this special hook. */
663
664 static void
665 malloc_initialize_hook (void)
666 {
667 #ifndef USE_CRT_DLL
668 extern char **environ;
669 #endif
670
671 if (initialized)
672 {
673 if (!malloc_using_checking)
674 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
675 ignored if the heap to be restored was constructed without
676 malloc checking. Can't use unsetenv, since that calls malloc. */
677 {
678 char **p;
679
680 for (p = environ; p && *p; p++)
681 if (strncmp (*p, "MALLOC_CHECK_=", 14) == 0)
682 {
683 do
684 *p = p[1];
685 while (*++p);
686 break;
687 }
688 }
689
690 malloc_set_state (malloc_state_ptr);
691 #ifndef XMALLOC_OVERRUN_CHECK
692 free (malloc_state_ptr);
693 #endif
694 }
695 else
696 {
697 if (my_heap_start == 0)
698 my_heap_start = sbrk (0);
699 malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL;
700 }
701 }
702
703 void (*__malloc_initialize_hook) (void) EXTERNALLY_VISIBLE = malloc_initialize_hook;
704
705 #endif /* DOUG_LEA_MALLOC */
706
707
708 /* ARGSUSED */
709 int
710 main (int argc, char **argv)
711 {
712 #if GC_MARK_STACK
713 Lisp_Object dummy;
714 #endif
715 char stack_bottom_variable;
716 int do_initial_setlocale;
717 int skip_args = 0;
718 #ifdef HAVE_SETRLIMIT
719 struct rlimit rlim;
720 #endif
721 int no_loadup = 0;
722 char *junk = 0;
723 char *dname_arg = 0;
724 #ifdef NS_IMPL_COCOA
725 char dname_arg2[80];
726 #endif
727 char *ch_to_dir;
728
729 #if GC_MARK_STACK
730 stack_base = &dummy;
731 #endif
732
733 #if defined (USE_GTK) && defined (G_SLICE_ALWAYS_MALLOC)
734 /* This is used by the Cygwin build. */
735 setenv ("G_SLICE", "always-malloc", 1);
736 #endif
737
738 #ifdef GNU_LINUX
739 if (!initialized)
740 {
741 extern char my_endbss[];
742 extern char *my_endbss_static;
743
744 if (my_heap_start == 0)
745 my_heap_start = sbrk (0);
746
747 heap_bss_diff = (char *)my_heap_start - max (my_endbss, my_endbss_static);
748 }
749 #endif
750
751 #ifdef RUN_TIME_REMAP
752 if (initialized)
753 run_time_remap (argv[0]);
754 #endif
755
756 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
757 #ifdef DARWIN_OS
758 if (!initialized)
759 unexec_init_emacs_zone ();
760 #endif
761
762 sort_args (argc, argv);
763 argc = 0;
764 while (argv[argc]) argc++;
765
766 if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args))
767 {
768 const char *version, *copyright;
769 if (initialized)
770 {
771 Lisp_Object tem, tem2;
772 tem = Fsymbol_value (intern_c_string ("emacs-version"));
773 tem2 = Fsymbol_value (intern_c_string ("emacs-copyright"));
774 if (!STRINGP (tem))
775 {
776 fprintf (stderr, "Invalid value of `emacs-version'\n");
777 exit (1);
778 }
779 if (!STRINGP (tem2))
780 {
781 fprintf (stderr, "Invalid value of `emacs-copyright'\n");
782 exit (1);
783 }
784 else
785 {
786 version = SSDATA (tem);
787 copyright = SSDATA (tem2);
788 }
789 }
790 else
791 {
792 version = emacs_version;
793 copyright = emacs_copyright;
794 }
795 printf ("GNU Emacs %s\n", version);
796 printf ("%s\n", copyright);
797 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
798 printf ("You may redistribute copies of Emacs\n");
799 printf ("under the terms of the GNU General Public License.\n");
800 printf ("For more information about these matters, ");
801 printf ("see the file named COPYING.\n");
802 exit (0);
803 }
804
805 if (argmatch (argv, argc, "-chdir", "--chdir", 4, &ch_to_dir, &skip_args))
806 if (chdir (ch_to_dir) == -1)
807 {
808 fprintf (stderr, "%s: Can't chdir to %s: %s\n",
809 argv[0], ch_to_dir, strerror (errno));
810 exit (1);
811 }
812
813
814 #ifdef HAVE_PERSONALITY_LINUX32
815 if (!initialized
816 && (strcmp (argv[argc-1], "dump") == 0
817 || strcmp (argv[argc-1], "bootstrap") == 0)
818 && ! getenv ("EMACS_HEAP_EXEC"))
819 {
820 static char heapexec[] = "EMACS_HEAP_EXEC=true";
821 /* Set this so we only do this once. */
822 putenv (heapexec);
823
824 /* A flag to turn off address randomization which is introduced
825 in linux kernel shipped with fedora core 4 */
826 #define ADD_NO_RANDOMIZE 0x0040000
827 personality (PER_LINUX32 | ADD_NO_RANDOMIZE);
828 #undef ADD_NO_RANDOMIZE
829
830 execvp (argv[0], argv);
831
832 /* If the exec fails, try to dump anyway. */
833 perror ("execvp");
834 }
835 #endif /* HAVE_PERSONALITY_LINUX32 */
836
837 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
838 /* Extend the stack space available.
839 Don't do that if dumping, since some systems (e.g. DJGPP)
840 might define a smaller stack limit at that time. */
841 if (1
842 #ifndef CANNOT_DUMP
843 && (!noninteractive || initialized)
844 #endif
845 && !getrlimit (RLIMIT_STACK, &rlim))
846 {
847 long newlim;
848 extern size_t re_max_failures;
849 /* Approximate the amount regex.c needs per unit of re_max_failures. */
850 int ratio = 20 * sizeof (char *);
851 /* Then add 33% to cover the size of the smaller stacks that regex.c
852 successively allocates and discards, on its way to the maximum. */
853 ratio += ratio / 3;
854 /* Add in some extra to cover
855 what we're likely to use for other reasons. */
856 newlim = re_max_failures * ratio + 200000;
857 #ifdef __NetBSD__
858 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
859 stack allocation routine for new process that the allocation
860 fails if stack limit is not on page boundary. So, round up the
861 new limit to page boundary. */
862 newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize ();
863 #endif
864 if (newlim > rlim.rlim_max)
865 {
866 newlim = rlim.rlim_max;
867 /* Don't let regex.c overflow the stack we have. */
868 re_max_failures = (newlim - 200000) / ratio;
869 }
870 if (rlim.rlim_cur < newlim)
871 rlim.rlim_cur = newlim;
872
873 setrlimit (RLIMIT_STACK, &rlim);
874 }
875 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
876
877 /* Record (approximately) where the stack begins. */
878 stack_bottom = &stack_bottom_variable;
879
880 clearerr (stdin);
881
882 #ifndef SYSTEM_MALLOC
883 /* Arrange to get warning messages as memory fills up. */
884 memory_warnings (0, malloc_warning);
885
886 /* Call malloc at least once, to run the initial __malloc_hook.
887 Also call realloc and free for consistency. */
888 free (realloc (malloc (4), 4));
889
890 # ifndef SYNC_INPUT
891 /* Arrange to disable interrupt input inside malloc etc. */
892 uninterrupt_malloc ();
893 # endif /* not SYNC_INPUT */
894 #endif /* not SYSTEM_MALLOC */
895
896 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
897 main_thread = pthread_self ();
898 #endif /* FORWARD_SIGNAL_TO_MAIN_THREAD */
899
900 #if defined (MSDOS) || defined (WINDOWSNT)
901 /* We do all file input/output as binary files. When we need to translate
902 newlines, we do that manually. */
903 _fmode = O_BINARY;
904 #endif /* MSDOS || WINDOWSNT */
905
906 #ifdef MSDOS
907 if (!isatty (fileno (stdin)))
908 setmode (fileno (stdin), O_BINARY);
909 if (!isatty (fileno (stdout)))
910 {
911 fflush (stdout);
912 setmode (fileno (stdout), O_BINARY);
913 }
914 #endif /* MSDOS */
915
916 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
917 The build procedure uses this while dumping, to ensure that the
918 dumped Emacs does not have its system locale tables initialized,
919 as that might cause screwups when the dumped Emacs starts up. */
920 {
921 char *lc_all = getenv ("LC_ALL");
922 do_initial_setlocale = ! lc_all || strcmp (lc_all, "C");
923 }
924
925 /* Set locale now, so that initial error messages are localized properly.
926 fixup_locale must wait until later, since it builds strings. */
927 if (do_initial_setlocale)
928 setlocale (LC_ALL, "");
929
930 inhibit_window_system = 0;
931
932 /* Handle the -t switch, which specifies filename to use as terminal. */
933 while (1)
934 {
935 char *term;
936 if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
937 {
938 int result;
939 emacs_close (0);
940 emacs_close (1);
941 result = emacs_open (term, O_RDWR, 0);
942 if (result < 0 || dup (0) < 0)
943 {
944 char *errstring = strerror (errno);
945 fprintf (stderr, "%s: %s: %s\n", argv[0], term, errstring);
946 exit (1);
947 }
948 if (! isatty (0))
949 {
950 fprintf (stderr, "%s: %s: not a tty\n", argv[0], term);
951 exit (1);
952 }
953 fprintf (stderr, "Using %s\n", term);
954 #ifdef HAVE_WINDOW_SYSTEM
955 inhibit_window_system = 1; /* -t => -nw */
956 #endif
957 }
958 else
959 break;
960 }
961
962 /* Command line option --no-windows is deprecated and thus not mentioned
963 in the manual and usage information. */
964 if (argmatch (argv, argc, "-nw", "--no-window-system", 6, NULL, &skip_args)
965 || argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args))
966 inhibit_window_system = 1;
967
968 /* Handle the -batch switch, which means don't do interactive display. */
969 noninteractive = 0;
970 if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args))
971 {
972 noninteractive = 1;
973 Vundo_outer_limit = Qnil;
974 }
975 if (argmatch (argv, argc, "-script", "--script", 3, &junk, &skip_args))
976 {
977 noninteractive = 1; /* Set batch mode. */
978 /* Convert --script to -scriptload, un-skip it, and sort again
979 so that it will be handled in proper sequence. */
980 /* FIXME broken for --script=FILE - is that supposed to work? */
981 argv[skip_args - 1] = (char *) "-scriptload";
982 skip_args -= 2;
983 sort_args (argc, argv);
984 }
985
986 /* Handle the --help option, which gives a usage message. */
987 if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
988 {
989 printf (USAGE1, argv[0], USAGE2);
990 printf (USAGE3);
991 printf (USAGE4);
992 exit (0);
993 }
994
995 if (argmatch (argv, argc, "-daemon", "--daemon", 5, NULL, &skip_args)
996 || argmatch (argv, argc, "-daemon", "--daemon", 5, &dname_arg, &skip_args))
997 {
998 #ifndef DOS_NT
999 pid_t f;
1000
1001 /* Start as a daemon: fork a new child process which will run the
1002 rest of the initialization code, then exit.
1003
1004 Detaching a daemon requires the following steps:
1005 - fork
1006 - setsid
1007 - exit the parent
1008 - close the tty file-descriptors
1009
1010 We only want to do the last 2 steps once the daemon is ready to
1011 serve requests, i.e. after loading .emacs (initialization).
1012 OTOH initialization may start subprocesses (e.g. ispell) and these
1013 should be run from the proper process (the one that will end up
1014 running as daemon) and with the proper "session id" in order for
1015 them to keep working after detaching, so fork and setsid need to be
1016 performed before initialization.
1017
1018 We want to avoid exiting before the server socket is ready, so
1019 use a pipe for synchronization. The parent waits for the child
1020 to close its end of the pipe (using `daemon-initialized')
1021 before exiting. */
1022 if (pipe (daemon_pipe) == -1)
1023 {
1024 fprintf (stderr, "Cannot pipe!\n");
1025 exit (1);
1026 }
1027
1028 #ifndef NS_IMPL_COCOA
1029 #ifdef USE_GTK
1030 fprintf (stderr, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1031 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1032 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1033 #endif
1034 f = fork ();
1035 #else /* NS_IMPL_COCOA */
1036 /* Under Cocoa we must do fork+exec as CoreFoundation lib fails in
1037 forked process: http://developer.apple.com/ReleaseNotes/
1038 CoreFoundation/CoreFoundation.html)
1039 We mark being in the exec'd process by a daemon name argument of
1040 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
1041 NAME is the original daemon name, if any. */
1042 if (!dname_arg || !strchr (dname_arg, '\n'))
1043 f = fork (); /* in orig */
1044 else
1045 f = 0; /* in exec'd */
1046 #endif /* NS_IMPL_COCOA */
1047 if (f > 0)
1048 {
1049 int retval;
1050 char buf[1];
1051
1052 /* Close unused writing end of the pipe. */
1053 close (daemon_pipe[1]);
1054
1055 /* Just wait for the child to close its end of the pipe. */
1056 do
1057 {
1058 retval = read (daemon_pipe[0], &buf, 1);
1059 }
1060 while (retval == -1 && errno == EINTR);
1061
1062 if (retval < 0)
1063 {
1064 fprintf (stderr, "Error reading status from child\n");
1065 exit (1);
1066 }
1067 else if (retval == 0)
1068 {
1069 fprintf (stderr, "Error: server did not start correctly\n");
1070 exit (1);
1071 }
1072
1073 close (daemon_pipe[0]);
1074 exit (0);
1075 }
1076 if (f < 0)
1077 {
1078 fprintf (stderr, "Cannot fork!\n");
1079 exit (1);
1080 }
1081
1082 #ifdef NS_IMPL_COCOA
1083 {
1084 /* In orig process, forked as child, OR in exec'd. */
1085 if (!dname_arg || !strchr (dname_arg, '\n'))
1086 { /* In orig, child: now exec w/special daemon name. */
1087 char fdStr[80];
1088 int fdStrlen =
1089 snprintf (fdStr, sizeof fdStr,
1090 "--daemon=\n%d,%d\n%s", daemon_pipe[0],
1091 daemon_pipe[1], dname_arg ? dname_arg : "");
1092
1093 if (! (0 <= fdStrlen && fdStrlen < sizeof fdStr))
1094 {
1095 fprintf (stderr, "daemon: child name too long\n");
1096 exit (1);
1097 }
1098
1099 argv[skip_args] = fdStr;
1100
1101 execv (argv[0], argv);
1102 fprintf (stderr, "emacs daemon: exec failed: %d\n", errno);
1103 exit (1);
1104 }
1105
1106 /* In exec'd: parse special dname into pipe and name info. */
1107 if (!dname_arg || !strchr (dname_arg, '\n')
1108 || strlen (dname_arg) < 1 || strlen (dname_arg) > 70)
1109 {
1110 fprintf (stderr, "emacs daemon: daemon name absent or too long\n");
1111 exit (1);
1112 }
1113 dname_arg2[0] = '\0';
1114 sscanf (dname_arg, "\n%d,%d\n%s", &(daemon_pipe[0]), &(daemon_pipe[1]),
1115 dname_arg2);
1116 dname_arg = *dname_arg2 ? dname_arg2 : NULL;
1117 }
1118 #endif /* NS_IMPL_COCOA */
1119
1120 if (dname_arg)
1121 daemon_name = xstrdup (dname_arg);
1122 /* Close unused reading end of the pipe. */
1123 close (daemon_pipe[0]);
1124 /* Make sure that the used end of the pipe is closed on exec, so
1125 that it is not accessible to programs started from .emacs. */
1126 fcntl (daemon_pipe[1], F_SETFD, FD_CLOEXEC);
1127
1128 #ifdef HAVE_SETSID
1129 setsid ();
1130 #endif
1131 #else /* DOS_NT */
1132 fprintf (stderr, "This platform does not support the -daemon flag.\n");
1133 exit (1);
1134 #endif /* DOS_NT */
1135 }
1136
1137 if (! noninteractive)
1138 {
1139 #if defined (USG5) && defined (INTERRUPT_INPUT)
1140 setpgrp ();
1141 #endif
1142 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1143 {
1144 extern void malloc_enable_thread (void);
1145
1146 malloc_enable_thread ();
1147 }
1148 #endif
1149 }
1150
1151 init_signals ();
1152
1153 /* Don't catch SIGHUP if dumping. */
1154 if (1
1155 #ifndef CANNOT_DUMP
1156 && initialized
1157 #endif
1158 )
1159 {
1160 sigblock (sigmask (SIGHUP));
1161 /* In --batch mode, don't catch SIGHUP if already ignored.
1162 That makes nohup work. */
1163 if (! noninteractive
1164 || signal (SIGHUP, SIG_IGN) != SIG_IGN)
1165 signal (SIGHUP, fatal_error_signal);
1166 sigunblock (sigmask (SIGHUP));
1167 }
1168
1169 if (
1170 #ifndef CANNOT_DUMP
1171 ! noninteractive || initialized
1172 #else
1173 1
1174 #endif
1175 )
1176 {
1177 /* Don't catch these signals in batch mode if dumping.
1178 On some machines, this sets static data that would make
1179 signal fail to work right when the dumped Emacs is run. */
1180 signal (SIGQUIT, fatal_error_signal);
1181 signal (SIGILL, fatal_error_signal);
1182 signal (SIGTRAP, fatal_error_signal);
1183 #ifdef SIGUSR1
1184 add_user_signal (SIGUSR1, "sigusr1");
1185 #endif
1186 #ifdef SIGUSR2
1187 add_user_signal (SIGUSR2, "sigusr2");
1188 #endif
1189 #ifdef SIGABRT
1190 signal (SIGABRT, fatal_error_signal);
1191 #endif
1192 #ifdef SIGHWE
1193 signal (SIGHWE, fatal_error_signal);
1194 #endif
1195 #ifdef SIGPRE
1196 signal (SIGPRE, fatal_error_signal);
1197 #endif
1198 #ifdef SIGORE
1199 signal (SIGORE, fatal_error_signal);
1200 #endif
1201 #ifdef SIGUME
1202 signal (SIGUME, fatal_error_signal);
1203 #endif
1204 #ifdef SIGDLK
1205 signal (SIGDLK, fatal_error_signal);
1206 #endif
1207 #ifdef SIGCPULIM
1208 signal (SIGCPULIM, fatal_error_signal);
1209 #endif
1210 #ifdef SIGIOT
1211 /* This is missing on some systems - OS/2, for example. */
1212 signal (SIGIOT, fatal_error_signal);
1213 #endif
1214 #ifdef SIGEMT
1215 signal (SIGEMT, fatal_error_signal);
1216 #endif
1217 signal (SIGFPE, fatal_error_signal);
1218 #ifdef SIGBUS
1219 signal (SIGBUS, fatal_error_signal);
1220 #endif
1221 signal (SIGSEGV, fatal_error_signal);
1222 #ifdef SIGSYS
1223 signal (SIGSYS, fatal_error_signal);
1224 #endif
1225 /* May need special treatment on MS-Windows. See
1226 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1227 Please update the doc of kill-emacs, kill-emacs-hook, and
1228 NEWS if you change this.
1229 */
1230 if (noninteractive) signal (SIGINT, fatal_error_signal);
1231 signal (SIGTERM, fatal_error_signal);
1232 #ifdef SIGXCPU
1233 signal (SIGXCPU, fatal_error_signal);
1234 #endif
1235 #ifdef SIGXFSZ
1236 signal (SIGXFSZ, fatal_error_signal);
1237 #endif /* SIGXFSZ */
1238
1239 #ifdef SIGDANGER
1240 /* This just means available memory is getting low. */
1241 signal (SIGDANGER, memory_warning_signal);
1242 #endif
1243
1244 #ifdef AIX
1245 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1246 signal (SIGXCPU, fatal_error_signal);
1247 signal (SIGIOINT, fatal_error_signal);
1248 signal (SIGGRANT, fatal_error_signal);
1249 signal (SIGRETRACT, fatal_error_signal);
1250 signal (SIGSOUND, fatal_error_signal);
1251 signal (SIGMSG, fatal_error_signal);
1252 #endif /* AIX */
1253 }
1254
1255 noninteractive1 = noninteractive;
1256
1257 /* Perform basic initializations (not merely interning symbols). */
1258
1259 if (!initialized)
1260 {
1261 init_alloc_once ();
1262 init_obarray ();
1263 init_eval_once ();
1264 init_character_once ();
1265 init_charset_once ();
1266 init_coding_once ();
1267 init_syntax_once (); /* Create standard syntax table. */
1268 init_category_once (); /* Create standard category table. */
1269 /* Must be done before init_buffer. */
1270 init_casetab_once ();
1271 init_buffer_once (); /* Create buffer table and some buffers. */
1272 init_minibuf_once (); /* Create list of minibuffers. */
1273 /* Must precede init_window_once. */
1274
1275 /* Call syms_of_xfaces before init_window_once because that
1276 function creates Vterminal_frame. Termcap frames now use
1277 faces, and the face implementation uses some symbols as
1278 face names. */
1279 syms_of_xfaces ();
1280 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1281 be better to arrange things not to have this dependency. */
1282 syms_of_keymap ();
1283 /* Call syms_of_keyboard before init_window_once because
1284 keyboard sets up symbols that include some face names that
1285 the X support will want to use. This can happen when
1286 CANNOT_DUMP is defined. */
1287 syms_of_keyboard ();
1288
1289 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1290 syms_of_data ();
1291 syms_of_fileio ();
1292 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1293 syms_of_alloc ();
1294 /* Before syms_of_coding because it initializes Qcharsetp. */
1295 syms_of_charset ();
1296 /* Before init_window_once, because it sets up the
1297 Vcoding_system_hash_table. */
1298 syms_of_coding (); /* This should be after syms_of_fileio. */
1299
1300 init_window_once (); /* Init the window system. */
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 no_loadup
1324 = argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args);
1325
1326 no_site_lisp
1327 = argmatch (argv, argc, "-nsl", "--no-site-lisp", 11, NULL, &skip_args);
1328
1329 #ifdef HAVE_NS
1330 ns_pool = ns_alloc_autorelease_pool ();
1331 if (!noninteractive)
1332 {
1333 #ifdef NS_IMPL_COCOA
1334 if (skip_args < argc)
1335 {
1336 /* FIXME: Do the right thing if getenv returns NULL, or if
1337 chdir fails. */
1338 if (!strncmp (argv[skip_args], "-psn", 4))
1339 {
1340 skip_args += 1;
1341 chdir (getenv ("HOME"));
1342 }
1343 else if (skip_args+1 < argc && !strncmp (argv[skip_args+1], "-psn", 4))
1344 {
1345 skip_args += 2;
1346 chdir (getenv ("HOME"));
1347 }
1348 }
1349 #endif /* COCOA */
1350 }
1351 #endif /* HAVE_NS */
1352
1353 #ifdef HAVE_X_WINDOWS
1354 /* Stupid kludge to catch command-line display spec. We can't
1355 handle this argument entirely in window system dependent code
1356 because we don't even know which window system dependent code
1357 to run until we've recognized this argument. */
1358 {
1359 char *displayname = 0;
1360 int count_before = skip_args;
1361
1362 /* Skip any number of -d options, but only use the last one. */
1363 while (1)
1364 {
1365 int count_before_this = skip_args;
1366
1367 if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args))
1368 display_arg = 1;
1369 else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args))
1370 display_arg = 1;
1371 else
1372 break;
1373
1374 count_before = count_before_this;
1375 }
1376
1377 /* If we have the form --display=NAME,
1378 convert it into -d name.
1379 This requires inserting a new element into argv. */
1380 if (displayname && count_before < skip_args)
1381 {
1382 if (skip_args == count_before + 1)
1383 {
1384 memmove (argv + count_before + 3, argv + count_before + 2,
1385 (argc - (count_before + 2)) * sizeof *argv);
1386 argv[count_before + 2] = displayname;
1387 argc++;
1388 }
1389 argv[count_before + 1] = (char *) "-d";
1390 }
1391
1392 if (! no_site_lisp)
1393 {
1394 if (argmatch (argv, argc, "-Q", "--quick", 3, NULL, &skip_args)
1395 || argmatch (argv, argc, "-quick", 0, 2, NULL, &skip_args))
1396 no_site_lisp = 1;
1397 }
1398
1399 /* Don't actually discard this arg. */
1400 skip_args = count_before;
1401 }
1402 #else /* !HAVE_X_WINDOWS */
1403 if (! no_site_lisp)
1404 {
1405 int count_before = skip_args;
1406
1407 if (argmatch (argv, argc, "-Q", "--quick", 3, NULL, &skip_args)
1408 || argmatch (argv, argc, "-quick", 0, 2, NULL, &skip_args))
1409 no_site_lisp = 1;
1410
1411 skip_args = count_before;
1412 }
1413 #endif
1414
1415 /* argmatch must not be used after here,
1416 except when building temacs
1417 because the -d argument has not been skipped in skip_args. */
1418
1419 #ifdef MSDOS
1420 /* Call early 'cause init_environment needs it. */
1421 init_dosfns ();
1422 /* Set defaults for several environment variables. */
1423 if (initialized)
1424 init_environment (argc, argv, skip_args);
1425 else
1426 tzset ();
1427 #endif /* MSDOS */
1428
1429 #ifdef WINDOWSNT
1430 globals_of_w32 ();
1431 /* Initialize environment from registry settings. */
1432 init_environment (argv);
1433 init_ntproc (); /* must precede init_editfns. */
1434 #endif
1435
1436 #ifdef HAVE_NS
1437 #ifndef CANNOT_DUMP
1438 if (initialized)
1439 #endif
1440 ns_init_paths ();
1441 #endif
1442
1443 /* Initialize and GC-protect Vinitial_environment and
1444 Vprocess_environment before set_initial_environment fills them
1445 in. */
1446 if (!initialized)
1447 syms_of_callproc ();
1448 /* egetenv is a pretty low-level facility, which may get called in
1449 many circumstances; it seems flimsy to put off initializing it
1450 until calling init_callproc. Do not do it when dumping. */
1451 if (initialized || ((strcmp (argv[argc-1], "dump") != 0
1452 && strcmp (argv[argc-1], "bootstrap") != 0)))
1453 set_initial_environment ();
1454
1455 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1456 if this is not done. Do it after set_global_environment so that we
1457 don't pollute Vglobal_environment. */
1458 /* Setting LANG here will defeat the startup locale processing... */
1459 #ifdef AIX
1460 putenv ("LANG=C");
1461 #endif
1462
1463 init_buffer (); /* Init default directory of main buffer. */
1464
1465 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1466 init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */
1467
1468 if (initialized)
1469 {
1470 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1471 Lisp_Object old_log_max;
1472 old_log_max = Vmessage_log_max;
1473 XSETFASTINT (Vmessage_log_max, 0);
1474 message_dolog ("", 0, 1, 0);
1475 Vmessage_log_max = old_log_max;
1476 }
1477
1478 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1479 init_lread ();
1480
1481 /* Intern the names of all standard functions and variables;
1482 define standard keys. */
1483
1484 if (!initialized)
1485 {
1486 /* The basic levels of Lisp must come first. Note that
1487 syms_of_data and some others have already been called. */
1488 syms_of_chartab ();
1489 syms_of_lread ();
1490 syms_of_print ();
1491 syms_of_eval ();
1492 syms_of_fns ();
1493 syms_of_floatfns ();
1494
1495 syms_of_buffer ();
1496 syms_of_bytecode ();
1497 syms_of_callint ();
1498 syms_of_casefiddle ();
1499 syms_of_casetab ();
1500 syms_of_category ();
1501 syms_of_ccl ();
1502 syms_of_character ();
1503 syms_of_cmds ();
1504 syms_of_dired ();
1505 syms_of_display ();
1506 syms_of_doc ();
1507 syms_of_editfns ();
1508 syms_of_emacs ();
1509 syms_of_filelock ();
1510 syms_of_indent ();
1511 syms_of_insdel ();
1512 /* syms_of_keymap (); */
1513 syms_of_macros ();
1514 syms_of_marker ();
1515 syms_of_minibuf ();
1516 syms_of_process ();
1517 syms_of_search ();
1518 syms_of_frame ();
1519 syms_of_syntax ();
1520 syms_of_terminal ();
1521 syms_of_term ();
1522 syms_of_undo ();
1523 #ifdef HAVE_SOUND
1524 syms_of_sound ();
1525 #endif
1526 syms_of_textprop ();
1527 syms_of_composite ();
1528 #ifdef WINDOWSNT
1529 syms_of_ntproc ();
1530 #endif /* WINDOWSNT */
1531 syms_of_window ();
1532 syms_of_xdisp ();
1533 syms_of_font ();
1534 #ifdef HAVE_WINDOW_SYSTEM
1535 syms_of_fringe ();
1536 syms_of_image ();
1537 #endif /* HAVE_WINDOW_SYSTEM */
1538 #ifdef HAVE_X_WINDOWS
1539 syms_of_xterm ();
1540 syms_of_xfns ();
1541 syms_of_xmenu ();
1542 syms_of_fontset ();
1543 syms_of_xsettings ();
1544 #ifdef HAVE_X_SM
1545 syms_of_xsmfns ();
1546 #endif
1547 #ifdef HAVE_X11
1548 syms_of_xselect ();
1549 #endif
1550 #endif /* HAVE_X_WINDOWS */
1551
1552 #ifdef HAVE_LIBXML2
1553 syms_of_xml ();
1554 #endif
1555
1556 syms_of_menu ();
1557
1558 #ifdef HAVE_NTGUI
1559 syms_of_w32term ();
1560 syms_of_w32fns ();
1561 syms_of_w32select ();
1562 syms_of_w32menu ();
1563 syms_of_fontset ();
1564 #endif /* HAVE_NTGUI */
1565
1566 #ifdef MSDOS
1567 syms_of_xmenu ();
1568 syms_of_dosfns ();
1569 syms_of_msdos ();
1570 syms_of_win16select ();
1571 #endif /* MSDOS */
1572
1573 #ifdef HAVE_NS
1574 syms_of_nsterm ();
1575 syms_of_nsfns ();
1576 syms_of_nsmenu ();
1577 syms_of_nsselect ();
1578 syms_of_fontset ();
1579 #endif /* HAVE_NS */
1580
1581 #ifdef HAVE_GNUTLS
1582 syms_of_gnutls ();
1583 #endif
1584
1585 #ifdef HAVE_DBUS
1586 syms_of_dbusbind ();
1587 #endif /* HAVE_DBUS */
1588
1589 #ifdef WINDOWSNT
1590 syms_of_ntterm ();
1591 #endif /* WINDOWSNT */
1592
1593 keys_of_casefiddle ();
1594 keys_of_cmds ();
1595 keys_of_buffer ();
1596 keys_of_keyboard ();
1597 keys_of_keymap ();
1598 keys_of_window ();
1599 }
1600 else
1601 {
1602 /* Initialization that must be done even if the global variable
1603 initialized is non zero. */
1604 #ifdef HAVE_NTGUI
1605 globals_of_w32font ();
1606 globals_of_w32fns ();
1607 globals_of_w32menu ();
1608 globals_of_w32select ();
1609 #endif /* HAVE_NTGUI */
1610 }
1611
1612 init_charset ();
1613
1614 init_editfns (); /* init_process uses Voperating_system_release. */
1615 init_process (); /* init_display uses add_keyboard_wait_descriptor. */
1616 init_keyboard (); /* This too must precede init_sys_modes. */
1617 if (!noninteractive)
1618 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1619 init_fns ();
1620 init_xdisp ();
1621 #ifdef HAVE_WINDOW_SYSTEM
1622 init_fringe ();
1623 init_image ();
1624 #endif /* HAVE_WINDOW_SYSTEM */
1625 init_macros ();
1626 init_floatfns ();
1627 #ifdef HAVE_SOUND
1628 init_sound ();
1629 #endif
1630 init_window ();
1631 init_font ();
1632
1633 if (!initialized)
1634 {
1635 char *file;
1636 /* Handle -l loadup, args passed by Makefile. */
1637 if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args))
1638 Vtop_level = Fcons (intern_c_string ("load"),
1639 Fcons (build_string (file), Qnil));
1640 /* Unless next switch is -nl, load "loadup.el" first thing. */
1641 if (! no_loadup)
1642 Vtop_level = Fcons (intern_c_string ("load"),
1643 Fcons (build_string ("loadup.el"), Qnil));
1644 }
1645
1646 if (initialized)
1647 {
1648 #ifdef HAVE_TZSET
1649 {
1650 /* If the execution TZ happens to be the same as the dump TZ,
1651 change it to some other value and then change it back,
1652 to force the underlying implementation to reload the TZ info.
1653 This is needed on implementations that load TZ info from files,
1654 since the TZ file contents may differ between dump and execution. */
1655 char *tz = getenv ("TZ");
1656 if (tz && !strcmp (tz, dump_tz))
1657 {
1658 ++*tz;
1659 tzset ();
1660 --*tz;
1661 }
1662 }
1663 #endif
1664 }
1665
1666 /* Set up for profiling. This is known to work on FreeBSD,
1667 GNU/Linux and MinGW. It might work on some other systems too.
1668 Give it a try and tell us if it works on your system. To compile
1669 for profiling, use the configure option --enable-profiling. */
1670 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1671 #ifdef PROFILING
1672 if (initialized)
1673 {
1674 #ifdef __MINGW32__
1675 extern unsigned char etext asm ("etext");
1676 #else
1677 extern char etext;
1678 #endif
1679
1680 atexit (_mcleanup);
1681 monstartup ((uintptr_t) __executable_start, (uintptr_t) &etext);
1682 }
1683 else
1684 moncontrol (0);
1685 #endif
1686 #endif
1687
1688 initialized = 1;
1689
1690 #ifdef LOCALTIME_CACHE
1691 /* Some versions of localtime have a bug. They cache the value of the time
1692 zone rather than looking it up every time. Since localtime() is
1693 called to bolt the undumping time into the undumped emacs, this
1694 results in localtime ignoring the TZ environment variable.
1695 This flushes the new TZ value into localtime. */
1696 tzset ();
1697 #endif /* defined (LOCALTIME_CACHE) */
1698
1699 /* Enter editor command loop. This never returns. */
1700 Frecursive_edit ();
1701 /* NOTREACHED */
1702 return 0;
1703 }
1704 \f
1705 /* Sort the args so we can find the most important ones
1706 at the beginning of argv. */
1707
1708 /* First, here's a table of all the standard options. */
1709
1710 struct standard_args
1711 {
1712 const char *name;
1713 const char *longname;
1714 int priority;
1715 int nargs;
1716 };
1717
1718 static const struct standard_args standard_args[] =
1719 {
1720 { "-version", "--version", 150, 0 },
1721 { "-chdir", "--chdir", 130, 1 },
1722 { "-t", "--terminal", 120, 1 },
1723 { "-nw", "--no-window-system", 110, 0 },
1724 { "-nw", "--no-windows", 110, 0 },
1725 { "-batch", "--batch", 100, 0 },
1726 { "-script", "--script", 100, 1 },
1727 { "-daemon", "--daemon", 99, 0 },
1728 { "-help", "--help", 90, 0 },
1729 { "-nl", "--no-loadup", 70, 0 },
1730 { "-nsl", "--no-site-lisp", 65, 0 },
1731 /* -d must come last before the options handled in startup.el. */
1732 { "-d", "--display", 60, 1 },
1733 { "-display", 0, 60, 1 },
1734 /* Now for the options handled in `command-line' (startup.el). */
1735 /* (Note that to imply -nsl, -Q is partially handled here.) */
1736 { "-Q", "--quick", 55, 0 },
1737 { "-quick", 0, 55, 0 },
1738 { "-q", "--no-init-file", 50, 0 },
1739 { "-no-init-file", 0, 50, 0 },
1740 { "-no-site-file", "--no-site-file", 40, 0 },
1741 { "-u", "--user", 30, 1 },
1742 { "-user", 0, 30, 1 },
1743 { "-debug-init", "--debug-init", 20, 0 },
1744 { "-iconic", "--iconic", 15, 0 },
1745 { "-D", "--basic-display", 12, 0},
1746 { "-basic-display", 0, 12, 0},
1747 { "-nbc", "--no-blinking-cursor", 12, 0 },
1748 /* Now for the options handled in `command-line-1' (startup.el). */
1749 { "-nbi", "--no-bitmap-icon", 10, 0 },
1750 { "-bg", "--background-color", 10, 1 },
1751 { "-background", 0, 10, 1 },
1752 { "-fg", "--foreground-color", 10, 1 },
1753 { "-foreground", 0, 10, 1 },
1754 { "-bd", "--border-color", 10, 1 },
1755 { "-bw", "--border-width", 10, 1 },
1756 { "-ib", "--internal-border", 10, 1 },
1757 { "-ms", "--mouse-color", 10, 1 },
1758 { "-cr", "--cursor-color", 10, 1 },
1759 { "-fn", "--font", 10, 1 },
1760 { "-font", 0, 10, 1 },
1761 { "-fs", "--fullscreen", 10, 0 },
1762 { "-fw", "--fullwidth", 10, 0 },
1763 { "-fh", "--fullheight", 10, 0 },
1764 { "-mm", "--maximized", 10, 0 },
1765 { "-g", "--geometry", 10, 1 },
1766 { "-geometry", 0, 10, 1 },
1767 { "-T", "--title", 10, 1 },
1768 { "-title", 0, 10, 1 },
1769 { "-name", "--name", 10, 1 },
1770 { "-xrm", "--xrm", 10, 1 },
1771 { "-parent-id", "--parent-id", 10, 1 },
1772 { "-r", "--reverse-video", 5, 0 },
1773 { "-rv", 0, 5, 0 },
1774 { "-reverse", 0, 5, 0 },
1775 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1776 { "-vb", "--vertical-scroll-bars", 5, 0 },
1777 { "-color", "--color", 5, 0},
1778 { "-no-splash", "--no-splash", 3, 0 },
1779 { "-no-desktop", "--no-desktop", 3, 0 },
1780 #ifdef HAVE_NS
1781 { "-NSAutoLaunch", 0, 5, 1 },
1782 { "-NXAutoLaunch", 0, 5, 1 },
1783 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1784 { "-_NSMachLaunch", 0, 85, 1 },
1785 { "-MachLaunch", 0, 85, 1 },
1786 { "-macosx", 0, 85, 0 },
1787 { "-NSHost", 0, 85, 1 },
1788 #endif
1789 /* These have the same priority as ordinary file name args,
1790 so they are not reordered with respect to those. */
1791 { "-L", "--directory", 0, 1 },
1792 { "-directory", 0, 0, 1 },
1793 { "-l", "--load", 0, 1 },
1794 { "-load", 0, 0, 1 },
1795 /* This has no longname, because using --scriptload confuses sort_args,
1796 because then the --script long option seems to match twice; ie
1797 you can't have a long option which is a prefix of another long
1798 option. In any case, this is entirely an internal option. */
1799 { "-scriptload", NULL, 0, 1 },
1800 { "-f", "--funcall", 0, 1 },
1801 { "-funcall", 0, 0, 1 },
1802 { "-eval", "--eval", 0, 1 },
1803 { "-execute", "--execute", 0, 1 },
1804 { "-find-file", "--find-file", 0, 1 },
1805 { "-visit", "--visit", 0, 1 },
1806 { "-file", "--file", 0, 1 },
1807 { "-insert", "--insert", 0, 1 },
1808 #ifdef HAVE_NS
1809 { "-NXOpen", 0, 0, 1 },
1810 { "-NXOpenTemp", 0, 0, 1 },
1811 { "-NSOpen", 0, 0, 1 },
1812 { "-NSOpenTemp", 0, 0, 1 },
1813 { "-GSFilePath", 0, 0, 1 },
1814 #endif
1815 /* This should be processed after ordinary file name args and the like. */
1816 { "-kill", "--kill", -10, 0 },
1817 };
1818
1819 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1820 so that the highest priority ones come first.
1821 Do not change the order of elements of equal priority.
1822 If an option takes an argument, keep it and its argument together.
1823
1824 If an option that takes no argument appears more
1825 than once, eliminate all but one copy of it. */
1826
1827 static void
1828 sort_args (int argc, char **argv)
1829 {
1830 char **new = (char **) xmalloc (sizeof (char *) * argc);
1831 /* For each element of argv,
1832 the corresponding element of options is:
1833 0 for an option that takes no arguments,
1834 1 for an option that takes one argument, etc.
1835 -1 for an ordinary non-option argument. */
1836 int *options = xnmalloc (argc, sizeof *options);
1837 int *priority = xnmalloc (argc, sizeof *priority);
1838 int to = 1;
1839 int incoming_used = 1;
1840 int from;
1841 int i;
1842
1843 /* Categorize all the options,
1844 and figure out which argv elts are option arguments. */
1845 for (from = 1; from < argc; from++)
1846 {
1847 options[from] = -1;
1848 priority[from] = 0;
1849 if (argv[from][0] == '-')
1850 {
1851 int match;
1852
1853 /* If we have found "--", don't consider
1854 any more arguments as options. */
1855 if (argv[from][1] == '-' && argv[from][2] == 0)
1856 {
1857 /* Leave the "--", and everything following it, at the end. */
1858 for (; from < argc; from++)
1859 {
1860 priority[from] = -100;
1861 options[from] = -1;
1862 }
1863 break;
1864 }
1865
1866 /* Look for a match with a known old-fashioned option. */
1867 for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1868 if (!strcmp (argv[from], standard_args[i].name))
1869 {
1870 options[from] = standard_args[i].nargs;
1871 priority[from] = standard_args[i].priority;
1872 if (from + standard_args[i].nargs >= argc)
1873 fatal ("Option `%s' requires an argument\n", argv[from]);
1874 from += standard_args[i].nargs;
1875 goto done;
1876 }
1877
1878 /* Look for a match with a known long option.
1879 MATCH is -1 if no match so far, -2 if two or more matches so far,
1880 >= 0 (the table index of the match) if just one match so far. */
1881 if (argv[from][1] == '-')
1882 {
1883 char const *equals = strchr (argv[from], '=');
1884 ptrdiff_t thislen =
1885 equals ? equals - argv[from] : strlen (argv[from]);
1886
1887 match = -1;
1888
1889 for (i = 0;
1890 i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1891 if (standard_args[i].longname
1892 && !strncmp (argv[from], standard_args[i].longname,
1893 thislen))
1894 {
1895 if (match == -1)
1896 match = i;
1897 else
1898 match = -2;
1899 }
1900
1901 /* If we found exactly one match, use that. */
1902 if (match >= 0)
1903 {
1904 options[from] = standard_args[match].nargs;
1905 priority[from] = standard_args[match].priority;
1906 /* If --OPTION=VALUE syntax is used,
1907 this option uses just one argv element. */
1908 if (equals != 0)
1909 options[from] = 0;
1910 if (from + options[from] >= argc)
1911 fatal ("Option `%s' requires an argument\n", argv[from]);
1912 from += options[from];
1913 }
1914 /* FIXME When match < 0, shouldn't there be some error,
1915 or at least indication to the user that there was a
1916 problem? */
1917 }
1918 done: ;
1919 }
1920 }
1921
1922 /* Copy the arguments, in order of decreasing priority, to NEW. */
1923 new[0] = argv[0];
1924 while (incoming_used < argc)
1925 {
1926 int best = -1;
1927 int best_priority = -9999;
1928
1929 /* Find the highest priority remaining option.
1930 If several have equal priority, take the first of them. */
1931 for (from = 1; from < argc; from++)
1932 {
1933 if (argv[from] != 0 && priority[from] > best_priority)
1934 {
1935 best_priority = priority[from];
1936 best = from;
1937 }
1938 /* Skip option arguments--they are tied to the options. */
1939 if (options[from] > 0)
1940 from += options[from];
1941 }
1942
1943 if (best < 0)
1944 abort ();
1945
1946 /* Copy the highest priority remaining option, with its args, to NEW.
1947 Unless it is a duplicate of the previous one. */
1948 if (! (options[best] == 0
1949 && ! strcmp (new[to - 1], argv[best])))
1950 {
1951 new[to++] = argv[best];
1952 for (i = 0; i < options[best]; i++)
1953 new[to++] = argv[best + i + 1];
1954 }
1955
1956 incoming_used += 1 + (options[best] > 0 ? options[best] : 0);
1957
1958 /* Clear out this option in ARGV. */
1959 argv[best] = 0;
1960 for (i = 0; i < options[best]; i++)
1961 argv[best + i + 1] = 0;
1962 }
1963
1964 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1965 while (to < argc)
1966 new[to++] = 0;
1967
1968 memcpy (argv, new, sizeof (char *) * argc);
1969
1970 xfree (options);
1971 xfree (new);
1972 xfree (priority);
1973 }
1974 \f
1975 DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P",
1976 doc: /* Exit the Emacs job and kill it.
1977 If ARG is an integer, return ARG as the exit program code.
1978 If ARG is a string, stuff it as keyboard input.
1979
1980 This function is called upon receipt of the signals SIGTERM
1981 or SIGHUP, and upon SIGINT in batch mode.
1982
1983 The value of `kill-emacs-hook', if not void,
1984 is a list of functions (of no args),
1985 all of which are called before Emacs is actually killed. */)
1986 (Lisp_Object arg)
1987 {
1988 struct gcpro gcpro1;
1989 Lisp_Object hook;
1990 int exit_code;
1991
1992 GCPRO1 (arg);
1993
1994 if (feof (stdin))
1995 arg = Qt;
1996
1997 hook = intern ("kill-emacs-hook");
1998 Frun_hooks (1, &hook);
1999
2000 UNGCPRO;
2001
2002 #ifdef HAVE_X_WINDOWS
2003 /* Transfer any clipboards we own to the clipboard manager. */
2004 x_clipboard_manager_save_all ();
2005 #endif
2006
2007 shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil);
2008
2009 #ifdef HAVE_NS
2010 ns_release_autorelease_pool (ns_pool);
2011 #endif
2012
2013 /* If we have an auto-save list file,
2014 kill it because we are exiting Emacs deliberately (not crashing).
2015 Do it after shut_down_emacs, which does an auto-save. */
2016 if (STRINGP (Vauto_save_list_file_name))
2017 unlink (SSDATA (Vauto_save_list_file_name));
2018
2019 if (INTEGERP (arg))
2020 exit_code = (XINT (arg) < 0
2021 ? XINT (arg) | INT_MIN
2022 : XINT (arg) & INT_MAX);
2023 else if (noninteractive && (fflush (stdout) || ferror (stdout)))
2024 exit_code = EXIT_FAILURE;
2025 else
2026 exit_code = EXIT_SUCCESS;
2027 exit (exit_code);
2028 }
2029
2030
2031 /* Perform an orderly shutdown of Emacs. Autosave any modified
2032 buffers, kill any child processes, clean up the terminal modes (if
2033 we're in the foreground), and other stuff like that. Don't perform
2034 any redisplay; this may be called when Emacs is shutting down in
2035 the background, or after its X connection has died.
2036
2037 If SIG is a signal number, print a message for it.
2038
2039 This is called by fatal signal handlers, X protocol error handlers,
2040 and Fkill_emacs. */
2041
2042 void
2043 shut_down_emacs (int sig, int no_x, Lisp_Object stuff)
2044 {
2045 /* Prevent running of hooks from now on. */
2046 Vrun_hooks = Qnil;
2047
2048 /* Don't update display from now on. */
2049 Vinhibit_redisplay = Qt;
2050
2051 /* If we are controlling the terminal, reset terminal modes. */
2052 #ifndef DOS_NT
2053 {
2054 int pgrp = EMACS_GETPGRP (0);
2055 int tpgrp = tcgetpgrp (0);
2056 if ((tpgrp != -1) && tpgrp == pgrp)
2057 {
2058 reset_all_sys_modes ();
2059 if (sig && sig != SIGTERM)
2060 fprintf (stderr, "Fatal error (%d)", sig);
2061 }
2062 }
2063 #else
2064 fflush (stdout);
2065 reset_all_sys_modes ();
2066 #endif
2067
2068 stuff_buffered_input (stuff);
2069
2070 inhibit_sentinels = 1;
2071 kill_buffer_processes (Qnil);
2072 Fdo_auto_save (Qt, Qnil);
2073
2074 #ifdef CLASH_DETECTION
2075 unlock_all_files ();
2076 #endif
2077
2078 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2079 #ifdef HAVE_X_WINDOWS
2080 /* It's not safe to call intern here. Maybe we are crashing. */
2081 if (!noninteractive && SYMBOLP (Vinitial_window_system)
2082 && SCHARS (SYMBOL_NAME (Vinitial_window_system)) == 1
2083 && SREF (SYMBOL_NAME (Vinitial_window_system), 0) == 'x'
2084 && ! no_x)
2085 Fx_close_current_connection ();
2086 #endif /* HAVE_X_WINDOWS */
2087 #endif
2088
2089 #ifdef SIGIO
2090 /* There is a tendency for a SIGIO signal to arrive within exit,
2091 and cause a SIGHUP because the input descriptor is already closed. */
2092 unrequest_sigio ();
2093 signal (SIGIO, SIG_IGN);
2094 #endif
2095
2096 #ifdef WINDOWSNT
2097 term_ntproc ();
2098 #endif
2099
2100 /* Do this only if terminating normally, we want glyph matrices
2101 etc. in a core dump. */
2102 if (sig == 0 || sig == SIGTERM)
2103 {
2104 check_glyph_memory ();
2105 check_message_stack ();
2106 }
2107
2108 #ifdef MSDOS
2109 dos_cleanup ();
2110 #endif
2111
2112 #ifdef HAVE_NS
2113 ns_term_shutdown (sig);
2114 #endif
2115
2116 #ifdef HAVE_LIBXML2
2117 xml_cleanup_parser ();
2118 #endif
2119 }
2120
2121
2122 \f
2123 #ifndef CANNOT_DUMP
2124
2125 #include "unexec.h"
2126
2127 DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0,
2128 doc: /* Dump current state of Emacs into executable file FILENAME.
2129 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2130 This is used in the file `loadup.el' when building Emacs.
2131
2132 You must run Emacs in batch mode in order to dump it. */)
2133 (Lisp_Object filename, Lisp_Object symfile)
2134 {
2135 Lisp_Object tem;
2136 Lisp_Object symbol;
2137 ptrdiff_t count = SPECPDL_INDEX ();
2138
2139 check_pure_size ();
2140
2141 if (! noninteractive)
2142 error ("Dumping Emacs works only in batch mode");
2143
2144 #ifdef GNU_LINUX
2145
2146 /* Warn if the gap between BSS end and heap start is larger than this. */
2147 # define MAX_HEAP_BSS_DIFF (1024*1024)
2148
2149 if (heap_bss_diff > MAX_HEAP_BSS_DIFF)
2150 {
2151 fprintf (stderr, "**************************************************\n");
2152 fprintf (stderr, "Warning: Your system has a gap between BSS and the\n");
2153 fprintf (stderr, "heap (%"pMu" bytes). This usually means that exec-shield\n",
2154 heap_bss_diff);
2155 fprintf (stderr, "or something similar is in effect. The dump may\n");
2156 fprintf (stderr, "fail because of this. See the section about\n");
2157 fprintf (stderr, "exec-shield in etc/PROBLEMS for more information.\n");
2158 fprintf (stderr, "**************************************************\n");
2159 }
2160 #endif /* GNU_LINUX */
2161
2162 /* Bind `command-line-processed' to nil before dumping,
2163 so that the dumped Emacs will process its command line
2164 and set up to work with X windows if appropriate. */
2165 symbol = intern ("command-line-processed");
2166 specbind (symbol, Qnil);
2167
2168 CHECK_STRING (filename);
2169 filename = Fexpand_file_name (filename, Qnil);
2170 if (!NILP (symfile))
2171 {
2172 CHECK_STRING (symfile);
2173 if (SCHARS (symfile))
2174 symfile = Fexpand_file_name (symfile, Qnil);
2175 }
2176
2177 tem = Vpurify_flag;
2178 Vpurify_flag = Qnil;
2179
2180 #ifdef HAVE_TZSET
2181 set_time_zone_rule (dump_tz);
2182 #ifndef LOCALTIME_CACHE
2183 /* Force a tz reload, since set_time_zone_rule doesn't. */
2184 tzset ();
2185 #endif
2186 #endif
2187
2188 fflush (stdout);
2189 /* Tell malloc where start of impure now is. */
2190 /* Also arrange for warnings when nearly out of space. */
2191 #ifndef SYSTEM_MALLOC
2192 #ifndef WINDOWSNT
2193 /* On Windows, this was done before dumping, and that once suffices.
2194 Meanwhile, my_edata is not valid on Windows. */
2195 {
2196 extern char my_edata[];
2197 memory_warnings (my_edata, malloc_warning);
2198 }
2199 #endif /* not WINDOWSNT */
2200 #if defined (HAVE_PTHREAD) && !defined SYNC_INPUT
2201 /* Pthread may call malloc before main, and then we will get an endless
2202 loop, because pthread_self (see alloc.c) calls malloc the first time
2203 it is called on some systems. */
2204 reset_malloc_hooks ();
2205 #endif
2206 #endif /* not SYSTEM_MALLOC */
2207 #ifdef DOUG_LEA_MALLOC
2208 malloc_state_ptr = malloc_get_state ();
2209 #endif
2210
2211 #ifdef USE_MMAP_FOR_BUFFERS
2212 mmap_set_vars (0);
2213 #endif
2214 unexec (SSDATA (filename), !NILP (symfile) ? SSDATA (symfile) : 0);
2215 #ifdef USE_MMAP_FOR_BUFFERS
2216 mmap_set_vars (1);
2217 #endif
2218 #ifdef DOUG_LEA_MALLOC
2219 free (malloc_state_ptr);
2220 #endif
2221
2222 Vpurify_flag = tem;
2223
2224 return unbind_to (count, Qnil);
2225 }
2226
2227 #endif /* not CANNOT_DUMP */
2228 \f
2229 #if HAVE_SETLOCALE
2230 /* Recover from setlocale (LC_ALL, ""). */
2231 void
2232 fixup_locale (void)
2233 {
2234 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2235 so that numbers are read and printed properly for Emacs Lisp. */
2236 setlocale (LC_NUMERIC, "C");
2237 }
2238
2239 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2240 DESIRED_LOCALE. */
2241 static void
2242 synchronize_locale (int category, Lisp_Object *plocale, Lisp_Object desired_locale)
2243 {
2244 if (! EQ (*plocale, desired_locale))
2245 {
2246 *plocale = desired_locale;
2247 setlocale (category, (STRINGP (desired_locale)
2248 ? SSDATA (desired_locale)
2249 : ""));
2250 }
2251 }
2252
2253 /* Set system time locale to match Vsystem_time_locale, if possible. */
2254 void
2255 synchronize_system_time_locale (void)
2256 {
2257 synchronize_locale (LC_TIME, &Vprevious_system_time_locale,
2258 Vsystem_time_locale);
2259 }
2260
2261 /* Set system messages locale to match Vsystem_messages_locale, if
2262 possible. */
2263 void
2264 synchronize_system_messages_locale (void)
2265 {
2266 #ifdef LC_MESSAGES
2267 synchronize_locale (LC_MESSAGES, &Vprevious_system_messages_locale,
2268 Vsystem_messages_locale);
2269 #endif
2270 }
2271 #endif /* HAVE_SETLOCALE */
2272 \f
2273 #ifndef SEPCHAR
2274 #define SEPCHAR ':'
2275 #endif
2276
2277 Lisp_Object
2278 decode_env_path (const char *evarname, const char *defalt)
2279 {
2280 const char *path, *p;
2281 Lisp_Object lpath, element, tem;
2282
2283 /* It's okay to use getenv here, because this function is only used
2284 to initialize variables when Emacs starts up, and isn't called
2285 after that. */
2286 if (evarname != 0)
2287 path = getenv (evarname);
2288 else
2289 path = 0;
2290 if (!path)
2291 path = defalt;
2292 #ifdef DOS_NT
2293 /* Ensure values from the environment use the proper directory separator. */
2294 if (path)
2295 {
2296 char *path_copy = alloca (strlen (path) + 1);
2297 strcpy (path_copy, path);
2298 dostounix_filename (path_copy);
2299 path = path_copy;
2300 }
2301 #endif
2302 lpath = Qnil;
2303 while (1)
2304 {
2305 p = strchr (path, SEPCHAR);
2306 if (!p)
2307 p = path + strlen (path);
2308 element = (p - path ? make_string (path, p - path)
2309 : build_string ("."));
2310
2311 /* Add /: to the front of the name
2312 if it would otherwise be treated as magic. */
2313 tem = Ffind_file_name_handler (element, Qt);
2314
2315 /* However, if the handler says "I'm safe",
2316 don't bother adding /:. */
2317 if (SYMBOLP (tem))
2318 {
2319 Lisp_Object prop;
2320 prop = Fget (tem, intern ("safe-magic"));
2321 if (! NILP (prop))
2322 tem = Qnil;
2323 }
2324
2325 if (! NILP (tem))
2326 element = concat2 (build_string ("/:"), element);
2327
2328 lpath = Fcons (element, lpath);
2329 if (*p)
2330 path = p + 1;
2331 else
2332 break;
2333 }
2334 return Fnreverse (lpath);
2335 }
2336
2337 DEFUN ("daemonp", Fdaemonp, Sdaemonp, 0, 0, 0,
2338 doc: /* Return non-nil if the current emacs process is a daemon.
2339 If the daemon was given a name argument, return that name. */)
2340 (void)
2341 {
2342 if (IS_DAEMON)
2343 if (daemon_name)
2344 return build_string (daemon_name);
2345 else
2346 return Qt;
2347 else
2348 return Qnil;
2349 }
2350
2351 DEFUN ("daemon-initialized", Fdaemon_initialized, Sdaemon_initialized, 0, 0, 0,
2352 doc: /* Mark the Emacs daemon as being initialized.
2353 This finishes the daemonization process by doing the other half of detaching
2354 from the parent process and its tty file descriptors. */)
2355 (void)
2356 {
2357 int nfd;
2358 int err = 0;
2359
2360 if (!IS_DAEMON)
2361 error ("This function can only be called if emacs is run as a daemon");
2362
2363 if (daemon_pipe[1] < 0)
2364 error ("The daemon has already been initialized");
2365
2366 if (NILP (Vafter_init_time))
2367 error ("This function can only be called after loading the init files");
2368
2369 /* Get rid of stdin, stdout and stderr. */
2370 nfd = open ("/dev/null", O_RDWR);
2371 err |= nfd < 0;
2372 err |= dup2 (nfd, 0) < 0;
2373 err |= dup2 (nfd, 1) < 0;
2374 err |= dup2 (nfd, 2) < 0;
2375 err |= close (nfd) != 0;
2376
2377 /* Closing the pipe will notify the parent that it can exit.
2378 FIXME: In case some other process inherited the pipe, closing it here
2379 won't notify the parent because it's still open elsewhere, so we
2380 additionally send a byte, just to make sure the parent really exits.
2381 Instead, we should probably close the pipe in start-process and
2382 call-process to make sure the pipe is never inherited by
2383 subprocesses. */
2384 err |= write (daemon_pipe[1], "\n", 1) < 0;
2385 err |= close (daemon_pipe[1]) != 0;
2386 /* Set it to an invalid value so we know we've already run this function. */
2387 daemon_pipe[1] = -1;
2388
2389 if (err)
2390 error ("I/O error during daemon initialization");
2391 return Qt;
2392 }
2393
2394 void
2395 syms_of_emacs (void)
2396 {
2397 DEFSYM (Qfile_name_handler_alist, "file-name-handler-alist");
2398 DEFSYM (Qrisky_local_variable, "risky-local-variable");
2399 DEFSYM (Qkill_emacs, "kill-emacs");
2400
2401 #ifndef CANNOT_DUMP
2402 defsubr (&Sdump_emacs);
2403 #endif
2404
2405 defsubr (&Skill_emacs);
2406
2407 defsubr (&Sinvocation_name);
2408 defsubr (&Sinvocation_directory);
2409 defsubr (&Sdaemonp);
2410 defsubr (&Sdaemon_initialized);
2411
2412 DEFVAR_LISP ("command-line-args", Vcommand_line_args,
2413 doc: /* Args passed by shell to Emacs, as a list of strings.
2414 Many arguments are deleted from the list as they are processed. */);
2415
2416 DEFVAR_LISP ("system-type", Vsystem_type,
2417 doc: /* The value is a symbol indicating the type of operating system you are using.
2418 Special values:
2419 `gnu' compiled for a GNU Hurd system.
2420 `gnu/linux' compiled for a GNU/Linux system.
2421 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2422 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2423 `ms-dos' compiled as an MS-DOS application.
2424 `windows-nt' compiled as a native W32 application.
2425 `cygwin' compiled using the Cygwin library.
2426 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2427 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2428 Vsystem_type = intern_c_string (SYSTEM_TYPE);
2429 /* The above values are from SYSTEM_TYPE in include files under src/s. */
2430
2431 DEFVAR_LISP ("system-configuration", Vsystem_configuration,
2432 doc: /* Value is string indicating configuration Emacs was built for.
2433 On MS-Windows, the value reflects the OS flavor and version on which
2434 Emacs is running. */);
2435 Vsystem_configuration = build_string (EMACS_CONFIGURATION);
2436
2437 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options,
2438 doc: /* String containing the configuration options Emacs was built with. */);
2439 Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS);
2440
2441 DEFVAR_BOOL ("noninteractive", noninteractive1,
2442 doc: /* Non-nil means Emacs is running without interactive terminal. */);
2443
2444 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook,
2445 doc: /* Hook to be run when `kill-emacs' is called.
2446 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2447 in other similar situations), functions placed on this hook should not
2448 expect to be able to interact with the user. To ask for confirmation,
2449 see `kill-emacs-query-functions' instead.
2450
2451 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2452 `noninteractive' was non-nil. */);
2453 Vkill_emacs_hook = Qnil;
2454
2455 DEFVAR_LISP ("path-separator", Vpath_separator,
2456 doc: /* String containing the character that separates directories in
2457 search paths, such as PATH and other similar environment variables. */);
2458 {
2459 char c = SEPCHAR;
2460 Vpath_separator = make_string (&c, 1);
2461 }
2462
2463 DEFVAR_LISP ("invocation-name", Vinvocation_name,
2464 doc: /* The program name that was used to run Emacs.
2465 Any directory names are omitted. */);
2466
2467 DEFVAR_LISP ("invocation-directory", Vinvocation_directory,
2468 doc: /* The directory in which the Emacs executable was found, to run it.
2469 The value is nil if that directory's name is not known. */);
2470
2471 DEFVAR_LISP ("installation-directory", Vinstallation_directory,
2472 doc: /* A directory within which to look for the `lib-src' and `etc' directories.
2473 In an installed Emacs, this is normally nil. It is non-nil if
2474 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2475 within the variable `invocation-directory' or its parent. For example,
2476 this is the case when running an uninstalled Emacs executable from its
2477 build directory. */);
2478 Vinstallation_directory = Qnil;
2479
2480 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale,
2481 doc: /* System locale for messages. */);
2482 Vsystem_messages_locale = Qnil;
2483
2484 DEFVAR_LISP ("previous-system-messages-locale",
2485 Vprevious_system_messages_locale,
2486 doc: /* Most recently used system locale for messages. */);
2487 Vprevious_system_messages_locale = Qnil;
2488
2489 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale,
2490 doc: /* System locale for time. */);
2491 Vsystem_time_locale = Qnil;
2492
2493 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale,
2494 doc: /* Most recently used system locale for time. */);
2495 Vprevious_system_time_locale = Qnil;
2496
2497 DEFVAR_LISP ("before-init-time", Vbefore_init_time,
2498 doc: /* Value of `current-time' before Emacs begins initialization. */);
2499 Vbefore_init_time = Qnil;
2500
2501 DEFVAR_LISP ("after-init-time", Vafter_init_time,
2502 doc: /* Value of `current-time' after loading the init files.
2503 This is nil during initialization. */);
2504 Vafter_init_time = Qnil;
2505
2506 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources,
2507 doc: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2508 inhibit_x_resources = 0;
2509
2510 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright,
2511 doc: /* Short copyright string for this version of Emacs. */);
2512 Vemacs_copyright = build_string (emacs_copyright);
2513
2514 DEFVAR_LISP ("emacs-version", Vemacs_version,
2515 doc: /* Version numbers of this version of Emacs. */);
2516 Vemacs_version = build_string (emacs_version);
2517
2518 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist,
2519 doc: /* Alist of dynamic libraries vs external files implementing them.
2520 Each element is a list (LIBRARY FILE...), where the car is a symbol
2521 representing a supported external library, and the rest are strings giving
2522 alternate filenames for that library.
2523
2524 Emacs tries to load the library from the files in the order they appear on
2525 the list; if none is loaded, the running session of Emacs won't have access
2526 to that library.
2527
2528 Note that image types `pbm' and `xbm' do not need entries in this variable
2529 because they do not depend on external libraries and are always available.
2530
2531 Also note that this is not a generic facility for accessing external
2532 libraries; only those already known by Emacs will be loaded. */);
2533 Vdynamic_library_alist = Qnil;
2534 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable, Qt);
2535
2536 /* Make sure IS_DAEMON starts up as false. */
2537 daemon_pipe[1] = 0;
2538 }