1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2013
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
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.
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.
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/>. */
21 #define INLINE EXTERN_INLINE
27 #include <sys/types.h>
31 #include <close-stream.h>
38 #include <sys/socket.h>
43 #if defined WINDOWSNT || defined HAVE_NTGUI
44 #include "w32select.h"
46 #include "w32common.h"
53 #ifdef HAVE_WINDOW_SYSTEM
55 #endif /* HAVE_WINDOW_SYSTEM */
57 #ifdef NS_IMPL_GNUSTEP
58 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
59 #include <GNUstepBase/GSConfig.h>
63 #include "intervals.h"
64 #include "character.h"
70 #include "blockinput.h"
71 #include "syssignal.h"
74 #include "termhooks.h"
79 #include "composite.h"
80 #include "dispextern.h"
88 #if (defined PROFILING \
89 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
90 # include <sys/gmon.h>
91 extern void moncontrol (int mode
);
100 #include <sys/resource.h>
103 #ifdef HAVE_PERSONALITY_LINUX32
104 #include <sys/personality.h>
107 static const char emacs_version
[] = VERSION
;
108 static const char emacs_copyright
[] = COPYRIGHT
;
110 /* Empty lisp strings. To avoid having to build any others. */
111 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
114 /* Cache for externally loaded libraries. */
115 Lisp_Object Vlibrary_cache
;
118 /* Set after Emacs has started up the first time.
119 Prevents reinitialization of the Lisp world and keymaps
120 on subsequent starts. */
124 extern void unexec_init_emacs_zone (void);
127 #ifdef DOUG_LEA_MALLOC
128 /* Preserves a pointer to the memory allocated that copies that
129 static data inside glibc's malloc. */
130 static void *malloc_state_ptr
;
131 /* From glibc, a routine that returns a copy of the malloc internal state. */
132 extern void *malloc_get_state (void);
133 /* From glibc, a routine that overwrites the malloc internal state. */
134 extern int malloc_set_state (void*);
135 /* True if the MALLOC_CHECK_ environment variable was set while
136 dumping. Used to work around a bug in glibc's malloc. */
137 static bool malloc_using_checking
;
138 #elif defined HAVE_PTHREAD && !defined SYSTEM_MALLOC
139 extern void malloc_enable_thread (void);
142 Lisp_Object Qfile_name_handler_alist
;
144 Lisp_Object Qrisky_local_variable
;
146 Lisp_Object Qkill_emacs
;
147 static Lisp_Object Qkill_emacs_hook
;
149 /* If true, Emacs should not attempt to use a window-specific code,
150 but instead should use the virtual terminal under which it was started. */
151 bool inhibit_window_system
;
153 /* If true, a filter or a sentinel is running. Tested to save the match
154 data on the first attempt to change it inside asynchronous code. */
155 bool running_asynch_code
;
157 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
158 /* If true, -d was specified, meaning we're using some window system. */
162 /* An address near the bottom of the stack.
163 Tells GC how to save a copy of the stack. */
166 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
167 /* The address where the heap starts (from the first sbrk (0) call). */
168 static void *my_heap_start
;
172 /* The gap between BSS end and heap start as far as we can tell. */
173 static uprintmax_t heap_bss_diff
;
176 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
179 On Cocoa, CoreFoundation lib fails in forked process:
180 http://developer.apple.com/ReleaseNotes/
181 CoreFoundation/CoreFoundation.html)
183 On Windows, a Cygwin fork child cannot access the USER subsystem.
185 We mark being in the exec'd process by a daemon name argument of
186 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
187 NAME is the original daemon name, if any. */
188 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
189 # define DAEMON_MUST_EXEC
192 /* True means running Emacs without interactive terminal. */
195 /* True means remove site-lisp directories from load-path. */
198 /* Name for the server started by the daemon.*/
199 static char *daemon_name
;
201 /* Pipe used to send exit notification to the daemon parent at
205 /* Save argv and argc. */
209 static void sort_args (int argc
, char **argv
);
210 static void syms_of_emacs (void);
212 /* C89 needs each string be at most 509 characters, so the usage
213 strings below are split to not overflow this limit. */
214 static char const *const usage_message
[] =
217 Run Emacs, the extensible, customizable, self-documenting real-time\n\
218 display editor. The recommended way to start Emacs for normal editing\n\
219 is with no options at all.\n\
221 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
222 read the main documentation for these command-line arguments.\n\
224 Initialization options:\n\
228 --batch do not do interactive display; implies -q\n\
229 --chdir DIR change to directory DIR\n\
230 --daemon start a server in the background\n\
231 --debug-init enable Emacs Lisp debugger for init file\n\
232 --display, -d DISPLAY use X server DISPLAY\n\
235 --no-desktop do not load a saved desktop\n\
236 --no-init-file, -q load neither ~/.emacs nor default.el\n\
237 --no-shared-memory, -nl do not use shared memory\n\
238 --no-site-file do not load site-start.el\n\
239 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
240 --no-splash do not display a splash screen on startup\n\
241 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
244 --quick, -Q equivalent to:\n\
245 -q --no-site-file --no-site-lisp --no-splash\n\
246 --script FILE run FILE as an Emacs Lisp script\n\
247 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
248 --user, -u USER load ~USER/.emacs instead of your own\n\
254 FILE visit FILE using find-file\n\
255 +LINE go to line LINE in next FILE\n\
256 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
257 --directory, -L DIR prepend DIR to load-path (with :DIR, append DIR)\n\
258 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
259 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
262 --file FILE visit FILE using find-file\n\
263 --find-file FILE visit FILE using find-file\n\
264 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
265 --insert FILE insert contents of FILE into current buffer\n\
266 --kill exit without asking for confirmation\n\
267 --load, -l FILE load Emacs Lisp FILE using the load function\n\
268 --visit FILE visit FILE using find-file\n\
274 --background-color, -bg COLOR window background color\n\
275 --basic-display, -D disable many display features;\n\
276 used for debugging Emacs\n\
277 --border-color, -bd COLOR main border color\n\
278 --border-width, -bw WIDTH width of main border\n\
281 --color, --color=MODE override color mode for character terminals;\n\
282 MODE defaults to `auto', and\n\
283 can also be `never', `always',\n\
284 or a mode name like `ansi8'\n\
285 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
286 --font, -fn FONT default font; must be fixed-width\n\
287 --foreground-color, -fg COLOR window foreground color\n\
290 --fullheight, -fh make the first frame high as the screen\n\
291 --fullscreen, -fs make the first frame fullscreen\n\
292 --fullwidth, -fw make the first frame wide as the screen\n\
293 --maximized, -mm make the first frame maximized\n\
294 --geometry, -g GEOMETRY window geometry\n\
297 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
298 --iconic start Emacs in iconified state\n\
299 --internal-border, -ib WIDTH width between text and main border\n\
300 --line-spacing, -lsp PIXELS additional space to put between lines\n\
301 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
302 --name NAME title for initial Emacs frame\n\
305 --no-blinking-cursor, -nbc disable blinking cursor\n\
306 --reverse-video, -r, -rv switch foreground and background\n\
307 --title, -T TITLE title for initial Emacs frame\n\
308 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
309 --xrm XRESOURCES set additional X resources\n\
310 --parent-id XID set parent window\n\
311 --help display this help and exit\n\
312 --version output version information and exit\n\
316 You can generally also specify long option names with a single -; for\n\
317 example, -batch as well as --batch. You can use any unambiguous\n\
318 abbreviation for a --option.\n\
320 Various environment variables and window system resources also affect\n\
321 the operation of Emacs. See the main documentation.\n\
323 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
324 section of the Emacs manual or the file BUGS.\n"
328 /* True if handling a fatal error already. */
329 bool fatal_error_in_progress
;
332 /* NS autrelease pool, for memory management. */
333 static void *ns_pool
;
338 setlocale (int cat
, char const *locale
)
345 /* Report a fatal error due to signal SIG, output a backtrace of at
346 most BACKTRACE_LIMIT lines, and exit. */
348 terminate_due_to_signal (int sig
, int backtrace_limit
)
350 signal (sig
, SIG_DFL
);
351 totally_unblock_input ();
353 /* If fatal error occurs in code below, avoid infinite recursion. */
354 if (! fatal_error_in_progress
)
356 fatal_error_in_progress
= 1;
358 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
359 Fkill_emacs (make_number (sig
));
361 shut_down_emacs (sig
, Qnil
);
362 emacs_backtrace (backtrace_limit
);
365 /* Signal the same code; this time it will really be fatal.
366 Since we're in a signal handler, the signal is blocked, so we
367 have to unblock it if we want to really receive it. */
371 sigemptyset (&unblocked
);
372 sigaddset (&unblocked
, sig
);
373 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
379 /* This shouldn't be executed, but it prevents a warning. */
383 /* Code for dealing with Lisp access to the Unix command line. */
386 init_cmdargs (int argc
, char **argv
, int skip_args
, char *original_pwd
)
389 Lisp_Object name
, dir
, handler
;
390 ptrdiff_t count
= SPECPDL_INDEX ();
391 Lisp_Object raw_name
;
396 raw_name
= build_unibyte_string (argv
[0]);
398 /* Add /: to the front of the name
399 if it would otherwise be treated as magic. */
400 handler
= Ffind_file_name_handler (raw_name
, Qt
);
401 if (! NILP (handler
))
402 raw_name
= concat2 (build_string ("/:"), raw_name
);
404 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
405 Vinvocation_directory
= Ffile_name_directory (raw_name
);
407 /* If we got no directory in argv[0], search PATH to find where
408 Emacs actually came from. */
409 if (NILP (Vinvocation_directory
))
412 int yes
= openp (Vexec_path
, Vinvocation_name
,
413 Vexec_suffixes
, &found
, make_number (X_OK
));
416 /* Add /: to the front of the name
417 if it would otherwise be treated as magic. */
418 handler
= Ffind_file_name_handler (found
, Qt
);
419 if (! NILP (handler
))
420 found
= concat2 (build_string ("/:"), found
);
421 Vinvocation_directory
= Ffile_name_directory (found
);
425 if (!NILP (Vinvocation_directory
)
426 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
427 /* Emacs was started with relative path, like ./emacs.
431 original_pwd
? build_unibyte_string (original_pwd
) : Qnil
;
433 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, odir
);
436 Vinstallation_directory
= Qnil
;
438 if (!NILP (Vinvocation_directory
))
440 dir
= Vinvocation_directory
;
442 /* If we are running from the build directory, set DIR to the
443 src subdirectory of the Emacs tree, like on Posix
445 if (SBYTES (dir
) > sizeof ("/i386/") - 1
446 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
448 dir
= Fexpand_file_name (build_string ("../.."), dir
);
449 #else /* !WINDOWSNT */
451 name
= Fexpand_file_name (Vinvocation_name
, dir
);
454 Lisp_Object tem
, lib_src_exists
;
455 Lisp_Object etc_exists
, info_exists
;
457 /* See if dir contains subdirs for use by Emacs.
458 Check for the ones that would exist in a build directory,
459 not including lisp and info. */
460 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
461 lib_src_exists
= Ffile_exists_p (tem
);
464 /* MSDOS installations frequently remove lib-src, but we still
465 must set installation-directory, or else info won't find
466 its files (it uses the value of installation-directory). */
467 tem
= Fexpand_file_name (build_string ("info"), dir
);
468 info_exists
= Ffile_exists_p (tem
);
473 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
475 tem
= Fexpand_file_name (build_string ("etc"), dir
);
476 etc_exists
= Ffile_exists_p (tem
);
477 if (!NILP (etc_exists
))
479 Vinstallation_directory
480 = Ffile_name_as_directory (dir
);
485 /* See if dir's parent contains those subdirs. */
486 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
487 lib_src_exists
= Ffile_exists_p (tem
);
491 /* See the MSDOS commentary above. */
492 tem
= Fexpand_file_name (build_string ("../info"), dir
);
493 info_exists
= Ffile_exists_p (tem
);
498 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
500 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
501 etc_exists
= Ffile_exists_p (tem
);
502 if (!NILP (etc_exists
))
504 tem
= Fexpand_file_name (build_string (".."), dir
);
505 Vinstallation_directory
506 = Ffile_name_as_directory (tem
);
511 /* If the Emacs executable is actually a link,
512 next try the dir that the link points into. */
513 tem
= Ffile_symlink_p (name
);
516 name
= Fexpand_file_name (tem
, dir
);
517 dir
= Ffile_name_directory (name
);
524 Vcommand_line_args
= Qnil
;
526 for (i
= argc
- 1; i
>= 0; i
--)
528 if (i
== 0 || i
> skip_args
)
529 /* For the moment, we keep arguments as is in unibyte strings.
530 They are decoded in the function command-line after we know
531 locale-coding-system. */
533 = Fcons (build_unibyte_string (argv
[i
]), Vcommand_line_args
);
536 unbind_to (count
, Qnil
);
539 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
540 doc
: /* Return the program name that was used to run Emacs.
541 Any directory names are omitted. */)
544 return Fcopy_sequence (Vinvocation_name
);
547 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
549 doc
: /* Return the directory name in which the Emacs executable was located. */)
552 return Fcopy_sequence (Vinvocation_directory
);
557 /* A valid but unlikely value for the TZ environment value.
558 It is OK (though a bit slower) if the user actually chooses this value. */
559 static char const dump_tz
[] = "UtC0";
562 /* Test whether the next argument in ARGV matches SSTR or a prefix of
563 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
564 (the argument is supposed to have a value) store in *VALPTR either
565 the next argument or the portion of this one after the equal sign.
566 ARGV is read starting at position *SKIPPTR; this index is advanced
567 by the number of arguments used.
569 Too bad we can't just use getopt for all of this, but we don't have
570 enough information to do it right. */
573 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
574 int minlen
, char **valptr
, int *skipptr
)
580 /* Don't access argv[argc]; give up in advance. */
581 if (argc
<= *skipptr
+ 1)
584 arg
= argv
[*skipptr
+1];
587 if (strcmp (arg
, sstr
) == 0)
591 *valptr
= argv
[*skipptr
+2];
598 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
599 ? p
- arg
: strlen (arg
));
600 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
602 else if (valptr
== NULL
)
613 else if (argv
[*skipptr
+2] != NULL
)
615 *valptr
= argv
[*skipptr
+2];
625 #ifdef DOUG_LEA_MALLOC
627 /* malloc can be invoked even before main (e.g. by the dynamic
628 linker), so the dumped malloc state must be restored as early as
629 possible using this special hook. */
632 malloc_initialize_hook (void)
636 if (!malloc_using_checking
)
637 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
638 ignored if the heap to be restored was constructed without
639 malloc checking. Can't use unsetenv, since that calls malloc. */
643 for (p
= environ
; p
&& *p
; p
++)
644 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
653 malloc_set_state (malloc_state_ptr
);
654 #ifndef XMALLOC_OVERRUN_CHECK
655 free (malloc_state_ptr
);
660 if (my_heap_start
== 0)
661 my_heap_start
= sbrk (0);
662 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
666 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
668 #endif /* DOUG_LEA_MALLOC */
670 /* Close standard output and standard error, reporting any write
671 errors as best we can. This is intended for use with atexit. */
673 close_output_streams (void)
675 if (close_stream (stdout
) != 0)
677 emacs_perror ("Write error to standard output");
678 _exit (EXIT_FAILURE
);
681 if (close_stream (stderr
) != 0)
682 _exit (EXIT_FAILURE
);
687 main (int argc
, char **argv
)
692 char stack_bottom_variable
;
693 bool do_initial_setlocale
;
696 #ifdef HAVE_SETRLIMIT
702 #ifdef DAEMON_MUST_EXEC
707 /* If we use --chdir, this records the original directory. */
708 char *original_pwd
= 0;
714 #ifdef G_SLICE_ALWAYS_MALLOC
715 /* This is used by the Cygwin build. It's not needed starting with
716 cygwin-1.7.24, but it doesn't do any harm. */
717 xputenv ("G_SLICE=always-malloc");
723 extern char my_endbss
[];
724 extern char *my_endbss_static
;
726 if (my_heap_start
== 0)
727 my_heap_start
= sbrk (0);
729 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
733 #if defined WINDOWSNT || defined HAVE_NTGUI
734 /* Set global variables used to detect Windows version. Do this as
735 early as possible. (unexw32.c calls this function as well, but
736 the additional call here is harmless.) */
737 cache_system_info ();
740 #ifdef RUN_TIME_REMAP
742 run_time_remap (argv
[0]);
745 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
748 unexec_init_emacs_zone ();
751 atexit (close_output_streams
);
753 sort_args (argc
, argv
);
755 while (argv
[argc
]) argc
++;
757 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
759 const char *version
, *copyright
;
762 Lisp_Object tem
, tem2
;
763 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
764 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
767 fprintf (stderr
, "Invalid value of `emacs-version'\n");
772 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
777 version
= SSDATA (tem
);
778 copyright
= SSDATA (tem2
);
783 version
= emacs_version
;
784 copyright
= emacs_copyright
;
786 printf ("GNU Emacs %s\n", version
);
787 printf ("%s\n", copyright
);
788 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
789 printf ("You may redistribute copies of Emacs\n");
790 printf ("under the terms of the GNU General Public License.\n");
791 printf ("For more information about these matters, ");
792 printf ("see the file named COPYING.\n");
796 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
798 original_pwd
= get_current_dir_name ();
799 if (chdir (ch_to_dir
) != 0)
801 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
802 argv
[0], ch_to_dir
, strerror (errno
));
807 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
808 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
810 #ifdef HAVE_PERSONALITY_LINUX32
811 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
813 /* Set this so we only do this once. */
814 xputenv ("EMACS_HEAP_EXEC=true");
816 /* A flag to turn off address randomization which is introduced
817 in linux kernel shipped with fedora core 4 */
818 #define ADD_NO_RANDOMIZE 0x0040000
819 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
820 #undef ADD_NO_RANDOMIZE
822 execvp (argv
[0], argv
);
824 /* If the exec fails, try to dump anyway. */
825 emacs_perror (argv
[0]);
827 #endif /* HAVE_PERSONALITY_LINUX32 */
829 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
830 /* Extend the stack space available.
831 Don't do that if dumping, since some systems (e.g. DJGPP)
832 might define a smaller stack limit at that time. */
835 && (!noninteractive
|| initialized
)
837 && !getrlimit (RLIMIT_STACK
, &rlim
))
840 extern size_t re_max_failures
;
841 /* Approximate the amount regex.c needs per unit of re_max_failures. */
842 int ratio
= 20 * sizeof (char *);
843 /* Then add 33% to cover the size of the smaller stacks that regex.c
844 successively allocates and discards, on its way to the maximum. */
846 /* Add in some extra to cover
847 what we're likely to use for other reasons. */
848 newlim
= re_max_failures
* ratio
+ 200000;
850 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
851 stack allocation routine for new process that the allocation
852 fails if stack limit is not on page boundary. So, round up the
853 new limit to page boundary. */
854 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
856 if (newlim
> rlim
.rlim_max
)
858 newlim
= rlim
.rlim_max
;
859 /* Don't let regex.c overflow the stack we have. */
860 re_max_failures
= (newlim
- 200000) / ratio
;
862 if (rlim
.rlim_cur
< newlim
)
863 rlim
.rlim_cur
= newlim
;
865 setrlimit (RLIMIT_STACK
, &rlim
);
867 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
869 /* Record (approximately) where the stack begins. */
870 stack_bottom
= &stack_bottom_variable
;
874 #ifndef SYSTEM_MALLOC
875 /* Arrange to get warning messages as memory fills up. */
876 memory_warnings (0, malloc_warning
);
878 /* Call malloc at least once, to run malloc_initialize_hook.
879 Also call realloc and free for consistency. */
880 free (realloc (malloc (4), 4));
882 #endif /* not SYSTEM_MALLOC */
884 #if defined (MSDOS) || defined (WINDOWSNT)
885 /* We do all file input/output as binary files. When we need to translate
886 newlines, we do that manually. */
888 #endif /* MSDOS || WINDOWSNT */
891 if (!isatty (fileno (stdin
)))
892 setmode (fileno (stdin
), O_BINARY
);
893 if (!isatty (fileno (stdout
)))
896 setmode (fileno (stdout
), O_BINARY
);
900 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
901 The build procedure uses this while dumping, to ensure that the
902 dumped Emacs does not have its system locale tables initialized,
903 as that might cause screwups when the dumped Emacs starts up. */
905 char *lc_all
= getenv ("LC_ALL");
906 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
909 /* Set locale now, so that initial error messages are localized properly.
910 fixup_locale must wait until later, since it builds strings. */
911 if (do_initial_setlocale
)
912 setlocale (LC_ALL
, "");
914 inhibit_window_system
= 0;
916 /* Handle the -t switch, which specifies filename to use as terminal. */
920 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
925 result
= emacs_open (term
, O_RDWR
, 0);
926 if (result
< 0 || fcntl (0, F_DUPFD_CLOEXEC
, 1) < 0)
928 char *errstring
= strerror (errno
);
929 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
934 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
937 fprintf (stderr
, "Using %s\n", term
);
938 #ifdef HAVE_WINDOW_SYSTEM
939 inhibit_window_system
= 1; /* -t => -nw */
946 /* Command line option --no-windows is deprecated and thus not mentioned
947 in the manual and usage information. */
948 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
949 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
950 inhibit_window_system
= 1;
952 /* Handle the -batch switch, which means don't do interactive display. */
954 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
957 Vundo_outer_limit
= Qnil
;
959 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
961 noninteractive
= 1; /* Set batch mode. */
962 /* Convert --script to -scriptload, un-skip it, and sort again
963 so that it will be handled in proper sequence. */
964 /* FIXME broken for --script=FILE - is that supposed to work? */
965 argv
[skip_args
- 1] = (char *) "-scriptload";
967 sort_args (argc
, argv
);
970 /* Handle the --help option, which gives a usage message. */
971 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
974 printf ("Usage: %s [OPTION-OR-FILENAME]...\n", argv
[0]);
975 for (i
= 0; i
< sizeof usage_message
/ sizeof *usage_message
; i
++)
976 fputs (usage_message
[i
], stdout
);
980 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
981 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
986 /* Start as a daemon: fork a new child process which will run the
987 rest of the initialization code, then exit.
989 Detaching a daemon requires the following steps:
993 - close the tty file-descriptors
995 We only want to do the last 2 steps once the daemon is ready to
996 serve requests, i.e. after loading .emacs (initialization).
997 OTOH initialization may start subprocesses (e.g. ispell) and these
998 should be run from the proper process (the one that will end up
999 running as daemon) and with the proper "session id" in order for
1000 them to keep working after detaching, so fork and setsid need to be
1001 performed before initialization.
1003 We want to avoid exiting before the server socket is ready, so
1004 use a pipe for synchronization. The parent waits for the child
1005 to close its end of the pipe (using `daemon-initialized')
1007 if (emacs_pipe (daemon_pipe
) != 0)
1009 fprintf (stderr
, "Cannot pipe!\n");
1013 #ifndef DAEMON_MUST_EXEC
1015 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1016 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1017 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1018 #endif /* USE_GTK */
1020 #else /* DAEMON_MUST_EXEC */
1021 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1022 f
= fork (); /* in orig */
1024 f
= 0; /* in exec'd */
1025 #endif /* !DAEMON_MUST_EXEC */
1031 /* Close unused writing end of the pipe. */
1032 emacs_close (daemon_pipe
[1]);
1034 /* Just wait for the child to close its end of the pipe. */
1037 retval
= read (daemon_pipe
[0], &buf
, 1);
1039 while (retval
== -1 && errno
== EINTR
);
1043 fprintf (stderr
, "Error reading status from child\n");
1046 else if (retval
== 0)
1048 fprintf (stderr
, "Error: server did not start correctly\n");
1052 emacs_close (daemon_pipe
[0]);
1057 emacs_perror ("fork");
1058 exit (EXIT_CANCELED
);
1061 #ifdef DAEMON_MUST_EXEC
1063 /* In orig process, forked as child, OR in exec'd. */
1064 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1065 { /* In orig, child: now exec w/special daemon name. */
1068 snprintf (fdStr
, sizeof fdStr
,
1069 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1070 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1072 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1074 fprintf (stderr
, "daemon: child name too long\n");
1075 exit (EXIT_CANNOT_INVOKE
);
1078 argv
[skip_args
] = fdStr
;
1080 execvp (argv
[0], argv
);
1081 emacs_perror (argv
[0]);
1082 exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
1085 /* In exec'd: parse special dname into pipe and name info. */
1086 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1087 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1089 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1090 exit (EXIT_CANNOT_INVOKE
);
1092 dname_arg2
[0] = '\0';
1093 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1095 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1097 #endif /* DAEMON_MUST_EXEC */
1100 daemon_name
= xstrdup (dname_arg
);
1101 /* Close unused reading end of the pipe. */
1102 emacs_close (daemon_pipe
[0]);
1106 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1111 #if defined HAVE_PTHREAD && !defined SYSTEM_MALLOC && !defined DOUG_LEA_MALLOC
1112 # ifndef CANNOT_DUMP
1113 /* Do not make gmalloc thread-safe when creating bootstrap-emacs, as
1114 that causes an infinite recursive loop with FreeBSD. But do make
1115 it thread-safe when creating emacs, otherwise bootstrap-emacs
1116 fails on Cygwin. See Bug#14569. */
1117 if (!noninteractive
|| initialized
)
1119 malloc_enable_thread ();
1122 init_signals (dumping
);
1124 noninteractive1
= noninteractive
;
1126 /* Perform basic initializations (not merely interning symbols). */
1133 init_charset_once ();
1134 init_coding_once ();
1135 init_syntax_once (); /* Create standard syntax table. */
1136 init_category_once (); /* Create standard category table. */
1137 init_casetab_once (); /* Must be done before init_buffer_once. */
1138 init_buffer_once (); /* Create buffer table and some buffers. */
1139 init_minibuf_once (); /* Create list of minibuffers. */
1140 /* Must precede init_window_once. */
1142 /* Call syms_of_xfaces before init_window_once because that
1143 function creates Vterminal_frame. Termcap frames now use
1144 faces, and the face implementation uses some symbols as
1147 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1148 be better to arrange things not to have this dependency. */
1150 /* Call syms_of_keyboard before init_window_once because
1151 keyboard sets up symbols that include some face names that
1152 the X support will want to use. This can happen when
1153 CANNOT_DUMP is defined. */
1154 syms_of_keyboard ();
1156 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1158 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1160 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1162 /* May call Ffuncall and so GC, thus the latter should be initialized. */
1164 /* Before syms_of_coding because it initializes Qcharsetp. */
1166 /* Before init_window_once, because it sets up the
1167 Vcoding_system_hash_table. */
1168 syms_of_coding (); /* This should be after syms_of_fileio. */
1170 init_window_once (); /* Init the window system. */
1171 #ifdef HAVE_WINDOW_SYSTEM
1172 init_fringe_once (); /* Swap bitmaps if necessary. */
1173 #endif /* HAVE_WINDOW_SYSTEM */
1178 if (do_initial_setlocale
)
1181 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1182 Vsystem_time_locale
= Vprevious_system_time_locale
;
1187 running_asynch_code
= 0;
1191 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1194 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1197 ns_pool
= ns_alloc_autorelease_pool ();
1198 #ifdef NS_IMPL_GNUSTEP
1199 /* GNUStep stupidly resets our locale settings after we made them. */
1203 if (!noninteractive
)
1205 #ifdef NS_IMPL_COCOA
1206 /* Started from GUI? */
1207 /* FIXME: Do the right thing if getenv returns NULL, or if
1209 if (! inhibit_window_system
&& ! isatty (0))
1210 chdir (getenv ("HOME"));
1211 if (skip_args
< argc
)
1213 if (!strncmp (argv
[skip_args
], "-psn", 4))
1216 chdir (getenv ("HOME"));
1218 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1221 chdir (getenv ("HOME"));
1226 #endif /* HAVE_NS */
1228 #ifdef HAVE_X_WINDOWS
1229 /* Stupid kludge to catch command-line display spec. We can't
1230 handle this argument entirely in window system dependent code
1231 because we don't even know which window system dependent code
1232 to run until we've recognized this argument. */
1234 char *displayname
= 0;
1235 int count_before
= skip_args
;
1237 /* Skip any number of -d options, but only use the last one. */
1240 int count_before_this
= skip_args
;
1242 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1244 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1249 count_before
= count_before_this
;
1252 /* If we have the form --display=NAME,
1253 convert it into -d name.
1254 This requires inserting a new element into argv. */
1255 if (displayname
&& count_before
< skip_args
)
1257 if (skip_args
== count_before
+ 1)
1259 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1260 (argc
- (count_before
+ 2)) * sizeof *argv
);
1261 argv
[count_before
+ 2] = displayname
;
1264 argv
[count_before
+ 1] = (char *) "-d";
1269 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1270 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1274 /* Don't actually discard this arg. */
1275 skip_args
= count_before
;
1277 #else /* !HAVE_X_WINDOWS */
1280 int count_before
= skip_args
;
1282 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1283 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1286 skip_args
= count_before
;
1290 /* argmatch must not be used after here,
1291 except when building temacs
1292 because the -d argument has not been skipped in skip_args. */
1295 /* Call early 'cause init_environment needs it. */
1297 /* Set defaults for several environment variables. */
1299 init_environment (argc
, argv
, skip_args
);
1304 #ifdef HAVE_GFILENOTIFY
1305 globals_of_gfilenotify ();
1310 #ifdef HAVE_W32NOTIFY
1311 globals_of_w32notify ();
1313 /* Initialize environment from registry settings. */
1314 init_environment (argv
);
1315 init_ntproc (dumping
); /* must precede init_editfns. */
1318 /* Initialize and GC-protect Vinitial_environment and
1319 Vprocess_environment before set_initial_environment fills them
1322 syms_of_callproc ();
1323 /* egetenv is a pretty low-level facility, which may get called in
1324 many circumstances; it seems flimsy to put off initializing it
1325 until calling init_callproc. Do not do it when dumping. */
1327 set_initial_environment ();
1329 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1330 if this is not done. Do it after set_global_environment so that we
1331 don't pollute Vglobal_environment. */
1332 /* Setting LANG here will defeat the startup locale processing... */
1337 init_buffer (); /* Init default directory of main buffer. */
1339 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1341 /* Must precede init_lread. */
1342 init_cmdargs (argc
, argv
, skip_args
, original_pwd
);
1346 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1347 Lisp_Object old_log_max
;
1348 old_log_max
= Vmessage_log_max
;
1349 XSETFASTINT (Vmessage_log_max
, 0);
1350 message_dolog ("", 0, 1, 0);
1351 Vmessage_log_max
= old_log_max
;
1354 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1358 /* Check to see if Emacs has been installed correctly. */
1359 check_windows_init_file ();
1362 /* Intern the names of all standard functions and variables;
1363 define standard keys. */
1367 /* The basic levels of Lisp must come first. Note that
1368 syms_of_data and some others have already been called. */
1373 syms_of_floatfns ();
1376 syms_of_bytecode ();
1378 syms_of_casefiddle ();
1380 syms_of_category ();
1382 syms_of_character ();
1389 syms_of_filelock ();
1392 /* syms_of_keymap (); */
1400 syms_of_terminal ();
1406 syms_of_textprop ();
1407 syms_of_composite ();
1410 #endif /* WINDOWSNT */
1417 #ifdef HAVE_WINDOW_SYSTEM
1420 #endif /* HAVE_WINDOW_SYSTEM */
1421 #ifdef HAVE_X_WINDOWS
1426 syms_of_xsettings ();
1433 #endif /* HAVE_X_WINDOWS */
1440 syms_of_decompress ();
1450 #endif /* HAVE_NTGUI */
1452 #if defined WINDOWSNT || defined HAVE_NTGUI
1453 syms_of_w32select ();
1460 syms_of_win16select ();
1467 syms_of_nsselect ();
1469 #endif /* HAVE_NS */
1475 #ifdef HAVE_GFILENOTIFY
1476 syms_of_gfilenotify ();
1477 #endif /* HAVE_GFILENOTIFY */
1481 #endif /* HAVE_INOTIFY */
1484 syms_of_dbusbind ();
1485 #endif /* HAVE_DBUS */
1489 #ifdef HAVE_W32NOTIFY
1490 syms_of_w32notify ();
1491 #endif /* HAVE_W32NOTIFY */
1492 #endif /* WINDOWSNT */
1494 syms_of_profiler ();
1496 keys_of_casefiddle ();
1499 keys_of_keyboard ();
1505 /* Initialization that must be done even if the global variable
1506 initialized is non zero. */
1508 globals_of_w32font ();
1509 globals_of_w32fns ();
1510 globals_of_w32menu ();
1511 #endif /* HAVE_NTGUI */
1513 #if defined WINDOWSNT || defined HAVE_NTGUI
1514 globals_of_w32select ();
1520 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1521 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1522 init_keyboard (); /* This too must precede init_sys_modes. */
1523 if (!noninteractive
)
1524 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1527 init_crit (); /* w32notify.c needs this in batch mode. */
1528 #endif /* HAVE_W32NOTIFY */
1530 #ifdef HAVE_WINDOW_SYSTEM
1532 #endif /* HAVE_WINDOW_SYSTEM */
1540 /* Handle -l loadup, args passed by Makefile. */
1541 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1542 Vtop_level
= list2 (intern_c_string ("load"), build_string (file
));
1543 /* Unless next switch is -nl, load "loadup.el" first thing. */
1545 Vtop_level
= list2 (intern_c_string ("load"),
1546 build_string ("loadup.el"));
1553 /* If the execution TZ happens to be the same as the dump TZ,
1554 change it to some other value and then change it back,
1555 to force the underlying implementation to reload the TZ info.
1556 This is needed on implementations that load TZ info from files,
1557 since the TZ file contents may differ between dump and execution. */
1558 char *tz
= getenv ("TZ");
1559 if (tz
&& !strcmp (tz
, dump_tz
))
1569 /* Set up for profiling. This is known to work on FreeBSD,
1570 GNU/Linux and MinGW. It might work on some other systems too.
1571 Give it a try and tell us if it works on your system. To compile
1572 for profiling, use the configure option --enable-profiling. */
1573 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1578 extern unsigned char etext
asm ("etext");
1584 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1593 #ifdef LOCALTIME_CACHE
1594 /* Some versions of localtime have a bug. They cache the value of the time
1595 zone rather than looking it up every time. Since localtime() is
1596 called to bolt the undumping time into the undumped emacs, this
1597 results in localtime ignoring the TZ environment variable.
1598 This flushes the new TZ value into localtime. */
1600 #endif /* defined (LOCALTIME_CACHE) */
1602 /* Enter editor command loop. This never returns. */
1608 /* Sort the args so we can find the most important ones
1609 at the beginning of argv. */
1611 /* First, here's a table of all the standard options. */
1613 struct standard_args
1616 const char *longname
;
1621 static const struct standard_args standard_args
[] =
1623 { "-version", "--version", 150, 0 },
1624 { "-chdir", "--chdir", 130, 1 },
1625 { "-t", "--terminal", 120, 1 },
1626 { "-nw", "--no-window-system", 110, 0 },
1627 { "-nw", "--no-windows", 110, 0 },
1628 { "-batch", "--batch", 100, 0 },
1629 { "-script", "--script", 100, 1 },
1630 { "-daemon", "--daemon", 99, 0 },
1631 { "-help", "--help", 90, 0 },
1632 { "-nl", "--no-loadup", 70, 0 },
1633 { "-nsl", "--no-site-lisp", 65, 0 },
1634 /* -d must come last before the options handled in startup.el. */
1635 { "-d", "--display", 60, 1 },
1636 { "-display", 0, 60, 1 },
1637 /* Now for the options handled in `command-line' (startup.el). */
1638 /* (Note that to imply -nsl, -Q is partially handled here.) */
1639 { "-Q", "--quick", 55, 0 },
1640 { "-quick", 0, 55, 0 },
1641 { "-q", "--no-init-file", 50, 0 },
1642 { "-no-init-file", 0, 50, 0 },
1643 { "-no-site-file", "--no-site-file", 40, 0 },
1644 { "-u", "--user", 30, 1 },
1645 { "-user", 0, 30, 1 },
1646 { "-debug-init", "--debug-init", 20, 0 },
1647 { "-iconic", "--iconic", 15, 0 },
1648 { "-D", "--basic-display", 12, 0},
1649 { "-basic-display", 0, 12, 0},
1650 { "-nbc", "--no-blinking-cursor", 12, 0 },
1651 /* Now for the options handled in `command-line-1' (startup.el). */
1652 { "-nbi", "--no-bitmap-icon", 10, 0 },
1653 { "-bg", "--background-color", 10, 1 },
1654 { "-background", 0, 10, 1 },
1655 { "-fg", "--foreground-color", 10, 1 },
1656 { "-foreground", 0, 10, 1 },
1657 { "-bd", "--border-color", 10, 1 },
1658 { "-bw", "--border-width", 10, 1 },
1659 { "-ib", "--internal-border", 10, 1 },
1660 { "-ms", "--mouse-color", 10, 1 },
1661 { "-cr", "--cursor-color", 10, 1 },
1662 { "-fn", "--font", 10, 1 },
1663 { "-font", 0, 10, 1 },
1664 { "-fs", "--fullscreen", 10, 0 },
1665 { "-fw", "--fullwidth", 10, 0 },
1666 { "-fh", "--fullheight", 10, 0 },
1667 { "-mm", "--maximized", 10, 0 },
1668 { "-g", "--geometry", 10, 1 },
1669 { "-geometry", 0, 10, 1 },
1670 { "-T", "--title", 10, 1 },
1671 { "-title", 0, 10, 1 },
1672 { "-name", "--name", 10, 1 },
1673 { "-xrm", "--xrm", 10, 1 },
1674 { "-parent-id", "--parent-id", 10, 1 },
1675 { "-r", "--reverse-video", 5, 0 },
1677 { "-reverse", 0, 5, 0 },
1678 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1679 { "-vb", "--vertical-scroll-bars", 5, 0 },
1680 { "-color", "--color", 5, 0},
1681 { "-no-splash", "--no-splash", 3, 0 },
1682 { "-no-desktop", "--no-desktop", 3, 0 },
1684 { "-NSAutoLaunch", 0, 5, 1 },
1685 { "-NXAutoLaunch", 0, 5, 1 },
1686 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1687 { "-_NSMachLaunch", 0, 85, 1 },
1688 { "-MachLaunch", 0, 85, 1 },
1689 { "-macosx", 0, 85, 0 },
1690 { "-NSHost", 0, 85, 1 },
1692 /* These have the same priority as ordinary file name args,
1693 so they are not reordered with respect to those. */
1694 { "-L", "--directory", 0, 1 },
1695 { "-directory", 0, 0, 1 },
1696 { "-l", "--load", 0, 1 },
1697 { "-load", 0, 0, 1 },
1698 /* This has no longname, because using --scriptload confuses sort_args,
1699 because then the --script long option seems to match twice; ie
1700 you can't have a long option which is a prefix of another long
1701 option. In any case, this is entirely an internal option. */
1702 { "-scriptload", NULL
, 0, 1 },
1703 { "-f", "--funcall", 0, 1 },
1704 { "-funcall", 0, 0, 1 },
1705 { "-eval", "--eval", 0, 1 },
1706 { "-execute", "--execute", 0, 1 },
1707 { "-find-file", "--find-file", 0, 1 },
1708 { "-visit", "--visit", 0, 1 },
1709 { "-file", "--file", 0, 1 },
1710 { "-insert", "--insert", 0, 1 },
1712 { "-NXOpen", 0, 0, 1 },
1713 { "-NXOpenTemp", 0, 0, 1 },
1714 { "-NSOpen", 0, 0, 1 },
1715 { "-NSOpenTemp", 0, 0, 1 },
1716 { "-GSFilePath", 0, 0, 1 },
1718 /* This should be processed after ordinary file name args and the like. */
1719 { "-kill", "--kill", -10, 0 },
1722 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1723 so that the highest priority ones come first.
1724 Do not change the order of elements of equal priority.
1725 If an option takes an argument, keep it and its argument together.
1727 If an option that takes no argument appears more
1728 than once, eliminate all but one copy of it. */
1731 sort_args (int argc
, char **argv
)
1733 char **new = xmalloc (argc
* sizeof *new);
1734 /* For each element of argv,
1735 the corresponding element of options is:
1736 0 for an option that takes no arguments,
1737 1 for an option that takes one argument, etc.
1738 -1 for an ordinary non-option argument. */
1739 int *options
= xnmalloc (argc
, sizeof *options
);
1740 int *priority
= xnmalloc (argc
, sizeof *priority
);
1742 int incoming_used
= 1;
1746 /* Categorize all the options,
1747 and figure out which argv elts are option arguments. */
1748 for (from
= 1; from
< argc
; from
++)
1752 if (argv
[from
][0] == '-')
1756 /* If we have found "--", don't consider
1757 any more arguments as options. */
1758 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1760 /* Leave the "--", and everything following it, at the end. */
1761 for (; from
< argc
; from
++)
1763 priority
[from
] = -100;
1769 /* Look for a match with a known old-fashioned option. */
1770 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1771 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1773 options
[from
] = standard_args
[i
].nargs
;
1774 priority
[from
] = standard_args
[i
].priority
;
1775 if (from
+ standard_args
[i
].nargs
>= argc
)
1776 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1777 from
+= standard_args
[i
].nargs
;
1781 /* Look for a match with a known long option.
1782 MATCH is -1 if no match so far, -2 if two or more matches so far,
1783 >= 0 (the table index of the match) if just one match so far. */
1784 if (argv
[from
][1] == '-')
1786 char const *equals
= strchr (argv
[from
], '=');
1788 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1793 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1794 if (standard_args
[i
].longname
1795 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1804 /* If we found exactly one match, use that. */
1807 options
[from
] = standard_args
[match
].nargs
;
1808 priority
[from
] = standard_args
[match
].priority
;
1809 /* If --OPTION=VALUE syntax is used,
1810 this option uses just one argv element. */
1813 if (from
+ options
[from
] >= argc
)
1814 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1815 from
+= options
[from
];
1817 /* FIXME When match < 0, shouldn't there be some error,
1818 or at least indication to the user that there was a
1825 /* Copy the arguments, in order of decreasing priority, to NEW. */
1827 while (incoming_used
< argc
)
1830 int best_priority
= -9999;
1832 /* Find the highest priority remaining option.
1833 If several have equal priority, take the first of them. */
1834 for (from
= 1; from
< argc
; from
++)
1836 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1838 best_priority
= priority
[from
];
1841 /* Skip option arguments--they are tied to the options. */
1842 if (options
[from
] > 0)
1843 from
+= options
[from
];
1849 /* Copy the highest priority remaining option, with its args, to NEW.
1850 Unless it is a duplicate of the previous one. */
1851 if (! (options
[best
] == 0
1852 && ! strcmp (new[to
- 1], argv
[best
])))
1854 new[to
++] = argv
[best
];
1855 for (i
= 0; i
< options
[best
]; i
++)
1856 new[to
++] = argv
[best
+ i
+ 1];
1859 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1861 /* Clear out this option in ARGV. */
1863 for (i
= 0; i
< options
[best
]; i
++)
1864 argv
[best
+ i
+ 1] = 0;
1867 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1871 memcpy (argv
, new, sizeof (char *) * argc
);
1878 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1879 doc
: /* Exit the Emacs job and kill it.
1880 If ARG is an integer, return ARG as the exit program code.
1881 If ARG is a string, stuff it as keyboard input.
1883 This function is called upon receipt of the signals SIGTERM
1884 or SIGHUP, and upon SIGINT in batch mode.
1886 The value of `kill-emacs-hook', if not void,
1887 is a list of functions (of no args),
1888 all of which are called before Emacs is actually killed. */)
1891 struct gcpro gcpro1
;
1899 /* Fsignal calls emacs_abort () if it sees that waiting_for_input is
1901 waiting_for_input
= 0;
1902 Frun_hooks (1, &Qkill_emacs_hook
);
1905 #ifdef HAVE_X_WINDOWS
1906 /* Transfer any clipboards we own to the clipboard manager. */
1907 x_clipboard_manager_save_all ();
1910 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1913 ns_release_autorelease_pool (ns_pool
);
1916 /* If we have an auto-save list file,
1917 kill it because we are exiting Emacs deliberately (not crashing).
1918 Do it after shut_down_emacs, which does an auto-save. */
1919 if (STRINGP (Vauto_save_list_file_name
))
1921 Lisp_Object listfile
;
1922 listfile
= Fexpand_file_name (Vauto_save_list_file_name
, Qnil
);
1923 unlink (SSDATA (listfile
));
1927 exit_code
= (XINT (arg
) < 0
1928 ? XINT (arg
) | INT_MIN
1929 : XINT (arg
) & INT_MAX
);
1931 exit_code
= EXIT_SUCCESS
;
1936 /* Perform an orderly shutdown of Emacs. Autosave any modified
1937 buffers, kill any child processes, clean up the terminal modes (if
1938 we're in the foreground), and other stuff like that. Don't perform
1939 any redisplay; this may be called when Emacs is shutting down in
1940 the background, or after its X connection has died.
1942 If SIG is a signal number, print a message for it.
1944 This is called by fatal signal handlers, X protocol error handlers,
1948 shut_down_emacs (int sig
, Lisp_Object stuff
)
1950 /* Prevent running of hooks from now on. */
1953 /* Don't update display from now on. */
1954 Vinhibit_redisplay
= Qt
;
1956 /* If we are controlling the terminal, reset terminal modes. */
1959 pid_t pgrp
= getpgrp ();
1960 pid_t tpgrp
= tcgetpgrp (0);
1961 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1963 reset_all_sys_modes ();
1964 if (sig
&& sig
!= SIGTERM
)
1966 static char const format
[] = "Fatal error %d: ";
1967 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1968 int buflen
= sprintf (buf
, format
, sig
);
1969 char const *sig_desc
= safe_strsignal (sig
);
1970 emacs_write (STDERR_FILENO
, buf
, buflen
);
1971 emacs_write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
));
1977 reset_all_sys_modes ();
1980 stuff_buffered_input (stuff
);
1982 inhibit_sentinels
= 1;
1983 kill_buffer_processes (Qnil
);
1984 Fdo_auto_save (Qt
, Qnil
);
1986 #ifdef CLASH_DETECTION
1987 unlock_all_files ();
1990 /* There is a tendency for a SIGIO signal to arrive within exit,
1991 and cause a SIGHUP because the input descriptor is already closed. */
1995 /* Do this only if terminating normally, we want glyph matrices
1996 etc. in a core dump. */
1997 if (sig
== 0 || sig
== SIGTERM
)
1999 check_glyph_memory ();
2000 check_message_stack ();
2008 ns_term_shutdown (sig
);
2012 xml_cleanup_parser ();
2026 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2027 doc
: /* Dump current state of Emacs into executable file FILENAME.
2028 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2029 This is used in the file `loadup.el' when building Emacs.
2031 You must run Emacs in batch mode in order to dump it. */)
2032 (Lisp_Object filename
, Lisp_Object symfile
)
2036 ptrdiff_t count
= SPECPDL_INDEX ();
2040 if (! noninteractive
)
2041 error ("Dumping Emacs works only in batch mode");
2045 /* Warn if the gap between BSS end and heap start is larger than this. */
2046 # define MAX_HEAP_BSS_DIFF (1024*1024)
2048 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2050 fprintf (stderr
, "**************************************************\n");
2051 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2052 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2054 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2055 fprintf (stderr
, "fail because of this. See the section about\n");
2056 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2057 fprintf (stderr
, "**************************************************\n");
2059 #endif /* GNU_LINUX */
2061 /* Bind `command-line-processed' to nil before dumping,
2062 so that the dumped Emacs will process its command line
2063 and set up to work with X windows if appropriate. */
2064 symbol
= intern ("command-line-processed");
2065 specbind (symbol
, Qnil
);
2067 CHECK_STRING (filename
);
2068 filename
= Fexpand_file_name (filename
, Qnil
);
2069 filename
= ENCODE_FILE (filename
);
2070 if (!NILP (symfile
))
2072 CHECK_STRING (symfile
);
2073 if (SCHARS (symfile
))
2075 symfile
= Fexpand_file_name (symfile
, Qnil
);
2076 symfile
= ENCODE_FILE (symfile
);
2081 Vpurify_flag
= Qnil
;
2084 set_time_zone_rule (dump_tz
);
2085 #ifndef LOCALTIME_CACHE
2086 /* Force a tz reload, since set_time_zone_rule doesn't. */
2092 /* Tell malloc where start of impure now is. */
2093 /* Also arrange for warnings when nearly out of space. */
2094 #ifndef SYSTEM_MALLOC
2096 /* On Windows, this was done before dumping, and that once suffices.
2097 Meanwhile, my_edata is not valid on Windows. */
2099 extern char my_edata
[];
2100 memory_warnings (my_edata
, malloc_warning
);
2102 #endif /* not WINDOWSNT */
2103 #endif /* not SYSTEM_MALLOC */
2104 #ifdef DOUG_LEA_MALLOC
2105 malloc_state_ptr
= malloc_get_state ();
2108 #ifdef USE_MMAP_FOR_BUFFERS
2111 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2112 #ifdef USE_MMAP_FOR_BUFFERS
2115 #ifdef DOUG_LEA_MALLOC
2116 free (malloc_state_ptr
);
2120 Vlibrary_cache
= Qnil
;
2122 #ifdef HAVE_WINDOW_SYSTEM
2123 reset_image_types ();
2128 return unbind_to (count
, Qnil
);
2131 #endif /* not CANNOT_DUMP */
2134 /* Recover from setlocale (LC_ALL, ""). */
2138 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2139 so that numbers are read and printed properly for Emacs Lisp. */
2140 setlocale (LC_NUMERIC
, "C");
2143 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2146 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2148 if (! EQ (*plocale
, desired_locale
))
2150 *plocale
= desired_locale
;
2151 setlocale (category
, (STRINGP (desired_locale
)
2152 ? SSDATA (desired_locale
)
2157 /* Set system time locale to match Vsystem_time_locale, if possible. */
2159 synchronize_system_time_locale (void)
2161 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2162 Vsystem_time_locale
);
2165 /* Set system messages locale to match Vsystem_messages_locale, if
2168 synchronize_system_messages_locale (void)
2171 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2172 Vsystem_messages_locale
);
2175 #endif /* HAVE_SETLOCALE */
2179 decode_env_path (const char *evarname
, const char *defalt
, bool empty
)
2181 const char *path
, *p
;
2182 Lisp_Object lpath
, element
, tem
;
2183 /* Default is to use "." for empty path elements.
2184 But if argument EMPTY is true, use nil instead. */
2185 Lisp_Object empty_element
= empty
? Qnil
: build_string (".");
2188 const char *emacs_dir
= egetenv ("emacs_dir");
2189 static const char *emacs_dir_env
= "%emacs_dir%/";
2190 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2193 /* It's okay to use getenv here, because this function is only used
2194 to initialize variables when Emacs starts up, and isn't called
2197 path
= getenv (evarname
);
2208 /* Ensure values from the environment use the proper directory separator. */
2211 char *path_copy
= alloca (strlen (path
) + 1);
2212 strcpy (path_copy
, path
);
2213 dostounix_filename (path_copy
, 0);
2220 p
= strchr (path
, SEPCHAR
);
2222 p
= path
+ strlen (path
);
2223 element
= (p
- path
? make_unibyte_string (path
, p
- path
)
2225 if (! NILP (element
))
2228 /* Relative file names in the default path are interpreted as
2229 being relative to $emacs_dir. */
2230 if (emacs_dir
&& defaulted
2231 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2232 element
= Fexpand_file_name (Fsubstring
2234 make_number (emacs_dir_len
),
2236 build_unibyte_string (emacs_dir
));
2239 /* Add /: to the front of the name
2240 if it would otherwise be treated as magic. */
2241 tem
= Ffind_file_name_handler (element
, Qt
);
2243 /* However, if the handler says "I'm safe",
2244 don't bother adding /:. */
2248 prop
= Fget (tem
, intern ("safe-magic"));
2254 element
= concat2 (build_string ("/:"), element
);
2255 } /* !NILP (element) */
2257 lpath
= Fcons (element
, lpath
);
2263 return Fnreverse (lpath
);
2266 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2267 doc
: /* Return non-nil if the current emacs process is a daemon.
2268 If the daemon was given a name argument, return that name. */)
2273 return build_string (daemon_name
);
2280 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2281 doc
: /* Mark the Emacs daemon as being initialized.
2282 This finishes the daemonization process by doing the other half of detaching
2283 from the parent process and its tty file descriptors. */)
2290 error ("This function can only be called if emacs is run as a daemon");
2292 if (daemon_pipe
[1] < 0)
2293 error ("The daemon has already been initialized");
2295 if (NILP (Vafter_init_time
))
2296 error ("This function can only be called after loading the init files");
2298 /* Get rid of stdin, stdout and stderr. */
2299 nfd
= emacs_open ("/dev/null", O_RDWR
, 0);
2301 err
|= dup2 (nfd
, 0) < 0;
2302 err
|= dup2 (nfd
, 1) < 0;
2303 err
|= dup2 (nfd
, 2) < 0;
2304 err
|= emacs_close (nfd
) != 0;
2306 /* Closing the pipe will notify the parent that it can exit.
2307 FIXME: In case some other process inherited the pipe, closing it here
2308 won't notify the parent because it's still open elsewhere, so we
2309 additionally send a byte, just to make sure the parent really exits.
2310 Instead, we should probably close the pipe in start-process and
2311 call-process to make sure the pipe is never inherited by
2313 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2314 err
|= emacs_close (daemon_pipe
[1]) != 0;
2315 /* Set it to an invalid value so we know we've already run this function. */
2316 daemon_pipe
[1] = -1;
2319 error ("I/O error during daemon initialization");
2324 syms_of_emacs (void)
2326 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2327 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2328 DEFSYM (Qkill_emacs
, "kill-emacs");
2329 DEFSYM (Qkill_emacs_hook
, "kill-emacs-hook");
2332 defsubr (&Sdump_emacs
);
2335 defsubr (&Skill_emacs
);
2337 defsubr (&Sinvocation_name
);
2338 defsubr (&Sinvocation_directory
);
2339 defsubr (&Sdaemonp
);
2340 defsubr (&Sdaemon_initialized
);
2342 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2343 doc
: /* Args passed by shell to Emacs, as a list of strings.
2344 Many arguments are deleted from the list as they are processed. */);
2346 DEFVAR_LISP ("system-type", Vsystem_type
,
2347 doc
: /* The value is a symbol indicating the type of operating system you are using.
2349 `gnu' compiled for a GNU Hurd system.
2350 `gnu/linux' compiled for a GNU/Linux system.
2351 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2352 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2353 `ms-dos' compiled as an MS-DOS application.
2354 `windows-nt' compiled as a native W32 application.
2355 `cygwin' compiled using the Cygwin library.
2356 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2357 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2358 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2359 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2361 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2362 doc
: /* Value is string indicating configuration Emacs was built for.
2363 On MS-Windows, the value reflects the OS flavor and version on which
2364 Emacs is running. */);
2365 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2367 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2368 doc
: /* String containing the configuration options Emacs was built with. */);
2369 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2371 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2372 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2374 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2375 doc
: /* Hook run when `kill-emacs' is called.
2376 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2377 in other similar situations), functions placed on this hook should not
2378 expect to be able to interact with the user. To ask for confirmation,
2379 see `kill-emacs-query-functions' instead.
2381 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2382 `noninteractive' was non-nil. */);
2383 Vkill_emacs_hook
= Qnil
;
2385 DEFVAR_LISP ("path-separator", Vpath_separator
,
2386 doc
: /* String containing the character that separates directories in
2387 search paths, such as PATH and other similar environment variables. */);
2390 Vpath_separator
= make_string (&c
, 1);
2393 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2394 doc
: /* The program name that was used to run Emacs.
2395 Any directory names are omitted. */);
2397 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2398 doc
: /* The directory in which the Emacs executable was found, to run it.
2399 The value is nil if that directory's name is not known. */);
2401 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2402 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2403 In an installed Emacs, this is normally nil. It is non-nil if
2404 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2405 within the variable `invocation-directory' or its parent. For example,
2406 this is the case when running an uninstalled Emacs executable from its
2407 build directory. */);
2408 Vinstallation_directory
= Qnil
;
2410 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2411 doc
: /* System locale for messages. */);
2412 Vsystem_messages_locale
= Qnil
;
2414 DEFVAR_LISP ("previous-system-messages-locale",
2415 Vprevious_system_messages_locale
,
2416 doc
: /* Most recently used system locale for messages. */);
2417 Vprevious_system_messages_locale
= Qnil
;
2419 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2420 doc
: /* System locale for time. */);
2421 Vsystem_time_locale
= Qnil
;
2423 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2424 doc
: /* Most recently used system locale for time. */);
2425 Vprevious_system_time_locale
= Qnil
;
2427 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2428 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2429 Vbefore_init_time
= Qnil
;
2431 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2432 doc
: /* Value of `current-time' after loading the init files.
2433 This is nil during initialization. */);
2434 Vafter_init_time
= Qnil
;
2436 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2437 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2438 inhibit_x_resources
= 0;
2440 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2441 doc
: /* Short copyright string for this version of Emacs. */);
2442 Vemacs_copyright
= build_string (emacs_copyright
);
2444 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2445 doc
: /* Version numbers of this version of Emacs. */);
2446 Vemacs_version
= build_string (emacs_version
);
2448 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2449 doc
: /* Alist of dynamic libraries vs external files implementing them.
2450 Each element is a list (LIBRARY FILE...), where the car is a symbol
2451 representing a supported external library, and the rest are strings giving
2452 alternate filenames for that library.
2454 Emacs tries to load the library from the files in the order they appear on
2455 the list; if none is loaded, the running session of Emacs won't have access
2458 Note that image types `pbm' and `xbm' do not need entries in this variable
2459 because they do not depend on external libraries and are always available.
2461 Also note that this is not a generic facility for accessing external
2462 libraries; only those already known by Emacs will be loaded. */);
2463 Vdynamic_library_alist
= Qnil
;
2464 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2467 Vlibrary_cache
= Qnil
;
2468 staticpro (&Vlibrary_cache
);
2471 /* Make sure IS_DAEMON starts up as false. */