1/* Fully extensible Emacs, running on Unix, intended for GNU. 2 Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1997, 1998, 1999, 3 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. 4 5This file is part of GNU Emacs. 6 7GNU Emacs is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GNU Emacs is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GNU Emacs; see the file COPYING. If not, write to 19the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20Boston, MA 02110-1301, USA. */ 21 22 23#include <config.h> 24#include <signal.h> 25#include <errno.h> 26#include <stdio.h> 27 28#include <sys/types.h> 29#include <sys/file.h> 30 31#ifdef VMS 32#include <ssdef.h> 33#endif 34 35#ifdef HAVE_UNISTD_H 36#include <unistd.h> 37#endif 38 39#ifdef BSD_SYSTEM 40#include <sys/ioctl.h> 41#endif 42 43#ifdef WINDOWSNT 44#include <fcntl.h> 45#include <windows.h> /* just for w32.h */ 46#include "w32.h" 47#include "w32heap.h" /* for prototype of sbrk */ 48#endif 49 50#include "lisp.h" 51#include "commands.h" 52#include "intervals.h" 53#include "buffer.h" 54#include "window.h" 55 56#include "systty.h" 57#include "blockinput.h" 58#include "syssignal.h" 59#include "process.h" 60#include "termhooks.h" 61#include "keyboard.h" 62#include "keymap.h" 63 64#ifdef HAVE_SETLOCALE 65#include <locale.h> 66#endif 67 68#ifdef HAVE_SETRLIMIT 69#include <sys/time.h> 70#include <sys/resource.h> 71#endif 72 73#ifdef HAVE_PERSONALITY_LINUX32 74#include <sys/personality.h> 75#endif 76 77#ifndef O_RDWR 78#define O_RDWR 2 79#endif 80 81#ifdef HAVE_SETPGID 82#if !defined (USG) || defined (BSD_PGRPS) 83#undef setpgrp 84#define setpgrp setpgid 85#endif 86#endif 87 88extern void malloc_warning P_ ((char *)); 89extern void set_time_zone_rule P_ ((char *)); 90#ifdef HAVE_INDEX 91extern char *index P_ ((const char *, int)); 92#endif 93 94/* Make these values available in GDB, which doesn't see macros. */ 95 96#ifdef USE_LSB_TAG 97int gdb_use_lsb = 1; 98#else 99int gdb_use_lsb = 0; 100#endif 101#ifdef NO_UNION_TYPE 102int gdb_use_union = 0; 103#else 104int gdb_use_union = 1; 105#endif 106EMACS_INT gdb_valbits = VALBITS; 107EMACS_INT gdb_gctypebits = GCTYPEBITS; 108#ifdef DATA_SEG_BITS 109EMACS_INT gdb_data_seg_bits = DATA_SEG_BITS; 110#else 111EMACS_INT gdb_data_seg_bits = 0; 112#endif 113EMACS_INT PVEC_FLAG = PSEUDOVECTOR_FLAG; 114EMACS_INT gdb_array_mark_flag = ARRAY_MARK_FLAG; 115/* GDB might say "No enum type named pvec_type" if we don't have at 116 least one symbol with that type, and then xbacktrace could fail. */ 117enum pvec_type gdb_pvec_type = PVEC_TYPE_MASK; 118 119/* Command line args from shell, as list of strings. */ 120Lisp_Object Vcommand_line_args; 121 122/* The name under which Emacs was invoked, with any leading directory 123 names discarded. */ 124Lisp_Object Vinvocation_name; 125 126/* The directory name from which Emacs was invoked. */ 127Lisp_Object Vinvocation_directory; 128 129/* The directory name in which to find subdirs such as lisp and etc. 130 nil means get them only from PATH_LOADSEARCH. */ 131Lisp_Object Vinstallation_directory; 132 133/* Hook run by `kill-emacs' before it does really anything. */ 134Lisp_Object Vkill_emacs_hook; 135 136/* An empty lisp string. To avoid having to build any other. */ 137Lisp_Object empty_string; 138 139/* Search path separator. */ 140Lisp_Object Vpath_separator; 141 142/* Set nonzero after Emacs has started up the first time. 143 Prevents reinitialization of the Lisp world and keymaps 144 on subsequent starts. */ 145int initialized; 146 147#ifdef DOUG_LEA_MALLOC 148/* Preserves a pointer to the memory allocated that copies that 149 static data inside glibc's malloc. */ 150void *malloc_state_ptr; 151/* From glibc, a routine that returns a copy of the malloc internal state. */ 152extern void *malloc_get_state (); 153/* From glibc, a routine that overwrites the malloc internal state. */ 154extern int malloc_set_state (); 155/* Non-zero if the MALLOC_CHECK_ enviroment variable was set while 156 dumping. Used to work around a bug in glibc's malloc. */ 157int malloc_using_checking; 158#endif 159 160/* Variable whose value is symbol giving operating system type. */ 161Lisp_Object Vsystem_type; 162 163/* Variable whose value is string giving configuration built for. */ 164Lisp_Object Vsystem_configuration; 165 166/* Variable whose value is string giving configuration options, 167 for use when reporting bugs. */ 168Lisp_Object Vsystem_configuration_options; 169 170Lisp_Object Qfile_name_handler_alist; 171 172/* Current and previous system locales for messages and time. */ 173Lisp_Object Vsystem_messages_locale; 174Lisp_Object Vprevious_system_messages_locale; 175Lisp_Object Vsystem_time_locale; 176Lisp_Object Vprevious_system_time_locale; 177 178/* If non-zero, emacs should not attempt to use a window-specific code, 179 but instead should use the virtual terminal under which it was started. */ 180int inhibit_window_system; 181 182/* If nonzero, set Emacs to run at this priority. This is also used 183 in child_setup and sys_suspend to make sure subshells run at normal 184 priority; those functions have their own extern declaration. */ 185EMACS_INT emacs_priority; 186 187/* If non-zero, a filter or a sentinel is running. Tested to save the match 188 data on the first attempt to change it inside asynchronous code. */ 189int running_asynch_code; 190 191#ifdef BSD_PGRPS 192/* See sysdep.c. */ 193extern int inherited_pgroup; 194#endif 195 196#ifdef HAVE_X_WINDOWS 197/* If non-zero, -d was specified, meaning we're using some window system. */ 198int display_arg; 199#endif 200 201/* An address near the bottom of the stack. 202 Tells GC how to save a copy of the stack. */ 203char *stack_bottom; 204 205/* The address where the heap starts (from the first sbrk (0) call). */ 206static void *my_heap_start; 207 208/* The gap between BSS end and heap start as far as we can tell. */ 209static unsigned long heap_bss_diff; 210 211/* If the gap between BSS end and heap start is larger than this we try to 212 work around it, and if that fails, output a warning in dump-emacs. */ 213#define MAX_HEAP_BSS_DIFF (1024*1024) 214 215 216#ifdef HAVE_WINDOW_SYSTEM 217extern Lisp_Object Vwindow_system; 218#endif /* HAVE_WINDOW_SYSTEM */ 219 220extern Lisp_Object Vauto_save_list_file_name; 221 222extern Lisp_Object Vinhibit_redisplay; 223 224#ifdef USG_SHARED_LIBRARIES 225/* If nonzero, this is the place to put the end of the writable segment 226 at startup. */ 227 228unsigned int bss_end = 0; 229#endif 230 231/* Nonzero means running Emacs without interactive terminal. */ 232 233int noninteractive; 234 235/* Value of Lisp variable `noninteractive'. 236 Normally same as C variable `noninteractive' 237 but nothing terrible happens if user sets this one. */ 238 239int noninteractive1; 240 241/* Save argv and argc. */ 242char **initial_argv; 243int initial_argc; 244 245static void sort_args (); 246void syms_of_emacs (); 247 248/* MSVC needs each string be shorter than 2048 bytes, so the usage 249 strings below are split to not overflow this limit. */ 250#define USAGE1 "\ 251Usage: %s [OPTION-OR-FILENAME]...\n\ 252\n\ 253Run Emacs, the extensible, customizable, self-documenting real-time\n\ 254display editor. The recommended way to start Emacs for normal editing\n\ 255is with no options at all.\n\ 256\n\ 257Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\ 258read the main documentation for these command-line arguments.\n\ 259\n\ 260Initialization options:\n\ 261\n\ 262--batch do not do interactive display; implies -q\n\ 263--debug-init enable Emacs Lisp debugger for init file\n\ 264--display, -d DISPLAY use X server DISPLAY\n\ 265--multibyte, --no-unibyte inhibit the effect of EMACS_UNIBYTE\n\ 266--no-desktop do not load a saved desktop\n\ 267--no-init-file, -q load neither ~/.emacs nor default.el\n\ 268--no-shared-memory, -nl do not use shared memory\n\ 269--no-site-file do not load site-start.el\n\ 270--no-splash do not display a splash screen on startup\n\ 271--no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\ 272--quick, -Q equivalent to -q --no-site-file --no-splash\n\ 273--script FILE run FILE as an Emacs Lisp script\n\ 274--terminal, -t DEVICE use DEVICE for terminal I/O\n\ 275--unibyte, --no-multibyte run Emacs in unibyte mode\n\ 276--user, -u USER load ~USER/.emacs instead of your own\n\ 277\n%s" 278 279#define USAGE2 "\ 280Action options:\n\ 281\n\ 282FILE visit FILE using find-file\n\ 283+LINE FILE visit FILE using find-file, then go to line LINE\n\ 284+LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\ 285 column COLUMN\n\ 286--directory, -L DIR add DIR to variable load-path\n\ 287--eval EXPR evaluate Emacs Lisp expression EXPR\n\ 288--execute EXPR evaluate Emacs Lisp expression EXPR\n\ 289--file FILE visit FILE using find-file\n\ 290--find-file FILE visit FILE using find-file\n\ 291--funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\ 292--insert FILE insert contents of FILE into current buffer\n\ 293--kill exit without asking for confirmation\n\ 294--load, -l FILE load Emacs Lisp FILE using the load function\n\ 295--visit FILE visit FILE using find-file\n\ 296\n" 297 298#define USAGE3 "\ 299Display options:\n\ 300\n\ 301--background-color, -bg COLOR window background color\n\ 302--basic-display, -D disable many display features;\n\ 303 used for debugging Emacs\n\ 304--border-color, -bd COLOR main border color\n\ 305--border-width, -bw WIDTH width of main border\n\ 306--color, --color=MODE override color mode for character terminals;\n\ 307 MODE defaults to `auto', and can also\n\ 308 be `never', `auto', `always',\n\ 309 or a mode name like `ansi8'\n\ 310--cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\ 311--font, -fn FONT default font; must be fixed-width\n\ 312--foreground-color, -fg COLOR window foreground color\n\ 313--fullheight, -fh make the first frame high as the screen\n\ 314--fullscreen, -fs make first frame fullscreen\n\ 315--fullwidth, -fw make the first frame wide as the screen\n\ 316--geometry, -g GEOMETRY window geometry\n\ 317--no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\ 318--iconic start Emacs in iconified state\n\ 319--internal-border, -ib WIDTH width between text and main border\n\ 320--line-spacing, -lsp PIXELS additional space to put between lines\n\ 321--mouse-color, -ms COLOR mouse cursor color in Emacs window\n\ 322--name NAME title for initial Emacs frame\n\ 323--no-blinking-cursor, -nbc disable blinking cursor\n\ 324--reverse-video, -r, -rv switch foreground and background\n\ 325--title, -T TITLE title for initial Emacs frame\n\ 326--vertical-scroll-bars, -vb enable vertical scroll bars\n\ 327--xrm XRESOURCES set additional X resources\n\ 328--help display this help and exit\n\ 329--version output version information and exit\n\ 330\n" 331 332#define USAGE4 "\ 333You can generally also specify long option names with a single -; for\n\ 334example, -batch as well as --batch. You can use any unambiguous\n\ 335abbreviation for a --option.\n\ 336\n\ 337Various environment variables and window system resources also affect\n\ 338Emacs' operation. See the main documentation.\n\ 339\n\ 340Report bugs to %s. First, please see the Bugs\n\ 341section of the Emacs manual or the file BUGS.\n" 342 343 344/* Signal code for the fatal signal that was received. */ 345int fatal_error_code; 346 347/* Nonzero if handling a fatal error already. */ 348int fatal_error_in_progress; 349 350/* If non-null, call this function from fatal_error_signal before 351 committing suicide. */ 352 353void (*fatal_error_signal_hook) P_ ((void)); 354 355#ifdef HAVE_GTK_AND_PTHREAD 356/* When compiled with GTK and running under Gnome, multiple threads meay be 357 created. Keep track of our main thread to make sure signals are delivered 358 to it (see syssignal.h). */ 359 360pthread_t main_thread; 361#endif 362 363 364/* Handle bus errors, invalid instruction, etc. */ 365SIGTYPE 366fatal_error_signal (sig) 367 int sig; 368{ 369 SIGNAL_THREAD_CHECK (sig); 370 fatal_error_code = sig; 371 signal (sig, SIG_DFL); 372 373 TOTALLY_UNBLOCK_INPUT; 374 375 /* If fatal error occurs in code below, avoid infinite recursion. */ 376 if (! fatal_error_in_progress) 377 { 378 fatal_error_in_progress = 1; 379 380 shut_down_emacs (sig, 0, Qnil); 381 } 382 383#ifdef VMS 384 LIB$STOP (SS$_ABORT); 385#else 386 /* Signal the same code; this time it will really be fatal. 387 Remember that since we're in a signal handler, the signal we're 388 going to send is probably blocked, so we have to unblock it if we 389 want to really receive it. */ 390#ifndef MSDOS 391 sigunblock (sigmask (fatal_error_code)); 392#endif 393 394 if (fatal_error_signal_hook) 395 fatal_error_signal_hook (); 396 397 kill (getpid (), fatal_error_code); 398#endif /* not VMS */ 399} 400 401#ifdef SIGDANGER 402 403/* Handler for SIGDANGER. */ 404SIGTYPE 405memory_warning_signal (sig) 406 int sig; 407{ 408 signal (sig, memory_warning_signal); 409 SIGNAL_THREAD_CHECK (sig); 410 411 malloc_warning ("Operating system warns that virtual memory is running low.\n"); 412 413 /* It might be unsafe to call do_auto_save now. */ 414 force_auto_save_soon (); 415} 416#endif 417 418/* We define abort, rather than using it from the library, 419 so that GDB can return from a breakpoint here. 420 MSDOS has its own definition in msdos.c. */ 421 422#if ! defined (DOS_NT) && ! defined (NO_ABORT) 423 424#ifndef ABORT_RETURN_TYPE 425#define ABORT_RETURN_TYPE void 426#endif 427 428ABORT_RETURN_TYPE 429abort () 430{ 431 kill (getpid (), SIGABRT); 432 /* This shouldn't be executed, but it prevents a warning. */ 433 exit (1); 434} 435#endif 436 437 438/* Code for dealing with Lisp access to the Unix command line. */ 439 440static void 441init_cmdargs (argc, argv, skip_args) 442 int argc; 443 char **argv; 444 int skip_args; 445{ 446 register int i; 447 Lisp_Object name, dir, tem; 448 int count = SPECPDL_INDEX (); 449 Lisp_Object raw_name; 450 451 initial_argv = argv; 452 initial_argc = argc; 453 454 raw_name = build_string (argv[0]); 455 456 /* Add /: to the front of the name 457 if it would otherwise be treated as magic. */ 458 tem = Ffind_file_name_handler (raw_name, Qt); 459 if (! NILP (tem)) 460 raw_name = concat2 (build_string ("/:"), raw_name); 461 462 Vinvocation_name = Ffile_name_nondirectory (raw_name); 463 Vinvocation_directory = Ffile_name_directory (raw_name); 464 465 /* If we got no directory in argv[0], search PATH to find where 466 Emacs actually came from. */ 467 if (NILP (Vinvocation_directory)) 468 { 469 Lisp_Object found; 470 int yes = openp (Vexec_path, Vinvocation_name, 471 Vexec_suffixes, &found, make_number (X_OK)); 472 if (yes == 1) 473 { 474 /* Add /: to the front of the name 475 if it would otherwise be treated as magic. */ 476 tem = Ffind_file_name_handler (found, Qt); 477 if (! NILP (tem)) 478 found = concat2 (build_string ("/:"), found); 479 Vinvocation_directory = Ffile_name_directory (found); 480 } 481 } 482 483 if (!NILP (Vinvocation_directory) 484 && NILP (Ffile_name_absolute_p (Vinvocation_directory))) 485 /* Emacs was started with relative path, like ./emacs. 486 Make it absolute. */ 487 Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil); 488 489 Vinstallation_directory = Qnil; 490 491 if (!NILP (Vinvocation_directory)) 492 { 493 dir = Vinvocation_directory; 494 name = Fexpand_file_name (Vinvocation_name, dir); 495 while (1) 496 { 497 Lisp_Object tem, lib_src_exists; 498 Lisp_Object etc_exists, info_exists; 499 500 /* See if dir contains subdirs for use by Emacs. 501 Check for the ones that would exist in a build directory, 502 not including lisp and info. */ 503 tem = Fexpand_file_name (build_string ("lib-src"), dir); 504 lib_src_exists = Ffile_exists_p (tem); 505 506#ifdef MSDOS 507 /* MSDOS installations frequently remove lib-src, but we still 508 must set installation-directory, or else info won't find 509 its files (it uses the value of installation-directory). */ 510 tem = Fexpand_file_name (build_string ("info"), dir); 511 info_exists = Ffile_exists_p (tem); 512#else 513 info_exists = Qnil; 514#endif 515 516 if (!NILP (lib_src_exists) || !NILP (info_exists)) 517 { 518 tem = Fexpand_file_name (build_string ("etc"), dir); 519 etc_exists = Ffile_exists_p (tem); 520 if (!NILP (etc_exists)) 521 { 522 Vinstallation_directory 523 = Ffile_name_as_directory (dir); 524 break; 525 } 526 } 527 528 /* See if dir's parent contains those subdirs. */ 529 tem = Fexpand_file_name (build_string ("../lib-src"), dir); 530 lib_src_exists = Ffile_exists_p (tem); 531 532 533#ifdef MSDOS 534 /* See the MSDOS commentary above. */ 535 tem = Fexpand_file_name (build_string ("../info"), dir); 536 info_exists = Ffile_exists_p (tem); 537#else 538 info_exists = Qnil; 539#endif 540 541 if (!NILP (lib_src_exists) || !NILP (info_exists)) 542 { 543 tem = Fexpand_file_name (build_string ("../etc"), dir); 544 etc_exists = Ffile_exists_p (tem); 545 if (!NILP (etc_exists)) 546 { 547 tem = Fexpand_file_name (build_string (".."), dir); 548 Vinstallation_directory 549 = Ffile_name_as_directory (tem); 550 break; 551 } 552 } 553 554 /* If the Emacs executable is actually a link, 555 next try the dir that the link points into. */ 556 tem = Ffile_symlink_p (name); 557 if (!NILP (tem)) 558 { 559 name = Fexpand_file_name (tem, dir); 560 dir = Ffile_name_directory (name); 561 } 562 else 563 break; 564 } 565 } 566 567 Vcommand_line_args = Qnil; 568 569 for (i = argc - 1; i >= 0; i--) 570 { 571 if (i == 0 || i > skip_args) 572 /* For the moment, we keep arguments as is in unibyte strings. 573 They are decoded in the function command-line after we know 574 locale-coding-system. */ 575 Vcommand_line_args 576 = Fcons (make_unibyte_string (argv[i], strlen (argv[i])), 577 Vcommand_line_args); 578 } 579 580 unbind_to (count, Qnil); 581} 582 583DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0, 584 doc: /* Return the program name that was used to run Emacs. 585Any directory names are omitted. */) 586 () 587{ 588 return Fcopy_sequence (Vinvocation_name); 589} 590 591DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory, 592 0, 0, 0, 593 doc: /* Return the directory name in which the Emacs executable was located. */) 594 () 595{ 596 return Fcopy_sequence (Vinvocation_directory); 597} 598 599 600#ifdef VMS 601#ifdef LINK_CRTL_SHARE 602#ifdef SHARABLE_LIB_BUG 603extern noshare char **environ; 604#endif /* SHARABLE_LIB_BUG */ 605#endif /* LINK_CRTL_SHARE */ 606#endif /* VMS */ 607 608#ifdef HAVE_TZSET 609/* A valid but unlikely value for the TZ environment value. 610 It is OK (though a bit slower) if the user actually chooses this value. */ 611static char dump_tz[] = "UtC0"; 612#endif 613 614#ifndef ORDINARY_LINK 615/* We don't include crtbegin.o and crtend.o in the link, 616 so these functions and variables might be missed. 617 Provide dummy definitions to avoid error. 618 (We don't have any real constructors or destructors.) */ 619#ifdef __GNUC__ 620#ifndef GCC_CTORS_IN_LIBC 621void __do_global_ctors () 622{} 623void __do_global_ctors_aux () 624{} 625void __do_global_dtors () 626{} 627/* GNU/Linux has a bug in its library; avoid an error. */ 628#ifndef GNU_LINUX 629char * __CTOR_LIST__[2] = { (char *) (-1), 0 }; 630#endif 631char * __DTOR_LIST__[2] = { (char *) (-1), 0 }; 632#endif /* GCC_CTORS_IN_LIBC */ 633void __main () 634{} 635#endif /* __GNUC__ */ 636#endif /* ORDINARY_LINK */ 637 638/* Test whether the next argument in ARGV matches SSTR or a prefix of 639 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null 640 (the argument is supposed to have a value) store in *VALPTR either 641 the next argument or the portion of this one after the equal sign. 642 ARGV is read starting at position *SKIPPTR; this index is advanced 643 by the number of arguments used. 644 645 Too bad we can't just use getopt for all of this, but we don't have 646 enough information to do it right. */ 647 648static int 649argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr) 650 char **argv; 651 int argc; 652 char *sstr; 653 char *lstr; 654 int minlen; 655 char **valptr; 656 int *skipptr; 657{ 658 char *p = NULL; 659 int arglen; 660 char *arg; 661 662 /* Don't access argv[argc]; give up in advance. */ 663 if (argc <= *skipptr + 1) 664 return 0; 665 666 arg = argv[*skipptr+1]; 667 if (arg == NULL) 668 return 0; 669 if (strcmp (arg, sstr) == 0) 670 { 671 if (valptr != NULL) 672 { 673 *valptr = argv[*skipptr+2]; 674 *skipptr += 2; 675 } 676 else 677 *skipptr += 1; 678 return 1; 679 } 680 arglen = (valptr != NULL && (p = index (arg, '=')) != NULL 681 ? p - arg : strlen (arg)); 682 if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0) 683 return 0; 684 else if (valptr == NULL) 685 { 686 *skipptr += 1; 687 return 1; 688 } 689 else if (p != NULL) 690 { 691 *valptr = p+1; 692 *skipptr += 1; 693 return 1; 694 } 695 else if (argv[*skipptr+2] != NULL) 696 { 697 *valptr = argv[*skipptr+2]; 698 *skipptr += 2; 699 return 1; 700 } 701 else 702 { 703 return 0; 704 } 705} 706 707#ifdef DOUG_LEA_MALLOC 708 709/* malloc can be invoked even before main (e.g. by the dynamic 710 linker), so the dumped malloc state must be restored as early as 711 possible using this special hook. */ 712 713static void 714malloc_initialize_hook () 715{ 716#ifndef USE_CRT_DLL 717 extern char **environ; 718#endif 719 720 if (initialized) 721 { 722 if (!malloc_using_checking) 723 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be 724 ignored if the heap to be restored was constructed without 725 malloc checking. Can't use unsetenv, since that calls malloc. */ 726 { 727 char **p; 728 729 for (p = environ; p && *p; p++) 730 if (strncmp (*p, "MALLOC_CHECK_=", 14) == 0) 731 { 732 do 733 *p = p[1]; 734 while (*++p); 735 break; 736 } 737 } 738 739 malloc_set_state (malloc_state_ptr); 740#ifndef XMALLOC_OVERRUN_CHECK 741 free (malloc_state_ptr); 742#endif 743 } 744 else 745 { 746 if (my_heap_start == 0) 747 my_heap_start = sbrk (0); 748 malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL; 749 } 750} 751 752void (*__malloc_initialize_hook) () = malloc_initialize_hook; 753 754#endif /* DOUG_LEA_MALLOC */ 755 756 757#define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org" 758#define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org" 759 760/* This function is used to determine an address to which bug report should 761 be sent. */ 762 763char * 764bug_reporting_address () 765{ 766 int count = 0; 767 Lisp_Object temp; 768 char *string; 769 770 temp = Fsymbol_value (intern ("emacs-version")); 771 772 /* When `emacs-version' is invalid, use normal address. */ 773 if (!STRINGP(temp)) 774 return REPORT_EMACS_BUG_ADDRESS; 775 776 string = SDATA (temp); 777 778 /* Count dots in `emacs-version'. */ 779 while (*string) 780 { 781 if (*string == '.') 782 count++; 783 string++; 784 } 785 786 /* When `emacs-version' has at least three dots, it is development or 787 pretest version of Emacs. */ 788 return count >= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS : REPORT_EMACS_BUG_ADDRESS; 789} 790 791 792/* ARGSUSED */ 793int 794main (argc, argv 795#ifdef VMS 796, envp 797#endif 798) 799 int argc; 800 char **argv; 801#ifdef VMS 802 char **envp; 803#endif 804{ 805#if GC_MARK_STACK 806 Lisp_Object dummy; 807#endif 808 char stack_bottom_variable; 809 int do_initial_setlocale; 810 int skip_args = 0; 811#ifndef USE_CRT_DLL 812 extern int errno; 813#endif 814#ifdef HAVE_SETRLIMIT 815 struct rlimit rlim; 816#endif 817 int no_loadup = 0; 818 char *junk = 0; 819 820#if GC_MARK_STACK 821 extern Lisp_Object *stack_base; 822 stack_base = &dummy; 823#endif 824 825 if (!initialized) 826 { 827 extern char my_endbss[]; 828 extern char *my_endbss_static; 829 830 if (my_heap_start == 0) 831 my_heap_start = sbrk (0); 832 833 heap_bss_diff = (char *)my_heap_start - max (my_endbss, my_endbss_static); 834 } 835 836#ifdef LINUX_SBRK_BUG 837 __sbrk (1); 838#endif 839 840#ifdef RUN_TIME_REMAP 841 if (initialized) 842 run_time_remap (argv[0]); 843#endif 844 845#ifdef MAC_OSX 846 if (!initialized) 847 unexec_init_emacs_zone (); 848#endif 849 850 sort_args (argc, argv); 851 argc = 0; 852 while (argv[argc]) argc++; 853 854 if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args) 855 /* We don't know the version number unless this is a dumped Emacs. 856 So ignore --version otherwise. */ 857 && initialized) 858 { 859 Lisp_Object tem; 860 tem = Fsymbol_value (intern ("emacs-version")); 861 if (!STRINGP (tem)) 862 { 863 fprintf (stderr, "Invalid value of `emacs-version'\n"); 864 exit (1); 865 } 866 else 867 { 868 printf ("GNU Emacs %s\n", SDATA (tem)); 869 printf ("Copyright (C) 2007 Free Software Foundation, Inc.\n"); 870 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n"); 871 printf ("You may redistribute copies of Emacs\n"); 872 printf ("under the terms of the GNU General Public License.\n"); 873 printf ("For more information about these matters, "); 874 printf ("see the file named COPYING.\n"); 875 exit (0); 876 } 877 } 878 879#ifdef HAVE_PERSONALITY_LINUX32 880 /* See if there is a gap between the end of BSS and the heap. 881 In that case, set personality and exec ourself again. */ 882 if (!initialized 883 && (strcmp (argv[argc-1], "dump") == 0 884 || strcmp (argv[argc-1], "bootstrap") == 0) 885 && heap_bss_diff > MAX_HEAP_BSS_DIFF) 886 { 887 if (! getenv ("EMACS_HEAP_EXEC")) 888 { 889 /* Set this so we only do this once. */ 890 putenv("EMACS_HEAP_EXEC=true"); 891 892 /* A flag to turn off address randomization which is introduced 893 in linux kernel shipped with fedora core 4 */ 894#define ADD_NO_RANDOMIZE 0x0040000 895 personality (PER_LINUX32 | ADD_NO_RANDOMIZE); 896#undef ADD_NO_RANDOMIZE 897 898 execvp (argv[0], argv); 899 900 /* If the exec fails, try to dump anyway. */ 901 perror ("execvp"); 902 } 903 } 904#endif /* HAVE_PERSONALITY_LINUX32 */ 905 906 907/* Map in shared memory, if we are using that. */ 908#ifdef HAVE_SHM 909 if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args)) 910 { 911 map_in_data (0); 912 /* The shared memory was just restored, which clobbered this. */ 913 skip_args = 1; 914 } 915 else 916 { 917 map_in_data (1); 918 /* The shared memory was just restored, which clobbered this. */ 919 skip_args = 0; 920 } 921#endif 922 923#ifdef NeXT 924 { 925 extern int malloc_cookie; 926 /* This helps out unexnext.c. */ 927 if (initialized) 928 if (malloc_jumpstart (malloc_cookie) != 0) 929 printf ("malloc jumpstart failed!\n"); 930 } 931#endif /* NeXT */ 932 933#ifdef MAC_OSX 934 /* Skip process serial number passed in the form -psn_x_y as 935 command-line argument. The WindowServer adds this option when 936 Emacs is invoked from the Finder or by the `open' command. In 937 these cases, the working directory becomes `/', so we change it 938 to the user's home directory. */ 939 if (argc > skip_args + 1 && strncmp (argv[skip_args+1], "-psn_", 5) == 0) 940 { 941 chdir (getenv ("HOME")); 942 skip_args++; 943 } 944#endif /* MAC_OSX */ 945 946#ifdef VMS 947 /* If -map specified, map the data file in. */ 948 { 949 char *file; 950 if (argmatch (argv, argc, "-map", "--map-data", 3, &file, &skip_args)) 951 mapin_data (file); 952 } 953 954#ifdef LINK_CRTL_SHARE 955#ifdef SHARABLE_LIB_BUG 956 /* Bletcherous shared libraries! */ 957 if (!stdin) 958 stdin = fdopen (0, "r"); 959 if (!stdout) 960 stdout = fdopen (1, "w"); 961 if (!stderr) 962 stderr = fdopen (2, "w"); 963 if (!environ) 964 environ = envp; 965#endif /* SHARABLE_LIB_BUG */ 966#endif /* LINK_CRTL_SHARE */ 967#endif /* VMS */ 968 969#if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK) 970 /* Extend the stack space available. 971 Don't do that if dumping, since some systems (e.g. DJGPP) 972 might define a smaller stack limit at that time. */ 973 if (1 974#ifndef CANNOT_DUMP 975 && (!noninteractive || initialized) 976#endif 977 && !getrlimit (RLIMIT_STACK, &rlim)) 978 { 979 long newlim; 980 extern size_t re_max_failures; 981 /* Approximate the amount regex.c needs per unit of re_max_failures. */ 982 int ratio = 20 * sizeof (char *); 983 /* Then add 33% to cover the size of the smaller stacks that regex.c 984 successively allocates and discards, on its way to the maximum. */ 985 ratio += ratio / 3; 986 /* Add in some extra to cover 987 what we're likely to use for other reasons. */ 988 newlim = re_max_failures * ratio + 200000; 989#ifdef __NetBSD__ 990 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its 991 stack allocation routine for new process that the allocation 992 fails if stack limit is not on page boundary. So, round up the 993 new limit to page boundary. */ 994 newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize(); 995#endif 996 if (newlim > rlim.rlim_max) 997 { 998 newlim = rlim.rlim_max; 999 /* Don't let regex.c overflow the stack we have. */ 1000 re_max_failures = (newlim - 200000) / ratio; 1001 } 1002 if (rlim.rlim_cur < newlim) 1003 rlim.rlim_cur = newlim; 1004 1005 setrlimit (RLIMIT_STACK, &rlim); 1006 } 1007#endif /* HAVE_SETRLIMIT and RLIMIT_STACK */ 1008 1009 /* Record (approximately) where the stack begins. */ 1010 stack_bottom = &stack_bottom_variable; 1011 1012#ifdef USG_SHARED_LIBRARIES 1013 if (bss_end) 1014 brk ((void *)bss_end); 1015#endif 1016 1017 clearerr (stdin); 1018 1019#ifndef SYSTEM_MALLOC 1020 /* Arrange to get warning messages as memory fills up. */ 1021 memory_warnings (0, malloc_warning); 1022 1023 /* Call malloc at least once, to run the initial __malloc_hook. 1024 Also call realloc and free for consistency. */ 1025 free (realloc (malloc (4), 4)); 1026 1027# ifndef SYNC_INPUT 1028 /* Arrange to disable interrupt input inside malloc etc. */ 1029 uninterrupt_malloc (); 1030# endif /* not SYNC_INPUT */ 1031#endif /* not SYSTEM_MALLOC */ 1032 1033#ifdef HAVE_GTK_AND_PTHREAD 1034 main_thread = pthread_self (); 1035#endif /* HAVE_GTK_AND_PTHREAD */ 1036 1037#if defined (MSDOS) || defined (WINDOWSNT) 1038 /* We do all file input/output as binary files. When we need to translate 1039 newlines, we do that manually. */ 1040 _fmode = O_BINARY; 1041#endif /* MSDOS || WINDOWSNT */ 1042 1043#ifdef MSDOS 1044#if __DJGPP__ >= 2 1045 if (!isatty (fileno (stdin))) 1046 setmode (fileno (stdin), O_BINARY); 1047 if (!isatty (fileno (stdout))) 1048 { 1049 fflush (stdout); 1050 setmode (fileno (stdout), O_BINARY); 1051 } 1052#else /* not __DJGPP__ >= 2 */ 1053 (stdin)->_flag &= ~_IOTEXT; 1054 (stdout)->_flag &= ~_IOTEXT; 1055 (stderr)->_flag &= ~_IOTEXT; 1056#endif /* not __DJGPP__ >= 2 */ 1057#endif /* MSDOS */ 1058 1059#ifdef SET_EMACS_PRIORITY 1060 if (emacs_priority) 1061 nice (emacs_priority); 1062 setuid (getuid ()); 1063#endif /* SET_EMACS_PRIORITY */ 1064 1065 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case. 1066 The build procedure uses this while dumping, to ensure that the 1067 dumped Emacs does not have its system locale tables initialized, 1068 as that might cause screwups when the dumped Emacs starts up. */ 1069 { 1070 char *lc_all = getenv ("LC_ALL"); 1071 do_initial_setlocale = ! lc_all || strcmp (lc_all, "C"); 1072 } 1073 1074 /* Set locale now, so that initial error messages are localized properly. 1075 fixup_locale must wait until later, since it builds strings. */ 1076 if (do_initial_setlocale) 1077 setlocale (LC_ALL, ""); 1078 1079#ifdef EXTRA_INITIALIZE 1080 EXTRA_INITIALIZE; 1081#endif 1082 1083 inhibit_window_system = 0; 1084 1085 /* Handle the -t switch, which specifies filename to use as terminal. */ 1086 while (1) 1087 { 1088 char *term; 1089 if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args)) 1090 { 1091 int result; 1092 emacs_close (0); 1093 emacs_close (1); 1094 result = emacs_open (term, O_RDWR, 0); 1095 if (result < 0) 1096 { 1097 char *errstring = strerror (errno); 1098 fprintf (stderr, "%s: %s: %s\n", argv[0], term, errstring); 1099 exit (1); 1100 } 1101 dup (0); 1102 if (! isatty (0)) 1103 { 1104 fprintf (stderr, "%s: %s: not a tty\n", argv[0], term); 1105 exit (1); 1106 } 1107 fprintf (stderr, "Using %s\n", term); 1108#ifdef HAVE_WINDOW_SYSTEM 1109 inhibit_window_system = 1; /* -t => -nw */ 1110#endif 1111 } 1112 else 1113 break; 1114 } 1115 1116 /* Command line option --no-windows is deprecated and thus not mentioned 1117 in the manual and usage informations. */ 1118 if (argmatch (argv, argc, "-nw", "--no-window-system", 6, NULL, &skip_args) 1119 || argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args)) 1120 inhibit_window_system = 1; 1121 1122 /* Handle the -batch switch, which means don't do interactive display. */ 1123 noninteractive = 0; 1124 if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args)) 1125 { 1126 noninteractive = 1; 1127 Vundo_outer_limit = Qnil; 1128 } 1129 if (argmatch (argv, argc, "-script", "--script", 3, &junk, &skip_args)) 1130 { 1131 noninteractive = 1; /* Set batch mode. */ 1132 /* Convert --script to --scriptload, un-skip it, and sort again 1133 so that it will be handled in proper sequence. */ 1134 argv[skip_args - 1] = "-scriptload"; 1135 skip_args -= 2; 1136 sort_args (argc, argv); 1137 } 1138 1139 /* Handle the --help option, which gives a usage message. */ 1140 if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args)) 1141 { 1142 printf (USAGE1, argv[0], USAGE2); 1143 printf (USAGE3); 1144 printf (USAGE4, bug_reporting_address ()); 1145 exit (0); 1146 } 1147 1148 if (! noninteractive) 1149 { 1150#ifdef BSD_PGRPS 1151 if (initialized) 1152 { 1153 inherited_pgroup = EMACS_GETPGRP (0); 1154 setpgrp (0, getpid ()); 1155 } 1156#else 1157#if defined (USG5) && defined (INTERRUPT_INPUT) 1158 setpgrp (); 1159#endif 1160#endif 1161 } 1162 1163 init_signals (); 1164 1165 /* Don't catch SIGHUP if dumping. */ 1166 if (1 1167#ifndef CANNOT_DUMP 1168 && initialized 1169#endif 1170 ) 1171 { 1172 sigblock (sigmask (SIGHUP)); 1173 /* In --batch mode, don't catch SIGHUP if already ignored. 1174 That makes nohup work. */ 1175 if (! noninteractive 1176 || signal (SIGHUP, SIG_IGN) != SIG_IGN) 1177 signal (SIGHUP, fatal_error_signal); 1178 sigunblock (sigmask (SIGHUP)); 1179 } 1180 1181 if ( 1182#ifndef CANNOT_DUMP 1183 ! noninteractive || initialized 1184#else 1185 1 1186#endif 1187 ) 1188 { 1189 /* Don't catch these signals in batch mode if dumping. 1190 On some machines, this sets static data that would make 1191 signal fail to work right when the dumped Emacs is run. */ 1192 signal (SIGQUIT, fatal_error_signal); 1193 signal (SIGILL, fatal_error_signal); 1194 signal (SIGTRAP, fatal_error_signal); 1195#ifdef SIGUSR1 1196 add_user_signal (SIGUSR1, "sigusr1"); 1197#endif 1198#ifdef SIGUSR2 1199 add_user_signal (SIGUSR2, "sigusr2"); 1200#endif 1201#ifdef SIGABRT 1202 signal (SIGABRT, fatal_error_signal); 1203#endif 1204#ifdef SIGHWE 1205 signal (SIGHWE, fatal_error_signal); 1206#endif 1207#ifdef SIGPRE 1208 signal (SIGPRE, fatal_error_signal); 1209#endif 1210#ifdef SIGORE 1211 signal (SIGORE, fatal_error_signal); 1212#endif 1213#ifdef SIGUME 1214 signal (SIGUME, fatal_error_signal); 1215#endif 1216#ifdef SIGDLK 1217 signal (SIGDLK, fatal_error_signal); 1218#endif 1219#ifdef SIGCPULIM 1220 signal (SIGCPULIM, fatal_error_signal); 1221#endif 1222#ifdef SIGIOT 1223 /* This is missing on some systems - OS/2, for example. */ 1224 signal (SIGIOT, fatal_error_signal); 1225#endif 1226#ifdef SIGEMT 1227 signal (SIGEMT, fatal_error_signal); 1228#endif 1229 signal (SIGFPE, fatal_error_signal); 1230#ifdef SIGBUS 1231 signal (SIGBUS, fatal_error_signal); 1232#endif 1233 signal (SIGSEGV, fatal_error_signal); 1234#ifdef SIGSYS 1235 signal (SIGSYS, fatal_error_signal); 1236#endif 1237 signal (SIGTERM, fatal_error_signal); 1238#ifdef SIGXCPU 1239 signal (SIGXCPU, fatal_error_signal); 1240#endif 1241#ifdef SIGXFSZ 1242 signal (SIGXFSZ, fatal_error_signal); 1243#endif /* SIGXFSZ */ 1244 1245#ifdef SIGDANGER 1246 /* This just means available memory is getting low. */ 1247 signal (SIGDANGER, memory_warning_signal); 1248#endif 1249 1250#ifdef AIX 1251/* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */ 1252 signal (SIGXCPU, fatal_error_signal); 1253#ifndef _I386 1254 signal (SIGIOINT, fatal_error_signal); 1255#endif 1256 signal (SIGGRANT, fatal_error_signal); 1257 signal (SIGRETRACT, fatal_error_signal); 1258 signal (SIGSOUND, fatal_error_signal); 1259 signal (SIGMSG, fatal_error_signal); 1260#endif /* AIX */ 1261 } 1262 1263 noninteractive1 = noninteractive; 1264 1265/* Perform basic initializations (not merely interning symbols). */ 1266 1267 if (!initialized) 1268 { 1269 init_alloc_once (); 1270 init_obarray (); 1271 init_eval_once (); 1272 init_charset_once (); 1273 init_coding_once (); 1274 init_syntax_once (); /* Create standard syntax table. */ 1275 init_category_once (); /* Create standard category table. */ 1276 /* Must be done before init_buffer. */ 1277 init_casetab_once (); 1278 init_buffer_once (); /* Create buffer table and some buffers. */ 1279 init_minibuf_once (); /* Create list of minibuffers. */ 1280 /* Must precede init_window_once. */ 1281 1282 /* Call syms_of_xfaces before init_window_once because that 1283 function creates Vterminal_frame. Termcap frames now use 1284 faces, and the face implementation uses some symbols as 1285 face names. */ 1286 syms_of_xfaces (); 1287 /* Call syms_of_keyboard before init_window_once because 1288 keyboard sets up symbols that include some face names that 1289 the X support will want to use. This can happen when 1290 CANNOT_DUMP is defined. */ 1291 syms_of_keyboard (); 1292 1293#ifdef MAC_OS8 1294 /* init_window_once calls make_terminal_frame which on Mac OS 1295 creates a full-fledge output_mac type frame. This does not 1296 work correctly before syms_of_textprop, syms_of_macfns, 1297 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search, 1298 syms_of_frame, mac_term_init, and init_keyboard have already 1299 been called. */ 1300 syms_of_textprop (); 1301 syms_of_macfns (); 1302 syms_of_ccl (); 1303 syms_of_fontset (); 1304 syms_of_macterm (); 1305 syms_of_macmenu (); 1306 syms_of_macselect (); 1307 syms_of_data (); 1308 syms_of_search (); 1309 syms_of_frame (); 1310 1311 init_atimer (); 1312 mac_term_init (build_string ("Mac"), NULL, NULL); 1313 init_keyboard (); 1314#endif 1315 1316 init_window_once (); /* Init the window system. */ 1317 init_fileio_once (); /* Must precede any path manipulation. */ 1318#ifdef HAVE_WINDOW_SYSTEM 1319 init_fringe_once (); /* Swap bitmaps if necessary. */ 1320#endif /* HAVE_WINDOW_SYSTEM */ 1321 } 1322 1323 init_alloc (); 1324 1325 if (do_initial_setlocale) 1326 { 1327 fixup_locale (); 1328 Vsystem_messages_locale = Vprevious_system_messages_locale; 1329 Vsystem_time_locale = Vprevious_system_time_locale; 1330 } 1331 1332 init_eval (); 1333 init_data (); 1334#ifdef CLASH_DETECTION 1335 init_filelock (); 1336#endif 1337#ifndef MAC_OS8 1338 init_atimer (); 1339#endif 1340 running_asynch_code = 0; 1341 1342 /* Handle --unibyte and the EMACS_UNIBYTE envvar, 1343 but not while dumping. */ 1344 if (1) 1345 { 1346 int inhibit_unibyte = 0; 1347 1348 /* --multibyte overrides EMACS_UNIBYTE. */ 1349 if (argmatch (argv, argc, "-no-unibyte", "--no-unibyte", 4, NULL, &skip_args) 1350 || argmatch (argv, argc, "-multibyte", "--multibyte", 4, NULL, &skip_args) 1351 /* Ignore EMACS_UNIBYTE before dumping. */ 1352 || (!initialized && noninteractive)) 1353 inhibit_unibyte = 1; 1354 1355 /* --unibyte requests that we set up to do everything with single-byte 1356 buffers and strings. We need to handle this before calling 1357 init_lread, init_editfns and other places that generate Lisp strings 1358 from text in the environment. */ 1359 /* Actually this shouldn't be needed as of 20.4 in a generally 1360 unibyte environment. As handa says, environment values 1361 aren't now decoded; also existing buffers are now made 1362 unibyte during startup if .emacs sets unibyte. Tested with 1363 8-bit data in environment variables and /etc/passwd, setting 1364 unibyte and Latin-1 in .emacs. -- Dave Love */ 1365 if (argmatch (argv, argc, "-unibyte", "--unibyte", 4, NULL, &skip_args) 1366 || argmatch (argv, argc, "-no-multibyte", "--no-multibyte", 4, NULL, &skip_args) 1367 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte)) 1368 { 1369 Lisp_Object old_log_max; 1370 Lisp_Object symbol, tail; 1371 1372 symbol = intern ("default-enable-multibyte-characters"); 1373 Fset (symbol, Qnil); 1374 1375 if (initialized) 1376 { 1377 /* Erase pre-dump messages in *Messages* now so no abort. */ 1378 old_log_max = Vmessage_log_max; 1379 XSETFASTINT (Vmessage_log_max, 0); 1380 message_dolog ("", 0, 1, 0); 1381 Vmessage_log_max = old_log_max; 1382 } 1383 1384 for (tail = Vbuffer_alist; CONSP (tail); 1385 tail = XCDR (tail)) 1386 { 1387 Lisp_Object buffer; 1388 1389 buffer = Fcdr (XCAR (tail)); 1390 /* Verify that all buffers are empty now, as they 1391 ought to be. */ 1392 if (BUF_Z (XBUFFER (buffer)) > BUF_BEG (XBUFFER (buffer))) 1393 abort (); 1394 /* It is safe to do this crudely in an empty buffer. */ 1395 XBUFFER (buffer)->enable_multibyte_characters = Qnil; 1396 } 1397 } 1398 } 1399 1400 no_loadup 1401 = argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args); 1402 1403 1404#ifdef HAVE_X_WINDOWS 1405 /* Stupid kludge to catch command-line display spec. We can't 1406 handle this argument entirely in window system dependent code 1407 because we don't even know which window system dependent code 1408 to run until we've recognized this argument. */ 1409 { 1410 char *displayname = 0; 1411 int count_before = skip_args; 1412 1413 /* Skip any number of -d options, but only use the last one. */ 1414 while (1) 1415 { 1416 int count_before_this = skip_args; 1417 1418 if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args)) 1419 display_arg = 1; 1420 else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args)) 1421 display_arg = 1; 1422 else 1423 break; 1424 1425 count_before = count_before_this; 1426 } 1427 1428 /* If we have the form --display=NAME, 1429 convert it into -d name. 1430 This requires inserting a new element into argv. */ 1431 if (displayname != 0 && skip_args - count_before == 1) 1432 { 1433 char **new = (char **) xmalloc (sizeof (char *) * (argc + 2)); 1434 int j; 1435 1436 for (j = 0; j < count_before + 1; j++) 1437 new[j] = argv[j]; 1438 new[count_before + 1] = "-d"; 1439 new[count_before + 2] = displayname; 1440 for (j = count_before + 2; j <argc; j++) 1441 new[j + 1] = argv[j]; 1442 argv = new; 1443 argc++; 1444 } 1445 /* Change --display to -d, when its arg is separate. */ 1446 else if (displayname != 0 && skip_args > count_before 1447 && argv[count_before + 1][1] == '-') 1448 argv[count_before + 1] = "-d"; 1449 1450 /* Don't actually discard this arg. */ 1451 skip_args = count_before; 1452 } 1453#endif 1454 1455 /* argmatch must not be used after here, 1456 except when bulding temacs 1457 because the -d argument has not been skipped in skip_args. */ 1458 1459#ifdef MSDOS 1460 /* Call early 'cause init_environment needs it. */ 1461 init_dosfns (); 1462 /* Set defaults for several environment variables. */ 1463 if (initialized) 1464 init_environment (argc, argv, skip_args); 1465 else 1466 tzset (); 1467#endif /* MSDOS */ 1468 1469#ifdef WINDOWSNT 1470 globals_of_w32 (); 1471 /* Initialize environment from registry settings. */ 1472 init_environment (argv); 1473 init_ntproc (); /* must precede init_editfns. */ 1474#endif 1475 1476#if defined (MAC_OSX) && defined (HAVE_CARBON) 1477 if (initialized) 1478 init_mac_osx_environment (); 1479#endif 1480 1481 /* egetenv is a pretty low-level facility, which may get called in 1482 many circumstances; it seems flimsy to put off initializing it 1483 until calling init_callproc. */ 1484 set_process_environment (); 1485 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4 1486 if this is not done. Do it after set_process_environment so that we 1487 don't pollute Vprocess_environment. */ 1488 /* Setting LANG here will defeat the startup locale processing... */ 1489#ifdef AIX3_2 1490 putenv ("LANG=C"); 1491#endif 1492 1493 init_buffer (); /* Init default directory of main buffer. */ 1494 1495 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */ 1496 init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */ 1497 1498 if (initialized) 1499 { 1500 /* Erase any pre-dump messages in the message log, to avoid confusion. */ 1501 Lisp_Object old_log_max; 1502 old_log_max = Vmessage_log_max; 1503 XSETFASTINT (Vmessage_log_max, 0); 1504 message_dolog ("", 0, 1, 0); 1505 Vmessage_log_max = old_log_max; 1506 } 1507 1508 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */ 1509 init_lread (); 1510 1511 /* Intern the names of all standard functions and variables; 1512 define standard keys. */ 1513 1514 if (!initialized) 1515 { 1516 /* The basic levels of Lisp must come first. */ 1517 /* And data must come first of all 1518 for the sake of symbols like error-message. */ 1519#ifndef MAC_OS8 1520 /* Called before init_window_once for Mac OS Classic. */ 1521 syms_of_data (); 1522#endif 1523 syms_of_alloc (); 1524 syms_of_lread (); 1525 syms_of_print (); 1526 syms_of_eval (); 1527 syms_of_fns (); 1528 syms_of_floatfns (); 1529 1530 syms_of_abbrev (); 1531 syms_of_buffer (); 1532 syms_of_bytecode (); 1533 syms_of_callint (); 1534 syms_of_casefiddle (); 1535 syms_of_casetab (); 1536 syms_of_callproc (); 1537 syms_of_category (); 1538#ifndef MAC_OS8 1539 /* Called before init_window_once for Mac OS Classic. */ 1540 syms_of_ccl (); 1541#endif 1542 syms_of_charset (); 1543 syms_of_cmds (); 1544#ifndef NO_DIR_LIBRARY 1545 syms_of_dired (); 1546#endif /* not NO_DIR_LIBRARY */ 1547 syms_of_display (); 1548 syms_of_doc (); 1549 syms_of_editfns (); 1550 syms_of_emacs (); 1551 syms_of_fileio (); 1552 syms_of_coding (); /* This should be after syms_of_fileio. */ 1553#ifdef CLASH_DETECTION 1554 syms_of_filelock (); 1555#endif /* CLASH_DETECTION */ 1556 syms_of_indent (); 1557 syms_of_insdel (); 1558 syms_of_keymap (); 1559 syms_of_macros (); 1560 syms_of_marker (); 1561 syms_of_minibuf (); 1562 syms_of_process (); 1563#ifndef MAC_OS8 1564 /* Called before init_window_once for Mac OS Classic. */ 1565 syms_of_search (); 1566 syms_of_frame (); 1567#endif 1568 syms_of_syntax (); 1569 syms_of_term (); 1570 syms_of_undo (); 1571#ifdef HAVE_SOUND 1572 syms_of_sound (); 1573#endif 1574#ifndef MAC_OS8 1575 /* Called before init_window_once for Mac OS Classic. */ 1576 syms_of_textprop (); 1577#endif 1578 syms_of_composite (); 1579#ifdef VMS 1580 syms_of_vmsproc (); 1581#endif /* VMS */ 1582#ifdef WINDOWSNT 1583 syms_of_ntproc (); 1584#endif /* WINDOWSNT */ 1585 syms_of_window (); 1586 syms_of_xdisp (); 1587#ifdef HAVE_WINDOW_SYSTEM 1588 syms_of_fringe (); 1589 syms_of_image (); 1590#endif /* HAVE_WINDOW_SYSTEM */ 1591#ifdef HAVE_X_WINDOWS 1592 syms_of_xterm (); 1593 syms_of_xfns (); 1594 syms_of_fontset (); 1595#ifdef HAVE_X_SM 1596 syms_of_xsmfns (); 1597#endif 1598#ifdef HAVE_X11 1599 syms_of_xselect (); 1600#endif 1601#endif /* HAVE_X_WINDOWS */ 1602 1603#ifndef HAVE_NTGUI 1604#ifndef MAC_OS 1605 /* Called before init_window_once for Mac OS Classic. */ 1606 syms_of_xmenu (); 1607#endif 1608#endif 1609 1610#ifdef HAVE_NTGUI 1611 syms_of_w32term (); 1612 syms_of_w32fns (); 1613 syms_of_w32select (); 1614 syms_of_w32menu (); 1615 syms_of_fontset (); 1616#endif /* HAVE_NTGUI */ 1617 1618#if defined (MAC_OSX) && defined (HAVE_CARBON) 1619 syms_of_macterm (); 1620 syms_of_macfns (); 1621 syms_of_macmenu (); 1622 syms_of_macselect (); 1623 syms_of_fontset (); 1624#endif /* MAC_OSX && HAVE_CARBON */ 1625 1626#ifdef SYMS_SYSTEM 1627 SYMS_SYSTEM; 1628#endif 1629 1630#ifdef SYMS_MACHINE 1631 SYMS_MACHINE; 1632#endif 1633 1634 keys_of_casefiddle (); 1635 keys_of_cmds (); 1636 keys_of_buffer (); 1637 keys_of_keyboard (); 1638 keys_of_keymap (); 1639 keys_of_minibuf (); 1640 keys_of_window (); 1641 } 1642 else 1643 { 1644 /* Initialization that must be done even if the global variable 1645 initialized is non zero. */ 1646#ifdef HAVE_NTGUI 1647 globals_of_w32fns (); 1648 globals_of_w32menu (); 1649 globals_of_w32select (); 1650#endif /* HAVE_NTGUI */ 1651 } 1652 1653 if (!noninteractive) 1654 { 1655#ifdef VMS 1656 init_vms_input ();/* init_display calls get_frame_size, that needs this. */ 1657#endif /* VMS */ 1658 init_display (); /* Determine terminal type. init_sys_modes uses results. */ 1659 } 1660#ifndef MAC_OS8 1661 /* Called before init_window_once for Mac OS Classic. */ 1662 init_keyboard (); /* This too must precede init_sys_modes. */ 1663#endif 1664#ifdef VMS 1665 init_vmsproc (); /* And this too. */ 1666#endif /* VMS */ 1667 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */ 1668 init_fns (); 1669 init_xdisp (); 1670#ifdef HAVE_WINDOW_SYSTEM 1671 init_fringe (); 1672 init_image (); 1673#endif /* HAVE_WINDOW_SYSTEM */ 1674 init_macros (); 1675 init_editfns (); 1676 init_floatfns (); 1677#ifdef VMS 1678 init_vmsfns (); 1679#endif /* VMS */ 1680 init_process (); 1681#ifdef HAVE_SOUND 1682 init_sound (); 1683#endif 1684 init_window (); 1685 1686 if (!initialized) 1687 { 1688 char *file; 1689 /* Handle -l loadup, args passed by Makefile. */ 1690 if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args)) 1691 Vtop_level = Fcons (intern ("load"), 1692 Fcons (build_string (file), Qnil)); 1693 /* Unless next switch is -nl, load "loadup.el" first thing. */ 1694 if (! no_loadup) 1695 Vtop_level = Fcons (intern ("load"), 1696 Fcons (build_string ("loadup.el"), Qnil)); 1697 } 1698 1699 if (initialized) 1700 { 1701#ifdef HAVE_TZSET 1702 { 1703 /* If the execution TZ happens to be the same as the dump TZ, 1704 change it to some other value and then change it back, 1705 to force the underlying implementation to reload the TZ info. 1706 This is needed on implementations that load TZ info from files, 1707 since the TZ file contents may differ between dump and execution. */ 1708 char *tz = getenv ("TZ"); 1709 if (tz && !strcmp (tz, dump_tz)) 1710 { 1711 ++*tz; 1712 tzset (); 1713 --*tz; 1714 } 1715 } 1716#endif 1717 } 1718 1719 /* Set up for profiling. This is known to work on FreeBSD, 1720 GNU/Linux and MinGW. It might work on some other systems too. 1721 Give it a try and tell us if it works on your system. To compile 1722 for profiling, add -pg to the switches your platform uses in 1723 CFLAGS and LDFLAGS. For example: 1724 `make CFLAGS="-pg -g -O -DPROFILING=1" LDFLAGS="-pg -g"'. */ 1725#if defined (__FreeBSD__) || defined (GNU_LINUX) || defined(__MINGW32__) 1726#ifdef PROFILING 1727 if (initialized) 1728 { 1729 extern void _mcleanup (); 1730#ifdef __MINGW32__ 1731 extern unsigned char etext asm ("etext"); 1732#else 1733 extern char etext; 1734#endif 1735 extern void safe_bcopy (); 1736 extern void dump_opcode_frequencies (); 1737 1738 atexit (_mcleanup); 1739 /* This uses safe_bcopy because that function comes first in the 1740 Emacs executable. It might be better to use something that 1741 gives the start of the text segment, but start_of_text is not 1742 defined on all systems now. */ 1743 monstartup (safe_bcopy, &etext); 1744 } 1745 else 1746 moncontrol (0); 1747#endif 1748#endif 1749 1750 initialized = 1; 1751 1752#ifdef LOCALTIME_CACHE 1753 /* Some versions of localtime have a bug. They cache the value of the time 1754 zone rather than looking it up every time. Since localtime() is 1755 called to bolt the undumping time into the undumped emacs, this 1756 results in localtime ignoring the TZ environment variable. 1757 This flushes the new TZ value into localtime. */ 1758 tzset (); 1759#endif /* defined (LOCALTIME_CACHE) */ 1760 1761 /* Enter editor command loop. This never returns. */ 1762 Frecursive_edit (); 1763 /* NOTREACHED */ 1764 return 0; 1765} 1766 1767/* Sort the args so we can find the most important ones 1768 at the beginning of argv. */ 1769 1770/* First, here's a table of all the standard options. */ 1771 1772struct standard_args 1773{ 1774 char *name; 1775 char *longname; 1776 int priority; 1777 int nargs; 1778}; 1779 1780struct standard_args standard_args[] = 1781{ 1782 { "-version", "--version", 150, 0 }, 1783#ifdef HAVE_SHM 1784 { "-nl", "--no-shared-memory", 140, 0 }, 1785#endif 1786#ifdef VMS 1787 { "-map", "--map-data", 130, 0 }, 1788#endif 1789 { "-t", "--terminal", 120, 1 }, 1790 { "-nw", "--no-window-system", 110, 0 }, 1791 { "-nw", "--no-windows", 110, 0 }, 1792 { "-batch", "--batch", 100, 0 }, 1793 { "-script", "--script", 100, 1 }, 1794 { "-help", "--help", 90, 0 }, 1795 { "-no-unibyte", "--no-unibyte", 83, 0 }, 1796 { "-multibyte", "--multibyte", 82, 0 }, 1797 { "-unibyte", "--unibyte", 81, 0 }, 1798 { "-no-multibyte", "--no-multibyte", 80, 0 }, 1799 { "-nl", "--no-loadup", 70, 0 }, 1800 /* -d must come last before the options handled in startup.el. */ 1801 { "-d", "--display", 60, 1 }, 1802 { "-display", 0, 60, 1 }, 1803 /* Now for the options handled in startup.el. */ 1804 { "-Q", "--quick", 55, 0 }, 1805 { "-quick", 0, 55, 0 }, 1806 { "-q", "--no-init-file", 50, 0 }, 1807 { "-no-init-file", 0, 50, 0 }, 1808 { "-no-site-file", "--no-site-file", 40, 0 }, 1809 { "-no-splash", "--no-splash", 40, 0 }, 1810 { "-u", "--user", 30, 1 }, 1811 { "-user", 0, 30, 1 }, 1812 { "-debug-init", "--debug-init", 20, 0 }, 1813 { "-nbi", "--no-bitmap-icon", 15, 0 }, 1814 { "-iconic", "--iconic", 15, 0 }, 1815 { "-D", "--basic-display", 12, 0}, 1816 { "-basic-display", 0, 12, 0}, 1817 { "-bg", "--background-color", 10, 1 }, 1818 { "-background", 0, 10, 1 }, 1819 { "-fg", "--foreground-color", 10, 1 }, 1820 { "-foreground", 0, 10, 1 }, 1821 { "-bd", "--border-color", 10, 1 }, 1822 { "-bw", "--border-width", 10, 1 }, 1823 { "-ib", "--internal-border", 10, 1 }, 1824 { "-ms", "--mouse-color", 10, 1 }, 1825 { "-cr", "--cursor-color", 10, 1 }, 1826 { "-nbc", "--no-blinking-cursor", 10, 0 }, 1827 { "-fn", "--font", 10, 1 }, 1828 { "-font", 0, 10, 1 }, 1829 { "-fs", "--fullscreen", 10, 0 }, 1830 { "-fw", "--fullwidth", 10, 0 }, 1831 { "-fh", "--fullheight", 10, 0 }, 1832 { "-g", "--geometry", 10, 1 }, 1833 { "-geometry", 0, 10, 1 }, 1834 { "-T", "--title", 10, 1 }, 1835 { "-title", 0, 10, 1 }, 1836 { "-name", "--name", 10, 1 }, 1837 { "-xrm", "--xrm", 10, 1 }, 1838 { "-r", "--reverse-video", 5, 0 }, 1839 { "-rv", 0, 5, 0 }, 1840 { "-reverse", 0, 5, 0 }, 1841 { "-hb", "--horizontal-scroll-bars", 5, 0 }, 1842 { "-vb", "--vertical-scroll-bars", 5, 0 }, 1843 { "-color", "--color", 5, 0}, 1844 /* These have the same priority as ordinary file name args, 1845 so they are not reordered with respect to those. */ 1846 { "-L", "--directory", 0, 1 }, 1847 { "-directory", 0, 0, 1 }, 1848 { "-l", "--load", 0, 1 }, 1849 { "-load", 0, 0, 1 }, 1850 { "-scriptload", "--scriptload", 0, 1 }, 1851 { "-f", "--funcall", 0, 1 }, 1852 { "-funcall", 0, 0, 1 }, 1853 { "-eval", "--eval", 0, 1 }, 1854 { "-execute", "--execute", 0, 1 }, 1855 { "-find-file", "--find-file", 0, 1 }, 1856 { "-visit", "--visit", 0, 1 }, 1857 { "-file", "--file", 0, 1 }, 1858 { "-insert", "--insert", 0, 1 }, 1859 /* This should be processed after ordinary file name args and the like. */ 1860 { "-kill", "--kill", -10, 0 }, 1861}; 1862 1863/* Reorder the elements of ARGV (assumed to have ARGC elements) 1864 so that the highest priority ones come first. 1865 Do not change the order of elements of equal priority. 1866 If an option takes an argument, keep it and its argument together. 1867 1868 If an option that takes no argument appears more 1869 than once, eliminate all but one copy of it. */ 1870 1871static void 1872sort_args (argc, argv) 1873 int argc; 1874 char **argv; 1875{ 1876 char **new = (char **) xmalloc (sizeof (char *) * argc); 1877 /* For each element of argv, 1878 the corresponding element of options is: 1879 0 for an option that takes no arguments, 1880 1 for an option that takes one argument, etc. 1881 -1 for an ordinary non-option argument. */ 1882 int *options = (int *) xmalloc (sizeof (int) * argc); 1883 int *priority = (int *) xmalloc (sizeof (int) * argc); 1884 int to = 1; 1885 int incoming_used = 1; 1886 int from; 1887 int i; 1888 1889 /* Categorize all the options, 1890 and figure out which argv elts are option arguments. */ 1891 for (from = 1; from < argc; from++) 1892 { 1893 options[from] = -1; 1894 priority[from] = 0; 1895 if (argv[from][0] == '-') 1896 { 1897 int match, thislen; 1898 char *equals; 1899 1900 /* If we have found "--", don't consider 1901 any more arguments as options. */ 1902 if (argv[from][1] == '-' && argv[from][2] == 0) 1903 { 1904 /* Leave the "--", and everything following it, at the end. */ 1905 for (; from < argc; from++) 1906 { 1907 priority[from] = -100; 1908 options[from] = -1; 1909 } 1910 break; 1911 } 1912 1913 /* Look for a match with a known old-fashioned option. */ 1914 for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++) 1915 if (!strcmp (argv[from], standard_args[i].name)) 1916 { 1917 options[from] = standard_args[i].nargs; 1918 priority[from] = standard_args[i].priority; 1919 if (from + standard_args[i].nargs >= argc) 1920 fatal ("Option `%s' requires an argument\n", argv[from]); 1921 from += standard_args[i].nargs; 1922 goto done; 1923 } 1924 1925 /* Look for a match with a known long option. 1926 MATCH is -1 if no match so far, -2 if two or more matches so far, 1927 >= 0 (the table index of the match) if just one match so far. */ 1928 if (argv[from][1] == '-') 1929 { 1930 match = -1; 1931 thislen = strlen (argv[from]); 1932 equals = index (argv[from], '='); 1933 if (equals != 0) 1934 thislen = equals - argv[from]; 1935 1936 for (i = 0; 1937 i < sizeof (standard_args) / sizeof (standard_args[0]); i++) 1938 if (standard_args[i].longname 1939 && !strncmp (argv[from], standard_args[i].longname, 1940 thislen)) 1941 { 1942 if (match == -1) 1943 match = i; 1944 else 1945 match = -2; 1946 } 1947 1948 /* If we found exactly one match, use that. */ 1949 if (match >= 0) 1950 { 1951 options[from] = standard_args[match].nargs; 1952 priority[from] = standard_args[match].priority; 1953 /* If --OPTION=VALUE syntax is used, 1954 this option uses just one argv element. */ 1955 if (equals != 0) 1956 options[from] = 0; 1957 if (from + options[from] >= argc) 1958 fatal ("Option `%s' requires an argument\n", argv[from]); 1959 from += options[from]; 1960 } 1961 } 1962 done: ; 1963 } 1964 } 1965 1966 /* Copy the arguments, in order of decreasing priority, to NEW. */ 1967 new[0] = argv[0]; 1968 while (incoming_used < argc) 1969 { 1970 int best = -1; 1971 int best_priority = -9999; 1972 1973 /* Find the highest priority remaining option. 1974 If several have equal priority, take the first of them. */ 1975 for (from = 1; from < argc; from++) 1976 { 1977 if (argv[from] != 0 && priority[from] > best_priority) 1978 { 1979 best_priority = priority[from]; 1980 best = from; 1981 } 1982 /* Skip option arguments--they are tied to the options. */ 1983 if (options[from] > 0) 1984 from += options[from]; 1985 } 1986 1987 if (best < 0) 1988 abort (); 1989 1990 /* Copy the highest priority remaining option, with its args, to NEW. 1991 Unless it is a duplicate of the previous one. */ 1992 if (! (options[best] == 0 1993 && ! strcmp (new[to - 1], argv[best]))) 1994 { 1995 new[to++] = argv[best]; 1996 for (i = 0; i < options[best]; i++) 1997 new[to++] = argv[best + i + 1]; 1998 } 1999 2000 incoming_used += 1 + (options[best] > 0 ? options[best] : 0); 2001 2002 /* Clear out this option in ARGV. */ 2003 argv[best] = 0; 2004 for (i = 0; i < options[best]; i++) 2005 argv[best + i + 1] = 0; 2006 } 2007 2008 /* If duplicate options were deleted, fill up extra space with null ptrs. */ 2009 while (to < argc) 2010 new[to++] = 0; 2011 2012 bcopy (new, argv, sizeof (char *) * argc); 2013 2014 xfree (options); 2015 xfree (new); 2016 xfree (priority); 2017} 2018 2019DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P", 2020 doc: /* Exit the Emacs job and kill it. 2021If ARG is an integer, return ARG as the exit program code. 2022If ARG is a string, stuff it as keyboard input. 2023 2024The value of `kill-emacs-hook', if not void, 2025is a list of functions (of no args), 2026all of which are called before Emacs is actually killed. */) 2027 (arg) 2028 Lisp_Object arg; 2029{ 2030 struct gcpro gcpro1; 2031 2032 GCPRO1 (arg); 2033 2034 if (feof (stdin)) 2035 arg = Qt; 2036 2037 if (!NILP (Vrun_hooks) && !noninteractive) 2038 call1 (Vrun_hooks, intern ("kill-emacs-hook")); 2039 2040 UNGCPRO; 2041 2042/* Is it really necessary to do this deassign 2043 when we are going to exit anyway? */ 2044/* #ifdef VMS 2045 stop_vms_input (); 2046 #endif */ 2047 2048 shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil); 2049 2050 /* If we have an auto-save list file, 2051 kill it because we are exiting Emacs deliberately (not crashing). 2052 Do it after shut_down_emacs, which does an auto-save. */ 2053 if (STRINGP (Vauto_save_list_file_name)) 2054 unlink (SDATA (Vauto_save_list_file_name)); 2055 2056 exit (INTEGERP (arg) ? XINT (arg) : EXIT_SUCCESS); 2057 /* NOTREACHED */ 2058 return Qnil; 2059} 2060 2061 2062/* Perform an orderly shutdown of Emacs. Autosave any modified 2063 buffers, kill any child processes, clean up the terminal modes (if 2064 we're in the foreground), and other stuff like that. Don't perform 2065 any redisplay; this may be called when Emacs is shutting down in 2066 the background, or after its X connection has died. 2067 2068 If SIG is a signal number, print a message for it. 2069 2070 This is called by fatal signal handlers, X protocol error handlers, 2071 and Fkill_emacs. */ 2072 2073void 2074shut_down_emacs (sig, no_x, stuff) 2075 int sig, no_x; 2076 Lisp_Object stuff; 2077{ 2078 /* Prevent running of hooks from now on. */ 2079 Vrun_hooks = Qnil; 2080 2081 /* Don't update display from now on. */ 2082 Vinhibit_redisplay = Qt; 2083 2084 /* If we are controlling the terminal, reset terminal modes. */ 2085#ifdef EMACS_HAVE_TTY_PGRP 2086 { 2087 int pgrp = EMACS_GETPGRP (0); 2088 2089 int tpgrp; 2090 if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1 2091 && tpgrp == pgrp) 2092 { 2093 fflush (stdout); 2094 reset_sys_modes (); 2095 if (sig && sig != SIGTERM) 2096 fprintf (stderr, "Fatal error (%d)", sig); 2097 } 2098 } 2099#else 2100 fflush (stdout); 2101 reset_sys_modes (); 2102#endif 2103 2104 stuff_buffered_input (stuff); 2105 2106#ifdef subprocesses 2107 inhibit_sentinels = 1; 2108#endif 2109 kill_buffer_processes (Qnil); 2110 Fdo_auto_save (Qt, Qnil); 2111 2112#ifdef CLASH_DETECTION 2113 unlock_all_files (); 2114#endif 2115 2116#ifdef VMS 2117 kill_vms_processes (); 2118#endif 2119 2120#if 0 /* This triggers a bug in XCloseDisplay and is not needed. */ 2121#ifdef HAVE_X_WINDOWS 2122 /* It's not safe to call intern here. Maybe we are crashing. */ 2123 if (!noninteractive && SYMBOLP (Vwindow_system) 2124 && SCHARS (SYMBOL_NAME (Vwindow_system)) == 1 2125 && SREF (SYMBOL_NAME (Vwindow_system), 0) == 'x' 2126 && ! no_x) 2127 Fx_close_current_connection (); 2128#endif /* HAVE_X_WINDOWS */ 2129#endif 2130 2131#ifdef SIGIO 2132 /* There is a tendency for a SIGIO signal to arrive within exit, 2133 and cause a SIGHUP because the input descriptor is already closed. */ 2134 unrequest_sigio (); 2135 signal (SIGIO, SIG_IGN); 2136#endif 2137 2138#ifdef WINDOWSNT 2139 term_ntproc (); 2140#endif 2141 2142 /* Do this only if terminating normally, we want glyph matrices 2143 etc. in a core dump. */ 2144 if (sig == 0 || sig == SIGTERM) 2145 { 2146 check_glyph_memory (); 2147 check_message_stack (); 2148 } 2149 2150#ifdef MSDOS 2151 dos_cleanup (); 2152#endif 2153} 2154 2155 2156 2157#ifndef CANNOT_DUMP 2158 2159#ifdef HAVE_SHM 2160 2161DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0, 2162 doc: /* Dump current state of Emacs into data file FILENAME. 2163This function exists on systems that use HAVE_SHM. */) 2164 (filename) 2165 Lisp_Object filename; 2166{ 2167 extern char my_edata[]; 2168 Lisp_Object tem; 2169 2170 check_pure_size (); 2171 CHECK_STRING (filename); 2172 filename = Fexpand_file_name (filename, Qnil); 2173 2174 tem = Vpurify_flag; 2175 Vpurify_flag = Qnil; 2176 2177 fflush (stdout); 2178 /* Tell malloc where start of impure now is. */ 2179 /* Also arrange for warnings when nearly out of space. */ 2180#ifndef SYSTEM_MALLOC 2181 memory_warnings (my_edata, malloc_warning); 2182#endif 2183 map_out_data (SDATA (filename)); 2184 2185 Vpurify_flag = tem; 2186 2187 return Qnil; 2188} 2189 2190#else /* not HAVE_SHM */ 2191 2192DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0, 2193 doc: /* Dump current state of Emacs into executable file FILENAME. 2194Take symbols from SYMFILE (presumably the file you executed to run Emacs). 2195This is used in the file `loadup.el' when building Emacs. 2196 2197You must run Emacs in batch mode in order to dump it. */) 2198 (filename, symfile) 2199 Lisp_Object filename, symfile; 2200{ 2201 extern char my_edata[]; 2202 Lisp_Object tem; 2203 Lisp_Object symbol; 2204 int count = SPECPDL_INDEX (); 2205 2206 check_pure_size (); 2207 2208 if (! noninteractive) 2209 error ("Dumping Emacs works only in batch mode"); 2210 2211#ifdef GNU_LINUX 2212 if (heap_bss_diff > MAX_HEAP_BSS_DIFF) 2213 { 2214 fprintf (stderr, "**************************************************\n"); 2215 fprintf (stderr, "Warning: Your system has a gap between BSS and the\n"); 2216 fprintf (stderr, "heap (%lu byte). This usually means that exec-shield\n", 2217 heap_bss_diff); 2218 fprintf (stderr, "or something similar is in effect. The dump may\n"); 2219 fprintf (stderr, "fail because of this. See the section about \n"); 2220 fprintf (stderr, "exec-shield in etc/PROBLEMS for more information.\n"); 2221 fprintf (stderr, "**************************************************\n"); 2222 } 2223#endif /* GNU_LINUX */ 2224 2225 /* Bind `command-line-processed' to nil before dumping, 2226 so that the dumped Emacs will process its command line 2227 and set up to work with X windows if appropriate. */ 2228 symbol = intern ("command-line-processed"); 2229 specbind (symbol, Qnil); 2230 2231 CHECK_STRING (filename); 2232 filename = Fexpand_file_name (filename, Qnil); 2233 if (!NILP (symfile)) 2234 { 2235 CHECK_STRING (symfile); 2236 if (SCHARS (symfile)) 2237 symfile = Fexpand_file_name (symfile, Qnil); 2238 } 2239 2240 tem = Vpurify_flag; 2241 Vpurify_flag = Qnil; 2242 2243#ifdef HAVE_TZSET 2244 set_time_zone_rule (dump_tz); 2245#ifndef LOCALTIME_CACHE 2246 /* Force a tz reload, since set_time_zone_rule doesn't. */ 2247 tzset (); 2248#endif 2249#endif 2250 2251 fflush (stdout); 2252#ifdef VMS 2253 mapout_data (SDATA (filename)); 2254#else 2255 /* Tell malloc where start of impure now is. */ 2256 /* Also arrange for warnings when nearly out of space. */ 2257#ifndef SYSTEM_MALLOC 2258#ifndef WINDOWSNT 2259 /* On Windows, this was done before dumping, and that once suffices. 2260 Meanwhile, my_edata is not valid on Windows. */ 2261 memory_warnings (my_edata, malloc_warning); 2262#endif /* not WINDOWSNT */ 2263#endif 2264#if !defined (SYSTEM_MALLOC) && defined (HAVE_GTK_AND_PTHREAD) && !defined SYNC_INPUT 2265 /* Pthread may call malloc before main, and then we will get an endless 2266 loop, because pthread_self (see alloc.c) calls malloc the first time 2267 it is called on some systems. */ 2268 reset_malloc_hooks (); 2269#endif 2270#ifdef DOUG_LEA_MALLOC 2271 malloc_state_ptr = malloc_get_state (); 2272#endif 2273 2274#ifdef USE_MMAP_FOR_BUFFERS 2275 mmap_set_vars (0); 2276#endif 2277 unexec (SDATA (filename), 2278 !NILP (symfile) ? SDATA (symfile) : 0, my_edata, 0, 0); 2279#ifdef USE_MMAP_FOR_BUFFERS 2280 mmap_set_vars (1); 2281#endif 2282#ifdef DOUG_LEA_MALLOC 2283 free (malloc_state_ptr); 2284#endif 2285#endif /* not VMS */ 2286 2287 Vpurify_flag = tem; 2288 2289 return unbind_to (count, Qnil); 2290} 2291 2292#endif /* not HAVE_SHM */ 2293 2294#endif /* not CANNOT_DUMP */ 2295 2296#if HAVE_SETLOCALE 2297/* Recover from setlocale (LC_ALL, ""). */ 2298void 2299fixup_locale () 2300{ 2301 /* The Emacs Lisp reader needs LC_NUMERIC to be "C", 2302 so that numbers are read and printed properly for Emacs Lisp. */ 2303 setlocale (LC_NUMERIC, "C"); 2304} 2305 2306/* Set system locale CATEGORY, with previous locale *PLOCALE, to 2307 DESIRED_LOCALE. */ 2308static void 2309synchronize_locale (category, plocale, desired_locale) 2310 int category; 2311 Lisp_Object *plocale; 2312 Lisp_Object desired_locale; 2313{ 2314 if (! EQ (*plocale, desired_locale)) 2315 { 2316 *plocale = desired_locale; 2317 setlocale (category, (STRINGP (desired_locale) 2318 ? (char *) SDATA (desired_locale) 2319 : "")); 2320 } 2321} 2322 2323/* Set system time locale to match Vsystem_time_locale, if possible. */ 2324void 2325synchronize_system_time_locale () 2326{ 2327 synchronize_locale (LC_TIME, &Vprevious_system_time_locale, 2328 Vsystem_time_locale); 2329} 2330 2331/* Set system messages locale to match Vsystem_messages_locale, if 2332 possible. */ 2333void 2334synchronize_system_messages_locale () 2335{ 2336#ifdef LC_MESSAGES 2337 synchronize_locale (LC_MESSAGES, &Vprevious_system_messages_locale, 2338 Vsystem_messages_locale); 2339#endif 2340} 2341#endif /* HAVE_SETLOCALE */ 2342 2343#ifndef SEPCHAR 2344#define SEPCHAR ':' 2345#endif 2346 2347Lisp_Object 2348decode_env_path (evarname, defalt) 2349 char *evarname, *defalt; 2350{ 2351 register char *path, *p; 2352 Lisp_Object lpath, element, tem; 2353 2354 /* It's okay to use getenv here, because this function is only used 2355 to initialize variables when Emacs starts up, and isn't called 2356 after that. */ 2357 if (evarname != 0) 2358 path = (char *) getenv (evarname); 2359 else 2360 path = 0; 2361 if (!path) 2362 path = defalt; 2363#ifdef DOS_NT 2364 /* Ensure values from the environment use the proper directory separator. */ 2365 if (path) 2366 { 2367 p = alloca (strlen (path) + 1); 2368 strcpy (p, path); 2369 path = p; 2370 2371 if ('/' == DIRECTORY_SEP) 2372 dostounix_filename (path); 2373 else 2374 unixtodos_filename (path); 2375 } 2376#endif 2377 lpath = Qnil; 2378 while (1) 2379 { 2380 p = index (path, SEPCHAR); 2381 if (!p) p = path + strlen (path); 2382 element = (p - path ? make_string (path, p - path) 2383 : build_string (".")); 2384 2385 /* Add /: to the front of the name 2386 if it would otherwise be treated as magic. */ 2387 tem = Ffind_file_name_handler (element, Qt); 2388 2389 /* However, if the handler says "I'm safe", 2390 don't bother adding /:. */ 2391 if (SYMBOLP (tem)) 2392 { 2393 Lisp_Object prop; 2394 prop = Fget (tem, intern ("safe-magic")); 2395 if (! NILP (prop)) 2396 tem = Qnil; 2397 } 2398 2399 if (! NILP (tem)) 2400 element = concat2 (build_string ("/:"), element); 2401 2402 lpath = Fcons (element, lpath); 2403 if (*p) 2404 path = p + 1; 2405 else 2406 break; 2407 } 2408 return Fnreverse (lpath); 2409} 2410 2411void 2412syms_of_emacs () 2413{ 2414 Qfile_name_handler_alist = intern ("file-name-handler-alist"); 2415 staticpro (&Qfile_name_handler_alist); 2416 2417#ifndef CANNOT_DUMP 2418#ifdef HAVE_SHM 2419 defsubr (&Sdump_emacs_data); 2420#else 2421 defsubr (&Sdump_emacs); 2422#endif 2423#endif 2424 2425 defsubr (&Skill_emacs); 2426 2427 defsubr (&Sinvocation_name); 2428 defsubr (&Sinvocation_directory); 2429 2430 DEFVAR_LISP ("command-line-args", &Vcommand_line_args, 2431 doc: /* Args passed by shell to Emacs, as a list of strings. 2432Many arguments are deleted from the list as they are processed. */); 2433 2434 DEFVAR_LISP ("system-type", &Vsystem_type, 2435 doc: /* Value is symbol indicating type of operating system you are using. 2436Special values: 2437 `gnu/linux' compiled for a GNU/Linux system. 2438 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...). 2439 `macos' compiled for Mac OS 9. 2440 `ms-dos' compiled as an MS-DOS application. 2441 `windows-nt' compiled as a native W32 application. 2442 `cygwin' compiled using the Cygwin library. 2443 `vax-vms' or 2444 `axp-vms' compiled for a (Open)VMS system. 2445Anything else indicates some sort of Unix system. */); 2446 Vsystem_type = intern (SYSTEM_TYPE); 2447 2448 DEFVAR_LISP ("system-configuration", &Vsystem_configuration, 2449 doc: /* Value is string indicating configuration Emacs was built for. 2450On MS-Windows, the value reflects the OS flavor and version on which 2451Emacs is running. */); 2452 Vsystem_configuration = build_string (EMACS_CONFIGURATION); 2453 2454 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options, 2455 doc: /* String containing the configuration options Emacs was built with. */); 2456 Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS); 2457 2458 DEFVAR_BOOL ("noninteractive", &noninteractive1, 2459 doc: /* Non-nil means Emacs is running without interactive terminal. */); 2460 2461 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook, 2462 doc: /* Hook to be run when kill-emacs is called. 2463Since `kill-emacs' may be invoked when the terminal is disconnected (or 2464in other similar situations), functions placed on this hook should not 2465expect to be able to interact with the user. To ask for confirmation, 2466see `kill-emacs-query-functions' instead. 2467 2468The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */); 2469 Vkill_emacs_hook = Qnil; 2470 2471 empty_string = build_string (""); 2472 staticpro (&empty_string); 2473 2474 DEFVAR_INT ("emacs-priority", &emacs_priority, 2475 doc: /* Priority for Emacs to run at. 2476This value is effective only if set before Emacs is dumped, 2477and only if the Emacs executable is installed with setuid to permit 2478it to change priority. (Emacs sets its uid back to the real uid.) 2479Currently, you need to define SET_EMACS_PRIORITY in `config.h' 2480before you compile Emacs, to enable the code for this feature. */); 2481 emacs_priority = 0; 2482 2483 DEFVAR_LISP ("path-separator", &Vpath_separator, 2484 doc: /* String containing the character that separates directories in 2485search paths, such as PATH and other similar environment variables. */); 2486 { 2487 char c = SEPCHAR; 2488 Vpath_separator = make_string (&c, 1); 2489 } 2490 2491 DEFVAR_LISP ("invocation-name", &Vinvocation_name, 2492 doc: /* The program name that was used to run Emacs. 2493Any directory names are omitted. */); 2494 2495 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory, 2496 doc: /* The directory in which the Emacs executable was found, to run it. 2497The value is nil if that directory's name is not known. */); 2498 2499 DEFVAR_LISP ("installation-directory", &Vinstallation_directory, 2500 doc: /* A directory within which to look for the `lib-src' and `etc' directories. 2501This is non-nil when we can't find those directories in their standard 2502installed locations, but we can find them 2503near where the Emacs executable was found. */); 2504 Vinstallation_directory = Qnil; 2505 2506 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale, 2507 doc: /* System locale for messages. */); 2508 Vsystem_messages_locale = Qnil; 2509 2510 DEFVAR_LISP ("previous-system-messages-locale", 2511 &Vprevious_system_messages_locale, 2512 doc: /* Most recently used system locale for messages. */); 2513 Vprevious_system_messages_locale = Qnil; 2514 2515 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale, 2516 doc: /* System locale for time. */); 2517 Vsystem_time_locale = Qnil; 2518 2519 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale, 2520 doc: /* Most recently used system locale for time. */); 2521 Vprevious_system_time_locale = Qnil; 2522} 2523 2524/* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e 2525 (do not change this comment) */ 2526