emacs.c 24.2 KB
Newer Older
Jim Blandy's avatar
Jim Blandy committed
1
/* Fully extensible Emacs, running on Unix, intended for GNU.
2
   Copyright (C) 1985, 1986, 1987, 1993, 1994 Free Software Foundation, Inc.
Jim Blandy's avatar
Jim Blandy committed
3 4 5 6 7

This file is part of GNU Emacs.

GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
8
the Free Software Foundation; either version 2, or (at your option)
Jim Blandy's avatar
Jim Blandy committed
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */


#include <signal.h>
#include <errno.h>

24
#include <config.h>
Jim Blandy's avatar
Jim Blandy committed
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
#include <stdio.h>

#include <sys/types.h>
#include <sys/file.h>

#ifdef VMS
#include <ssdef.h>
#endif

#ifdef BSD
#include <sys/ioctl.h>
#endif

#ifdef APOLLO
#ifndef APOLLO_SR10
#include <default_acl.h>
#endif
#endif

#include "lisp.h"
#include "commands.h"
Joseph Arceneaux's avatar
Joseph Arceneaux committed
46
#include "intervals.h"
Jim Blandy's avatar
Jim Blandy committed
47

48
#include "systty.h"
49
#include "syssignal.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
50
#include "process.h"
Jim Blandy's avatar
Jim Blandy committed
51

Jim Blandy's avatar
Jim Blandy committed
52 53 54 55 56 57 58
#ifndef O_RDWR
#define O_RDWR 2
#endif

/* Command line args from shell, as list of strings */
Lisp_Object Vcommand_line_args;

59 60 61 62
/* The name under which Emacs was invoked, with any leading directory
   names discarded.  */
Lisp_Object Vinvocation_name;

63 64 65
/* The directory name from which Emacs was invoked.  */
Lisp_Object Vinvocation_directory;

Jim Blandy's avatar
Jim Blandy committed
66 67 68
/* Hook run by `kill-emacs' before it does really anything.  */
Lisp_Object Vkill_emacs_hook;

Jim Blandy's avatar
Jim Blandy committed
69 70 71 72 73
/* Set nonzero after Emacs has started up the first time.
  Prevents reinitialization of the Lisp world and keymaps
  on subsequent starts.  */
int initialized;

74
/* Variable whose value is symbol giving operating system type.  */
Jim Blandy's avatar
Jim Blandy committed
75
Lisp_Object Vsystem_type;
76 77 78

/* Variable whose value is string giving configuration built for.  */
Lisp_Object Vsystem_configuration;
Jim Blandy's avatar
Jim Blandy committed
79 80 81 82 83
  
/* If non-zero, emacs should not attempt to use an window-specific code,
   but instead should use the virtual terminal under which it was started */
int inhibit_window_system;

84 85 86
/* If nonzero, set Emacs to run at this priority.  This is also used
   in child_setup and sys_suspend to make sure subshells run at normal
   priority; Those functions have their own extern declaration.  */
87 88
int emacs_priority;

89 90 91 92 93
#ifdef BSD
/* See sysdep.c.  */
extern int inherited_pgroup;
#endif

Jim Blandy's avatar
Jim Blandy committed
94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130
#ifdef HAVE_X_WINDOWS
/* If non-zero, -d was specified, meaning we're using some window system. */
int display_arg;
#endif

/* An address near the bottom of the stack.
   Tells GC how to save a copy of the stack.  */
char *stack_bottom;

#ifdef HAVE_X_WINDOWS
extern Lisp_Object Vwindow_system;
#endif /* HAVE_X_WINDOWS */

#ifdef USG_SHARED_LIBRARIES
/* If nonzero, this is the place to put the end of the writable segment
   at startup.  */

unsigned int bss_end = 0;
#endif

/* Nonzero means running Emacs without interactive terminal.  */

int noninteractive;

/* Value of Lisp variable `noninteractive'.
   Normally same as C variable `noninteractive'
   but nothing terrible happens if user sets this one.  */

int noninteractive1;

/* Signal code for the fatal signal that was received */
int fatal_error_code;

/* Nonzero if handling a fatal error already */
int fatal_error_in_progress;

/* Handle bus errors, illegal instruction, etc. */
Jim Blandy's avatar
Jim Blandy committed
131
SIGTYPE
Jim Blandy's avatar
Jim Blandy committed
132 133 134 135 136 137 138
fatal_error_signal (sig)
     int sig;
{
  fatal_error_code = sig;
  signal (sig, SIG_DFL);

  /* If fatal error occurs in code below, avoid infinite recursion.  */
139 140 141
  if (! fatal_error_in_progress)
    {
      fatal_error_in_progress = 1;
Jim Blandy's avatar
Jim Blandy committed
142

143
      shut_down_emacs (sig, 0, Qnil);
144
    }
Jim Blandy's avatar
Jim Blandy committed
145 146 147 148

#ifdef VMS
  LIB$STOP (SS$_ABORT);
#else
149 150 151 152
  /* Signal the same code; this time it will really be fatal.
     Remember that since we're in a signal handler, the signal we're
     going to send is probably blocked, so we have to unblock it if we
     want to really receive it.  */
153
#ifndef MSDOS
154
  sigunblock (sigmask (fatal_error_code));
155
#endif
Jim Blandy's avatar
Jim Blandy committed
156 157 158
  kill (getpid (), fatal_error_code);
#endif /* not VMS */
}
159 160 161 162 163 164 165 166 167 168 169 170 171

#ifdef SIGDANGER

/* Handle bus errors, illegal instruction, etc. */
SIGTYPE
memory_warning_signal (sig)
     int sig;
{
  signal (sig, memory_warning_signal);

  malloc_warning ("Operating system warns that virtual memory is running low.\n");
}
#endif
Jim Blandy's avatar
Jim Blandy committed
172 173 174 175 176 177 178 179 180 181 182

/* Code for dealing with Lisp access to the Unix command line */

static
init_cmdargs (argc, argv, skip_args)
     int argc;
     char **argv;
     int skip_args;
{
  register int i;

183
  Vinvocation_name = Ffile_name_nondirectory (build_string (argv[0]));
184 185 186 187 188 189 190
  Vinvocation_directory = Ffile_name_directory (build_string (argv[0]));
  /* If we got no directory in argv[0], search PATH to find where
     Emacs actually came from.  */
  if (NILP (Vinvocation_directory))
    {
      Lisp_Object found;
      int yes = openp (Vexec_path, Vinvocation_name,
Richard M. Stallman's avatar
Richard M. Stallman committed
191
		       EXEC_SUFFIXES, &found, 1);
192
      if (yes == 1)
193 194
	Vinvocation_directory = Ffile_name_directory (found);
    }
195

Jim Blandy's avatar
Jim Blandy committed
196 197 198 199 200 201 202 203 204
  Vcommand_line_args = Qnil;

  for (i = argc - 1; i >= 0; i--)
    {
      if (i == 0 || i > skip_args)
	Vcommand_line_args
	  = Fcons (build_string (argv[i]), Vcommand_line_args);
    }
}
205 206 207 208 209 210 211 212 213

DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0,
  "Return the program name that was used to run Emacs.\n\
Any directory names are omitted.")
  ()
{
  return Fcopy_sequence (Vinvocation_name);
}

214 215 216 217 218 219 220 221
DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
  0, 0, 0,
  "Return the directory name in which the Emacs executable was located")
  ()
{
  return Fcopy_sequence (Vinvocation_directory);
}

Jim Blandy's avatar
Jim Blandy committed
222 223 224 225 226 227 228 229 230

#ifdef VMS
#ifdef LINK_CRTL_SHARE
#ifdef SHAREABLE_LIB_BUG
extern noshare char **environ;
#endif /* SHAREABLE_LIB_BUG */
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */

231
#ifndef ORDINARY_LINK
232 233 234 235 236
/* We don't include crtbegin.o and crtend.o in the link,
   so these functions and variables might be missed.
   Provide dummy definitions to avoid error.
   (We don't have any real constructors or destructors.)  */
#ifdef __GNUC__
237
__do_global_ctors ()
238
{}
239 240
__do_global_ctors_aux ()
{}
241 242
__do_global_dtors ()
{}
243 244
/* Linux has a bug in its library; avoid an error.  */
#ifndef LINUX
245
char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
246
#endif
247 248
char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
__main ()
249 250
{}
#endif /* __GNUC__ */
251
#endif /* ORDINARY_LINK */
252

Jim Blandy's avatar
Jim Blandy committed
253 254 255 256 257 258 259 260 261 262
/* ARGSUSED */
main (argc, argv, envp)
     int argc;
     char **argv;
     char **envp;
{
  char stack_bottom_variable;
  int skip_args = 0;
  extern int errno;
  extern sys_nerr;
263
  extern char *strerror ();
Jim Blandy's avatar
Jim Blandy committed
264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281
  extern void malloc_warning ();

/* Map in shared memory, if we are using that.  */
#ifdef HAVE_SHM
  if (argc > 1 && !strcmp (argv[1], "-nl"))
    {
      map_in_data (0);
      /* The shared memory was just restored, which clobbered this.  */
      skip_args = 1;
    }
  else
    {
      map_in_data (1);
      /* The shared memory was just restored, which clobbered this.  */
      skip_args = 0;
    }
#endif

282
#ifdef NeXT
283
  extern int malloc_cookie;
284 285 286 287 288 289 290

  /* This helps out unexnext.c.  */
  if (initialized)
    if (malloc_jumpstart (malloc_cookie) != 0)
      printf ("malloc jumpstart failed!\n");
#endif /* NeXT */

Jim Blandy's avatar
Jim Blandy committed
291
#ifdef HAVE_X_WINDOWS
Jim Blandy's avatar
Jim Blandy committed
292 293 294 295
  /* Stupid kludge to catch command-line display spec.  We can't
     handle this argument entirely in window system dependent code
     because we don't even know which window system dependent code
     to run until we've recognized this argument.  */
Jim Blandy's avatar
Jim Blandy committed
296 297 298 299
  {
    int i;

    for (i = 1; (i < argc && ! display_arg); i++)
300
      if (!strcmp (argv[i], "-d") || !strcmp (argv[i], "-display"))
Jim Blandy's avatar
Jim Blandy committed
301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341
	display_arg = 1;
  }
#endif

#ifdef VMS
  /* If -map specified, map the data file in */
  if (argc > 2 && ! strcmp (argv[1], "-map"))
    {
      skip_args = 2;
      mapin_data (argv[2]);
    }

#ifdef LINK_CRTL_SHARE
#ifdef SHAREABLE_LIB_BUG
  /* Bletcherous shared libraries! */
  if (!stdin)
    stdin = fdopen (0, "r");
  if (!stdout)
    stdout = fdopen (1, "w");
  if (!stderr)
    stderr = fdopen (2, "w");
  if (!environ)
    environ = envp;
#endif /* SHAREABLE_LIB_BUG */
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */

  /* Record (approximately) where the stack begins.  */
  stack_bottom = &stack_bottom_variable;

#ifdef RUN_TIME_REMAP
  if (initialized)
    run_time_remap (argv[0]);
#endif

#ifdef USG_SHARED_LIBRARIES
  if (bss_end)
    brk (bss_end);
#endif

  clearerr (stdin);
342

Jim Blandy's avatar
Jim Blandy committed
343
#ifdef BSD
344 345 346 347 348
  if (initialized)
    {
      inherited_pgroup = EMACS_GETPGRP (0);
      setpgrp (0, getpid ());
    }
Jim Blandy's avatar
Jim Blandy committed
349 350
#endif

351

Jim Blandy's avatar
Jim Blandy committed
352 353 354 355 356 357 358 359 360 361 362
#ifdef APOLLO
#ifndef APOLLO_SR10
  /* If USE_DOMAIN_ACLS environment variable exists,
     use ACLs rather than UNIX modes. */
  if (egetenv ("USE_DOMAIN_ACLS"))
    default_acl (USE_DEFACL);
#endif
#endif /* APOLLO */

#ifndef SYSTEM_MALLOC
  if (! initialized)
363 364 365 366 367 368 369 370
    {
      /* Arrange to get warning messages as memory fills up.  */
      memory_warnings (0, malloc_warning);

      /* Arrange to disable interrupt input while malloc and friends are
	 running.  */
      uninterrupt_malloc ();
    }
Jim Blandy's avatar
Jim Blandy committed
371 372
#endif	/* not SYSTEM_MALLOC */

373 374 375 376 377 378 379 380 381
#ifdef MSDOS
  /* We do all file input/output as binary files.  When we need to translate
     newlines, we do that manually.  */
  _fmode = O_BINARY;
  (stdin)->_flag &= ~_IOTEXT;
  (stdout)->_flag &= ~_IOTEXT;
  (stderr)->_flag &= ~_IOTEXT;
#endif /* MSDOS */

382 383
#ifdef PRIO_PROCESS
  if (emacs_priority)
384
    nice (emacs_priority);
Jim Blandy's avatar
Jim Blandy committed
385
  setuid (getuid ());
386
#endif /* PRIO_PROCESS */
Jim Blandy's avatar
Jim Blandy committed
387 388 389

  inhibit_window_system = 0;

Jim Blandy's avatar
Jim Blandy committed
390
  /* Handle the -t switch, which specifies filename to use as terminal */
Jim Blandy's avatar
Jim Blandy committed
391 392 393 394 395 396 397 398 399
  if (skip_args + 2 < argc && !strcmp (argv[skip_args + 1], "-t"))
    {
      int result;
      skip_args += 2;
      close (0);
      close (1);
      result = open (argv[skip_args], O_RDWR, 2 );
      if (result < 0)
	{
400
	  char *errstring = strerror (errno);
Jim Blandy's avatar
Jim Blandy committed
401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430
	  fprintf (stderr, "emacs: %s: %s\n", argv[skip_args], errstring);
	  exit (1);
	}
      dup (0);
      if (! isatty (0))
	{
	  fprintf (stderr, "emacs: %s: not a tty\n", argv[skip_args]);
	  exit (1);
	}
      fprintf (stderr, "Using %s\n", argv[skip_args]);
#ifdef HAVE_X_WINDOWS
      inhibit_window_system = 1;	/* -t => -nw */
#endif
    }

  if (skip_args + 1 < argc
      && (!strcmp (argv[skip_args + 1], "-nw")))
    {
      skip_args += 1;
      inhibit_window_system = 1;
    }

/* Handle the -batch switch, which means don't do interactive display.  */
  noninteractive = 0;
  if (skip_args + 1 < argc && !strcmp (argv[skip_args + 1], "-batch"))
    {
      skip_args += 1;
      noninteractive = 1;
    }

Jim Blandy's avatar
Jim Blandy committed
431 432 433 434
#ifdef POSIX_SIGNALS
  init_signals ();
#endif

Jim Blandy's avatar
Jim Blandy committed
435 436 437 438 439 440 441 442 443 444 445 446 447 448 449
  if (
#ifndef CANNOT_DUMP
      ! noninteractive || initialized
#else
      1
#endif
      )
    {
      /* Don't catch these signals in batch mode if not initialized.
	 On some machines, this sets static data that would make
	 signal fail to work right when the dumped Emacs is run.  */
      signal (SIGHUP, fatal_error_signal);
      signal (SIGQUIT, fatal_error_signal);
      signal (SIGILL, fatal_error_signal);
      signal (SIGTRAP, fatal_error_signal);
450 451
#ifdef SIGIOT
      /* This is missing on some systems - OS/2, for example.  */
Jim Blandy's avatar
Jim Blandy committed
452
      signal (SIGIOT, fatal_error_signal);
453
#endif
Jim Blandy's avatar
Jim Blandy committed
454 455 456 457
#ifdef SIGEMT
      signal (SIGEMT, fatal_error_signal);
#endif
      signal (SIGFPE, fatal_error_signal);
458
#ifdef SIGBUS
Jim Blandy's avatar
Jim Blandy committed
459
      signal (SIGBUS, fatal_error_signal);
460
#endif
Jim Blandy's avatar
Jim Blandy committed
461
      signal (SIGSEGV, fatal_error_signal);
462
#ifdef SIGSYS
Jim Blandy's avatar
Jim Blandy committed
463
      signal (SIGSYS, fatal_error_signal);
464
#endif
Jim Blandy's avatar
Jim Blandy committed
465 466 467 468 469 470 471 472
      signal (SIGTERM, fatal_error_signal);
#ifdef SIGXCPU
      signal (SIGXCPU, fatal_error_signal);
#endif
#ifdef SIGXFSZ
      signal (SIGXFSZ, fatal_error_signal);
#endif /* SIGXFSZ */

473 474 475 476 477
#ifdef SIGDANGER
      /* This just means available memory is getting low.  */
      signal (SIGDANGER, memory_warning_signal);
#endif

Jim Blandy's avatar
Jim Blandy committed
478 479 480 481 482
#ifdef AIX
      signal (20, fatal_error_signal);
      signal (21, fatal_error_signal);
      signal (22, fatal_error_signal);
      signal (24, fatal_error_signal);
483 484
#if 0 /* mvn@library.ucla.edu says these are SIGIO on AIX 3.2.4.  */
      signal (23, fatal_error_signal);
Jim Blandy's avatar
Jim Blandy committed
485
#ifdef SIGIO
Jim Blandy's avatar
Jim Blandy committed
486 487
      signal (SIGAIO, fatal_error_signal);
      signal (SIGPTY, fatal_error_signal);
Jim Blandy's avatar
Jim Blandy committed
488
#endif
489
#endif
490
#ifndef _I386
Jim Blandy's avatar
Jim Blandy committed
491
      signal (SIGIOINT, fatal_error_signal);
492
#endif
Jim Blandy's avatar
Jim Blandy committed
493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520
      signal (SIGGRANT, fatal_error_signal);
      signal (SIGRETRACT, fatal_error_signal);
      signal (SIGSOUND, fatal_error_signal);
      signal (SIGMSG, fatal_error_signal);
#endif /* AIX */
    }

  noninteractive1 = noninteractive;

/* Perform basic initializations (not merely interning symbols) */

  if (!initialized)
    {
      init_alloc_once ();
      init_obarray ();
      init_eval_once ();
      init_syntax_once ();	/* Create standard syntax table.  */
		      /* Must be done before init_buffer */
      init_casetab_once ();
      init_buffer_once ();	/* Create buffer table and some buffers */
      init_minibuf_once ();	/* Create list of minibuffers */
			      /* Must precede init_window_once */
      init_window_once ();	/* Init the window system */
    }

  init_alloc ();
  init_eval ();
  init_data ();
521

522 523 524 525 526 527 528
#ifdef MSDOS
  /* Call early 'cause init_environment needs it.  */
  init_dosfns ();
  /* Set defaults for several environment variables.  */
  if (initialized) init_environment (argc, argv, skip_args);
#endif

529 530 531 532
  /* egetenv is a pretty low-level facility, which may get called in
     many circumstances; it seems flimsy to put off initializing it
     until calling init_callproc.  */
  set_process_environment ();
533 534 535 536 537 538
  /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
     if this is not done.  Do it after set_process_environment so that we
     don't pollute Vprocess_environment.  */
#ifdef AIX
  putenv ("LANG=C");
#endif
539

540 541
  init_buffer ();	/* Init default directory of main buffer */

542
  init_callproc_1 ();	/* Must precede init_cmdargs and init_sys_modes.  */
543
  init_cmdargs (argc, argv, skip_args);	/* Must precede init_lread.  */
544
  init_callproc ();	/* Must follow init_cmdargs but not init_sys_modes.  */
Jim Blandy's avatar
Jim Blandy committed
545
  init_lread ();
Jim Blandy's avatar
Jim Blandy committed
546 547 548 549

  if (!noninteractive)
    {
#ifdef VMS
Jim Blandy's avatar
Jim Blandy committed
550
      init_vms_input ();/* init_display calls get_frame_size, that needs this */
Jim Blandy's avatar
Jim Blandy committed
551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568
#endif /* VMS */
      init_display ();	/* Determine terminal type.  init_sys_modes uses results */
    }
  init_keyboard ();	/* This too must precede init_sys_modes */
#ifdef VMS
  init_vmsproc ();	/* And this too. */
#endif /* VMS */
  init_sys_modes ();	/* Init system terminal modes (RAW or CBREAK, etc.) */
  init_xdisp ();
  init_macros ();
  init_editfns ();
#ifdef LISP_FLOAT_TYPE
  init_floatfns ();
#endif
#ifdef VMS
  init_vmsfns ();
#endif /* VMS */
  init_process ();
Jim Blandy's avatar
Jim Blandy committed
569 570 571
#ifdef CLASH_DETECTION
  init_filelock ();
#endif /* CLASH_DETECTION */
Jim Blandy's avatar
Jim Blandy committed
572 573 574 575 576 577 578 579 580 581

/* Intern the names of all standard functions and variables; define standard keys */

  if (!initialized)
    {
      /* The basic levels of Lisp must come first */
      /* And data must come first of all
	 for the sake of symbols like error-message */
      syms_of_data ();
      syms_of_alloc ();
Jim Blandy's avatar
Jim Blandy committed
582
      syms_of_lread ();
Jim Blandy's avatar
Jim Blandy committed
583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615
      syms_of_print ();
      syms_of_eval ();
      syms_of_fns ();
      syms_of_floatfns ();

      syms_of_abbrev ();
      syms_of_buffer ();
      syms_of_bytecode ();
      syms_of_callint ();
      syms_of_casefiddle ();
      syms_of_casetab ();
      syms_of_callproc ();
      syms_of_cmds ();
#ifndef NO_DIR_LIBRARY
      syms_of_dired ();
#endif /* not NO_DIR_LIBRARY */
      syms_of_display ();
      syms_of_doc ();
      syms_of_editfns ();
      syms_of_emacs ();
      syms_of_fileio ();
#ifdef CLASH_DETECTION
      syms_of_filelock ();
#endif /* CLASH_DETECTION */
      syms_of_indent ();
      syms_of_keyboard ();
      syms_of_keymap ();
      syms_of_macros ();
      syms_of_marker ();
      syms_of_minibuf ();
      syms_of_mocklisp ();
      syms_of_process ();
      syms_of_search ();
Jim Blandy's avatar
Jim Blandy committed
616
      syms_of_frame ();
Jim Blandy's avatar
Jim Blandy committed
617 618
      syms_of_syntax ();
      syms_of_undo ();
Joseph Arceneaux's avatar
Joseph Arceneaux committed
619 620 621

      /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
      syms_of_textprop ();
Jim Blandy's avatar
Jim Blandy committed
622 623 624 625 626 627
#ifdef VMS
      syms_of_vmsproc ();
#endif /* VMS */
      syms_of_window ();
      syms_of_xdisp ();
#ifdef HAVE_X_WINDOWS
Jim Blandy's avatar
Jim Blandy committed
628
      syms_of_xterm ();
Jim Blandy's avatar
Jim Blandy committed
629
      syms_of_xfns ();
630
      syms_of_xfaces ();
Jim Blandy's avatar
Jim Blandy committed
631 632 633
#ifdef HAVE_X11
      syms_of_xselect ();
#endif
Jim Blandy's avatar
Jim Blandy committed
634
#ifdef HAVE_X_MENU
Jim Blandy's avatar
Jim Blandy committed
635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654
      syms_of_xmenu ();
#endif /* HAVE_X_MENU */
#endif /* HAVE_X_WINDOWS */

#ifdef SYMS_SYSTEM
      SYMS_SYSTEM;
#endif

#ifdef SYMS_MACHINE
      SYMS_MACHINE;
#endif

      keys_of_casefiddle ();
      keys_of_cmds ();
      keys_of_buffer ();
      keys_of_keyboard ();
      keys_of_keymap ();
      keys_of_macros ();
      keys_of_minibuf ();
      keys_of_window ();
655
      keys_of_frame ();
Jim Blandy's avatar
Jim Blandy committed
656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673
    }

  if (!initialized)
    {
      /* Handle -l loadup-and-dump, args passed by Makefile. */
      if (argc > 2 + skip_args && !strcmp (argv[1 + skip_args], "-l"))
	Vtop_level = Fcons (intern ("load"),
			    Fcons (build_string (argv[2 + skip_args]), Qnil));
#ifdef CANNOT_DUMP
      /* Unless next switch is -nl, load "loadup.el" first thing.  */
      if (!(argc > 1 + skip_args && !strcmp (argv[1 + skip_args], "-nl")))
	Vtop_level = Fcons (intern ("load"),
			    Fcons (build_string ("loadup.el"), Qnil));
#endif /* CANNOT_DUMP */
    }

  initialized = 1;

674 675
#if defined (sun) || defined (LOCALTIME_CACHE)
  /* sun's localtime has a bug.  it caches the value of the time
Jim Blandy's avatar
Jim Blandy committed
676 677
     zone rather than looking it up every time.  Since localtime() is
     called to bolt the undumping time into the undumped emacs, this
678 679 680 681
     results in localtime ignoring the TZ environment variable.
     This flushes the new TZ value into localtime. */
  tzset ();
#endif /* defined (sun) || defined (LOCALTIME_CACHE) */
Jim Blandy's avatar
Jim Blandy committed
682

Jim Blandy's avatar
Jim Blandy committed
683 684 685 686 687 688
  /* Enter editor command loop.  This never returns.  */
  Frecursive_edit ();
  /* NOTREACHED */
}

DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P",
689
  "Exit the Emacs job and kill it.\n\
Jim Blandy's avatar
Jim Blandy committed
690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706
If ARG is an integer, return ARG as the exit program code.\n\
If ARG is a  string, stuff it as keyboard input.\n\n\
The value of `kill-emacs-hook', if not void,\n\
is a list of functions (of no args),\n\
all of which are called before Emacs is actually killed.")
  (arg)
     Lisp_Object arg;
{
  Lisp_Object hook, hook1;
  int i;
  struct gcpro gcpro1;

  GCPRO1 (arg);

  if (feof (stdin))
    arg = Qt;

Jim Blandy's avatar
Jim Blandy committed
707
  if (!NILP (Vrun_hooks) && !noninteractive)
Jim Blandy's avatar
Jim Blandy committed
708 709 710 711 712 713 714 715 716
    call1 (Vrun_hooks, intern ("kill-emacs-hook"));

  UNGCPRO;

/* Is it really necessary to do this deassign
   when we are going to exit anyway?  */
/* #ifdef VMS
  stop_vms_input ();
 #endif  */
717

718
  shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil);
719

Jim Blandy's avatar
Jim Blandy committed
720 721 722 723 724 725 726 727 728
  exit ((XTYPE (arg) == Lisp_Int) ? XINT (arg)
#ifdef VMS
	: 1
#else
	: 0
#endif
	);
  /* NOTREACHED */
}
729 730 731 732 733 734 735 736 737 738 739 740


/* Perform an orderly shutdown of Emacs.  Autosave any modified
   buffers, kill any child processes, clean up the terminal modes (if
   we're in the foreground), and other stuff like that.  Don't perform
   any redisplay; this may be called when Emacs is shutting down in
   the background, or after its X connection has died.

   If SIG is a signal number, print a message for it.

   This is called by fatal signal handlers, X protocol error handlers,
   and Fkill_emacs.  */
741

742
void
743
shut_down_emacs (sig, no_x, stuff)
744
     int sig, no_x;
745
     Lisp_Object stuff;
746 747 748 749
{
  /* If we are controlling the terminal, reset terminal modes */
#ifdef EMACS_HAVE_TTY_PGRP
  {
750 751
    int pgrp = EMACS_GETPGRP (0);

752 753
    int tpgrp;
    if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1
754
	&& tpgrp == pgrp)
755 756 757 758 759 760 761 762 763 764 765 766
      {
	fflush (stdout);
	reset_sys_modes ();
	if (sig && sig != SIGTERM)
	  fprintf (stderr, "Fatal error (%d).", sig);
      }
  }
#else
  fflush (stdout);
  reset_sys_modes ();
#endif

767 768
  stuff_buffered_input (stuff);

769 770 771 772 773 774 775 776 777 778 779
  kill_buffer_processes (Qnil);
  Fdo_auto_save (Qt, Qnil);

#ifdef CLASH_DETECTION
  unlock_all_files ();
#endif

#ifdef VMS
  kill_vms_processes ();
#endif

780 781 782 783 784
#ifdef HAVE_X_WINDOWS
  if (!noninteractive && EQ (Vwindow_system, intern ("x")) && ! no_x)
    Fx_close_current_connection ();
#endif /* HAVE_X_WINDOWS */

785 786 787 788 789 790 791 792 793
#ifdef SIGIO
  /* There is a tendency for a SIGIO signal to arrive within exit,
     and cause a SIGHUP because the input descriptor is already closed.  */
  unrequest_sigio ();
  signal (SIGIO, SIG_IGN);
#endif
}


Jim Blandy's avatar
Jim Blandy committed
794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820

#ifndef CANNOT_DUMP
/* Nothing like this can be implemented on an Apollo.
   What a loss!  */

#ifdef HAVE_SHM

DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0,
  "Dump current state of Emacs into data file FILENAME.\n\
This function exists on systems that use HAVE_SHM.")
  (intoname)
     Lisp_Object intoname;
{
  extern int my_edata;
  Lisp_Object tem;
  extern void malloc_warning ();

  CHECK_STRING (intoname, 0);
  intoname = Fexpand_file_name (intoname, Qnil);

  tem = Vpurify_flag;
  Vpurify_flag = Qnil;

  fflush (stdout);
  /* Tell malloc where start of impure now is */
  /* Also arrange for warnings when nearly out of space.  */
#ifndef SYSTEM_MALLOC
821
  memory_warnings (&my_edata, malloc_warning);
Jim Blandy's avatar
Jim Blandy committed
822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848
#endif
  map_out_data (XSTRING (intoname)->data);

  Vpurify_flag = tem;

  return Qnil;
}

#else /* not HAVE_SHM */

DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0,
  "Dump current state of Emacs into executable file FILENAME.\n\
Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
This is used in the file `loadup.el' when building Emacs.\n\
\n\
Bind `command-line-processed' to nil before dumping,\n\
if you want the dumped Emacs to process its command line\n\
and announce itself normally when it is run.")
  (intoname, symname)
     Lisp_Object intoname, symname;
{
  extern int my_edata;
  Lisp_Object tem;
  extern void malloc_warning ();

  CHECK_STRING (intoname, 0);
  intoname = Fexpand_file_name (intoname, Qnil);
Jim Blandy's avatar
Jim Blandy committed
849
  if (!NILP (symname))
Jim Blandy's avatar
Jim Blandy committed
850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865
    {
      CHECK_STRING (symname, 0);
      if (XSTRING (symname)->size)
	symname = Fexpand_file_name (symname, Qnil);
    }

  tem = Vpurify_flag;
  Vpurify_flag = Qnil;

  fflush (stdout);
#ifdef VMS
  mapout_data (XSTRING (intoname)->data);
#else
  /* Tell malloc where start of impure now is */
  /* Also arrange for warnings when nearly out of space.  */
#ifndef SYSTEM_MALLOC
866
  memory_warnings (&my_edata, malloc_warning);
Jim Blandy's avatar
Jim Blandy committed
867 868
#endif
  unexec (XSTRING (intoname)->data,
Jim Blandy's avatar
Jim Blandy committed
869
	  !NILP (symname) ? XSTRING (symname)->data : 0, &my_edata, 0, 0);
Jim Blandy's avatar
Jim Blandy committed
870 871 872 873 874 875 876 877 878 879 880
#endif /* not VMS */

  Vpurify_flag = tem;

  return Qnil;
}

#endif /* not HAVE_SHM */

#endif /* not CANNOT_DUMP */

881
#ifndef SEPCHAR
Jim Blandy's avatar
Jim Blandy committed
882 883 884 885 886 887 888 889 890 891 892 893
#define SEPCHAR ':'
#endif

Lisp_Object
decode_env_path (evarname, defalt)
     char *evarname, *defalt;
{
  register char *path, *p;
  extern char *index ();

  Lisp_Object lpath;

Jim Blandy's avatar
Jim Blandy committed
894 895 896
  /* It's okay to use getenv here, because this function is only used
     to initialize variables when Emacs starts up, and isn't called
     after that.  */
Jim Blandy's avatar
Jim Blandy committed
897 898 899 900
  if (evarname != 0)
    path = (char *) getenv (evarname);
  else
    path = 0;
Jim Blandy's avatar
Jim Blandy committed
901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919
  if (!path)
    path = defalt;
  lpath = Qnil;
  while (1)
    {
      p = index (path, SEPCHAR);
      if (!p) p = path + strlen (path);
      lpath = Fcons (p - path ? make_string (path, p - path) : Qnil,
		     lpath);
      if (*p)
	path = p + 1;
      else
	break;
    }
  return Fnreverse (lpath);
}

syms_of_emacs ()
{
920
#ifndef CANNOT_DUMP
Jim Blandy's avatar
Jim Blandy committed
921 922 923 924
#ifdef HAVE_SHM
  defsubr (&Sdump_emacs_data);
#else
  defsubr (&Sdump_emacs);
925
#endif
Jim Blandy's avatar
Jim Blandy committed
926 927 928 929
#endif

  defsubr (&Skill_emacs);

930
  defsubr (&Sinvocation_name);
931
  defsubr (&Sinvocation_directory);
932

Jim Blandy's avatar
Jim Blandy committed
933 934 935 936 937 938 939
  DEFVAR_LISP ("command-line-args", &Vcommand_line_args,
    "Args passed by shell to Emacs, as a list of strings.");

  DEFVAR_LISP ("system-type", &Vsystem_type,
    "Value is symbol indicating type of operating system you are using.");
  Vsystem_type = intern (SYSTEM_TYPE);

940 941 942 943
  DEFVAR_LISP ("system-configuration", &Vsystem_configuration,
    "Value is string indicating configuration Emacs was built for.");
  Vsystem_configuration = build_string (CONFIGURATION);

Jim Blandy's avatar
Jim Blandy committed
944 945
  DEFVAR_BOOL ("noninteractive", &noninteractive1,
    "Non-nil means Emacs is running without interactive terminal.");
Jim Blandy's avatar
Jim Blandy committed
946 947

  DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook,
948 949 950
    "Hook to be run whenever kill-emacs is called.\n\
Since kill-emacs may be invoked when the terminal is disconnected (or\n\
in other similar situations), functions placed on this hook should not\n\
951
expect to be able to interact with the user.");
952
  Vkill_emacs_hook = Qnil;
953 954 955 956 957 958 959

  DEFVAR_INT ("emacs-priority", &emacs_priority,
    "Priority for Emacs to run at.\n\
This value is effective only if set before Emacs is dumped,\n\
and only if the Emacs executable is installed with setuid to permit\n\
it to change priority.  (Emacs sets its uid back to the real uid.)");
  emacs_priority = 0;
960 961 962

  staticpro (&Vinvocation_name);
  Vinvocation_name = Qnil;
963 964
  staticpro (&Vinvocation_directory);
  Vinvocation_directory = Qnil;
Jim Blandy's avatar
Jim Blandy committed
965
}