emacs.c 37 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
#ifndef O_RDWR
#define O_RDWR 2
#endif

56 57 58 59
extern void malloc_warning ();
extern char *index ();
extern char *strerror ();

Jim Blandy's avatar
Jim Blandy committed
60 61 62
/* Command line args from shell, as list of strings */
Lisp_Object Vcommand_line_args;

63 64 65 66
/* The name under which Emacs was invoked, with any leading directory
   names discarded.  */
Lisp_Object Vinvocation_name;

67 68 69
/* The directory name from which Emacs was invoked.  */
Lisp_Object Vinvocation_directory;

70 71 72 73
/* The directory name in which to find subdirs such as lisp and etc.
   nil means get them only from PATH_LOADSEARCH.  */
Lisp_Object Vinstallation_directory;

Jim Blandy's avatar
Jim Blandy committed
74 75 76
/* Hook run by `kill-emacs' before it does really anything.  */
Lisp_Object Vkill_emacs_hook;

Jim Blandy's avatar
Jim Blandy committed
77 78 79 80 81
/* Set nonzero after Emacs has started up the first time.
  Prevents reinitialization of the Lisp world and keymaps
  on subsequent starts.  */
int initialized;

82
/* Variable whose value is symbol giving operating system type.  */
Jim Blandy's avatar
Jim Blandy committed
83
Lisp_Object Vsystem_type;
84 85 86

/* Variable whose value is string giving configuration built for.  */
Lisp_Object Vsystem_configuration;
87 88 89 90 91

/* Variable whose value is string giving configuration options,
   for use when reporting bugs.  */
Lisp_Object Vsystem_configuration_options;

Jim Blandy's avatar
Jim Blandy committed
92 93 94 95
/* 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;

96 97 98
/* 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.  */
99 100
int emacs_priority;

101 102 103 104
/* If non-zero a filter or a sentinel is running.  Tested to save the match
   data on the first attempt to change it inside asynchronous code. */
int running_asynch_code;

105
#ifdef BSD_PGRPS
106 107 108 109
/* See sysdep.c.  */
extern int inherited_pgroup;
#endif

Jim Blandy's avatar
Jim Blandy committed
110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138
#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;
139 140 141 142

/* Save argv and argc.  */
char **initial_argv;
int initial_argc;
143 144

static void sort_args ();
Jim Blandy's avatar
Jim Blandy committed
145 146 147 148 149 150 151 152

/* 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
153
SIGTYPE
Jim Blandy's avatar
Jim Blandy committed
154 155 156 157 158 159 160
fatal_error_signal (sig)
     int sig;
{
  fatal_error_code = sig;
  signal (sig, SIG_DFL);

  /* If fatal error occurs in code below, avoid infinite recursion.  */
161 162 163
  if (! fatal_error_in_progress)
    {
      fatal_error_in_progress = 1;
Jim Blandy's avatar
Jim Blandy committed
164

165
      shut_down_emacs (sig, 0, Qnil);
166
    }
Jim Blandy's avatar
Jim Blandy committed
167 168 169 170

#ifdef VMS
  LIB$STOP (SS$_ABORT);
#else
171 172 173 174
  /* 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.  */
175
#ifndef MSDOS
176
  sigunblock (sigmask (fatal_error_code));
177
#endif
Jim Blandy's avatar
Jim Blandy committed
178 179 180
  kill (getpid (), fatal_error_code);
#endif /* not VMS */
}
181 182 183

#ifdef SIGDANGER

Richard M. Stallman's avatar
Richard M. Stallman committed
184
/* Handler for SIGDANGER.  */
185 186 187 188 189 190 191
SIGTYPE
memory_warning_signal (sig)
     int sig;
{
  signal (sig, memory_warning_signal);

  malloc_warning ("Operating system warns that virtual memory is running low.\n");
192 193 194

  /* It might be unsafe to call do_auto_save now.  */
  force_auto_save_soon ();
195 196
}
#endif
Jim Blandy's avatar
Jim Blandy committed
197 198 199 200 201 202 203 204 205 206

/* 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;
207
  Lisp_Object name, dir;
Jim Blandy's avatar
Jim Blandy committed
208

209 210 211
  initial_argv = argv;
  initial_argc = argc;

212
  Vinvocation_name = Ffile_name_nondirectory (build_string (argv[0]));
213 214 215 216 217 218 219
  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
220
		       EXEC_SUFFIXES, &found, 1);
221
      if (yes == 1)
222 223
	Vinvocation_directory = Ffile_name_directory (found);
    }
224

225 226 227 228 229 230 231 232
  Vinstallation_directory = Qnil;

  if (!NILP (Vinvocation_directory))
    {
      dir = Vinvocation_directory;
      name = Fexpand_file_name (Vinvocation_name, dir);
      while (1)
	{
233
	  Lisp_Object tem, lib_src_exists;
234 235
	  Lisp_Object etc_exists, info_exists;

236 237 238 239 240 241
	  /* See if dir contains subdirs for use by Emacs.
	     Check for the ones that would exist in a build directory,
	     not including lisp and info.  */
	  tem = Fexpand_file_name (build_string ("lib-src"), dir);
	  lib_src_exists = Ffile_exists_p (tem);
	  if (!NILP (lib_src_exists))
242
	    {
243 244 245
	      tem = Fexpand_file_name (build_string ("etc"), dir);
	      etc_exists = Ffile_exists_p (tem);
	      if (!NILP (etc_exists))
246
		{
247 248 249
		  Vinstallation_directory
		    = Ffile_name_as_directory (dir);
		  break;
250 251 252 253
		}
	    }

	  /* See if dir's parent contains those subdirs.  */
254 255 256
	  tem = Fexpand_file_name (build_string ("../lib-src"), dir);
	  lib_src_exists = Ffile_exists_p (tem);
	  if (!NILP (lib_src_exists))
257
	    {
258 259 260
	      tem = Fexpand_file_name (build_string ("../etc"), dir);
	      etc_exists = Ffile_exists_p (tem);
	      if (!NILP (etc_exists))
261
		{
262 263 264 265
		  tem = Fexpand_file_name (build_string (".."), dir);
		  Vinstallation_directory
		    = Ffile_name_as_directory (tem);
		  break;
266 267 268 269 270 271 272 273
		}
	    }

	  /* If the Emacs executable is actually a link,
	     next try the dir that the link points into.  */
	  tem = Ffile_symlink_p (name);
	  if (!NILP (tem))
	    {
274
	      name = Fexpand_file_name (tem, dir);
275 276 277 278 279 280 281
	      dir = Ffile_name_directory (name);
	    }
	  else
	    break;
	}
    }

Jim Blandy's avatar
Jim Blandy committed
282 283 284 285 286 287 288 289 290
  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);
    }
}
291 292 293 294 295 296 297 298 299

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);
}

300 301 302 303 304 305 306 307
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
308 309 310 311 312 313 314 315 316

#ifdef VMS
#ifdef LINK_CRTL_SHARE
#ifdef SHAREABLE_LIB_BUG
extern noshare char **environ;
#endif /* SHAREABLE_LIB_BUG */
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */

317
#ifndef ORDINARY_LINK
318 319 320 321 322
/* 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__
323
#ifndef GCC_CTORS_IN_LIBC
324
__do_global_ctors ()
325
{}
326 327
__do_global_ctors_aux ()
{}
328 329
__do_global_dtors ()
{}
330 331
/* Linux has a bug in its library; avoid an error.  */
#ifndef LINUX
332
char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
333
#endif
334
char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
335
#endif /* GCC_CTORS_IN_LIBC */
336
__main ()
337 338
{}
#endif /* __GNUC__ */
339
#endif /* ORDINARY_LINK */
340

Karl Heuer's avatar
Karl Heuer committed
341 342 343 344 345 346 347 348 349
/* Test whether the next argument in ARGV matches SSTR or a prefix of
   LSTR (at least MINLEN characters).  If so, then if VALPTR is non-null
   (the argument is supposed to have a value) store in *VALPTR either
   the next argument or the portion of this one after the equal sign.
   ARGV is read starting at position *SKIPPTR; this index is advanced
   by the number of arguments used.

   Too bad we can't just use getopt for all of this, but we don't have
   enough information to do it right.  */
350

Karl Heuer's avatar
Karl Heuer committed
351
static int
352
argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr)
Karl Heuer's avatar
Karl Heuer committed
353
     char **argv;
354
     int argc;
Karl Heuer's avatar
Karl Heuer committed
355 356 357 358 359 360 361 362
     char *sstr;
     char *lstr;
     int minlen;
     char **valptr;
     int *skipptr;
{
  char *p;
  int arglen;
363 364 365 366 367 368 369
  char *arg;

  /* Don't access argv[argc]; give up in advance.  */
  if (argc <= *skipptr + 1)
    return 0;

  arg = argv[*skipptr+1];
Karl Heuer's avatar
Karl Heuer committed
370 371 372 373 374 375 376 377 378 379 380 381 382 383 384
  if (arg == NULL)
    return 0;
  if (strcmp (arg, sstr) == 0)
    {
      if (valptr != NULL)
	{
	  *valptr = argv[*skipptr+2];
	  *skipptr += 2;
	}
      else
	*skipptr += 1;
      return 1;
    }
  arglen = (valptr != NULL && (p = index (arg, '=')) != NULL
	    ? p - arg : strlen (arg));
385
  if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0)
Karl Heuer's avatar
Karl Heuer committed
386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409
    return 0;
  else if (valptr == NULL)
    {
      *skipptr += 1;
      return 1;
    }
  else if (p != NULL)
    {
      *valptr = p+1;
      *skipptr += 1;
      return 1;
    }
  else if (argv[*skipptr+2] != NULL)
    {
      *valptr = argv[*skipptr+2];
      *skipptr += 2;
      return 1;
    }
  else
    {
      return 0;
    }
}

Jim Blandy's avatar
Jim Blandy committed
410 411 412 413 414 415 416 417 418 419 420
/* 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;

421 422
  sort_args (argc, argv);

423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438
  if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args))
    {
      Lisp_Object tem;
      tem = Fsymbol_value (intern ("emacs-version"));
      if (!STRINGP (tem))
	{
	  fprintf (stderr, "Invalid value of `emacs-version'\n");
	  exit (1);
	}
      else
	{
	  printf ("%s\n", XSTRING (tem)->data);
	  exit (0);
	}
    }

Jim Blandy's avatar
Jim Blandy committed
439 440
/* Map in shared memory, if we are using that.  */
#ifdef HAVE_SHM
441
  if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
442 443 444 445 446 447 448 449 450 451 452 453 454
    {
      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

455
#ifdef NeXT
456
  extern int malloc_cookie;
457 458 459 460 461 462 463

  /* 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
464 465
#ifdef VMS
  /* If -map specified, map the data file in */
Karl Heuer's avatar
Karl Heuer committed
466 467
  {
    char *file;
468
    if (argmatch (argv, argc, "-map", "--map-data", 3, &mapin_file, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
469 470
      mapin_data (file);
  }
Jim Blandy's avatar
Jim Blandy committed
471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500

#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);
501

Jim Blandy's avatar
Jim Blandy committed
502 503 504 505 506 507 508 509 510 511 512
#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)
513 514 515 516 517 518 519 520
    {
      /* 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
521 522
#endif	/* not SYSTEM_MALLOC */

523 524 525 526 527 528 529 530 531
#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 */

532
#ifdef SET_EMACS_PRIORITY
533
  if (emacs_priority)
534
    nice (emacs_priority);
Jim Blandy's avatar
Jim Blandy committed
535
  setuid (getuid ());
536
#endif /* SET_EMACS_PRIORITY */
Jim Blandy's avatar
Jim Blandy committed
537

538
#ifdef EXTRA_INITIALIZE
539
  EXTRA_INITIALIZE;
540 541
#endif

Jim Blandy's avatar
Jim Blandy committed
542 543
  inhibit_window_system = 0;

Jim Blandy's avatar
Jim Blandy committed
544
  /* Handle the -t switch, which specifies filename to use as terminal */
Karl Heuer's avatar
Karl Heuer committed
545 546
  {
    char *term;
547
    if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565
      {
	int result;
	close (0);
	close (1);
	result = open (term, O_RDWR, 2 );
	if (result < 0)
	  {
	    char *errstring = strerror (errno);
	    fprintf (stderr, "emacs: %s: %s\n", term, errstring);
	    exit (1);
	  }
	dup (0);
	if (! isatty (0))
	  {
	    fprintf (stderr, "emacs: %s: not a tty\n", term);
	    exit (1);
	  }
	fprintf (stderr, "Using %s\n", term);
Jim Blandy's avatar
Jim Blandy committed
566
#ifdef HAVE_X_WINDOWS
Karl Heuer's avatar
Karl Heuer committed
567
	inhibit_window_system = 1; /* -t => -nw */
Jim Blandy's avatar
Jim Blandy committed
568
#endif
Karl Heuer's avatar
Karl Heuer committed
569 570
      }
  }
571
  if (argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
572
    inhibit_window_system = 1;
Jim Blandy's avatar
Jim Blandy committed
573

Karl Heuer's avatar
Karl Heuer committed
574
  /* Handle the -batch switch, which means don't do interactive display.  */
Jim Blandy's avatar
Jim Blandy committed
575
  noninteractive = 0;
576
  if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
577 578 579
    noninteractive = 1;

  /* Handle the --help option, which gives a usage message..  */
580
  if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
581
    {
Karl Heuer's avatar
Karl Heuer committed
582 583 584 585 586 587 588
      printf ("\
Usage: %s [-t term] [--terminal term]  [-nw] [--no-windows]  [--batch]\n\
      [-q] [--no-init-file]  [-u user] [--user user]  [--debug-init]\n\
\(Arguments above this line must be first; those below may be in any order)\n\
      [-f func] [--funcall func]  [-l file] [--load file]  [--insert file]\n\
      file-to-visit  [--kill]\n", argv[0]);
      exit (0);
Jim Blandy's avatar
Jim Blandy committed
589 590
    }

591 592 593 594 595 596 597 598 599 600
#ifdef HAVE_X_WINDOWS
  /* 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.  */
  {
    char *displayname;
    int i;
    int count_before = skip_args;

601
    if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args))
602
      display_arg = 1;
603
    else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args))
604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622
      display_arg = 1;

    /* If we have the form --display=NAME,
       convert it into  -d name.
       This requires inserting a new element into argv.  */
    if (displayname != 0 && skip_args - count_before == 1)
      {
	char **new = (char **) xmalloc (sizeof (char *) * (argc + 2));
	int j;

	for (j = 0; j < count_before + 1; j++)
	  new[j] = argv[j];
	new[count_before + 1] = "-d";
	new[count_before + 2] = displayname;
	for (j = count_before + 2; j <argc; j++)
	  new[j + 1] = argv[j];
	argv = new;
	argc++;
      }
623 624 625
    /* Change --display to -d, when its arg is separate.  */
    else if (displayname != 0 && skip_args > count_before
	     && argv[count_before + 1][1] == '-')
626 627 628 629 630 631 632
      argv[count_before] = "-d";

    /* Don't actually discard this arg.  */
    skip_args = count_before;
  }
#endif

633 634 635 636 637 638 639 640 641 642 643 644 645 646 647
  if (! noninteractive)
    {
#ifdef BSD_PGRPS
      if (initialized)
	{
	  inherited_pgroup = EMACS_GETPGRP (0);
	  setpgrp (0, getpid ());
	}
#else
#if defined (USG5) && defined (INTERRUPT_INPUT)
      setpgrp ();
#endif
#endif
    }

Jim Blandy's avatar
Jim Blandy committed
648 649 650 651
#ifdef POSIX_SIGNALS
  init_signals ();
#endif

Jim Blandy's avatar
Jim Blandy committed
652 653 654 655 656 657 658 659 660 661 662 663 664 665 666
  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);
667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687
#ifdef SIGABRT
      signal (SIGABRT, fatal_error_signal);
#endif
#ifdef SIGHWE
      signal (SIGHWE, fatal_error_signal);
#endif
#ifdef SIGPRE
      signal (SIGPRE, fatal_error_signal);
#endif
#ifdef SIGORE
      signal (SIGORE, fatal_error_signal);
#endif
#ifdef SIGUME
      signal (SIGUME, fatal_error_signal);
#endif
#ifdef SIGDLK
      signal (SIGDLK, fatal_error_signal);
#endif
#ifdef SIGCPULIM
      signal (SIGCPULIM, fatal_error_signal);
#endif
688 689
#ifdef SIGIOT
      /* This is missing on some systems - OS/2, for example.  */
Jim Blandy's avatar
Jim Blandy committed
690
      signal (SIGIOT, fatal_error_signal);
691
#endif
Jim Blandy's avatar
Jim Blandy committed
692 693 694 695
#ifdef SIGEMT
      signal (SIGEMT, fatal_error_signal);
#endif
      signal (SIGFPE, fatal_error_signal);
696
#ifdef SIGBUS
Jim Blandy's avatar
Jim Blandy committed
697
      signal (SIGBUS, fatal_error_signal);
698
#endif
Jim Blandy's avatar
Jim Blandy committed
699
      signal (SIGSEGV, fatal_error_signal);
700
#ifdef SIGSYS
Jim Blandy's avatar
Jim Blandy committed
701
      signal (SIGSYS, fatal_error_signal);
702
#endif
Jim Blandy's avatar
Jim Blandy committed
703 704 705 706 707 708 709 710
      signal (SIGTERM, fatal_error_signal);
#ifdef SIGXCPU
      signal (SIGXCPU, fatal_error_signal);
#endif
#ifdef SIGXFSZ
      signal (SIGXFSZ, fatal_error_signal);
#endif /* SIGXFSZ */

711 712 713 714 715
#ifdef SIGDANGER
      /* This just means available memory is getting low.  */
      signal (SIGDANGER, memory_warning_signal);
#endif

Jim Blandy's avatar
Jim Blandy committed
716
#ifdef AIX
717 718
/* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU.  */
      signal (SIGXCPU, fatal_error_signal);
719
#ifndef _I386
Jim Blandy's avatar
Jim Blandy committed
720
      signal (SIGIOINT, fatal_error_signal);
721
#endif
Jim Blandy's avatar
Jim Blandy committed
722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749
      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 ();
750
  running_asynch_code = 0;
751

752 753 754 755 756 757 758
#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

759 760 761 762
  /* 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 ();
763 764 765 766 767 768
  /* 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
769

770 771
  init_buffer ();	/* Init default directory of main buffer */

772
  init_callproc_1 ();	/* Must precede init_cmdargs and init_sys_modes.  */
773
  init_cmdargs (argc, argv, skip_args);	/* Must precede init_lread.  */
774
  init_callproc ();	/* Must follow init_cmdargs but not init_sys_modes.  */
Jim Blandy's avatar
Jim Blandy committed
775
  init_lread ();
Jim Blandy's avatar
Jim Blandy committed
776 777 778 779

  if (!noninteractive)
    {
#ifdef VMS
Jim Blandy's avatar
Jim Blandy committed
780
      init_vms_input ();/* init_display calls get_frame_size, that needs this */
Jim Blandy's avatar
Jim Blandy committed
781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798
#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
799 800 801
#ifdef CLASH_DETECTION
  init_filelock ();
#endif /* CLASH_DETECTION */
Jim Blandy's avatar
Jim Blandy committed
802 803 804 805 806 807 808 809 810 811

/* 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
812
      syms_of_lread ();
Jim Blandy's avatar
Jim Blandy committed
813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845
      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
846
      syms_of_frame ();
Jim Blandy's avatar
Jim Blandy committed
847
      syms_of_syntax ();
Karl Heuer's avatar
Karl Heuer committed
848
      syms_of_term ();
Jim Blandy's avatar
Jim Blandy committed
849
      syms_of_undo ();
Joseph Arceneaux's avatar
Joseph Arceneaux committed
850 851 852

      /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
      syms_of_textprop ();
Jim Blandy's avatar
Jim Blandy committed
853 854 855 856 857 858
#ifdef VMS
      syms_of_vmsproc ();
#endif /* VMS */
      syms_of_window ();
      syms_of_xdisp ();
#ifdef HAVE_X_WINDOWS
Jim Blandy's avatar
Jim Blandy committed
859
      syms_of_xterm ();
Jim Blandy's avatar
Jim Blandy committed
860
      syms_of_xfns ();
861
      syms_of_xfaces ();
Jim Blandy's avatar
Jim Blandy committed
862 863 864
#ifdef HAVE_X11
      syms_of_xselect ();
#endif
865
#ifdef HAVE_X_MENU
Jim Blandy's avatar
Jim Blandy committed
866 867 868 869
      syms_of_xmenu ();
#endif /* HAVE_X_MENU */
#endif /* HAVE_X_WINDOWS */

Morten Welinder's avatar
Morten Welinder committed
870 871 872 873 874
#if defined (MSDOS) && !defined (HAVE_X_WINDOWS)
      syms_of_xfaces ();
      syms_of_xmenu ();
#endif

Jim Blandy's avatar
Jim Blandy committed
875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890
#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 ();
891
      keys_of_frame ();
Jim Blandy's avatar
Jim Blandy committed
892 893 894 895
    }

  if (!initialized)
    {
Karl Heuer's avatar
Karl Heuer committed
896
      char *file;
Jim Blandy's avatar
Jim Blandy committed
897
      /* Handle -l loadup-and-dump, args passed by Makefile. */
898
      if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
899
	Vtop_level = Fcons (intern ("load"),
Karl Heuer's avatar
Karl Heuer committed
900
			    Fcons (build_string (file), Qnil));
Jim Blandy's avatar
Jim Blandy committed
901 902
#ifdef CANNOT_DUMP
      /* Unless next switch is -nl, load "loadup.el" first thing.  */
903
      if (!argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
904 905 906 907 908 909 910
	Vtop_level = Fcons (intern ("load"),
			    Fcons (build_string ("loadup.el"), Qnil));
#endif /* CANNOT_DUMP */
    }

  initialized = 1;

911 912
#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
913 914
     zone rather than looking it up every time.  Since localtime() is
     called to bolt the undumping time into the undumped emacs, this
915 916 917 918
     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
919

Karl Heuer's avatar
Karl Heuer committed
920
  /* Handle the GNU standard option --version.  */
921
  if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
922 923 924 925 926 927 928 929
    {
      Lisp_Object ver;
      ver = call0 (intern ("emacs-version"));
      if (STRINGP (ver))
	printf ("%s\n", XSTRING (ver)->data);
      exit (0);
    }

Jim Blandy's avatar
Jim Blandy committed
930 931 932 933 934
  /* Enter editor command loop.  This never returns.  */
  Frecursive_edit ();
  /* NOTREACHED */
}

935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980
/* Sort the args so we can find the most important ones
   at the beginning of argv.  */

/* First, here's a table of all the standard options.  */

struct standard_args
{
  char *name;
  char *longname;
  int priority;
  int nargs;
};

struct standard_args standard_args[] =
{
  { "-nl", "--no-shared-memory", 100, 0 },
  { "-map", "--map-data", 100, 0 },
  { "-t", "--terminal", 90, 1 },
  { "-d", "--display", 80, 1 },
  { "-display", 0, 80, 1 },
  { "-nw", "--no-windows", 70, 0 },
  { "-batch", "--batch", 60, 0 },
  { "-q", "--no-init-file", 50, 0 },
  { "-no-init-file", 0, 50, 0 },
  { "-no-site-file", "--no-site-file", 40, 0 },
  { "-u", "--user", 30, 1 },
  { "-user", 0, 30, 1 },
  { "-debug-init", "--debug-init", 20, 0 },
  { "-bg", "--background-color", 10, 1 },
  { "-background", 0, 10, 1 },
  { "-fg", "--foreground-color", 10, 1 },
  { "-foreground", 0, 10, 1 },
  { "-bd", "--border-color", 10, 1 },
  { "-bw", "--border-width", 10, 1 },
  { "-ib", "--internal-border", 10, 1 },
  { "-ms", "--mouse-color", 10, 1 },
  { "-cr", "--cursor-color", 10, 1 },
  { "-fn", "--font", 10, 1 },
  { "-font", 0, 10, 1 },
  { "-g", "--geometry", 10, 1 },
  { "-geometry", 0, 10, 1 },
  { "-T", "--title", 10, 1 },
  { "-i", "--icon-type", 10, 1 },
  { "-itype", 0, 10, 1 },
  { "-name", "--name", 10, 1 },
  { "-xrm", "--xrm", 10, 1 },
981 982 983 984 985 986 987 988 989 990 991 992 993
  { "-r", "--reverse-video", 5, 0 },
  { "-rv", 0, 5, 0 },
  { "-reverse", 0, 5, 0 },
  { "-vb", "--vertical-scroll-bars", 5, 0 },
  { "-iconic", "--iconic", 5, 0 },
  /* These have the same priority as ordinary file name args,
     so they are not reordered with respect to those.  */
  { "-l", "--load", 0, 1 },
  { "-load", 0, 0, 1 },
  { "-f", "--funcall", 0, 1 },
  { "-funcall", 0, 0, 1 },
  { "-insert", "--insert", 0, 1 },
  { "-kill", "--kill", -10, 0 },
994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011
};

/* Reorder the elements of ARGV (assumed to have ARGC elements)
   so that the highest priority ones come first.
   Do not change the order of elements of equal priority.
   If an option takes an argument, keep it and its argument together.  */

static void
sort_args (argc, argv)
     int argc;
     char **argv;
{
  char **new = (char **) xmalloc (sizeof (char *) * argc);
  /* For each element of argv,
     the corresponding element of options is:
     0 for an option that takes no arguments,
     1 for an option that takes one argument, etc.
     -1 for an ordinary non-option argument.  */
1012
  int *options = (int *) xmalloc (sizeof (int) * argc);
1013 1014 1015 1016 1017 1018 1019 1020 1021 1022
  int *priority = (int *) xmalloc (sizeof (int) * argc);
  int to = 1;
  int from;
  int i;

  /* Categorize all the options,
     and figure out which argv elts are option arguments.  */
  for (from = 1; from < argc; from++)
    {
      options[from] = -1;
1023
      priority[from] = 0;
1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049
      if (argv[from][0] == '-')
	{
	  int match, thislen;
	  char *equals;

	  /* Look for a match with a known old-fashioned option.  */
	  for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
	    if (!strcmp (argv[from], standard_args[i].name))
	      {
		options[from] = standard_args[i].nargs;
		priority[from] = standard_args[i].priority;
		from += standard_args[i].nargs;
		goto done;
	      }

	  /* Look for a match with a known long option.
	     MATCH is -1 if no match so far, -2 if two or more matches so far,
	     >= 0 (the table index of the match) if just one match so far.  */
	  if (argv[from][1] == '-')
	    {
	      match = -1;
	      thislen = strlen (argv[from]);
	      equals = index (argv[from], '=');
	      if (equals != 0)
		thislen = equals - argv[from];

1050 1051 1052 1053 1054
	      for (i = 0;
		   i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
		if (standard_args[i].longname
		    && !strncmp (argv[from], standard_args[i].longname,
				 thislen))
1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112
		  {
		    if (match == -1)
		      match = i;
		    else
		      match = -2;
		  }

	      /* If we found exactly one match, use that.  */
	      if (match >= 0)
		{
		  options[from] = standard_args[match].nargs;
		  priority[from] = standard_args[match].priority;
		  /* If --OPTION=VALUE syntax is used,
		     this option uses just one argv element.  */
		  if (equals != 0)
		    options[from] = 0;
		  from += options[from];
		}
	    }
	done: ;
	}
    }

  /* Copy the arguments, in order of decreasing priority, to NEW.  */
  new[0] = argv[0];
  while (to < argc)
    {
      int best = -1;
      int best_priority = -2;

      /* Find the highest priority remaining option.
	 If several have equal priority, take the first of them.  */
      for (from = 1; from < argc; from++)
	{
	  if (argv[from] != 0 && priority[from] > best_priority)
	    {
	      best_priority = priority[from];
	      best = from;
	    }
	  /* Skip option arguments--they are tied to the options.  */
	  if (options[from] > 0)
	    from += options[from];
	}
	    
      if (best < 0)
	abort ();

      /* Copy the highest priority remaining option, with its args, to NEW.  */
      new[to++] = argv[best];
      for (i = 0; i < options[best]; i++)
	new[to++] = argv[best + i + 1];

      /* Clear out this option in ARGV.  */
      argv[best] = 0;
      for (i = 0; i < options[best]; i++)
	argv[best + i + 1] = 0;
    }

1113
  bcopy (new, argv, sizeof (char *) * argc);
1114 1115
}

Jim Blandy's avatar
Jim Blandy committed
1116
DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P",
1117
  "Exit the Emacs job and kill it.\n\
Jim Blandy's avatar
Jim Blandy committed
1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134
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
1135
  if (!NILP (Vrun_hooks) && !noninteractive)
Jim Blandy's avatar
Jim Blandy committed
1136 1137 1138 1139 1140 1141 1142 1143 1144
    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  */
1145

1146
  shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil);
1147

1148
  exit (INTEGERP (arg) ? XINT (arg)
Jim Blandy's avatar
Jim Blandy committed
1149 1150 1151 1152 1153 1154 1155 1156
#ifdef VMS
	: 1
#else
	: 0
#endif
	);
  /* NOTREACHED */
}
1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168


/* 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.  */
1169

1170
void
1171
shut_down_emacs (sig, no_x, stuff)
1172
     int sig, no_x;
1173
     Lisp_Object stuff;
1174
{
1175 1176 1177
  /* Prevent running of hooks from now on.  */
  Vrun_hooks = Qnil;

1178 1179 1180
  /* If we are controlling the terminal, reset terminal modes */
#ifdef EMACS_HAVE_TTY_PGRP
  {
1181 1182
    int pgrp = EMACS_GETPGRP (0);

1183 1184
    int tpgrp;
    if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1
1185
	&& tpgrp == pgrp)
1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197
      {
	fflush (stdout);
	reset_sys_modes ();
	if (sig && sig != SIGTERM)
	  fprintf (stderr, "Fatal error (%d).", sig);
      }
  }
#else
  fflush (stdout);
  reset_sys_modes ();
#endif

1198 1199
  stuff_buffered_input (stuff);

1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210
  kill_buffer_processes (Qnil);
  Fdo_auto_save (Qt, Qnil);

#ifdef CLASH_DETECTION
  unlock_all_files ();
#endif

#ifdef VMS
  kill_vms_processes ();
#endif

1211
#if 0 /* This triggers a bug in XCloseDisplay and is not needed.  */
1212
#ifdef HAVE_X_WINDOWS
1213 1214 1215 1216 1217
  /* It's not safe to call intern here.  Maybe we are crashing.  */
  if (!noninteractive && SYMBOLP (Vwindow_system)
      && XSYMBOL (Vwindow_system)->name->size == 1
      && XSYMBOL (Vwindow_system)->name->data[0] == 'x'
      && ! no_x)
1218 1219
    Fx_close_current_connection ();
#endif /* HAVE_X_WINDOWS */
1220
#endif
1221

1222 1223 1224 1225 1226 1227 1228 1229 1230
#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
1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243

#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;
{
1244
  extern char my_edata[];
Jim Blandy's avatar
Jim Blandy committed
1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256
  Lisp_Object tem;

  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
1257
  memory_warnings (&my_edata, malloc_warning);
Jim Blandy's avatar
Jim Blandy committed
1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278
#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;
{
1279
  extern char my_edata[];
Jim Blandy's avatar
Jim Blandy committed
1280 1281 1282 1283
  Lisp_Object tem;

  CHECK_STRING (intoname, 0);
  intoname = Fexpand_file_name (intoname, Qnil);
Jim Blandy's avatar
Jim Blandy committed
1284
  if (!NILP (symname))
Jim Blandy's avatar
Jim Blandy committed
1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300
    {
      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
1301 1302 1303
#ifndef WINDOWSNT
  /* On Windows, this was done before dumping, and that once suffices.
     Meanwhile, my_edata is not valid on Windows.  */
1304
  memory_warnings (&my_edata, malloc_warning);
1305
#endif /* not WINDOWSNT */
Jim Blandy's avatar
Jim Blandy committed
1306 1307
#endif
  unexec (XSTRING (intoname)->data,
Jim Blandy's avatar
Jim Blandy committed
1308
	  !NILP (symname) ? XSTRING (symname)->data : 0, &my_edata, 0, 0);
Jim Blandy's avatar
Jim Blandy committed
1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319
#endif /* not VMS */

  Vpurify_flag = tem;

  return Qnil;
}

#endif /* not HAVE_SHM */

#endif /* not CANNOT_DUMP */

1320
#ifndef SEPCHAR
Jim Blandy's avatar
Jim Blandy committed
1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331
#define SEPCHAR ':'
#endif

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

  Lisp_Object lpath;

Jim Blandy's avatar
Jim Blandy committed
1332 1333 1334
  /* 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
1335 1336 1337 1338
  if (evarname != 0)
    path = (char *) getenv (evarname);
  else
    path = 0;
Jim Blandy's avatar
Jim Blandy committed
1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357
  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 ()
{
1358
#ifndef CANNOT_DUMP
Jim Blandy's avatar
Jim Blandy committed
1359 1360 1361 1362
#ifdef HAVE_SHM
  defsubr (&Sdump_emacs_data);
#else
  defsubr (&Sdump_emacs);
1363
#endif
Jim Blandy's avatar
Jim Blandy committed
1364 1365 1366 1367
#endif

  defsubr (&Skill_emacs);

1368
  defsubr (&Sinvocation_name);
1369
  defsubr (&Sinvocation_directory);
1370

Jim Blandy's avatar
Jim Blandy committed
1371 1372 1373 1374 1375 1376 1377
  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);

1378 1379
  DEFVAR_LISP ("system-configuration", &Vsystem_configuration,
    "Value is string indicating configuration Emacs was built for.");
1380
  Vsystem_configuration = build_string (EMACS_CONFIGURATION);
1381

1382 1383 1384 1385
  DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options,
    "String containing the configuration options Emacs was built with.");
  Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS);

Jim Blandy's avatar
Jim Blandy committed
1386 1387
  DEFVAR_BOOL ("noninteractive", &noninteractive1,
    "Non-nil means Emacs is running without interactive terminal.");
Jim Blandy's avatar
Jim Blandy committed
1388 1389

  DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook,
1390 1391 1392
    "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\
1393 1394
expect to be able to interact with the user.  To ask for confirmation,\n\
see `kill-emacs-query-functions' instead.");
1395
  Vkill_emacs_hook = Qnil;
1396 1397 1398 1399 1400

  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\
1401
it to change priority.  (Emacs sets its uid back to the real uid.)\n\
1402
Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1403
before you compile Emacs, to enable the code for this feature.");
1404
  emacs_priority = 0;
1405

1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418
  DEFVAR_LISP ("invocation-name", &Vinvocation_name,
    "The program name that was used to run Emacs.\n\
Any directory names are omitted.");

  DEFVAR_LISP ("invocation-directory", &Vinvocation_directory,
    "The directory in which the Emacs executable was found, to run it.\n\
The value is nil if that directory's name is not known.");

  DEFVAR_LISP ("installation-directory", &Vinstallation_directory,
    "A directory within which to look for the `lib-src' and `etc' directories.\n\
This is non-nil when we can't find those directories in their standard\n\
installed locations, but we can find them\n\
near where the Emacs executable was found.");
1419
  Vinstallation_directory = Qnil;
Jim Blandy's avatar
Jim Blandy committed
1420
}