| 1 | /* Fully extensible Emacs, running on Unix, intended for GNU. |
| 2 | Copyright (C) 1985,86,87,93,94,95,97,1998 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GNU Emacs. |
| 5 | |
| 6 | GNU Emacs is free software; you can redistribute it and/or modify |
| 7 | 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) |
| 9 | any later version. |
| 10 | |
| 11 | GNU Emacs is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GNU Emacs; see the file COPYING. If not, write to |
| 18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 19 | Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | |
| 22 | #include <signal.h> |
| 23 | #include <errno.h> |
| 24 | |
| 25 | #include <config.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 BSD_SYSTEM |
| 36 | #include <sys/ioctl.h> |
| 37 | #endif |
| 38 | |
| 39 | #include "lisp.h" |
| 40 | #include "commands.h" |
| 41 | #include "intervals.h" |
| 42 | #include "buffer.h" |
| 43 | |
| 44 | #include "systty.h" |
| 45 | #include "blockinput.h" |
| 46 | #include "syssignal.h" |
| 47 | #include "process.h" |
| 48 | #include "termhooks.h" |
| 49 | #include "keyboard.h" |
| 50 | |
| 51 | #ifdef HAVE_SETRLIMIT |
| 52 | #include <sys/time.h> |
| 53 | #include <sys/resource.h> |
| 54 | #endif |
| 55 | |
| 56 | #ifndef O_RDWR |
| 57 | #define O_RDWR 2 |
| 58 | #endif |
| 59 | |
| 60 | extern void malloc_warning (); |
| 61 | extern void set_time_zone_rule (); |
| 62 | extern char *index (); |
| 63 | extern char *strerror (); |
| 64 | |
| 65 | /* Command line args from shell, as list of strings */ |
| 66 | Lisp_Object Vcommand_line_args; |
| 67 | |
| 68 | /* The name under which Emacs was invoked, with any leading directory |
| 69 | names discarded. */ |
| 70 | Lisp_Object Vinvocation_name; |
| 71 | |
| 72 | /* The directory name from which Emacs was invoked. */ |
| 73 | Lisp_Object Vinvocation_directory; |
| 74 | |
| 75 | /* The directory name in which to find subdirs such as lisp and etc. |
| 76 | nil means get them only from PATH_LOADSEARCH. */ |
| 77 | Lisp_Object Vinstallation_directory; |
| 78 | |
| 79 | /* Hook run by `kill-emacs' before it does really anything. */ |
| 80 | Lisp_Object Vkill_emacs_hook; |
| 81 | |
| 82 | #ifdef SIGUSR1 |
| 83 | /* Hooks for signal USR1 and USR2 handing */ |
| 84 | Lisp_Object Vsignal_USR1_hook; |
| 85 | #ifdef SIGUSR2 |
| 86 | Lisp_Object Vsignal_USR2_hook; |
| 87 | #endif |
| 88 | #endif |
| 89 | |
| 90 | /* Search path separator. */ |
| 91 | Lisp_Object Vpath_separator; |
| 92 | |
| 93 | /* Set nonzero after Emacs has started up the first time. |
| 94 | Prevents reinitialization of the Lisp world and keymaps |
| 95 | on subsequent starts. */ |
| 96 | int initialized; |
| 97 | |
| 98 | #ifdef DOUG_LEA_MALLOC |
| 99 | /* Preserves a pointer to the memory allocated that copies that |
| 100 | static data inside glibc's malloc. */ |
| 101 | void *malloc_state_ptr; |
| 102 | /* From glibc, a routine that returns a copy of the malloc internal state. */ |
| 103 | extern void *malloc_get_state (); |
| 104 | /* From glibc, a routine that overwrites the malloc internal state. */ |
| 105 | extern void malloc_set_state (); |
| 106 | /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while |
| 107 | dumping. Used to work around a bug in glibc's malloc. */ |
| 108 | int malloc_using_checking; |
| 109 | #endif |
| 110 | |
| 111 | /* Variable whose value is symbol giving operating system type. */ |
| 112 | Lisp_Object Vsystem_type; |
| 113 | |
| 114 | /* Variable whose value is string giving configuration built for. */ |
| 115 | Lisp_Object Vsystem_configuration; |
| 116 | |
| 117 | /* Variable whose value is string giving configuration options, |
| 118 | for use when reporting bugs. */ |
| 119 | Lisp_Object Vsystem_configuration_options; |
| 120 | |
| 121 | Lisp_Object Qfile_name_handler_alist; |
| 122 | |
| 123 | /* If non-zero, emacs should not attempt to use an window-specific code, |
| 124 | but instead should use the virtual terminal under which it was started */ |
| 125 | int inhibit_window_system; |
| 126 | |
| 127 | /* If nonzero, set Emacs to run at this priority. This is also used |
| 128 | in child_setup and sys_suspend to make sure subshells run at normal |
| 129 | priority; Those functions have their own extern declaration. */ |
| 130 | int emacs_priority; |
| 131 | |
| 132 | /* If non-zero a filter or a sentinel is running. Tested to save the match |
| 133 | data on the first attempt to change it inside asynchronous code. */ |
| 134 | int running_asynch_code; |
| 135 | |
| 136 | #ifdef BSD_PGRPS |
| 137 | /* See sysdep.c. */ |
| 138 | extern int inherited_pgroup; |
| 139 | #endif |
| 140 | |
| 141 | #ifdef HAVE_X_WINDOWS |
| 142 | /* If non-zero, -d was specified, meaning we're using some window system. */ |
| 143 | int display_arg; |
| 144 | #endif |
| 145 | |
| 146 | /* An address near the bottom of the stack. |
| 147 | Tells GC how to save a copy of the stack. */ |
| 148 | char *stack_bottom; |
| 149 | |
| 150 | #ifdef HAVE_WINDOW_SYSTEM |
| 151 | extern Lisp_Object Vwindow_system; |
| 152 | #endif /* HAVE_WINDOW_SYSTEM */ |
| 153 | |
| 154 | extern Lisp_Object Vauto_save_list_file_name; |
| 155 | |
| 156 | #ifdef USG_SHARED_LIBRARIES |
| 157 | /* If nonzero, this is the place to put the end of the writable segment |
| 158 | at startup. */ |
| 159 | |
| 160 | unsigned int bss_end = 0; |
| 161 | #endif |
| 162 | |
| 163 | /* Nonzero means running Emacs without interactive terminal. */ |
| 164 | |
| 165 | int noninteractive; |
| 166 | |
| 167 | /* Value of Lisp variable `noninteractive'. |
| 168 | Normally same as C variable `noninteractive' |
| 169 | but nothing terrible happens if user sets this one. */ |
| 170 | |
| 171 | int noninteractive1; |
| 172 | |
| 173 | /* Save argv and argc. */ |
| 174 | char **initial_argv; |
| 175 | int initial_argc; |
| 176 | |
| 177 | static void sort_args (); |
| 178 | void syms_of_emacs (); |
| 179 | \f |
| 180 | /* Signal code for the fatal signal that was received */ |
| 181 | int fatal_error_code; |
| 182 | |
| 183 | /* Nonzero if handling a fatal error already */ |
| 184 | int fatal_error_in_progress; |
| 185 | |
| 186 | #ifdef SIGUSR1 |
| 187 | SIGTYPE |
| 188 | handle_USR1_signal (sig) |
| 189 | int sig; |
| 190 | { |
| 191 | struct input_event buf; |
| 192 | |
| 193 | buf.kind = user_signal; |
| 194 | buf.code = 0; |
| 195 | buf.frame_or_window = Fselected_frame (); |
| 196 | buf.modifiers = 0; |
| 197 | buf.timestamp = 0; |
| 198 | |
| 199 | kbd_buffer_store_event (&buf); |
| 200 | } |
| 201 | #endif /* SIGUSR1 */ |
| 202 | |
| 203 | #ifdef SIGUSR2 |
| 204 | SIGTYPE |
| 205 | handle_USR2_signal (sig) |
| 206 | int sig; |
| 207 | { |
| 208 | struct input_event buf; |
| 209 | |
| 210 | buf.kind = user_signal; |
| 211 | buf.code = 1; |
| 212 | buf.frame_or_window = Fselected_frame (); |
| 213 | buf.modifiers = 0; |
| 214 | buf.timestamp = 0; |
| 215 | |
| 216 | kbd_buffer_store_event (&buf); |
| 217 | } |
| 218 | #endif /* SIGUSR2 */ |
| 219 | |
| 220 | /* Handle bus errors, illegal instruction, etc. */ |
| 221 | SIGTYPE |
| 222 | fatal_error_signal (sig) |
| 223 | int sig; |
| 224 | { |
| 225 | fatal_error_code = sig; |
| 226 | signal (sig, SIG_DFL); |
| 227 | |
| 228 | TOTALLY_UNBLOCK_INPUT; |
| 229 | |
| 230 | /* If fatal error occurs in code below, avoid infinite recursion. */ |
| 231 | if (! fatal_error_in_progress) |
| 232 | { |
| 233 | fatal_error_in_progress = 1; |
| 234 | |
| 235 | shut_down_emacs (sig, 0, Qnil); |
| 236 | } |
| 237 | |
| 238 | #ifdef VMS |
| 239 | LIB$STOP (SS$_ABORT); |
| 240 | #else |
| 241 | /* Signal the same code; this time it will really be fatal. |
| 242 | Remember that since we're in a signal handler, the signal we're |
| 243 | going to send is probably blocked, so we have to unblock it if we |
| 244 | want to really receive it. */ |
| 245 | #ifndef MSDOS |
| 246 | sigunblock (sigmask (fatal_error_code)); |
| 247 | #endif |
| 248 | kill (getpid (), fatal_error_code); |
| 249 | #endif /* not VMS */ |
| 250 | } |
| 251 | |
| 252 | #ifdef SIGDANGER |
| 253 | |
| 254 | /* Handler for SIGDANGER. */ |
| 255 | SIGTYPE |
| 256 | memory_warning_signal (sig) |
| 257 | int sig; |
| 258 | { |
| 259 | signal (sig, memory_warning_signal); |
| 260 | |
| 261 | malloc_warning ("Operating system warns that virtual memory is running low.\n"); |
| 262 | |
| 263 | /* It might be unsafe to call do_auto_save now. */ |
| 264 | force_auto_save_soon (); |
| 265 | } |
| 266 | #endif |
| 267 | |
| 268 | /* We define abort, rather than using it from the library, |
| 269 | so that GDB can return from a breakpoint here. |
| 270 | MSDOS has its own definition on msdos.c */ |
| 271 | |
| 272 | #if ! defined (DOS_NT) && ! defined (NO_ABORT) |
| 273 | void |
| 274 | abort () |
| 275 | { |
| 276 | kill (getpid (), SIGABRT); |
| 277 | /* This shouldn't be executed, but it prevents a warning. */ |
| 278 | exit (1); |
| 279 | } |
| 280 | #endif |
| 281 | |
| 282 | \f |
| 283 | /* Code for dealing with Lisp access to the Unix command line */ |
| 284 | |
| 285 | static void |
| 286 | init_cmdargs (argc, argv, skip_args) |
| 287 | int argc; |
| 288 | char **argv; |
| 289 | int skip_args; |
| 290 | { |
| 291 | register int i; |
| 292 | Lisp_Object name, dir, tem; |
| 293 | int count = specpdl_ptr - specpdl; |
| 294 | Lisp_Object raw_name; |
| 295 | |
| 296 | initial_argv = argv; |
| 297 | initial_argc = argc; |
| 298 | |
| 299 | raw_name = build_string (argv[0]); |
| 300 | |
| 301 | /* Add /: to the front of the name |
| 302 | if it would otherwise be treated as magic. */ |
| 303 | tem = Ffind_file_name_handler (raw_name, Qt); |
| 304 | if (! NILP (tem)) |
| 305 | raw_name = concat2 (build_string ("/:"), raw_name); |
| 306 | |
| 307 | Vinvocation_name = Ffile_name_nondirectory (raw_name); |
| 308 | Vinvocation_directory = Ffile_name_directory (raw_name); |
| 309 | |
| 310 | /* If we got no directory in argv[0], search PATH to find where |
| 311 | Emacs actually came from. */ |
| 312 | if (NILP (Vinvocation_directory)) |
| 313 | { |
| 314 | Lisp_Object found; |
| 315 | int yes = openp (Vexec_path, Vinvocation_name, |
| 316 | EXEC_SUFFIXES, &found, 1); |
| 317 | if (yes == 1) |
| 318 | { |
| 319 | /* Add /: to the front of the name |
| 320 | if it would otherwise be treated as magic. */ |
| 321 | tem = Ffind_file_name_handler (found, Qt); |
| 322 | if (! NILP (tem)) |
| 323 | found = concat2 (build_string ("/:"), found); |
| 324 | Vinvocation_directory = Ffile_name_directory (found); |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | if (!NILP (Vinvocation_directory) |
| 329 | && NILP (Ffile_name_absolute_p (Vinvocation_directory))) |
| 330 | /* Emacs was started with relative path, like ./emacs. |
| 331 | Make it absolute. */ |
| 332 | Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil); |
| 333 | |
| 334 | Vinstallation_directory = Qnil; |
| 335 | |
| 336 | if (!NILP (Vinvocation_directory)) |
| 337 | { |
| 338 | dir = Vinvocation_directory; |
| 339 | name = Fexpand_file_name (Vinvocation_name, dir); |
| 340 | while (1) |
| 341 | { |
| 342 | Lisp_Object tem, lib_src_exists; |
| 343 | Lisp_Object etc_exists, info_exists; |
| 344 | |
| 345 | /* See if dir contains subdirs for use by Emacs. |
| 346 | Check for the ones that would exist in a build directory, |
| 347 | not including lisp and info. */ |
| 348 | tem = Fexpand_file_name (build_string ("lib-src"), dir); |
| 349 | lib_src_exists = Ffile_exists_p (tem); |
| 350 | |
| 351 | #ifdef MSDOS |
| 352 | /* MSDOS installations frequently remove lib-src, but we still |
| 353 | must set installation-directory, or else info won't find |
| 354 | its files (it uses the value of installation-directory). */ |
| 355 | tem = Fexpand_file_name (build_string ("info"), dir); |
| 356 | info_exists = Ffile_exists_p (tem); |
| 357 | #else |
| 358 | info_exists = Qnil; |
| 359 | #endif |
| 360 | |
| 361 | if (!NILP (lib_src_exists) || !NILP (info_exists)) |
| 362 | { |
| 363 | tem = Fexpand_file_name (build_string ("etc"), dir); |
| 364 | etc_exists = Ffile_exists_p (tem); |
| 365 | if (!NILP (etc_exists)) |
| 366 | { |
| 367 | Vinstallation_directory |
| 368 | = Ffile_name_as_directory (dir); |
| 369 | break; |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | /* See if dir's parent contains those subdirs. */ |
| 374 | tem = Fexpand_file_name (build_string ("../lib-src"), dir); |
| 375 | lib_src_exists = Ffile_exists_p (tem); |
| 376 | |
| 377 | |
| 378 | #ifdef MSDOS |
| 379 | /* See the MSDOS commentary above. */ |
| 380 | tem = Fexpand_file_name (build_string ("../info"), dir); |
| 381 | info_exists = Ffile_exists_p (tem); |
| 382 | #else |
| 383 | info_exists = Qnil; |
| 384 | #endif |
| 385 | |
| 386 | if (!NILP (lib_src_exists) || !NILP (info_exists)) |
| 387 | { |
| 388 | tem = Fexpand_file_name (build_string ("../etc"), dir); |
| 389 | etc_exists = Ffile_exists_p (tem); |
| 390 | if (!NILP (etc_exists)) |
| 391 | { |
| 392 | tem = Fexpand_file_name (build_string (".."), dir); |
| 393 | Vinstallation_directory |
| 394 | = Ffile_name_as_directory (tem); |
| 395 | break; |
| 396 | } |
| 397 | } |
| 398 | |
| 399 | /* If the Emacs executable is actually a link, |
| 400 | next try the dir that the link points into. */ |
| 401 | tem = Ffile_symlink_p (name); |
| 402 | if (!NILP (tem)) |
| 403 | { |
| 404 | name = Fexpand_file_name (tem, dir); |
| 405 | dir = Ffile_name_directory (name); |
| 406 | } |
| 407 | else |
| 408 | break; |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | Vcommand_line_args = Qnil; |
| 413 | |
| 414 | for (i = argc - 1; i >= 0; i--) |
| 415 | { |
| 416 | if (i == 0 || i > skip_args) |
| 417 | Vcommand_line_args |
| 418 | = Fcons (build_string (argv[i]), Vcommand_line_args); |
| 419 | } |
| 420 | |
| 421 | unbind_to (count, Qnil); |
| 422 | } |
| 423 | |
| 424 | DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0, |
| 425 | "Return the program name that was used to run Emacs.\n\ |
| 426 | Any directory names are omitted.") |
| 427 | () |
| 428 | { |
| 429 | return Fcopy_sequence (Vinvocation_name); |
| 430 | } |
| 431 | |
| 432 | DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory, |
| 433 | 0, 0, 0, |
| 434 | "Return the directory name in which the Emacs executable was located") |
| 435 | () |
| 436 | { |
| 437 | return Fcopy_sequence (Vinvocation_directory); |
| 438 | } |
| 439 | |
| 440 | \f |
| 441 | #ifdef VMS |
| 442 | #ifdef LINK_CRTL_SHARE |
| 443 | #ifdef SHARABLE_LIB_BUG |
| 444 | extern noshare char **environ; |
| 445 | #endif /* SHARABLE_LIB_BUG */ |
| 446 | #endif /* LINK_CRTL_SHARE */ |
| 447 | #endif /* VMS */ |
| 448 | |
| 449 | #ifdef HAVE_TZSET |
| 450 | /* A valid but unlikely value for the TZ environment value. |
| 451 | It is OK (though a bit slower) if the user actually chooses this value. */ |
| 452 | static char dump_tz[] = "UtC0"; |
| 453 | #endif |
| 454 | |
| 455 | #ifndef ORDINARY_LINK |
| 456 | /* We don't include crtbegin.o and crtend.o in the link, |
| 457 | so these functions and variables might be missed. |
| 458 | Provide dummy definitions to avoid error. |
| 459 | (We don't have any real constructors or destructors.) */ |
| 460 | #ifdef __GNUC__ |
| 461 | #ifndef GCC_CTORS_IN_LIBC |
| 462 | void __do_global_ctors () |
| 463 | {} |
| 464 | void __do_global_ctors_aux () |
| 465 | {} |
| 466 | void __do_global_dtors () |
| 467 | {} |
| 468 | /* Linux has a bug in its library; avoid an error. */ |
| 469 | #ifndef LINUX |
| 470 | char * __CTOR_LIST__[2] = { (char *) (-1), 0 }; |
| 471 | #endif |
| 472 | char * __DTOR_LIST__[2] = { (char *) (-1), 0 }; |
| 473 | #endif /* GCC_CTORS_IN_LIBC */ |
| 474 | void __main () |
| 475 | {} |
| 476 | #endif /* __GNUC__ */ |
| 477 | #endif /* ORDINARY_LINK */ |
| 478 | |
| 479 | /* Test whether the next argument in ARGV matches SSTR or a prefix of |
| 480 | LSTR (at least MINLEN characters). If so, then if VALPTR is non-null |
| 481 | (the argument is supposed to have a value) store in *VALPTR either |
| 482 | the next argument or the portion of this one after the equal sign. |
| 483 | ARGV is read starting at position *SKIPPTR; this index is advanced |
| 484 | by the number of arguments used. |
| 485 | |
| 486 | Too bad we can't just use getopt for all of this, but we don't have |
| 487 | enough information to do it right. */ |
| 488 | |
| 489 | static int |
| 490 | argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr) |
| 491 | char **argv; |
| 492 | int argc; |
| 493 | char *sstr; |
| 494 | char *lstr; |
| 495 | int minlen; |
| 496 | char **valptr; |
| 497 | int *skipptr; |
| 498 | { |
| 499 | char *p; |
| 500 | int arglen; |
| 501 | char *arg; |
| 502 | |
| 503 | /* Don't access argv[argc]; give up in advance. */ |
| 504 | if (argc <= *skipptr + 1) |
| 505 | return 0; |
| 506 | |
| 507 | arg = argv[*skipptr+1]; |
| 508 | if (arg == NULL) |
| 509 | return 0; |
| 510 | if (strcmp (arg, sstr) == 0) |
| 511 | { |
| 512 | if (valptr != NULL) |
| 513 | { |
| 514 | *valptr = argv[*skipptr+2]; |
| 515 | *skipptr += 2; |
| 516 | } |
| 517 | else |
| 518 | *skipptr += 1; |
| 519 | return 1; |
| 520 | } |
| 521 | arglen = (valptr != NULL && (p = index (arg, '=')) != NULL |
| 522 | ? p - arg : strlen (arg)); |
| 523 | if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0) |
| 524 | return 0; |
| 525 | else if (valptr == NULL) |
| 526 | { |
| 527 | *skipptr += 1; |
| 528 | return 1; |
| 529 | } |
| 530 | else if (p != NULL) |
| 531 | { |
| 532 | *valptr = p+1; |
| 533 | *skipptr += 1; |
| 534 | return 1; |
| 535 | } |
| 536 | else if (argv[*skipptr+2] != NULL) |
| 537 | { |
| 538 | *valptr = argv[*skipptr+2]; |
| 539 | *skipptr += 2; |
| 540 | return 1; |
| 541 | } |
| 542 | else |
| 543 | { |
| 544 | return 0; |
| 545 | } |
| 546 | } |
| 547 | |
| 548 | #ifdef DOUG_LEA_MALLOC |
| 549 | |
| 550 | /* malloc can be invoked even before main (e.g. by the dynamic |
| 551 | linker), so the dumped malloc state must be restored as early as |
| 552 | possible using this special hook. */ |
| 553 | |
| 554 | static void |
| 555 | malloc_initialize_hook () |
| 556 | { |
| 557 | extern char **environ; |
| 558 | |
| 559 | if (initialized) |
| 560 | { |
| 561 | if (!malloc_using_checking) |
| 562 | /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be |
| 563 | ignored if the heap to be restored was constructed without |
| 564 | malloc checking. Can't use unsetenv, since that calls malloc. */ |
| 565 | { |
| 566 | char **p; |
| 567 | |
| 568 | for (p = environ; *p; p++) |
| 569 | if (strncmp (*p, "MALLOC_CHECK_=", 14) == 0) |
| 570 | { |
| 571 | do |
| 572 | *p = p[1]; |
| 573 | while (*++p); |
| 574 | break; |
| 575 | } |
| 576 | } |
| 577 | |
| 578 | malloc_set_state (malloc_state_ptr); |
| 579 | free (malloc_state_ptr); |
| 580 | } |
| 581 | else |
| 582 | malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL; |
| 583 | } |
| 584 | |
| 585 | void (*__malloc_initialize_hook) () = malloc_initialize_hook; |
| 586 | |
| 587 | #endif /* DOUG_LEA_MALLOC */ |
| 588 | |
| 589 | /* ARGSUSED */ |
| 590 | int |
| 591 | main (argc, argv, envp) |
| 592 | int argc; |
| 593 | char **argv; |
| 594 | char **envp; |
| 595 | { |
| 596 | char stack_bottom_variable; |
| 597 | int skip_args = 0; |
| 598 | extern int errno; |
| 599 | extern int sys_nerr; |
| 600 | #ifdef HAVE_SETRLIMIT |
| 601 | struct rlimit rlim; |
| 602 | #endif |
| 603 | int no_loadup = 0; |
| 604 | |
| 605 | #ifdef LINUX_SBRK_BUG |
| 606 | __sbrk (1); |
| 607 | #endif |
| 608 | |
| 609 | #ifdef RUN_TIME_REMAP |
| 610 | if (initialized) |
| 611 | run_time_remap (argv[0]); |
| 612 | #endif |
| 613 | |
| 614 | sort_args (argc, argv); |
| 615 | argc = 0; |
| 616 | while (argv[argc]) argc++; |
| 617 | |
| 618 | if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args) |
| 619 | /* We don't know the version number unless this is a dumped Emacs. |
| 620 | So ignore --version otherwise. */ |
| 621 | && initialized) |
| 622 | { |
| 623 | Lisp_Object tem; |
| 624 | tem = Fsymbol_value (intern ("emacs-version")); |
| 625 | if (!STRINGP (tem)) |
| 626 | { |
| 627 | fprintf (stderr, "Invalid value of `emacs-version'\n"); |
| 628 | exit (1); |
| 629 | } |
| 630 | else |
| 631 | { |
| 632 | printf ("GNU Emacs %s\n", XSTRING (tem)->data); |
| 633 | printf ("Copyright (C) 1999 Free Software Foundation, Inc.\n"); |
| 634 | printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n"); |
| 635 | printf ("You may redistribute copies of Emacs\n"); |
| 636 | printf ("under the terms of the GNU General Public License.\n"); |
| 637 | printf ("For more information about these matters, "); |
| 638 | printf ("see the file named COPYING.\n"); |
| 639 | exit (0); |
| 640 | } |
| 641 | } |
| 642 | |
| 643 | /* Map in shared memory, if we are using that. */ |
| 644 | #ifdef HAVE_SHM |
| 645 | if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args)) |
| 646 | { |
| 647 | map_in_data (0); |
| 648 | /* The shared memory was just restored, which clobbered this. */ |
| 649 | skip_args = 1; |
| 650 | } |
| 651 | else |
| 652 | { |
| 653 | map_in_data (1); |
| 654 | /* The shared memory was just restored, which clobbered this. */ |
| 655 | skip_args = 0; |
| 656 | } |
| 657 | #endif |
| 658 | |
| 659 | #ifdef NeXT |
| 660 | { |
| 661 | extern int malloc_cookie; |
| 662 | /* This helps out unexnext.c. */ |
| 663 | if (initialized) |
| 664 | if (malloc_jumpstart (malloc_cookie) != 0) |
| 665 | printf ("malloc jumpstart failed!\n"); |
| 666 | } |
| 667 | #endif /* NeXT */ |
| 668 | |
| 669 | #ifdef VMS |
| 670 | /* If -map specified, map the data file in */ |
| 671 | { |
| 672 | char *file; |
| 673 | if (argmatch (argv, argc, "-map", "--map-data", 3, &mapin_file, &skip_args)) |
| 674 | mapin_data (file); |
| 675 | } |
| 676 | |
| 677 | #ifdef LINK_CRTL_SHARE |
| 678 | #ifdef SHARABLE_LIB_BUG |
| 679 | /* Bletcherous shared libraries! */ |
| 680 | if (!stdin) |
| 681 | stdin = fdopen (0, "r"); |
| 682 | if (!stdout) |
| 683 | stdout = fdopen (1, "w"); |
| 684 | if (!stderr) |
| 685 | stderr = fdopen (2, "w"); |
| 686 | if (!environ) |
| 687 | environ = envp; |
| 688 | #endif /* SHARABLE_LIB_BUG */ |
| 689 | #endif /* LINK_CRTL_SHARE */ |
| 690 | #endif /* VMS */ |
| 691 | |
| 692 | #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK) |
| 693 | /* Extend the stack space available. |
| 694 | Don't do that if dumping, since some systems (e.g. DJGPP) |
| 695 | might define a smaller stack limit at that time. */ |
| 696 | if (1 |
| 697 | #ifndef CANNOT_DUMP |
| 698 | && (!noninteractive || initialized) |
| 699 | #endif |
| 700 | && !getrlimit (RLIMIT_STACK, &rlim)) |
| 701 | { |
| 702 | long newlim; |
| 703 | extern int re_max_failures; |
| 704 | /* Approximate the amount regex.c needs per unit of re_max_failures. */ |
| 705 | int ratio = 20 * sizeof (char *); |
| 706 | /* Then add 33% to cover the size of the smaller stacks that regex.c |
| 707 | successively allocates and discards, on its way to the maximum. */ |
| 708 | ratio += ratio / 3; |
| 709 | /* Add in some extra to cover |
| 710 | what we're likely to use for other reasons. */ |
| 711 | newlim = re_max_failures * ratio + 200000; |
| 712 | #ifdef __NetBSD__ |
| 713 | /* NetBSD (at least NetBSD 1.2G and former) has a bug in its |
| 714 | stack allocation routine for new process that the allocation |
| 715 | fails if stack limit is not on page boundary. So, round up the |
| 716 | new limit to page boundary. */ |
| 717 | newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize(); |
| 718 | #endif |
| 719 | if (newlim > rlim.rlim_max) |
| 720 | { |
| 721 | newlim = rlim.rlim_max; |
| 722 | /* Don't let regex.c overflow the stack we have. */ |
| 723 | re_max_failures = (newlim - 200000) / ratio; |
| 724 | } |
| 725 | if (rlim.rlim_cur < newlim) |
| 726 | rlim.rlim_cur = newlim; |
| 727 | |
| 728 | setrlimit (RLIMIT_STACK, &rlim); |
| 729 | } |
| 730 | #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */ |
| 731 | |
| 732 | /* Record (approximately) where the stack begins. */ |
| 733 | stack_bottom = &stack_bottom_variable; |
| 734 | |
| 735 | #ifdef USG_SHARED_LIBRARIES |
| 736 | if (bss_end) |
| 737 | brk ((void *)bss_end); |
| 738 | #endif |
| 739 | |
| 740 | clearerr (stdin); |
| 741 | |
| 742 | #ifndef SYSTEM_MALLOC |
| 743 | /* Arrange to get warning messages as memory fills up. */ |
| 744 | memory_warnings (0, malloc_warning); |
| 745 | |
| 746 | /* Call malloc at least once, to run the initial __malloc_hook. |
| 747 | Also call realloc and free for consistency. */ |
| 748 | free (realloc (malloc (4), 4)); |
| 749 | |
| 750 | /* Arrange to disable interrupt input inside malloc etc. */ |
| 751 | uninterrupt_malloc (); |
| 752 | #endif /* not SYSTEM_MALLOC */ |
| 753 | |
| 754 | #ifdef MSDOS |
| 755 | /* We do all file input/output as binary files. When we need to translate |
| 756 | newlines, we do that manually. */ |
| 757 | _fmode = O_BINARY; |
| 758 | |
| 759 | #if __DJGPP__ >= 2 |
| 760 | if (!isatty (fileno (stdin))) |
| 761 | setmode (fileno (stdin), O_BINARY); |
| 762 | if (!isatty (fileno (stdout))) |
| 763 | { |
| 764 | fflush (stdout); |
| 765 | setmode (fileno (stdout), O_BINARY); |
| 766 | } |
| 767 | #else /* not __DJGPP__ >= 2 */ |
| 768 | (stdin)->_flag &= ~_IOTEXT; |
| 769 | (stdout)->_flag &= ~_IOTEXT; |
| 770 | (stderr)->_flag &= ~_IOTEXT; |
| 771 | #endif /* not __DJGPP__ >= 2 */ |
| 772 | #endif /* MSDOS */ |
| 773 | |
| 774 | #ifdef SET_EMACS_PRIORITY |
| 775 | if (emacs_priority) |
| 776 | nice (emacs_priority); |
| 777 | setuid (getuid ()); |
| 778 | #endif /* SET_EMACS_PRIORITY */ |
| 779 | |
| 780 | #ifdef EXTRA_INITIALIZE |
| 781 | EXTRA_INITIALIZE; |
| 782 | #endif |
| 783 | |
| 784 | inhibit_window_system = 0; |
| 785 | |
| 786 | /* Handle the -t switch, which specifies filename to use as terminal */ |
| 787 | while (1) |
| 788 | { |
| 789 | char *term; |
| 790 | if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args)) |
| 791 | { |
| 792 | int result; |
| 793 | close (0); |
| 794 | close (1); |
| 795 | result = open (term, O_RDWR, 2 ); |
| 796 | if (result < 0) |
| 797 | { |
| 798 | char *errstring = strerror (errno); |
| 799 | fprintf (stderr, "emacs: %s: %s\n", term, errstring); |
| 800 | exit (1); |
| 801 | } |
| 802 | dup (0); |
| 803 | if (! isatty (0)) |
| 804 | { |
| 805 | fprintf (stderr, "emacs: %s: not a tty\n", term); |
| 806 | exit (1); |
| 807 | } |
| 808 | fprintf (stderr, "Using %s\n", term); |
| 809 | #ifdef HAVE_WINDOW_SYSTEM |
| 810 | inhibit_window_system = 1; /* -t => -nw */ |
| 811 | #endif |
| 812 | } |
| 813 | else |
| 814 | break; |
| 815 | } |
| 816 | |
| 817 | if (argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args)) |
| 818 | inhibit_window_system = 1; |
| 819 | |
| 820 | /* Handle the -batch switch, which means don't do interactive display. */ |
| 821 | noninteractive = 0; |
| 822 | if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args)) |
| 823 | noninteractive = 1; |
| 824 | |
| 825 | /* Handle the --help option, which gives a usage message.. */ |
| 826 | if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args)) |
| 827 | { |
| 828 | printf ("\ |
| 829 | Usage: %s [--batch] [-t term] [--terminal term]\n\ |
| 830 | [-d display] [--display display] [-nw] [--no-windows]\n\ |
| 831 | [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\ |
| 832 | [--unibyte] [--multibyte] [--version] [--no-site-file]\n\ |
| 833 | [-f func] [--funcall func] [-l file] [--load file] [--eval expr]\n\ |
| 834 | [--insert file] [+linenum] file-to-visit [--kill]\n\ |
| 835 | Report bugs to bug-gnu-emacs@gnu.org. First, please see\n\ |
| 836 | the Bugs section of the Emacs manual or the file BUGS.\n", argv[0]); |
| 837 | exit (0); |
| 838 | } |
| 839 | |
| 840 | if (! noninteractive) |
| 841 | { |
| 842 | #ifdef BSD_PGRPS |
| 843 | if (initialized) |
| 844 | { |
| 845 | inherited_pgroup = EMACS_GETPGRP (0); |
| 846 | setpgrp (0, getpid ()); |
| 847 | } |
| 848 | #else |
| 849 | #if defined (USG5) && defined (INTERRUPT_INPUT) |
| 850 | setpgrp (); |
| 851 | #endif |
| 852 | #endif |
| 853 | } |
| 854 | |
| 855 | #ifdef POSIX_SIGNALS |
| 856 | init_signals (); |
| 857 | #endif |
| 858 | |
| 859 | /* Don't catch SIGHUP if dumping. */ |
| 860 | if (1 |
| 861 | #ifndef CANNOT_DUMP |
| 862 | && initialized |
| 863 | #endif |
| 864 | ) |
| 865 | { |
| 866 | sigblock (sigmask (SIGHUP)); |
| 867 | /* In --batch mode, don't catch SIGHUP if already ignored. |
| 868 | That makes nohup work. */ |
| 869 | if (! noninteractive |
| 870 | || signal (SIGHUP, SIG_IGN) != SIG_IGN) |
| 871 | signal (SIGHUP, fatal_error_signal); |
| 872 | sigunblock (sigmask (SIGHUP)); |
| 873 | } |
| 874 | |
| 875 | if ( |
| 876 | #ifndef CANNOT_DUMP |
| 877 | ! noninteractive || initialized |
| 878 | #else |
| 879 | 1 |
| 880 | #endif |
| 881 | ) |
| 882 | { |
| 883 | /* Don't catch these signals in batch mode if dumping. |
| 884 | On some machines, this sets static data that would make |
| 885 | signal fail to work right when the dumped Emacs is run. */ |
| 886 | signal (SIGQUIT, fatal_error_signal); |
| 887 | signal (SIGILL, fatal_error_signal); |
| 888 | signal (SIGTRAP, fatal_error_signal); |
| 889 | #ifdef SIGUSR1 |
| 890 | signal (SIGUSR1, handle_USR1_signal); |
| 891 | #ifdef SIGUSR2 |
| 892 | signal (SIGUSR2, handle_USR2_signal); |
| 893 | #endif |
| 894 | #endif |
| 895 | #ifdef SIGABRT |
| 896 | signal (SIGABRT, fatal_error_signal); |
| 897 | #endif |
| 898 | #ifdef SIGHWE |
| 899 | signal (SIGHWE, fatal_error_signal); |
| 900 | #endif |
| 901 | #ifdef SIGPRE |
| 902 | signal (SIGPRE, fatal_error_signal); |
| 903 | #endif |
| 904 | #ifdef SIGORE |
| 905 | signal (SIGORE, fatal_error_signal); |
| 906 | #endif |
| 907 | #ifdef SIGUME |
| 908 | signal (SIGUME, fatal_error_signal); |
| 909 | #endif |
| 910 | #ifdef SIGDLK |
| 911 | signal (SIGDLK, fatal_error_signal); |
| 912 | #endif |
| 913 | #ifdef SIGCPULIM |
| 914 | signal (SIGCPULIM, fatal_error_signal); |
| 915 | #endif |
| 916 | #ifdef SIGIOT |
| 917 | /* This is missing on some systems - OS/2, for example. */ |
| 918 | signal (SIGIOT, fatal_error_signal); |
| 919 | #endif |
| 920 | #ifdef SIGEMT |
| 921 | signal (SIGEMT, fatal_error_signal); |
| 922 | #endif |
| 923 | signal (SIGFPE, fatal_error_signal); |
| 924 | #ifdef SIGBUS |
| 925 | signal (SIGBUS, fatal_error_signal); |
| 926 | #endif |
| 927 | signal (SIGSEGV, fatal_error_signal); |
| 928 | #ifdef SIGSYS |
| 929 | signal (SIGSYS, fatal_error_signal); |
| 930 | #endif |
| 931 | signal (SIGTERM, fatal_error_signal); |
| 932 | #ifdef SIGXCPU |
| 933 | signal (SIGXCPU, fatal_error_signal); |
| 934 | #endif |
| 935 | #ifdef SIGXFSZ |
| 936 | signal (SIGXFSZ, fatal_error_signal); |
| 937 | #endif /* SIGXFSZ */ |
| 938 | |
| 939 | #ifdef SIGDANGER |
| 940 | /* This just means available memory is getting low. */ |
| 941 | signal (SIGDANGER, memory_warning_signal); |
| 942 | #endif |
| 943 | |
| 944 | #ifdef AIX |
| 945 | /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */ |
| 946 | signal (SIGXCPU, fatal_error_signal); |
| 947 | #ifndef _I386 |
| 948 | signal (SIGIOINT, fatal_error_signal); |
| 949 | #endif |
| 950 | signal (SIGGRANT, fatal_error_signal); |
| 951 | signal (SIGRETRACT, fatal_error_signal); |
| 952 | signal (SIGSOUND, fatal_error_signal); |
| 953 | signal (SIGMSG, fatal_error_signal); |
| 954 | #endif /* AIX */ |
| 955 | } |
| 956 | |
| 957 | noninteractive1 = noninteractive; |
| 958 | |
| 959 | /* Perform basic initializations (not merely interning symbols) */ |
| 960 | |
| 961 | if (!initialized) |
| 962 | { |
| 963 | init_alloc_once (); |
| 964 | init_obarray (); |
| 965 | init_eval_once (); |
| 966 | init_charset_once (); |
| 967 | init_coding_once (); |
| 968 | init_syntax_once (); /* Create standard syntax table. */ |
| 969 | init_category_once (); /* Create standard category table. */ |
| 970 | /* Must be done before init_buffer */ |
| 971 | init_casetab_once (); |
| 972 | init_buffer_once (); /* Create buffer table and some buffers */ |
| 973 | init_minibuf_once (); /* Create list of minibuffers */ |
| 974 | /* Must precede init_window_once */ |
| 975 | |
| 976 | /* Call syms_of_xfaces before init_window_once because that |
| 977 | function creates Vterminal_frame. Termcap frames now use |
| 978 | faces, and the face implementation uses some symbols as |
| 979 | face names. */ |
| 980 | #ifndef HAVE_NTGUI |
| 981 | syms_of_xfaces (); |
| 982 | #endif |
| 983 | |
| 984 | init_window_once (); /* Init the window system */ |
| 985 | init_fileio_once (); /* Must precede any path manipulation. */ |
| 986 | } |
| 987 | |
| 988 | init_alloc (); |
| 989 | init_eval (); |
| 990 | init_coding (); |
| 991 | init_data (); |
| 992 | #ifdef CLASH_DETECTION |
| 993 | init_filelock ();; |
| 994 | #endif |
| 995 | running_asynch_code = 0; |
| 996 | |
| 997 | /* Handle --unibyte and the EMACS_UNIBYTE envvar, |
| 998 | but not while dumping. */ |
| 999 | if ( |
| 1000 | #ifndef CANNOT_DUMP |
| 1001 | ! noninteractive || initialized |
| 1002 | #else |
| 1003 | 1 |
| 1004 | #endif |
| 1005 | ) |
| 1006 | { |
| 1007 | int inhibit_unibyte = 0; |
| 1008 | |
| 1009 | /* --multibyte overrides EMACS_UNIBYTE. */ |
| 1010 | if (argmatch (argv, argc, "-no-unibyte", "--no-unibyte", 4, NULL, &skip_args) |
| 1011 | || argmatch (argv, argc, "-multibyte", "--multibyte", 4, NULL, &skip_args)) |
| 1012 | inhibit_unibyte = 1; |
| 1013 | |
| 1014 | /* --unibyte requests that we set up to do everything with single-byte |
| 1015 | buffers and strings. We need to handle this before calling |
| 1016 | init_lread, init_editfns and other places that generate Lisp strings |
| 1017 | from text in the environment. */ |
| 1018 | /* Actually this shouldn't be needed as of 20.4 in a generally |
| 1019 | unibyte environment. As handa says, environment values |
| 1020 | aren't now decoded; also existing buffers are now made |
| 1021 | unibyte during startup if .emacs sets unibyte. Tested with |
| 1022 | 8-bit data in environment variables and /etc/passwd, setting |
| 1023 | unibyte and Latin-1 in .emacs. -- Dave Love */ |
| 1024 | if (argmatch (argv, argc, "-unibyte", "--unibyte", 4, NULL, &skip_args) |
| 1025 | || argmatch (argv, argc, "-no-multibyte", "--no-multibyte", 4, NULL, &skip_args) |
| 1026 | || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte)) |
| 1027 | { |
| 1028 | Lisp_Object old_log_max; |
| 1029 | Lisp_Object symbol, tail; |
| 1030 | |
| 1031 | symbol = intern ("default-enable-multibyte-characters"); |
| 1032 | Fset (symbol, Qnil); |
| 1033 | |
| 1034 | if (initialized) |
| 1035 | { |
| 1036 | /* Erase pre-dump messages in *Messages* now so no abort. */ |
| 1037 | old_log_max = Vmessage_log_max; |
| 1038 | XSETFASTINT (Vmessage_log_max, 0); |
| 1039 | message_dolog ("", 0, 1, 0); |
| 1040 | Vmessage_log_max = old_log_max; |
| 1041 | } |
| 1042 | |
| 1043 | for (tail = Vbuffer_alist; CONSP (tail); |
| 1044 | tail = XCONS (tail)->cdr) |
| 1045 | { |
| 1046 | Lisp_Object buffer; |
| 1047 | |
| 1048 | buffer = Fcdr (XCONS (tail)->car); |
| 1049 | /* Verify that all buffers are empty now, as they |
| 1050 | ought to be. */ |
| 1051 | if (BUF_Z (XBUFFER (buffer)) > BUF_BEG (XBUFFER (buffer))) |
| 1052 | abort (); |
| 1053 | /* It is safe to do this crudely in an empty buffer. */ |
| 1054 | XBUFFER (buffer)->enable_multibyte_characters = Qnil; |
| 1055 | } |
| 1056 | } |
| 1057 | } |
| 1058 | |
| 1059 | no_loadup |
| 1060 | = !argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args); |
| 1061 | |
| 1062 | |
| 1063 | #ifdef HAVE_X_WINDOWS |
| 1064 | /* Stupid kludge to catch command-line display spec. We can't |
| 1065 | handle this argument entirely in window system dependent code |
| 1066 | because we don't even know which window system dependent code |
| 1067 | to run until we've recognized this argument. */ |
| 1068 | { |
| 1069 | char *displayname = 0; |
| 1070 | int i; |
| 1071 | int count_before = skip_args; |
| 1072 | |
| 1073 | /* Skip any number of -d options, but only use the last one. */ |
| 1074 | while (1) |
| 1075 | { |
| 1076 | int count_before_this = skip_args; |
| 1077 | |
| 1078 | if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args)) |
| 1079 | display_arg = 1; |
| 1080 | else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args)) |
| 1081 | display_arg = 1; |
| 1082 | else |
| 1083 | break; |
| 1084 | |
| 1085 | count_before = count_before_this; |
| 1086 | } |
| 1087 | |
| 1088 | /* If we have the form --display=NAME, |
| 1089 | convert it into -d name. |
| 1090 | This requires inserting a new element into argv. */ |
| 1091 | if (displayname != 0 && skip_args - count_before == 1) |
| 1092 | { |
| 1093 | char **new = (char **) xmalloc (sizeof (char *) * (argc + 2)); |
| 1094 | int j; |
| 1095 | |
| 1096 | for (j = 0; j < count_before + 1; j++) |
| 1097 | new[j] = argv[j]; |
| 1098 | new[count_before + 1] = "-d"; |
| 1099 | new[count_before + 2] = displayname; |
| 1100 | for (j = count_before + 2; j <argc; j++) |
| 1101 | new[j + 1] = argv[j]; |
| 1102 | argv = new; |
| 1103 | argc++; |
| 1104 | } |
| 1105 | /* Change --display to -d, when its arg is separate. */ |
| 1106 | else if (displayname != 0 && skip_args > count_before |
| 1107 | && argv[count_before + 1][1] == '-') |
| 1108 | argv[count_before + 1] = "-d"; |
| 1109 | |
| 1110 | /* Don't actually discard this arg. */ |
| 1111 | skip_args = count_before; |
| 1112 | } |
| 1113 | #endif |
| 1114 | |
| 1115 | /* argmatch must not be used after here, |
| 1116 | except when bulding temacs |
| 1117 | because the -d argument has not been skipped in skip_args. */ |
| 1118 | |
| 1119 | #ifdef MSDOS |
| 1120 | /* Call early 'cause init_environment needs it. */ |
| 1121 | init_dosfns (); |
| 1122 | /* Set defaults for several environment variables. */ |
| 1123 | if (initialized) |
| 1124 | init_environment (argc, argv, skip_args); |
| 1125 | else |
| 1126 | tzset (); |
| 1127 | #endif /* MSDOS */ |
| 1128 | |
| 1129 | #ifdef WINDOWSNT |
| 1130 | /* Initialize environment from registry settings. */ |
| 1131 | init_environment (argv); |
| 1132 | init_ntproc (); /* must precede init_editfns */ |
| 1133 | #endif |
| 1134 | |
| 1135 | /* egetenv is a pretty low-level facility, which may get called in |
| 1136 | many circumstances; it seems flimsy to put off initializing it |
| 1137 | until calling init_callproc. */ |
| 1138 | set_process_environment (); |
| 1139 | /* AIX crashes are reported in system versions 3.2.3 and 3.2.4 |
| 1140 | if this is not done. Do it after set_process_environment so that we |
| 1141 | don't pollute Vprocess_environment. */ |
| 1142 | #ifdef AIX |
| 1143 | putenv ("LANG=C"); |
| 1144 | #endif |
| 1145 | |
| 1146 | init_buffer (); /* Init default directory of main buffer */ |
| 1147 | |
| 1148 | init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */ |
| 1149 | init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */ |
| 1150 | |
| 1151 | if (initialized) |
| 1152 | { |
| 1153 | /* Erase any pre-dump messages in the message log, to avoid confusion */ |
| 1154 | Lisp_Object old_log_max; |
| 1155 | old_log_max = Vmessage_log_max; |
| 1156 | XSETFASTINT (Vmessage_log_max, 0); |
| 1157 | message_dolog ("", 0, 1, 0); |
| 1158 | Vmessage_log_max = old_log_max; |
| 1159 | } |
| 1160 | |
| 1161 | init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */ |
| 1162 | init_lread (); |
| 1163 | |
| 1164 | /* Intern the names of all standard functions and variables; |
| 1165 | define standard keys. */ |
| 1166 | |
| 1167 | if (!initialized) |
| 1168 | { |
| 1169 | /* The basic levels of Lisp must come first */ |
| 1170 | /* And data must come first of all |
| 1171 | for the sake of symbols like error-message */ |
| 1172 | syms_of_data (); |
| 1173 | syms_of_alloc (); |
| 1174 | syms_of_lread (); |
| 1175 | syms_of_print (); |
| 1176 | syms_of_eval (); |
| 1177 | syms_of_fns (); |
| 1178 | syms_of_floatfns (); |
| 1179 | |
| 1180 | syms_of_abbrev (); |
| 1181 | syms_of_buffer (); |
| 1182 | syms_of_bytecode (); |
| 1183 | syms_of_callint (); |
| 1184 | syms_of_casefiddle (); |
| 1185 | syms_of_casetab (); |
| 1186 | syms_of_callproc (); |
| 1187 | syms_of_category (); |
| 1188 | syms_of_ccl (); |
| 1189 | syms_of_charset (); |
| 1190 | syms_of_cmds (); |
| 1191 | #ifndef NO_DIR_LIBRARY |
| 1192 | syms_of_dired (); |
| 1193 | #endif /* not NO_DIR_LIBRARY */ |
| 1194 | syms_of_display (); |
| 1195 | syms_of_doc (); |
| 1196 | syms_of_editfns (); |
| 1197 | syms_of_emacs (); |
| 1198 | syms_of_fileio (); |
| 1199 | syms_of_coding (); /* This should be after syms_of_fileio. */ |
| 1200 | #ifdef CLASH_DETECTION |
| 1201 | syms_of_filelock (); |
| 1202 | #endif /* CLASH_DETECTION */ |
| 1203 | syms_of_indent (); |
| 1204 | syms_of_insdel (); |
| 1205 | syms_of_keyboard (); |
| 1206 | syms_of_keymap (); |
| 1207 | syms_of_macros (); |
| 1208 | syms_of_marker (); |
| 1209 | syms_of_minibuf (); |
| 1210 | syms_of_mocklisp (); |
| 1211 | syms_of_process (); |
| 1212 | syms_of_search (); |
| 1213 | syms_of_frame (); |
| 1214 | syms_of_syntax (); |
| 1215 | syms_of_term (); |
| 1216 | syms_of_undo (); |
| 1217 | #ifdef HAVE_SOUND |
| 1218 | syms_of_sound (); |
| 1219 | #endif |
| 1220 | |
| 1221 | /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */ |
| 1222 | syms_of_textprop (); |
| 1223 | #ifdef VMS |
| 1224 | syms_of_vmsproc (); |
| 1225 | #endif /* VMS */ |
| 1226 | #ifdef WINDOWSNT |
| 1227 | syms_of_ntproc (); |
| 1228 | #endif /* WINDOWSNT */ |
| 1229 | syms_of_window (); |
| 1230 | syms_of_xdisp (); |
| 1231 | #ifdef HAVE_X_WINDOWS |
| 1232 | syms_of_xterm (); |
| 1233 | syms_of_xfns (); |
| 1234 | syms_of_fontset (); |
| 1235 | #ifdef HAVE_X11 |
| 1236 | syms_of_xselect (); |
| 1237 | #endif |
| 1238 | #endif /* HAVE_X_WINDOWS */ |
| 1239 | |
| 1240 | #ifndef HAVE_NTGUI |
| 1241 | syms_of_xmenu (); |
| 1242 | #endif |
| 1243 | |
| 1244 | #ifdef HAVE_NTGUI |
| 1245 | syms_of_w32term (); |
| 1246 | syms_of_w32fns (); |
| 1247 | syms_of_w32faces (); |
| 1248 | syms_of_w32select (); |
| 1249 | syms_of_w32menu (); |
| 1250 | syms_of_fontset (); |
| 1251 | #endif /* HAVE_NTGUI */ |
| 1252 | |
| 1253 | #ifdef SYMS_SYSTEM |
| 1254 | SYMS_SYSTEM; |
| 1255 | #endif |
| 1256 | |
| 1257 | #ifdef SYMS_MACHINE |
| 1258 | SYMS_MACHINE; |
| 1259 | #endif |
| 1260 | |
| 1261 | keys_of_casefiddle (); |
| 1262 | keys_of_cmds (); |
| 1263 | keys_of_buffer (); |
| 1264 | keys_of_keyboard (); |
| 1265 | keys_of_keymap (); |
| 1266 | keys_of_macros (); |
| 1267 | keys_of_minibuf (); |
| 1268 | keys_of_window (); |
| 1269 | keys_of_frame (); |
| 1270 | } |
| 1271 | |
| 1272 | if (!noninteractive) |
| 1273 | { |
| 1274 | #ifdef VMS |
| 1275 | init_vms_input ();/* init_display calls get_frame_size, that needs this */ |
| 1276 | #endif /* VMS */ |
| 1277 | init_display (); /* Determine terminal type. init_sys_modes uses results */ |
| 1278 | } |
| 1279 | init_keyboard (); /* This too must precede init_sys_modes */ |
| 1280 | #ifdef VMS |
| 1281 | init_vmsproc (); /* And this too. */ |
| 1282 | #endif /* VMS */ |
| 1283 | init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */ |
| 1284 | #ifdef HAVE_X_WINDOWS |
| 1285 | init_xfns (); |
| 1286 | #endif /* HAVE_X_WINDOWS */ |
| 1287 | init_fns (); |
| 1288 | init_xdisp (); |
| 1289 | init_macros (); |
| 1290 | init_editfns (); |
| 1291 | #ifdef LISP_FLOAT_TYPE |
| 1292 | init_floatfns (); |
| 1293 | #endif |
| 1294 | #ifdef VMS |
| 1295 | init_vmsfns (); |
| 1296 | #endif /* VMS */ |
| 1297 | init_process (); |
| 1298 | #ifdef HAVE_SOUND |
| 1299 | init_sound (); |
| 1300 | #endif |
| 1301 | |
| 1302 | if (!initialized) |
| 1303 | { |
| 1304 | char *file; |
| 1305 | /* Handle -l loadup, args passed by Makefile. */ |
| 1306 | if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args)) |
| 1307 | Vtop_level = Fcons (intern ("load"), |
| 1308 | Fcons (build_string (file), Qnil)); |
| 1309 | #ifdef CANNOT_DUMP |
| 1310 | /* Unless next switch is -nl, load "loadup.el" first thing. */ |
| 1311 | if (! no_loadup) |
| 1312 | Vtop_level = Fcons (intern ("load"), |
| 1313 | Fcons (build_string ("loadup.el"), Qnil)); |
| 1314 | #endif /* CANNOT_DUMP */ |
| 1315 | } |
| 1316 | |
| 1317 | if (initialized) |
| 1318 | { |
| 1319 | #ifdef HAVE_TZSET |
| 1320 | { |
| 1321 | /* If the execution TZ happens to be the same as the dump TZ, |
| 1322 | change it to some other value and then change it back, |
| 1323 | to force the underlying implementation to reload the TZ info. |
| 1324 | This is needed on implementations that load TZ info from files, |
| 1325 | since the TZ file contents may differ between dump and execution. */ |
| 1326 | char *tz = getenv ("TZ"); |
| 1327 | if (tz && !strcmp (tz, dump_tz)) |
| 1328 | { |
| 1329 | ++*tz; |
| 1330 | tzset (); |
| 1331 | --*tz; |
| 1332 | } |
| 1333 | } |
| 1334 | #endif |
| 1335 | } |
| 1336 | |
| 1337 | /* Gerd Moellmann <gerd@acm.org> says this makes profiling work on |
| 1338 | FreeBSD. It might work on some other systems too. |
| 1339 | Give it a try and tell me if it works on your system. */ |
| 1340 | #ifdef __FreeBSD__ |
| 1341 | #ifdef PROFILING |
| 1342 | if (initialized) |
| 1343 | { |
| 1344 | extern void _mcleanup (); |
| 1345 | extern char etext; |
| 1346 | extern void safe_bcopy (); |
| 1347 | atexit (_mcleanup); |
| 1348 | /* This uses safe_bcopy because that function comes first in the |
| 1349 | Emacs executable. It might be better to use something that |
| 1350 | gives the start of the text segment, but start_of_text is not |
| 1351 | defined on all systems now. */ |
| 1352 | monstartup (safe_bcopy, &etext); |
| 1353 | } |
| 1354 | else |
| 1355 | moncontrol (0); |
| 1356 | #endif |
| 1357 | #endif |
| 1358 | |
| 1359 | initialized = 1; |
| 1360 | |
| 1361 | #ifdef LOCALTIME_CACHE |
| 1362 | /* Some versions of localtime have a bug. They cache the value of the time |
| 1363 | zone rather than looking it up every time. Since localtime() is |
| 1364 | called to bolt the undumping time into the undumped emacs, this |
| 1365 | results in localtime ignoring the TZ environment variable. |
| 1366 | This flushes the new TZ value into localtime. */ |
| 1367 | tzset (); |
| 1368 | #endif /* defined (LOCALTIME_CACHE) */ |
| 1369 | |
| 1370 | /* Enter editor command loop. This never returns. */ |
| 1371 | Frecursive_edit (); |
| 1372 | /* NOTREACHED */ |
| 1373 | } |
| 1374 | \f |
| 1375 | /* Sort the args so we can find the most important ones |
| 1376 | at the beginning of argv. */ |
| 1377 | |
| 1378 | /* First, here's a table of all the standard options. */ |
| 1379 | |
| 1380 | struct standard_args |
| 1381 | { |
| 1382 | char *name; |
| 1383 | char *longname; |
| 1384 | int priority; |
| 1385 | int nargs; |
| 1386 | }; |
| 1387 | |
| 1388 | struct standard_args standard_args[] = |
| 1389 | { |
| 1390 | { "-version", "--version", 150, 0 }, |
| 1391 | #ifdef HAVE_SHM |
| 1392 | { "-nl", "--no-shared-memory", 140, 0 }, |
| 1393 | #endif |
| 1394 | #ifdef VMS |
| 1395 | { "-map", "--map-data", 130, 0 }, |
| 1396 | #endif |
| 1397 | { "-t", "--terminal", 120, 1 }, |
| 1398 | { "-nw", "--no-windows", 110, 0 }, |
| 1399 | { "-batch", "--batch", 100, 0 }, |
| 1400 | { "-help", "--help", 90, 0 }, |
| 1401 | { "-no-unibyte", "--no-unibyte", 83, 0 }, |
| 1402 | { "-multibyte", "--multibyte", 82, 0 }, |
| 1403 | { "-unibyte", "--unibyte", 81, 0 }, |
| 1404 | { "-no-multibyte", "--no-multibyte", 80, 0 }, |
| 1405 | #ifdef CANNOT_DUMP |
| 1406 | { "-nl", "--no-loadup", 70, 0 }, |
| 1407 | #endif |
| 1408 | /* -d must come last before the options handled in startup.el. */ |
| 1409 | { "-d", "--display", 60, 1 }, |
| 1410 | { "-display", 0, 60, 1 }, |
| 1411 | /* Now for the options handled in startup.el. */ |
| 1412 | { "-q", "--no-init-file", 50, 0 }, |
| 1413 | { "-no-init-file", 0, 50, 0 }, |
| 1414 | { "-no-site-file", "--no-site-file", 40, 0 }, |
| 1415 | { "-u", "--user", 30, 1 }, |
| 1416 | { "-user", 0, 30, 1 }, |
| 1417 | { "-debug-init", "--debug-init", 20, 0 }, |
| 1418 | { "-i", "--icon-type", 15, 0 }, |
| 1419 | { "-itype", 0, 15, 0 }, |
| 1420 | { "-iconic", "--iconic", 15, 0 }, |
| 1421 | { "-bg", "--background-color", 10, 1 }, |
| 1422 | { "-background", 0, 10, 1 }, |
| 1423 | { "-fg", "--foreground-color", 10, 1 }, |
| 1424 | { "-foreground", 0, 10, 1 }, |
| 1425 | { "-bd", "--border-color", 10, 1 }, |
| 1426 | { "-bw", "--border-width", 10, 1 }, |
| 1427 | { "-ib", "--internal-border", 10, 1 }, |
| 1428 | { "-ms", "--mouse-color", 10, 1 }, |
| 1429 | { "-cr", "--cursor-color", 10, 1 }, |
| 1430 | { "-fn", "--font", 10, 1 }, |
| 1431 | { "-font", 0, 10, 1 }, |
| 1432 | { "-g", "--geometry", 10, 1 }, |
| 1433 | { "-geometry", 0, 10, 1 }, |
| 1434 | { "-T", "--title", 10, 1 }, |
| 1435 | { "-title", 0, 10, 1 }, |
| 1436 | { "-name", "--name", 10, 1 }, |
| 1437 | { "-xrm", "--xrm", 10, 1 }, |
| 1438 | { "-r", "--reverse-video", 5, 0 }, |
| 1439 | { "-rv", 0, 5, 0 }, |
| 1440 | { "-reverse", 0, 5, 0 }, |
| 1441 | { "-hb", "--horizontal-scroll-bars", 5, 0 }, |
| 1442 | { "-vb", "--vertical-scroll-bars", 5, 0 }, |
| 1443 | /* These have the same priority as ordinary file name args, |
| 1444 | so they are not reordered with respect to those. */ |
| 1445 | { "-L", "--directory", 0, 1 }, |
| 1446 | { "-directory", 0, 0, 1 }, |
| 1447 | { "-l", "--load", 0, 1 }, |
| 1448 | { "-load", 0, 0, 1 }, |
| 1449 | { "-f", "--funcall", 0, 1 }, |
| 1450 | { "-funcall", 0, 0, 1 }, |
| 1451 | { "-eval", "--eval", 0, 1 }, |
| 1452 | { "-find-file", "--find-file", 0, 1 }, |
| 1453 | { "-visit", "--visit", 0, 1 }, |
| 1454 | { "-insert", "--insert", 0, 1 }, |
| 1455 | /* This should be processed after ordinary file name args and the like. */ |
| 1456 | { "-kill", "--kill", -10, 0 }, |
| 1457 | }; |
| 1458 | |
| 1459 | /* Reorder the elements of ARGV (assumed to have ARGC elements) |
| 1460 | so that the highest priority ones come first. |
| 1461 | Do not change the order of elements of equal priority. |
| 1462 | If an option takes an argument, keep it and its argument together. |
| 1463 | |
| 1464 | If an option that takes no argument appears more |
| 1465 | than once, eliminate all but one copy of it. */ |
| 1466 | |
| 1467 | static void |
| 1468 | sort_args (argc, argv) |
| 1469 | int argc; |
| 1470 | char **argv; |
| 1471 | { |
| 1472 | char **new = (char **) xmalloc (sizeof (char *) * argc); |
| 1473 | /* For each element of argv, |
| 1474 | the corresponding element of options is: |
| 1475 | 0 for an option that takes no arguments, |
| 1476 | 1 for an option that takes one argument, etc. |
| 1477 | -1 for an ordinary non-option argument. */ |
| 1478 | int *options = (int *) xmalloc (sizeof (int) * argc); |
| 1479 | int *priority = (int *) xmalloc (sizeof (int) * argc); |
| 1480 | int to = 1; |
| 1481 | int incoming_used = 1; |
| 1482 | int from; |
| 1483 | int i; |
| 1484 | int end_of_options = argc; |
| 1485 | |
| 1486 | /* Categorize all the options, |
| 1487 | and figure out which argv elts are option arguments. */ |
| 1488 | for (from = 1; from < argc; from++) |
| 1489 | { |
| 1490 | options[from] = -1; |
| 1491 | priority[from] = 0; |
| 1492 | if (argv[from][0] == '-') |
| 1493 | { |
| 1494 | int match, thislen; |
| 1495 | char *equals; |
| 1496 | |
| 1497 | /* If we have found "--", don't consider |
| 1498 | any more arguments as options. */ |
| 1499 | if (argv[from][1] == '-' && argv[from][2] == 0) |
| 1500 | { |
| 1501 | /* Leave the "--", and everything following it, at the end. */ |
| 1502 | for (; from < argc; from++) |
| 1503 | { |
| 1504 | priority[from] = -100; |
| 1505 | options[from] = -1; |
| 1506 | } |
| 1507 | break; |
| 1508 | } |
| 1509 | |
| 1510 | /* Look for a match with a known old-fashioned option. */ |
| 1511 | for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++) |
| 1512 | if (!strcmp (argv[from], standard_args[i].name)) |
| 1513 | { |
| 1514 | options[from] = standard_args[i].nargs; |
| 1515 | priority[from] = standard_args[i].priority; |
| 1516 | if (from + standard_args[i].nargs >= argc) |
| 1517 | fatal ("Option `%s' requires an argument\n", argv[from]); |
| 1518 | from += standard_args[i].nargs; |
| 1519 | goto done; |
| 1520 | } |
| 1521 | |
| 1522 | /* Look for a match with a known long option. |
| 1523 | MATCH is -1 if no match so far, -2 if two or more matches so far, |
| 1524 | >= 0 (the table index of the match) if just one match so far. */ |
| 1525 | if (argv[from][1] == '-') |
| 1526 | { |
| 1527 | match = -1; |
| 1528 | thislen = strlen (argv[from]); |
| 1529 | equals = index (argv[from], '='); |
| 1530 | if (equals != 0) |
| 1531 | thislen = equals - argv[from]; |
| 1532 | |
| 1533 | for (i = 0; |
| 1534 | i < sizeof (standard_args) / sizeof (standard_args[0]); i++) |
| 1535 | if (standard_args[i].longname |
| 1536 | && !strncmp (argv[from], standard_args[i].longname, |
| 1537 | thislen)) |
| 1538 | { |
| 1539 | if (match == -1) |
| 1540 | match = i; |
| 1541 | else |
| 1542 | match = -2; |
| 1543 | } |
| 1544 | |
| 1545 | /* If we found exactly one match, use that. */ |
| 1546 | if (match >= 0) |
| 1547 | { |
| 1548 | options[from] = standard_args[match].nargs; |
| 1549 | priority[from] = standard_args[match].priority; |
| 1550 | /* If --OPTION=VALUE syntax is used, |
| 1551 | this option uses just one argv element. */ |
| 1552 | if (equals != 0) |
| 1553 | options[from] = 0; |
| 1554 | if (from + options[from] >= argc) |
| 1555 | fatal ("Option `%s' requires an argument\n", argv[from]); |
| 1556 | from += options[from]; |
| 1557 | } |
| 1558 | } |
| 1559 | done: ; |
| 1560 | } |
| 1561 | } |
| 1562 | |
| 1563 | /* Copy the arguments, in order of decreasing priority, to NEW. */ |
| 1564 | new[0] = argv[0]; |
| 1565 | while (incoming_used < argc) |
| 1566 | { |
| 1567 | int best = -1; |
| 1568 | int best_priority = -9999; |
| 1569 | |
| 1570 | /* Find the highest priority remaining option. |
| 1571 | If several have equal priority, take the first of them. */ |
| 1572 | for (from = 1; from < argc; from++) |
| 1573 | { |
| 1574 | if (argv[from] != 0 && priority[from] > best_priority) |
| 1575 | { |
| 1576 | best_priority = priority[from]; |
| 1577 | best = from; |
| 1578 | } |
| 1579 | /* Skip option arguments--they are tied to the options. */ |
| 1580 | if (options[from] > 0) |
| 1581 | from += options[from]; |
| 1582 | } |
| 1583 | |
| 1584 | if (best < 0) |
| 1585 | abort (); |
| 1586 | |
| 1587 | /* Copy the highest priority remaining option, with its args, to NEW. |
| 1588 | Unless it is a duplicate of the previous one. */ |
| 1589 | if (! (options[best] == 0 |
| 1590 | && ! strcmp (new[to - 1], argv[best]))) |
| 1591 | { |
| 1592 | new[to++] = argv[best]; |
| 1593 | for (i = 0; i < options[best]; i++) |
| 1594 | new[to++] = argv[best + i + 1]; |
| 1595 | } |
| 1596 | |
| 1597 | incoming_used += 1 + (options[best] > 0 ? options[best] : 0); |
| 1598 | |
| 1599 | /* Clear out this option in ARGV. */ |
| 1600 | argv[best] = 0; |
| 1601 | for (i = 0; i < options[best]; i++) |
| 1602 | argv[best + i + 1] = 0; |
| 1603 | } |
| 1604 | |
| 1605 | /* If duplicate options were deleted, fill up extra space with null ptrs. */ |
| 1606 | while (to < argc) |
| 1607 | new[to++] = 0; |
| 1608 | |
| 1609 | bcopy (new, argv, sizeof (char *) * argc); |
| 1610 | |
| 1611 | free (options); |
| 1612 | free (new); |
| 1613 | free (priority); |
| 1614 | } |
| 1615 | \f |
| 1616 | DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P", |
| 1617 | "Exit the Emacs job and kill it.\n\ |
| 1618 | If ARG is an integer, return ARG as the exit program code.\n\ |
| 1619 | If ARG is a string, stuff it as keyboard input.\n\n\ |
| 1620 | The value of `kill-emacs-hook', if not void,\n\ |
| 1621 | is a list of functions (of no args),\n\ |
| 1622 | all of which are called before Emacs is actually killed.") |
| 1623 | (arg) |
| 1624 | Lisp_Object arg; |
| 1625 | { |
| 1626 | Lisp_Object hook, hook1; |
| 1627 | int i; |
| 1628 | struct gcpro gcpro1; |
| 1629 | |
| 1630 | GCPRO1 (arg); |
| 1631 | |
| 1632 | if (feof (stdin)) |
| 1633 | arg = Qt; |
| 1634 | |
| 1635 | if (!NILP (Vrun_hooks) && !noninteractive) |
| 1636 | call1 (Vrun_hooks, intern ("kill-emacs-hook")); |
| 1637 | |
| 1638 | UNGCPRO; |
| 1639 | |
| 1640 | /* Is it really necessary to do this deassign |
| 1641 | when we are going to exit anyway? */ |
| 1642 | /* #ifdef VMS |
| 1643 | stop_vms_input (); |
| 1644 | #endif */ |
| 1645 | |
| 1646 | shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil); |
| 1647 | |
| 1648 | /* If we have an auto-save list file, |
| 1649 | kill it because we are exiting Emacs deliberately (not crashing). |
| 1650 | Do it after shut_down_emacs, which does an auto-save. */ |
| 1651 | if (STRINGP (Vauto_save_list_file_name)) |
| 1652 | unlink (XSTRING (Vauto_save_list_file_name)->data); |
| 1653 | |
| 1654 | exit (INTEGERP (arg) ? XINT (arg) |
| 1655 | #ifdef VMS |
| 1656 | : 1 |
| 1657 | #else |
| 1658 | : 0 |
| 1659 | #endif |
| 1660 | ); |
| 1661 | /* NOTREACHED */ |
| 1662 | } |
| 1663 | |
| 1664 | |
| 1665 | /* Perform an orderly shutdown of Emacs. Autosave any modified |
| 1666 | buffers, kill any child processes, clean up the terminal modes (if |
| 1667 | we're in the foreground), and other stuff like that. Don't perform |
| 1668 | any redisplay; this may be called when Emacs is shutting down in |
| 1669 | the background, or after its X connection has died. |
| 1670 | |
| 1671 | If SIG is a signal number, print a message for it. |
| 1672 | |
| 1673 | This is called by fatal signal handlers, X protocol error handlers, |
| 1674 | and Fkill_emacs. */ |
| 1675 | |
| 1676 | void |
| 1677 | shut_down_emacs (sig, no_x, stuff) |
| 1678 | int sig, no_x; |
| 1679 | Lisp_Object stuff; |
| 1680 | { |
| 1681 | /* Prevent running of hooks from now on. */ |
| 1682 | Vrun_hooks = Qnil; |
| 1683 | |
| 1684 | /* If we are controlling the terminal, reset terminal modes */ |
| 1685 | #ifdef EMACS_HAVE_TTY_PGRP |
| 1686 | { |
| 1687 | int pgrp = EMACS_GETPGRP (0); |
| 1688 | |
| 1689 | int tpgrp; |
| 1690 | if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1 |
| 1691 | && tpgrp == pgrp) |
| 1692 | { |
| 1693 | fflush (stdout); |
| 1694 | reset_sys_modes (); |
| 1695 | if (sig && sig != SIGTERM) |
| 1696 | fprintf (stderr, "Fatal error (%d).", sig); |
| 1697 | } |
| 1698 | } |
| 1699 | #else |
| 1700 | fflush (stdout); |
| 1701 | reset_sys_modes (); |
| 1702 | #endif |
| 1703 | |
| 1704 | stuff_buffered_input (stuff); |
| 1705 | |
| 1706 | kill_buffer_processes (Qnil); |
| 1707 | Fdo_auto_save (Qt, Qnil); |
| 1708 | |
| 1709 | #ifdef CLASH_DETECTION |
| 1710 | unlock_all_files (); |
| 1711 | #endif |
| 1712 | |
| 1713 | #ifdef VMS |
| 1714 | kill_vms_processes (); |
| 1715 | #endif |
| 1716 | |
| 1717 | #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */ |
| 1718 | #ifdef HAVE_X_WINDOWS |
| 1719 | /* It's not safe to call intern here. Maybe we are crashing. */ |
| 1720 | if (!noninteractive && SYMBOLP (Vwindow_system) |
| 1721 | && XSYMBOL (Vwindow_system)->name->size == 1 |
| 1722 | && XSYMBOL (Vwindow_system)->name->data[0] == 'x' |
| 1723 | && ! no_x) |
| 1724 | Fx_close_current_connection (); |
| 1725 | #endif /* HAVE_X_WINDOWS */ |
| 1726 | #endif |
| 1727 | |
| 1728 | #ifdef SIGIO |
| 1729 | /* There is a tendency for a SIGIO signal to arrive within exit, |
| 1730 | and cause a SIGHUP because the input descriptor is already closed. */ |
| 1731 | unrequest_sigio (); |
| 1732 | signal (SIGIO, SIG_IGN); |
| 1733 | #endif |
| 1734 | |
| 1735 | #ifdef WINDOWSNT |
| 1736 | term_ntproc (); |
| 1737 | #endif |
| 1738 | |
| 1739 | check_glyph_memory (); |
| 1740 | |
| 1741 | #ifdef MSDOS |
| 1742 | dos_cleanup (); |
| 1743 | #endif |
| 1744 | } |
| 1745 | |
| 1746 | |
| 1747 | \f |
| 1748 | #ifndef CANNOT_DUMP |
| 1749 | |
| 1750 | #ifdef HAVE_SHM |
| 1751 | |
| 1752 | DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0, |
| 1753 | "Dump current state of Emacs into data file FILENAME.\n\ |
| 1754 | This function exists on systems that use HAVE_SHM.") |
| 1755 | (filename) |
| 1756 | Lisp_Object filename; |
| 1757 | { |
| 1758 | extern char my_edata[]; |
| 1759 | Lisp_Object tem; |
| 1760 | |
| 1761 | CHECK_STRING (filename, 0); |
| 1762 | filename = Fexpand_file_name (filename, Qnil); |
| 1763 | |
| 1764 | tem = Vpurify_flag; |
| 1765 | Vpurify_flag = Qnil; |
| 1766 | |
| 1767 | fflush (stdout); |
| 1768 | /* Tell malloc where start of impure now is */ |
| 1769 | /* Also arrange for warnings when nearly out of space. */ |
| 1770 | #ifndef SYSTEM_MALLOC |
| 1771 | memory_warnings (my_edata, malloc_warning); |
| 1772 | #endif |
| 1773 | map_out_data (XSTRING (filename)->data); |
| 1774 | |
| 1775 | Vpurify_flag = tem; |
| 1776 | |
| 1777 | return Qnil; |
| 1778 | } |
| 1779 | |
| 1780 | #else /* not HAVE_SHM */ |
| 1781 | |
| 1782 | DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0, |
| 1783 | "Dump current state of Emacs into executable file FILENAME.\n\ |
| 1784 | Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\ |
| 1785 | This is used in the file `loadup.el' when building Emacs.\n\ |
| 1786 | \n\ |
| 1787 | You must run Emacs in batch mode in order to dump it.") |
| 1788 | (filename, symfile) |
| 1789 | Lisp_Object filename, symfile; |
| 1790 | { |
| 1791 | extern char my_edata[]; |
| 1792 | Lisp_Object tem; |
| 1793 | Lisp_Object symbol; |
| 1794 | int count = specpdl_ptr - specpdl; |
| 1795 | |
| 1796 | if (! noninteractive) |
| 1797 | error ("Dumping Emacs works only in batch mode"); |
| 1798 | |
| 1799 | /* Bind `command-line-processed' to nil before dumping, |
| 1800 | so that the dumped Emacs will process its command line |
| 1801 | and set up to work with X windows if appropriate. */ |
| 1802 | symbol = intern ("command-line-process"); |
| 1803 | specbind (symbol, Qnil); |
| 1804 | |
| 1805 | CHECK_STRING (filename, 0); |
| 1806 | filename = Fexpand_file_name (filename, Qnil); |
| 1807 | if (!NILP (symfile)) |
| 1808 | { |
| 1809 | CHECK_STRING (symfile, 0); |
| 1810 | if (XSTRING (symfile)->size) |
| 1811 | symfile = Fexpand_file_name (symfile, Qnil); |
| 1812 | } |
| 1813 | |
| 1814 | tem = Vpurify_flag; |
| 1815 | Vpurify_flag = Qnil; |
| 1816 | |
| 1817 | #ifdef HAVE_TZSET |
| 1818 | set_time_zone_rule (dump_tz); |
| 1819 | #ifndef LOCALTIME_CACHE |
| 1820 | /* Force a tz reload, since set_time_zone_rule doesn't. */ |
| 1821 | tzset (); |
| 1822 | #endif |
| 1823 | #endif |
| 1824 | |
| 1825 | fflush (stdout); |
| 1826 | #ifdef VMS |
| 1827 | mapout_data (XSTRING (filename)->data); |
| 1828 | #else |
| 1829 | /* Tell malloc where start of impure now is */ |
| 1830 | /* Also arrange for warnings when nearly out of space. */ |
| 1831 | #ifndef SYSTEM_MALLOC |
| 1832 | #ifndef WINDOWSNT |
| 1833 | /* On Windows, this was done before dumping, and that once suffices. |
| 1834 | Meanwhile, my_edata is not valid on Windows. */ |
| 1835 | memory_warnings (my_edata, malloc_warning); |
| 1836 | #endif /* not WINDOWSNT */ |
| 1837 | #endif |
| 1838 | #ifdef DOUG_LEA_MALLOC |
| 1839 | malloc_state_ptr = malloc_get_state (); |
| 1840 | #endif |
| 1841 | unexec (XSTRING (filename)->data, |
| 1842 | !NILP (symfile) ? XSTRING (symfile)->data : 0, my_edata, 0, 0); |
| 1843 | #ifdef DOUG_LEA_MALLOC |
| 1844 | free (malloc_state_ptr); |
| 1845 | #endif |
| 1846 | #endif /* not VMS */ |
| 1847 | |
| 1848 | Vpurify_flag = tem; |
| 1849 | |
| 1850 | return unbind_to (count, Qnil); |
| 1851 | } |
| 1852 | |
| 1853 | #endif /* not HAVE_SHM */ |
| 1854 | |
| 1855 | #endif /* not CANNOT_DUMP */ |
| 1856 | \f |
| 1857 | #ifndef SEPCHAR |
| 1858 | #define SEPCHAR ':' |
| 1859 | #endif |
| 1860 | |
| 1861 | Lisp_Object |
| 1862 | decode_env_path (evarname, defalt) |
| 1863 | char *evarname, *defalt; |
| 1864 | { |
| 1865 | register char *path, *p; |
| 1866 | Lisp_Object lpath, element, tem; |
| 1867 | |
| 1868 | /* It's okay to use getenv here, because this function is only used |
| 1869 | to initialize variables when Emacs starts up, and isn't called |
| 1870 | after that. */ |
| 1871 | if (evarname != 0) |
| 1872 | path = (char *) getenv (evarname); |
| 1873 | else |
| 1874 | path = 0; |
| 1875 | if (!path) |
| 1876 | path = defalt; |
| 1877 | #ifdef DOS_NT |
| 1878 | /* Ensure values from the environment use the proper directory separator. */ |
| 1879 | if (path) |
| 1880 | { |
| 1881 | p = alloca (strlen (path) + 1); |
| 1882 | strcpy (p, path); |
| 1883 | path = p; |
| 1884 | |
| 1885 | if ('/' == DIRECTORY_SEP) |
| 1886 | dostounix_filename (path); |
| 1887 | else |
| 1888 | unixtodos_filename (path); |
| 1889 | } |
| 1890 | #endif |
| 1891 | lpath = Qnil; |
| 1892 | while (1) |
| 1893 | { |
| 1894 | p = index (path, SEPCHAR); |
| 1895 | if (!p) p = path + strlen (path); |
| 1896 | element = (p - path ? make_string (path, p - path) |
| 1897 | : build_string (".")); |
| 1898 | |
| 1899 | /* Add /: to the front of the name |
| 1900 | if it would otherwise be treated as magic. */ |
| 1901 | tem = Ffind_file_name_handler (element, Qt); |
| 1902 | if (! NILP (tem)) |
| 1903 | element = concat2 (build_string ("/:"), element); |
| 1904 | |
| 1905 | lpath = Fcons (element, lpath); |
| 1906 | if (*p) |
| 1907 | path = p + 1; |
| 1908 | else |
| 1909 | break; |
| 1910 | } |
| 1911 | return Fnreverse (lpath); |
| 1912 | } |
| 1913 | |
| 1914 | void |
| 1915 | syms_of_emacs () |
| 1916 | { |
| 1917 | Qfile_name_handler_alist = intern ("file-name-handler-alist"); |
| 1918 | staticpro (&Qfile_name_handler_alist); |
| 1919 | |
| 1920 | #ifndef CANNOT_DUMP |
| 1921 | #ifdef HAVE_SHM |
| 1922 | defsubr (&Sdump_emacs_data); |
| 1923 | #else |
| 1924 | defsubr (&Sdump_emacs); |
| 1925 | #endif |
| 1926 | #endif |
| 1927 | |
| 1928 | defsubr (&Skill_emacs); |
| 1929 | |
| 1930 | defsubr (&Sinvocation_name); |
| 1931 | defsubr (&Sinvocation_directory); |
| 1932 | |
| 1933 | DEFVAR_LISP ("command-line-args", &Vcommand_line_args, |
| 1934 | "Args passed by shell to Emacs, as a list of strings."); |
| 1935 | |
| 1936 | DEFVAR_LISP ("system-type", &Vsystem_type, |
| 1937 | "Value is symbol indicating type of operating system you are using."); |
| 1938 | Vsystem_type = intern (SYSTEM_TYPE); |
| 1939 | |
| 1940 | DEFVAR_LISP ("system-configuration", &Vsystem_configuration, |
| 1941 | "Value is string indicating configuration Emacs was built for."); |
| 1942 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); |
| 1943 | |
| 1944 | DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options, |
| 1945 | "String containing the configuration options Emacs was built with."); |
| 1946 | Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS); |
| 1947 | |
| 1948 | DEFVAR_BOOL ("noninteractive", &noninteractive1, |
| 1949 | "Non-nil means Emacs is running without interactive terminal."); |
| 1950 | |
| 1951 | DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook, |
| 1952 | "Hook to be run whenever kill-emacs is called.\n\ |
| 1953 | Since kill-emacs may be invoked when the terminal is disconnected (or\n\ |
| 1954 | in other similar situations), functions placed on this hook should not\n\ |
| 1955 | expect to be able to interact with the user. To ask for confirmation,\n\ |
| 1956 | see `kill-emacs-query-functions' instead."); |
| 1957 | Vkill_emacs_hook = Qnil; |
| 1958 | |
| 1959 | #ifdef SIGUSR1 |
| 1960 | DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook, |
| 1961 | "Hook to be run whenever emacs receives a USR1 signal"); |
| 1962 | Vsignal_USR1_hook = Qnil; |
| 1963 | #ifdef SIGUSR2 |
| 1964 | DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook, |
| 1965 | "Hook to be run whenever emacs receives a USR2 signal"); |
| 1966 | Vsignal_USR2_hook = Qnil; |
| 1967 | #endif |
| 1968 | #endif |
| 1969 | |
| 1970 | |
| 1971 | DEFVAR_INT ("emacs-priority", &emacs_priority, |
| 1972 | "Priority for Emacs to run at.\n\ |
| 1973 | This value is effective only if set before Emacs is dumped,\n\ |
| 1974 | and only if the Emacs executable is installed with setuid to permit\n\ |
| 1975 | it to change priority. (Emacs sets its uid back to the real uid.)\n\ |
| 1976 | Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\ |
| 1977 | before you compile Emacs, to enable the code for this feature."); |
| 1978 | emacs_priority = 0; |
| 1979 | |
| 1980 | DEFVAR_LISP ("path-separator", &Vpath_separator, |
| 1981 | "The directory separator in search paths, as a string."); |
| 1982 | { |
| 1983 | char c = SEPCHAR; |
| 1984 | Vpath_separator = make_string (&c, 1); |
| 1985 | } |
| 1986 | |
| 1987 | DEFVAR_LISP ("invocation-name", &Vinvocation_name, |
| 1988 | "The program name that was used to run Emacs.\n\ |
| 1989 | Any directory names are omitted."); |
| 1990 | |
| 1991 | DEFVAR_LISP ("invocation-directory", &Vinvocation_directory, |
| 1992 | "The directory in which the Emacs executable was found, to run it.\n\ |
| 1993 | The value is nil if that directory's name is not known."); |
| 1994 | |
| 1995 | DEFVAR_LISP ("installation-directory", &Vinstallation_directory, |
| 1996 | "A directory within which to look for the `lib-src' and `etc' directories.\n\ |
| 1997 | This is non-nil when we can't find those directories in their standard\n\ |
| 1998 | installed locations, but we can find them\n\ |
| 1999 | near where the Emacs executable was found."); |
| 2000 | Vinstallation_directory = Qnil; |
| 2001 | } |