src/dosfns.c

   1 /* MS-DOS specific Lisp utilities.  Coded by Manabu Higashida, 1991.
   2    Major changes May-July 1993 Morten Welinder (only 10% original code left)
   3    Copyright (C) 1991, 1993, 1996, 1997, 1998, 2001, 2002, 2003, 2004,
   4                  2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   5
   6 This file is part of GNU Emacs.
   7
   8 GNU Emacs is free software: you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation, either version 3 of the License, or
  11 (at your option) any later version.
  12
  13 GNU Emacs is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #include <config.h>
  22
  23 #ifdef MSDOS
  24 /* The entire file is within this conditional */
  25
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <dos.h>
  29 #include <setjmp.h>
  30 #include "lisp.h"
  31 #include "buffer.h"
  32 #include "termchar.h"
  33 #include "frame.h"
  34 #include "termhooks.h"
  35 #include "blockinput.h"
  36 #include "window.h"
  37 #include "dosfns.h"
  38 #include "msdos.h"
  39 #include "dispextern.h"
  40 #include "character.h"
  41 #include "coding.h"
  42 #include "process.h"
  43 #include <dpmi.h>
  44 #include <go32.h>
  45 #include <dirent.h>
  46 #include <sys/vfs.h>
  47 #include <unistd.h>
  48 #include <grp.h>
  49 #include <crt0.h>
  50
  51 DEFUN ("int86", Fint86, Sint86, 2, 2, 0,
  52        doc: /* Call specific MS-DOS interrupt number INTERRUPT with REGISTERS.
  53 Return the updated REGISTER vector.
  54
  55 INTERRUPT should be an integer in the range 0 to 255.
  56 REGISTERS should be a vector produced by `make-register' and
  57 `set-register-value'.  */)
  58      (interrupt, registers)
  59      Lisp_Object interrupt, registers;
  60 {
  61   register int i;
  62   int no;
  63   union REGS inregs, outregs;
  64   Lisp_Object val;
  65
  66   CHECK_NUMBER (interrupt);
  67   no = (unsigned long) XINT (interrupt);
  68   CHECK_VECTOR (registers);
  69   if (no < 0 || no > 0xff || XVECTOR (registers)-> size != 8)
  70     return Qnil;
  71   for (i = 0; i < 8; i++)
  72     CHECK_NUMBER (XVECTOR (registers)->contents[i]);
  73
  74   inregs.x.ax    = (unsigned long) XFASTINT (XVECTOR (registers)->contents[0]);
  75   inregs.x.bx    = (unsigned long) XFASTINT (XVECTOR (registers)->contents[1]);
  76   inregs.x.cx    = (unsigned long) XFASTINT (XVECTOR (registers)->contents[2]);
  77   inregs.x.dx    = (unsigned long) XFASTINT (XVECTOR (registers)->contents[3]);
  78   inregs.x.si    = (unsigned long) XFASTINT (XVECTOR (registers)->contents[4]);
  79   inregs.x.di    = (unsigned long) XFASTINT (XVECTOR (registers)->contents[5]);
  80   inregs.x.cflag = (unsigned long) XFASTINT (XVECTOR (registers)->contents[6]);
  81   inregs.x.flags = (unsigned long) XFASTINT (XVECTOR (registers)->contents[7]);
  82
  83   int86 (no, &inregs, &outregs);
  84
  85   XVECTOR (registers)->contents[0] = make_number (outregs.x.ax);
  86   XVECTOR (registers)->contents[1] = make_number (outregs.x.bx);
  87   XVECTOR (registers)->contents[2] = make_number (outregs.x.cx);
  88   XVECTOR (registers)->contents[3] = make_number (outregs.x.dx);
  89   XVECTOR (registers)->contents[4] = make_number (outregs.x.si);
  90   XVECTOR (registers)->contents[5] = make_number (outregs.x.di);
  91   XVECTOR (registers)->contents[6] = make_number (outregs.x.cflag);
  92   XVECTOR (registers)->contents[7] = make_number (outregs.x.flags);
  93
  94   return registers;
  95 }
  96
  97 DEFUN ("msdos-memget", Fdos_memget, Sdos_memget, 2, 2, 0,
  98        doc: /* Read DOS memory at offset ADDRESS into VECTOR.
  99 Return the updated VECTOR.  */)
 100      (address, vector)
 101      Lisp_Object address, vector;
 102 {
 103   register int i;
 104   int offs, len;
 105   char *buf;
 106   Lisp_Object val;
 107
 108   CHECK_NUMBER (address);
 109   offs = (unsigned long) XINT (address);
 110   CHECK_VECTOR (vector);
 111   len = XVECTOR (vector)-> size;
 112   if (len < 1 || len > 2048 || offs < 0 || offs > 0xfffff - len)
 113     return Qnil;
 114   buf = alloca (len);
 115   dosmemget (offs, len, buf);
 116
 117   for (i = 0; i < len; i++)
 118     XVECTOR (vector)->contents[i] = make_number (buf[i]);
 119
 120   return vector;
 121 }
 122
 123 DEFUN ("msdos-memput", Fdos_memput, Sdos_memput, 2, 2, 0,
 124        doc: /* Write DOS memory at offset ADDRESS from VECTOR.  */)
 125      (address, vector)
 126      Lisp_Object address, vector;
 127 {
 128   register int i;
 129   int offs, len;
 130   char *buf;
 131   Lisp_Object val;
 132
 133   CHECK_NUMBER (address);
 134   offs = (unsigned long) XINT (address);
 135   CHECK_VECTOR (vector);
 136   len = XVECTOR (vector)-> size;
 137   if (len < 1 || len > 2048 || offs < 0 || offs > 0xfffff - len)
 138     return Qnil;
 139   buf = alloca (len);
 140
 141   for (i = 0; i < len; i++)
 142     {
 143       CHECK_NUMBER (XVECTOR (vector)->contents[i]);
 144       buf[i] = (unsigned char) XFASTINT (XVECTOR (vector)->contents[i]) & 0xFF;
 145     }
 146
 147   dosmemput (buf, len, offs);
 148   return Qt;
 149 }
 150
 151 DEFUN ("msdos-set-keyboard", Fmsdos_set_keyboard, Smsdos_set_keyboard, 1, 2, 0,
 152        doc: /* Set keyboard layout according to COUNTRY-CODE.
 153 If the optional argument ALLKEYS is non-nil, the keyboard is mapped for
 154 all keys; otherwise it is only used when the ALT key is pressed.
 155 The current keyboard layout is available in dos-keyboard-code.  */)
 156      (country_code, allkeys)
 157      Lisp_Object country_code, allkeys;
 158 {
 159   CHECK_NUMBER (country_code);
 160   if (!dos_set_keyboard (XINT (country_code), !NILP (allkeys)))
 161     return Qnil;
 162   return Qt;
 163 }
 164
 165 #ifndef HAVE_X_WINDOWS
 166 /* Later we might want to control the mouse interface with this function,
 167    e.g., with respect to non-80 column screen modes.  */
 168
 169 DEFUN ("msdos-mouse-p", Fmsdos_mouse_p, Smsdos_mouse_p, 0, 0, 0,
 170        doc: /* Report whether a mouse is present.  */)
 171      ()
 172 {
 173   if (have_mouse)
 174     return Qt;
 175   else
 176     return Qnil;
 177 }
 178 #endif
 179
 180 DEFUN ("msdos-mouse-init", Fmsdos_mouse_init, Smsdos_mouse_init, 0, 0, "",
 181        doc: /* Initialize and enable mouse if available.  */)
 182      ()
 183 {
 184   if (have_mouse)
 185     {
 186       have_mouse = 1;
 187       mouse_init ();
 188       return Qt;
 189     }
 190   return Qnil;
 191 }
 192
 193 DEFUN ("msdos-mouse-enable", Fmsdos_mouse_enable, Smsdos_mouse_enable, 0, 0, "",
 194        doc: /* Enable mouse if available.  */)
 195      ()
 196 {
 197   if (have_mouse)
 198     {
 199       have_mouse = 1;
 200       mouse_on ();
 201     }
 202   return have_mouse ? Qt : Qnil;
 203 }
 204
 205 DEFUN ("msdos-mouse-disable", Fmsdos_mouse_disable, Smsdos_mouse_disable, 0, 0, "",
 206        doc: /* Disable mouse if available.  */)
 207      ()
 208 {
 209   mouse_off ();
 210   if (have_mouse) have_mouse = -1;
 211   return Qnil;
 212 }
 213
 214 DEFUN ("insert-startup-screen", Finsert_startup_screen, Sinsert_startup_screen, 0, 0, "",
 215        doc: /* Insert copy of screen contents prior to starting Emacs.
 216 Return nil if startup screen is not available.  */)
 217      ()
 218 {
 219   char *s;
 220   int rows, cols, i, j;
 221
 222   if (!dos_get_saved_screen (&s, &rows, &cols))
 223     return Qnil;
 224
 225   for (i = 0; i < rows; i++)
 226     {
 227       for (j = 0; j < cols; j++)
 228         {
 229           insert_char (*s);
 230           s += 2;
 231         }
 232       insert_char ('\n');
 233     }
 234
 235   return Qt;
 236 }
 237 \f
 238 /* country info */
 239 EMACS_INT dos_country_code;
 240 EMACS_INT dos_codepage;
 241 EMACS_INT dos_timezone_offset;
 242 EMACS_INT dos_decimal_point;
 243 EMACS_INT dos_keyboard_layout;
 244 unsigned char dos_country_info[DOS_COUNTRY_INFO];
 245 static unsigned char usa_country_info[DOS_COUNTRY_INFO] = {
 246   0, 0,                         /* date format */
 247   '$', 0, 0, 0, 0,              /* currency string */
 248   ',', 0,                       /* thousands separator */
 249   '.', 0,                       /* decimal separator */
 250   '/', 0,                       /* date separator */
 251   ':', 0,                       /* time separator */
 252   0,                            /* currency format */
 253   2,                            /* digits after decimal in currency */
 254   0,                            /* time format */
 255   0, 0, 0, 0,                   /* address of case map routine, GPF if used */
 256   ' ', 0,                       /* data-list separator (?) */
 257   0, 0, 0, 0, 0, 0, 0, 0, 0, 0  /* reserved */
 258 };
 259
 260 EMACS_INT dos_hyper_key;
 261 EMACS_INT dos_super_key;
 262 EMACS_INT dos_keypad_mode;
 263
 264 Lisp_Object Vdos_version;
 265 Lisp_Object Vdos_display_scancodes;
 266
 267 #ifndef HAVE_X_WINDOWS
 268 static unsigned dos_windows_version;
 269 Lisp_Object Vdos_windows_version;
 270
 271 char parent_vm_title[50];       /* Ralf Brown says 30 is enough */
 272 int w95_set_virtual_machine_title (const char *);
 273
 274 void
 275 restore_parent_vm_title (void)
 276 {
 277   if (NILP (Vdos_windows_version))
 278     return;
 279   if ((dos_windows_version & 0xff) >= 4 && parent_vm_title[0])
 280     w95_set_virtual_machine_title (parent_vm_title);
 281   delay (50);
 282 }
 283 #endif /* !HAVE_X_WINDOWS */
 284
 285 void
 286 init_dosfns (void)
 287 {
 288   union REGS regs;
 289   _go32_dpmi_registers dpmiregs;
 290   unsigned long xbuf = _go32_info_block.linear_address_of_transfer_buffer;
 291
 292 #ifndef SYSTEM_MALLOC
 293   get_lim_data (); /* why the hell isn't this called elsewhere? */
 294 #endif
 295
 296   regs.x.ax = 0x3000;
 297   intdos (&regs, &regs);
 298   Vdos_version = Fcons (make_number (regs.h.al), make_number (regs.h.ah));
 299
 300   /* Obtain the country code via DPMI, use DJGPP transfer buffer.  */
 301   dpmiregs.x.ax = 0x3800;
 302   dpmiregs.x.ds = xbuf >> 4;
 303   dpmiregs.x.dx = 0;
 304   dpmiregs.x.ss = dpmiregs.x.sp = dpmiregs.x.flags = 0;
 305   _go32_dpmi_simulate_int (0x21, &dpmiregs);
 306   if (dpmiregs.x.flags & 1)
 307     {
 308       dos_country_code = 1;     /* assume USA if 213800 failed */
 309       memcpy (dos_country_info, usa_country_info, DOS_COUNTRY_INFO);
 310     }
 311   else
 312     {
 313       dos_country_code = dpmiregs.x.bx;
 314       dosmemget (xbuf, DOS_COUNTRY_INFO, dos_country_info);
 315     }
 316
 317   dos_set_keyboard (dos_country_code, 0);
 318
 319   regs.x.ax = 0x6601;
 320   intdos (&regs, &regs);
 321   if (regs.x.cflag)
 322     /* Estimate code page from country code */
 323     switch (dos_country_code)
 324       {
 325       case 45: /* Denmark */
 326       case 47: /* Norway */
 327         dos_codepage = 865;
 328         break;
 329       default:
 330         /* US */
 331         dos_codepage = 437;
 332       }
 333   else
 334     dos_codepage = regs.x.bx & 0xffff;
 335
 336 #ifndef HAVE_X_WINDOWS
 337   parent_vm_title[0] = '\0';
 338
 339   /* If we are running from DOS box on MS-Windows, get Windows version.  */
 340   dpmiregs.x.ax = 0x1600;       /* enhanced mode installation check */
 341   dpmiregs.x.ss = dpmiregs.x.sp = dpmiregs.x.flags = 0;
 342   _go32_dpmi_simulate_int (0x2f, &dpmiregs);
 343   /* We only support Windows-specific features when we run on Windows 9X
 344      or on Windows 3.X/enhanced mode.
 345
 346      Int 2Fh/AX=1600h returns:
 347
 348      AL = 00:  no Windows at all;
 349      AL = 01:  Windows/386 2.x;
 350      AL = 80h: Windows 3.x in mode other than enhanced;
 351      AL = FFh: Windows/386 2.x
 352
 353      We also check AH > 0 (Windows 3.1 or later), in case AL tricks us.  */
 354   if (dpmiregs.h.al > 2 && dpmiregs.h.al != 0x80 && dpmiregs.h.al != 0xff
 355       && (dpmiregs.h.al > 3 || dpmiregs.h.ah > 0))
 356     {
 357       dos_windows_version = dpmiregs.x.ax;
 358       Vdos_windows_version =
 359         Fcons (make_number (dpmiregs.h.al), make_number (dpmiregs.h.ah));
 360
 361       /* Save the current title of this virtual machine, so we can restore
 362          it before exiting.  Otherwise, Windows 95 will continue to use
 363          the title we set even after we are history, stupido...  */
 364       if (dpmiregs.h.al >= 4)
 365         {
 366           dpmiregs.x.ax = 0x168e;
 367           dpmiregs.x.dx = 3;    /* get VM title */
 368           dpmiregs.x.cx = sizeof(parent_vm_title) - 1;
 369           dpmiregs.x.es = __tb >> 4;
 370           dpmiregs.x.di = __tb & 15;
 371           dpmiregs.x.sp = dpmiregs.x.ss = dpmiregs.x.flags = 0;
 372           _go32_dpmi_simulate_int (0x2f, &dpmiregs);
 373           if (dpmiregs.x.ax == 1)
 374             dosmemget (__tb, sizeof(parent_vm_title), parent_vm_title);
 375         }
 376     }
 377   else
 378     {
 379       dos_windows_version = 0;
 380       Vdos_windows_version = Qnil;
 381     }
 382 #endif /* !HAVE_X_WINDOWS */
 383
 384   /* Without this, we never see hidden files.
 385      Don't OR it with the previous value, so the value recorded at dump
 386      time, possibly with `preserve-case' flags set, won't get through.  */
 387   __opendir_flags = __OPENDIR_FIND_HIDDEN;
 388
 389 #if __DJGPP_MINOR__ == 0
 390   /* Under LFN, preserve the case of files as recorded in the directory
 391      (in DJGPP 2.01 and later this is automagically done by the library).  */
 392   if (!NILP (Fmsdos_long_file_names ()))
 393     __opendir_flags |= __OPENDIR_PRESERVE_CASE;
 394 #endif /* __DJGPP_MINOR__ == 0 */
 395 }
 396 \f
 397 #ifndef HAVE_X_WINDOWS
 398
 399 /* Emulation of some X window features from xfns.c and xfaces.c.  */
 400
 401 /* Standard VGA colors, in the order of their standard numbering
 402    in the default VGA palette.  */
 403 static char *vga_colors[16] = {
 404   "black", "blue", "green", "cyan", "red", "magenta", "brown",
 405   "lightgray", "darkgray", "lightblue", "lightgreen", "lightcyan",
 406   "lightred", "lightmagenta", "yellow", "white"
 407 };
 408
 409 /* Given a color name, return its index, or -1 if not found.  Note
 410    that this only performs case-insensitive comparison against the
 411    standard names.  For anything more sophisticated, like matching
 412    "gray" with "grey" or translating X color names into their MSDOS
 413    equivalents, call the Lisp function Qtty_color_desc (defined
 414    on lisp/term/tty-colors.el).  */
 415 int
 416 msdos_stdcolor_idx (const char *name)
 417 {
 418   int i;
 419
 420   for (i = 0; i < sizeof (vga_colors) / sizeof (vga_colors[0]); i++)
 421     if (xstrcasecmp (name, vga_colors[i]) == 0)
 422       return i;
 423
 424   return
 425     strcmp (name, unspecified_fg) == 0 ? FACE_TTY_DEFAULT_FG_COLOR
 426     : strcmp (name, unspecified_bg) == 0 ? FACE_TTY_DEFAULT_BG_COLOR
 427     : FACE_TTY_DEFAULT_COLOR;
 428 }
 429
 430 /* Given a color index, return its standard name.  */
 431 Lisp_Object
 432 msdos_stdcolor_name (int idx)
 433 {
 434   extern Lisp_Object Qunspecified;
 435
 436   if (idx == FACE_TTY_DEFAULT_FG_COLOR)
 437     return build_string (unspecified_fg);
 438   else if (idx == FACE_TTY_DEFAULT_BG_COLOR)
 439     return build_string (unspecified_bg);
 440   else if (idx >= 0 && idx < sizeof (vga_colors) / sizeof (vga_colors[0]))
 441     return build_string (vga_colors[idx]);
 442   else
 443     return Qunspecified;        /* meaning the default */
 444 }
 445
 446 /* Support for features that are available when we run in a DOS box
 447    on MS-Windows.  */
 448 int
 449 ms_windows_version (void)
 450 {
 451   return dos_windows_version;
 452 }
 453
 454 /* Set the title of the current virtual machine, to appear on
 455    the caption bar of that machine's window.  */
 456
 457 int
 458 w95_set_virtual_machine_title (const char *title_string)
 459 {
 460   /* Only Windows 9X (version 4 and higher) support this function.  */
 461   if (!NILP (Vdos_windows_version)
 462       && (dos_windows_version & 0xff) >= 4)
 463     {
 464       _go32_dpmi_registers regs;
 465       dosmemput (title_string, strlen (title_string) + 1, __tb);
 466       regs.x.ax = 0x168e;
 467       regs.x.dx = 1;
 468       regs.x.es = __tb >> 4;
 469       regs.x.di = __tb & 15;
 470       regs.x.sp = regs.x.ss = regs.x.flags = 0;
 471       _go32_dpmi_simulate_int (0x2f, &regs);
 472       return regs.x.ax == 1;
 473     }
 474   return 0;
 475 }
 476
 477 /* Change the title of frame F to NAME.
 478    If NAME is nil, use the frame name as the title.
 479
 480    If Emacs is not run from a DOS box on Windows 9X, this only
 481    sets the name in the frame struct, but has no other effects.  */
 482
 483 void
 484 x_set_title (struct frame *f, Lisp_Object name)
 485 {
 486   /* Don't change the title if it's already NAME.  */
 487   if (EQ (name, f->title))
 488     return;
 489
 490   update_mode_lines = 1;
 491
 492   f->title = name;
 493
 494   if (NILP (name))
 495     name = f->name;
 496
 497   if (FRAME_MSDOS_P (f))
 498     {
 499       BLOCK_INPUT;
 500       w95_set_virtual_machine_title (SDATA (name));
 501       UNBLOCK_INPUT;
 502     }
 503 }
 504 #endif /* !HAVE_X_WINDOWS */
 505 \f
 506 DEFUN ("file-system-info", Ffile_system_info, Sfile_system_info, 1, 1, 0,
 507        doc: /* Return storage information about the file system FILENAME is on.
 508 Value is a list of floats (TOTAL FREE AVAIL), where TOTAL is the total
 509 storage of the file system, FREE is the free storage, and AVAIL is the
 510 storage available to a non-superuser.  All 3 numbers are in bytes.
 511 If the underlying system call fails, value is nil.  */)
 512      (filename)
 513      Lisp_Object filename;
 514 {
 515   struct statfs stfs;
 516   Lisp_Object encoded, value;
 517
 518   CHECK_STRING (filename);
 519   filename = Fexpand_file_name (filename, Qnil);
 520   encoded = ENCODE_FILE (filename);
 521
 522   if (statfs (SDATA (encoded), &stfs))
 523     value = Qnil;
 524   else
 525     value = list3 (make_float ((double) stfs.f_bsize * stfs.f_blocks),
 526                    make_float ((double) stfs.f_bsize * stfs.f_bfree),
 527                    make_float ((double) stfs.f_bsize * stfs.f_bavail));
 528
 529   return value;
 530 }
 531 \f
 532 /* System depended enumeration of and access to system processes a-la
 533    ps(1).  Here, we only return info about the running Emacs process.
 534    (There are no other processes on DOS, right?)  */
 535
 536 Lisp_Object
 537 list_system_processes (void)
 538 {
 539   Lisp_Object proclist = Qnil;
 540
 541   proclist = Fcons (make_fixnum_or_float (getpid ()), proclist);
 542
 543   return proclist;
 544 }
 545
 546 Lisp_Object
 547 system_process_attributes (Lisp_Object pid)
 548 {
 549   int proc_id;
 550   Lisp_Object attrs = Qnil;
 551
 552   CHECK_NUMBER_OR_FLOAT (pid);
 553   proc_id = FLOATP (pid) ? XFLOAT_DATA (pid) : XINT (pid);
 554
 555   if (proc_id == getpid ())
 556     {
 557       EMACS_INT uid, gid;
 558       char *usr;
 559       struct group *gr;
 560       char cmd[FILENAME_MAX];
 561       char *cmdline = NULL, *p, *q;
 562       size_t cmdline_size = 0;
 563       int i;
 564       Lisp_Object cmd_str, decoded_cmd, tem;
 565       double pmem;
 566 #ifndef SYSTEM_MALLOC
 567       extern unsigned long ret_lim_data ();
 568 #endif
 569
 570       uid = getuid ();
 571       attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid)), attrs);
 572       usr = getlogin ();
 573       if (usr)
 574         attrs = Fcons (Fcons (Quser, build_string (usr)), attrs);
 575       gid = getgid ();
 576       attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid)), attrs);
 577       gr = getgrgid (gid);
 578       if (gr)
 579         attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs);
 580       strcpy (cmd, basename (__crt0_argv[0]));
 581       /* Command name is encoded in locale-coding-system; decode it.  */
 582       cmd_str = make_unibyte_string (cmd, strlen (cmd));
 583       decoded_cmd = code_convert_string_norecord (cmd_str,
 584                                                   Vlocale_coding_system, 0);
 585       attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs);
 586       /* Pretend we have 0 as PPID.  */
 587       attrs = Fcons (Fcons (Qppid, make_number (0)), attrs);
 588       attrs = Fcons (Fcons (Qpgrp, pid), attrs);
 589       attrs = Fcons (Fcons (Qttname, build_string ("/dev/tty")), attrs);
 590       /* We are never idle!  */
 591       tem = Fget_internal_run_time ();
 592       attrs = Fcons (Fcons (Qtime, tem), attrs);
 593       attrs = Fcons (Fcons (Qthcount, make_number (1)), attrs);
 594       attrs = Fcons (Fcons (Qstart,
 595                             Fsymbol_value (intern ("before-init-time"))),
 596                      attrs);
 597       attrs = Fcons (Fcons (Qvsize,
 598                             make_fixnum_or_float ((unsigned long)sbrk(0)/1024)),
 599                      attrs);
 600       attrs = Fcons (Fcons (Qetime, tem), attrs);
 601 #ifndef SYSTEM_MALLOC
 602       /* ret_lim_data is on vm-limit.c, which is not compiled in under
 603          SYSTEM_MALLOC.  */
 604       pmem = (double)((unsigned long) sbrk (0)) / ret_lim_data () * 100.0;
 605       if (pmem > 100)
 606 #endif
 607         pmem = 100;
 608       attrs = Fcons (Fcons (Qpmem, make_float (pmem)), attrs);
 609       /* Pass 1: Count how much storage we need.  */
 610       for (i = 0; i < __crt0_argc; i++)
 611         {
 612           cmdline_size += strlen (__crt0_argv[i]) + 1; /* +1 for blank delim */
 613           if (strpbrk (__crt0_argv[i], " \t\n\r\v\f"))
 614             {
 615               cmdline_size += 2;
 616               for (p = __crt0_argv[i]; *p; p++)
 617                 {
 618                   if (*p == '"')
 619                     cmdline_size++;
 620                 }
 621             }
 622         }
 623       /* Pass 2: Allocate storage and concatenate argv[].  */
 624       cmdline = xmalloc (cmdline_size + 1);
 625       for (i = 0, q = cmdline; i < __crt0_argc; i++)
 626         {
 627           if (strpbrk (__crt0_argv[i], " \t\n\r\v\f"))
 628             {
 629               *q++ = '"';
 630               for (p = __crt0_argv[i]; *p; p++)
 631                 {
 632                   if (*p == '\"')
 633                     *q++ = '\\';
 634                   *q++ = *p;
 635                 }
 636               *q++ = '"';
 637             }
 638           else
 639             {
 640               strcpy (q, __crt0_argv[i]);
 641               q += strlen (__crt0_argv[i]);
 642             }
 643           *q++ = ' ';
 644         }
 645       /* Remove the trailing blank.  */
 646       if (q > cmdline)
 647         q[-1] = '\0';
 648
 649       /* Command line is encoded in locale-coding-system; decode it.  */
 650       cmd_str = make_unibyte_string (cmdline, strlen (cmdline));
 651       decoded_cmd = code_convert_string_norecord (cmd_str,
 652                                                   Vlocale_coding_system, 0);
 653       xfree (cmdline);
 654       attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs);
 655     }
 656
 657   return attrs;
 658 }
 659 \f
 660 void
 661 dos_cleanup (void)
 662 {
 663   struct tty_display_info *tty;
 664
 665 #ifndef HAVE_X_WINDOWS
 666   restore_parent_vm_title ();
 667 #endif
 668   /* Make sure the termscript file is committed, in case we are
 669      crashing and some vital info was written there.  */
 670   if (FRAMEP (selected_frame))
 671     {
 672       struct frame *sf = XFRAME (selected_frame);
 673
 674       if (FRAME_LIVE_P (sf)
 675           && (FRAME_MSDOS_P (sf) || FRAME_TERMCAP_P (sf)))
 676         {
 677           tty = CURTTY ();
 678           if (tty->termscript)
 679             {
 680               fflush (tty->termscript);
 681               fsync (fileno (tty->termscript));
 682             }
 683         }
 684     }
 685 }
 686
 687 /*
 688  *      Define everything
 689  */
 690 void
 691 syms_of_dosfns (void)
 692 {
 693   defsubr (&Sint86);
 694   defsubr (&Sdos_memget);
 695   defsubr (&Sdos_memput);
 696   defsubr (&Smsdos_mouse_init);
 697   defsubr (&Smsdos_mouse_enable);
 698   defsubr (&Smsdos_set_keyboard);
 699   defsubr (&Sinsert_startup_screen);
 700   defsubr (&Smsdos_mouse_disable);
 701   defsubr (&Sfile_system_info);
 702 #ifndef HAVE_X_WINDOWS
 703   defsubr (&Smsdos_mouse_p);
 704 #endif
 705
 706   DEFVAR_INT ("dos-country-code", &dos_country_code,
 707               doc: /* The country code returned by Dos when Emacs was started.
 708 Usually this is the international telephone prefix.  */);
 709
 710   DEFVAR_INT ("dos-codepage", &dos_codepage,
 711               doc: /* The codepage active when Emacs was started.
 712 The following are known:
 713         437     United States
 714         850     Multilingual (Latin I)
 715         852     Slavic (Latin II)
 716         857     Turkish
 717         860     Portugal
 718         861     Iceland
 719         863     Canada (French)
 720         865     Norway/Denmark  */);
 721
 722   DEFVAR_INT ("dos-timezone-offset", &dos_timezone_offset,
 723               doc: /* The current timezone offset to UTC in minutes.
 724 Implicitly modified when the TZ variable is changed.  */);
 725
 726   DEFVAR_LISP ("dos-version", &Vdos_version,
 727                doc: /* The (MAJOR . MINOR) Dos version (subject to modification with setver).  */);
 728
 729 #ifndef HAVE_X_WINDOWS
 730   DEFVAR_LISP ("dos-windows-version", &Vdos_windows_version,
 731                doc: /* The (MAJOR . MINOR) Windows version for DOS session on MS-Windows.  */);
 732 #endif
 733
 734   DEFVAR_LISP ("dos-display-scancodes", &Vdos_display_scancodes,
 735                doc: /* *Controls whether DOS raw keyboard events are displayed as you type.
 736 When non-nil, the keyboard scan-codes are displayed at the bottom right
 737 corner of the display (typically at the end of the mode line).
 738 The output format is: scan code:char code*modifiers.  */);
 739
 740   Vdos_display_scancodes = Qnil;
 741
 742   DEFVAR_INT ("dos-hyper-key", &dos_hyper_key,
 743               doc: /* *If set to 1, use right ALT key as hyper key.
 744 If set to 2, use right CTRL key as hyper key.  */);
 745   dos_hyper_key = 0;
 746
 747   DEFVAR_INT ("dos-super-key", &dos_super_key,
 748               doc: /* *If set to 1, use right ALT key as super key.
 749 If set to 2, use right CTRL key as super key.  */);
 750   dos_super_key = 0;
 751
 752   DEFVAR_INT ("dos-keypad-mode", &dos_keypad_mode,
 753               doc: /* *Controls what key code is returned by a key in the numeric keypad.
 754 The `numlock ON' action is only taken if no modifier keys are pressed.
 755 The value is an integer constructed by adding the following bits together:
 756
 757   0x00  Digit key returns digit    (if numlock ON)
 758   0x01  Digit key returns kp-digit (if numlock ON)
 759   0x02  Digit key returns M-digit  (if numlock ON)
 760   0x03  Digit key returns edit key (if numlock ON)
 761
 762   0x00  Grey key returns char      (if numlock ON)
 763   0x04  Grey key returns kp-key    (if numlock ON)
 764
 765   0x00  Digit key returns digit    (if numlock OFF)
 766   0x10  Digit key returns kp-digit (if numlock OFF)
 767   0x20  Digit key returns M-digit  (if numlock OFF)
 768   0x30  Digit key returns edit key (if numlock OFF)
 769
 770   0x00  Grey key returns char      (if numlock OFF)
 771   0x40  Grey key returns kp-key    (if numlock OFF)
 772
 773   0x200 ALT-0..ALT-9 in top-row produces shifted codes.  */);
 774   dos_keypad_mode = 0x75;
 775
 776   DEFVAR_INT ("dos-keyboard-layout", &dos_keyboard_layout,
 777               doc: /* Contains the country code for the current keyboard layout.
 778 Use msdos-set-keyboard to select another keyboard layout.  */);
 779   dos_keyboard_layout = 1;      /* US */
 780
 781   DEFVAR_INT ("dos-decimal-point", &dos_decimal_point,
 782               doc: /* The character to produce when kp-decimal key is pressed.
 783 If non-zero, this variable contains the character to be returned when the
 784 decimal point key in the numeric keypad is pressed when Num Lock is on.
 785 If zero, the decimal point key returns the country code specific value.  */);
 786   dos_decimal_point = 0;
 787 }
 788 #endif /* MSDOS */
 789
 790 /* arch-tag: f5ea8847-a014-42c9-83f5-7738ad640b17
 791    (do not change this comment) */