| 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, 1996-1998, 2001-2012 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GNU Emacs. |
| 6 | |
| 7 | GNU Emacs is free software: you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation, either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | GNU Emacs is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include <config.h> |
| 21 | |
| 22 | #ifdef MSDOS |
| 23 | /* The entire file is within this conditional */ |
| 24 | |
| 25 | #include <stdio.h> |
| 26 | #include <dos.h> |
| 27 | #include <setjmp.h> |
| 28 | #include "lisp.h" |
| 29 | #include "character.h" |
| 30 | #include "buffer.h" |
| 31 | #include "termchar.h" |
| 32 | #include "frame.h" |
| 33 | #include "termhooks.h" |
| 34 | #include "blockinput.h" |
| 35 | #include "window.h" |
| 36 | #include "dosfns.h" |
| 37 | #include "msdos.h" |
| 38 | #include "dispextern.h" |
| 39 | #include "coding.h" |
| 40 | #include "process.h" |
| 41 | #include <dpmi.h> |
| 42 | #include <go32.h> |
| 43 | #include <dirent.h> |
| 44 | #include <sys/vfs.h> |
| 45 | #include <unistd.h> |
| 46 | #include <grp.h> |
| 47 | #include <crt0.h> |
| 48 | |
| 49 | DEFUN ("int86", Fint86, Sint86, 2, 2, 0, |
| 50 | doc: /* Call specific MS-DOS interrupt number INTERRUPT with REGISTERS. |
| 51 | Return the updated REGISTER vector. |
| 52 | |
| 53 | INTERRUPT should be an integer in the range 0 to 255. |
| 54 | REGISTERS should be a vector produced by `make-register' and |
| 55 | `set-register-value'. */) |
| 56 | (Lisp_Object interrupt, Lisp_Object registers) |
| 57 | { |
| 58 | register int i; |
| 59 | int no; |
| 60 | union REGS inregs, outregs; |
| 61 | |
| 62 | CHECK_NUMBER (interrupt); |
| 63 | no = (unsigned long) XINT (interrupt); |
| 64 | CHECK_VECTOR (registers); |
| 65 | if (no < 0 || no > 0xff || ASIZE (registers) != 8) |
| 66 | return Qnil; |
| 67 | for (i = 0; i < 8; i++) |
| 68 | CHECK_NUMBER (XVECTOR (registers)->contents[i]); |
| 69 | |
| 70 | inregs.x.ax = (unsigned long) XFASTINT (XVECTOR (registers)->contents[0]); |
| 71 | inregs.x.bx = (unsigned long) XFASTINT (XVECTOR (registers)->contents[1]); |
| 72 | inregs.x.cx = (unsigned long) XFASTINT (XVECTOR (registers)->contents[2]); |
| 73 | inregs.x.dx = (unsigned long) XFASTINT (XVECTOR (registers)->contents[3]); |
| 74 | inregs.x.si = (unsigned long) XFASTINT (XVECTOR (registers)->contents[4]); |
| 75 | inregs.x.di = (unsigned long) XFASTINT (XVECTOR (registers)->contents[5]); |
| 76 | inregs.x.cflag = (unsigned long) XFASTINT (XVECTOR (registers)->contents[6]); |
| 77 | inregs.x.flags = (unsigned long) XFASTINT (XVECTOR (registers)->contents[7]); |
| 78 | |
| 79 | int86 (no, &inregs, &outregs); |
| 80 | |
| 81 | XVECTOR (registers)->contents[0] = make_number (outregs.x.ax); |
| 82 | XVECTOR (registers)->contents[1] = make_number (outregs.x.bx); |
| 83 | XVECTOR (registers)->contents[2] = make_number (outregs.x.cx); |
| 84 | XVECTOR (registers)->contents[3] = make_number (outregs.x.dx); |
| 85 | XVECTOR (registers)->contents[4] = make_number (outregs.x.si); |
| 86 | XVECTOR (registers)->contents[5] = make_number (outregs.x.di); |
| 87 | XVECTOR (registers)->contents[6] = make_number (outregs.x.cflag); |
| 88 | XVECTOR (registers)->contents[7] = make_number (outregs.x.flags); |
| 89 | |
| 90 | return registers; |
| 91 | } |
| 92 | |
| 93 | DEFUN ("msdos-memget", Fdos_memget, Sdos_memget, 2, 2, 0, |
| 94 | doc: /* Read DOS memory at offset ADDRESS into VECTOR. |
| 95 | Return the updated VECTOR. */) |
| 96 | (Lisp_Object address, Lisp_Object vector) |
| 97 | { |
| 98 | register int i; |
| 99 | int offs, len; |
| 100 | char *buf; |
| 101 | |
| 102 | CHECK_NUMBER (address); |
| 103 | offs = (unsigned long) XINT (address); |
| 104 | CHECK_VECTOR (vector); |
| 105 | len = ASIZE (vector); |
| 106 | if (len < 1 || len > 2048 || offs < 0 || offs > 0xfffff - len) |
| 107 | return Qnil; |
| 108 | buf = alloca (len); |
| 109 | dosmemget (offs, len, buf); |
| 110 | |
| 111 | for (i = 0; i < len; i++) |
| 112 | XVECTOR (vector)->contents[i] = make_number (buf[i]); |
| 113 | |
| 114 | return vector; |
| 115 | } |
| 116 | |
| 117 | DEFUN ("msdos-memput", Fdos_memput, Sdos_memput, 2, 2, 0, |
| 118 | doc: /* Write DOS memory at offset ADDRESS from VECTOR. */) |
| 119 | (Lisp_Object address, Lisp_Object vector) |
| 120 | { |
| 121 | register int i; |
| 122 | int offs, len; |
| 123 | char *buf; |
| 124 | |
| 125 | CHECK_NUMBER (address); |
| 126 | offs = (unsigned long) XINT (address); |
| 127 | CHECK_VECTOR (vector); |
| 128 | len = ASIZE (vector); |
| 129 | if (len < 1 || len > 2048 || offs < 0 || offs > 0xfffff - len) |
| 130 | return Qnil; |
| 131 | buf = alloca (len); |
| 132 | |
| 133 | for (i = 0; i < len; i++) |
| 134 | { |
| 135 | CHECK_NUMBER (XVECTOR (vector)->contents[i]); |
| 136 | buf[i] = (unsigned char) XFASTINT (XVECTOR (vector)->contents[i]) & 0xFF; |
| 137 | } |
| 138 | |
| 139 | dosmemput (buf, len, offs); |
| 140 | return Qt; |
| 141 | } |
| 142 | |
| 143 | DEFUN ("msdos-set-keyboard", Fmsdos_set_keyboard, Smsdos_set_keyboard, 1, 2, 0, |
| 144 | doc: /* Set keyboard layout according to COUNTRY-CODE. |
| 145 | If the optional argument ALLKEYS is non-nil, the keyboard is mapped for |
| 146 | all keys; otherwise it is only used when the ALT key is pressed. |
| 147 | The current keyboard layout is available in dos-keyboard-code. */) |
| 148 | (Lisp_Object country_code, Lisp_Object allkeys) |
| 149 | { |
| 150 | CHECK_NUMBER (country_code); |
| 151 | if (!dos_set_keyboard (XINT (country_code), !NILP (allkeys))) |
| 152 | return Qnil; |
| 153 | return Qt; |
| 154 | } |
| 155 | |
| 156 | #ifndef HAVE_X_WINDOWS |
| 157 | /* Later we might want to control the mouse interface with this function, |
| 158 | e.g., with respect to non-80 column screen modes. */ |
| 159 | |
| 160 | DEFUN ("msdos-mouse-p", Fmsdos_mouse_p, Smsdos_mouse_p, 0, 0, 0, |
| 161 | doc: /* Report whether a mouse is present. */) |
| 162 | (void) |
| 163 | { |
| 164 | if (have_mouse) |
| 165 | return Qt; |
| 166 | else |
| 167 | return Qnil; |
| 168 | } |
| 169 | #endif |
| 170 | |
| 171 | DEFUN ("msdos-mouse-init", Fmsdos_mouse_init, Smsdos_mouse_init, 0, 0, "", |
| 172 | doc: /* Initialize and enable mouse if available. */) |
| 173 | (void) |
| 174 | { |
| 175 | if (have_mouse) |
| 176 | { |
| 177 | have_mouse = 1; |
| 178 | mouse_init (); |
| 179 | return Qt; |
| 180 | } |
| 181 | return Qnil; |
| 182 | } |
| 183 | |
| 184 | DEFUN ("msdos-mouse-enable", Fmsdos_mouse_enable, Smsdos_mouse_enable, 0, 0, "", |
| 185 | doc: /* Enable mouse if available. */) |
| 186 | (void) |
| 187 | { |
| 188 | if (have_mouse) |
| 189 | { |
| 190 | have_mouse = 1; |
| 191 | mouse_on (); |
| 192 | } |
| 193 | return have_mouse ? Qt : Qnil; |
| 194 | } |
| 195 | |
| 196 | DEFUN ("msdos-mouse-disable", Fmsdos_mouse_disable, Smsdos_mouse_disable, 0, 0, "", |
| 197 | doc: /* Disable mouse if available. */) |
| 198 | (void) |
| 199 | { |
| 200 | mouse_off (); |
| 201 | if (have_mouse) have_mouse = -1; |
| 202 | return Qnil; |
| 203 | } |
| 204 | |
| 205 | DEFUN ("insert-startup-screen", Finsert_startup_screen, Sinsert_startup_screen, 0, 0, "", |
| 206 | doc: /* Insert copy of screen contents prior to starting Emacs. |
| 207 | Return nil if startup screen is not available. */) |
| 208 | (void) |
| 209 | { |
| 210 | char *s; |
| 211 | int rows, cols, i, j; |
| 212 | |
| 213 | if (!dos_get_saved_screen (&s, &rows, &cols)) |
| 214 | return Qnil; |
| 215 | |
| 216 | for (i = 0; i < rows; i++) |
| 217 | { |
| 218 | for (j = 0; j < cols; j++) |
| 219 | { |
| 220 | insert_char (*s); |
| 221 | s += 2; |
| 222 | } |
| 223 | insert_char ('\n'); |
| 224 | } |
| 225 | |
| 226 | return Qt; |
| 227 | } |
| 228 | \f |
| 229 | unsigned char dos_country_info[DOS_COUNTRY_INFO]; |
| 230 | static unsigned char usa_country_info[DOS_COUNTRY_INFO] = { |
| 231 | 0, 0, /* date format */ |
| 232 | '$', 0, 0, 0, 0, /* currency string */ |
| 233 | ',', 0, /* thousands separator */ |
| 234 | '.', 0, /* decimal separator */ |
| 235 | '/', 0, /* date separator */ |
| 236 | ':', 0, /* time separator */ |
| 237 | 0, /* currency format */ |
| 238 | 2, /* digits after decimal in currency */ |
| 239 | 0, /* time format */ |
| 240 | 0, 0, 0, 0, /* address of case map routine, GPF if used */ |
| 241 | ' ', 0, /* data-list separator (?) */ |
| 242 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* reserved */ |
| 243 | }; |
| 244 | |
| 245 | #ifndef HAVE_X_WINDOWS |
| 246 | static unsigned dos_windows_version; |
| 247 | char parent_vm_title[50]; /* Ralf Brown says 30 is enough */ |
| 248 | int w95_set_virtual_machine_title (const char *); |
| 249 | |
| 250 | void |
| 251 | restore_parent_vm_title (void) |
| 252 | { |
| 253 | if (NILP (Vdos_windows_version)) |
| 254 | return; |
| 255 | if ((dos_windows_version & 0xff) >= 4 && parent_vm_title[0]) |
| 256 | w95_set_virtual_machine_title (parent_vm_title); |
| 257 | delay (50); |
| 258 | } |
| 259 | #endif /* !HAVE_X_WINDOWS */ |
| 260 | |
| 261 | void |
| 262 | init_dosfns (void) |
| 263 | { |
| 264 | union REGS regs; |
| 265 | _go32_dpmi_registers dpmiregs; |
| 266 | unsigned long xbuf = _go32_info_block.linear_address_of_transfer_buffer; |
| 267 | |
| 268 | #ifndef SYSTEM_MALLOC |
| 269 | extern void get_lim_data (void); |
| 270 | |
| 271 | get_lim_data (); /* why the hell isn't this called elsewhere? */ |
| 272 | #endif |
| 273 | |
| 274 | regs.x.ax = 0x3000; |
| 275 | intdos (®s, ®s); |
| 276 | Vdos_version = Fcons (make_number (regs.h.al), make_number (regs.h.ah)); |
| 277 | |
| 278 | /* Obtain the country code via DPMI, use DJGPP transfer buffer. */ |
| 279 | dpmiregs.x.ax = 0x3800; |
| 280 | dpmiregs.x.ds = xbuf >> 4; |
| 281 | dpmiregs.x.dx = 0; |
| 282 | dpmiregs.x.ss = dpmiregs.x.sp = dpmiregs.x.flags = 0; |
| 283 | _go32_dpmi_simulate_int (0x21, &dpmiregs); |
| 284 | if (dpmiregs.x.flags & 1) |
| 285 | { |
| 286 | dos_country_code = 1; /* assume USA if 213800 failed */ |
| 287 | memcpy (dos_country_info, usa_country_info, DOS_COUNTRY_INFO); |
| 288 | } |
| 289 | else |
| 290 | { |
| 291 | dos_country_code = dpmiregs.x.bx; |
| 292 | dosmemget (xbuf, DOS_COUNTRY_INFO, dos_country_info); |
| 293 | } |
| 294 | |
| 295 | dos_set_keyboard (dos_country_code, 0); |
| 296 | |
| 297 | regs.x.ax = 0x6601; |
| 298 | intdos (®s, ®s); |
| 299 | if (regs.x.cflag) |
| 300 | /* Estimate code page from country code */ |
| 301 | switch (dos_country_code) |
| 302 | { |
| 303 | case 45: /* Denmark */ |
| 304 | case 47: /* Norway */ |
| 305 | dos_codepage = 865; |
| 306 | break; |
| 307 | default: |
| 308 | /* US */ |
| 309 | dos_codepage = 437; |
| 310 | } |
| 311 | else |
| 312 | dos_codepage = regs.x.bx & 0xffff; |
| 313 | |
| 314 | #ifndef HAVE_X_WINDOWS |
| 315 | parent_vm_title[0] = '\0'; |
| 316 | |
| 317 | /* If we are running from DOS box on MS-Windows, get Windows version. */ |
| 318 | dpmiregs.x.ax = 0x1600; /* enhanced mode installation check */ |
| 319 | dpmiregs.x.ss = dpmiregs.x.sp = dpmiregs.x.flags = 0; |
| 320 | _go32_dpmi_simulate_int (0x2f, &dpmiregs); |
| 321 | /* We only support Windows-specific features when we run on Windows 9X |
| 322 | or on Windows 3.X/enhanced mode. |
| 323 | |
| 324 | Int 2Fh/AX=1600h returns: |
| 325 | |
| 326 | AL = 00: no Windows at all; |
| 327 | AL = 01: Windows/386 2.x; |
| 328 | AL = 80h: Windows 3.x in mode other than enhanced; |
| 329 | AL = FFh: Windows/386 2.x |
| 330 | |
| 331 | We also check AH > 0 (Windows 3.1 or later), in case AL tricks us. */ |
| 332 | if (dpmiregs.h.al > 2 && dpmiregs.h.al != 0x80 && dpmiregs.h.al != 0xff |
| 333 | && (dpmiregs.h.al > 3 || dpmiregs.h.ah > 0)) |
| 334 | { |
| 335 | dos_windows_version = dpmiregs.x.ax; |
| 336 | Vdos_windows_version = |
| 337 | Fcons (make_number (dpmiregs.h.al), make_number (dpmiregs.h.ah)); |
| 338 | |
| 339 | /* Save the current title of this virtual machine, so we can restore |
| 340 | it before exiting. Otherwise, Windows 95 will continue to use |
| 341 | the title we set even after we are history, stupido... */ |
| 342 | if (dpmiregs.h.al >= 4) |
| 343 | { |
| 344 | dpmiregs.x.ax = 0x168e; |
| 345 | dpmiregs.x.dx = 3; /* get VM title */ |
| 346 | dpmiregs.x.cx = sizeof (parent_vm_title) - 1; |
| 347 | dpmiregs.x.es = __tb >> 4; |
| 348 | dpmiregs.x.di = __tb & 15; |
| 349 | dpmiregs.x.sp = dpmiregs.x.ss = dpmiregs.x.flags = 0; |
| 350 | _go32_dpmi_simulate_int (0x2f, &dpmiregs); |
| 351 | if (dpmiregs.x.ax == 1) |
| 352 | dosmemget (__tb, sizeof (parent_vm_title), parent_vm_title); |
| 353 | } |
| 354 | } |
| 355 | else |
| 356 | { |
| 357 | dos_windows_version = 0; |
| 358 | Vdos_windows_version = Qnil; |
| 359 | } |
| 360 | #endif /* !HAVE_X_WINDOWS */ |
| 361 | |
| 362 | /* Without this, we never see hidden files. |
| 363 | Don't OR it with the previous value, so the value recorded at dump |
| 364 | time, possibly with `preserve-case' flags set, won't get through. */ |
| 365 | __opendir_flags = __OPENDIR_FIND_HIDDEN; |
| 366 | |
| 367 | #if __DJGPP_MINOR__ == 0 |
| 368 | /* Under LFN, preserve the case of files as recorded in the directory |
| 369 | (in DJGPP 2.01 and later this is automagically done by the library). */ |
| 370 | if (!NILP (Fmsdos_long_file_names ())) |
| 371 | __opendir_flags |= __OPENDIR_PRESERVE_CASE; |
| 372 | #endif /* __DJGPP_MINOR__ == 0 */ |
| 373 | } |
| 374 | \f |
| 375 | #ifndef HAVE_X_WINDOWS |
| 376 | |
| 377 | /* Emulation of some X window features from xfns.c and xfaces.c. */ |
| 378 | |
| 379 | /* Standard VGA colors, in the order of their standard numbering |
| 380 | in the default VGA palette. */ |
| 381 | static char *vga_colors[16] = { |
| 382 | "black", "blue", "green", "cyan", "red", "magenta", "brown", |
| 383 | "lightgray", "darkgray", "lightblue", "lightgreen", "lightcyan", |
| 384 | "lightred", "lightmagenta", "yellow", "white" |
| 385 | }; |
| 386 | |
| 387 | /* Given a color name, return its index, or -1 if not found. Note |
| 388 | that this only performs case-insensitive comparison against the |
| 389 | standard names. For anything more sophisticated, like matching |
| 390 | "gray" with "grey" or translating X color names into their MSDOS |
| 391 | equivalents, call the Lisp function Qtty_color_desc (defined |
| 392 | on lisp/term/tty-colors.el). */ |
| 393 | int |
| 394 | msdos_stdcolor_idx (const char *name) |
| 395 | { |
| 396 | int i; |
| 397 | |
| 398 | for (i = 0; i < sizeof (vga_colors) / sizeof (vga_colors[0]); i++) |
| 399 | if (xstrcasecmp (name, vga_colors[i]) == 0) |
| 400 | return i; |
| 401 | |
| 402 | return |
| 403 | strcmp (name, unspecified_fg) == 0 ? FACE_TTY_DEFAULT_FG_COLOR |
| 404 | : strcmp (name, unspecified_bg) == 0 ? FACE_TTY_DEFAULT_BG_COLOR |
| 405 | : FACE_TTY_DEFAULT_COLOR; |
| 406 | } |
| 407 | |
| 408 | /* Given a color index, return its standard name. */ |
| 409 | Lisp_Object |
| 410 | msdos_stdcolor_name (int idx) |
| 411 | { |
| 412 | extern Lisp_Object Qunspecified; |
| 413 | |
| 414 | if (idx == FACE_TTY_DEFAULT_FG_COLOR) |
| 415 | return build_string (unspecified_fg); |
| 416 | else if (idx == FACE_TTY_DEFAULT_BG_COLOR) |
| 417 | return build_string (unspecified_bg); |
| 418 | else if (idx >= 0 && idx < sizeof (vga_colors) / sizeof (vga_colors[0])) |
| 419 | return build_string (vga_colors[idx]); |
| 420 | else |
| 421 | return Qunspecified; /* meaning the default */ |
| 422 | } |
| 423 | |
| 424 | /* Support for features that are available when we run in a DOS box |
| 425 | on MS-Windows. */ |
| 426 | int |
| 427 | ms_windows_version (void) |
| 428 | { |
| 429 | return dos_windows_version; |
| 430 | } |
| 431 | |
| 432 | /* Set the title of the current virtual machine, to appear on |
| 433 | the caption bar of that machine's window. */ |
| 434 | |
| 435 | int |
| 436 | w95_set_virtual_machine_title (const char *title_string) |
| 437 | { |
| 438 | /* Only Windows 9X (version 4 and higher) support this function. */ |
| 439 | if (!NILP (Vdos_windows_version) |
| 440 | && (dos_windows_version & 0xff) >= 4) |
| 441 | { |
| 442 | _go32_dpmi_registers regs; |
| 443 | dosmemput (title_string, strlen (title_string) + 1, __tb); |
| 444 | regs.x.ax = 0x168e; |
| 445 | regs.x.dx = 1; |
| 446 | regs.x.es = __tb >> 4; |
| 447 | regs.x.di = __tb & 15; |
| 448 | regs.x.sp = regs.x.ss = regs.x.flags = 0; |
| 449 | _go32_dpmi_simulate_int (0x2f, ®s); |
| 450 | return regs.x.ax == 1; |
| 451 | } |
| 452 | return 0; |
| 453 | } |
| 454 | |
| 455 | /* Change the title of frame F to NAME. |
| 456 | If NAME is nil, use the frame name as the title. |
| 457 | |
| 458 | If Emacs is not run from a DOS box on Windows 9X, this only |
| 459 | sets the name in the frame struct, but has no other effects. */ |
| 460 | |
| 461 | void |
| 462 | x_set_title (struct frame *f, Lisp_Object name) |
| 463 | { |
| 464 | /* Don't change the title if it's already NAME. */ |
| 465 | if (EQ (name, f->title)) |
| 466 | return; |
| 467 | |
| 468 | update_mode_lines = 1; |
| 469 | |
| 470 | f->title = name; |
| 471 | |
| 472 | if (NILP (name)) |
| 473 | name = f->name; |
| 474 | |
| 475 | if (FRAME_MSDOS_P (f)) |
| 476 | { |
| 477 | BLOCK_INPUT; |
| 478 | w95_set_virtual_machine_title (SDATA (name)); |
| 479 | UNBLOCK_INPUT; |
| 480 | } |
| 481 | } |
| 482 | #endif /* !HAVE_X_WINDOWS */ |
| 483 | \f |
| 484 | DEFUN ("file-system-info", Ffile_system_info, Sfile_system_info, 1, 1, 0, |
| 485 | doc: /* Return storage information about the file system FILENAME is on. |
| 486 | Value is a list of floats (TOTAL FREE AVAIL), where TOTAL is the total |
| 487 | storage of the file system, FREE is the free storage, and AVAIL is the |
| 488 | storage available to a non-superuser. All 3 numbers are in bytes. |
| 489 | If the underlying system call fails, value is nil. */) |
| 490 | (Lisp_Object filename) |
| 491 | { |
| 492 | struct statfs stfs; |
| 493 | Lisp_Object encoded, value; |
| 494 | |
| 495 | CHECK_STRING (filename); |
| 496 | filename = Fexpand_file_name (filename, Qnil); |
| 497 | encoded = ENCODE_FILE (filename); |
| 498 | |
| 499 | if (statfs (SDATA (encoded), &stfs)) |
| 500 | value = Qnil; |
| 501 | else |
| 502 | value = list3 (make_float ((double) stfs.f_bsize * stfs.f_blocks), |
| 503 | make_float ((double) stfs.f_bsize * stfs.f_bfree), |
| 504 | make_float ((double) stfs.f_bsize * stfs.f_bavail)); |
| 505 | |
| 506 | return value; |
| 507 | } |
| 508 | \f |
| 509 | /* System depended enumeration of and access to system processes a-la |
| 510 | ps(1). Here, we only return info about the running Emacs process. |
| 511 | (There are no other processes on DOS, right?) */ |
| 512 | |
| 513 | Lisp_Object |
| 514 | list_system_processes (void) |
| 515 | { |
| 516 | Lisp_Object proclist = Qnil; |
| 517 | |
| 518 | proclist = Fcons (make_fixnum_or_float (getpid ()), proclist); |
| 519 | |
| 520 | return proclist; |
| 521 | } |
| 522 | |
| 523 | Lisp_Object |
| 524 | system_process_attributes (Lisp_Object pid) |
| 525 | { |
| 526 | int proc_id; |
| 527 | Lisp_Object attrs = Qnil; |
| 528 | |
| 529 | CHECK_NUMBER_OR_FLOAT (pid); |
| 530 | proc_id = FLOATP (pid) ? XFLOAT_DATA (pid) : XINT (pid); |
| 531 | |
| 532 | if (proc_id == getpid ()) |
| 533 | { |
| 534 | EMACS_INT uid, gid; |
| 535 | char *usr; |
| 536 | struct group *gr; |
| 537 | char cmd[FILENAME_MAX]; |
| 538 | char *cmdline = NULL, *p, *q; |
| 539 | size_t cmdline_size = 0; |
| 540 | int i; |
| 541 | Lisp_Object cmd_str, decoded_cmd, tem; |
| 542 | double pmem; |
| 543 | EXFUN (Fget_internal_run_time, 0); |
| 544 | #ifndef SYSTEM_MALLOC |
| 545 | extern unsigned long ret_lim_data (); |
| 546 | #endif |
| 547 | |
| 548 | uid = getuid (); |
| 549 | attrs = Fcons (Fcons (Qeuid, make_fixnum_or_float (uid)), attrs); |
| 550 | usr = getlogin (); |
| 551 | if (usr) |
| 552 | attrs = Fcons (Fcons (Quser, build_string (usr)), attrs); |
| 553 | gid = getgid (); |
| 554 | attrs = Fcons (Fcons (Qegid, make_fixnum_or_float (gid)), attrs); |
| 555 | gr = getgrgid (gid); |
| 556 | if (gr) |
| 557 | attrs = Fcons (Fcons (Qgroup, build_string (gr->gr_name)), attrs); |
| 558 | strcpy (cmd, basename (__crt0_argv[0])); |
| 559 | /* Command name is encoded in locale-coding-system; decode it. */ |
| 560 | cmd_str = make_unibyte_string (cmd, strlen (cmd)); |
| 561 | decoded_cmd = code_convert_string_norecord (cmd_str, |
| 562 | Vlocale_coding_system, 0); |
| 563 | attrs = Fcons (Fcons (Qcomm, decoded_cmd), attrs); |
| 564 | /* Pretend we have 0 as PPID. */ |
| 565 | attrs = Fcons (Fcons (Qppid, make_number (0)), attrs); |
| 566 | attrs = Fcons (Fcons (Qpgrp, pid), attrs); |
| 567 | attrs = Fcons (Fcons (Qttname, build_string ("/dev/tty")), attrs); |
| 568 | /* We are never idle! */ |
| 569 | tem = Fget_internal_run_time (); |
| 570 | attrs = Fcons (Fcons (Qtime, tem), attrs); |
| 571 | attrs = Fcons (Fcons (Qthcount, make_number (1)), attrs); |
| 572 | attrs = Fcons (Fcons (Qstart, |
| 573 | Fsymbol_value (intern ("before-init-time"))), |
| 574 | attrs); |
| 575 | attrs = Fcons (Fcons (Qvsize, |
| 576 | make_fixnum_or_float ((unsigned long)sbrk (0)/1024)), |
| 577 | attrs); |
| 578 | attrs = Fcons (Fcons (Qetime, tem), attrs); |
| 579 | #ifndef SYSTEM_MALLOC |
| 580 | /* ret_lim_data is on vm-limit.c, which is not compiled in under |
| 581 | SYSTEM_MALLOC. */ |
| 582 | pmem = (double)((unsigned long) sbrk (0)) / ret_lim_data () * 100.0; |
| 583 | if (pmem > 100) |
| 584 | #endif |
| 585 | pmem = 100; |
| 586 | attrs = Fcons (Fcons (Qpmem, make_float (pmem)), attrs); |
| 587 | /* Pass 1: Count how much storage we need. */ |
| 588 | for (i = 0; i < __crt0_argc; i++) |
| 589 | { |
| 590 | cmdline_size += strlen (__crt0_argv[i]) + 1; /* +1 for blank delim */ |
| 591 | if (strpbrk (__crt0_argv[i], " \t\n\r\v\f")) |
| 592 | { |
| 593 | cmdline_size += 2; |
| 594 | for (p = __crt0_argv[i]; *p; p++) |
| 595 | { |
| 596 | if (*p == '"') |
| 597 | cmdline_size++; |
| 598 | } |
| 599 | } |
| 600 | } |
| 601 | /* Pass 2: Allocate storage and concatenate argv[]. */ |
| 602 | cmdline = xmalloc (cmdline_size + 1); |
| 603 | for (i = 0, q = cmdline; i < __crt0_argc; i++) |
| 604 | { |
| 605 | if (strpbrk (__crt0_argv[i], " \t\n\r\v\f")) |
| 606 | { |
| 607 | *q++ = '"'; |
| 608 | for (p = __crt0_argv[i]; *p; p++) |
| 609 | { |
| 610 | if (*p == '\"') |
| 611 | *q++ = '\\'; |
| 612 | *q++ = *p; |
| 613 | } |
| 614 | *q++ = '"'; |
| 615 | } |
| 616 | else |
| 617 | { |
| 618 | strcpy (q, __crt0_argv[i]); |
| 619 | q += strlen (__crt0_argv[i]); |
| 620 | } |
| 621 | *q++ = ' '; |
| 622 | } |
| 623 | /* Remove the trailing blank. */ |
| 624 | if (q > cmdline) |
| 625 | q[-1] = '\0'; |
| 626 | |
| 627 | /* Command line is encoded in locale-coding-system; decode it. */ |
| 628 | cmd_str = make_unibyte_string (cmdline, strlen (cmdline)); |
| 629 | decoded_cmd = code_convert_string_norecord (cmd_str, |
| 630 | Vlocale_coding_system, 0); |
| 631 | xfree (cmdline); |
| 632 | attrs = Fcons (Fcons (Qargs, decoded_cmd), attrs); |
| 633 | } |
| 634 | |
| 635 | return attrs; |
| 636 | } |
| 637 | \f |
| 638 | void |
| 639 | dos_cleanup (void) |
| 640 | { |
| 641 | struct tty_display_info *tty; |
| 642 | |
| 643 | #ifndef HAVE_X_WINDOWS |
| 644 | restore_parent_vm_title (); |
| 645 | #endif |
| 646 | /* Make sure the termscript file is committed, in case we are |
| 647 | crashing and some vital info was written there. */ |
| 648 | if (FRAMEP (selected_frame)) |
| 649 | { |
| 650 | struct frame *sf = XFRAME (selected_frame); |
| 651 | |
| 652 | if (FRAME_LIVE_P (sf) |
| 653 | && (FRAME_MSDOS_P (sf) || FRAME_TERMCAP_P (sf))) |
| 654 | { |
| 655 | tty = CURTTY (); |
| 656 | if (tty->termscript) |
| 657 | { |
| 658 | fflush (tty->termscript); |
| 659 | fsync (fileno (tty->termscript)); |
| 660 | } |
| 661 | } |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | /* |
| 666 | * Define everything |
| 667 | */ |
| 668 | void |
| 669 | syms_of_dosfns (void) |
| 670 | { |
| 671 | defsubr (&Sint86); |
| 672 | defsubr (&Sdos_memget); |
| 673 | defsubr (&Sdos_memput); |
| 674 | defsubr (&Smsdos_mouse_init); |
| 675 | defsubr (&Smsdos_mouse_enable); |
| 676 | defsubr (&Smsdos_set_keyboard); |
| 677 | defsubr (&Sinsert_startup_screen); |
| 678 | defsubr (&Smsdos_mouse_disable); |
| 679 | defsubr (&Sfile_system_info); |
| 680 | #ifndef HAVE_X_WINDOWS |
| 681 | defsubr (&Smsdos_mouse_p); |
| 682 | #endif |
| 683 | |
| 684 | DEFVAR_INT ("dos-country-code", dos_country_code, |
| 685 | doc: /* The country code returned by Dos when Emacs was started. |
| 686 | Usually this is the international telephone prefix. */); |
| 687 | |
| 688 | DEFVAR_INT ("dos-codepage", dos_codepage, |
| 689 | doc: /* The codepage active when Emacs was started. |
| 690 | The following are known: |
| 691 | 437 United States |
| 692 | 850 Multilingual (Latin I) |
| 693 | 852 Slavic (Latin II) |
| 694 | 857 Turkish |
| 695 | 860 Portugal |
| 696 | 861 Iceland |
| 697 | 863 Canada (French) |
| 698 | 865 Norway/Denmark */); |
| 699 | |
| 700 | DEFVAR_INT ("dos-timezone-offset", dos_timezone_offset, |
| 701 | doc: /* The current timezone offset to UTC in minutes. |
| 702 | Implicitly modified when the TZ variable is changed. */); |
| 703 | |
| 704 | DEFVAR_LISP ("dos-version", Vdos_version, |
| 705 | doc: /* The (MAJOR . MINOR) Dos version (subject to modification with setver). */); |
| 706 | |
| 707 | #ifndef HAVE_X_WINDOWS |
| 708 | DEFVAR_LISP ("dos-windows-version", Vdos_windows_version, |
| 709 | doc: /* The (MAJOR . MINOR) Windows version for DOS session on MS-Windows. */); |
| 710 | #endif |
| 711 | |
| 712 | DEFVAR_LISP ("dos-display-scancodes", Vdos_display_scancodes, |
| 713 | doc: /* Whether DOS raw keyboard events are displayed as you type. |
| 714 | When non-nil, the keyboard scan-codes are displayed at the bottom right |
| 715 | corner of the display (typically at the end of the mode line). |
| 716 | The output format is: scan code:char code*modifiers. */); |
| 717 | |
| 718 | Vdos_display_scancodes = Qnil; |
| 719 | |
| 720 | DEFVAR_INT ("dos-hyper-key", dos_hyper_key, |
| 721 | doc: /* If set to 1, use right ALT key as hyper key. |
| 722 | If set to 2, use right CTRL key as hyper key. */); |
| 723 | dos_hyper_key = 0; |
| 724 | |
| 725 | DEFVAR_INT ("dos-super-key", dos_super_key, |
| 726 | doc: /* If set to 1, use right ALT key as super key. |
| 727 | If set to 2, use right CTRL key as super key. */); |
| 728 | dos_super_key = 0; |
| 729 | |
| 730 | DEFVAR_INT ("dos-keypad-mode", dos_keypad_mode, |
| 731 | doc: /* Controls what key code is returned by a key in the numeric keypad. |
| 732 | The `numlock ON' action is only taken if no modifier keys are pressed. |
| 733 | The value is an integer constructed by adding the following bits together: |
| 734 | |
| 735 | 0x00 Digit key returns digit (if numlock ON) |
| 736 | 0x01 Digit key returns kp-digit (if numlock ON) |
| 737 | 0x02 Digit key returns M-digit (if numlock ON) |
| 738 | 0x03 Digit key returns edit key (if numlock ON) |
| 739 | |
| 740 | 0x00 Grey key returns char (if numlock ON) |
| 741 | 0x04 Grey key returns kp-key (if numlock ON) |
| 742 | |
| 743 | 0x00 Digit key returns digit (if numlock OFF) |
| 744 | 0x10 Digit key returns kp-digit (if numlock OFF) |
| 745 | 0x20 Digit key returns M-digit (if numlock OFF) |
| 746 | 0x30 Digit key returns edit key (if numlock OFF) |
| 747 | |
| 748 | 0x00 Grey key returns char (if numlock OFF) |
| 749 | 0x40 Grey key returns kp-key (if numlock OFF) |
| 750 | |
| 751 | 0x200 ALT-0..ALT-9 in top-row produces shifted codes. */); |
| 752 | dos_keypad_mode = 0x75; |
| 753 | |
| 754 | DEFVAR_INT ("dos-keyboard-layout", dos_keyboard_layout, |
| 755 | doc: /* Contains the country code for the current keyboard layout. |
| 756 | Use msdos-set-keyboard to select another keyboard layout. */); |
| 757 | dos_keyboard_layout = 1; /* US */ |
| 758 | |
| 759 | DEFVAR_INT ("dos-decimal-point", dos_decimal_point, |
| 760 | doc: /* The character to produce when kp-decimal key is pressed. |
| 761 | If non-zero, this variable contains the character to be returned when the |
| 762 | decimal point key in the numeric keypad is pressed when Num Lock is on. |
| 763 | If zero, the decimal point key returns the country code specific value. */); |
| 764 | dos_decimal_point = 0; |
| 765 | } |
| 766 | #endif /* MSDOS */ |
| 767 | |