usr.sbin/bluetooth/bthidd/kbd.c

   1 /*
   2  * kbd.c
   3  *
   4  * Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  * $Id: kbd.c,v 1.2 2004/11/17 21:59:42 max Exp $
  29  * $FreeBSD$
  30  */
  31
  32 #include <sys/consio.h>
  33 #include <sys/ioctl.h>
  34 #include <sys/kbio.h>
  35 #include <sys/queue.h>
  36 #include <sys/wait.h>
  37 #include <assert.h>
  38 #include <bluetooth.h>
  39 #include <errno.h>
  40 #include <fcntl.h>
  41 #include <limits.h>
  42 #include <stdarg.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <string.h>
  46 #include <syslog.h>
  47 #include <unistd.h>
  48 #include "bthidd.h"
  49 #include "kbd.h"
  50
  51 static void     kbd_write(bitstr_t *m, int fb, int make, int fd);
  52 static int      kbd_xlate(int code, int make, int *b, int const *eob);
  53
  54 /*
  55  * HID code to PS/2 set 1 code translation table.
  56  *
  57  * http://www.microsoft.com/whdc/device/input/Scancode.mspx
  58  *
  59  * The table only contains "make" (key pressed) codes.
  60  * The "break" (key released) code is generated as "make" | 0x80
  61  */
  62
  63 #define E0PREFIX        (1 << 31)
  64 #define NOBREAK         (1 << 30)
  65 #define CODEMASK        (~(E0PREFIX|NOBREAK))
  66
  67 static int const        x[] =
  68 {
  69 /*==================================================*/
  70 /* Name                   HID code    Make     Break*/
  71 /*==================================================*/
  72 /* No Event                     00 */ -1,   /* None */
  73 /* Overrun Error                01 */ NOBREAK|0xFF, /* None */
  74 /* POST Fail                    02 */ NOBREAK|0xFC, /* None */
  75 /* ErrorUndefined               03 */ -1,   /* Unassigned */
  76 /* a A                          04 */ 0x1E, /* 9E */
  77 /* b B                          05 */ 0x30, /* B0 */
  78 /* c C                          06 */ 0x2E, /* AE */
  79 /* d D                          07 */ 0x20, /* A0 */
  80 /* e E                          08 */ 0x12, /* 92 */
  81 /* f F                          09 */ 0x21, /* A1 */
  82 /* g G                          0A */ 0x22, /* A2 */
  83 /* h H                          0B */ 0x23, /* A3 */
  84 /* i I                          0C */ 0x17, /* 97 */
  85 /* j J                          0D */ 0x24, /* A4 */
  86 /* k K                          0E */ 0x25, /* A5 */
  87 /* l L                          0F */ 0x26, /* A6 */
  88 /* m M                          10 */ 0x32, /* B2 */
  89 /* n N                          11 */ 0x31, /* B1 */
  90 /* o O                          12 */ 0x18, /* 98 */
  91 /* p P                          13 */ 0x19, /* 99 */
  92 /* q Q                          14 */ 0x10, /* 90 */
  93 /* r R                          15 */ 0x13, /* 93 */
  94 /* s S                          16 */ 0x1F, /* 9F */
  95 /* t T                          17 */ 0x14, /* 94 */
  96 /* u U                          18 */ 0x16, /* 96 */
  97 /* v V                          19 */ 0x2F, /* AF */
  98 /* w W                          1A */ 0x11, /* 91 */
  99 /* x X                          1B */ 0x2D, /* AD */
 100 /* y Y                          1C */ 0x15, /* 95 */
 101 /* z Z                          1D */ 0x2C, /* AC */
 102 /* 1 !                          1E */ 0x02, /* 82 */
 103 /* 2 @                          1F */ 0x03, /* 83 */
 104 /* 3 #                          20 */ 0x04, /* 84 */
 105 /* 4 $                          21 */ 0x05, /* 85 */
 106 /* 5 %                          22 */ 0x06, /* 86 */
 107 /* 6 ^                          23 */ 0x07, /* 87 */
 108 /* 7 &                          24 */ 0x08, /* 88 */
 109 /* 8 *                          25 */ 0x09, /* 89 */
 110 /* 9 (                          26 */ 0x0A, /* 8A */
 111 /* 0 )                          27 */ 0x0B, /* 8B */
 112 /* Return                       28 */ 0x1C, /* 9C */
 113 /* Escape                       29 */ 0x01, /* 81 */
 114 /* Backspace                    2A */ 0x0E, /* 8E */
 115 /* Tab                          2B */ 0x0F, /* 8F */
 116 /* Space                        2C */ 0x39, /* B9 */
 117 /* - _                          2D */ 0x0C, /* 8C */
 118 /* = +                          2E */ 0x0D, /* 8D */
 119 /* [ {                          2F */ 0x1A, /* 9A */
 120 /* ] }                          30 */ 0x1B, /* 9B */
 121 /* \ |                          31 */ 0x2B, /* AB */
 122 /* Europe 1                     32 */ 0x2B, /* AB */
 123 /* ; :                          33 */ 0x27, /* A7 */
 124 /* " '                          34 */ 0x28, /* A8 */
 125 /* ` ~                          35 */ 0x29, /* A9 */
 126 /* comma <                      36 */ 0x33, /* B3 */
 127 /* . >                          37 */ 0x34, /* B4 */
 128 /* / ?                          38 */ 0x35, /* B5 */
 129 /* Caps Lock                    39 */ 0x3A, /* BA */
 130 /* F1                           3A */ 0x3B, /* BB */
 131 /* F2                           3B */ 0x3C, /* BC */
 132 /* F3                           3C */ 0x3D, /* BD */
 133 /* F4                           3D */ 0x3E, /* BE */
 134 /* F5                           3E */ 0x3F, /* BF */
 135 /* F6                           3F */ 0x40, /* C0 */
 136 /* F7                           40 */ 0x41, /* C1 */
 137 /* F8                           41 */ 0x42, /* C2 */
 138 /* F9                           42 */ 0x43, /* C3 */
 139 /* F10                          43 */ 0x44, /* C4 */
 140 /* F11                          44 */ 0x57, /* D7 */
 141 /* F12                          45 */ 0x58, /* D8 */
 142 /* Print Screen                 46 */ E0PREFIX|37, /* E0 B7 */
 143 /* Scroll Lock                  47 */ 0x46, /* C6 */
 144 #if 0
 145 /* Break (Ctrl-Pause)           48 */ E0 46 E0 C6, /* None */
 146 /* Pause                        48 */ E1 1D 45 E1 9D C5, /* None */
 147 #else
 148 /* Break (Ctrl-Pause)/Pause     48 */ NOBREAK /* Special case */, /* None */
 149 #endif
 150 /* Insert                       49 */ E0PREFIX|0x52, /* E0 D2 */
 151 /* Home                         4A */ E0PREFIX|0x47, /* E0 C7 */
 152 /* Page Up                      4B */ E0PREFIX|0x49, /* E0 C9 */
 153 /* Delete                       4C */ E0PREFIX|0x53, /* E0 D3 */
 154 /* End                          4D */ E0PREFIX|0x4F, /* E0 CF */
 155 /* Page Down                    4E */ E0PREFIX|0x51, /* E0 D1 */
 156 /* Right Arrow                  4F */ E0PREFIX|0x4D, /* E0 CD */
 157 /* Left Arrow                   50 */ E0PREFIX|0x4B, /* E0 CB */
 158 /* Down Arrow                   51 */ E0PREFIX|0x50, /* E0 D0 */
 159 /* Up Arrow                     52 */ E0PREFIX|0x48, /* E0 C8 */
 160 /* Num Lock                     53 */ 0x45, /* C5 */
 161 /* Keypad /                     54 */ E0PREFIX|0x35, /* E0 B5 */
 162 /* Keypad *                     55 */ 0x37, /* B7 */
 163 /* Keypad -                     56 */ 0x4A, /* CA */
 164 /* Keypad +                     57 */ 0x4E, /* CE */
 165 /* Keypad Enter                 58 */ E0PREFIX|0x1C, /* E0 9C */
 166 /* Keypad 1 End                 59 */ 0x4F, /* CF */
 167 /* Keypad 2 Down                5A */ 0x50, /* D0 */
 168 /* Keypad 3 PageDn              5B */ 0x51, /* D1 */
 169 /* Keypad 4 Left                5C */ 0x4B, /* CB */
 170 /* Keypad 5                     5D */ 0x4C, /* CC */
 171 /* Keypad 6 Right               5E */ 0x4D, /* CD */
 172 /* Keypad 7 Home                5F */ 0x47, /* C7 */
 173 /* Keypad 8 Up                  60 */ 0x48, /* C8 */
 174 /* Keypad 9 PageUp              61 */ 0x49, /* C9 */
 175 /* Keypad 0 Insert              62 */ 0x52, /* D2 */
 176 /* Keypad . Delete              63 */ 0x53, /* D3 */
 177 /* Europe 2                     64 */ 0x56, /* D6 */
 178 /* App                          65 */ E0PREFIX|0x5D, /* E0 DD */
 179 /* Keyboard Power               66 */ E0PREFIX|0x5E, /* E0 DE */
 180 /* Keypad =                     67 */ 0x59, /* D9 */
 181 /* F13                          68 */ 0x64, /* E4 */
 182 /* F14                          69 */ 0x65, /* E5 */
 183 /* F15                          6A */ 0x66, /* E6 */
 184 /* F16                          6B */ 0x67, /* E7 */
 185 /* F17                          6C */ 0x68, /* E8 */
 186 /* F18                          6D */ 0x69, /* E9 */
 187 /* F19                          6E */ 0x6A, /* EA */
 188 /* F20                          6F */ 0x6B, /* EB */
 189 /* F21                          70 */ 0x6C, /* EC */
 190 /* F22                          71 */ 0x6D, /* ED */
 191 /* F23                          72 */ 0x6E, /* EE */
 192 /* F24                          73 */ 0x76, /* F6 */
 193 /* Keyboard Execute             74 */ -1,   /* Unassigned */
 194 /* Keyboard Help                75 */ -1,   /* Unassigned */
 195 /* Keyboard Menu                76 */ -1,   /* Unassigned */
 196 /* Keyboard Select              77 */ -1,   /* Unassigned */
 197 /* Keyboard Stop                78 */ -1,   /* Unassigned */
 198 /* Keyboard Again               79 */ -1,   /* Unassigned */
 199 /* Keyboard Undo                7A */ -1,   /* Unassigned */
 200 /* Keyboard Cut                 7B */ -1,   /* Unassigned */
 201 /* Keyboard Copy                7C */ -1,   /* Unassigned */
 202 /* Keyboard Paste               7D */ -1,   /* Unassigned */
 203 /* Keyboard Find                7E */ -1,   /* Unassigned */
 204 /* Keyboard Mute                7F */ -1,   /* Unassigned */
 205 /* Keyboard Volume Up           80 */ -1,   /* Unassigned */
 206 /* Keyboard Volume Dn           81 */ -1,   /* Unassigned */
 207 /* Keyboard Locking Caps Lock   82 */ -1,   /* Unassigned */
 208 /* Keyboard Locking Num Lock    83 */ -1,   /* Unassigned */
 209 /* Keyboard Locking Scroll Lock 84 */ -1,   /* Unassigned */
 210 /* Keypad comma                 85 */ 0x7E, /* FE */
 211 /* Keyboard Equal Sign          86 */ -1,   /* Unassigned */
 212 /* Keyboard Int'l 1             87 */ 0x73, /* F3 */
 213 /* Keyboard Int'l 2             88 */ 0x70, /* F0 */
 214 /* Keyboard Int'l 2             89 */ 0x7D, /* FD */
 215 /* Keyboard Int'l 4             8A */ 0x79, /* F9 */
 216 /* Keyboard Int'l 5             8B */ 0x7B, /* FB */
 217 /* Keyboard Int'l 6             8C */ 0x5C, /* DC */
 218 /* Keyboard Int'l 7             8D */ -1,   /* Unassigned */
 219 /* Keyboard Int'l 8             8E */ -1,   /* Unassigned */
 220 /* Keyboard Int'l 9             8F */ -1,   /* Unassigned */
 221 /* Keyboard Lang 1              90 */ NOBREAK|0xF2, /* None */
 222 /* Keyboard Lang 2              91 */ NOBREAK|0xF1, /* None */
 223 /* Keyboard Lang 3              92 */ 0x78, /* F8 */
 224 /* Keyboard Lang 4              93 */ 0x77, /* F7 */
 225 /* Keyboard Lang 5              94 */ 0x76, /* F6 */
 226 /* Keyboard Lang 6              95 */ -1,   /* Unassigned */
 227 /* Keyboard Lang 7              96 */ -1,   /* Unassigned */
 228 /* Keyboard Lang 8              97 */ -1,   /* Unassigned */
 229 /* Keyboard Lang 9              98 */ -1,   /* Unassigned */
 230 /* Keyboard Alternate Erase     99 */ -1,   /* Unassigned */
 231 /* Keyboard SysReq/Attention    9A */ -1,   /* Unassigned */
 232 /* Keyboard Cancel              9B */ -1,   /* Unassigned */
 233 /* Keyboard Clear               9C */ -1,   /* Unassigned */
 234 /* Keyboard Prior               9D */ -1,   /* Unassigned */
 235 /* Keyboard Return              9E */ -1,   /* Unassigned */
 236 /* Keyboard Separator           9F */ -1,   /* Unassigned */
 237 /* Keyboard Out                 A0 */ -1,   /* Unassigned */
 238 /* Keyboard Oper                A1 */ -1,   /* Unassigned */
 239 /* Keyboard Clear/Again         A2 */ -1,   /* Unassigned */
 240 /* Keyboard CrSel/Props         A3 */ -1,   /* Unassigned */
 241 /* Keyboard ExSel               A4 */ -1,   /* Unassigned */
 242 /* Reserved                     A5 */ -1,   /* Reserved */
 243 /* Reserved                     A6 */ -1,   /* Reserved */
 244 /* Reserved                     A7 */ -1,   /* Reserved */
 245 /* Reserved                     A8 */ -1,   /* Reserved */
 246 /* Reserved                     A9 */ -1,   /* Reserved */
 247 /* Reserved                     AA */ -1,   /* Reserved */
 248 /* Reserved                     AB */ -1,   /* Reserved */
 249 /* Reserved                     AC */ -1,   /* Reserved */
 250 /* Reserved                     AD */ -1,   /* Reserved */
 251 /* Reserved                     AE */ -1,   /* Reserved */
 252 /* Reserved                     AF */ -1,   /* Reserved */
 253 /* Reserved                     B0 */ -1,   /* Reserved */
 254 /* Reserved                     B1 */ -1,   /* Reserved */
 255 /* Reserved                     B2 */ -1,   /* Reserved */
 256 /* Reserved                     B3 */ -1,   /* Reserved */
 257 /* Reserved                     B4 */ -1,   /* Reserved */
 258 /* Reserved                     B5 */ -1,   /* Reserved */
 259 /* Reserved                     B6 */ -1,   /* Reserved */
 260 /* Reserved                     B7 */ -1,   /* Reserved */
 261 /* Reserved                     B8 */ -1,   /* Reserved */
 262 /* Reserved                     B9 */ -1,   /* Reserved */
 263 /* Reserved                     BA */ -1,   /* Reserved */
 264 /* Reserved                     BB */ -1,   /* Reserved */
 265 /* Reserved                     BC */ -1,   /* Reserved */
 266 /* Reserved                     BD */ -1,   /* Reserved */
 267 /* Reserved                     BE */ -1,   /* Reserved */
 268 /* Reserved                     BF */ -1,   /* Reserved */
 269 /* Reserved                     C0 */ -1,   /* Reserved */
 270 /* Reserved                     C1 */ -1,   /* Reserved */
 271 /* Reserved                     C2 */ -1,   /* Reserved */
 272 /* Reserved                     C3 */ -1,   /* Reserved */
 273 /* Reserved                     C4 */ -1,   /* Reserved */
 274 /* Reserved                     C5 */ -1,   /* Reserved */
 275 /* Reserved                     C6 */ -1,   /* Reserved */
 276 /* Reserved                     C8 */ -1,   /* Reserved */
 277 /* Reserved                     C9 */ -1,   /* Reserved */
 278 /* Reserved                     CA */ -1,   /* Reserved */
 279 /* Reserved                     CB */ -1,   /* Reserved */
 280 /* Reserved                     CC */ -1,   /* Reserved */
 281 /* Reserved                     CD */ -1,   /* Reserved */
 282 /* Reserved                     CE */ -1,   /* Reserved */
 283 /* Reserved                     CF */ -1,   /* Reserved */
 284 /* Reserved                     D0 */ -1,   /* Reserved */
 285 /* Reserved                     D1 */ -1,   /* Reserved */
 286 /* Reserved                     D2 */ -1,   /* Reserved */
 287 /* Reserved                     D3 */ -1,   /* Reserved */
 288 /* Reserved                     D4 */ -1,   /* Reserved */
 289 /* Reserved                     D5 */ -1,   /* Reserved */
 290 /* Reserved                     D6 */ -1,   /* Reserved */
 291 /* Reserved                     D8 */ -1,   /* Reserved */
 292 /* Reserved                     D9 */ -1,   /* Reserved */
 293 /* Reserved                     DA */ -1,   /* Reserved */
 294 /* Reserved                     DB */ -1,   /* Reserved */
 295 /* Reserved                     DC */ -1,   /* Reserved */
 296 /* Reserved                     DD */ -1,   /* Reserved */
 297 /* Reserved                     DE */ -1,   /* Reserved */
 298 /* Reserved                     DF */ -1,   /* Reserved */
 299 /* Left Control                 E0 */ 0x1D, /* 9D */
 300 /* Left Control                 E0 */ 0x1D, /* 9D */
 301 /* Left Shift                   E1 */ 0x2A, /* AA */
 302 /* Left Alt                     E2 */ 0x38, /* B8 */
 303 /* Left GUI                     E3 */ E0PREFIX|0x5B, /* E0 DB */
 304 /* Right Control                E4 */ E0PREFIX|0x1D, /* E0 9D */
 305 /* Right Shift                  E5 */ 0x36, /* B6 */
 306 /* Right Alt                    E6 */ E0PREFIX|0x38, /* E0 B8 */
 307 /* Right GUI                    E7 */ E0PREFIX|0x5C  /* E0 DC */
 308 };
 309
 310 #define xsize   (sizeof(x)/sizeof(x[0]))
 311
 312 /*
 313  * Get a max HID keycode (aligned)
 314  */
 315
 316 int
 317 kbd_maxkey(void)
 318 {
 319         return (xsize);
 320 }
 321
 322 /*
 323  * Process keys
 324  */
 325
 326 int
 327 kbd_process_keys(bthid_session_p s)
 328 {
 329         bitstr_t        r[bitstr_size(xsize)];
 330         int             f0, f1, i;
 331
 332         assert(s != NULL);
 333         assert(s->srv != NULL);
 334
 335         bit_ffs(s->srv->keys, xsize, &f0);
 336         bit_ffs(s->keys, xsize, &f1);
 337
 338         if (f0 == -1) {
 339                 /* all keys are released, no keys pressed */
 340                 if (f1 != -1) {
 341                         kbd_write(s->keys, f1, 0, s->srv->vkbd);
 342                         memset(s->keys, 0, bitstr_size(xsize));
 343                 }
 344
 345                 return (0);
 346         }
 347
 348         if (f1 == -1) {
 349                 /* some keys got pressed, no keys released */
 350                 if (f0 != -1) {
 351                         memcpy(s->keys, s->srv->keys, bitstr_size(xsize));
 352                         kbd_write(s->keys, f0, 1, s->srv->vkbd);
 353                         memset(s->srv->keys, 0, bitstr_size(xsize));
 354                 }
 355
 356                 return (0);
 357         }
 358
 359         /* some keys got pressed, some keys got released */
 360         memset(r, 0, bitstr_size(xsize));
 361
 362         for (i = f1; i < xsize; i++) {
 363                 if (bit_test(s->keys, i)) {
 364                         if (!bit_test(s->srv->keys, i)) {
 365                                 bit_clear(s->keys, i);
 366                                 bit_set(r, i);
 367                         } else
 368                                 bit_clear(s->srv->keys, i);
 369                 }
 370         }
 371
 372         for (i = f0; i < xsize; i++) {
 373                 if (bit_test(s->srv->keys, i)) {
 374                         if (!bit_test(s->keys, i))
 375                                 bit_set(s->keys, i);
 376                         else
 377                                 bit_clear(s->srv->keys, i);
 378                 }
 379         }
 380
 381         bit_ffs(r, xsize, &f0);
 382         bit_ffs(s->srv->keys, xsize, &f1);
 383
 384         if (f0 > 0)
 385                 kbd_write(r, f0, 0, s->srv->vkbd);
 386
 387         if (f1 > 0) {
 388                 kbd_write(s->srv->keys, f1, 1, s->srv->vkbd);
 389                 memset(s->srv->keys, 0, bitstr_size(xsize));
 390         }
 391
 392         return (0);
 393 }
 394
 395 /*
 396  * Get current keyboard index (fd version)
 397  */
 398
 399 int
 400 kbd_get_index_fd(int fd)
 401 {
 402         keyboard_info_t info;
 403
 404         return ((ioctl(fd, KDGKBINFO, &info) < 0)? -1 : info.kb_index);
 405 }
 406
 407 /*
 408  * Get current keyboard index (device node version)
 409  */
 410
 411 int
 412 kbd_get_index(char const *device)
 413 {
 414         int     fd, index;
 415
 416         fd = open(device, O_RDONLY);
 417         if (fd < 0)
 418                 return (-1);
 419
 420         index = kbd_get_index_fd(fd);
 421
 422         close(fd);
 423
 424         return (index);
 425 }
 426
 427 /*
 428  * Switch keyboards. Execute external script to switch keyboards. The keyboard
 429  * index will be passed to the script in the first argument (argv[1]). We use
 430  * external script here to allow user to customize his/her wireless keyboard,
 431  * i.e. set mapping etc. In theory, all parameters could be picked up from the
 432  * rc.conf.
 433  */
 434
 435 int
 436 kbd_switch(char const *script, int index)
 437 {
 438         pid_t   pid;
 439         int     status;
 440
 441         if (script == NULL) {
 442                 syslog(LOG_NOTICE, "Could not switch keyboards. " \
 443                         "Switch script is not defined");
 444                 return (-1);
 445         }
 446
 447         if (access(script, X_OK) < 0) {
 448                 syslog(LOG_ERR, "The %s is not executable. %s (%d)",
 449                         script, strerror(errno), errno);
 450                 return (-1);
 451         }
 452
 453         pid = fork();
 454
 455         if (pid == (pid_t) -1) {
 456                 syslog(LOG_ERR, "Could not create process for %s. %s (%d)",
 457                         script, strerror(errno), errno);
 458                 return (-1);
 459         }
 460
 461         if (pid == 0) {
 462                 char     arg[16];
 463                 char    *argv[3] = { (char *) script, arg, NULL };
 464
 465                 snprintf(arg, sizeof(arg), "%d", index);
 466                 execv(script, argv);
 467
 468                 syslog(LOG_ERR, "Could not execute '%s %d'. %s (%d)",
 469                         script, index, strerror(errno), errno);
 470
 471                 exit(1);
 472         }
 473
 474         if (waitpid(pid, &status, 0) < 0) {
 475                 syslog(LOG_ERR, "Could not waitpid for %s. %s (%d)",
 476                         script, strerror(errno), errno);
 477                 return (-1);
 478         }
 479
 480         if (WIFEXITED(status) && WEXITSTATUS(status)) {
 481                 syslog(LOG_ERR, "External command '%s %d' failed, exit code %d",
 482                         script, index, WEXITSTATUS(status));
 483                 return (-1);
 484         }
 485
 486         return (0);
 487 }
 488
 489 /*
 490  * Translate given keymap and write keyscodes
 491  */
 492
 493 static void
 494 kbd_write(bitstr_t *m, int fb, int make, int fd)
 495 {
 496         int     i, *b, *eob, n, buf[64];
 497
 498         b = buf;
 499         eob = b + sizeof(buf)/sizeof(buf[0]);
 500         i = fb;
 501
 502         while (i < xsize) {
 503                 if (bit_test(m, i)) {
 504                         n = kbd_xlate(i, make, b, eob);
 505                         if (n == -1) {
 506                                 write(fd, buf, (b - buf) * sizeof(buf[0]));
 507                                 b = buf;
 508                                 continue;
 509                         }
 510
 511                         b += n;
 512                 }
 513
 514                 i ++;
 515         }
 516
 517         if (b != buf)
 518                 write(fd, buf, (b - buf) * sizeof(buf[0]));
 519 }
 520
 521
 522 /*
 523  * Translate HID code into PS/2 code and put codes into buffer b.
 524  * Returns the number of codes put in b. Return -1 if buffer has not
 525  * enough space.
 526  */
 527
 528 #undef  PUT
 529 #define PUT(c, n, b, eob)       \
 530 do {                            \
 531         if ((b) >= (eob))       \
 532                 return (-1);    \
 533         *(b) = (c);             \
 534         (b) ++;                 \
 535         (n) ++;                 \
 536 } while (0)
 537
 538 static int
 539 kbd_xlate(int code, int make, int *b, int const *eob)
 540 {
 541         int     c, n;
 542
 543         n = 0;
 544
 545         if (code >= xsize)
 546                 return (0); /* HID code is not in the table */
 547
 548         /* Handle special case - Pause/Break */
 549         if (code == 0x48) {
 550                 if (!make)
 551                         return (0); /* No break code */
 552
 553 #if 0
 554 XXX FIXME
 555                 if (ctrl_is_pressed) {
 556                         /* Break (Ctrl-Pause) */
 557                         PUT(0xe0, n, b, eob);
 558                         PUT(0x46, n, b, eob);
 559                         PUT(0xe0, n, b, eob);
 560                         PUT(0xc6, n, b, eob);
 561                 } else {
 562                         /* Pause */
 563                         PUT(0xe1, n, b, eob);
 564                         PUT(0x1d, n, b, eob);
 565                         PUT(0x45, n, b, eob);
 566                         PUT(0xe1, n, b, eob);
 567                         PUT(0x9d, n, b, eob);
 568                         PUT(0xc5, n, b, eob);
 569                 }
 570 #endif
 571
 572                 return (n);
 573         }
 574
 575         if ((c = x[code]) == -1)
 576                 return (0); /* HID code translation is not defined */
 577
 578         if (make) {
 579                 if (c & E0PREFIX)
 580                         PUT(0xe0, n, b, eob);
 581
 582                 PUT((c & CODEMASK), n, b, eob);
 583         } else if (!(c & NOBREAK)) {
 584                 if (c & E0PREFIX)
 585                         PUT(0xe0, n, b, eob);
 586
 587                 PUT((0x80|(c & CODEMASK)), n, b, eob);
 588         }
 589
 590         return (n);
 591 }
 592