usr.sbin/apm/apm.c

   1 /*
   2  * apm / zzz    APM BIOS utility for FreeBSD
   3  *
   4  * Copyright (C) 1994-1996 by Tatsumi Hosokawa <hosokawa@jp.FreeBSD.org>
   5  *
   6  * This software may be used, modified, copied, distributed, and sold,
   7  * in both source and binary form provided that the above copyright and
   8  * these terms are retained. Under no circumstances is the author
   9  * responsible for the proper functioning of this software, nor does
  10  * the author assume any responsibility for damages incurred with its
  11  * use.
  12  *
  13  * Sep., 1994   Implemented on FreeBSD 1.1.5.1R (Toshiba AVS001WD)
  14  */
  15
  16 #ifndef lint
  17 static const char rcsid[] =
  18   "$FreeBSD: src/usr.sbin/apm/apm.c,v 1.22.2.6 2003/04/29 08:53:04 maxim Exp $";
  19 #endif /* not lint */
  20
  21 #include <sys/file.h>
  22 #include <sys/ioctl.h>
  23 #include <sys/types.h>
  24 #include <sys/sysctl.h>
  25
  26 #include <machine/apm_bios.h>
  27
  28 #include <err.h>
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <sys/file.h>
  33 #include <sys/ioctl.h>
  34 #include <time.h>
  35 #include <unistd.h>
  36
  37 #define APMDEV  "/dev/apm"
  38
  39 #define xh(a)   (((a) & 0xff00) >> 8)
  40 #define xl(a)   ((a) & 0xff)
  41 #define APMERR(a) xh(a)
  42
  43 int cmos_wall = 0;      /* True when wall time is in cmos clock, else UTC */
  44
  45 void
  46 usage()
  47 {
  48         fprintf(stderr, "%s\n%s\n",
  49                 "usage: apm [-ablstzZ] [-d enable ] [ -e enable ] "
  50                 "[ -h enable ] [-r delta]",
  51                 "       zzz");
  52         exit(1);
  53 }
  54
  55 /*
  56  * Return 1 for boolean true, and 0 for false, according to the
  57  * interpretation of the string argument given.
  58  */
  59 int
  60 is_true(const char *boolean) {
  61         char *endp;
  62         long val;
  63
  64         val = strtoul(boolean, &endp, 0);
  65         if (*endp == '\0')
  66                 return (val != 0 ? 1 : 0);
  67         if (strcasecmp(boolean, "true") == 0 ||
  68             strcasecmp(boolean, "yes") == 0 ||
  69             strcasecmp(boolean, "enable") == 0)
  70                 return (1);
  71         if (strcasecmp(boolean, "false") == 0 ||
  72             strcasecmp(boolean, "no") == 0 ||
  73             strcasecmp(boolean, "disable") == 0)
  74                 return (0);
  75         /* Well, I have no idea what the user wants, so... */
  76         warnx("invalid boolean argument \"%s\"", boolean);
  77         usage();
  78         /* NOTREACHED */
  79 }
  80
  81 int
  82 int2bcd(int i)
  83 {
  84         int retval = 0;
  85         int base = 0;
  86
  87         if (i >= 10000)
  88                 return -1;
  89
  90         while (i) {
  91                 retval |= (i % 10) << base;
  92                 i /= 10;
  93                 base += 4;
  94         }
  95         return retval;
  96 }
  97
  98 int
  99 bcd2int(int bcd)
 100 {
 101         int retval = 0;
 102         int place = 1;
 103
 104         if (bcd > 0x9999)
 105                 return -1;
 106
 107         while (bcd) {
 108                 retval += (bcd & 0xf) * place;
 109                 bcd >>= 4;
 110                 place *= 10;
 111         }
 112         return retval;
 113 }
 114
 115 void
 116 apm_suspend(int fd)
 117 {
 118         if (ioctl(fd, APMIO_SUSPEND, NULL) == -1)
 119                 err(1, "ioctl(APMIO_SUSPEND)");
 120 }
 121
 122 void
 123 apm_standby(int fd)
 124 {
 125         if (ioctl(fd, APMIO_STANDBY, NULL) == -1)
 126                 err(1, "ioctl(APMIO_STANDBY)");
 127 }
 128
 129 void
 130 apm_getinfo(int fd, apm_info_t aip)
 131 {
 132         if (ioctl(fd, APMIO_GETINFO, aip) == -1)
 133                 err(1, "ioctl(APMIO_GETINFO)");
 134 }
 135
 136 void
 137 apm_enable(int fd, int enable) {
 138
 139         if (enable) {
 140                 if (ioctl(fd, APMIO_ENABLE) == -1)
 141                         err(1, "ioctl(APMIO_ENABLE)");
 142         } else {
 143                 if (ioctl(fd, APMIO_DISABLE) == -1)
 144                         err(1, "ioctl(APMIO_DISABLE)");
 145         }
 146 }
 147
 148 void
 149 print_all_info(int fd, apm_info_t aip, int bioscall_available)
 150 {
 151         struct apm_bios_arg args;
 152         int apmerr;
 153
 154         printf("APM version: %d.%d\n", aip->ai_major, aip->ai_minor);
 155         printf("APM Management: %s\n", (aip->ai_status ? "Enabled" : "Disabled"));
 156         printf("AC Line status: ");
 157         if (aip->ai_acline == 255)
 158                 printf("unknown");
 159         else if (aip->ai_acline > 1)
 160                 printf("invalid value (0x%x)", aip->ai_acline);
 161         else {
 162                 char *messages[] = { "off-line", "on-line" };
 163                 printf("%s", messages[aip->ai_acline]);
 164         }
 165         printf("\n");
 166         printf("Battery status: ");
 167         if (aip->ai_batt_stat == 255)
 168                 printf("unknown");
 169         else if (aip->ai_batt_stat > 3)
 170                         printf("invalid value (0x%x)", aip->ai_batt_stat);
 171         else {
 172                 char *messages[] = { "high", "low", "critical", "charging" };
 173                 printf("%s", messages[aip->ai_batt_stat]);
 174         }
 175         printf("\n");
 176         printf("Remaining battery life: ");
 177         if (aip->ai_batt_life == 255)
 178                 printf("unknown\n");
 179         else if (aip->ai_batt_life <= 100)
 180                 printf("%d%%\n", aip->ai_batt_life);
 181         else
 182                 printf("invalid value (0x%x)\n", aip->ai_batt_life);
 183         printf("Remaining battery time: ");
 184         if (aip->ai_batt_time == -1)
 185                 printf("unknown\n");
 186         else {
 187                 int t, h, m, s;
 188
 189                 t = aip->ai_batt_time;
 190                 s = t % 60;
 191                 t /= 60;
 192                 m = t % 60;
 193                 t /= 60;
 194                 h = t;
 195                 printf("%2d:%02d:%02d\n", h, m, s);
 196         }
 197         if (aip->ai_infoversion >= 1) {
 198                 printf("Number of batteries: ");
 199                 if (aip->ai_batteries == (u_int) -1)
 200                         printf("unknown\n");
 201                 else {
 202                         int i;
 203                         struct apm_pwstatus aps;
 204
 205                         printf("%d\n", aip->ai_batteries);
 206                         for (i = 0; i < aip->ai_batteries; ++i) {
 207                                 bzero(&aps, sizeof(aps));
 208                                 aps.ap_device = PMDV_BATT0 + i;
 209                                 if (ioctl(fd, APMIO_GETPWSTATUS, &aps) == -1)
 210                                         continue;
 211                                 printf("Battery %d:\n", i);
 212                                 printf("\tBattery status: ");
 213                                 if (aps.ap_batt_flag != 255 &&
 214                                     (aps.ap_batt_flag & APM_BATT_NOT_PRESENT)) {
 215                                         printf("not present\n");
 216                                         continue;
 217                                 }
 218                                 if (aps.ap_batt_stat == 255)
 219                                         printf("unknown\n");
 220                                 else if (aps.ap_batt_stat > 3)
 221                                         printf("invalid value (0x%x)\n",
 222                                                aps.ap_batt_stat);
 223                                 else {
 224                                         char *messages[] = { "high",
 225                                                              "low",
 226                                                              "critical",
 227                                                              "charging" };
 228                                         printf("%s\n",
 229                                                messages[aps.ap_batt_stat]);
 230                                 }
 231                                 printf("\tRemaining battery life: ");
 232                                 if (aps.ap_batt_life == 255)
 233                                         printf("unknown\n");
 234                                 else if (aps.ap_batt_life <= 100)
 235                                         printf("%d%%\n", aps.ap_batt_life);
 236                                 else
 237                                         printf("invalid value (0x%x)\n",
 238                                                aps.ap_batt_life);
 239                                 printf("\tRemaining battery time: ");
 240                                 if (aps.ap_batt_time == -1)
 241                                         printf("unknown\n");
 242                                 else {
 243                                         int t, h, m, s;
 244
 245                                         t = aps.ap_batt_time;
 246                                         s = t % 60;
 247                                         t /= 60;
 248                                         m = t % 60;
 249                                         t /= 60;
 250                                         h = t;
 251                                         printf("%2d:%02d:%02d\n", h, m, s);
 252                                 }
 253                         }
 254                 }
 255         }
 256
 257         if (bioscall_available) {
 258                 /*
 259                  * try to get the suspend timer
 260                  */
 261                 bzero(&args, sizeof(args));
 262                 args.eax = (APM_BIOS) << 8 | APM_RESUMETIMER;
 263                 args.ebx = PMDV_APMBIOS;
 264                 args.ecx = 0x0001;
 265                 if (ioctl(fd, APMIO_BIOS, &args)) {
 266                         printf("Resume timer: unknown\n");
 267                 } else {
 268                         apmerr = APMERR(args.eax);
 269                         if (apmerr == 0x0d || apmerr == 0x86)
 270                                 printf("Resume timer: disabled\n");
 271                         else if (apmerr)
 272                                 fprintf(stderr,
 273                                         "Failed to get the resume timer: APM error0x%x\n",
 274                                         apmerr);
 275                         else {
 276                                 /*
 277                                  * OK.  We have the time (all bcd).
 278                                  * CH - seconds
 279                                  * DH - hours
 280                                  * DL - minutes
 281                                  * xh(SI) - month (1-12)
 282                                  * xl(SI) - day of month (1-31)
 283                                  * DI - year
 284                                  */
 285                                 struct tm tm;
 286                                 char buf[1024];
 287                                 time_t t;
 288
 289                                 tm.tm_sec = bcd2int(xh(args.ecx));
 290                                 tm.tm_min = bcd2int(xl(args.edx));
 291                                 tm.tm_hour = bcd2int(xh(args.edx));
 292                                 tm.tm_mday = bcd2int(xl(args.esi));
 293                                 tm.tm_mon = bcd2int(xh(args.esi)) - 1;
 294                                 tm.tm_year = bcd2int(args.edi) - 1900;
 295                                 if (cmos_wall)
 296                                         t = mktime(&tm);
 297                                 else
 298                                         t = timegm(&tm);
 299                                 tm = *localtime(&t);
 300                                 strftime(buf, sizeof(buf), "%c", &tm);
 301                                 printf("Resume timer: %s\n", buf);
 302                         }
 303                 }
 304
 305                 /*
 306                  * Get the ring indicator resume state
 307                  */
 308                 bzero(&args, sizeof(args));
 309                 args.eax  = (APM_BIOS) << 8 | APM_RESUMEONRING;
 310                 args.ebx = PMDV_APMBIOS;
 311                 args.ecx = 0x0002;
 312                 if (ioctl(fd, APMIO_BIOS, &args) == 0) {
 313                         printf("Resume on ring indicator: %sabled\n",
 314                                args.ecx ? "en" : "dis");
 315                 }
 316         }
 317
 318         if (aip->ai_infoversion >= 1) {
 319                 printf("APM Capacities:\n", aip->ai_capabilities);
 320                 if (aip->ai_capabilities == 0xff00)
 321                         printf("\tunknown\n");
 322                 if (aip->ai_capabilities & 0x01)
 323                         printf("\tglobal standby state\n");
 324                 if (aip->ai_capabilities & 0x02)
 325                         printf("\tglobal suspend state\n");
 326                 if (aip->ai_capabilities & 0x04)
 327                         printf("\tresume timer from standby\n");
 328                 if (aip->ai_capabilities & 0x08)
 329                         printf("\tresume timer from suspend\n");
 330                 if (aip->ai_capabilities & 0x10)
 331                         printf("\tRI resume from standby\n");
 332                 if (aip->ai_capabilities & 0x20)
 333                         printf("\tRI resume from suspend\n");
 334                 if (aip->ai_capabilities & 0x40)
 335                         printf("\tPCMCIA RI resume from standby\n");
 336                 if (aip->ai_capabilities & 0x80)
 337                         printf("\tPCMCIA RI resume from suspend\n");
 338         }
 339
 340 }
 341
 342 /*
 343  * currently, it can turn off the display, but the display never comes
 344  * back until the machine suspend/resumes :-).
 345  */
 346 void
 347 apm_display(int fd, int newstate)
 348 {
 349         if (ioctl(fd, APMIO_DISPLAY, &newstate) == -1)
 350                 err(1, "ioctl(APMIO_DISPLAY)");
 351 }
 352
 353 void
 354 apm_haltcpu(int fd, int enable) {
 355
 356         if (enable) {
 357                 if (ioctl(fd, APMIO_HALTCPU, NULL) == -1)
 358                         err(1, "ioctl(APMIO_HALTCPU)");
 359         } else {
 360                 if (ioctl(fd, APMIO_NOTHALTCPU, NULL) == -1)
 361                         err(1, "ioctl(APMIO_NOTHALTCPU)");
 362         }
 363 }
 364
 365 void
 366 apm_set_timer(int fd, int delta)
 367 {
 368         time_t tmr;
 369         struct tm *tm;
 370         struct apm_bios_arg args;
 371
 372         tmr = time(NULL) + delta;
 373         if (cmos_wall)
 374                 tm = localtime(&tmr);
 375         else
 376                 tm = gmtime(&tmr);
 377         bzero(&args, sizeof(args));
 378         args.eax = (APM_BIOS) << 8 | APM_RESUMETIMER;
 379         args.ebx = PMDV_APMBIOS;
 380         if (delta > 0) {
 381                 args.ecx = (int2bcd(tm->tm_sec) << 8) | 0x02;
 382                 args.edx = (int2bcd(tm->tm_hour) << 8) | int2bcd(tm->tm_min);
 383                 args.esi = (int2bcd(tm->tm_mon + 1) << 8) | int2bcd(tm->tm_mday);
 384                 args.edi = int2bcd(tm->tm_year + 1900);
 385         } else {
 386                 args.ecx = 0x0000;
 387         }
 388         if (ioctl(fd, APMIO_BIOS, &args)) {
 389                 err(1,"Set resume timer");
 390         }
 391 }
 392
 393 int
 394 main(int argc, char *argv[])
 395 {
 396         int     c, fd;
 397         int     sleep = 0, all_info = 1, apm_status = 0, batt_status = 0;
 398         int     display = -1, batt_life = 0, ac_status = 0, standby = 0;
 399         int     batt_time = 0, delta = 0, enable = -1, haltcpu = -1;
 400         char    *cmdname;
 401         int     bioscall_available = 0;
 402         size_t  cmos_wall_len = sizeof(cmos_wall);
 403
 404         if (sysctlbyname("machdep.wall_cmos_clock", &cmos_wall, &cmos_wall_len,
 405             NULL, 0) == -1)
 406                 err(1, "sysctlbyname(machdep.wall_cmos_clock)");
 407         if ((cmdname = strrchr(argv[0], '/')) != NULL)
 408                 cmdname++;
 409         else
 410                 cmdname = argv[0];
 411
 412         if (strcmp(cmdname, "zzz") == 0) {
 413                 sleep = 1;
 414                 all_info = 0;
 415                 goto finish_option;
 416         }
 417         while ((c = getopt(argc, argv, "abe:h:lRr:stzd:Z")) != -1) {
 418                 switch (c) {
 419                 case 'a':
 420                         ac_status = 1;
 421                         all_info = 0;
 422                         break;
 423                 case 'b':
 424                         batt_status = 1;
 425                         all_info = 0;
 426                         break;
 427                 case 'd':
 428                         display = is_true(optarg);
 429                         all_info = 0;
 430                         break;
 431                 case 'l':
 432                         batt_life = 1;
 433                         all_info = 0;
 434                         break;
 435                 case 'R':
 436                         delta = -1;
 437                         break;
 438                 case 'r':
 439                         delta = atoi(optarg);
 440                         break;
 441                 case 's':
 442                         apm_status = 1;
 443                         all_info = 0;
 444                         break;
 445                 case 'e':
 446                         enable = is_true(optarg);
 447                         all_info = 0;
 448                         break;
 449                 case 'h':
 450                         haltcpu = is_true(optarg);
 451                         all_info = 0;
 452                         break;
 453                 case 't':
 454                         batt_time = 1;
 455                         all_info = 0;
 456                         break;
 457                 case 'z':
 458                         sleep = 1;
 459                         all_info = 0;
 460                         break;
 461                 case 'Z':
 462                         standby = 1;
 463                         all_info = 0;
 464                         break;
 465                 case '?':
 466                 default:
 467                         usage();
 468                 }
 469                 argc -= optind;
 470                 argv += optind;
 471         }
 472 finish_option:
 473         if (haltcpu != -1 || enable != -1 || display != -1 || delta || sleep || standby) {
 474                 fd = open(APMDEV, O_RDWR);
 475                 bioscall_available = 1;
 476         } else if ((fd = open(APMDEV, O_RDWR)) >= 0)
 477                 bioscall_available = 1;
 478         else
 479                 fd = open(APMDEV, O_RDONLY);
 480         if (fd == -1)
 481                 err(1, "can't open %s", APMDEV);
 482         if (enable != -1)
 483                 apm_enable(fd, enable);
 484         if (haltcpu != -1)
 485                 apm_haltcpu(fd, haltcpu);
 486         if (delta)
 487                 apm_set_timer(fd, delta);
 488         if (sleep)
 489                 apm_suspend(fd);
 490         else if (standby)
 491                 apm_standby(fd);
 492         else if (delta == 0) {
 493                 struct apm_info info;
 494
 495                 apm_getinfo(fd, &info);
 496                 if (all_info)
 497                         print_all_info(fd, &info, bioscall_available);
 498                 if (ac_status)
 499                         printf("%d\n", info.ai_acline);
 500                 if (batt_status)
 501                         printf("%d\n", info.ai_batt_stat);
 502                 if (batt_life)
 503                         printf("%d\n", info.ai_batt_life);
 504                 if (apm_status)
 505                         printf("%d\n", info.ai_status);
 506                 if (batt_time)
 507                         printf("%d\n", info.ai_batt_time);
 508                 if (display != -1)
 509                         apm_display(fd, display);
 510         }
 511         close(fd);
 512         exit(0);
 513 }