sbin/sysctl/sysctl.c

   1 /*
   2  * Copyright (c) 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#) Copyright (c) 1993 The Regents of the University of California.  All rights reserved.
  34  * @(#)from: sysctl.c   8.1 (Berkeley) 6/6/93
  35  * $FreeBSD: src/sbin/sysctl/sysctl.c,v 1.25.2.11 2003/05/01 22:48:08 trhodes Exp $
  36  * $DragonFly: src/sbin/sysctl/sysctl.c,v 1.16 2007/10/02 12:57:00 hasso Exp $
  37  */
  38
  39 #ifdef __i386__
  40 #include <sys/diskslice.h>      /* used for bootdev parsing */
  41 #include <sys/reboot.h>         /* used for bootdev parsing */
  42 #endif
  43 #include <sys/types.h>
  44 #include <sys/stat.h>
  45 #include <sys/sysctl.h>
  46 #include <sys/resource.h>
  47 #include <sys/sensors.h>
  48 #include <sys/param.h>
  49
  50 #include <machine/inttypes.h>
  51
  52 #include <ctype.h>
  53 #include <err.h>
  54 #include <errno.h>
  55 #include <stdio.h>
  56 #include <stdlib.h>
  57 #include <string.h>
  58 #include <unistd.h>
  59
  60 static int      aflag, bflag, dflag, eflag, Nflag, nflag, oflag, xflag;
  61
  62 static int      oidfmt(int *, size_t, char *, u_int *);
  63 static void     parse(const char *);
  64 static int      show_var(int *, size_t);
  65 static int      sysctl_all(int *, size_t);
  66 static void     set_T_dev_t(const char *, void **, size_t *);
  67
  68 static void
  69 usage(void)
  70 {
  71
  72         fprintf(stderr, "%s\n%s\n",
  73             "usage: sysctl [-bdeNnox] variable[=value] ...",
  74             "       sysctl [-bdeNnox] -a");
  75         exit(1);
  76 }
  77
  78 int
  79 main(int argc, char **argv)
  80 {
  81         int ch;
  82         setbuf(stdout,0);
  83         setbuf(stderr,0);
  84
  85         while ((ch = getopt(argc, argv, "AabdeNnowxX")) != -1) {
  86                 switch (ch) {
  87                 case 'A':
  88                         /* compatibility */
  89                         aflag = oflag = 1;
  90                         break;
  91                 case 'a':
  92                         aflag = 1;
  93                         break;
  94                 case 'b':
  95                         bflag = 1;
  96                         break;
  97                 case 'd':
  98                         dflag = 1;
  99                         break;
 100                 case 'e':
 101                         eflag = 1;
 102                         break;
 103                 case 'N':
 104                         Nflag = 1;
 105                         break;
 106                 case 'n':
 107                         nflag = 1;
 108                         break;
 109                 case 'o':
 110                         oflag = 1;
 111                         break;
 112                 case 'w':
 113                         /* compatibility */
 114                         /* ignored */
 115                         break;
 116                 case 'X':
 117                         /* compatibility */
 118                         aflag = xflag = 1;
 119                         break;
 120                 case 'x':
 121                         xflag = 1;
 122                         break;
 123                 default:
 124                         usage();
 125                 }
 126         }
 127         argc -= optind;
 128         argv += optind;
 129
 130         if (Nflag && nflag)
 131                 usage();
 132         if (aflag && argc == 0)
 133                 exit(sysctl_all(0, 0));
 134         if (argc == 0)
 135                 usage();
 136         while (argc-- > 0)
 137                 parse(*argv++);
 138         exit(0);
 139 }
 140
 141 /*
 142  * Parse a name into a MIB entry.
 143  * Lookup and print out the MIB entry if it exists.
 144  * Set a new value if requested.
 145  */
 146 static void
 147 parse(const char *string)
 148 {
 149         size_t len;
 150         int i, j;
 151         void *newval = NULL;
 152         int intval;
 153         unsigned int uintval;
 154         long longval;
 155         unsigned long ulongval;
 156         size_t newsize = 0;
 157         quad_t quadval;
 158         u_quad_t uquadval;
 159         int mib[CTL_MAXNAME];
 160         char *cp, fmt[BUFSIZ];
 161         const char *name;
 162         char *name_allocated = NULL;
 163         u_int kind;
 164
 165         if ((cp = strchr(string, '=')) != NULL) {
 166                 if ((name_allocated = malloc(cp - string + 1)) == NULL)
 167                         err(1, "malloc failed");
 168                 strlcpy(name_allocated, string, cp - string + 1);
 169                 name = name_allocated;
 170
 171                 while (isspace(*++cp))
 172                         ;
 173
 174                 newval = cp;
 175                 newsize = strlen(cp);
 176         } else {
 177                 name = string;
 178         }
 179
 180         len = CTL_MAXNAME;
 181         if (sysctlnametomib(name, mib, &len) < 0) {
 182                 if (errno == ENOENT) {
 183                         errx(1, "unknown oid '%s'", name);
 184                 } else {
 185                         err(1, "sysctlnametomib(\"%s\")", name);
 186                 }
 187         }
 188
 189         if (oidfmt(mib, len, fmt, &kind))
 190                 err(1, "couldn't find format of oid '%s'", name);
 191
 192         if (newval == NULL) {
 193                 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
 194                         sysctl_all(mib, len);
 195                 } else {
 196                         i = show_var(mib, len);
 197                         if (!i && !bflag)
 198                                 putchar('\n');
 199                 }
 200         } else {
 201                 if ((kind & CTLTYPE) == CTLTYPE_NODE)
 202                         errx(1, "oid '%s' isn't a leaf node", name);
 203
 204                 if (!(kind&CTLFLAG_WR))
 205                         errx(1, "oid '%s' is read only", name);
 206
 207                 switch (kind & CTLTYPE) {
 208                         case CTLTYPE_INT:
 209                                 intval = (int) strtol(newval, NULL, 0);
 210                                 newval = &intval;
 211                                 newsize = sizeof(intval);
 212                                 break;
 213                         case CTLTYPE_UINT:
 214                                 uintval = (int) strtoul(newval, NULL, 0);
 215                                 newval = &uintval;
 216                                 newsize = sizeof uintval;
 217                                 break;
 218                         case CTLTYPE_LONG:
 219                                 longval = strtol(newval, NULL, 0);
 220                                 newval = &longval;
 221                                 newsize = sizeof longval;
 222                                 break;
 223                         case CTLTYPE_ULONG:
 224                                 ulongval = strtoul(newval, NULL, 0);
 225                                 newval = &ulongval;
 226                                 newsize = sizeof ulongval;
 227                                 break;
 228                         case CTLTYPE_STRING:
 229                                 break;
 230                         case CTLTYPE_QUAD:
 231                                 quadval = strtoq(newval, NULL, 0);
 232                                 newval = &quadval;
 233                                 newsize = sizeof(quadval);
 234                                 break;
 235                         case CTLTYPE_UQUAD:
 236                                 uquadval = strtouq(newval, NULL, 0);
 237                                 newval = &quadval;
 238                                 newsize = sizeof(quadval);
 239                                 break;
 240                         case CTLTYPE_OPAQUE:
 241                                 if (strcmp(fmt, "T,dev_t") == 0 ||
 242                                     strcmp(fmt, "T,udev_t") == 0
 243                                 ) {
 244                                         set_T_dev_t((char*)newval, &newval,
 245                                                     &newsize);
 246                                         break;
 247                                 }
 248                                 /* FALLTHROUGH */
 249                         default:
 250                                 errx(1, "oid '%s' is type %d,"
 251                                         " cannot set that", name,
 252                                         kind & CTLTYPE);
 253                 }
 254
 255                 i = show_var(mib, len);
 256                 if (sysctl(mib, len, 0, 0, newval, newsize) == -1) {
 257                         if (!i && !bflag)
 258                                 putchar('\n');
 259                         switch (errno) {
 260                         case EOPNOTSUPP:
 261                                 errx(1, "%s: value is not available",
 262                                         string);
 263                         case ENOTDIR:
 264                                 errx(1, "%s: specification is incomplete",
 265                                         string);
 266                         case ENOMEM:
 267                                 errx(1, "%s: type is unknown to this program",
 268                                         string);
 269                         default:
 270                                 warn("%s", string);
 271                                 return;
 272                         }
 273                 }
 274                 if (!bflag)
 275                         printf(" -> ");
 276                 i = nflag;
 277                 nflag = 1;
 278                 j = show_var(mib, len);
 279                 if (!j && !bflag)
 280                         putchar('\n');
 281                 nflag = i;
 282         }
 283
 284         if (name_allocated != NULL)
 285                 free(name_allocated);
 286 }
 287
 288 /* These functions will dump out various interesting structures. */
 289
 290 static int
 291 S_clockinfo(int l2, void *p)
 292 {
 293         struct clockinfo *ci = (struct clockinfo*)p;
 294         if (l2 != sizeof(*ci))
 295                 err(1, "S_clockinfo %d != %zu", l2, sizeof(*ci));
 296         printf("{ hz = %d, tick = %d, tickadj = %d, profhz = %d, stathz = %d }",
 297                 ci->hz, ci->tick, ci->tickadj, ci->profhz, ci->stathz);
 298         return (0);
 299 }
 300
 301 static int
 302 S_loadavg(int l2, void *p)
 303 {
 304         struct loadavg *tv = (struct loadavg*)p;
 305
 306         if (l2 != sizeof(*tv))
 307                 err(1, "S_loadavg %d != %zu", l2, sizeof(*tv));
 308
 309         printf("{ %.2f %.2f %.2f }",
 310                 (double)tv->ldavg[0]/(double)tv->fscale,
 311                 (double)tv->ldavg[1]/(double)tv->fscale,
 312                 (double)tv->ldavg[2]/(double)tv->fscale);
 313         return (0);
 314 }
 315
 316 static int
 317 S_timespec(int l2, void *p)
 318 {
 319         struct timespec *ts = (struct timespec*)p;
 320         time_t tv_sec;
 321         char *p1, *p2;
 322
 323         if (l2 != sizeof(*ts))
 324                 err(1, "S_timespec %d != %zu", l2, sizeof(*ts));
 325         printf("{ sec = %ld, nsec = %ld } ",
 326                 ts->tv_sec, ts->tv_nsec);
 327         tv_sec = ts->tv_sec;
 328         p1 = strdup(ctime(&tv_sec));
 329         for (p2=p1; *p2 ; p2++)
 330                 if (*p2 == '\n')
 331                         *p2 = '\0';
 332         fputs(p1, stdout);
 333         return (0);
 334 }
 335
 336 static int
 337 S_timeval(int l2, void *p)
 338 {
 339         struct timeval *tv = (struct timeval*)p;
 340         time_t tv_sec;
 341         char *p1, *p2;
 342
 343         if (l2 != sizeof(*tv))
 344                 err(1, "S_timeval %d != %zu", l2, sizeof(*tv));
 345         printf("{ sec = %ld, usec = %ld } ",
 346                 tv->tv_sec, tv->tv_usec);
 347         tv_sec = tv->tv_sec;
 348         p1 = strdup(ctime(&tv_sec));
 349         for (p2=p1; *p2 ; p2++)
 350                 if (*p2 == '\n')
 351                         *p2 = '\0';
 352         fputs(p1, stdout);
 353         return (0);
 354 }
 355
 356 static int
 357 S_sensor(int l2, void *p)
 358 {
 359         struct sensor *s = (struct sensor *)p;
 360
 361         if (l2 != sizeof(*s)) {
 362                 warnx("S_sensor %d != %zu", l2, sizeof(*s));
 363                 return (1);
 364         }
 365
 366         if (s->flags & SENSOR_FINVALID) {
 367                 /*
 368                  * XXX: with this flag, the node should be entirely ignored,
 369                  * but as the magic-based sysctl(8) is not too flexible, we
 370                  * simply have to print out that the sensor is invalid.
 371                  */
 372                 printf("invalid");
 373                 return (0);
 374         }
 375
 376         if (s->flags & SENSOR_FUNKNOWN)
 377                 printf("unknown");
 378         else {
 379                 switch (s->type) {
 380                 case SENSOR_TEMP:
 381                         printf("%.2f degC",
 382                             (s->value - 273150000) / 1000000.0);
 383                         break;
 384                 case SENSOR_FANRPM:
 385                         printf("%jd RPM", (intmax_t)s->value);
 386                         break;
 387                 case SENSOR_VOLTS_DC:
 388                         printf("%.2f VDC", s->value / 1000000.0);
 389                         break;
 390                 case SENSOR_AMPS:
 391                         printf("%.2f A", s->value / 1000000.0);
 392                         break;
 393                 case SENSOR_WATTHOUR:
 394                         printf("%.2f Wh", s->value / 1000000.0);
 395                         break;
 396                 case SENSOR_AMPHOUR:
 397                         printf("%.2f Ah", s->value / 1000000.0);
 398                         break;
 399                 case SENSOR_INDICATOR:
 400                         printf("%s", s->value ? "On" : "Off");
 401                         break;
 402                 case SENSOR_INTEGER:
 403                         printf("%jd", (intmax_t)s->value);
 404                         break;
 405                 case SENSOR_PERCENT:
 406                         printf("%.2f%%", s->value / 1000.0);
 407                         break;
 408                 case SENSOR_LUX:
 409                         printf("%.2f lx", s->value / 1000000.0);
 410                         break;
 411                 case SENSOR_DRIVE:
 412                 {
 413                         const char *name;
 414
 415                         switch (s->value) {
 416                         case SENSOR_DRIVE_EMPTY:
 417                                 name = "empty";
 418                                 break;
 419                         case SENSOR_DRIVE_READY:
 420                                 name = "ready";
 421                                 break;
 422                         case SENSOR_DRIVE_POWERUP:
 423                                 name = "powering up";
 424                                 break;
 425                         case SENSOR_DRIVE_ONLINE:
 426                                 name = "online";
 427                                 break;
 428                         case SENSOR_DRIVE_IDLE:
 429                                 name = "idle";
 430                                 break;
 431                         case SENSOR_DRIVE_ACTIVE:
 432                                 name = "active";
 433                                 break;
 434                         case SENSOR_DRIVE_REBUILD:
 435                                 name = "rebuilding";
 436                                 break;
 437                         case SENSOR_DRIVE_POWERDOWN:
 438                                 name = "powering down";
 439                                 break;
 440                         case SENSOR_DRIVE_FAIL:
 441                                 name = "failed";
 442                                 break;
 443                         case SENSOR_DRIVE_PFAIL:
 444                                 name = "degraded";
 445                                 break;
 446                         default:
 447                                 name = "unknown";
 448                                 break;
 449                         }
 450                         printf(name);
 451                         break;
 452                 }
 453                 case SENSOR_TIMEDELTA:
 454                         printf("%.6f secs", s->value / 1000000000.0);
 455                         break;
 456                 default:
 457                         printf("unknown");
 458                 }
 459         }
 460
 461         if (s->desc[0] != '\0')
 462                 printf(" (%s)", s->desc);
 463
 464         switch (s->status) {
 465         case SENSOR_S_UNSPEC:
 466                 break;
 467         case SENSOR_S_OK:
 468                 printf(", OK");
 469                 break;
 470         case SENSOR_S_WARN:
 471                 printf(", WARNING");
 472                 break;
 473         case SENSOR_S_CRIT:
 474                 printf(", CRITICAL");
 475                 break;
 476         case SENSOR_S_UNKNOWN:
 477                 printf(", UNKNOWN");
 478                 break;
 479         }
 480
 481         if (s->tv.tv_sec) {
 482                 time_t t = s->tv.tv_sec;
 483                 char ct[26];
 484
 485                 ctime_r(&t, ct);
 486                 ct[19] = '\0';
 487                 printf(", %s.%03ld", ct, s->tv.tv_usec / 1000);
 488         }
 489
 490         return (0);
 491 }
 492
 493 static int
 494 T_dev_t(int l2, void *p)
 495 {
 496         dev_t *d = (dev_t *)p;
 497         if (l2 != sizeof(*d))
 498                 err(1, "T_dev_T %d != %zu", l2, sizeof(*d));
 499         if ((int)(*d) != -1) {
 500                 if (minor(*d) > 255 || minor(*d) < 0)
 501                         printf("{ major = %d, minor = 0x%x }",
 502                                 major(*d), minor(*d));
 503                 else
 504                         printf("{ major = %d, minor = %d }",
 505                                 major(*d), minor(*d));
 506         }
 507         return (0);
 508 }
 509
 510 static void
 511 set_T_dev_t(const char *path, void **val, size_t *size)
 512 {
 513         static struct stat statb;
 514
 515         if (strcmp(path, "none") && strcmp(path, "off")) {
 516                 int rc = stat (path, &statb);
 517                 if (rc) {
 518                         err(1, "cannot stat %s", path);
 519                 }
 520
 521                 if (!S_ISCHR(statb.st_mode)) {
 522                         errx(1, "must specify a device special file.");
 523                 }
 524         } else {
 525                 statb.st_rdev = NODEV;
 526         }
 527         *val = (char*) &statb.st_rdev;
 528         *size = sizeof statb.st_rdev;
 529 }
 530
 531 /*
 532  * These functions uses a presently undocumented interface to the kernel
 533  * to walk the tree and get the type so it can print the value.
 534  * This interface is under work and consideration, and should probably
 535  * be killed with a big axe by the first person who can find the time.
 536  * (be aware though, that the proper interface isn't as obvious as it
 537  * may seem, there are various conflicting requirements.
 538  */
 539
 540 static int
 541 oidfmt(int *oid, size_t len, char *fmt, u_int *kind)
 542 {
 543         int qoid[CTL_MAXNAME+2];
 544         u_char buf[BUFSIZ];
 545         int i;
 546         size_t j;
 547
 548         qoid[0] = 0;
 549         qoid[1] = 4;
 550         memcpy(qoid + 2, oid, len * sizeof(int));
 551
 552         j = sizeof(buf);
 553         i = sysctl(qoid, len + 2, buf, &j, 0, 0);
 554         if (i)
 555                 err(1, "sysctl fmt %d %zu %d", i, j, errno);
 556
 557         if (kind)
 558                 *kind = *(u_int *)buf;
 559
 560         if (fmt)
 561                 strcpy(fmt, (char *)(buf + sizeof(u_int)));
 562         return 0;
 563 }
 564
 565 #ifdef __i386__
 566 /*
 567  * Code to map a bootdev major number into a suitable device name.
 568  * Major numbers are mapped into names as in boot2.c
 569  */
 570 struct _foo {
 571         int majdev;
 572         const char *name;
 573 } maj2name[] = {
 574         { 30,   "ad" },
 575         { 0,    "wd" },
 576         { 1,    "wfd" },
 577         { 2,    "fd" },
 578         { 4,    "da" },
 579         { -1,   NULL }  /* terminator */
 580 };
 581
 582 static int
 583 machdep_bootdev(u_long value)
 584 {
 585         int majdev, unit, slice, part;
 586         struct _foo *p;
 587
 588         if ((value & B_MAGICMASK) != B_DEVMAGIC) {
 589                 printf("invalid (0x%08lx)", value);
 590                 return 0;
 591         }
 592         majdev = B_TYPE(value);
 593         unit = B_UNIT(value);
 594         slice = B_SLICE(value);
 595         part = B_PARTITION(value);
 596         if (majdev == 2) {      /* floppy, as known to the boot block... */
 597                 printf("/dev/fd%d", unit);
 598                 return 0;
 599         }
 600         for (p = maj2name; p->name != NULL && p->majdev != majdev ; p++) ;
 601         if (p->name != NULL) {  /* found */
 602                 if (slice == WHOLE_DISK_SLICE)
 603                         printf("/dev/%s%d%c", p->name, unit, part);
 604                 else
 605                         printf("/dev/%s%ds%d%c",
 606                             p->name, unit, slice - BASE_SLICE + 1, part + 'a');
 607         } else
 608                 printf("unknown (major %d unit %d slice %d part %d)",
 609                         majdev, unit, slice, part);
 610         return 0;
 611 }
 612 #endif
 613
 614 /*
 615  * This formats and outputs the value of one variable
 616  *
 617  * Returns zero if anything was actually output.
 618  * Returns one if didn't know what to do with this.
 619  * Return minus one if we had errors.
 620  */
 621
 622 static int
 623 show_var(int *oid, size_t nlen)
 624 {
 625         u_char buf[BUFSIZ], *val, *p, *nul;
 626         char name[BUFSIZ], *fmt;
 627         const char *sep, *spacer;
 628         int qoid[CTL_MAXNAME+2];
 629         int i;
 630         size_t j, len;
 631         u_int kind;
 632         int (*func)(int, void *);
 633
 634         qoid[0] = 0;
 635         memcpy(qoid + 2, oid, nlen * sizeof(int));
 636
 637         qoid[1] = 1;
 638         j = sizeof(name);
 639         i = sysctl(qoid, nlen + 2, name, &j, 0, 0);
 640         if (i || !j)
 641                 err(1, "sysctl name %d %zu %d", i, j, errno);
 642
 643         if (Nflag) {
 644                 printf("%s", name);
 645                 return (0);
 646         }
 647
 648         if (eflag)
 649                 sep = "=";
 650         else
 651                 sep = ": ";
 652
 653         if (dflag) {    /* just print description */
 654                 qoid[1] = 5;
 655                 j = sizeof(buf);
 656                 i = sysctl(qoid, nlen + 2, buf, &j, 0, 0);
 657                 if (!nflag)
 658                         printf("%s%s", name, sep);
 659                 printf("%s", buf);
 660                 return(0);
 661         }
 662         /* find an estimate of how much we need for this var */
 663         j = 0;
 664         i = sysctl(oid, nlen, 0, &j, 0, 0);
 665         j += j; /* we want to be sure :-) */
 666
 667         val = alloca(j + 1);
 668         len = j;
 669         i = sysctl(oid, nlen, val, &len, 0, 0);
 670         if (i || !len)
 671                 return (1);
 672
 673         if (bflag) {
 674                 fwrite(val, 1, len, stdout);
 675                 return (0);
 676         }
 677
 678         val[len] = '\0';
 679         fmt = buf;
 680         oidfmt(oid, nlen, fmt, &kind);
 681         p = val;
 682         switch (*fmt) {
 683         case 'A':
 684                 if (!nflag)
 685                         printf("%s%s", name, sep);
 686                 nul = memchr(p, '\0', len);
 687                 fwrite(p, nul == NULL ? len : nul - p, 1, stdout);
 688                 return (0);
 689
 690         case 'I':
 691                 if (!nflag)
 692                         printf("%s%s", name, sep);
 693                 fmt++;
 694                 spacer = "";
 695                 while (len >= sizeof(int)) {
 696                         if(*fmt == 'U')
 697                                 printf("%s%u", spacer, *(unsigned int *)p);
 698                         else
 699                                 printf("%s%d", spacer, *(int *)p);
 700                         spacer = " ";
 701                         len -= sizeof(int);
 702                         p += sizeof(int);
 703                 }
 704                 return (0);
 705
 706         case 'L':
 707                 if (!nflag)
 708                         printf("%s%s", name, sep);
 709                 fmt++;
 710 #ifdef __i386__
 711                 if (!strcmp(name, "machdep.guessed_bootdev"))
 712                         return machdep_bootdev(*(unsigned long *)p);
 713 #endif
 714                 spacer = "";
 715                 while (len >= sizeof(long)) {
 716                         if(*fmt == 'U')
 717                                 printf("%s%lu", spacer, *(unsigned long *)p);
 718                         else
 719                                 printf("%s%ld", spacer, *(long *)p);
 720                         spacer = " ";
 721                         len -= sizeof(long);
 722                         p += sizeof(long);
 723                 }
 724                 return (0);
 725
 726         case 'P':
 727                 if (!nflag)
 728                         printf("%s%s", name, sep);
 729                 printf("%p", *(void **)p);
 730                 return (0);
 731
 732         case 'Q':
 733                 if (!nflag)
 734                         printf("%s%s", name, sep);
 735                 fmt++;
 736                 spacer = "";
 737                 while (len >= sizeof(quad_t)) {
 738                         if(*fmt == 'U') {
 739                                 printf("%s%ju",
 740                                        spacer, (uintmax_t)*(u_quad_t *)p);
 741                         } else {
 742                                 printf("%s%jd",
 743                                        spacer, (intmax_t)*(quad_t *)p);
 744                         }
 745                         spacer = " ";
 746                         len -= sizeof(int64_t);
 747                         p += sizeof(int64_t);
 748                 }
 749                 return (0);
 750
 751         case 'T':
 752         case 'S':
 753                 if (!oflag && !xflag) {
 754                         i = 0;
 755                         if (strcmp(fmt, "S,clockinfo") == 0)
 756                                 func = S_clockinfo;
 757                         else if (strcmp(fmt, "S,timespec") == 0)
 758                                 func = S_timespec;
 759                         else if (strcmp(fmt, "S,timeval") == 0)
 760                                 func = S_timeval;
 761                         else if (strcmp(fmt, "S,loadavg") == 0)
 762                                 func = S_loadavg;
 763                         else if (strcmp(fmt, "S,sensor") == 0)
 764                                 func = S_sensor;
 765                         else if (strcmp(fmt, "T,dev_t") == 0)
 766                                 func = T_dev_t;
 767                         else if (strcmp(fmt, "T,udev_t") == 0)
 768                                 func = T_dev_t;
 769                         else
 770                                 func = NULL;
 771                         if (func) {
 772                                 if (!nflag)
 773                                         printf("%s%s", name, sep);
 774                                 return ((*func)(len, p));
 775                         }
 776                 }
 777                 /* FALL THROUGH */
 778         default:
 779                 if (!oflag && !xflag)
 780                         return (1);
 781                 if (!nflag)
 782                         printf("%s%s", name, sep);
 783                 printf("Format:%s Length:%zu Dump:0x", fmt, len);
 784                 while (len-- && (xflag || p < val + 16))
 785                         printf("%02x", *p++);
 786                 if (!xflag && len > 16)
 787                         printf("...");
 788                 return (0);
 789         }
 790         return (1);
 791 }
 792
 793 static int
 794 sysctl_all(int *oid, size_t len)
 795 {
 796         int name1[22], name2[22];
 797         int retval;
 798         size_t i, l1, l2;
 799
 800         name1[0] = 0;
 801         name1[1] = 2;
 802         l1 = 2;
 803         if (len) {
 804                 memcpy(name1+2, oid, len * sizeof(int));
 805                 l1 += len;
 806         } else {
 807                 name1[2] = 1;
 808                 l1++;
 809         }
 810         for (;;) {
 811                 l2 = sizeof(name2);
 812                 retval = sysctl(name1, l1, name2, &l2, 0, 0);
 813                 if (retval < 0) {
 814                         if (errno == ENOENT)
 815                                 return 0;
 816                         else
 817                                 err(1, "sysctl(getnext) %d %zu", retval, l2);
 818                 }
 819
 820                 l2 /= sizeof(int);
 821
 822                 if (l2 < len)
 823                         return 0;
 824
 825                 for (i = 0; i < len; i++)
 826                         if (name2[i] != oid[i])
 827                                 return 0;
 828
 829                 retval = show_var(name2, l2);
 830                 if (retval == 0 && !bflag)
 831                         putchar('\n');
 832
 833                 memcpy(name1+2, name2, l2 * sizeof(int));
 834                 l1 = 2 + l2;
 835         }
 836 }