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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#) Copyright (c) 1993 The Regents of the University of California.  All rights reserved.
  30  * @(#)from: sysctl.c   8.1 (Berkeley) 6/6/93
  31  * $FreeBSD: src/sbin/sysctl/sysctl.c,v 1.25.2.11 2003/05/01 22:48:08 trhodes Exp $
  32  */
  33
  34 #include <sys/types.h>
  35 #include <sys/stat.h>
  36 #include <sys/sysctl.h>
  37 #include <sys/resource.h>
  38 #include <sys/sensors.h>
  39 #include <sys/param.h>
  40
  41 #include <machine/inttypes.h>
  42
  43 #include <ctype.h>
  44 #include <err.h>
  45 #include <errno.h>
  46 #include <stdio.h>
  47 #include <stdlib.h>
  48 #include <string.h>
  49 #include <unistd.h>
  50
  51 static int      aflag, bflag, dflag, eflag, Nflag, nflag, oflag, xflag;
  52 static int      iflag, qflag;
  53
  54 static int      oidfmt(int *, size_t, char *, u_int *);
  55 static int      parse(const char *);
  56 static int      show_var(int *, size_t);
  57 static int      sysctl_all(int *, size_t);
  58 static void     set_T_dev_t(const char *, void **, size_t *);
  59 static int      set_IK(const char *, int *);
  60
  61 static void
  62 usage(void)
  63 {
  64
  65         fprintf(stderr, "%s\n%s\n",
  66             "usage: sysctl [-bdeNnox] variable[=value] ...",
  67             "       sysctl [-bdeNnox] -a");
  68         exit(1);
  69 }
  70
  71 int
  72 main(int argc, char **argv)
  73 {
  74         int ch;
  75         int warncount;
  76
  77         setbuf(stdout,0);
  78         setbuf(stderr,0);
  79
  80         while ((ch = getopt(argc, argv, "AabdeiNnoqwxX")) != -1) {
  81                 switch (ch) {
  82                 case 'A':
  83                         /* compatibility */
  84                         aflag = oflag = 1;
  85                         break;
  86                 case 'a':
  87                         aflag = 1;
  88                         break;
  89                 case 'b':
  90                         bflag = 1;
  91                         break;
  92                 case 'd':
  93                         dflag = 1;
  94                         break;
  95                 case 'e':
  96                         eflag = 1;
  97                         break;
  98                 case 'i':
  99                         iflag = 1;
 100                         break;
 101                 case 'N':
 102                         Nflag = 1;
 103                         break;
 104                 case 'n':
 105                         nflag = 1;
 106                         break;
 107                 case 'o':
 108                         oflag = 1;
 109                         break;
 110                 case 'q':
 111                         qflag = 1;
 112                         break;
 113                 case 'w':
 114                         /* compatibility */
 115                         /* ignored */
 116                         break;
 117                 case 'X':
 118                         /* compatibility */
 119                         aflag = xflag = 1;
 120                         break;
 121                 case 'x':
 122                         xflag = 1;
 123                         break;
 124                 default:
 125                         usage();
 126                 }
 127         }
 128         argc -= optind;
 129         argv += optind;
 130
 131         if (Nflag && nflag)
 132                 usage();
 133         if (aflag && argc == 0)
 134                 exit(sysctl_all(0, 0));
 135         if (argc == 0)
 136                 usage();
 137         warncount = 0;
 138         while (argc-- > 0)
 139                 warncount += parse(*argv++);
 140
 141         return warncount;
 142 }
 143
 144 /*
 145  * Parse a name into a MIB entry.
 146  * Lookup and print out the MIB entry if it exists.
 147  * Set a new value if requested.
 148  */
 149 static int
 150 parse(const char *string)
 151 {
 152         size_t len;
 153         int i, j;
 154         void *newval = NULL;
 155         int intval;
 156         unsigned int uintval;
 157         long longval;
 158         unsigned long ulongval;
 159         size_t newsize = 0;
 160         quad_t quadval;
 161         u_quad_t uquadval;
 162         int mib[CTL_MAXNAME];
 163         char *cp, fmt[BUFSIZ];
 164         const char *name;
 165         char *name_allocated = NULL;
 166         u_int kind;
 167
 168         if ((cp = strchr(string, '=')) != NULL) {
 169                 if ((name_allocated = malloc(cp - string + 1)) == NULL)
 170                         err(1, "malloc failed");
 171                 strlcpy(name_allocated, string, cp - string + 1);
 172                 name = name_allocated;
 173
 174                 while (isspace(*++cp))
 175                         ;
 176
 177                 newval = cp;
 178                 newsize = strlen(cp);
 179         } else {
 180                 name = string;
 181         }
 182
 183         len = CTL_MAXNAME;
 184         if (sysctlnametomib(name, mib, &len) < 0) {
 185                 if (iflag)
 186                         return 0;
 187                 if (qflag)
 188                         return 1;
 189                 if (errno == ENOENT) {
 190                         errx(1, "unknown oid '%s'", name);
 191                 } else {
 192                         err(1, "sysctlnametomib(\"%s\")", name);
 193                 }
 194         }
 195
 196         if (oidfmt(mib, len, fmt, &kind)) {
 197                 warn("couldn't find format of oid '%s'", name);
 198                 if (iflag)
 199                         return 1;
 200                 exit(1);
 201         }
 202
 203         if (newval == NULL) {
 204                 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
 205                         sysctl_all(mib, len);
 206                 } else {
 207                         i = show_var(mib, len);
 208                         if (!i && !bflag)
 209                                 putchar('\n');
 210                 }
 211         } else {
 212                 if ((kind & CTLTYPE) == CTLTYPE_NODE)
 213                         errx(1, "oid '%s' isn't a leaf node", name);
 214
 215                 if (!(kind&CTLFLAG_WR))
 216                         errx(1, "oid '%s' is read only", name);
 217
 218                 switch (kind & CTLTYPE) {
 219                         case CTLTYPE_INT:
 220                                 if (!(strcmp(fmt, "IK") == 0)) {
 221                                         if (!set_IK(newval, &intval))
 222                                                 errx(1, "invalid value '%s'",
 223                                                     (char *)newval);
 224                                 } else
 225                                         intval = (int) strtol(newval, NULL, 0);
 226                                 newval = &intval;
 227                                 newsize = sizeof(intval);
 228                                 break;
 229                         case CTLTYPE_UINT:
 230                                 uintval = (int) strtoul(newval, NULL, 0);
 231                                 newval = &uintval;
 232                                 newsize = sizeof uintval;
 233                                 break;
 234                         case CTLTYPE_LONG:
 235                                 longval = strtol(newval, NULL, 0);
 236                                 newval = &longval;
 237                                 newsize = sizeof longval;
 238                                 break;
 239                         case CTLTYPE_ULONG:
 240                                 ulongval = strtoul(newval, NULL, 0);
 241                                 newval = &ulongval;
 242                                 newsize = sizeof ulongval;
 243                                 break;
 244                         case CTLTYPE_STRING:
 245                                 break;
 246                         case CTLTYPE_QUAD:
 247                                 quadval = strtoq(newval, NULL, 0);
 248                                 newval = &quadval;
 249                                 newsize = sizeof(quadval);
 250                                 break;
 251                         case CTLTYPE_UQUAD:
 252                                 uquadval = strtouq(newval, NULL, 0);
 253                                 newval = &uquadval;
 254                                 newsize = sizeof(uquadval);
 255                                 break;
 256                         case CTLTYPE_OPAQUE:
 257                                 if (strcmp(fmt, "T,dev_t") == 0 ||
 258                                     strcmp(fmt, "T,udev_t") == 0
 259                                 ) {
 260                                         set_T_dev_t((char*)newval, &newval,
 261                                                     &newsize);
 262                                         break;
 263                                 }
 264                                 /* FALLTHROUGH */
 265                         default:
 266                                 errx(1, "oid '%s' is type %d,"
 267                                         " cannot set that", name,
 268                                         kind & CTLTYPE);
 269                 }
 270
 271                 i = show_var(mib, len);
 272                 if (sysctl(mib, len, 0, 0, newval, newsize) == -1) {
 273                         if (!i && !bflag)
 274                                 putchar('\n');
 275                         switch (errno) {
 276                         case EOPNOTSUPP:
 277                                 errx(1, "%s: value is not available",
 278                                         string);
 279                         case ENOTDIR:
 280                                 errx(1, "%s: specification is incomplete",
 281                                         string);
 282                         case ENOMEM:
 283                                 errx(1, "%s: type is unknown to this program",
 284                                         string);
 285                         default:
 286                                 warn("%s", string);
 287                                 return 1;
 288                         }
 289                 }
 290                 if (!bflag)
 291                         printf(" -> ");
 292                 i = nflag;
 293                 nflag = 1;
 294                 j = show_var(mib, len);
 295                 if (!j && !bflag)
 296                         putchar('\n');
 297                 nflag = i;
 298         }
 299
 300         if (name_allocated != NULL)
 301                 free(name_allocated);
 302
 303         return 0;
 304 }
 305
 306 /* These functions will dump out various interesting structures. */
 307
 308 static int
 309 S_clockinfo(size_t l2, void *p)
 310 {
 311         struct clockinfo *ci = (struct clockinfo*)p;
 312         if (l2 != sizeof(*ci))
 313                 err(1, "S_clockinfo %zu != %zu", l2, sizeof(*ci));
 314         printf("{ hz = %d, tick = %d, tickadj = %d, profhz = %d, stathz = %d }",
 315                 ci->hz, ci->tick, ci->tickadj, ci->profhz, ci->stathz);
 316         return (0);
 317 }
 318
 319 static int
 320 S_loadavg(size_t l2, void *p)
 321 {
 322         struct loadavg *tv = (struct loadavg*)p;
 323
 324         if (l2 != sizeof(*tv))
 325                 err(1, "S_loadavg %zu != %zu", l2, sizeof(*tv));
 326
 327         printf("{ %.2f %.2f %.2f }",
 328                 (double)tv->ldavg[0]/(double)tv->fscale,
 329                 (double)tv->ldavg[1]/(double)tv->fscale,
 330                 (double)tv->ldavg[2]/(double)tv->fscale);
 331         return (0);
 332 }
 333
 334 static int
 335 S_timespec(size_t l2, void *p)
 336 {
 337         struct timespec *ts = (struct timespec*)p;
 338         time_t tv_sec;
 339         char *p1, *p2;
 340
 341         if (l2 != sizeof(*ts))
 342                 err(1, "S_timespec %zu != %zu", l2, sizeof(*ts));
 343         printf("{ sec = %ld, nsec = %ld } ",
 344                 ts->tv_sec, ts->tv_nsec);
 345         tv_sec = ts->tv_sec;
 346         p1 = strdup(ctime(&tv_sec));
 347         for (p2=p1; *p2 ; p2++)
 348                 if (*p2 == '\n')
 349                         *p2 = '\0';
 350         fputs(p1, stdout);
 351         return (0);
 352 }
 353
 354 static int
 355 S_timeval(size_t l2, void *p)
 356 {
 357         struct timeval *tv = (struct timeval*)p;
 358         time_t tv_sec;
 359         char *p1, *p2;
 360
 361         if (l2 != sizeof(*tv))
 362                 err(1, "S_timeval %zu != %zu", l2, sizeof(*tv));
 363         printf("{ sec = %ld, usec = %ld } ",
 364                 tv->tv_sec, tv->tv_usec);
 365         tv_sec = tv->tv_sec;
 366         p1 = strdup(ctime(&tv_sec));
 367         for (p2=p1; *p2 ; p2++)
 368                 if (*p2 == '\n')
 369                         *p2 = '\0';
 370         fputs(p1, stdout);
 371         return (0);
 372 }
 373
 374 static int
 375 S_sensor(size_t l2, void *p)
 376 {
 377         struct sensor *s = (struct sensor *)p;
 378
 379         if (l2 != sizeof(*s)) {
 380                 warnx("S_sensor %zu != %zu", l2, sizeof(*s));
 381                 return (1);
 382         }
 383
 384         if (s->flags & SENSOR_FINVALID) {
 385                 /*
 386                  * XXX: with this flag, the node should be entirely ignored,
 387                  * but as the magic-based sysctl(8) is not too flexible, we
 388                  * simply have to print out that the sensor is invalid.
 389                  */
 390                 printf("invalid");
 391                 return (0);
 392         }
 393
 394         if (s->flags & SENSOR_FUNKNOWN)
 395                 printf("unknown");
 396         else {
 397                 switch (s->type) {
 398                 case SENSOR_TEMP:
 399                         printf("%.2f degC",
 400                             (s->value - 273150000) / 1000000.0);
 401                         break;
 402                 case SENSOR_FANRPM:
 403                         printf("%jd RPM", (intmax_t)s->value);
 404                         break;
 405                 case SENSOR_VOLTS_DC:
 406                         printf("%.2f VDC", s->value / 1000000.0);
 407                         break;
 408                 case SENSOR_WATTS:
 409                         printf("%.2f W", s->value / 1000000.0);
 410                         break;
 411                 case SENSOR_AMPS:
 412                         printf("%.2f A", s->value / 1000000.0);
 413                         break;
 414                 case SENSOR_WATTHOUR:
 415                         printf("%.2f Wh", s->value / 1000000.0);
 416                         break;
 417                 case SENSOR_AMPHOUR:
 418                         printf("%.2f Ah", s->value / 1000000.0);
 419                         break;
 420                 case SENSOR_INDICATOR:
 421                         printf("%s", s->value ? "On" : "Off");
 422                         break;
 423                 case SENSOR_FREQ:
 424                         printf("%jd Hz", (intmax_t)s->value);
 425                         break;
 426                 case SENSOR_ECC:
 427                 case SENSOR_INTEGER:
 428                         printf("%jd", (intmax_t)s->value);
 429                         break;
 430                 case SENSOR_PERCENT:
 431                         printf("%.2f%%", s->value / 1000.0);
 432                         break;
 433                 case SENSOR_LUX:
 434                         printf("%.2f lx", s->value / 1000000.0);
 435                         break;
 436                 case SENSOR_DRIVE:
 437                 {
 438                         const char *name;
 439
 440                         switch (s->value) {
 441                         case SENSOR_DRIVE_EMPTY:
 442                                 name = "empty";
 443                                 break;
 444                         case SENSOR_DRIVE_READY:
 445                                 name = "ready";
 446                                 break;
 447                         case SENSOR_DRIVE_POWERUP:
 448                                 name = "powering up";
 449                                 break;
 450                         case SENSOR_DRIVE_ONLINE:
 451                                 name = "online";
 452                                 break;
 453                         case SENSOR_DRIVE_IDLE:
 454                                 name = "idle";
 455                                 break;
 456                         case SENSOR_DRIVE_ACTIVE:
 457                                 name = "active";
 458                                 break;
 459                         case SENSOR_DRIVE_REBUILD:
 460                                 name = "rebuilding";
 461                                 break;
 462                         case SENSOR_DRIVE_POWERDOWN:
 463                                 name = "powering down";
 464                                 break;
 465                         case SENSOR_DRIVE_FAIL:
 466                                 name = "failed";
 467                                 break;
 468                         case SENSOR_DRIVE_PFAIL:
 469                                 name = "degraded";
 470                                 break;
 471                         default:
 472                                 name = "unknown";
 473                                 break;
 474                         }
 475                         printf("%s", name);
 476                         break;
 477                 }
 478                 case SENSOR_TIMEDELTA:
 479                         printf("%.6f secs", s->value / 1000000000.0);
 480                         break;
 481                 default:
 482                         printf("unknown");
 483                 }
 484         }
 485
 486         if (s->desc[0] != '\0')
 487                 printf(" (%s)", s->desc);
 488
 489         switch (s->status) {
 490         case SENSOR_S_UNSPEC:
 491                 break;
 492         case SENSOR_S_OK:
 493                 printf(", OK");
 494                 break;
 495         case SENSOR_S_WARN:
 496                 printf(", WARNING");
 497                 break;
 498         case SENSOR_S_CRIT:
 499                 printf(", CRITICAL");
 500                 break;
 501         case SENSOR_S_UNKNOWN:
 502                 printf(", UNKNOWN");
 503                 break;
 504         }
 505
 506         if (s->tv.tv_sec) {
 507                 time_t t = s->tv.tv_sec;
 508                 char ct[26];
 509
 510                 ctime_r(&t, ct);
 511                 ct[19] = '\0';
 512                 printf(", %s.%03ld", ct, s->tv.tv_usec / 1000);
 513         }
 514
 515         return (0);
 516 }
 517
 518 static int
 519 T_dev_t(size_t l2, void *p)
 520 {
 521         dev_t *d = (dev_t *)p;
 522         if (l2 != sizeof(*d))
 523                 err(1, "T_dev_T %zu != %zu", l2, sizeof(*d));
 524         if ((int)(*d) != -1) {
 525                 if (minor(*d) > 255 || minor(*d) < 0)
 526                         printf("{ major = %d, minor = 0x%x }",
 527                                 major(*d), minor(*d));
 528                 else
 529                         printf("{ major = %d, minor = %d }",
 530                                 major(*d), minor(*d));
 531         }
 532         return (0);
 533 }
 534
 535 static void
 536 set_T_dev_t(const char *path, void **val, size_t *size)
 537 {
 538         static struct stat statb;
 539
 540         if (strcmp(path, "none") && strcmp(path, "off")) {
 541                 int rc = stat (path, &statb);
 542                 if (rc) {
 543                         err(1, "cannot stat %s", path);
 544                 }
 545
 546                 if (!S_ISCHR(statb.st_mode)) {
 547                         errx(1, "must specify a device special file.");
 548                 }
 549         } else {
 550                 statb.st_rdev = NODEV;
 551         }
 552         *val = (char*) &statb.st_rdev;
 553         *size = sizeof statb.st_rdev;
 554 }
 555
 556 static int
 557 set_IK(const char *str, int *val)
 558 {
 559         float temp;
 560         int len, kelv;
 561         const char *p;
 562         char *endptr;
 563
 564         if ((len = strlen(str)) == 0)
 565                 return (0);
 566         p = &str[len - 1];
 567         if (*p == 'C' || *p == 'F') {
 568                 temp = strtof(str, &endptr);
 569                 if (endptr == str || endptr != p)
 570                         return 0;
 571                 if (*p == 'F')
 572                         temp = (temp - 32) * 5 / 9;
 573                 kelv = temp * 10 + 2732;
 574         } else {
 575                 /*
 576                  * I would like to just use, 0 but it would make numbers
 577                  * like '023' which were interpreted as decimal before
 578                  * suddenly interpreted as octal.
 579                  */
 580                 if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
 581                         kelv = (int)strtol(str, &endptr, 0);
 582                 else
 583                         kelv = (int)strtol(str, &endptr, 10);
 584                 if (endptr == str || *endptr != '\0')
 585                         return 0;
 586         }
 587         *val = kelv;
 588         return 1;
 589 }
 590
 591 /*
 592  * These functions uses a presently undocumented interface to the kernel
 593  * to walk the tree and get the type so it can print the value.
 594  * This interface is under work and consideration, and should probably
 595  * be killed with a big axe by the first person who can find the time.
 596  * (be aware though, that the proper interface isn't as obvious as it
 597  * may seem, there are various conflicting requirements.
 598  */
 599
 600 static int
 601 oidfmt(int *oid, size_t len, char *fmt, u_int *kind)
 602 {
 603         int qoid[CTL_MAXNAME+2];
 604         u_char buf[BUFSIZ];
 605         int i;
 606         size_t j;
 607
 608         qoid[0] = 0;
 609         qoid[1] = 4;
 610         memcpy(qoid + 2, oid, len * sizeof(int));
 611
 612         j = sizeof(buf);
 613         i = sysctl(qoid, len + 2, buf, &j, 0, 0);
 614         if (i)
 615                 err(1, "sysctl fmt %d %zu %d", i, j, errno);
 616
 617         if (kind)
 618                 *kind = *(u_int *)buf;
 619
 620         if (fmt)
 621                 strcpy(fmt, (char *)(buf + sizeof(u_int)));
 622         return 0;
 623 }
 624
 625 /*
 626  * This formats and outputs the value of one variable
 627  *
 628  * Returns zero if anything was actually output.
 629  * Returns one if didn't know what to do with this.
 630  * Return minus one if we had errors.
 631  */
 632
 633 static int
 634 show_var(int *oid, size_t nlen)
 635 {
 636         u_char buf[BUFSIZ], *val = NULL, *p, *nul;
 637         char name[BUFSIZ], *fmt;
 638         const char *sep, *spacer;
 639         int qoid[CTL_MAXNAME+2];
 640         int i;
 641         size_t j, len;
 642         u_int kind;
 643         int (*func)(size_t, void *);
 644         int error = 0;
 645
 646         qoid[0] = 0;
 647         memcpy(qoid + 2, oid, nlen * sizeof(int));
 648
 649         qoid[1] = 1;
 650         j = sizeof(name);
 651         i = sysctl(qoid, nlen + 2, name, &j, 0, 0);
 652         if (i || !j)
 653                 err(1, "sysctl name %d %zu %d", i, j, errno);
 654
 655         if (Nflag) {
 656                 printf("%s", name);
 657                 return (0);
 658         }
 659
 660         if (eflag)
 661                 sep = "=";
 662         else
 663                 sep = ": ";
 664
 665         if (dflag) {    /* just print description */
 666                 qoid[1] = 5;
 667                 j = sizeof(buf);
 668                 i = sysctl(qoid, nlen + 2, buf, &j, 0, 0);
 669                 if (!nflag)
 670                         printf("%s%s", name, sep);
 671                 printf("%s", buf);
 672                 return(0);
 673         }
 674         /* find an estimate of how much we need for this var */
 675         j = 0;
 676         i = sysctl(oid, nlen, 0, &j, 0, 0);
 677         j += j; /* we want to be sure :-) */
 678
 679         val = malloc(j + 1);
 680         if (val == NULL)
 681                 return (1);
 682
 683         len = j;
 684         i = sysctl(oid, nlen, val, &len, 0, 0);
 685         if (i || !len) {
 686                 error = 1;
 687                 goto done;
 688         }
 689
 690         if (bflag) {
 691                 fwrite(val, 1, len, stdout);
 692                 goto done;
 693         }
 694
 695         val[len] = '\0';
 696         fmt = buf;
 697         oidfmt(oid, nlen, fmt, &kind);
 698         p = val;
 699         switch (*fmt) {
 700         case 'A':
 701                 if (!nflag)
 702                         printf("%s%s", name, sep);
 703                 nul = memchr(p, '\0', len);
 704                 fwrite(p, nul == NULL ? (int)len : nul - p, 1, stdout);
 705                 return (0);
 706
 707         case 'I':
 708                 if (!nflag)
 709                         printf("%s%s", name, sep);
 710                 fmt++;
 711                 spacer = "";
 712                 while (len >= sizeof(int)) {
 713                         if(*fmt == 'U')
 714                                 printf("%s%u", spacer, *(unsigned int *)p);
 715                         else if (*fmt == 'K' && *(int *)p >= 0)
 716                                 printf("%s%.1fC", spacer, (*(int *)p - 2732) / 10.0);
 717                         else
 718                                 printf("%s%d", spacer, *(int *)p);
 719                         spacer = " ";
 720                         len -= sizeof(int);
 721                         p += sizeof(int);
 722                 }
 723                 goto done;
 724
 725         case 'L':
 726                 if (!nflag)
 727                         printf("%s%s", name, sep);
 728                 fmt++;
 729                 spacer = "";
 730                 while (len >= sizeof(long)) {
 731                         if(*fmt == 'U')
 732                                 printf("%s%lu", spacer, *(unsigned long *)p);
 733                         else
 734                                 printf("%s%ld", spacer, *(long *)p);
 735                         spacer = " ";
 736                         len -= sizeof(long);
 737                         p += sizeof(long);
 738                 }
 739                 goto done;
 740
 741         case 'P':
 742                 if (!nflag)
 743                         printf("%s%s", name, sep);
 744                 printf("%p", *(void **)p);
 745                 goto done;
 746
 747         case 'Q':
 748                 if (!nflag)
 749                         printf("%s%s", name, sep);
 750                 fmt++;
 751                 spacer = "";
 752                 while (len >= sizeof(quad_t)) {
 753                         if(*fmt == 'U') {
 754                                 printf("%s%ju",
 755                                        spacer, (uintmax_t)*(u_quad_t *)p);
 756                         } else {
 757                                 printf("%s%jd",
 758                                        spacer, (intmax_t)*(quad_t *)p);
 759                         }
 760                         spacer = " ";
 761                         len -= sizeof(int64_t);
 762                         p += sizeof(int64_t);
 763                 }
 764                 goto done;
 765
 766         case 'T':
 767         case 'S':
 768                 if (!oflag && !xflag) {
 769                         i = 0;
 770                         if (strcmp(fmt, "S,clockinfo") == 0)
 771                                 func = S_clockinfo;
 772                         else if (strcmp(fmt, "S,timespec") == 0)
 773                                 func = S_timespec;
 774                         else if (strcmp(fmt, "S,timeval") == 0)
 775                                 func = S_timeval;
 776                         else if (strcmp(fmt, "S,loadavg") == 0)
 777                                 func = S_loadavg;
 778                         else if (strcmp(fmt, "S,sensor") == 0)
 779                                 func = S_sensor;
 780                         else if (strcmp(fmt, "T,dev_t") == 0)
 781                                 func = T_dev_t;
 782                         else if (strcmp(fmt, "T,udev_t") == 0)
 783                                 func = T_dev_t;
 784                         else
 785                                 func = NULL;
 786                         if (func) {
 787                                 if (!nflag)
 788                                         printf("%s%s", name, sep);
 789                                 error = (*func)(len, p);
 790                                 goto done;
 791                         }
 792                 }
 793                 /* FALL THROUGH */
 794         default:
 795                 if (!oflag && !xflag) {
 796                         error = 1;
 797                         goto done;
 798                 }
 799                 if (!nflag)
 800                         printf("%s%s", name, sep);
 801                 printf("Format:%s Length:%zu Dump:0x", fmt, len);
 802                 while (len-- && (xflag || p < val + 16))
 803                         printf("%02x", *p++);
 804                 if (!xflag && len > 16)
 805                         printf("...");
 806                 goto done;
 807         }
 808
 809 done:
 810         if (val != NULL)
 811                 free(val);
 812         return (error);
 813 }
 814
 815 static int
 816 sysctl_all(int *oid, size_t len)
 817 {
 818         int name1[22], name2[22];
 819         int retval;
 820         size_t i, l1, l2;
 821
 822         name1[0] = 0;
 823         name1[1] = 2;
 824         l1 = 2;
 825         if (len) {
 826                 memcpy(name1+2, oid, len * sizeof(int));
 827                 l1 += len;
 828         } else {
 829                 name1[2] = 1;
 830                 l1++;
 831         }
 832         for (;;) {
 833                 l2 = sizeof(name2);
 834                 retval = sysctl(name1, l1, name2, &l2, 0, 0);
 835                 if (retval < 0) {
 836                         if (errno == ENOENT)
 837                                 return 0;
 838                         else
 839                                 err(1, "sysctl(getnext) %d %zu", retval, l2);
 840                 }
 841
 842                 l2 /= sizeof(int);
 843
 844                 if (l2 < len)
 845                         return 0;
 846
 847                 for (i = 0; i < len; i++)
 848                         if (name2[i] != oid[i])
 849                                 return 0;
 850
 851                 retval = show_var(name2, l2);
 852                 if (retval == 0 && !bflag)
 853                         putchar('\n');
 854
 855                 memcpy(name1+2, name2, l2 * sizeof(int));
 856                 l1 = 2 + l2;
 857         }
 858 }