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  * 4. 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
  30 #ifndef lint
  31 static const char copyright[] =
  32 "@(#) Copyright (c) 1993\n\
  33         The Regents of the University of California.  All rights reserved.\n";
  34 #endif /* not lint */
  35
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)from: sysctl.c      8.1 (Berkeley) 6/6/93";
  39 #endif
  40 static const char rcsid[] =
  41   "$FreeBSD$";
  42 #endif /* not lint */
  43
  44 #include <sys/param.h>
  45 #include <sys/time.h>
  46 #include <sys/resource.h>
  47 #include <sys/stat.h>
  48 #include <sys/sysctl.h>
  49 #include <sys/vmmeter.h>
  50 #include <dev/evdev/input.h>
  51
  52 #ifdef __amd64__
  53 #include <sys/efi.h>
  54 #include <machine/metadata.h>
  55 #endif
  56
  57 #if defined(__amd64__) || defined(__i386__)
  58 #include <machine/pc/bios.h>
  59 #endif
  60
  61 #include <assert.h>
  62 #include <ctype.h>
  63 #include <err.h>
  64 #include <errno.h>
  65 #include <inttypes.h>
  66 #include <locale.h>
  67 #include <stdbool.h>
  68 #include <stdio.h>
  69 #include <stdlib.h>
  70 #include <string.h>
  71 #include <sysexits.h>
  72 #include <unistd.h>
  73
  74 static const char *conffile;
  75
  76 static int      aflag, bflag, Bflag, dflag, eflag, hflag, iflag;
  77 static int      Nflag, nflag, oflag, qflag, tflag, Tflag, Wflag, xflag;
  78
  79 static int      oidfmt(int *, int, char *, u_int *);
  80 static int      parsefile(const char *);
  81 static int      parse(const char *, int);
  82 static int      show_var(int *, int);
  83 static int      sysctl_all(int *oid, int len);
  84 static int      name2oid(const char *, int *);
  85
  86 static int      strIKtoi(const char *, char **, const char *);
  87
  88 static int ctl_sign[CTLTYPE+1] = {
  89         [CTLTYPE_INT] = 1,
  90         [CTLTYPE_LONG] = 1,
  91         [CTLTYPE_S8] = 1,
  92         [CTLTYPE_S16] = 1,
  93         [CTLTYPE_S32] = 1,
  94         [CTLTYPE_S64] = 1,
  95 };
  96
  97 static int ctl_size[CTLTYPE+1] = {
  98         [CTLTYPE_INT] = sizeof(int),
  99         [CTLTYPE_UINT] = sizeof(u_int),
 100         [CTLTYPE_LONG] = sizeof(long),
 101         [CTLTYPE_ULONG] = sizeof(u_long),
 102         [CTLTYPE_S8] = sizeof(int8_t),
 103         [CTLTYPE_S16] = sizeof(int16_t),
 104         [CTLTYPE_S32] = sizeof(int32_t),
 105         [CTLTYPE_S64] = sizeof(int64_t),
 106         [CTLTYPE_U8] = sizeof(uint8_t),
 107         [CTLTYPE_U16] = sizeof(uint16_t),
 108         [CTLTYPE_U32] = sizeof(uint32_t),
 109         [CTLTYPE_U64] = sizeof(uint64_t),
 110 };
 111
 112 static const char *ctl_typename[CTLTYPE+1] = {
 113         [CTLTYPE_INT] = "integer",
 114         [CTLTYPE_UINT] = "unsigned integer",
 115         [CTLTYPE_LONG] = "long integer",
 116         [CTLTYPE_ULONG] = "unsigned long",
 117         [CTLTYPE_U8] = "uint8_t",
 118         [CTLTYPE_U16] = "uint16_t",
 119         [CTLTYPE_U32] = "uint32_t",
 120         [CTLTYPE_U64] = "uint64_t",
 121         [CTLTYPE_S8] = "int8_t",
 122         [CTLTYPE_S16] = "int16_t",
 123         [CTLTYPE_S32] = "int32_t",
 124         [CTLTYPE_S64] = "int64_t",
 125         [CTLTYPE_NODE] = "node",
 126         [CTLTYPE_STRING] = "string",
 127         [CTLTYPE_OPAQUE] = "opaque",
 128 };
 129
 130 static void
 131 usage(void)
 132 {
 133
 134         (void)fprintf(stderr, "%s\n%s\n",
 135             "usage: sysctl [-bdehiNnoqTtWx] [ -B <bufsize> ] [-f filename] name[=value] ...",
 136             "       sysctl [-bdehNnoqTtWx] [ -B <bufsize> ] -a");
 137         exit(1);
 138 }
 139
 140 int
 141 main(int argc, char **argv)
 142 {
 143         int ch;
 144         int warncount = 0;
 145
 146         setlocale(LC_NUMERIC, "");
 147         setbuf(stdout,0);
 148         setbuf(stderr,0);
 149
 150         while ((ch = getopt(argc, argv, "AabB:def:hiNnoqtTwWxX")) != -1) {
 151                 switch (ch) {
 152                 case 'A':
 153                         /* compatibility */
 154                         aflag = oflag = 1;
 155                         break;
 156                 case 'a':
 157                         aflag = 1;
 158                         break;
 159                 case 'b':
 160                         bflag = 1;
 161                         break;
 162                 case 'B':
 163                         Bflag = strtol(optarg, NULL, 0);
 164                         break;
 165                 case 'd':
 166                         dflag = 1;
 167                         break;
 168                 case 'e':
 169                         eflag = 1;
 170                         break;
 171                 case 'f':
 172                         conffile = optarg;
 173                         break;
 174                 case 'h':
 175                         hflag = 1;
 176                         break;
 177                 case 'i':
 178                         iflag = 1;
 179                         break;
 180                 case 'N':
 181                         Nflag = 1;
 182                         break;
 183                 case 'n':
 184                         nflag = 1;
 185                         break;
 186                 case 'o':
 187                         oflag = 1;
 188                         break;
 189                 case 'q':
 190                         qflag = 1;
 191                         break;
 192                 case 't':
 193                         tflag = 1;
 194                         break;
 195                 case 'T':
 196                         Tflag = 1;
 197                         break;
 198                 case 'w':
 199                         /* compatibility */
 200                         /* ignored */
 201                         break;
 202                 case 'W':
 203                         Wflag = 1;
 204                         break;
 205                 case 'X':
 206                         /* compatibility */
 207                         aflag = xflag = 1;
 208                         break;
 209                 case 'x':
 210                         xflag = 1;
 211                         break;
 212                 default:
 213                         usage();
 214                 }
 215         }
 216         argc -= optind;
 217         argv += optind;
 218
 219         if (Nflag && nflag)
 220                 usage();
 221         if (aflag && argc == 0)
 222                 exit(sysctl_all(0, 0));
 223         if (argc == 0 && conffile == NULL)
 224                 usage();
 225
 226         warncount = 0;
 227         if (conffile != NULL)
 228                 warncount += parsefile(conffile);
 229
 230         while (argc-- > 0)
 231                 warncount += parse(*argv++, 0);
 232
 233         return (warncount);
 234 }
 235
 236 /*
 237  * Parse a single numeric value, append it to 'newbuf', and update
 238  * 'newsize'.  Returns true if the value was parsed and false if the
 239  * value was invalid.  Non-numeric types (strings) are handled
 240  * directly in parse().
 241  */
 242 static bool
 243 parse_numeric(const char *newvalstr, const char *fmt, u_int kind,
 244     void **newbufp, size_t *newsizep)
 245 {
 246         void *newbuf;
 247         const void *newval;
 248         int8_t i8val;
 249         uint8_t u8val;
 250         int16_t i16val;
 251         uint16_t u16val;
 252         int32_t i32val;
 253         uint32_t u32val;
 254         int intval;
 255         unsigned int uintval;
 256         long longval;
 257         unsigned long ulongval;
 258         int64_t i64val;
 259         uint64_t u64val;
 260         size_t valsize;
 261         char *endptr = NULL;
 262
 263         errno = 0;
 264
 265         switch (kind & CTLTYPE) {
 266         case CTLTYPE_INT:
 267                 if (strncmp(fmt, "IK", 2) == 0)
 268                         intval = strIKtoi(newvalstr, &endptr, fmt);
 269                 else
 270                         intval = (int)strtol(newvalstr, &endptr, 0);
 271                 newval = &intval;
 272                 valsize = sizeof(intval);
 273                 break;
 274         case CTLTYPE_UINT:
 275                 uintval = (int) strtoul(newvalstr, &endptr, 0);
 276                 newval = &uintval;
 277                 valsize = sizeof(uintval);
 278                 break;
 279         case CTLTYPE_LONG:
 280                 longval = strtol(newvalstr, &endptr, 0);
 281                 newval = &longval;
 282                 valsize = sizeof(longval);
 283                 break;
 284         case CTLTYPE_ULONG:
 285                 ulongval = strtoul(newvalstr, &endptr, 0);
 286                 newval = &ulongval;
 287                 valsize = sizeof(ulongval);
 288                 break;
 289         case CTLTYPE_S8:
 290                 i8val = (int8_t)strtol(newvalstr, &endptr, 0);
 291                 newval = &i8val;
 292                 valsize = sizeof(i8val);
 293                 break;
 294         case CTLTYPE_S16:
 295                 i16val = (int16_t)strtol(newvalstr, &endptr, 0);
 296                 newval = &i16val;
 297                 valsize = sizeof(i16val);
 298                 break;
 299         case CTLTYPE_S32:
 300                 i32val = (int32_t)strtol(newvalstr, &endptr, 0);
 301                 newval = &i32val;
 302                 valsize = sizeof(i32val);
 303                 break;
 304         case CTLTYPE_S64:
 305                 i64val = strtoimax(newvalstr, &endptr, 0);
 306                 newval = &i64val;
 307                 valsize = sizeof(i64val);
 308                 break;
 309         case CTLTYPE_U8:
 310                 u8val = (uint8_t)strtoul(newvalstr, &endptr, 0);
 311                 newval = &u8val;
 312                 valsize = sizeof(u8val);
 313                 break;
 314         case CTLTYPE_U16:
 315                 u16val = (uint16_t)strtoul(newvalstr, &endptr, 0);
 316                 newval = &u16val;
 317                 valsize = sizeof(u16val);
 318                 break;
 319         case CTLTYPE_U32:
 320                 u32val = (uint32_t)strtoul(newvalstr, &endptr, 0);
 321                 newval = &u32val;
 322                 valsize = sizeof(u32val);
 323                 break;
 324         case CTLTYPE_U64:
 325                 u64val = strtoumax(newvalstr, &endptr, 0);
 326                 newval = &u64val;
 327                 valsize = sizeof(u64val);
 328                 break;
 329         default:
 330                 /* NOTREACHED */
 331                 abort();
 332         }
 333
 334         if (errno != 0 || endptr == newvalstr ||
 335             (endptr != NULL && *endptr != '\0'))
 336                 return (false);
 337
 338         newbuf = realloc(*newbufp, *newsizep + valsize);
 339         if (newbuf == NULL)
 340                 err(1, "out of memory");
 341         memcpy((char *)newbuf + *newsizep, newval, valsize);
 342         *newbufp = newbuf;
 343         *newsizep += valsize;
 344
 345         return (true);
 346 }
 347
 348 /*
 349  * Parse a name into a MIB entry.
 350  * Lookup and print out the MIB entry if it exists.
 351  * Set a new value if requested.
 352  */
 353 static int
 354 parse(const char *string, int lineno)
 355 {
 356         int len, i, j;
 357         const void *newval;
 358         char *newvalstr = NULL;
 359         void *newbuf;
 360         size_t newsize = Bflag;
 361         int mib[CTL_MAXNAME];
 362         char *cp, *bufp, buf[BUFSIZ], fmt[BUFSIZ], line[BUFSIZ];
 363         u_int kind;
 364
 365         if (lineno)
 366                 snprintf(line, sizeof(line), " at line %d", lineno);
 367         else
 368                 line[0] = '\0';
 369
 370         cp = buf;
 371         if (snprintf(buf, BUFSIZ, "%s", string) >= BUFSIZ) {
 372                 warnx("oid too long: '%s'%s", string, line);
 373                 return (1);
 374         }
 375         bufp = strsep(&cp, "=:");
 376         if (cp != NULL) {
 377                 /* Tflag just lists tunables, do not allow assignment */
 378                 if (Tflag || Wflag) {
 379                         warnx("Can't set variables when using -T or -W");
 380                         usage();
 381                 }
 382                 while (isspace(*cp))
 383                         cp++;
 384                 /* Strip a pair of " or ' if any. */
 385                 switch (*cp) {
 386                 case '\"':
 387                 case '\'':
 388                         if (cp[strlen(cp) - 1] == *cp)
 389                                 cp[strlen(cp) - 1] = '\0';
 390                         cp++;
 391                 }
 392                 newvalstr = cp;
 393                 newsize = strlen(cp);
 394         }
 395         /* Trim spaces */
 396         cp = bufp + strlen(bufp) - 1;
 397         while (cp >= bufp && isspace((int)*cp)) {
 398                 *cp = '\0';
 399                 cp--;
 400         }
 401         len = name2oid(bufp, mib);
 402
 403         if (len < 0) {
 404                 if (iflag)
 405                         return (0);
 406                 if (qflag)
 407                         return (1);
 408                 else {
 409                         if (errno == ENOENT) {
 410                                 warnx("unknown oid '%s'%s", bufp, line);
 411                         } else {
 412                                 warn("unknown oid '%s'%s", bufp, line);
 413                         }
 414                         return (1);
 415                 }
 416         }
 417
 418         if (oidfmt(mib, len, fmt, &kind)) {
 419                 warn("couldn't find format of oid '%s'%s", bufp, line);
 420                 if (iflag)
 421                         return (1);
 422                 else
 423                         exit(1);
 424         }
 425
 426         if (newvalstr == NULL || dflag) {
 427                 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
 428                         if (dflag) {
 429                                 i = show_var(mib, len);
 430                                 if (!i && !bflag)
 431                                         putchar('\n');
 432                         }
 433                         sysctl_all(mib, len);
 434                 } else {
 435                         i = show_var(mib, len);
 436                         if (!i && !bflag)
 437                                 putchar('\n');
 438                 }
 439         } else {
 440                 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
 441                         warnx("oid '%s' isn't a leaf node%s", bufp, line);
 442                         return (1);
 443                 }
 444
 445                 if (!(kind & CTLFLAG_WR)) {
 446                         if (kind & CTLFLAG_TUN) {
 447                                 warnx("oid '%s' is a read only tunable%s", bufp, line);
 448                                 warnx("Tunable values are set in /boot/loader.conf");
 449                         } else
 450                                 warnx("oid '%s' is read only%s", bufp, line);
 451                         return (1);
 452                 }
 453
 454                 switch (kind & CTLTYPE) {
 455                 case CTLTYPE_INT:
 456                 case CTLTYPE_UINT:
 457                 case CTLTYPE_LONG:
 458                 case CTLTYPE_ULONG:
 459                 case CTLTYPE_S8:
 460                 case CTLTYPE_S16:
 461                 case CTLTYPE_S32:
 462                 case CTLTYPE_S64:
 463                 case CTLTYPE_U8:
 464                 case CTLTYPE_U16:
 465                 case CTLTYPE_U32:
 466                 case CTLTYPE_U64:
 467                         if (strlen(newvalstr) == 0) {
 468                                 warnx("empty numeric value");
 469                                 return (1);
 470                         }
 471                         /* FALLTHROUGH */
 472                 case CTLTYPE_STRING:
 473                         break;
 474                 default:
 475                         warnx("oid '%s' is type %d,"
 476                                 " cannot set that%s", bufp,
 477                                 kind & CTLTYPE, line);
 478                         return (1);
 479                 }
 480
 481                 newbuf = NULL;
 482
 483                 switch (kind & CTLTYPE) {
 484                 case CTLTYPE_STRING:
 485                         newval = newvalstr;
 486                         break;
 487                 default:
 488                         newsize = 0;
 489                         while ((cp = strsep(&newvalstr, " ,")) != NULL) {
 490                                 if (*cp == '\0')
 491                                         continue;
 492                                 if (!parse_numeric(cp, fmt, kind, &newbuf,
 493                                     &newsize)) {
 494                                         warnx("invalid %s '%s'%s",
 495                                             ctl_typename[kind & CTLTYPE],
 496                                             cp, line);
 497                                         free(newbuf);
 498                                         return (1);
 499                                 }
 500                         }
 501                         newval = newbuf;
 502                         break;
 503                 }
 504
 505                 i = show_var(mib, len);
 506                 if (sysctl(mib, len, 0, 0, newval, newsize) == -1) {
 507                         free(newbuf);
 508                         if (!i && !bflag)
 509                                 putchar('\n');
 510                         switch (errno) {
 511                         case EOPNOTSUPP:
 512                                 warnx("%s: value is not available%s",
 513                                         string, line);
 514                                 return (1);
 515                         case ENOTDIR:
 516                                 warnx("%s: specification is incomplete%s",
 517                                         string, line);
 518                                 return (1);
 519                         case ENOMEM:
 520                                 warnx("%s: type is unknown to this program%s",
 521                                         string, line);
 522                                 return (1);
 523                         default:
 524                                 warn("%s%s", string, line);
 525                                 return (1);
 526                         }
 527                 }
 528                 free(newbuf);
 529                 if (!bflag)
 530                         printf(" -> ");
 531                 i = nflag;
 532                 nflag = 1;
 533                 j = show_var(mib, len);
 534                 if (!j && !bflag)
 535                         putchar('\n');
 536                 nflag = i;
 537         }
 538
 539         return (0);
 540 }
 541
 542 static int
 543 parsefile(const char *filename)
 544 {
 545         FILE *file;
 546         char line[BUFSIZ], *p, *pq, *pdq;
 547         int warncount = 0, lineno = 0;
 548
 549         file = fopen(filename, "r");
 550         if (file == NULL)
 551                 err(EX_NOINPUT, "%s", filename);
 552         while (fgets(line, sizeof(line), file) != NULL) {
 553                 lineno++;
 554                 p = line;
 555                 pq = strchr(line, '\'');
 556                 pdq = strchr(line, '\"');
 557                 /* Replace the first # with \0. */
 558                 while((p = strchr(p, '#')) != NULL) {
 559                         if (pq != NULL && p > pq) {
 560                                 if ((p = strchr(pq+1, '\'')) != NULL)
 561                                         *(++p) = '\0';
 562                                 break;
 563                         } else if (pdq != NULL && p > pdq) {
 564                                 if ((p = strchr(pdq+1, '\"')) != NULL)
 565                                         *(++p) = '\0';
 566                                 break;
 567                         } else if (p == line || *(p-1) != '\\') {
 568                                 *p = '\0';
 569                                 break;
 570                         }
 571                         p++;
 572                 }
 573                 /* Trim spaces */
 574                 p = line + strlen(line) - 1;
 575                 while (p >= line && isspace((int)*p)) {
 576                         *p = '\0';
 577                         p--;
 578                 }
 579                 p = line;
 580                 while (isspace((int)*p))
 581                         p++;
 582                 if (*p == '\0')
 583                         continue;
 584                 else
 585                         warncount += parse(p, lineno);
 586         }
 587         fclose(file);
 588
 589         return (warncount);
 590 }
 591
 592 /* These functions will dump out various interesting structures. */
 593
 594 static int
 595 S_clockinfo(size_t l2, void *p)
 596 {
 597         struct clockinfo *ci = (struct clockinfo*)p;
 598
 599         if (l2 != sizeof(*ci)) {
 600                 warnx("S_clockinfo %zu != %zu", l2, sizeof(*ci));
 601                 return (1);
 602         }
 603         printf(hflag ? "{ hz = %'d, tick = %'d, profhz = %'d, stathz = %'d }" :
 604                 "{ hz = %d, tick = %d, profhz = %d, stathz = %d }",
 605                 ci->hz, ci->tick, ci->profhz, ci->stathz);
 606         return (0);
 607 }
 608
 609 static int
 610 S_loadavg(size_t l2, void *p)
 611 {
 612         struct loadavg *tv = (struct loadavg*)p;
 613
 614         if (l2 != sizeof(*tv)) {
 615                 warnx("S_loadavg %zu != %zu", l2, sizeof(*tv));
 616                 return (1);
 617         }
 618         printf(hflag ? "{ %'.2f %'.2f %'.2f }" : "{ %.2f %.2f %.2f }",
 619                 (double)tv->ldavg[0]/(double)tv->fscale,
 620                 (double)tv->ldavg[1]/(double)tv->fscale,
 621                 (double)tv->ldavg[2]/(double)tv->fscale);
 622         return (0);
 623 }
 624
 625 static int
 626 S_timeval(size_t l2, void *p)
 627 {
 628         struct timeval *tv = (struct timeval*)p;
 629         time_t tv_sec;
 630         char *p1, *p2;
 631
 632         if (l2 != sizeof(*tv)) {
 633                 warnx("S_timeval %zu != %zu", l2, sizeof(*tv));
 634                 return (1);
 635         }
 636         printf(hflag ? "{ sec = %'jd, usec = %'ld } " :
 637                 "{ sec = %jd, usec = %ld } ",
 638                 (intmax_t)tv->tv_sec, tv->tv_usec);
 639         tv_sec = tv->tv_sec;
 640         p1 = strdup(ctime(&tv_sec));
 641         for (p2=p1; *p2 ; p2++)
 642                 if (*p2 == '\n')
 643                         *p2 = '\0';
 644         fputs(p1, stdout);
 645         free(p1);
 646         return (0);
 647 }
 648
 649 static int
 650 S_vmtotal(size_t l2, void *p)
 651 {
 652         struct vmtotal *v = (struct vmtotal *)p;
 653         int pageKilo = getpagesize() / 1024;
 654
 655         if (l2 != sizeof(*v)) {
 656                 warnx("S_vmtotal %zu != %zu", l2, sizeof(*v));
 657                 return (1);
 658         }
 659
 660         printf(
 661             "\nSystem wide totals computed every five seconds:"
 662             " (values in kilobytes)\n");
 663         printf("===============================================\n");
 664         printf(
 665             "Processes:\t\t(RUNQ: %hd Disk Wait: %hd Page Wait: "
 666             "%hd Sleep: %hd)\n",
 667             v->t_rq, v->t_dw, v->t_pw, v->t_sl);
 668         printf(
 669             "Virtual Memory:\t\t(Total: %jdK Active: %jdK)\n",
 670             (intmax_t)v->t_vm * pageKilo, (intmax_t)v->t_avm * pageKilo);
 671         printf("Real Memory:\t\t(Total: %jdK Active: %jdK)\n",
 672             (intmax_t)v->t_rm * pageKilo, (intmax_t)v->t_arm * pageKilo);
 673         printf("Shared Virtual Memory:\t(Total: %jdK Active: %jdK)\n",
 674             (intmax_t)v->t_vmshr * pageKilo, (intmax_t)v->t_avmshr * pageKilo);
 675         printf("Shared Real Memory:\t(Total: %jdK Active: %jdK)\n",
 676             (intmax_t)v->t_rmshr * pageKilo, (intmax_t)v->t_armshr * pageKilo);
 677         printf("Free Memory:\t%jdK", (intmax_t)v->t_free * pageKilo);
 678
 679         return (0);
 680 }
 681
 682 static int
 683 S_input_id(size_t l2, void *p)
 684 {
 685         struct input_id *id = p;
 686
 687         if (l2 != sizeof(*id)) {
 688                 warnx("S_input_id %zu != %zu", l2, sizeof(*id));
 689                 return (1);
 690         }
 691
 692         printf("{ bustype = 0x%04x, vendor = 0x%04x, "
 693             "product = 0x%04x, version = 0x%04x }",
 694             id->bustype, id->vendor, id->product, id->version);
 695         return (0);
 696 }
 697
 698 #ifdef __amd64__
 699 static int
 700 S_efi_map(size_t l2, void *p)
 701 {
 702         struct efi_map_header *efihdr;
 703         struct efi_md *map;
 704         const char *type;
 705         size_t efisz;
 706         int ndesc, i;
 707
 708         static const char * const types[] = {
 709                 [EFI_MD_TYPE_NULL] =    "Reserved",
 710                 [EFI_MD_TYPE_CODE] =    "LoaderCode",
 711                 [EFI_MD_TYPE_DATA] =    "LoaderData",
 712                 [EFI_MD_TYPE_BS_CODE] = "BootServicesCode",
 713                 [EFI_MD_TYPE_BS_DATA] = "BootServicesData",
 714                 [EFI_MD_TYPE_RT_CODE] = "RuntimeServicesCode",
 715                 [EFI_MD_TYPE_RT_DATA] = "RuntimeServicesData",
 716                 [EFI_MD_TYPE_FREE] =    "ConventionalMemory",
 717                 [EFI_MD_TYPE_BAD] =     "UnusableMemory",
 718                 [EFI_MD_TYPE_RECLAIM] = "ACPIReclaimMemory",
 719                 [EFI_MD_TYPE_FIRMWARE] = "ACPIMemoryNVS",
 720                 [EFI_MD_TYPE_IOMEM] =   "MemoryMappedIO",
 721                 [EFI_MD_TYPE_IOPORT] =  "MemoryMappedIOPortSpace",
 722                 [EFI_MD_TYPE_PALCODE] = "PalCode",
 723                 [EFI_MD_TYPE_PERSISTENT] = "PersistentMemory",
 724         };
 725
 726         /*
 727          * Memory map data provided by UEFI via the GetMemoryMap
 728          * Boot Services API.
 729          */
 730         if (l2 < sizeof(*efihdr)) {
 731                 warnx("S_efi_map length less than header");
 732                 return (1);
 733         }
 734         efihdr = p;
 735         efisz = (sizeof(struct efi_map_header) + 0xf) & ~0xf;
 736         map = (struct efi_md *)((uint8_t *)efihdr + efisz);
 737
 738         if (efihdr->descriptor_size == 0)
 739                 return (0);
 740         if (l2 != efisz + efihdr->memory_size) {
 741                 warnx("S_efi_map length mismatch %zu vs %zu", l2, efisz +
 742                     efihdr->memory_size);
 743                 return (1);
 744         }
 745         ndesc = efihdr->memory_size / efihdr->descriptor_size;
 746
 747         printf("\n%23s %12s %12s %8s %4s",
 748             "Type", "Physical", "Virtual", "#Pages", "Attr");
 749
 750         for (i = 0; i < ndesc; i++,
 751             map = efi_next_descriptor(map, efihdr->descriptor_size)) {
 752                 type = NULL;
 753                 if (map->md_type < nitems(types))
 754                         type = types[map->md_type];
 755                 if (type == NULL)
 756                         type = "<INVALID>";
 757                 printf("\n%23s %012lx %12p %08lx ", type, map->md_phys,
 758                     map->md_virt, map->md_pages);
 759                 if (map->md_attr & EFI_MD_ATTR_UC)
 760                         printf("UC ");
 761                 if (map->md_attr & EFI_MD_ATTR_WC)
 762                         printf("WC ");
 763                 if (map->md_attr & EFI_MD_ATTR_WT)
 764                         printf("WT ");
 765                 if (map->md_attr & EFI_MD_ATTR_WB)
 766                         printf("WB ");
 767                 if (map->md_attr & EFI_MD_ATTR_UCE)
 768                         printf("UCE ");
 769                 if (map->md_attr & EFI_MD_ATTR_WP)
 770                         printf("WP ");
 771                 if (map->md_attr & EFI_MD_ATTR_RP)
 772                         printf("RP ");
 773                 if (map->md_attr & EFI_MD_ATTR_XP)
 774                         printf("XP ");
 775                 if (map->md_attr & EFI_MD_ATTR_RT)
 776                         printf("RUNTIME");
 777         }
 778         return (0);
 779 }
 780 #endif
 781
 782 #if defined(__amd64__) || defined(__i386__)
 783 static int
 784 S_bios_smap_xattr(size_t l2, void *p)
 785 {
 786         struct bios_smap_xattr *smap, *end;
 787
 788         if (l2 % sizeof(*smap) != 0) {
 789                 warnx("S_bios_smap_xattr %zu is not a multiple of %zu", l2,
 790                     sizeof(*smap));
 791                 return (1);
 792         }
 793
 794         end = (struct bios_smap_xattr *)((char *)p + l2);
 795         for (smap = p; smap < end; smap++)
 796                 printf("\nSMAP type=%02x, xattr=%02x, base=%016jx, len=%016jx",
 797                     smap->type, smap->xattr, (uintmax_t)smap->base,
 798                     (uintmax_t)smap->length);
 799         return (0);
 800 }
 801 #endif
 802
 803 static int
 804 strIKtoi(const char *str, char **endptrp, const char *fmt)
 805 {
 806         int kelv;
 807         float temp;
 808         size_t len;
 809         const char *p;
 810         int prec, i;
 811
 812         assert(errno == 0);
 813
 814         len = strlen(str);
 815         /* caller already checked this */
 816         assert(len > 0);
 817
 818         /*
 819          * A format of "IK" is in deciKelvin. A format of "IK3" is in
 820          * milliKelvin. The single digit following IK is log10 of the
 821          * multiplying factor to convert Kelvin into the untis of this sysctl,
 822          * or the dividing factor to convert the sysctl value to Kelvin. Numbers
 823          * larger than 6 will run into precision issues with 32-bit integers.
 824          * Characters that aren't ASCII digits after the 'K' are ignored. No
 825          * localization is present because this is an interface from the kernel
 826          * to this program (eg not an end-user interface), so isdigit() isn't
 827          * used here.
 828          */
 829         if (fmt[2] != '\0' && fmt[2] >= '0' && fmt[2] <= '9')
 830                 prec = fmt[2] - '0';
 831         else
 832                 prec = 1;
 833         p = &str[len - 1];
 834         if (*p == 'C' || *p == 'F' || *p == 'K') {
 835                 temp = strtof(str, endptrp);
 836                 if (*endptrp != str && *endptrp == p && errno == 0) {
 837                         if (*p == 'F')
 838                                 temp = (temp - 32) * 5 / 9;
 839                         *endptrp = NULL;
 840                         if (*p != 'K')
 841                                 temp += 273.15;
 842                         for (i = 0; i < prec; i++)
 843                                 temp *= 10.0;
 844                         return ((int)(temp + 0.5));
 845                 }
 846         } else {
 847                 /* No unit specified -> treat it as a raw number */
 848                 kelv = (int)strtol(str, endptrp, 10);
 849                 if (*endptrp != str && *endptrp == p && errno == 0) {
 850                         *endptrp = NULL;
 851                         return (kelv);
 852                 }
 853         }
 854
 855         errno = ERANGE;
 856         return (0);
 857 }
 858
 859 /*
 860  * These functions uses a presently undocumented interface to the kernel
 861  * to walk the tree and get the type so it can print the value.
 862  * This interface is under work and consideration, and should probably
 863  * be killed with a big axe by the first person who can find the time.
 864  * (be aware though, that the proper interface isn't as obvious as it
 865  * may seem, there are various conflicting requirements.
 866  */
 867
 868 static int
 869 name2oid(const char *name, int *oidp)
 870 {
 871         int oid[2];
 872         int i;
 873         size_t j;
 874
 875         oid[0] = 0;
 876         oid[1] = 3;
 877
 878         j = CTL_MAXNAME * sizeof(int);
 879         i = sysctl(oid, 2, oidp, &j, name, strlen(name));
 880         if (i < 0)
 881                 return (i);
 882         j /= sizeof(int);
 883         return (j);
 884 }
 885
 886 static int
 887 oidfmt(int *oid, int len, char *fmt, u_int *kind)
 888 {
 889         int qoid[CTL_MAXNAME+2];
 890         u_char buf[BUFSIZ];
 891         int i;
 892         size_t j;
 893
 894         qoid[0] = 0;
 895         qoid[1] = 4;
 896         memcpy(qoid + 2, oid, len * sizeof(int));
 897
 898         j = sizeof(buf);
 899         i = sysctl(qoid, len + 2, buf, &j, 0, 0);
 900         if (i)
 901                 err(1, "sysctl fmt %d %zu %d", i, j, errno);
 902
 903         if (kind)
 904                 *kind = *(u_int *)buf;
 905
 906         if (fmt)
 907                 strcpy(fmt, (char *)(buf + sizeof(u_int)));
 908         return (0);
 909 }
 910
 911 /*
 912  * This formats and outputs the value of one variable
 913  *
 914  * Returns zero if anything was actually output.
 915  * Returns one if didn't know what to do with this.
 916  * Return minus one if we had errors.
 917  */
 918 static int
 919 show_var(int *oid, int nlen)
 920 {
 921         u_char buf[BUFSIZ], *val, *oval, *p;
 922         char name[BUFSIZ], fmt[BUFSIZ];
 923         const char *sep, *sep1, *prntype;
 924         int qoid[CTL_MAXNAME+2];
 925         uintmax_t umv;
 926         intmax_t mv;
 927         int i, hexlen, sign, ctltype;
 928         size_t intlen;
 929         size_t j, len;
 930         u_int kind;
 931         float base;
 932         int (*func)(size_t, void *);
 933         int prec;
 934
 935         /* Silence GCC. */
 936         umv = mv = intlen = 0;
 937
 938         bzero(buf, BUFSIZ);
 939         bzero(fmt, BUFSIZ);
 940         bzero(name, BUFSIZ);
 941         qoid[0] = 0;
 942         memcpy(qoid + 2, oid, nlen * sizeof(int));
 943
 944         qoid[1] = 1;
 945         j = sizeof(name);
 946         i = sysctl(qoid, nlen + 2, name, &j, 0, 0);
 947         if (i || !j)
 948                 err(1, "sysctl name %d %zu %d", i, j, errno);
 949
 950         oidfmt(oid, nlen, fmt, &kind);
 951         /* if Wflag then only list sysctls that are writeable and not stats. */
 952         if (Wflag && ((kind & CTLFLAG_WR) == 0 || (kind & CTLFLAG_STATS) != 0))
 953                 return 1;
 954
 955         /* if Tflag then only list sysctls that are tuneables. */
 956         if (Tflag && (kind & CTLFLAG_TUN) == 0)
 957                 return 1;
 958
 959         if (Nflag) {
 960                 printf("%s", name);
 961                 return (0);
 962         }
 963
 964         if (eflag)
 965                 sep = "=";
 966         else
 967                 sep = ": ";
 968
 969         ctltype = (kind & CTLTYPE);
 970         if (tflag || dflag) {
 971                 if (!nflag)
 972                         printf("%s%s", name, sep);
 973                 if (ctl_typename[ctltype] != NULL)
 974                         prntype = ctl_typename[ctltype];
 975                 else
 976                         prntype = "unknown";
 977                 if (tflag && dflag)
 978                         printf("%s%s", prntype, sep);
 979                 else if (tflag) {
 980                         printf("%s", prntype);
 981                         return (0);
 982                 }
 983                 qoid[1] = 5;
 984                 j = sizeof(buf);
 985                 i = sysctl(qoid, nlen + 2, buf, &j, 0, 0);
 986                 printf("%s", buf);
 987                 return (0);
 988         }
 989         /* find an estimate of how much we need for this var */
 990         if (Bflag)
 991                 j = Bflag;
 992         else {
 993                 j = 0;
 994                 i = sysctl(oid, nlen, 0, &j, 0, 0);
 995                 j += j; /* we want to be sure :-) */
 996         }
 997
 998         val = oval = malloc(j + 1);
 999         if (val == NULL) {
1000                 warnx("malloc failed");
1001                 return (1);
1002         }
1003         len = j;
1004         i = sysctl(oid, nlen, val, &len, 0, 0);
1005         if (i != 0 || (len == 0 && ctltype != CTLTYPE_STRING)) {
1006                 free(oval);
1007                 return (1);
1008         }
1009
1010         if (bflag) {
1011                 fwrite(val, 1, len, stdout);
1012                 free(oval);
1013                 return (0);
1014         }
1015         val[len] = '\0';
1016         p = val;
1017         sign = ctl_sign[ctltype];
1018         intlen = ctl_size[ctltype];
1019
1020         switch (ctltype) {
1021         case CTLTYPE_STRING:
1022                 if (!nflag)
1023                         printf("%s%s", name, sep);
1024                 printf("%.*s", (int)len, p);
1025                 free(oval);
1026                 return (0);
1027
1028         case CTLTYPE_INT:
1029         case CTLTYPE_UINT:
1030         case CTLTYPE_LONG:
1031         case CTLTYPE_ULONG:
1032         case CTLTYPE_S8:
1033         case CTLTYPE_S16:
1034         case CTLTYPE_S32:
1035         case CTLTYPE_S64:
1036         case CTLTYPE_U8:
1037         case CTLTYPE_U16:
1038         case CTLTYPE_U32:
1039         case CTLTYPE_U64:
1040                 if (!nflag)
1041                         printf("%s%s", name, sep);
1042                 hexlen = 2 + (intlen * CHAR_BIT + 3) / 4;
1043                 sep1 = "";
1044                 while (len >= intlen) {
1045                         switch (kind & CTLTYPE) {
1046                         case CTLTYPE_INT:
1047                         case CTLTYPE_UINT:
1048                                 umv = *(u_int *)p;
1049                                 mv = *(int *)p;
1050                                 break;
1051                         case CTLTYPE_LONG:
1052                         case CTLTYPE_ULONG:
1053                                 umv = *(u_long *)p;
1054                                 mv = *(long *)p;
1055                                 break;
1056                         case CTLTYPE_S8:
1057                         case CTLTYPE_U8:
1058                                 umv = *(uint8_t *)p;
1059                                 mv = *(int8_t *)p;
1060                                 break;
1061                         case CTLTYPE_S16:
1062                         case CTLTYPE_U16:
1063                                 umv = *(uint16_t *)p;
1064                                 mv = *(int16_t *)p;
1065                                 break;
1066                         case CTLTYPE_S32:
1067                         case CTLTYPE_U32:
1068                                 umv = *(uint32_t *)p;
1069                                 mv = *(int32_t *)p;
1070                                 break;
1071                         case CTLTYPE_S64:
1072                         case CTLTYPE_U64:
1073                                 umv = *(uint64_t *)p;
1074                                 mv = *(int64_t *)p;
1075                                 break;
1076                         }
1077                         fputs(sep1, stdout);
1078                         if (xflag)
1079                                 printf("%#0*jx", hexlen, umv);
1080                         else if (!sign)
1081                                 printf(hflag ? "%'ju" : "%ju", umv);
1082                         else if (fmt[1] == 'K') {
1083                                 if (mv < 0)
1084                                         printf("%jd", mv);
1085                                 else {
1086                                         /*
1087                                          * See strIKtoi for details on fmt.
1088                                          */
1089                                         prec = 1;
1090                                         if (fmt[2] != '\0')
1091                                                 prec = fmt[2] - '0';
1092                                         base = 1.0;
1093                                         for (int i = 0; i < prec; i++)
1094                                                 base *= 10.0;
1095                                         printf("%.*fC", prec,
1096                                             (float)mv / base - 273.15);
1097                                 }
1098                         } else
1099                                 printf(hflag ? "%'jd" : "%jd", mv);
1100                         sep1 = " ";
1101                         len -= intlen;
1102                         p += intlen;
1103                 }
1104                 free(oval);
1105                 return (0);
1106
1107         case CTLTYPE_OPAQUE:
1108                 i = 0;
1109                 if (strcmp(fmt, "S,clockinfo") == 0)
1110                         func = S_clockinfo;
1111                 else if (strcmp(fmt, "S,timeval") == 0)
1112                         func = S_timeval;
1113                 else if (strcmp(fmt, "S,loadavg") == 0)
1114                         func = S_loadavg;
1115                 else if (strcmp(fmt, "S,vmtotal") == 0)
1116                         func = S_vmtotal;
1117                 else if (strcmp(fmt, "S,input_id") == 0)
1118                         func = S_input_id;
1119 #ifdef __amd64__
1120                 else if (strcmp(fmt, "S,efi_map_header") == 0)
1121                         func = S_efi_map;
1122 #endif
1123 #if defined(__amd64__) || defined(__i386__)
1124                 else if (strcmp(fmt, "S,bios_smap_xattr") == 0)
1125                         func = S_bios_smap_xattr;
1126 #endif
1127                 else
1128                         func = NULL;
1129                 if (func) {
1130                         if (!nflag)
1131                                 printf("%s%s", name, sep);
1132                         i = (*func)(len, p);
1133                         free(oval);
1134                         return (i);
1135                 }
1136                 /* FALLTHROUGH */
1137         default:
1138                 if (!oflag && !xflag) {
1139                         free(oval);
1140                         return (1);
1141                 }
1142                 if (!nflag)
1143                         printf("%s%s", name, sep);
1144                 printf("Format:%s Length:%zu Dump:0x", fmt, len);
1145                 while (len-- && (xflag || p < val + 16))
1146                         printf("%02x", *p++);
1147                 if (!xflag && len > 16)
1148                         printf("...");
1149                 free(oval);
1150                 return (0);
1151         }
1152         free(oval);
1153         return (1);
1154 }
1155
1156 static int
1157 sysctl_all(int *oid, int len)
1158 {
1159         int name1[22], name2[22];
1160         int i, j;
1161         size_t l1, l2;
1162
1163         name1[0] = 0;
1164         name1[1] = 2;
1165         l1 = 2;
1166         if (len) {
1167                 memcpy(name1+2, oid, len * sizeof(int));
1168                 l1 += len;
1169         } else {
1170                 name1[2] = 1;
1171                 l1++;
1172         }
1173         for (;;) {
1174                 l2 = sizeof(name2);
1175                 j = sysctl(name1, l1, name2, &l2, 0, 0);
1176                 if (j < 0) {
1177                         if (errno == ENOENT)
1178                                 return (0);
1179                         else
1180                                 err(1, "sysctl(getnext) %d %zu", j, l2);
1181                 }
1182
1183                 l2 /= sizeof(int);
1184
1185                 if (len < 0 || l2 < (unsigned int)len)
1186                         return (0);
1187
1188                 for (i = 0; i < len; i++)
1189                         if (name2[i] != oid[i])
1190                                 return (0);
1191
1192                 i = show_var(name2, l2);
1193                 if (!i && !bflag)
1194                         putchar('\n');
1195
1196                 memcpy(name1+2, name2, l2 * sizeof(int));
1197                 l1 = 2 + l2;
1198         }
1199 }