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