sbin/sysctl/sysctl.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-3-Clause
   3  *
   4  * Copyright (c) 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #ifndef lint
  33 static const char copyright[] =
  34 "@(#) Copyright (c) 1993\n\
  35         The Regents of the University of California.  All rights reserved.\n";
  36 #endif /* not lint */
  37
  38 #ifndef lint
  39 #if 0
  40 static char sccsid[] = "@(#)from: sysctl.c      8.1 (Berkeley) 6/6/93";
  41 #endif
  42 static const char rcsid[] =
  43   "$FreeBSD$";
  44 #endif /* not lint */
  45
  46 #include <sys/param.h>
  47 #include <sys/time.h>
  48 #include <sys/resource.h>
  49 #include <sys/stat.h>
  50 #include <sys/sysctl.h>
  51 #include <sys/vmmeter.h>
  52
  53 #ifdef __amd64__
  54 #include <sys/efi.h>
  55 #include <machine/metadata.h>
  56 #endif
  57
  58 #if defined(__amd64__) || defined(__i386__)
  59 #include <machine/pc/bios.h>
  60 #endif
  61
  62 #include <assert.h>
  63 #include <ctype.h>
  64 #include <err.h>
  65 #include <errno.h>
  66 #include <inttypes.h>
  67 #include <locale.h>
  68 #include <stdbool.h>
  69 #include <stdio.h>
  70 #include <stdlib.h>
  71 #include <string.h>
  72 #include <sysexits.h>
  73 #include <unistd.h>
  74
  75 static const char *conffile;
  76
  77 static int      aflag, bflag, Bflag, dflag, eflag, hflag, iflag;
  78 static int      Nflag, nflag, oflag, qflag, tflag, Tflag, Wflag, xflag;
  79
  80 static int      oidfmt(int *, int, char *, u_int *);
  81 static int      parsefile(const char *);
  82 static int      parse(const char *, int);
  83 static int      show_var(int *, int);
  84 static int      sysctl_all(int *oid, int len);
  85 static int      name2oid(const char *, int *);
  86
  87 static int      strIKtoi(const char *, char **, const char *);
  88
  89 static int ctl_sign[CTLTYPE+1] = {
  90         [CTLTYPE_INT] = 1,
  91         [CTLTYPE_LONG] = 1,
  92         [CTLTYPE_S8] = 1,
  93         [CTLTYPE_S16] = 1,
  94         [CTLTYPE_S32] = 1,
  95         [CTLTYPE_S64] = 1,
  96 };
  97
  98 static int ctl_size[CTLTYPE+1] = {
  99         [CTLTYPE_INT] = sizeof(int),
 100         [CTLTYPE_UINT] = sizeof(u_int),
 101         [CTLTYPE_LONG] = sizeof(long),
 102         [CTLTYPE_ULONG] = sizeof(u_long),
 103         [CTLTYPE_S8] = sizeof(int8_t),
 104         [CTLTYPE_S16] = sizeof(int16_t),
 105         [CTLTYPE_S32] = sizeof(int32_t),
 106         [CTLTYPE_S64] = sizeof(int64_t),
 107         [CTLTYPE_U8] = sizeof(uint8_t),
 108         [CTLTYPE_U16] = sizeof(uint16_t),
 109         [CTLTYPE_U32] = sizeof(uint32_t),
 110         [CTLTYPE_U64] = sizeof(uint64_t),
 111 };
 112
 113 static const char *ctl_typename[CTLTYPE+1] = {
 114         [CTLTYPE_INT] = "integer",
 115         [CTLTYPE_UINT] = "unsigned integer",
 116         [CTLTYPE_LONG] = "long integer",
 117         [CTLTYPE_ULONG] = "unsigned long",
 118         [CTLTYPE_U8] = "uint8_t",
 119         [CTLTYPE_U16] = "uint16_t",
 120         [CTLTYPE_U32] = "uint32_t",
 121         [CTLTYPE_U64] = "uint64_t",
 122         [CTLTYPE_S8] = "int8_t",
 123         [CTLTYPE_S16] = "int16_t",
 124         [CTLTYPE_S32] = "int32_t",
 125         [CTLTYPE_S64] = "int64_t",
 126         [CTLTYPE_NODE] = "node",
 127         [CTLTYPE_STRING] = "string",
 128         [CTLTYPE_OPAQUE] = "opaque",
 129 };
 130
 131 static void
 132 usage(void)
 133 {
 134
 135         (void)fprintf(stderr, "%s\n%s\n",
 136             "usage: sysctl [-bdehiNnoqTtWx] [ -B <bufsize> ] [-f filename] name[=value] ...",
 137             "       sysctl [-bdehNnoqTtWx] [ -B <bufsize> ] -a");
 138         exit(1);
 139 }
 140
 141 int
 142 main(int argc, char **argv)
 143 {
 144         int ch;
 145         int warncount = 0;
 146
 147         setlocale(LC_NUMERIC, "");
 148         setbuf(stdout,0);
 149         setbuf(stderr,0);
 150
 151         while ((ch = getopt(argc, argv, "AabB:def:hiNnoqtTwWxX")) != -1) {
 152                 switch (ch) {
 153                 case 'A':
 154                         /* compatibility */
 155                         aflag = oflag = 1;
 156                         break;
 157                 case 'a':
 158                         aflag = 1;
 159                         break;
 160                 case 'b':
 161                         bflag = 1;
 162                         break;
 163                 case 'B':
 164                         Bflag = strtol(optarg, NULL, 0);
 165                         break;
 166                 case 'd':
 167                         dflag = 1;
 168                         break;
 169                 case 'e':
 170                         eflag = 1;
 171                         break;
 172                 case 'f':
 173                         conffile = optarg;
 174                         break;
 175                 case 'h':
 176                         hflag = 1;
 177                         break;
 178                 case 'i':
 179                         iflag = 1;
 180                         break;
 181                 case 'N':
 182                         Nflag = 1;
 183                         break;
 184                 case 'n':
 185                         nflag = 1;
 186                         break;
 187                 case 'o':
 188                         oflag = 1;
 189                         break;
 190                 case 'q':
 191                         qflag = 1;
 192                         break;
 193                 case 't':
 194                         tflag = 1;
 195                         break;
 196                 case 'T':
 197                         Tflag = 1;
 198                         break;
 199                 case 'w':
 200                         /* compatibility */
 201                         /* ignored */
 202                         break;
 203                 case 'W':
 204                         Wflag = 1;
 205                         break;
 206                 case 'X':
 207                         /* compatibility */
 208                         aflag = xflag = 1;
 209                         break;
 210                 case 'x':
 211                         xflag = 1;
 212                         break;
 213                 default:
 214                         usage();
 215                 }
 216         }
 217         argc -= optind;
 218         argv += optind;
 219
 220         if (Nflag && nflag)
 221                 usage();
 222         if (aflag && argc == 0)
 223                 exit(sysctl_all(0, 0));
 224         if (argc == 0 && conffile == NULL)
 225                 usage();
 226
 227         warncount = 0;
 228         if (conffile != NULL)
 229                 warncount += parsefile(conffile);
 230
 231         while (argc-- > 0)
 232                 warncount += parse(*argv++, 0);
 233
 234         return (warncount);
 235 }
 236
 237 /*
 238  * Parse a single numeric value, append it to 'newbuf', and update
 239  * 'newsize'.  Returns true if the value was parsed and false if the
 240  * value was invalid.  Non-numeric types (strings) are handled
 241  * directly in parse().
 242  */
 243 static bool
 244 parse_numeric(const char *newvalstr, const char *fmt, u_int kind,
 245     void **newbufp, size_t *newsizep)
 246 {
 247         void *newbuf;
 248         const void *newval;
 249         int8_t i8val;
 250         uint8_t u8val;
 251         int16_t i16val;
 252         uint16_t u16val;
 253         int32_t i32val;
 254         uint32_t u32val;
 255         int intval;
 256         unsigned int uintval;
 257         long longval;
 258         unsigned long ulongval;
 259         int64_t i64val;
 260         uint64_t u64val;
 261         size_t valsize;
 262         char *endptr = NULL;
 263
 264         errno = 0;
 265
 266         switch (kind & CTLTYPE) {
 267         case CTLTYPE_INT:
 268                 if (strncmp(fmt, "IK", 2) == 0)
 269                         intval = strIKtoi(newvalstr, &endptr, fmt);
 270                 else
 271                         intval = (int)strtol(newvalstr, &endptr, 0);
 272                 newval = &intval;
 273                 valsize = sizeof(intval);
 274                 break;
 275         case CTLTYPE_UINT:
 276                 uintval = (int) strtoul(newvalstr, &endptr, 0);
 277                 newval = &uintval;
 278                 valsize = sizeof(uintval);
 279                 break;
 280         case CTLTYPE_LONG:
 281                 longval = strtol(newvalstr, &endptr, 0);
 282                 newval = &longval;
 283                 valsize = sizeof(longval);
 284                 break;
 285         case CTLTYPE_ULONG:
 286                 ulongval = strtoul(newvalstr, &endptr, 0);
 287                 newval = &ulongval;
 288                 valsize = sizeof(ulongval);
 289                 break;
 290         case CTLTYPE_S8:
 291                 i8val = (int8_t)strtol(newvalstr, &endptr, 0);
 292                 newval = &i8val;
 293                 valsize = sizeof(i8val);
 294                 break;
 295         case CTLTYPE_S16:
 296                 i16val = (int16_t)strtol(newvalstr, &endptr, 0);
 297                 newval = &i16val;
 298                 valsize = sizeof(i16val);
 299                 break;
 300         case CTLTYPE_S32:
 301                 i32val = (int32_t)strtol(newvalstr, &endptr, 0);
 302                 newval = &i32val;
 303                 valsize = sizeof(i32val);
 304                 break;
 305         case CTLTYPE_S64:
 306                 i64val = strtoimax(newvalstr, &endptr, 0);
 307                 newval = &i64val;
 308                 valsize = sizeof(i64val);
 309                 break;
 310         case CTLTYPE_U8:
 311                 u8val = (uint8_t)strtoul(newvalstr, &endptr, 0);
 312                 newval = &u8val;
 313                 valsize = sizeof(u8val);
 314                 break;
 315         case CTLTYPE_U16:
 316                 u16val = (uint16_t)strtoul(newvalstr, &endptr, 0);
 317                 newval = &u16val;
 318                 valsize = sizeof(u16val);
 319                 break;
 320         case CTLTYPE_U32:
 321                 u32val = (uint32_t)strtoul(newvalstr, &endptr, 0);
 322                 newval = &u32val;
 323                 valsize = sizeof(u32val);
 324                 break;
 325         case CTLTYPE_U64:
 326                 u64val = strtoumax(newvalstr, &endptr, 0);
 327                 newval = &u64val;
 328                 valsize = sizeof(u64val);
 329                 break;
 330         default:
 331                 /* NOTREACHED */
 332                 abort();
 333         }
 334
 335         if (errno != 0 || endptr == newvalstr ||
 336             (endptr != NULL && *endptr != '\0'))
 337                 return (false);
 338
 339         newbuf = realloc(*newbufp, *newsizep + valsize);
 340         if (newbuf == NULL)
 341                 err(1, "out of memory");
 342         memcpy((char *)newbuf + *newsizep, newval, valsize);
 343         *newbufp = newbuf;
 344         *newsizep += valsize;
 345
 346         return (true);
 347 }
 348
 349 /*
 350  * Parse a name into a MIB entry.
 351  * Lookup and print out the MIB entry if it exists.
 352  * Set a new value if requested.
 353  */
 354 static int
 355 parse(const char *string, int lineno)
 356 {
 357         int len, i, j;
 358         const void *newval;
 359         char *newvalstr = NULL;
 360         void *newbuf;
 361         size_t newsize = Bflag;
 362         int mib[CTL_MAXNAME];
 363         char *cp, *bufp, buf[BUFSIZ], fmt[BUFSIZ], line[BUFSIZ];
 364         u_int kind;
 365
 366         if (lineno)
 367                 snprintf(line, sizeof(line), " at line %d", lineno);
 368         else
 369                 line[0] = '\0';
 370
 371         cp = buf;
 372         if (snprintf(buf, BUFSIZ, "%s", string) >= BUFSIZ) {
 373                 warnx("oid too long: '%s'%s", string, line);
 374                 return (1);
 375         }
 376         bufp = strsep(&cp, "=:");
 377         if (cp != NULL) {
 378                 /* Tflag just lists tunables, do not allow assignment */
 379                 if (Tflag || Wflag) {
 380                         warnx("Can't set variables when using -T or -W");
 381                         usage();
 382                 }
 383                 while (isspace(*cp))
 384                         cp++;
 385                 /* Strip a pair of " or ' if any. */
 386                 switch (*cp) {
 387                 case '\"':
 388                 case '\'':
 389                         if (cp[strlen(cp) - 1] == *cp)
 390                                 cp[strlen(cp) - 1] = '\0';
 391                         cp++;
 392                 }
 393                 newvalstr = cp;
 394                 newsize = strlen(cp);
 395         }
 396         /* Trim spaces */
 397         cp = bufp + strlen(bufp) - 1;
 398         while (cp >= bufp && isspace((int)*cp)) {
 399                 *cp = '\0';
 400                 cp--;
 401         }
 402         len = name2oid(bufp, mib);
 403
 404         if (len < 0) {
 405                 if (iflag)
 406                         return (0);
 407                 if (qflag)
 408                         return (1);
 409                 else {
 410                         if (errno == ENOENT) {
 411                                 warnx("unknown oid '%s'%s", bufp, line);
 412                         } else {
 413                                 warn("unknown oid '%s'%s", bufp, line);
 414                         }
 415                         return (1);
 416                 }
 417         }
 418
 419         if (oidfmt(mib, len, fmt, &kind)) {
 420                 warn("couldn't find format of oid '%s'%s", bufp, line);
 421                 if (iflag)
 422                         return (1);
 423                 else
 424                         exit(1);
 425         }
 426
 427         if (newvalstr == NULL || dflag) {
 428                 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
 429                         if (dflag) {
 430                                 i = show_var(mib, len);
 431                                 if (!i && !bflag)
 432                                         putchar('\n');
 433                         }
 434                         sysctl_all(mib, len);
 435                 } else {
 436                         i = show_var(mib, len);
 437                         if (!i && !bflag)
 438                                 putchar('\n');
 439                 }
 440         } else {
 441                 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
 442                         warnx("oid '%s' isn't a leaf node%s", bufp, line);
 443                         return (1);
 444                 }
 445
 446                 if (!(kind & CTLFLAG_WR)) {
 447                         if (kind & CTLFLAG_TUN) {
 448                                 warnx("oid '%s' is a read only tunable%s", bufp, line);
 449                                 warnx("Tunable values are set in /boot/loader.conf");
 450                         } else
 451                                 warnx("oid '%s' is read only%s", bufp, line);
 452                         return (1);
 453                 }
 454
 455                 switch (kind & CTLTYPE) {
 456                 case CTLTYPE_INT:
 457                 case CTLTYPE_UINT:
 458                 case CTLTYPE_LONG:
 459                 case CTLTYPE_ULONG:
 460                 case CTLTYPE_S8:
 461                 case CTLTYPE_S16:
 462                 case CTLTYPE_S32:
 463                 case CTLTYPE_S64:
 464                 case CTLTYPE_U8:
 465                 case CTLTYPE_U16:
 466                 case CTLTYPE_U32:
 467                 case CTLTYPE_U64:
 468                         if (strlen(newvalstr) == 0) {
 469                                 warnx("empty numeric value");
 470                                 return (1);
 471                         }
 472                         /* FALLTHROUGH */
 473                 case CTLTYPE_STRING:
 474                         break;
 475                 default:
 476                         warnx("oid '%s' is type %d,"
 477                                 " cannot set that%s", bufp,
 478                                 kind & CTLTYPE, line);
 479                         return (1);
 480                 }
 481
 482                 newbuf = NULL;
 483
 484                 switch (kind & CTLTYPE) {
 485                 case CTLTYPE_STRING:
 486                         newval = newvalstr;
 487                         break;
 488                 default:
 489                         newsize = 0;
 490                         while ((cp = strsep(&newvalstr, " ,")) != NULL) {
 491                                 if (*cp == '\0')
 492                                         continue;
 493                                 if (!parse_numeric(cp, fmt, kind, &newbuf,
 494                                     &newsize)) {
 495                                         warnx("invalid %s '%s'%s",
 496                                             ctl_typename[kind & CTLTYPE],
 497                                             cp, line);
 498                                         free(newbuf);
 499                                         return (1);
 500                                 }
 501                         }
 502                         newval = newbuf;
 503                         break;
 504                 }
 505
 506                 i = show_var(mib, len);
 507                 if (sysctl(mib, len, 0, 0, newval, newsize) == -1) {
 508                         free(newbuf);
 509                         if (!i && !bflag)
 510                                 putchar('\n');
 511                         switch (errno) {
 512                         case EOPNOTSUPP:
 513                                 warnx("%s: value is not available%s",
 514                                         string, line);
 515                                 return (1);
 516                         case ENOTDIR:
 517                                 warnx("%s: specification is incomplete%s",
 518                                         string, line);
 519                                 return (1);
 520                         case ENOMEM:
 521                                 warnx("%s: type is unknown to this program%s",
 522                                         string, line);
 523                                 return (1);
 524                         default:
 525                                 warn("%s%s", string, line);
 526                                 return (1);
 527                         }
 528                 }
 529                 free(newbuf);
 530                 if (!bflag)
 531                         printf(" -> ");
 532                 i = nflag;
 533                 nflag = 1;
 534                 j = show_var(mib, len);
 535                 if (!j && !bflag)
 536                         putchar('\n');
 537                 nflag = i;
 538         }
 539
 540         return (0);
 541 }
 542
 543 static int
 544 parsefile(const char *filename)
 545 {
 546         FILE *file;
 547         char line[BUFSIZ], *p, *pq, *pdq;
 548         int warncount = 0, lineno = 0;
 549
 550         file = fopen(filename, "r");
 551         if (file == NULL)
 552                 err(EX_NOINPUT, "%s", filename);
 553         while (fgets(line, sizeof(line), file) != NULL) {
 554                 lineno++;
 555                 p = line;
 556                 pq = strchr(line, '\'');
 557                 pdq = strchr(line, '\"');
 558                 /* Replace the first # with \0. */
 559                 while((p = strchr(p, '#')) != NULL) {
 560                         if (pq != NULL && p > pq) {
 561                                 if ((p = strchr(pq+1, '\'')) != NULL)
 562                                         *(++p) = '\0';
 563                                 break;
 564                         } else if (pdq != NULL && p > pdq) {
 565                                 if ((p = strchr(pdq+1, '\"')) != NULL)
 566                                         *(++p) = '\0';
 567                                 break;
 568                         } else if (p == line || *(p-1) != '\\') {
 569                                 *p = '\0';
 570                                 break;
 571                         }
 572                         p++;
 573                 }
 574                 /* Trim spaces */
 575                 p = line + strlen(line) - 1;
 576                 while (p >= line && isspace((int)*p)) {
 577                         *p = '\0';
 578                         p--;
 579                 }
 580                 p = line;
 581                 while (isspace((int)*p))
 582                         p++;
 583                 if (*p == '\0')
 584                         continue;
 585                 else
 586                         warncount += parse(p, lineno);
 587         }
 588         fclose(file);
 589
 590         return (warncount);
 591 }
 592
 593 /* These functions will dump out various interesting structures. */
 594
 595 static int
 596 S_clockinfo(size_t l2, void *p)
 597 {
 598         struct clockinfo *ci = (struct clockinfo*)p;
 599
 600         if (l2 != sizeof(*ci)) {
 601                 warnx("S_clockinfo %zu != %zu", l2, sizeof(*ci));
 602                 return (1);
 603         }
 604         printf(hflag ? "{ hz = %'d, tick = %'d, profhz = %'d, stathz = %'d }" :
 605                 "{ hz = %d, tick = %d, profhz = %d, stathz = %d }",
 606                 ci->hz, ci->tick, ci->profhz, ci->stathz);
 607         return (0);
 608 }
 609
 610 static int
 611 S_loadavg(size_t l2, void *p)
 612 {
 613         struct loadavg *tv = (struct loadavg*)p;
 614
 615         if (l2 != sizeof(*tv)) {
 616                 warnx("S_loadavg %zu != %zu", l2, sizeof(*tv));
 617                 return (1);
 618         }
 619         printf(hflag ? "{ %'.2f %'.2f %'.2f }" : "{ %.2f %.2f %.2f }",
 620                 (double)tv->ldavg[0]/(double)tv->fscale,
 621                 (double)tv->ldavg[1]/(double)tv->fscale,
 622                 (double)tv->ldavg[2]/(double)tv->fscale);
 623         return (0);
 624 }
 625
 626 static int
 627 S_timeval(size_t l2, void *p)
 628 {
 629         struct timeval *tv = (struct timeval*)p;
 630         time_t tv_sec;
 631         char *p1, *p2;
 632
 633         if (l2 != sizeof(*tv)) {
 634                 warnx("S_timeval %zu != %zu", l2, sizeof(*tv));
 635                 return (1);
 636         }
 637         printf(hflag ? "{ sec = %'jd, usec = %'ld } " :
 638                 "{ sec = %jd, usec = %ld } ",
 639                 (intmax_t)tv->tv_sec, tv->tv_usec);
 640         tv_sec = tv->tv_sec;
 641         p1 = strdup(ctime(&tv_sec));
 642         for (p2=p1; *p2 ; p2++)
 643                 if (*p2 == '\n')
 644                         *p2 = '\0';
 645         fputs(p1, stdout);
 646         free(p1);
 647         return (0);
 648 }
 649
 650 static int
 651 S_vmtotal(size_t l2, void *p)
 652 {
 653         struct vmtotal *v;
 654         int pageKilo;
 655
 656         if (l2 != sizeof(*v)) {
 657                 warnx("S_vmtotal %zu != %zu", l2, sizeof(*v));
 658                 return (1);
 659         }
 660
 661         v = p;
 662         pageKilo = getpagesize() / 1024;
 663
 664 #define pg2k(a) ((uintmax_t)(a) * pageKilo)
 665         printf("\nSystem wide totals computed every five seconds:"
 666             " (values in kilobytes)\n");
 667         printf("===============================================\n");
 668         printf("Processes:\t\t(RUNQ: %d Disk Wait: %d Page Wait: "
 669             "%d Sleep: %d)\n",
 670             v->t_rq, v->t_dw, v->t_pw, v->t_sl);
 671         printf("Virtual Memory:\t\t(Total: %juK Active: %juK)\n",
 672             pg2k(v->t_vm), pg2k(v->t_avm));
 673         printf("Real Memory:\t\t(Total: %juK Active: %juK)\n",
 674             pg2k(v->t_rm), pg2k(v->t_arm));
 675         printf("Shared Virtual Memory:\t(Total: %juK Active: %juK)\n",
 676             pg2k(v->t_vmshr), pg2k(v->t_avmshr));
 677         printf("Shared Real Memory:\t(Total: %juK Active: %juK)\n",
 678             pg2k(v->t_rmshr), pg2k(v->t_armshr));
 679         printf("Free Memory:\t%juK", pg2k(v->t_free));
 680         return (0);
 681 }
 682
 683 #ifdef __amd64__
 684 static int
 685 S_efi_map(size_t l2, void *p)
 686 {
 687         struct efi_map_header *efihdr;
 688         struct efi_md *map;
 689         const char *type;
 690         size_t efisz;
 691         int ndesc, i;
 692
 693         static const char *types[] = {
 694                 "Reserved",
 695                 "LoaderCode",
 696                 "LoaderData",
 697                 "BootServicesCode",
 698                 "BootServicesData",
 699                 "RuntimeServicesCode",
 700                 "RuntimeServicesData",
 701                 "ConventionalMemory",
 702                 "UnusableMemory",
 703                 "ACPIReclaimMemory",
 704                 "ACPIMemoryNVS",
 705                 "MemoryMappedIO",
 706                 "MemoryMappedIOPortSpace",
 707                 "PalCode"
 708         };
 709
 710         /*
 711          * Memory map data provided by UEFI via the GetMemoryMap
 712          * Boot Services API.
 713          */
 714         if (l2 < sizeof(*efihdr)) {
 715                 warnx("S_efi_map length less than header");
 716                 return (1);
 717         }
 718         efihdr = p;
 719         efisz = (sizeof(struct efi_map_header) + 0xf) & ~0xf;
 720         map = (struct efi_md *)((uint8_t *)efihdr + efisz);
 721
 722         if (efihdr->descriptor_size == 0)
 723                 return (0);
 724         if (l2 != efisz + efihdr->memory_size) {
 725                 warnx("S_efi_map length mismatch %zu vs %zu", l2, efisz +
 726                     efihdr->memory_size);
 727                 return (1);
 728         }
 729         ndesc = efihdr->memory_size / efihdr->descriptor_size;
 730
 731         printf("\n%23s %12s %12s %8s %4s",
 732             "Type", "Physical", "Virtual", "#Pages", "Attr");
 733
 734         for (i = 0; i < ndesc; i++,
 735             map = efi_next_descriptor(map, efihdr->descriptor_size)) {
 736                 if (map->md_type <= EFI_MD_TYPE_PALCODE)
 737                         type = types[map->md_type];
 738                 else
 739                         type = "<INVALID>";
 740                 printf("\n%23s %012jx %12p %08jx ", type,
 741                     (uintmax_t)map->md_phys, map->md_virt,
 742                     (uintmax_t)map->md_pages);
 743                 if (map->md_attr & EFI_MD_ATTR_UC)
 744                         printf("UC ");
 745                 if (map->md_attr & EFI_MD_ATTR_WC)
 746                         printf("WC ");
 747                 if (map->md_attr & EFI_MD_ATTR_WT)
 748                         printf("WT ");
 749                 if (map->md_attr & EFI_MD_ATTR_WB)
 750                         printf("WB ");
 751                 if (map->md_attr & EFI_MD_ATTR_UCE)
 752                         printf("UCE ");
 753                 if (map->md_attr & EFI_MD_ATTR_WP)
 754                         printf("WP ");
 755                 if (map->md_attr & EFI_MD_ATTR_RP)
 756                         printf("RP ");
 757                 if (map->md_attr & EFI_MD_ATTR_XP)
 758                         printf("XP ");
 759                 if (map->md_attr & EFI_MD_ATTR_RT)
 760                         printf("RUNTIME");
 761         }
 762         return (0);
 763 }
 764 #endif
 765
 766 #if defined(__amd64__) || defined(__i386__)
 767 static int
 768 S_bios_smap_xattr(size_t l2, void *p)
 769 {
 770         struct bios_smap_xattr *smap, *end;
 771
 772         if (l2 % sizeof(*smap) != 0) {
 773                 warnx("S_bios_smap_xattr %zu is not a multiple of %zu", l2,
 774                     sizeof(*smap));
 775                 return (1);
 776         }
 777
 778         end = (struct bios_smap_xattr *)((char *)p + l2);
 779         for (smap = p; smap < end; smap++)
 780                 printf("\nSMAP type=%02x, xattr=%02x, base=%016jx, len=%016jx",
 781                     smap->type, smap->xattr, (uintmax_t)smap->base,
 782                     (uintmax_t)smap->length);
 783         return (0);
 784 }
 785 #endif
 786
 787 static int
 788 strIKtoi(const char *str, char **endptrp, const char *fmt)
 789 {
 790         int kelv;
 791         float temp;
 792         size_t len;
 793         const char *p;
 794         int prec, i;
 795
 796         assert(errno == 0);
 797
 798         len = strlen(str);
 799         /* caller already checked this */
 800         assert(len > 0);
 801
 802         /*
 803          * A format of "IK" is in deciKelvin. A format of "IK3" is in
 804          * milliKelvin. The single digit following IK is log10 of the
 805          * multiplying factor to convert Kelvin into the untis of this sysctl,
 806          * or the dividing factor to convert the sysctl value to Kelvin. Numbers
 807          * larger than 6 will run into precision issues with 32-bit integers.
 808          * Characters that aren't ASCII digits after the 'K' are ignored. No
 809          * localization is present because this is an interface from the kernel
 810          * to this program (eg not an end-user interface), so isdigit() isn't
 811          * used here.
 812          */
 813         if (fmt[2] != '\0' && fmt[2] >= '0' && fmt[2] <= '9')
 814                 prec = fmt[2] - '0';
 815         else
 816                 prec = 1;
 817         p = &str[len - 1];
 818         if (*p == 'C' || *p == 'F' || *p == 'K') {
 819                 temp = strtof(str, endptrp);
 820                 if (*endptrp != str && *endptrp == p && errno == 0) {
 821                         if (*p == 'F')
 822                                 temp = (temp - 32) * 5 / 9;
 823                         *endptrp = NULL;
 824                         if (*p != 'K')
 825                                 temp += 273.15;
 826                         for (i = 0; i < prec; i++)
 827                                 temp *= 10.0;
 828                         return ((int)(temp + 0.5));
 829                 }
 830         } else {
 831                 /* No unit specified -> treat it as a raw number */
 832                 kelv = (int)strtol(str, endptrp, 10);
 833                 if (*endptrp != str && *endptrp == p && errno == 0) {
 834                         *endptrp = NULL;
 835                         return (kelv);
 836                 }
 837         }
 838
 839         errno = ERANGE;
 840         return (0);
 841 }
 842
 843 /*
 844  * These functions uses a presently undocumented interface to the kernel
 845  * to walk the tree and get the type so it can print the value.
 846  * This interface is under work and consideration, and should probably
 847  * be killed with a big axe by the first person who can find the time.
 848  * (be aware though, that the proper interface isn't as obvious as it
 849  * may seem, there are various conflicting requirements.
 850  */
 851
 852 static int
 853 name2oid(const char *name, int *oidp)
 854 {
 855         int oid[2];
 856         int i;
 857         size_t j;
 858
 859         oid[0] = 0;
 860         oid[1] = 3;
 861
 862         j = CTL_MAXNAME * sizeof(int);
 863         i = sysctl(oid, 2, oidp, &j, name, strlen(name));
 864         if (i < 0)
 865                 return (i);
 866         j /= sizeof(int);
 867         return (j);
 868 }
 869
 870 static int
 871 oidfmt(int *oid, int len, char *fmt, u_int *kind)
 872 {
 873         int qoid[CTL_MAXNAME+2];
 874         u_char buf[BUFSIZ];
 875         int i;
 876         size_t j;
 877
 878         qoid[0] = 0;
 879         qoid[1] = 4;
 880         memcpy(qoid + 2, oid, len * sizeof(int));
 881
 882         j = sizeof(buf);
 883         i = sysctl(qoid, len + 2, buf, &j, 0, 0);
 884         if (i)
 885                 err(1, "sysctl fmt %d %zu %d", i, j, errno);
 886
 887         if (kind)
 888                 *kind = *(u_int *)buf;
 889
 890         if (fmt)
 891                 strcpy(fmt, (char *)(buf + sizeof(u_int)));
 892         return (0);
 893 }
 894
 895 /*
 896  * This formats and outputs the value of one variable
 897  *
 898  * Returns zero if anything was actually output.
 899  * Returns one if didn't know what to do with this.
 900  * Return minus one if we had errors.
 901  */
 902 static int
 903 show_var(int *oid, int nlen)
 904 {
 905         u_char buf[BUFSIZ], *val, *oval, *p;
 906         char name[BUFSIZ], fmt[BUFSIZ];
 907         const char *sep, *sep1, *prntype;
 908         int qoid[CTL_MAXNAME+2];
 909         uintmax_t umv;
 910         intmax_t mv;
 911         int i, hexlen, sign, ctltype;
 912         size_t intlen;
 913         size_t j, len;
 914         u_int kind;
 915         float base;
 916         int (*func)(size_t, void *);
 917         int prec;
 918
 919         /* Silence GCC. */
 920         umv = mv = intlen = 0;
 921
 922         bzero(buf, BUFSIZ);
 923         bzero(fmt, BUFSIZ);
 924         bzero(name, BUFSIZ);
 925         qoid[0] = 0;
 926         memcpy(qoid + 2, oid, nlen * sizeof(int));
 927
 928         qoid[1] = 1;
 929         j = sizeof(name);
 930         i = sysctl(qoid, nlen + 2, name, &j, 0, 0);
 931         if (i || !j)
 932                 err(1, "sysctl name %d %zu %d", i, j, errno);
 933
 934         oidfmt(oid, nlen, fmt, &kind);
 935         /* if Wflag then only list sysctls that are writeable and not stats. */
 936         if (Wflag && ((kind & CTLFLAG_WR) == 0 || (kind & CTLFLAG_STATS) != 0))
 937                 return 1;
 938
 939         /* if Tflag then only list sysctls that are tuneables. */
 940         if (Tflag && (kind & CTLFLAG_TUN) == 0)
 941                 return 1;
 942
 943         if (Nflag) {
 944                 printf("%s", name);
 945                 return (0);
 946         }
 947
 948         if (eflag)
 949                 sep = "=";
 950         else
 951                 sep = ": ";
 952
 953         ctltype = (kind & CTLTYPE);
 954         if (tflag || dflag) {
 955                 if (!nflag)
 956                         printf("%s%s", name, sep);
 957                 if (ctl_typename[ctltype] != NULL)
 958                         prntype = ctl_typename[ctltype];
 959                 else
 960                         prntype = "unknown";
 961                 if (tflag && dflag)
 962                         printf("%s%s", prntype, sep);
 963                 else if (tflag) {
 964                         printf("%s", prntype);
 965                         return (0);
 966                 }
 967                 qoid[1] = 5;
 968                 j = sizeof(buf);
 969                 i = sysctl(qoid, nlen + 2, buf, &j, 0, 0);
 970                 printf("%s", buf);
 971                 return (0);
 972         }
 973
 974         /* don't fetch opaques that we don't know how to print */
 975         if (ctltype == CTLTYPE_OPAQUE) {
 976                 if (strcmp(fmt, "S,clockinfo") == 0)
 977                         func = S_clockinfo;
 978                 else if (strcmp(fmt, "S,timeval") == 0)
 979                         func = S_timeval;
 980                 else if (strcmp(fmt, "S,loadavg") == 0)
 981                         func = S_loadavg;
 982                 else if (strcmp(fmt, "S,vmtotal") == 0)
 983                         func = S_vmtotal;
 984 #ifdef __amd64__
 985                 else if (strcmp(fmt, "S,efi_map_header") == 0)
 986                         func = S_efi_map;
 987 #endif
 988 #if defined(__amd64__) || defined(__i386__)
 989                 else if (strcmp(fmt, "S,bios_smap_xattr") == 0)
 990                         func = S_bios_smap_xattr;
 991 #endif
 992                 else {
 993                         func = NULL;
 994                         if (!bflag && !oflag && !xflag)
 995                                 return (1);
 996                 }
 997         }
 998
 999         /* find an estimate of how much we need for this var */
1000         if (Bflag)
1001                 j = Bflag;
1002         else {
1003                 j = 0;
1004                 i = sysctl(oid, nlen, 0, &j, 0, 0);
1005                 j += j; /* we want to be sure :-) */
1006         }
1007
1008         val = oval = malloc(j + 1);
1009         if (val == NULL) {
1010                 warnx("malloc failed");
1011                 return (1);
1012         }
1013         len = j;
1014         i = sysctl(oid, nlen, val, &len, 0, 0);
1015         if (i != 0 || (len == 0 && ctltype != CTLTYPE_STRING)) {
1016                 free(oval);
1017                 return (1);
1018         }
1019
1020         if (bflag) {
1021                 fwrite(val, 1, len, stdout);
1022                 free(oval);
1023                 return (0);
1024         }
1025         val[len] = '\0';
1026         p = val;
1027         sign = ctl_sign[ctltype];
1028         intlen = ctl_size[ctltype];
1029
1030         switch (ctltype) {
1031         case CTLTYPE_STRING:
1032                 if (!nflag)
1033                         printf("%s%s", name, sep);
1034                 printf("%.*s", (int)len, p);
1035                 free(oval);
1036                 return (0);
1037
1038         case CTLTYPE_INT:
1039         case CTLTYPE_UINT:
1040         case CTLTYPE_LONG:
1041         case CTLTYPE_ULONG:
1042         case CTLTYPE_S8:
1043         case CTLTYPE_S16:
1044         case CTLTYPE_S32:
1045         case CTLTYPE_S64:
1046         case CTLTYPE_U8:
1047         case CTLTYPE_U16:
1048         case CTLTYPE_U32:
1049         case CTLTYPE_U64:
1050                 if (!nflag)
1051                         printf("%s%s", name, sep);
1052                 hexlen = 2 + (intlen * CHAR_BIT + 3) / 4;
1053                 sep1 = "";
1054                 while (len >= intlen) {
1055                         switch (kind & CTLTYPE) {
1056                         case CTLTYPE_INT:
1057                         case CTLTYPE_UINT:
1058                                 umv = *(u_int *)p;
1059                                 mv = *(int *)p;
1060                                 break;
1061                         case CTLTYPE_LONG:
1062                         case CTLTYPE_ULONG:
1063                                 umv = *(u_long *)p;
1064                                 mv = *(long *)p;
1065                                 break;
1066                         case CTLTYPE_S8:
1067                         case CTLTYPE_U8:
1068                                 umv = *(uint8_t *)p;
1069                                 mv = *(int8_t *)p;
1070                                 break;
1071                         case CTLTYPE_S16:
1072                         case CTLTYPE_U16:
1073                                 umv = *(uint16_t *)p;
1074                                 mv = *(int16_t *)p;
1075                                 break;
1076                         case CTLTYPE_S32:
1077                         case CTLTYPE_U32:
1078                                 umv = *(uint32_t *)p;
1079                                 mv = *(int32_t *)p;
1080                                 break;
1081                         case CTLTYPE_S64:
1082                         case CTLTYPE_U64:
1083                                 umv = *(uint64_t *)p;
1084                                 mv = *(int64_t *)p;
1085                                 break;
1086                         }
1087                         fputs(sep1, stdout);
1088                         if (xflag)
1089                                 printf("%#0*jx", hexlen, umv);
1090                         else if (!sign)
1091                                 printf(hflag ? "%'ju" : "%ju", umv);
1092                         else if (fmt[1] == 'K') {
1093                                 if (mv < 0)
1094                                         printf("%jd", mv);
1095                                 else {
1096                                         /*
1097                                          * See strIKtoi for details on fmt.
1098                                          */
1099                                         prec = 1;
1100                                         if (fmt[2] != '\0')
1101                                                 prec = fmt[2] - '0';
1102                                         base = 1.0;
1103                                         for (int i = 0; i < prec; i++)
1104                                                 base *= 10.0;
1105                                         printf("%.*fC", prec,
1106                                             (float)mv / base - 273.15);
1107                                 }
1108                         } else
1109                                 printf(hflag ? "%'jd" : "%jd", mv);
1110                         sep1 = " ";
1111                         len -= intlen;
1112                         p += intlen;
1113                 }
1114                 free(oval);
1115                 return (0);
1116
1117         case CTLTYPE_OPAQUE:
1118                 i = 0;
1119                 if (func) {
1120                         if (!nflag)
1121                                 printf("%s%s", name, sep);
1122                         i = (*func)(len, p);
1123                         free(oval);
1124                         return (i);
1125                 }
1126                 /* FALLTHROUGH */
1127         default:
1128                 if (!oflag && !xflag) {
1129                         free(oval);
1130                         return (1);
1131                 }
1132                 if (!nflag)
1133                         printf("%s%s", name, sep);
1134                 printf("Format:%s Length:%zu Dump:0x", fmt, len);
1135                 while (len-- && (xflag || p < val + 16))
1136                         printf("%02x", *p++);
1137                 if (!xflag && len > 16)
1138                         printf("...");
1139                 free(oval);
1140                 return (0);
1141         }
1142         free(oval);
1143         return (1);
1144 }
1145
1146 static int
1147 sysctl_all(int *oid, int len)
1148 {
1149         int name1[22], name2[22];
1150         int i, j;
1151         size_t l1, l2;
1152
1153         name1[0] = 0;
1154         name1[1] = 2;
1155         l1 = 2;
1156         if (len) {
1157                 memcpy(name1+2, oid, len * sizeof(int));
1158                 l1 += len;
1159         } else {
1160                 name1[2] = 1;
1161                 l1++;
1162         }
1163         for (;;) {
1164                 l2 = sizeof(name2);
1165                 j = sysctl(name1, l1, name2, &l2, 0, 0);
1166                 if (j < 0) {
1167                         if (errno == ENOENT)
1168                                 return (0);
1169                         else
1170                                 err(1, "sysctl(getnext) %d %zu", j, l2);
1171                 }
1172
1173                 l2 /= sizeof(int);
1174
1175                 if (len < 0 || l2 < (unsigned int)len)
1176                         return (0);
1177
1178                 for (i = 0; i < len; i++)
1179                         if (name2[i] != oid[i])
1180                                 return (0);
1181
1182                 i = show_var(name2, l2);
1183                 if (!i && !bflag)
1184                         putchar('\n');
1185
1186                 memcpy(name1+2, name2, l2 * sizeof(int));
1187                 l1 = 2 + l2;
1188         }
1189 }