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 <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 name into a MIB entry.
 238  * Lookup and print out the MIB entry if it exists.
 239  * Set a new value if requested.
 240  */
 241 static int
 242 parse(const char *string, int lineno)
 243 {
 244         int len, i, j;
 245         const void *newval;
 246         const char *newvalstr = NULL;
 247         int8_t i8val;
 248         uint8_t u8val;
 249         int16_t i16val;
 250         uint16_t u16val;
 251         int32_t i32val;
 252         uint32_t u32val;
 253         int intval;
 254         unsigned int uintval;
 255         long longval;
 256         unsigned long ulongval;
 257         size_t newsize = Bflag;
 258         int64_t i64val;
 259         uint64_t u64val;
 260         int mib[CTL_MAXNAME];
 261         char *cp, *bufp, buf[BUFSIZ], *endptr = NULL, fmt[BUFSIZ], line[BUFSIZ];
 262         u_int kind;
 263
 264         if (lineno)
 265                 snprintf(line, sizeof(line), " at line %d", lineno);
 266         else
 267                 line[0] = '\0';
 268
 269         cp = buf;
 270         if (snprintf(buf, BUFSIZ, "%s", string) >= BUFSIZ) {
 271                 warnx("oid too long: '%s'%s", string, line);
 272                 return (1);
 273         }
 274         bufp = strsep(&cp, "=:");
 275         if (cp != NULL) {
 276                 /* Tflag just lists tunables, do not allow assignment */
 277                 if (Tflag || Wflag) {
 278                         warnx("Can't set variables when using -T or -W");
 279                         usage();
 280                 }
 281                 while (isspace(*cp))
 282                         cp++;
 283                 /* Strip a pair of " or ' if any. */
 284                 switch (*cp) {
 285                 case '\"':
 286                 case '\'':
 287                         if (cp[strlen(cp) - 1] == *cp)
 288                                 cp[strlen(cp) - 1] = '\0';
 289                         cp++;
 290                 }
 291                 newvalstr = cp;
 292                 newsize = strlen(cp);
 293         }
 294         /* Trim spaces */
 295         cp = bufp + strlen(bufp) - 1;
 296         while (cp >= bufp && isspace((int)*cp)) {
 297                 *cp = '\0';
 298                 cp--;
 299         }
 300         len = name2oid(bufp, mib);
 301
 302         if (len < 0) {
 303                 if (iflag)
 304                         return (0);
 305                 if (qflag)
 306                         return (1);
 307                 else {
 308                         if (errno == ENOENT) {
 309                                 warnx("unknown oid '%s'%s", bufp, line);
 310                         } else {
 311                                 warn("unknown oid '%s'%s", bufp, line);
 312                         }
 313                         return (1);
 314                 }
 315         }
 316
 317         if (oidfmt(mib, len, fmt, &kind)) {
 318                 warn("couldn't find format of oid '%s'%s", bufp, line);
 319                 if (iflag)
 320                         return (1);
 321                 else
 322                         exit(1);
 323         }
 324
 325         if (newvalstr == NULL || dflag) {
 326                 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
 327                         if (dflag) {
 328                                 i = show_var(mib, len);
 329                                 if (!i && !bflag)
 330                                         putchar('\n');
 331                         }
 332                         sysctl_all(mib, len);
 333                 } else {
 334                         i = show_var(mib, len);
 335                         if (!i && !bflag)
 336                                 putchar('\n');
 337                 }
 338         } else {
 339                 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
 340                         warnx("oid '%s' isn't a leaf node%s", bufp, line);
 341                         return (1);
 342                 }
 343
 344                 if (!(kind & CTLFLAG_WR)) {
 345                         if (kind & CTLFLAG_TUN) {
 346                                 warnx("oid '%s' is a read only tunable%s", bufp, line);
 347                                 warnx("Tunable values are set in /boot/loader.conf");
 348                         } else
 349                                 warnx("oid '%s' is read only%s", bufp, line);
 350                         return (1);
 351                 }
 352
 353                 switch (kind & CTLTYPE) {
 354                 case CTLTYPE_INT:
 355                 case CTLTYPE_UINT:
 356                 case CTLTYPE_LONG:
 357                 case CTLTYPE_ULONG:
 358                 case CTLTYPE_S8:
 359                 case CTLTYPE_S16:
 360                 case CTLTYPE_S32:
 361                 case CTLTYPE_S64:
 362                 case CTLTYPE_U8:
 363                 case CTLTYPE_U16:
 364                 case CTLTYPE_U32:
 365                 case CTLTYPE_U64:
 366                         if (strlen(newvalstr) == 0) {
 367                                 warnx("empty numeric value");
 368                                 return (1);
 369                         }
 370                         /* FALLTHROUGH */
 371                 case CTLTYPE_STRING:
 372                         break;
 373                 default:
 374                         warnx("oid '%s' is type %d,"
 375                                 " cannot set that%s", bufp,
 376                                 kind & CTLTYPE, line);
 377                         return (1);
 378                 }
 379
 380                 errno = 0;
 381
 382                 switch (kind & CTLTYPE) {
 383                         case CTLTYPE_INT:
 384                                 if (strncmp(fmt, "IK", 2) == 0)
 385                                         intval = strIKtoi(newvalstr, &endptr, fmt);
 386                                 else
 387                                         intval = (int)strtol(newvalstr, &endptr,
 388                                             0);
 389                                 newval = &intval;
 390                                 newsize = sizeof(intval);
 391                                 break;
 392                         case CTLTYPE_UINT:
 393                                 uintval = (int) strtoul(newvalstr, &endptr, 0);
 394                                 newval = &uintval;
 395                                 newsize = sizeof(uintval);
 396                                 break;
 397                         case CTLTYPE_LONG:
 398                                 longval = strtol(newvalstr, &endptr, 0);
 399                                 newval = &longval;
 400                                 newsize = sizeof(longval);
 401                                 break;
 402                         case CTLTYPE_ULONG:
 403                                 ulongval = strtoul(newvalstr, &endptr, 0);
 404                                 newval = &ulongval;
 405                                 newsize = sizeof(ulongval);
 406                                 break;
 407                         case CTLTYPE_STRING:
 408                                 newval = newvalstr;
 409                                 break;
 410                         case CTLTYPE_S8:
 411                                 i8val = (int8_t)strtol(newvalstr, &endptr, 0);
 412                                 newval = &i8val;
 413                                 newsize = sizeof(i8val);
 414                                 break;
 415                         case CTLTYPE_S16:
 416                                 i16val = (int16_t)strtol(newvalstr, &endptr,
 417                                     0);
 418                                 newval = &i16val;
 419                                 newsize = sizeof(i16val);
 420                                 break;
 421                         case CTLTYPE_S32:
 422                                 i32val = (int32_t)strtol(newvalstr, &endptr,
 423                                     0);
 424                                 newval = &i32val;
 425                                 newsize = sizeof(i32val);
 426                                 break;
 427                         case CTLTYPE_S64:
 428                                 i64val = strtoimax(newvalstr, &endptr, 0);
 429                                 newval = &i64val;
 430                                 newsize = sizeof(i64val);
 431                                 break;
 432                         case CTLTYPE_U8:
 433                                 u8val = (uint8_t)strtoul(newvalstr, &endptr, 0);
 434                                 newval = &u8val;
 435                                 newsize = sizeof(u8val);
 436                                 break;
 437                         case CTLTYPE_U16:
 438                                 u16val = (uint16_t)strtoul(newvalstr, &endptr,
 439                                     0);
 440                                 newval = &u16val;
 441                                 newsize = sizeof(u16val);
 442                                 break;
 443                         case CTLTYPE_U32:
 444                                 u32val = (uint32_t)strtoul(newvalstr, &endptr,
 445                                     0);
 446                                 newval = &u32val;
 447                                 newsize = sizeof(u32val);
 448                                 break;
 449                         case CTLTYPE_U64:
 450                                 u64val = strtoumax(newvalstr, &endptr, 0);
 451                                 newval = &u64val;
 452                                 newsize = sizeof(u64val);
 453                                 break;
 454                         default:
 455                                 /* NOTREACHED */
 456                                 abort();
 457                 }
 458
 459                 if (errno != 0 || endptr == newvalstr ||
 460                     (endptr != NULL && *endptr != '\0')) {
 461                         warnx("invalid %s '%s'%s", ctl_typename[kind & CTLTYPE],
 462                             newvalstr, line);
 463                         return (1);
 464                 }
 465
 466                 i = show_var(mib, len);
 467                 if (sysctl(mib, len, 0, 0, newval, newsize) == -1) {
 468                         if (!i && !bflag)
 469                                 putchar('\n');
 470                         switch (errno) {
 471                         case EOPNOTSUPP:
 472                                 warnx("%s: value is not available%s",
 473                                         string, line);
 474                                 return (1);
 475                         case ENOTDIR:
 476                                 warnx("%s: specification is incomplete%s",
 477                                         string, line);
 478                                 return (1);
 479                         case ENOMEM:
 480                                 warnx("%s: type is unknown to this program%s",
 481                                         string, line);
 482                                 return (1);
 483                         default:
 484                                 warn("%s%s", string, line);
 485                                 return (1);
 486                         }
 487                 }
 488                 if (!bflag)
 489                         printf(" -> ");
 490                 i = nflag;
 491                 nflag = 1;
 492                 j = show_var(mib, len);
 493                 if (!j && !bflag)
 494                         putchar('\n');
 495                 nflag = i;
 496         }
 497
 498         return (0);
 499 }
 500
 501 static int
 502 parsefile(const char *filename)
 503 {
 504         FILE *file;
 505         char line[BUFSIZ], *p, *pq, *pdq;
 506         int warncount = 0, lineno = 0;
 507
 508         file = fopen(filename, "r");
 509         if (file == NULL)
 510                 err(EX_NOINPUT, "%s", filename);
 511         while (fgets(line, sizeof(line), file) != NULL) {
 512                 lineno++;
 513                 p = line;
 514                 pq = strchr(line, '\'');
 515                 pdq = strchr(line, '\"');
 516                 /* Replace the first # with \0. */
 517                 while((p = strchr(p, '#')) != NULL) {
 518                         if (pq != NULL && p > pq) {
 519                                 if ((p = strchr(pq+1, '\'')) != NULL)
 520                                         *(++p) = '\0';
 521                                 break;
 522                         } else if (pdq != NULL && p > pdq) {
 523                                 if ((p = strchr(pdq+1, '\"')) != NULL)
 524                                         *(++p) = '\0';
 525                                 break;
 526                         } else if (p == line || *(p-1) != '\\') {
 527                                 *p = '\0';
 528                                 break;
 529                         }
 530                         p++;
 531                 }
 532                 /* Trim spaces */
 533                 p = line + strlen(line) - 1;
 534                 while (p >= line && isspace((int)*p)) {
 535                         *p = '\0';
 536                         p--;
 537                 }
 538                 p = line;
 539                 while (isspace((int)*p))
 540                         p++;
 541                 if (*p == '\0')
 542                         continue;
 543                 else
 544                         warncount += parse(p, lineno);
 545         }
 546         fclose(file);
 547
 548         return (warncount);
 549 }
 550
 551 /* These functions will dump out various interesting structures. */
 552
 553 static int
 554 S_clockinfo(size_t l2, void *p)
 555 {
 556         struct clockinfo *ci = (struct clockinfo*)p;
 557
 558         if (l2 != sizeof(*ci)) {
 559                 warnx("S_clockinfo %zu != %zu", l2, sizeof(*ci));
 560                 return (1);
 561         }
 562         printf(hflag ? "{ hz = %'d, tick = %'d, profhz = %'d, stathz = %'d }" :
 563                 "{ hz = %d, tick = %d, profhz = %d, stathz = %d }",
 564                 ci->hz, ci->tick, ci->profhz, ci->stathz);
 565         return (0);
 566 }
 567
 568 static int
 569 S_loadavg(size_t l2, void *p)
 570 {
 571         struct loadavg *tv = (struct loadavg*)p;
 572
 573         if (l2 != sizeof(*tv)) {
 574                 warnx("S_loadavg %zu != %zu", l2, sizeof(*tv));
 575                 return (1);
 576         }
 577         printf(hflag ? "{ %'.2f %'.2f %'.2f }" : "{ %.2f %.2f %.2f }",
 578                 (double)tv->ldavg[0]/(double)tv->fscale,
 579                 (double)tv->ldavg[1]/(double)tv->fscale,
 580                 (double)tv->ldavg[2]/(double)tv->fscale);
 581         return (0);
 582 }
 583
 584 static int
 585 S_timeval(size_t l2, void *p)
 586 {
 587         struct timeval *tv = (struct timeval*)p;
 588         time_t tv_sec;
 589         char *p1, *p2;
 590
 591         if (l2 != sizeof(*tv)) {
 592                 warnx("S_timeval %zu != %zu", l2, sizeof(*tv));
 593                 return (1);
 594         }
 595         printf(hflag ? "{ sec = %'jd, usec = %'ld } " :
 596                 "{ sec = %jd, usec = %ld } ",
 597                 (intmax_t)tv->tv_sec, tv->tv_usec);
 598         tv_sec = tv->tv_sec;
 599         p1 = strdup(ctime(&tv_sec));
 600         for (p2=p1; *p2 ; p2++)
 601                 if (*p2 == '\n')
 602                         *p2 = '\0';
 603         fputs(p1, stdout);
 604         free(p1);
 605         return (0);
 606 }
 607
 608 static int
 609 S_vmtotal(size_t l2, void *p)
 610 {
 611         struct vmtotal *v;
 612         int pageKilo;
 613
 614         if (l2 != sizeof(*v)) {
 615                 warnx("S_vmtotal %zu != %zu", l2, sizeof(*v));
 616                 return (1);
 617         }
 618
 619         v = p;
 620         pageKilo = getpagesize() / 1024;
 621
 622 #define pg2k(a) ((uintmax_t)(a) * pageKilo)
 623         printf("\nSystem wide totals computed every five seconds:"
 624             " (values in kilobytes)\n");
 625         printf("===============================================\n");
 626         printf("Processes:\t\t(RUNQ: %d Disk Wait: %d Page Wait: "
 627             "%d Sleep: %d)\n",
 628             v->t_rq, v->t_dw, v->t_pw, v->t_sl);
 629         printf("Virtual Memory:\t\t(Total: %juK Active: %juK)\n",
 630             pg2k(v->t_vm), pg2k(v->t_avm));
 631         printf("Real Memory:\t\t(Total: %juK Active: %juK)\n",
 632             pg2k(v->t_rm), pg2k(v->t_arm));
 633         printf("Shared Virtual Memory:\t(Total: %juK Active: %juK)\n",
 634             pg2k(v->t_vmshr), pg2k(v->t_avmshr));
 635         printf("Shared Real Memory:\t(Total: %juK Active: %juK)\n",
 636             pg2k(v->t_rmshr), pg2k(v->t_armshr));
 637         printf("Free Memory:\t%juK", pg2k(v->t_free));
 638         return (0);
 639 }
 640
 641 #ifdef __amd64__
 642 static int
 643 S_efi_map(size_t l2, void *p)
 644 {
 645         struct efi_map_header *efihdr;
 646         struct efi_md *map;
 647         const char *type;
 648         size_t efisz;
 649         int ndesc, i;
 650
 651         static const char *types[] = {
 652                 "Reserved",
 653                 "LoaderCode",
 654                 "LoaderData",
 655                 "BootServicesCode",
 656                 "BootServicesData",
 657                 "RuntimeServicesCode",
 658                 "RuntimeServicesData",
 659                 "ConventionalMemory",
 660                 "UnusableMemory",
 661                 "ACPIReclaimMemory",
 662                 "ACPIMemoryNVS",
 663                 "MemoryMappedIO",
 664                 "MemoryMappedIOPortSpace",
 665                 "PalCode"
 666         };
 667
 668         /*
 669          * Memory map data provided by UEFI via the GetMemoryMap
 670          * Boot Services API.
 671          */
 672         if (l2 < sizeof(*efihdr)) {
 673                 warnx("S_efi_map length less than header");
 674                 return (1);
 675         }
 676         efihdr = p;
 677         efisz = (sizeof(struct efi_map_header) + 0xf) & ~0xf;
 678         map = (struct efi_md *)((uint8_t *)efihdr + efisz);
 679
 680         if (efihdr->descriptor_size == 0)
 681                 return (0);
 682         if (l2 != efisz + efihdr->memory_size) {
 683                 warnx("S_efi_map length mismatch %zu vs %zu", l2, efisz +
 684                     efihdr->memory_size);
 685                 return (1);
 686         }
 687         ndesc = efihdr->memory_size / efihdr->descriptor_size;
 688
 689         printf("\n%23s %12s %12s %8s %4s",
 690             "Type", "Physical", "Virtual", "#Pages", "Attr");
 691
 692         for (i = 0; i < ndesc; i++,
 693             map = efi_next_descriptor(map, efihdr->descriptor_size)) {
 694                 if (map->md_type <= EFI_MD_TYPE_PALCODE)
 695                         type = types[map->md_type];
 696                 else
 697                         type = "<INVALID>";
 698                 printf("\n%23s %012jx %12p %08jx ", type,
 699                     (uintmax_t)map->md_phys, map->md_virt,
 700                     (uintmax_t)map->md_pages);
 701                 if (map->md_attr & EFI_MD_ATTR_UC)
 702                         printf("UC ");
 703                 if (map->md_attr & EFI_MD_ATTR_WC)
 704                         printf("WC ");
 705                 if (map->md_attr & EFI_MD_ATTR_WT)
 706                         printf("WT ");
 707                 if (map->md_attr & EFI_MD_ATTR_WB)
 708                         printf("WB ");
 709                 if (map->md_attr & EFI_MD_ATTR_UCE)
 710                         printf("UCE ");
 711                 if (map->md_attr & EFI_MD_ATTR_WP)
 712                         printf("WP ");
 713                 if (map->md_attr & EFI_MD_ATTR_RP)
 714                         printf("RP ");
 715                 if (map->md_attr & EFI_MD_ATTR_XP)
 716                         printf("XP ");
 717                 if (map->md_attr & EFI_MD_ATTR_RT)
 718                         printf("RUNTIME");
 719         }
 720         return (0);
 721 }
 722 #endif
 723
 724 #if defined(__amd64__) || defined(__i386__)
 725 static int
 726 S_bios_smap_xattr(size_t l2, void *p)
 727 {
 728         struct bios_smap_xattr *smap, *end;
 729
 730         if (l2 % sizeof(*smap) != 0) {
 731                 warnx("S_bios_smap_xattr %zu is not a multiple of %zu", l2,
 732                     sizeof(*smap));
 733                 return (1);
 734         }
 735
 736         end = (struct bios_smap_xattr *)((char *)p + l2);
 737         for (smap = p; smap < end; smap++)
 738                 printf("\nSMAP type=%02x, xattr=%02x, base=%016jx, len=%016jx",
 739                     smap->type, smap->xattr, (uintmax_t)smap->base,
 740                     (uintmax_t)smap->length);
 741         return (0);
 742 }
 743 #endif
 744
 745 static int
 746 strIKtoi(const char *str, char **endptrp, const char *fmt)
 747 {
 748         int kelv;
 749         float temp;
 750         size_t len;
 751         const char *p;
 752         int prec, i;
 753
 754         assert(errno == 0);
 755
 756         len = strlen(str);
 757         /* caller already checked this */
 758         assert(len > 0);
 759
 760         /*
 761          * A format of "IK" is in deciKelvin. A format of "IK3" is in
 762          * milliKelvin. The single digit following IK is log10 of the
 763          * multiplying factor to convert Kelvin into the untis of this sysctl,
 764          * or the dividing factor to convert the sysctl value to Kelvin. Numbers
 765          * larger than 6 will run into precision issues with 32-bit integers.
 766          * Characters that aren't ASCII digits after the 'K' are ignored. No
 767          * localization is present because this is an interface from the kernel
 768          * to this program (eg not an end-user interface), so isdigit() isn't
 769          * used here.
 770          */
 771         if (fmt[2] != '\0' && fmt[2] >= '0' && fmt[2] <= '9')
 772                 prec = fmt[2] - '0';
 773         else
 774                 prec = 1;
 775         p = &str[len - 1];
 776         if (*p == 'C' || *p == 'F' || *p == 'K') {
 777                 temp = strtof(str, endptrp);
 778                 if (*endptrp != str && *endptrp == p && errno == 0) {
 779                         if (*p == 'F')
 780                                 temp = (temp - 32) * 5 / 9;
 781                         *endptrp = NULL;
 782                         if (*p != 'K')
 783                                 temp += 273.15;
 784                         for (i = 0; i < prec; i++)
 785                                 temp *= 10.0;
 786                         return ((int)(temp + 0.5));
 787                 }
 788         } else {
 789                 /* No unit specified -> treat it as a raw number */
 790                 kelv = (int)strtol(str, endptrp, 10);
 791                 if (*endptrp != str && *endptrp == p && errno == 0) {
 792                         *endptrp = NULL;
 793                         return (kelv);
 794                 }
 795         }
 796
 797         errno = ERANGE;
 798         return (0);
 799 }
 800
 801 /*
 802  * These functions uses a presently undocumented interface to the kernel
 803  * to walk the tree and get the type so it can print the value.
 804  * This interface is under work and consideration, and should probably
 805  * be killed with a big axe by the first person who can find the time.
 806  * (be aware though, that the proper interface isn't as obvious as it
 807  * may seem, there are various conflicting requirements.
 808  */
 809
 810 static int
 811 name2oid(const char *name, int *oidp)
 812 {
 813         int oid[2];
 814         int i;
 815         size_t j;
 816
 817         oid[0] = 0;
 818         oid[1] = 3;
 819
 820         j = CTL_MAXNAME * sizeof(int);
 821         i = sysctl(oid, 2, oidp, &j, name, strlen(name));
 822         if (i < 0)
 823                 return (i);
 824         j /= sizeof(int);
 825         return (j);
 826 }
 827
 828 static int
 829 oidfmt(int *oid, int len, char *fmt, u_int *kind)
 830 {
 831         int qoid[CTL_MAXNAME+2];
 832         u_char buf[BUFSIZ];
 833         int i;
 834         size_t j;
 835
 836         qoid[0] = 0;
 837         qoid[1] = 4;
 838         memcpy(qoid + 2, oid, len * sizeof(int));
 839
 840         j = sizeof(buf);
 841         i = sysctl(qoid, len + 2, buf, &j, 0, 0);
 842         if (i)
 843                 err(1, "sysctl fmt %d %zu %d", i, j, errno);
 844
 845         if (kind)
 846                 *kind = *(u_int *)buf;
 847
 848         if (fmt)
 849                 strcpy(fmt, (char *)(buf + sizeof(u_int)));
 850         return (0);
 851 }
 852
 853 /*
 854  * This formats and outputs the value of one variable
 855  *
 856  * Returns zero if anything was actually output.
 857  * Returns one if didn't know what to do with this.
 858  * Return minus one if we had errors.
 859  */
 860 static int
 861 show_var(int *oid, int nlen)
 862 {
 863         u_char buf[BUFSIZ], *val, *oval, *p;
 864         char name[BUFSIZ], fmt[BUFSIZ];
 865         const char *sep, *sep1, *prntype;
 866         int qoid[CTL_MAXNAME+2];
 867         uintmax_t umv;
 868         intmax_t mv;
 869         int i, hexlen, sign, ctltype;
 870         size_t intlen;
 871         size_t j, len;
 872         u_int kind;
 873         float base;
 874         int (*func)(size_t, void *);
 875         int prec;
 876
 877         /* Silence GCC. */
 878         umv = mv = intlen = 0;
 879
 880         bzero(buf, BUFSIZ);
 881         bzero(fmt, BUFSIZ);
 882         bzero(name, BUFSIZ);
 883         qoid[0] = 0;
 884         memcpy(qoid + 2, oid, nlen * sizeof(int));
 885
 886         qoid[1] = 1;
 887         j = sizeof(name);
 888         i = sysctl(qoid, nlen + 2, name, &j, 0, 0);
 889         if (i || !j)
 890                 err(1, "sysctl name %d %zu %d", i, j, errno);
 891
 892         oidfmt(oid, nlen, fmt, &kind);
 893         /* if Wflag then only list sysctls that are writeable and not stats. */
 894         if (Wflag && ((kind & CTLFLAG_WR) == 0 || (kind & CTLFLAG_STATS) != 0))
 895                 return 1;
 896
 897         /* if Tflag then only list sysctls that are tuneables. */
 898         if (Tflag && (kind & CTLFLAG_TUN) == 0)
 899                 return 1;
 900
 901         if (Nflag) {
 902                 printf("%s", name);
 903                 return (0);
 904         }
 905
 906         if (eflag)
 907                 sep = "=";
 908         else
 909                 sep = ": ";
 910
 911         ctltype = (kind & CTLTYPE);
 912         if (tflag || dflag) {
 913                 if (!nflag)
 914                         printf("%s%s", name, sep);
 915                 if (ctl_typename[ctltype] != NULL)
 916                         prntype = ctl_typename[ctltype];
 917                 else
 918                         prntype = "unknown";
 919                 if (tflag && dflag)
 920                         printf("%s%s", prntype, sep);
 921                 else if (tflag) {
 922                         printf("%s", prntype);
 923                         return (0);
 924                 }
 925                 qoid[1] = 5;
 926                 j = sizeof(buf);
 927                 i = sysctl(qoid, nlen + 2, buf, &j, 0, 0);
 928                 printf("%s", buf);
 929                 return (0);
 930         }
 931
 932         /* don't fetch opaques that we don't know how to print */
 933         if (ctltype == CTLTYPE_OPAQUE) {
 934                 if (strcmp(fmt, "S,clockinfo") == 0)
 935                         func = S_clockinfo;
 936                 else if (strcmp(fmt, "S,timeval") == 0)
 937                         func = S_timeval;
 938                 else if (strcmp(fmt, "S,loadavg") == 0)
 939                         func = S_loadavg;
 940                 else if (strcmp(fmt, "S,vmtotal") == 0)
 941                         func = S_vmtotal;
 942 #ifdef __amd64__
 943                 else if (strcmp(fmt, "S,efi_map_header") == 0)
 944                         func = S_efi_map;
 945 #endif
 946 #if defined(__amd64__) || defined(__i386__)
 947                 else if (strcmp(fmt, "S,bios_smap_xattr") == 0)
 948                         func = S_bios_smap_xattr;
 949 #endif
 950                 else {
 951                         func = NULL;
 952                         if (!bflag && !oflag && !xflag)
 953                                 return (1);
 954                 }
 955         }
 956
 957         /* find an estimate of how much we need for this var */
 958         if (Bflag)
 959                 j = Bflag;
 960         else {
 961                 j = 0;
 962                 i = sysctl(oid, nlen, 0, &j, 0, 0);
 963                 j += j; /* we want to be sure :-) */
 964         }
 965
 966         val = oval = malloc(j + 1);
 967         if (val == NULL) {
 968                 warnx("malloc failed");
 969                 return (1);
 970         }
 971         len = j;
 972         i = sysctl(oid, nlen, val, &len, 0, 0);
 973         if (i != 0 || (len == 0 && ctltype != CTLTYPE_STRING)) {
 974                 free(oval);
 975                 return (1);
 976         }
 977
 978         if (bflag) {
 979                 fwrite(val, 1, len, stdout);
 980                 free(oval);
 981                 return (0);
 982         }
 983         val[len] = '\0';
 984         p = val;
 985         sign = ctl_sign[ctltype];
 986         intlen = ctl_size[ctltype];
 987
 988         switch (ctltype) {
 989         case CTLTYPE_STRING:
 990                 if (!nflag)
 991                         printf("%s%s", name, sep);
 992                 printf("%.*s", (int)len, p);
 993                 free(oval);
 994                 return (0);
 995
 996         case CTLTYPE_INT:
 997         case CTLTYPE_UINT:
 998         case CTLTYPE_LONG:
 999         case CTLTYPE_ULONG:
1000         case CTLTYPE_S8:
1001         case CTLTYPE_S16:
1002         case CTLTYPE_S32:
1003         case CTLTYPE_S64:
1004         case CTLTYPE_U8:
1005         case CTLTYPE_U16:
1006         case CTLTYPE_U32:
1007         case CTLTYPE_U64:
1008                 if (!nflag)
1009                         printf("%s%s", name, sep);
1010                 hexlen = 2 + (intlen * CHAR_BIT + 3) / 4;
1011                 sep1 = "";
1012                 while (len >= intlen) {
1013                         switch (kind & CTLTYPE) {
1014                         case CTLTYPE_INT:
1015                         case CTLTYPE_UINT:
1016                                 umv = *(u_int *)p;
1017                                 mv = *(int *)p;
1018                                 break;
1019                         case CTLTYPE_LONG:
1020                         case CTLTYPE_ULONG:
1021                                 umv = *(u_long *)p;
1022                                 mv = *(long *)p;
1023                                 break;
1024                         case CTLTYPE_S8:
1025                         case CTLTYPE_U8:
1026                                 umv = *(uint8_t *)p;
1027                                 mv = *(int8_t *)p;
1028                                 break;
1029                         case CTLTYPE_S16:
1030                         case CTLTYPE_U16:
1031                                 umv = *(uint16_t *)p;
1032                                 mv = *(int16_t *)p;
1033                                 break;
1034                         case CTLTYPE_S32:
1035                         case CTLTYPE_U32:
1036                                 umv = *(uint32_t *)p;
1037                                 mv = *(int32_t *)p;
1038                                 break;
1039                         case CTLTYPE_S64:
1040                         case CTLTYPE_U64:
1041                                 umv = *(uint64_t *)p;
1042                                 mv = *(int64_t *)p;
1043                                 break;
1044                         }
1045                         fputs(sep1, stdout);
1046                         if (xflag)
1047                                 printf("%#0*jx", hexlen, umv);
1048                         else if (!sign)
1049                                 printf(hflag ? "%'ju" : "%ju", umv);
1050                         else if (fmt[1] == 'K') {
1051                                 if (mv < 0)
1052                                         printf("%jd", mv);
1053                                 else {
1054                                         /*
1055                                          * See strIKtoi for details on fmt.
1056                                          */
1057                                         prec = 1;
1058                                         if (fmt[2] != '\0')
1059                                                 prec = fmt[2] - '0';
1060                                         base = 1.0;
1061                                         for (int i = 0; i < prec; i++)
1062                                                 base *= 10.0;
1063                                         printf("%.*fC", prec,
1064                                             (float)mv / base - 273.15);
1065                                 }
1066                         } else
1067                                 printf(hflag ? "%'jd" : "%jd", mv);
1068                         sep1 = " ";
1069                         len -= intlen;
1070                         p += intlen;
1071                 }
1072                 free(oval);
1073                 return (0);
1074
1075         case CTLTYPE_OPAQUE:
1076                 i = 0;
1077                 if (func) {
1078                         if (!nflag)
1079                                 printf("%s%s", name, sep);
1080                         i = (*func)(len, p);
1081                         free(oval);
1082                         return (i);
1083                 }
1084                 /* FALLTHROUGH */
1085         default:
1086                 if (!oflag && !xflag) {
1087                         free(oval);
1088                         return (1);
1089                 }
1090                 if (!nflag)
1091                         printf("%s%s", name, sep);
1092                 printf("Format:%s Length:%zu Dump:0x", fmt, len);
1093                 while (len-- && (xflag || p < val + 16))
1094                         printf("%02x", *p++);
1095                 if (!xflag && len > 16)
1096                         printf("...");
1097                 free(oval);
1098                 return (0);
1099         }
1100         free(oval);
1101         return (1);
1102 }
1103
1104 static int
1105 sysctl_all(int *oid, int len)
1106 {
1107         int name1[22], name2[22];
1108         int i, j;
1109         size_t l1, l2;
1110
1111         name1[0] = 0;
1112         name1[1] = 2;
1113         l1 = 2;
1114         if (len) {
1115                 memcpy(name1+2, oid, len * sizeof(int));
1116                 l1 += len;
1117         } else {
1118                 name1[2] = 1;
1119                 l1++;
1120         }
1121         for (;;) {
1122                 l2 = sizeof(name2);
1123                 j = sysctl(name1, l1, name2, &l2, 0, 0);
1124                 if (j < 0) {
1125                         if (errno == ENOENT)
1126                                 return (0);
1127                         else
1128                                 err(1, "sysctl(getnext) %d %zu", j, l2);
1129                 }
1130
1131                 l2 /= sizeof(int);
1132
1133                 if (len < 0 || l2 < (unsigned int)len)
1134                         return (0);
1135
1136                 for (i = 0; i < len; i++)
1137                         if (name2[i] != oid[i])
1138                                 return (0);
1139
1140                 i = show_var(name2, l2);
1141                 if (!i && !bflag)
1142                         putchar('\n');
1143
1144                 memcpy(name1+2, name2, l2 * sizeof(int));
1145                 l1 = 2 + l2;
1146         }
1147 }