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 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34
35 #include <sys/param.h>
36 #include <sys/time.h>
37 #include <sys/resource.h>
38 #include <sys/stat.h>
39 #include <sys/sysctl.h>
40 #include <sys/vmmeter.h>
41 #include <dev/evdev/input.h>
42
43 #ifdef __amd64__
44 #include <sys/efi.h>
45 #include <machine/metadata.h>
46 #endif
47
48 #if defined(__amd64__) || defined(__i386__)
49 #include <machine/pc/bios.h>
50 #endif
51
52 #include <assert.h>
53 #include <ctype.h>
54 #include <err.h>
55 #include <errno.h>
56 #include <inttypes.h>
57 #include <locale.h>
58 #include <stdbool.h>
59 #include <stdio.h>
60 #include <stdlib.h>
61 #include <string.h>
62 #include <sysexits.h>
63 #include <unistd.h>
64
65 static const char *conffile;
66
67 static int aflag, bflag, Bflag, dflag, eflag, hflag, iflag;
68 static int Nflag, nflag, oflag, qflag, tflag, Tflag, Wflag, xflag;
69
70 static int oidfmt(int *, int, char *, u_int *);
71 static int parsefile(const char *);
72 static int parse(const char *, int);
73 static int show_var(int *, int, bool);
74 static int sysctl_all(int *, int);
75 static int name2oid(const char *, int *);
76
77 static int strIKtoi(const char *, char **, const char *);
78
79 static int ctl_sign[CTLTYPE+1] = {
80 [CTLTYPE_INT] = 1,
81 [CTLTYPE_LONG] = 1,
82 [CTLTYPE_S8] = 1,
83 [CTLTYPE_S16] = 1,
84 [CTLTYPE_S32] = 1,
85 [CTLTYPE_S64] = 1,
86 };
87
88 static int ctl_size[CTLTYPE+1] = {
89 [CTLTYPE_INT] = sizeof(int),
90 [CTLTYPE_UINT] = sizeof(u_int),
91 [CTLTYPE_LONG] = sizeof(long),
92 [CTLTYPE_ULONG] = sizeof(u_long),
93 [CTLTYPE_S8] = sizeof(int8_t),
94 [CTLTYPE_S16] = sizeof(int16_t),
95 [CTLTYPE_S32] = sizeof(int32_t),
96 [CTLTYPE_S64] = sizeof(int64_t),
97 [CTLTYPE_U8] = sizeof(uint8_t),
98 [CTLTYPE_U16] = sizeof(uint16_t),
99 [CTLTYPE_U32] = sizeof(uint32_t),
100 [CTLTYPE_U64] = sizeof(uint64_t),
101 };
102
103 static const char *ctl_typename[CTLTYPE+1] = {
104 [CTLTYPE_INT] = "integer",
105 [CTLTYPE_UINT] = "unsigned integer",
106 [CTLTYPE_LONG] = "long integer",
107 [CTLTYPE_ULONG] = "unsigned long",
108 [CTLTYPE_U8] = "uint8_t",
109 [CTLTYPE_U16] = "uint16_t",
110 [CTLTYPE_U32] = "uint32_t",
111 [CTLTYPE_U64] = "uint64_t",
112 [CTLTYPE_S8] = "int8_t",
113 [CTLTYPE_S16] = "int16_t",
114 [CTLTYPE_S32] = "int32_t",
115 [CTLTYPE_S64] = "int64_t",
116 [CTLTYPE_NODE] = "node",
117 [CTLTYPE_STRING] = "string",
118 [CTLTYPE_OPAQUE] = "opaque",
119 };
120
121 static void
usage(void)122 usage(void)
123 {
124
125 (void)fprintf(stderr, "%s\n%s\n",
126 "usage: sysctl [-bdehiNnoqTtWx] [ -B <bufsize> ] [-f filename] name[=value] ...",
127 " sysctl [-bdehNnoqTtWx] [ -B <bufsize> ] -a");
128 exit(1);
129 }
130
131 int
main(int argc,char ** argv)132 main(int argc, char **argv)
133 {
134 int ch;
135 int warncount = 0;
136
137 setlocale(LC_NUMERIC, "");
138 setbuf(stdout,0);
139 setbuf(stderr,0);
140
141 while ((ch = getopt(argc, argv, "AabB:def:hiNnoqtTwWxX")) != -1) {
142 switch (ch) {
143 case 'A':
144 /* compatibility */
145 aflag = oflag = 1;
146 break;
147 case 'a':
148 aflag = 1;
149 break;
150 case 'b':
151 bflag = 1;
152 break;
153 case 'B':
154 Bflag = strtol(optarg, NULL, 0);
155 break;
156 case 'd':
157 dflag = 1;
158 break;
159 case 'e':
160 eflag = 1;
161 break;
162 case 'f':
163 conffile = optarg;
164 break;
165 case 'h':
166 hflag = 1;
167 break;
168 case 'i':
169 iflag = 1;
170 break;
171 case 'N':
172 Nflag = 1;
173 break;
174 case 'n':
175 nflag = 1;
176 break;
177 case 'o':
178 oflag = 1;
179 break;
180 case 'q':
181 qflag = 1;
182 break;
183 case 't':
184 tflag = 1;
185 break;
186 case 'T':
187 Tflag = 1;
188 break;
189 case 'w':
190 /* compatibility */
191 /* ignored */
192 break;
193 case 'W':
194 Wflag = 1;
195 break;
196 case 'X':
197 /* compatibility */
198 aflag = xflag = 1;
199 break;
200 case 'x':
201 xflag = 1;
202 break;
203 default:
204 usage();
205 }
206 }
207 argc -= optind;
208 argv += optind;
209
210 if (Nflag && nflag)
211 usage();
212 if (aflag && argc == 0)
213 exit(sysctl_all(NULL, 0));
214 if (argc == 0 && conffile == NULL)
215 usage();
216
217 warncount = 0;
218 if (conffile != NULL)
219 warncount += parsefile(conffile);
220
221 while (argc-- > 0)
222 warncount += parse(*argv++, 0);
223
224 return (warncount);
225 }
226
227 /*
228 * Parse a single numeric value, append it to 'newbuf', and update
229 * 'newsize'. Returns true if the value was parsed and false if the
230 * value was invalid. Non-numeric types (strings) are handled
231 * directly in parse().
232 */
233 static bool
parse_numeric(const char * newvalstr,const char * fmt,u_int kind,void ** newbufp,size_t * newsizep)234 parse_numeric(const char *newvalstr, const char *fmt, u_int kind,
235 void **newbufp, size_t *newsizep)
236 {
237 void *newbuf;
238 const void *newval;
239 int8_t i8val;
240 uint8_t u8val;
241 int16_t i16val;
242 uint16_t u16val;
243 int32_t i32val;
244 uint32_t u32val;
245 int intval;
246 unsigned int uintval;
247 long longval;
248 unsigned long ulongval;
249 int64_t i64val;
250 uint64_t u64val;
251 size_t valsize;
252 char *endptr = NULL;
253
254 errno = 0;
255
256 switch (kind & CTLTYPE) {
257 case CTLTYPE_INT:
258 if (strncmp(fmt, "IK", 2) == 0)
259 intval = strIKtoi(newvalstr, &endptr, fmt);
260 else
261 intval = (int)strtol(newvalstr, &endptr, 0);
262 newval = &intval;
263 valsize = sizeof(intval);
264 break;
265 case CTLTYPE_UINT:
266 uintval = (int) strtoul(newvalstr, &endptr, 0);
267 newval = &uintval;
268 valsize = sizeof(uintval);
269 break;
270 case CTLTYPE_LONG:
271 longval = strtol(newvalstr, &endptr, 0);
272 newval = &longval;
273 valsize = sizeof(longval);
274 break;
275 case CTLTYPE_ULONG:
276 ulongval = strtoul(newvalstr, &endptr, 0);
277 newval = &ulongval;
278 valsize = sizeof(ulongval);
279 break;
280 case CTLTYPE_S8:
281 i8val = (int8_t)strtol(newvalstr, &endptr, 0);
282 newval = &i8val;
283 valsize = sizeof(i8val);
284 break;
285 case CTLTYPE_S16:
286 i16val = (int16_t)strtol(newvalstr, &endptr, 0);
287 newval = &i16val;
288 valsize = sizeof(i16val);
289 break;
290 case CTLTYPE_S32:
291 i32val = (int32_t)strtol(newvalstr, &endptr, 0);
292 newval = &i32val;
293 valsize = sizeof(i32val);
294 break;
295 case CTLTYPE_S64:
296 i64val = strtoimax(newvalstr, &endptr, 0);
297 newval = &i64val;
298 valsize = sizeof(i64val);
299 break;
300 case CTLTYPE_U8:
301 u8val = (uint8_t)strtoul(newvalstr, &endptr, 0);
302 newval = &u8val;
303 valsize = sizeof(u8val);
304 break;
305 case CTLTYPE_U16:
306 u16val = (uint16_t)strtoul(newvalstr, &endptr, 0);
307 newval = &u16val;
308 valsize = sizeof(u16val);
309 break;
310 case CTLTYPE_U32:
311 u32val = (uint32_t)strtoul(newvalstr, &endptr, 0);
312 newval = &u32val;
313 valsize = sizeof(u32val);
314 break;
315 case CTLTYPE_U64:
316 u64val = strtoumax(newvalstr, &endptr, 0);
317 newval = &u64val;
318 valsize = sizeof(u64val);
319 break;
320 default:
321 /* NOTREACHED */
322 abort();
323 }
324
325 if (errno != 0 || endptr == newvalstr ||
326 (endptr != NULL && *endptr != '\0'))
327 return (false);
328
329 newbuf = realloc(*newbufp, *newsizep + valsize);
330 if (newbuf == NULL)
331 err(1, "out of memory");
332 memcpy((char *)newbuf + *newsizep, newval, valsize);
333 *newbufp = newbuf;
334 *newsizep += valsize;
335
336 return (true);
337 }
338
339 /*
340 * Parse a name into a MIB entry.
341 * Lookup and print out the MIB entry if it exists.
342 * Set a new value if requested.
343 */
344 static int
parse(const char * string,int lineno)345 parse(const char *string, int lineno)
346 {
347 int len, i, j, save_errno;
348 const void *newval;
349 char *newvalstr = NULL;
350 void *newbuf;
351 size_t newsize = Bflag;
352 int mib[CTL_MAXNAME];
353 char *cp, *bufp, *buf, fmt[BUFSIZ], line[BUFSIZ];
354 u_int kind;
355
356 if (lineno)
357 snprintf(line, sizeof(line), " at line %d", lineno);
358 else
359 line[0] = '\0';
360
361 /*
362 * Split the string into name and value.
363 *
364 * Either = or : may be used as the delimiter.
365 * Whitespace surrounding the delimiter is trimmed.
366 * Quotes around the value are stripped.
367 */
368 cp = buf = strdup(string);
369 bufp = strsep(&cp, "=:");
370 if (cp != NULL) {
371 /* Tflag just lists tunables, do not allow assignment */
372 if (Tflag || Wflag) {
373 warnx("Can't set variables when using -T or -W");
374 usage();
375 }
376 /* Trim whitespace before the value. */
377 while (isspace(*cp))
378 cp++;
379 /* Strip a pair of " or ' if any. */
380 switch (*cp) {
381 case '\"':
382 case '\'':
383 if (cp[strlen(cp) - 1] == *cp)
384 cp[strlen(cp) - 1] = '\0';
385 cp++;
386 }
387 newvalstr = cp;
388 newsize = strlen(cp);
389 }
390 /* Trim whitespace after the name. */
391 cp = bufp + strlen(bufp) - 1;
392 while (cp >= bufp && isspace((int)*cp)) {
393 *cp = '\0';
394 cp--;
395 }
396
397 /*
398 * Check the name is a useable oid.
399 */
400 len = name2oid(bufp, mib);
401 if (len < 0) {
402 if (iflag) {
403 free(buf);
404 return (0);
405 }
406 if (!qflag) {
407 if (errno == ENOENT) {
408 warnx("unknown oid '%s'%s", bufp, line);
409 } else {
410 warn("unknown oid '%s'%s", bufp, line);
411 }
412 }
413 free(buf);
414 return (1);
415 }
416
417 if (oidfmt(mib, len, fmt, &kind)) {
418 warn("couldn't find format of oid '%s'%s", bufp, line);
419 free(buf);
420 if (iflag)
421 return (1);
422 else
423 exit(1);
424 }
425
426 /*
427 * We have a useable oid to work with. If there is no value given,
428 * show the node and its children. Otherwise, set the new value.
429 */
430 if (newvalstr == NULL || dflag) {
431 free(buf);
432 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
433 if (dflag) {
434 i = show_var(mib, len, false);
435 if (!i && !bflag)
436 putchar('\n');
437 }
438 sysctl_all(mib, len);
439 } else {
440 i = show_var(mib, len, false);
441 if (!i && !bflag)
442 putchar('\n');
443 }
444 return (0);
445 }
446
447 /*
448 * We have a new value to set. Check its validity and parse if numeric.
449 */
450 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
451 warnx("oid '%s' isn't a leaf node%s", bufp, line);
452 free(buf);
453 return (1);
454 }
455
456 if (!(kind & CTLFLAG_WR)) {
457 if (kind & CTLFLAG_TUN) {
458 warnx("oid '%s' is a read only tunable%s", bufp, line);
459 warnx("Tunable values are set in /boot/loader.conf");
460 } else
461 warnx("oid '%s' is read only%s", bufp, line);
462 free(buf);
463 return (1);
464 }
465
466 switch (kind & CTLTYPE) {
467 case CTLTYPE_INT:
468 case CTLTYPE_UINT:
469 case CTLTYPE_LONG:
470 case CTLTYPE_ULONG:
471 case CTLTYPE_S8:
472 case CTLTYPE_S16:
473 case CTLTYPE_S32:
474 case CTLTYPE_S64:
475 case CTLTYPE_U8:
476 case CTLTYPE_U16:
477 case CTLTYPE_U32:
478 case CTLTYPE_U64:
479 if (strlen(newvalstr) == 0) {
480 warnx("empty numeric value");
481 free(buf);
482 return (1);
483 }
484 /* FALLTHROUGH */
485 case CTLTYPE_STRING:
486 break;
487 default:
488 warnx("oid '%s' is type %d, cannot set that%s",
489 bufp, kind & CTLTYPE, line);
490 free(buf);
491 return (1);
492 }
493
494 newbuf = NULL;
495
496 switch (kind & CTLTYPE) {
497 case CTLTYPE_STRING:
498 newval = newvalstr;
499 break;
500 default:
501 newsize = 0;
502 while ((cp = strsep(&newvalstr, " ,")) != NULL) {
503 if (*cp == '\0')
504 continue;
505 if (!parse_numeric(cp, fmt, kind, &newbuf, &newsize)) {
506 warnx("invalid %s '%s'%s",
507 ctl_typename[kind & CTLTYPE], cp, line);
508 free(newbuf);
509 free(buf);
510 return (1);
511 }
512 }
513 newval = newbuf;
514 break;
515 }
516
517 /*
518 * Show the current value, then set and show the new value.
519 */
520 i = show_var(mib, len, false);
521 if (sysctl(mib, len, 0, 0, newval, newsize) == -1) {
522 save_errno = errno;
523 free(newbuf);
524 free(buf);
525 if (!i && !bflag)
526 putchar('\n');
527 switch (save_errno) {
528 case EOPNOTSUPP:
529 warnx("%s: value is not available%s",
530 string, line);
531 return (1);
532 case ENOTDIR:
533 warnx("%s: specification is incomplete%s",
534 string, line);
535 return (1);
536 case ENOMEM:
537 warnx("%s: type is unknown to this program%s",
538 string, line);
539 return (1);
540 default:
541 warnc(save_errno, "%s%s", string, line);
542 return (1);
543 }
544 }
545 free(newbuf);
546 free(buf);
547 if (!bflag)
548 printf(" -> ");
549 i = nflag;
550 nflag = 1;
551 j = show_var(mib, len, false);
552 if (!j && !bflag)
553 putchar('\n');
554 nflag = i;
555
556 return (0);
557 }
558
559 static int
parsefile(const char * filename)560 parsefile(const char *filename)
561 {
562 FILE *file;
563 char line[BUFSIZ], *p, *pq, *pdq;
564 int warncount = 0, lineno = 0;
565
566 file = fopen(filename, "r");
567 if (file == NULL)
568 err(EX_NOINPUT, "%s", filename);
569 while (fgets(line, sizeof(line), file) != NULL) {
570 lineno++;
571 p = line;
572 pq = strchr(line, '\'');
573 pdq = strchr(line, '\"');
574 /* Replace the first # with \0. */
575 while((p = strchr(p, '#')) != NULL) {
576 if (pq != NULL && p > pq) {
577 if ((p = strchr(pq+1, '\'')) != NULL)
578 *(++p) = '\0';
579 break;
580 } else if (pdq != NULL && p > pdq) {
581 if ((p = strchr(pdq+1, '\"')) != NULL)
582 *(++p) = '\0';
583 break;
584 } else if (p == line || *(p-1) != '\\') {
585 *p = '\0';
586 break;
587 }
588 p++;
589 }
590 /* Trim spaces */
591 p = line + strlen(line) - 1;
592 while (p >= line && isspace((int)*p)) {
593 *p = '\0';
594 p--;
595 }
596 p = line;
597 while (isspace((int)*p))
598 p++;
599 if (*p == '\0')
600 continue;
601 else
602 warncount += parse(p, lineno);
603 }
604 fclose(file);
605
606 return (warncount);
607 }
608
609 /* These functions will dump out various interesting structures. */
610
611 static int
S_clockinfo(size_t l2,void * p)612 S_clockinfo(size_t l2, void *p)
613 {
614 struct clockinfo *ci = (struct clockinfo*)p;
615
616 if (l2 != sizeof(*ci)) {
617 warnx("S_clockinfo %zu != %zu", l2, sizeof(*ci));
618 return (1);
619 }
620 printf(hflag ? "{ hz = %'d, tick = %'d, profhz = %'d, stathz = %'d }" :
621 "{ hz = %d, tick = %d, profhz = %d, stathz = %d }",
622 ci->hz, ci->tick, ci->profhz, ci->stathz);
623 return (0);
624 }
625
626 static int
S_loadavg(size_t l2,void * p)627 S_loadavg(size_t l2, void *p)
628 {
629 struct loadavg *tv = (struct loadavg*)p;
630
631 if (l2 != sizeof(*tv)) {
632 warnx("S_loadavg %zu != %zu", l2, sizeof(*tv));
633 return (1);
634 }
635 printf(hflag ? "{ %'.2f %'.2f %'.2f }" : "{ %.2f %.2f %.2f }",
636 (double)tv->ldavg[0]/(double)tv->fscale,
637 (double)tv->ldavg[1]/(double)tv->fscale,
638 (double)tv->ldavg[2]/(double)tv->fscale);
639 return (0);
640 }
641
642 static int
S_timeval(size_t l2,void * p)643 S_timeval(size_t l2, void *p)
644 {
645 struct timeval *tv = (struct timeval*)p;
646 time_t tv_sec;
647 char *p1, *p2;
648
649 if (l2 != sizeof(*tv)) {
650 warnx("S_timeval %zu != %zu", l2, sizeof(*tv));
651 return (1);
652 }
653 printf(hflag ? "{ sec = %'jd, usec = %'ld } " :
654 "{ sec = %jd, usec = %ld } ",
655 (intmax_t)tv->tv_sec, tv->tv_usec);
656 tv_sec = tv->tv_sec;
657 p1 = strdup(ctime(&tv_sec));
658 for (p2=p1; *p2 ; p2++)
659 if (*p2 == '\n')
660 *p2 = '\0';
661 fputs(p1, stdout);
662 free(p1);
663 return (0);
664 }
665
666 static int
S_vmtotal(size_t l2,void * p)667 S_vmtotal(size_t l2, void *p)
668 {
669 struct vmtotal *v;
670 int pageKilo;
671
672 if (l2 != sizeof(*v)) {
673 warnx("S_vmtotal %zu != %zu", l2, sizeof(*v));
674 return (1);
675 }
676
677 v = p;
678 pageKilo = getpagesize() / 1024;
679
680 #define pg2k(a) ((uintmax_t)(a) * pageKilo)
681 printf("\nSystem wide totals computed every five seconds:"
682 " (values in kilobytes)\n");
683 printf("===============================================\n");
684 printf("Processes:\t\t(RUNQ: %d Disk Wait: %d Page Wait: "
685 "%d Sleep: %d)\n",
686 v->t_rq, v->t_dw, v->t_pw, v->t_sl);
687 printf("Virtual Memory:\t\t(Total: %juK Active: %juK)\n",
688 pg2k(v->t_vm), pg2k(v->t_avm));
689 printf("Real Memory:\t\t(Total: %juK Active: %juK)\n",
690 pg2k(v->t_rm), pg2k(v->t_arm));
691 printf("Shared Virtual Memory:\t(Total: %juK Active: %juK)\n",
692 pg2k(v->t_vmshr), pg2k(v->t_avmshr));
693 printf("Shared Real Memory:\t(Total: %juK Active: %juK)\n",
694 pg2k(v->t_rmshr), pg2k(v->t_armshr));
695 printf("Free Memory:\t%juK", pg2k(v->t_free));
696 return (0);
697 }
698
699 static int
S_input_id(size_t l2,void * p)700 S_input_id(size_t l2, void *p)
701 {
702 struct input_id *id = p;
703
704 if (l2 != sizeof(*id)) {
705 warnx("S_input_id %zu != %zu", l2, sizeof(*id));
706 return (1);
707 }
708
709 printf("{ bustype = 0x%04x, vendor = 0x%04x, "
710 "product = 0x%04x, version = 0x%04x }",
711 id->bustype, id->vendor, id->product, id->version);
712 return (0);
713 }
714
715 static int
S_pagesizes(size_t l2,void * p)716 S_pagesizes(size_t l2, void *p)
717 {
718 char buf[256];
719 u_long *ps;
720 size_t l;
721 int i;
722
723 l = snprintf(buf, sizeof(buf), "{ ");
724 ps = p;
725 for (i = 0; i * sizeof(*ps) < l2 && ps[i] != 0 && l < sizeof(buf);
726 i++) {
727 l += snprintf(&buf[l], sizeof(buf) - l,
728 "%s%lu", i == 0 ? "" : ", ", ps[i]);
729 }
730 if (l < sizeof(buf))
731 (void)snprintf(&buf[l], sizeof(buf) - l, " }");
732
733 printf("%s", buf);
734
735 return (0);
736 }
737
738 #ifdef __amd64__
739 static int
S_efi_map(size_t l2,void * p)740 S_efi_map(size_t l2, void *p)
741 {
742 struct efi_map_header *efihdr;
743 struct efi_md *map;
744 const char *type;
745 size_t efisz;
746 int ndesc, i;
747
748 static const char * const types[] = {
749 [EFI_MD_TYPE_NULL] = "Reserved",
750 [EFI_MD_TYPE_CODE] = "LoaderCode",
751 [EFI_MD_TYPE_DATA] = "LoaderData",
752 [EFI_MD_TYPE_BS_CODE] = "BootServicesCode",
753 [EFI_MD_TYPE_BS_DATA] = "BootServicesData",
754 [EFI_MD_TYPE_RT_CODE] = "RuntimeServicesCode",
755 [EFI_MD_TYPE_RT_DATA] = "RuntimeServicesData",
756 [EFI_MD_TYPE_FREE] = "ConventionalMemory",
757 [EFI_MD_TYPE_BAD] = "UnusableMemory",
758 [EFI_MD_TYPE_RECLAIM] = "ACPIReclaimMemory",
759 [EFI_MD_TYPE_FIRMWARE] = "ACPIMemoryNVS",
760 [EFI_MD_TYPE_IOMEM] = "MemoryMappedIO",
761 [EFI_MD_TYPE_IOPORT] = "MemoryMappedIOPortSpace",
762 [EFI_MD_TYPE_PALCODE] = "PalCode",
763 [EFI_MD_TYPE_PERSISTENT] = "PersistentMemory",
764 };
765
766 /*
767 * Memory map data provided by UEFI via the GetMemoryMap
768 * Boot Services API.
769 */
770 if (l2 < sizeof(*efihdr)) {
771 warnx("S_efi_map length less than header");
772 return (1);
773 }
774 efihdr = p;
775 efisz = (sizeof(struct efi_map_header) + 0xf) & ~0xf;
776 map = (struct efi_md *)((uint8_t *)efihdr + efisz);
777
778 if (efihdr->descriptor_size == 0)
779 return (0);
780 if (l2 != efisz + efihdr->memory_size) {
781 warnx("S_efi_map length mismatch %zu vs %zu", l2, efisz +
782 efihdr->memory_size);
783 return (1);
784 }
785 ndesc = efihdr->memory_size / efihdr->descriptor_size;
786
787 printf("\n%23s %12s %12s %8s %4s",
788 "Type", "Physical", "Virtual", "#Pages", "Attr");
789
790 for (i = 0; i < ndesc; i++,
791 map = efi_next_descriptor(map, efihdr->descriptor_size)) {
792 type = NULL;
793 if (map->md_type < nitems(types))
794 type = types[map->md_type];
795 if (type == NULL)
796 type = "<INVALID>";
797 printf("\n%23s %012jx %12p %08jx ", type,
798 (uintmax_t)map->md_phys, map->md_virt,
799 (uintmax_t)map->md_pages);
800 if (map->md_attr & EFI_MD_ATTR_UC)
801 printf("UC ");
802 if (map->md_attr & EFI_MD_ATTR_WC)
803 printf("WC ");
804 if (map->md_attr & EFI_MD_ATTR_WT)
805 printf("WT ");
806 if (map->md_attr & EFI_MD_ATTR_WB)
807 printf("WB ");
808 if (map->md_attr & EFI_MD_ATTR_UCE)
809 printf("UCE ");
810 if (map->md_attr & EFI_MD_ATTR_WP)
811 printf("WP ");
812 if (map->md_attr & EFI_MD_ATTR_RP)
813 printf("RP ");
814 if (map->md_attr & EFI_MD_ATTR_XP)
815 printf("XP ");
816 if (map->md_attr & EFI_MD_ATTR_RT)
817 printf("RUNTIME");
818 }
819 return (0);
820 }
821 #endif
822
823 #if defined(__amd64__) || defined(__i386__)
824 static int
S_bios_smap_xattr(size_t l2,void * p)825 S_bios_smap_xattr(size_t l2, void *p)
826 {
827 struct bios_smap_xattr *smap, *end;
828
829 if (l2 % sizeof(*smap) != 0) {
830 warnx("S_bios_smap_xattr %zu is not a multiple of %zu", l2,
831 sizeof(*smap));
832 return (1);
833 }
834
835 end = (struct bios_smap_xattr *)((char *)p + l2);
836 for (smap = p; smap < end; smap++)
837 printf("\nSMAP type=%02x, xattr=%02x, base=%016jx, len=%016jx",
838 smap->type, smap->xattr, (uintmax_t)smap->base,
839 (uintmax_t)smap->length);
840 return (0);
841 }
842 #endif
843
844 static int
strIKtoi(const char * str,char ** endptrp,const char * fmt)845 strIKtoi(const char *str, char **endptrp, const char *fmt)
846 {
847 int kelv;
848 float temp;
849 size_t len;
850 const char *p;
851 int prec, i;
852
853 assert(errno == 0);
854
855 len = strlen(str);
856 /* caller already checked this */
857 assert(len > 0);
858
859 /*
860 * A format of "IK" is in deciKelvin. A format of "IK3" is in
861 * milliKelvin. The single digit following IK is log10 of the
862 * multiplying factor to convert Kelvin into the untis of this sysctl,
863 * or the dividing factor to convert the sysctl value to Kelvin. Numbers
864 * larger than 6 will run into precision issues with 32-bit integers.
865 * Characters that aren't ASCII digits after the 'K' are ignored. No
866 * localization is present because this is an interface from the kernel
867 * to this program (eg not an end-user interface), so isdigit() isn't
868 * used here.
869 */
870 if (fmt[2] != '\0' && fmt[2] >= '0' && fmt[2] <= '9')
871 prec = fmt[2] - '0';
872 else
873 prec = 1;
874 p = &str[len - 1];
875 if (*p == 'C' || *p == 'F' || *p == 'K') {
876 temp = strtof(str, endptrp);
877 if (*endptrp != str && *endptrp == p && errno == 0) {
878 if (*p == 'F')
879 temp = (temp - 32) * 5 / 9;
880 *endptrp = NULL;
881 if (*p != 'K')
882 temp += 273.15;
883 for (i = 0; i < prec; i++)
884 temp *= 10.0;
885 return ((int)(temp + 0.5));
886 }
887 } else {
888 /* No unit specified -> treat it as a raw number */
889 kelv = (int)strtol(str, endptrp, 10);
890 if (*endptrp != str && *endptrp == p && errno == 0) {
891 *endptrp = NULL;
892 return (kelv);
893 }
894 }
895
896 errno = ERANGE;
897 return (0);
898 }
899
900 /*
901 * These functions uses a presently undocumented interface to the kernel
902 * to walk the tree and get the type so it can print the value.
903 * This interface is under work and consideration, and should probably
904 * be killed with a big axe by the first person who can find the time.
905 * (be aware though, that the proper interface isn't as obvious as it
906 * may seem, there are various conflicting requirements.
907 */
908
909 static int
name2oid(const char * name,int * oidp)910 name2oid(const char *name, int *oidp)
911 {
912 int oid[2];
913 int i;
914 size_t j;
915
916 oid[0] = CTL_SYSCTL;
917 oid[1] = CTL_SYSCTL_NAME2OID;
918
919 j = CTL_MAXNAME * sizeof(int);
920 i = sysctl(oid, 2, oidp, &j, name, strlen(name));
921 if (i < 0)
922 return (i);
923 j /= sizeof(int);
924 return (j);
925 }
926
927 static int
oidfmt(int * oid,int len,char * fmt,u_int * kind)928 oidfmt(int *oid, int len, char *fmt, u_int *kind)
929 {
930 int qoid[CTL_MAXNAME+2];
931 u_char buf[BUFSIZ];
932 int i;
933 size_t j;
934
935 qoid[0] = CTL_SYSCTL;
936 qoid[1] = CTL_SYSCTL_OIDFMT;
937 memcpy(qoid + 2, oid, len * sizeof(int));
938
939 j = sizeof(buf);
940 i = sysctl(qoid, len + 2, buf, &j, 0, 0);
941 if (i)
942 err(1, "sysctl fmt %d %zu %d", i, j, errno);
943
944 if (kind)
945 *kind = *(u_int *)buf;
946
947 if (fmt)
948 strcpy(fmt, (char *)(buf + sizeof(u_int)));
949 return (0);
950 }
951
952 /*
953 * This formats and outputs the value of one variable
954 *
955 * Returns zero if anything was actually output.
956 * Returns one if didn't know what to do with this.
957 * Return minus one if we had errors.
958 */
959 static int
show_var(int * oid,int nlen,bool honor_skip)960 show_var(int *oid, int nlen, bool honor_skip)
961 {
962 static int skip_len = 0, skip_oid[CTL_MAXNAME];
963 u_char buf[BUFSIZ], *val, *oval, *p;
964 char name[BUFSIZ], fmt[BUFSIZ];
965 const char *sep, *sep1, *prntype;
966 int qoid[CTL_MAXNAME+2];
967 uintmax_t umv;
968 intmax_t mv;
969 int i, hexlen, sign, ctltype;
970 size_t intlen;
971 size_t j, len;
972 u_int kind;
973 float base;
974 int (*func)(size_t, void *);
975 int prec;
976
977 /* Silence GCC. */
978 umv = mv = intlen = 0;
979
980 bzero(buf, BUFSIZ);
981 bzero(fmt, BUFSIZ);
982 bzero(name, BUFSIZ);
983 qoid[0] = CTL_SYSCTL;
984 memcpy(qoid + 2, oid, nlen * sizeof(int));
985
986 qoid[1] = CTL_SYSCTL_NAME;
987 j = sizeof(name);
988 i = sysctl(qoid, nlen + 2, name, &j, 0, 0);
989 if (i || !j)
990 err(1, "sysctl name %d %zu %d", i, j, errno);
991
992 oidfmt(oid, nlen, fmt, &kind);
993 /* if Wflag then only list sysctls that are writeable and not stats. */
994 if (Wflag && ((kind & CTLFLAG_WR) == 0 || (kind & CTLFLAG_STATS) != 0))
995 return (1);
996
997 /* if Tflag then only list sysctls that are tuneables. */
998 if (Tflag && (kind & CTLFLAG_TUN) == 0)
999 return (1);
1000
1001 if (Nflag) {
1002 printf("%s", name);
1003 return (0);
1004 }
1005
1006 if (eflag)
1007 sep = "=";
1008 else
1009 sep = ": ";
1010
1011 ctltype = (kind & CTLTYPE);
1012 if (tflag || dflag) {
1013 if (!nflag)
1014 printf("%s%s", name, sep);
1015 if (ctl_typename[ctltype] != NULL)
1016 prntype = ctl_typename[ctltype];
1017 else
1018 prntype = "unknown";
1019 if (tflag && dflag)
1020 printf("%s%s", prntype, sep);
1021 else if (tflag) {
1022 printf("%s", prntype);
1023 return (0);
1024 }
1025 qoid[1] = CTL_SYSCTL_OIDDESCR;
1026 j = sizeof(buf);
1027 i = sysctl(qoid, nlen + 2, buf, &j, 0, 0);
1028 printf("%s", buf);
1029 return (0);
1030 }
1031
1032 /* keep track of encountered skip nodes, ignoring descendants */
1033 if ((skip_len == 0 || skip_len >= nlen * (int)sizeof(int)) &&
1034 (kind & CTLFLAG_SKIP) != 0) {
1035 /* Save this oid so we can skip descendants. */
1036 skip_len = nlen * sizeof(int);
1037 memcpy(skip_oid, oid, skip_len);
1038 }
1039
1040 /* bail before fetching the value if we're honoring skip */
1041 if (honor_skip) {
1042 if (0 < skip_len && skip_len <= nlen * (int)sizeof(int) &&
1043 memcmp(skip_oid, oid, skip_len) == 0)
1044 return (1);
1045 /* Not a skip node or descendant of a skip node. */
1046 skip_len = 0;
1047 }
1048
1049 /* don't fetch opaques that we don't know how to print */
1050 if (ctltype == CTLTYPE_OPAQUE) {
1051 if (strcmp(fmt, "S,clockinfo") == 0)
1052 func = S_clockinfo;
1053 else if (strcmp(fmt, "S,timeval") == 0)
1054 func = S_timeval;
1055 else if (strcmp(fmt, "S,loadavg") == 0)
1056 func = S_loadavg;
1057 else if (strcmp(fmt, "S,vmtotal") == 0)
1058 func = S_vmtotal;
1059 else if (strcmp(fmt, "S,input_id") == 0)
1060 func = S_input_id;
1061 else if (strcmp(fmt, "S,pagesizes") == 0)
1062 func = S_pagesizes;
1063 #ifdef __amd64__
1064 else if (strcmp(fmt, "S,efi_map_header") == 0)
1065 func = S_efi_map;
1066 #endif
1067 #if defined(__amd64__) || defined(__i386__)
1068 else if (strcmp(fmt, "S,bios_smap_xattr") == 0)
1069 func = S_bios_smap_xattr;
1070 #endif
1071 else {
1072 func = NULL;
1073 if (!bflag && !oflag && !xflag)
1074 return (1);
1075 }
1076 }
1077
1078 /* find an estimate of how much we need for this var */
1079 if (Bflag)
1080 j = Bflag;
1081 else {
1082 j = 0;
1083 i = sysctl(oid, nlen, 0, &j, 0, 0);
1084 j += j; /* we want to be sure :-) */
1085 }
1086
1087 val = oval = malloc(j + 1);
1088 if (val == NULL) {
1089 warnx("malloc failed");
1090 return (1);
1091 }
1092 len = j;
1093 i = sysctl(oid, nlen, val, &len, 0, 0);
1094 if (i != 0 || (len == 0 && ctltype != CTLTYPE_STRING)) {
1095 free(oval);
1096 return (1);
1097 }
1098
1099 if (bflag) {
1100 fwrite(val, 1, len, stdout);
1101 free(oval);
1102 return (0);
1103 }
1104 val[len] = '\0';
1105 p = val;
1106 sign = ctl_sign[ctltype];
1107 intlen = ctl_size[ctltype];
1108
1109 switch (ctltype) {
1110 case CTLTYPE_STRING:
1111 if (!nflag)
1112 printf("%s%s", name, sep);
1113 printf("%.*s", (int)len, p);
1114 free(oval);
1115 return (0);
1116
1117 case CTLTYPE_INT:
1118 case CTLTYPE_UINT:
1119 case CTLTYPE_LONG:
1120 case CTLTYPE_ULONG:
1121 case CTLTYPE_S8:
1122 case CTLTYPE_S16:
1123 case CTLTYPE_S32:
1124 case CTLTYPE_S64:
1125 case CTLTYPE_U8:
1126 case CTLTYPE_U16:
1127 case CTLTYPE_U32:
1128 case CTLTYPE_U64:
1129 if (!nflag)
1130 printf("%s%s", name, sep);
1131 hexlen = 2 + (intlen * CHAR_BIT + 3) / 4;
1132 sep1 = "";
1133 while (len >= intlen) {
1134 switch (kind & CTLTYPE) {
1135 case CTLTYPE_INT:
1136 case CTLTYPE_UINT:
1137 umv = *(u_int *)p;
1138 mv = *(int *)p;
1139 break;
1140 case CTLTYPE_LONG:
1141 case CTLTYPE_ULONG:
1142 umv = *(u_long *)p;
1143 mv = *(long *)p;
1144 break;
1145 case CTLTYPE_S8:
1146 case CTLTYPE_U8:
1147 umv = *(uint8_t *)p;
1148 mv = *(int8_t *)p;
1149 break;
1150 case CTLTYPE_S16:
1151 case CTLTYPE_U16:
1152 umv = *(uint16_t *)p;
1153 mv = *(int16_t *)p;
1154 break;
1155 case CTLTYPE_S32:
1156 case CTLTYPE_U32:
1157 umv = *(uint32_t *)p;
1158 mv = *(int32_t *)p;
1159 break;
1160 case CTLTYPE_S64:
1161 case CTLTYPE_U64:
1162 umv = *(uint64_t *)p;
1163 mv = *(int64_t *)p;
1164 break;
1165 }
1166 fputs(sep1, stdout);
1167 if (xflag)
1168 printf("%#0*jx", hexlen, umv);
1169 else if (!sign)
1170 printf(hflag ? "%'ju" : "%ju", umv);
1171 else if (fmt[1] == 'K') {
1172 if (mv < 0)
1173 printf("%jd", mv);
1174 else {
1175 /*
1176 * See strIKtoi for details on fmt.
1177 */
1178 prec = 1;
1179 if (fmt[2] != '\0')
1180 prec = fmt[2] - '0';
1181 base = 1.0;
1182 for (int i = 0; i < prec; i++)
1183 base *= 10.0;
1184 printf("%.*fC", prec,
1185 (float)mv / base - 273.15);
1186 }
1187 } else
1188 printf(hflag ? "%'jd" : "%jd", mv);
1189 sep1 = " ";
1190 len -= intlen;
1191 p += intlen;
1192 }
1193 free(oval);
1194 return (0);
1195
1196 case CTLTYPE_OPAQUE:
1197 i = 0;
1198 if (func) {
1199 if (!nflag)
1200 printf("%s%s", name, sep);
1201 i = (*func)(len, p);
1202 free(oval);
1203 return (i);
1204 }
1205 /* FALLTHROUGH */
1206 default:
1207 if (!oflag && !xflag) {
1208 free(oval);
1209 return (1);
1210 }
1211 if (!nflag)
1212 printf("%s%s", name, sep);
1213 printf("Format:%s Length:%zu Dump:0x", fmt, len);
1214 while (len-- && (xflag || p < val + 16))
1215 printf("%02x", *p++);
1216 if (!xflag && len > 16)
1217 printf("...");
1218 free(oval);
1219 return (0);
1220 }
1221 free(oval);
1222 return (1);
1223 }
1224
1225 static int
sysctl_all(int * oid,int len)1226 sysctl_all(int *oid, int len)
1227 {
1228 int name1[22], name2[22];
1229 int i, j;
1230 size_t l1, l2;
1231
1232 name1[0] = CTL_SYSCTL;
1233 name1[1] = (oid != NULL || Nflag || dflag || tflag) ?
1234 CTL_SYSCTL_NEXTNOSKIP : CTL_SYSCTL_NEXT;
1235 l1 = 2;
1236 if (len) {
1237 memcpy(name1 + 2, oid, len * sizeof(int));
1238 l1 += len;
1239 } else {
1240 name1[2] = CTL_KERN;
1241 l1++;
1242 }
1243 for (;;) {
1244 l2 = sizeof(name2);
1245 j = sysctl(name1, l1, name2, &l2, 0, 0);
1246 if (j < 0) {
1247 if (errno == ENOENT)
1248 return (0);
1249 else
1250 err(1, "sysctl(getnext) %d %zu", j, l2);
1251 }
1252
1253 l2 /= sizeof(int);
1254
1255 if (len < 0 || l2 < (unsigned int)len)
1256 return (0);
1257
1258 if (memcmp(name2, oid, len * sizeof(int)) != 0)
1259 return (0);
1260
1261 i = show_var(name2, l2, true);
1262 if (!i && !bflag)
1263 putchar('\n');
1264
1265 memcpy(name1 + 2, name2, l2 * sizeof(int));
1266 l1 = 2 + l2;
1267 }
1268 }
1269