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 #ifndef FSTACK
36 #include <sys/param.h>
37 #include <sys/time.h>
38 #include <sys/resource.h>
39 #include <sys/stat.h>
40 #include <sys/sysctl.h>
41 #include <sys/vmmeter.h>
42 #include <dev/evdev/input.h>
43
44 #ifdef __amd64__
45 #include <sys/efi.h>
46 #include <machine/metadata.h>
47 #endif
48
49 #if defined(__amd64__) || defined(__i386__)
50 #include <machine/pc/bios.h>
51 #endif
52
53 #endif
54
55 #include <assert.h>
56 #include <ctype.h>
57 #include <err.h>
58 #include <errno.h>
59 #include <inttypes.h>
60 #include <locale.h>
61 #include <stdbool.h>
62 #include <stdio.h>
63 #include <stdlib.h>
64 #include <string.h>
65 #include <sysexits.h>
66 #include <unistd.h>
67
68 #ifdef FSTACK
69 #include <time.h>
70 #include <limits.h>
71
72 #include "sys/sysctl.h"
73 #include "ff_ipc.h"
74
75 struct clockinfo {
76 int hz; /* clock frequency */
77 int tick; /* micro-seconds per hz tick */
78 int spare;
79 int stathz; /* statistics clock frequency */
80 int profhz; /* profiling clock frequency */
81 };
82
83 struct loadavg {
84 __uint32_t ldavg[3];
85 long fscale;
86 };
87
88 /* Structure extended to include extended attribute field in ACPI 3.0. */
89 struct bios_smap_xattr {
90 u_int64_t base;
91 u_int64_t length;
92 u_int32_t type;
93 u_int32_t xattr;
94 } __packed;
95
96 /* systemwide totals computed every five seconds */
97 struct vmtotal {
98 int16_t t_rq; /* length of the run queue */
99 int16_t t_dw; /* jobs in ``disk wait'' (neg priority) */
100 int16_t t_pw; /* jobs in page wait */
101 int16_t t_sl; /* jobs sleeping in core */
102 int16_t t_sw; /* swapped out runnable/short block jobs */
103 int32_t t_vm; /* total virtual memory */
104 int32_t t_avm; /* active virtual memory */
105 int32_t t_rm; /* total real memory in use */
106 int32_t t_arm; /* active real memory */
107 int32_t t_vmshr; /* shared virtual memory */
108 int32_t t_avmshr; /* active shared virtual memory */
109 int32_t t_rmshr; /* shared real memory */
110 int32_t t_armshr; /* active shared real memory */
111 int32_t t_free; /* free memory pages */
112 };
113
114 struct efi_md {
115 uint32_t md_type;
116 #define EFI_MD_TYPE_NULL 0
117 #define EFI_MD_TYPE_CODE 1 /* Loader text. */
118 #define EFI_MD_TYPE_DATA 2 /* Loader data. */
119 #define EFI_MD_TYPE_BS_CODE 3 /* Boot services text. */
120 #define EFI_MD_TYPE_BS_DATA 4 /* Boot services data. */
121 #define EFI_MD_TYPE_RT_CODE 5 /* Runtime services text. */
122 #define EFI_MD_TYPE_RT_DATA 6 /* Runtime services data. */
123 #define EFI_MD_TYPE_FREE 7 /* Unused/free memory. */
124 #define EFI_MD_TYPE_BAD 8 /* Bad memory */
125 #define EFI_MD_TYPE_RECLAIM 9 /* ACPI reclaimable memory. */
126 #define EFI_MD_TYPE_FIRMWARE 10 /* ACPI NV memory */
127 #define EFI_MD_TYPE_IOMEM 11 /* Memory-mapped I/O. */
128 #define EFI_MD_TYPE_IOPORT 12 /* I/O port space. */
129 #define EFI_MD_TYPE_PALCODE 13 /* PAL */
130 #define EFI_MD_TYPE_PERSISTENT 14 /* Persistent memory. */
131 uint32_t __pad;
132 uint64_t md_phys;
133 void *md_virt;
134 uint64_t md_pages;
135 uint64_t md_attr;
136 #define EFI_MD_ATTR_UC 0x0000000000000001UL
137 #define EFI_MD_ATTR_WC 0x0000000000000002UL
138 #define EFI_MD_ATTR_WT 0x0000000000000004UL
139 #define EFI_MD_ATTR_WB 0x0000000000000008UL
140 #define EFI_MD_ATTR_UCE 0x0000000000000010UL
141 #define EFI_MD_ATTR_WP 0x0000000000001000UL
142 #define EFI_MD_ATTR_RP 0x0000000000002000UL
143 #define EFI_MD_ATTR_XP 0x0000000000004000UL
144 #define EFI_MD_ATTR_RT 0x8000000000000000UL
145 };
146
147 struct efi_map_header {
148 uint64_t memory_size;
149 uint64_t descriptor_size;
150 uint32_t descriptor_version;
151 };
152
153 struct input_id {
154 uint16_t bustype;
155 uint16_t vendor;
156 uint16_t product;
157 uint16_t version;
158 };
159
160 /*
161 * Top-level identifiers
162 */
163 #define CTL_SYSCTL 0 /* "magic" numbers */
164 #define CTL_KERN 1 /* "high kernel": proc, limits */
165 #define CTL_VM 2 /* virtual memory */
166 #define CTL_VFS 3 /* filesystem, mount type is next */
167 #define CTL_NET 4 /* network, see socket.h */
168 #define CTL_DEBUG 5 /* debugging parameters */
169 #define CTL_HW 6 /* generic cpu/io */
170 #define CTL_MACHDEP 7 /* machine dependent */
171 #define CTL_USER 8 /* user-level */
172 #define CTL_P1003_1B 9 /* POSIX 1003.1B */
173
174 /*
175 * CTL_SYSCTL identifiers
176 */
177 #define CTL_SYSCTL_DEBUG 0 /* printf all nodes */
178 #define CTL_SYSCTL_NAME 1 /* string name of OID */
179 #define CTL_SYSCTL_NEXT 2 /* next OID, honoring CTLFLAG_SKIP */
180 #define CTL_SYSCTL_NAME2OID 3 /* int array of name */
181 #define CTL_SYSCTL_OIDFMT 4 /* OID's kind and format */
182 #define CTL_SYSCTL_OIDDESCR 5 /* OID's description */
183 #define CTL_SYSCTL_OIDLABEL 6 /* aggregation label */
184 #define CTL_SYSCTL_NEXTNOSKIP 7 /* next OID, ignoring CTLFLAG_SKIP */
185
186 #endif
187
188 static const char *conffile;
189
190 static int aflag, bflag, Bflag, dflag, eflag, hflag, iflag;
191 static int Nflag, nflag, oflag, qflag, tflag, Tflag, Wflag, xflag;
192
193 static int oidfmt(int *, int, char *, u_int *);
194 static int parsefile(const char *);
195 static int parse(const char *, int);
196 static int show_var(int *, int, bool);
197 static int sysctl_all(int *, int);
198 static int name2oid(const char *, int *);
199
200 static int strIKtoi(const char *, char **, const char *);
201
202 static int ctl_sign[CTLTYPE+1] = {
203 [CTLTYPE_INT] = 1,
204 [CTLTYPE_LONG] = 1,
205 [CTLTYPE_S8] = 1,
206 [CTLTYPE_S16] = 1,
207 [CTLTYPE_S32] = 1,
208 [CTLTYPE_S64] = 1,
209 };
210
211 static int ctl_size[CTLTYPE+1] = {
212 [CTLTYPE_INT] = sizeof(int),
213 [CTLTYPE_UINT] = sizeof(u_int),
214 [CTLTYPE_LONG] = sizeof(long),
215 [CTLTYPE_ULONG] = sizeof(u_long),
216 [CTLTYPE_S8] = sizeof(int8_t),
217 [CTLTYPE_S16] = sizeof(int16_t),
218 [CTLTYPE_S32] = sizeof(int32_t),
219 [CTLTYPE_S64] = sizeof(int64_t),
220 [CTLTYPE_U8] = sizeof(uint8_t),
221 [CTLTYPE_U16] = sizeof(uint16_t),
222 [CTLTYPE_U32] = sizeof(uint32_t),
223 [CTLTYPE_U64] = sizeof(uint64_t),
224 };
225
226 static const char *ctl_typename[CTLTYPE+1] = {
227 [CTLTYPE_INT] = "integer",
228 [CTLTYPE_UINT] = "unsigned integer",
229 [CTLTYPE_LONG] = "long integer",
230 [CTLTYPE_ULONG] = "unsigned long",
231 [CTLTYPE_U8] = "uint8_t",
232 [CTLTYPE_U16] = "uint16_t",
233 [CTLTYPE_U32] = "uint32_t",
234 [CTLTYPE_U64] = "uint64_t",
235 [CTLTYPE_S8] = "int8_t",
236 [CTLTYPE_S16] = "int16_t",
237 [CTLTYPE_S32] = "int32_t",
238 [CTLTYPE_S64] = "int64_t",
239 [CTLTYPE_NODE] = "node",
240 [CTLTYPE_STRING] = "string",
241 [CTLTYPE_OPAQUE] = "opaque",
242 };
243
244 static void
usage(void)245 usage(void)
246 {
247 #ifndef FSTACK
248 (void)fprintf(stderr, "%s\n%s\n",
249 "usage: sysctl [-bdehiNnoqTtWx] [ -B <bufsize> ] [-f filename] name[=value] ...",
250 " sysctl [-bdehNnoqTtWx] [ -B <bufsize> ] -a");
251 #else
252 (void)fprintf(stderr, "%s\n%s\n",
253 "usage: sysctl -p <f-stack proc_id> [-bdehiNnoqTtWx] [ -B <bufsize> ] [-f filename] name[=value] ...",
254 " sysctl -p <f-stack proc_id> [-bdehNnoqTtWx] [ -B <bufsize> ] -a");
255 ff_ipc_exit();
256 #endif
257 exit(1);
258 }
259
260 int
main(int argc,char ** argv)261 main(int argc, char **argv)
262 {
263 int ch;
264 int warncount = 0;
265
266 #ifdef FSTACK
267 ff_ipc_init();
268 #endif
269
270 setlocale(LC_NUMERIC, "");
271 setbuf(stdout,0);
272 setbuf(stderr,0);
273
274 #ifndef FSTACK
275 while ((ch = getopt(argc, argv, "AabB:def:hiNnoqtTwWxX")) != -1) {
276 #else
277 while ((ch = getopt(argc, argv, "AabB:def:hiNnoqtTwWxXp:")) != -1) {
278 #endif
279 switch (ch) {
280 case 'A':
281 /* compatibility */
282 aflag = oflag = 1;
283 break;
284 case 'a':
285 aflag = 1;
286 break;
287 case 'b':
288 bflag = 1;
289 break;
290 case 'B':
291 Bflag = strtol(optarg, NULL, 0);
292 break;
293 case 'd':
294 dflag = 1;
295 break;
296 case 'e':
297 eflag = 1;
298 break;
299 case 'f':
300 conffile = optarg;
301 break;
302 case 'h':
303 hflag = 1;
304 break;
305 case 'i':
306 iflag = 1;
307 break;
308 case 'N':
309 Nflag = 1;
310 break;
311 case 'n':
312 nflag = 1;
313 break;
314 case 'o':
315 oflag = 1;
316 break;
317 case 'q':
318 qflag = 1;
319 break;
320 case 't':
321 tflag = 1;
322 break;
323 case 'T':
324 Tflag = 1;
325 break;
326 case 'w':
327 /* compatibility */
328 /* ignored */
329 break;
330 case 'W':
331 Wflag = 1;
332 break;
333 case 'X':
334 /* compatibility */
335 aflag = xflag = 1;
336 break;
337 case 'x':
338 xflag = 1;
339 break;
340 #ifdef FSTACK
341 case 'p':
342 ff_set_proc_id(atoi(optarg));
343 break;
344 #endif
345 default:
346 usage();
347 }
348 }
349 argc -= optind;
350 argv += optind;
351
352 if (Nflag && nflag)
353 usage();
354 if (aflag && argc == 0)
355 #ifndef FSTACK
356 exit(sysctl_all(NULL, 0));
357 #else
358 {
359 int ret = sysctl_all(0, 0);
360 ff_ipc_exit();
361 exit(ret);
362 }
363 #endif
364
365 if (argc == 0 && conffile == NULL)
366 usage();
367
368 warncount = 0;
369 if (conffile != NULL)
370 warncount += parsefile(conffile);
371
372 while (argc-- > 0)
373 warncount += parse(*argv++, 0);
374
375 #ifdef FSTACK
376 ff_ipc_exit();
377 #endif
378
379 return (warncount);
380 }
381
382 /*
383 * Parse a single numeric value, append it to 'newbuf', and update
384 * 'newsize'. Returns true if the value was parsed and false if the
385 * value was invalid. Non-numeric types (strings) are handled
386 * directly in parse().
387 */
388 static bool
389 parse_numeric(const char *newvalstr, const char *fmt, u_int kind,
390 void **newbufp, size_t *newsizep)
391 {
392 void *newbuf;
393 const void *newval;
394 int8_t i8val;
395 uint8_t u8val;
396 int16_t i16val;
397 uint16_t u16val;
398 int32_t i32val;
399 uint32_t u32val;
400 int intval;
401 unsigned int uintval;
402 long longval;
403 unsigned long ulongval;
404 int64_t i64val;
405 uint64_t u64val;
406 size_t valsize;
407 char *endptr = NULL;
408
409 errno = 0;
410
411 switch (kind & CTLTYPE) {
412 case CTLTYPE_INT:
413 if (strncmp(fmt, "IK", 2) == 0)
414 intval = strIKtoi(newvalstr, &endptr, fmt);
415 else
416 intval = (int)strtol(newvalstr, &endptr, 0);
417 newval = &intval;
418 valsize = sizeof(intval);
419 break;
420 case CTLTYPE_UINT:
421 uintval = (int) strtoul(newvalstr, &endptr, 0);
422 newval = &uintval;
423 valsize = sizeof(uintval);
424 break;
425 case CTLTYPE_LONG:
426 longval = strtol(newvalstr, &endptr, 0);
427 newval = &longval;
428 valsize = sizeof(longval);
429 break;
430 case CTLTYPE_ULONG:
431 ulongval = strtoul(newvalstr, &endptr, 0);
432 newval = &ulongval;
433 valsize = sizeof(ulongval);
434 break;
435 case CTLTYPE_S8:
436 i8val = (int8_t)strtol(newvalstr, &endptr, 0);
437 newval = &i8val;
438 valsize = sizeof(i8val);
439 break;
440 case CTLTYPE_S16:
441 i16val = (int16_t)strtol(newvalstr, &endptr, 0);
442 newval = &i16val;
443 valsize = sizeof(i16val);
444 break;
445 case CTLTYPE_S32:
446 i32val = (int32_t)strtol(newvalstr, &endptr, 0);
447 newval = &i32val;
448 valsize = sizeof(i32val);
449 break;
450 case CTLTYPE_S64:
451 i64val = strtoimax(newvalstr, &endptr, 0);
452 newval = &i64val;
453 valsize = sizeof(i64val);
454 break;
455 case CTLTYPE_U8:
456 u8val = (uint8_t)strtoul(newvalstr, &endptr, 0);
457 newval = &u8val;
458 valsize = sizeof(u8val);
459 break;
460 case CTLTYPE_U16:
461 u16val = (uint16_t)strtoul(newvalstr, &endptr, 0);
462 newval = &u16val;
463 valsize = sizeof(u16val);
464 break;
465 case CTLTYPE_U32:
466 u32val = (uint32_t)strtoul(newvalstr, &endptr, 0);
467 newval = &u32val;
468 valsize = sizeof(u32val);
469 break;
470 case CTLTYPE_U64:
471 u64val = strtoumax(newvalstr, &endptr, 0);
472 newval = &u64val;
473 valsize = sizeof(u64val);
474 break;
475 default:
476 /* NOTREACHED */
477 abort();
478 }
479
480 if (errno != 0 || endptr == newvalstr ||
481 (endptr != NULL && *endptr != '\0'))
482 return (false);
483
484 newbuf = realloc(*newbufp, *newsizep + valsize);
485 if (newbuf == NULL)
486 err(1, "out of memory");
487 memcpy((char *)newbuf + *newsizep, newval, valsize);
488 *newbufp = newbuf;
489 *newsizep += valsize;
490
491 return (true);
492 }
493
494 /*
495 * Parse a name into a MIB entry.
496 * Lookup and print out the MIB entry if it exists.
497 * Set a new value if requested.
498 */
499 static int
500 parse(const char *string, int lineno)
501 {
502 int len, i, j, save_errno;
503 const void *newval;
504 char *newvalstr = NULL;
505 void *newbuf;
506 size_t newsize = Bflag;
507 int mib[CTL_MAXNAME];
508 char *cp, *bufp, *buf, fmt[BUFSIZ], line[BUFSIZ];
509 u_int kind;
510
511 if (lineno)
512 snprintf(line, sizeof(line), " at line %d", lineno);
513 else
514 line[0] = '\0';
515
516 /*
517 * Split the string into name and value.
518 *
519 * Either = or : may be used as the delimiter.
520 * Whitespace surrounding the delimiter is trimmed.
521 * Quotes around the value are stripped.
522 */
523 cp = buf = strdup(string);
524 bufp = strsep(&cp, "=:");
525 if (cp != NULL) {
526 /* Tflag just lists tunables, do not allow assignment */
527 if (Tflag || Wflag) {
528 warnx("Can't set variables when using -T or -W");
529 usage();
530 }
531 /* Trim whitespace before the value. */
532 while (isspace(*cp))
533 cp++;
534 /* Strip a pair of " or ' if any. */
535 switch (*cp) {
536 case '\"':
537 case '\'':
538 if (cp[strlen(cp) - 1] == *cp)
539 cp[strlen(cp) - 1] = '\0';
540 cp++;
541 }
542 newvalstr = cp;
543 newsize = strlen(cp);
544 }
545 /* Trim whitespace after the name. */
546 cp = bufp + strlen(bufp) - 1;
547 while (cp >= bufp && isspace((int)*cp)) {
548 *cp = '\0';
549 cp--;
550 }
551
552 /*
553 * Check the name is a useable oid.
554 */
555 len = name2oid(bufp, mib);
556 if (len < 0) {
557 if (iflag) {
558 free(buf);
559 return (0);
560 }
561 if (!qflag) {
562 if (errno == ENOENT) {
563 warnx("unknown oid '%s'%s", bufp, line);
564 } else {
565 warn("unknown oid '%s'%s", bufp, line);
566 }
567 }
568 free(buf);
569 return (1);
570 }
571
572 if (oidfmt(mib, len, fmt, &kind)) {
573 warn("couldn't find format of oid '%s'%s", bufp, line);
574 free(buf);
575 if (iflag)
576 return (1);
577 else
578 #ifndef FSTACK
579 exit(1);
580 #else
581 {
582 ff_ipc_exit();
583 exit(1);
584 }
585 #endif
586 }
587
588 /*
589 * We have a useable oid to work with. If there is no value given,
590 * show the node and its children. Otherwise, set the new value.
591 */
592 if (newvalstr == NULL || dflag) {
593 free(buf);
594 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
595 if (dflag) {
596 i = show_var(mib, len, false);
597 if (!i && !bflag)
598 putchar('\n');
599 }
600 sysctl_all(mib, len);
601 } else {
602 i = show_var(mib, len, false);
603 if (!i && !bflag)
604 putchar('\n');
605 }
606 return (0);
607 }
608
609 /*
610 * We have a new value to set. Check its validity and parse if numeric.
611 */
612 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
613 warnx("oid '%s' isn't a leaf node%s", bufp, line);
614 free(buf);
615 return (1);
616 }
617
618 if (!(kind & CTLFLAG_WR)) {
619 if (kind & CTLFLAG_TUN) {
620 warnx("oid '%s' is a read only tunable%s", bufp, line);
621 warnx("Tunable values are set in /boot/loader.conf");
622 } else
623 warnx("oid '%s' is read only%s", bufp, line);
624 free(buf);
625 return (1);
626 }
627
628 switch (kind & CTLTYPE) {
629 case CTLTYPE_INT:
630 case CTLTYPE_UINT:
631 case CTLTYPE_LONG:
632 case CTLTYPE_ULONG:
633 case CTLTYPE_S8:
634 case CTLTYPE_S16:
635 case CTLTYPE_S32:
636 case CTLTYPE_S64:
637 case CTLTYPE_U8:
638 case CTLTYPE_U16:
639 case CTLTYPE_U32:
640 case CTLTYPE_U64:
641 if (strlen(newvalstr) == 0) {
642 warnx("empty numeric value");
643 free(buf);
644 return (1);
645 }
646 /* FALLTHROUGH */
647 case CTLTYPE_STRING:
648 break;
649 default:
650 warnx("oid '%s' is type %d, cannot set that%s",
651 bufp, kind & CTLTYPE, line);
652 free(buf);
653 return (1);
654 }
655
656 newbuf = NULL;
657
658 switch (kind & CTLTYPE) {
659 case CTLTYPE_STRING:
660 newval = newvalstr;
661 break;
662 default:
663 newsize = 0;
664 while ((cp = strsep(&newvalstr, " ,")) != NULL) {
665 if (*cp == '\0')
666 continue;
667 if (!parse_numeric(cp, fmt, kind, &newbuf, &newsize)) {
668 warnx("invalid %s '%s'%s",
669 ctl_typename[kind & CTLTYPE], cp, line);
670 free(newbuf);
671 free(buf);
672 return (1);
673 }
674 }
675 newval = newbuf;
676 break;
677 }
678
679 /*
680 * Show the current value, then set and show the new value.
681 */
682 i = show_var(mib, len, false);
683 if (sysctl(mib, len, 0, 0, newval, newsize) == -1) {
684 save_errno = errno;
685 free(newbuf);
686 free(buf);
687 if (!i && !bflag)
688 putchar('\n');
689 switch (save_errno) {
690 case EOPNOTSUPP:
691 warnx("%s: value is not available%s",
692 string, line);
693 return (1);
694 case ENOTDIR:
695 warnx("%s: specification is incomplete%s",
696 string, line);
697 return (1);
698 case ENOMEM:
699 warnx("%s: type is unknown to this program%s",
700 string, line);
701 return (1);
702 default:
703 #ifndef FSTACK
704 warnc(save_errno, "%s%s", string, line);
705 #else
706 warn("%s%s", string, line);
707 #endif
708 return (1);
709 }
710 }
711 free(newbuf);
712 free(buf);
713 if (!bflag)
714 printf(" -> ");
715 i = nflag;
716 nflag = 1;
717 j = show_var(mib, len, false);
718 if (!j && !bflag)
719 putchar('\n');
720 nflag = i;
721
722 return (0);
723 }
724
725 static int
726 parsefile(const char *filename)
727 {
728 FILE *file;
729 char line[BUFSIZ], *p, *pq, *pdq;
730 int warncount = 0, lineno = 0;
731
732 file = fopen(filename, "r");
733 if (file == NULL)
734 err(EX_NOINPUT, "%s", filename);
735 while (fgets(line, sizeof(line), file) != NULL) {
736 lineno++;
737 p = line;
738 pq = strchr(line, '\'');
739 pdq = strchr(line, '\"');
740 /* Replace the first # with \0. */
741 while((p = strchr(p, '#')) != NULL) {
742 if (pq != NULL && p > pq) {
743 if ((p = strchr(pq+1, '\'')) != NULL)
744 *(++p) = '\0';
745 break;
746 } else if (pdq != NULL && p > pdq) {
747 if ((p = strchr(pdq+1, '\"')) != NULL)
748 *(++p) = '\0';
749 break;
750 } else if (p == line || *(p-1) != '\\') {
751 *p = '\0';
752 break;
753 }
754 p++;
755 }
756 /* Trim spaces */
757 p = line + strlen(line) - 1;
758 while (p >= line && isspace((int)*p)) {
759 *p = '\0';
760 p--;
761 }
762 p = line;
763 while (isspace((int)*p))
764 p++;
765 if (*p == '\0')
766 continue;
767 else
768 warncount += parse(p, lineno);
769 }
770 fclose(file);
771
772 return (warncount);
773 }
774
775 /* These functions will dump out various interesting structures. */
776
777 static int
778 S_clockinfo(size_t l2, void *p)
779 {
780 struct clockinfo *ci = (struct clockinfo*)p;
781
782 if (l2 != sizeof(*ci)) {
783 warnx("S_clockinfo %zu != %zu", l2, sizeof(*ci));
784 return (1);
785 }
786 printf(hflag ? "{ hz = %'d, tick = %'d, profhz = %'d, stathz = %'d }" :
787 "{ hz = %d, tick = %d, profhz = %d, stathz = %d }",
788 ci->hz, ci->tick, ci->profhz, ci->stathz);
789 return (0);
790 }
791
792 static int
793 S_loadavg(size_t l2, void *p)
794 {
795 struct loadavg *tv = (struct loadavg*)p;
796
797 if (l2 != sizeof(*tv)) {
798 warnx("S_loadavg %zu != %zu", l2, sizeof(*tv));
799 return (1);
800 }
801 printf(hflag ? "{ %'.2f %'.2f %'.2f }" : "{ %.2f %.2f %.2f }",
802 (double)tv->ldavg[0]/(double)tv->fscale,
803 (double)tv->ldavg[1]/(double)tv->fscale,
804 (double)tv->ldavg[2]/(double)tv->fscale);
805 return (0);
806 }
807
808 static int
809 S_timeval(size_t l2, void *p)
810 {
811 struct timeval *tv = (struct timeval*)p;
812 time_t tv_sec;
813 char *p1, *p2;
814
815 if (l2 != sizeof(*tv)) {
816 warnx("S_timeval %zu != %zu", l2, sizeof(*tv));
817 return (1);
818 }
819 printf(hflag ? "{ sec = %'jd, usec = %'ld } " :
820 "{ sec = %jd, usec = %ld } ",
821 (intmax_t)tv->tv_sec, tv->tv_usec);
822 tv_sec = tv->tv_sec;
823 p1 = strdup(ctime(&tv_sec));
824 for (p2=p1; *p2 ; p2++)
825 if (*p2 == '\n')
826 *p2 = '\0';
827 fputs(p1, stdout);
828 free(p1);
829 return (0);
830 }
831
832 static int
833 S_vmtotal(size_t l2, void *p)
834 {
835 struct vmtotal *v;
836 int pageKilo;
837
838 if (l2 != sizeof(*v)) {
839 warnx("S_vmtotal %zu != %zu", l2, sizeof(*v));
840 return (1);
841 }
842
843 v = p;
844 pageKilo = getpagesize() / 1024;
845
846 #define pg2k(a) ((uintmax_t)(a) * pageKilo)
847 printf("\nSystem wide totals computed every five seconds:"
848 " (values in kilobytes)\n");
849 printf("===============================================\n");
850 printf("Processes:\t\t(RUNQ: %d Disk Wait: %d Page Wait: "
851 "%d Sleep: %d)\n",
852 v->t_rq, v->t_dw, v->t_pw, v->t_sl);
853 printf("Virtual Memory:\t\t(Total: %juK Active: %juK)\n",
854 pg2k(v->t_vm), pg2k(v->t_avm));
855 printf("Real Memory:\t\t(Total: %juK Active: %juK)\n",
856 pg2k(v->t_rm), pg2k(v->t_arm));
857 printf("Shared Virtual Memory:\t(Total: %juK Active: %juK)\n",
858 pg2k(v->t_vmshr), pg2k(v->t_avmshr));
859 printf("Shared Real Memory:\t(Total: %juK Active: %juK)\n",
860 pg2k(v->t_rmshr), pg2k(v->t_armshr));
861 printf("Free Memory:\t%juK", pg2k(v->t_free));
862 return (0);
863 }
864
865 static int
866 S_input_id(size_t l2, void *p)
867 {
868 struct input_id *id = p;
869
870 if (l2 != sizeof(*id)) {
871 warnx("S_input_id %zu != %zu", l2, sizeof(*id));
872 return (1);
873 }
874
875 printf("{ bustype = 0x%04x, vendor = 0x%04x, "
876 "product = 0x%04x, version = 0x%04x }",
877 id->bustype, id->vendor, id->product, id->version);
878 return (0);
879 }
880
881 static int
882 S_pagesizes(size_t l2, void *p)
883 {
884 char buf[256];
885 u_long *ps;
886 size_t l;
887 int i;
888
889 l = snprintf(buf, sizeof(buf), "{ ");
890 ps = p;
891 for (i = 0; i * sizeof(*ps) < l2 && ps[i] != 0 && l < sizeof(buf);
892 i++) {
893 l += snprintf(&buf[l], sizeof(buf) - l,
894 "%s%lu", i == 0 ? "" : ", ", ps[i]);
895 }
896 if (l < sizeof(buf))
897 (void)snprintf(&buf[l], sizeof(buf) - l, " }");
898
899 printf("%s", buf);
900
901 return (0);
902 }
903
904 #ifdef __amd64__
905 #ifdef FSTACK
906 #define efi_next_descriptor(ptr, size) \
907 ((struct efi_md *)(((uint8_t *)(ptr)) + (size)))
908 #endif
909
910 static int
911 S_efi_map(size_t l2, void *p)
912 {
913 struct efi_map_header *efihdr;
914 struct efi_md *map;
915 const char *type;
916 size_t efisz;
917 int ndesc, i;
918
919 static const char * const types[] = {
920 [EFI_MD_TYPE_NULL] = "Reserved",
921 [EFI_MD_TYPE_CODE] = "LoaderCode",
922 [EFI_MD_TYPE_DATA] = "LoaderData",
923 [EFI_MD_TYPE_BS_CODE] = "BootServicesCode",
924 [EFI_MD_TYPE_BS_DATA] = "BootServicesData",
925 [EFI_MD_TYPE_RT_CODE] = "RuntimeServicesCode",
926 [EFI_MD_TYPE_RT_DATA] = "RuntimeServicesData",
927 [EFI_MD_TYPE_FREE] = "ConventionalMemory",
928 [EFI_MD_TYPE_BAD] = "UnusableMemory",
929 [EFI_MD_TYPE_RECLAIM] = "ACPIReclaimMemory",
930 [EFI_MD_TYPE_FIRMWARE] = "ACPIMemoryNVS",
931 [EFI_MD_TYPE_IOMEM] = "MemoryMappedIO",
932 [EFI_MD_TYPE_IOPORT] = "MemoryMappedIOPortSpace",
933 [EFI_MD_TYPE_PALCODE] = "PalCode",
934 [EFI_MD_TYPE_PERSISTENT] = "PersistentMemory",
935 };
936
937 /*
938 * Memory map data provided by UEFI via the GetMemoryMap
939 * Boot Services API.
940 */
941 if (l2 < sizeof(*efihdr)) {
942 warnx("S_efi_map length less than header");
943 return (1);
944 }
945 efihdr = p;
946 efisz = (sizeof(struct efi_map_header) + 0xf) & ~0xf;
947 map = (struct efi_md *)((uint8_t *)efihdr + efisz);
948
949 if (efihdr->descriptor_size == 0)
950 return (0);
951 if (l2 != efisz + efihdr->memory_size) {
952 warnx("S_efi_map length mismatch %zu vs %zu", l2, efisz +
953 efihdr->memory_size);
954 return (1);
955 }
956 ndesc = efihdr->memory_size / efihdr->descriptor_size;
957
958 printf("\n%23s %12s %12s %8s %4s",
959 "Type", "Physical", "Virtual", "#Pages", "Attr");
960
961 for (i = 0; i < ndesc; i++,
962 map = efi_next_descriptor(map, efihdr->descriptor_size)) {
963 type = NULL;
964 if (map->md_type < nitems(types))
965 type = types[map->md_type];
966 if (type == NULL)
967 type = "<INVALID>";
968 printf("\n%23s %012jx %12p %08jx ", type,
969 (uintmax_t)map->md_phys, map->md_virt,
970 (uintmax_t)map->md_pages);
971 if (map->md_attr & EFI_MD_ATTR_UC)
972 printf("UC ");
973 if (map->md_attr & EFI_MD_ATTR_WC)
974 printf("WC ");
975 if (map->md_attr & EFI_MD_ATTR_WT)
976 printf("WT ");
977 if (map->md_attr & EFI_MD_ATTR_WB)
978 printf("WB ");
979 if (map->md_attr & EFI_MD_ATTR_UCE)
980 printf("UCE ");
981 if (map->md_attr & EFI_MD_ATTR_WP)
982 printf("WP ");
983 if (map->md_attr & EFI_MD_ATTR_RP)
984 printf("RP ");
985 if (map->md_attr & EFI_MD_ATTR_XP)
986 printf("XP ");
987 if (map->md_attr & EFI_MD_ATTR_RT)
988 printf("RUNTIME");
989 }
990 return (0);
991 }
992 #endif
993
994 #if defined(__amd64__) || defined(__i386__)
995 static int
996 S_bios_smap_xattr(size_t l2, void *p)
997 {
998 struct bios_smap_xattr *smap, *end;
999
1000 if (l2 % sizeof(*smap) != 0) {
1001 warnx("S_bios_smap_xattr %zu is not a multiple of %zu", l2,
1002 sizeof(*smap));
1003 return (1);
1004 }
1005
1006 end = (struct bios_smap_xattr *)((char *)p + l2);
1007 for (smap = p; smap < end; smap++)
1008 printf("\nSMAP type=%02x, xattr=%02x, base=%016jx, len=%016jx",
1009 smap->type, smap->xattr, (uintmax_t)smap->base,
1010 (uintmax_t)smap->length);
1011 return (0);
1012 }
1013 #endif
1014
1015 static int
1016 strIKtoi(const char *str, char **endptrp, const char *fmt)
1017 {
1018 int kelv;
1019 float temp;
1020 size_t len;
1021 const char *p;
1022 int prec, i;
1023
1024 assert(errno == 0);
1025
1026 len = strlen(str);
1027 /* caller already checked this */
1028 assert(len > 0);
1029
1030 /*
1031 * A format of "IK" is in deciKelvin. A format of "IK3" is in
1032 * milliKelvin. The single digit following IK is log10 of the
1033 * multiplying factor to convert Kelvin into the untis of this sysctl,
1034 * or the dividing factor to convert the sysctl value to Kelvin. Numbers
1035 * larger than 6 will run into precision issues with 32-bit integers.
1036 * Characters that aren't ASCII digits after the 'K' are ignored. No
1037 * localization is present because this is an interface from the kernel
1038 * to this program (eg not an end-user interface), so isdigit() isn't
1039 * used here.
1040 */
1041 if (fmt[2] != '\0' && fmt[2] >= '0' && fmt[2] <= '9')
1042 prec = fmt[2] - '0';
1043 else
1044 prec = 1;
1045 p = &str[len - 1];
1046 if (*p == 'C' || *p == 'F' || *p == 'K') {
1047 temp = strtof(str, endptrp);
1048 if (*endptrp != str && *endptrp == p && errno == 0) {
1049 if (*p == 'F')
1050 temp = (temp - 32) * 5 / 9;
1051 *endptrp = NULL;
1052 if (*p != 'K')
1053 temp += 273.15;
1054 for (i = 0; i < prec; i++)
1055 temp *= 10.0;
1056 return ((int)(temp + 0.5));
1057 }
1058 } else {
1059 /* No unit specified -> treat it as a raw number */
1060 kelv = (int)strtol(str, endptrp, 10);
1061 if (*endptrp != str && *endptrp == p && errno == 0) {
1062 *endptrp = NULL;
1063 return (kelv);
1064 }
1065 }
1066
1067 errno = ERANGE;
1068 return (0);
1069 }
1070
1071 /*
1072 * These functions uses a presently undocumented interface to the kernel
1073 * to walk the tree and get the type so it can print the value.
1074 * This interface is under work and consideration, and should probably
1075 * be killed with a big axe by the first person who can find the time.
1076 * (be aware though, that the proper interface isn't as obvious as it
1077 * may seem, there are various conflicting requirements.
1078 */
1079
1080 static int
1081 name2oid(const char *name, int *oidp)
1082 {
1083 int oid[2];
1084 int i;
1085 size_t j;
1086
1087 oid[0] = CTL_SYSCTL;
1088 oid[1] = CTL_SYSCTL_NAME2OID;
1089
1090 j = CTL_MAXNAME * sizeof(int);
1091 i = sysctl(oid, 2, oidp, &j, name, strlen(name));
1092 if (i < 0)
1093 return (i);
1094 j /= sizeof(int);
1095 return (j);
1096 }
1097
1098 static int
1099 oidfmt(int *oid, int len, char *fmt, u_int *kind)
1100 {
1101 int qoid[CTL_MAXNAME+2];
1102 u_char buf[BUFSIZ];
1103 int i;
1104 size_t j;
1105
1106 qoid[0] = CTL_SYSCTL;
1107 qoid[1] = CTL_SYSCTL_OIDFMT;
1108 memcpy(qoid + 2, oid, len * sizeof(int));
1109
1110 j = sizeof(buf);
1111 i = sysctl(qoid, len + 2, buf, &j, 0, 0);
1112 if (i)
1113 err(1, "sysctl fmt %d %zu %d", i, j, errno);
1114
1115 if (kind)
1116 *kind = *(u_int *)buf;
1117
1118 if (fmt)
1119 strcpy(fmt, (char *)(buf + sizeof(u_int)));
1120 return (0);
1121 }
1122
1123 /*
1124 * This formats and outputs the value of one variable
1125 *
1126 * Returns zero if anything was actually output.
1127 * Returns one if didn't know what to do with this.
1128 * Return minus one if we had errors.
1129 */
1130 static int
1131 show_var(int *oid, int nlen, bool honor_skip)
1132 {
1133 static int skip_len = 0, skip_oid[CTL_MAXNAME];
1134 u_char buf[BUFSIZ], *val, *oval, *p;
1135 char name[BUFSIZ], fmt[BUFSIZ];
1136 const char *sep, *sep1, *prntype;
1137 int qoid[CTL_MAXNAME+2];
1138 uintmax_t umv;
1139 intmax_t mv;
1140 int i, hexlen, sign, ctltype;
1141 size_t intlen;
1142 size_t j, len;
1143 u_int kind;
1144 float base;
1145 int (*func)(size_t, void *);
1146 int prec;
1147
1148 /* Silence GCC. */
1149 umv = mv = intlen = 0;
1150
1151 bzero(buf, BUFSIZ);
1152 bzero(fmt, BUFSIZ);
1153 bzero(name, BUFSIZ);
1154 qoid[0] = CTL_SYSCTL;
1155 memcpy(qoid + 2, oid, nlen * sizeof(int));
1156
1157 qoid[1] = CTL_SYSCTL_NAME;
1158 j = sizeof(name);
1159 i = sysctl(qoid, nlen + 2, name, &j, 0, 0);
1160 if (i || !j)
1161 err(1, "sysctl name %d %zu %d", i, j, errno);
1162
1163 oidfmt(oid, nlen, fmt, &kind);
1164 /* if Wflag then only list sysctls that are writeable and not stats. */
1165 if (Wflag && ((kind & CTLFLAG_WR) == 0 || (kind & CTLFLAG_STATS) != 0))
1166 return (1);
1167
1168 /* if Tflag then only list sysctls that are tuneables. */
1169 if (Tflag && (kind & CTLFLAG_TUN) == 0)
1170 return (1);
1171
1172 if (Nflag) {
1173 printf("%s", name);
1174 return (0);
1175 }
1176
1177 if (eflag)
1178 sep = "=";
1179 else
1180 sep = ": ";
1181
1182 ctltype = (kind & CTLTYPE);
1183 if (tflag || dflag) {
1184 if (!nflag)
1185 printf("%s%s", name, sep);
1186 if (ctl_typename[ctltype] != NULL)
1187 prntype = ctl_typename[ctltype];
1188 else
1189 prntype = "unknown";
1190 if (tflag && dflag)
1191 printf("%s%s", prntype, sep);
1192 else if (tflag) {
1193 printf("%s", prntype);
1194 return (0);
1195 }
1196 qoid[1] = CTL_SYSCTL_OIDDESCR;
1197 j = sizeof(buf);
1198 i = sysctl(qoid, nlen + 2, buf, &j, 0, 0);
1199 printf("%s", buf);
1200 return (0);
1201 }
1202
1203 /* keep track of encountered skip nodes, ignoring descendants */
1204 if ((skip_len == 0 || skip_len >= nlen * (int)sizeof(int)) &&
1205 (kind & CTLFLAG_SKIP) != 0) {
1206 /* Save this oid so we can skip descendants. */
1207 skip_len = nlen * sizeof(int);
1208 memcpy(skip_oid, oid, skip_len);
1209 }
1210
1211 /* bail before fetching the value if we're honoring skip */
1212 if (honor_skip) {
1213 if (0 < skip_len && skip_len <= nlen * (int)sizeof(int) &&
1214 memcmp(skip_oid, oid, skip_len) == 0)
1215 return (1);
1216 /* Not a skip node or descendant of a skip node. */
1217 skip_len = 0;
1218 }
1219
1220 /* don't fetch opaques that we don't know how to print */
1221 if (ctltype == CTLTYPE_OPAQUE) {
1222 if (strcmp(fmt, "S,clockinfo") == 0)
1223 func = S_clockinfo;
1224 else if (strcmp(fmt, "S,timeval") == 0)
1225 func = S_timeval;
1226 else if (strcmp(fmt, "S,loadavg") == 0)
1227 func = S_loadavg;
1228 else if (strcmp(fmt, "S,vmtotal") == 0)
1229 func = S_vmtotal;
1230 else if (strcmp(fmt, "S,input_id") == 0)
1231 func = S_input_id;
1232 else if (strcmp(fmt, "S,pagesizes") == 0)
1233 func = S_pagesizes;
1234 #ifdef __amd64__
1235 else if (strcmp(fmt, "S,efi_map_header") == 0)
1236 func = S_efi_map;
1237 #endif
1238 #if defined(__amd64__) || defined(__i386__)
1239 else if (strcmp(fmt, "S,bios_smap_xattr") == 0)
1240 func = S_bios_smap_xattr;
1241 #endif
1242 else {
1243 func = NULL;
1244 if (!bflag && !oflag && !xflag)
1245 return (1);
1246 }
1247 }
1248
1249 /* find an estimate of how much we need for this var */
1250 if (Bflag)
1251 j = Bflag;
1252 else {
1253 j = 0;
1254 i = sysctl(oid, nlen, 0, &j, 0, 0);
1255 j += j; /* we want to be sure :-) */
1256 }
1257
1258 val = oval = malloc(j + 1);
1259 if (val == NULL) {
1260 warnx("malloc failed");
1261 return (1);
1262 }
1263 len = j;
1264 i = sysctl(oid, nlen, val, &len, 0, 0);
1265 if (i != 0 || (len == 0 && ctltype != CTLTYPE_STRING)) {
1266 free(oval);
1267 return (1);
1268 }
1269
1270 if (bflag) {
1271 fwrite(val, 1, len, stdout);
1272 free(oval);
1273 return (0);
1274 }
1275 val[len] = '\0';
1276 p = val;
1277 sign = ctl_sign[ctltype];
1278 intlen = ctl_size[ctltype];
1279
1280 switch (ctltype) {
1281 case CTLTYPE_STRING:
1282 if (!nflag)
1283 printf("%s%s", name, sep);
1284 printf("%.*s", (int)len, p);
1285 free(oval);
1286 return (0);
1287
1288 case CTLTYPE_INT:
1289 case CTLTYPE_UINT:
1290 case CTLTYPE_LONG:
1291 case CTLTYPE_ULONG:
1292 case CTLTYPE_S8:
1293 case CTLTYPE_S16:
1294 case CTLTYPE_S32:
1295 case CTLTYPE_S64:
1296 case CTLTYPE_U8:
1297 case CTLTYPE_U16:
1298 case CTLTYPE_U32:
1299 case CTLTYPE_U64:
1300 if (!nflag)
1301 printf("%s%s", name, sep);
1302 hexlen = 2 + (intlen * CHAR_BIT + 3) / 4;
1303 sep1 = "";
1304 while (len >= intlen) {
1305 switch (kind & CTLTYPE) {
1306 case CTLTYPE_INT:
1307 case CTLTYPE_UINT:
1308 umv = *(u_int *)p;
1309 mv = *(int *)p;
1310 break;
1311 case CTLTYPE_LONG:
1312 case CTLTYPE_ULONG:
1313 umv = *(u_long *)p;
1314 mv = *(long *)p;
1315 break;
1316 case CTLTYPE_S8:
1317 case CTLTYPE_U8:
1318 umv = *(uint8_t *)p;
1319 mv = *(int8_t *)p;
1320 break;
1321 case CTLTYPE_S16:
1322 case CTLTYPE_U16:
1323 umv = *(uint16_t *)p;
1324 mv = *(int16_t *)p;
1325 break;
1326 case CTLTYPE_S32:
1327 case CTLTYPE_U32:
1328 umv = *(uint32_t *)p;
1329 mv = *(int32_t *)p;
1330 break;
1331 case CTLTYPE_S64:
1332 case CTLTYPE_U64:
1333 umv = *(uint64_t *)p;
1334 mv = *(int64_t *)p;
1335 break;
1336 }
1337 fputs(sep1, stdout);
1338 if (xflag)
1339 printf("%#0*jx", hexlen, umv);
1340 else if (!sign)
1341 printf(hflag ? "%'ju" : "%ju", umv);
1342 else if (fmt[1] == 'K') {
1343 if (mv < 0)
1344 printf("%jd", mv);
1345 else {
1346 /*
1347 * See strIKtoi for details on fmt.
1348 */
1349 prec = 1;
1350 if (fmt[2] != '\0')
1351 prec = fmt[2] - '0';
1352 base = 1.0;
1353 for (int i = 0; i < prec; i++)
1354 base *= 10.0;
1355 printf("%.*fC", prec,
1356 (float)mv / base - 273.15);
1357 }
1358 } else
1359 printf(hflag ? "%'jd" : "%jd", mv);
1360 sep1 = " ";
1361 len -= intlen;
1362 p += intlen;
1363 }
1364 free(oval);
1365 return (0);
1366
1367 case CTLTYPE_OPAQUE:
1368 i = 0;
1369 if (func) {
1370 if (!nflag)
1371 printf("%s%s", name, sep);
1372 i = (*func)(len, p);
1373 free(oval);
1374 return (i);
1375 }
1376 /* FALLTHROUGH */
1377 default:
1378 if (!oflag && !xflag) {
1379 free(oval);
1380 return (1);
1381 }
1382 if (!nflag)
1383 printf("%s%s", name, sep);
1384 printf("Format:%s Length:%zu Dump:0x", fmt, len);
1385 while (len-- && (xflag || p < val + 16))
1386 printf("%02x", *p++);
1387 if (!xflag && len > 16)
1388 printf("...");
1389 free(oval);
1390 return (0);
1391 }
1392 free(oval);
1393 return (1);
1394 }
1395
1396 static int
1397 sysctl_all(int *oid, int len)
1398 {
1399 int name1[22], name2[22];
1400 int i, j;
1401 size_t l1, l2;
1402
1403 name1[0] = CTL_SYSCTL;
1404 name1[1] = (oid != NULL || Nflag || dflag || tflag) ?
1405 CTL_SYSCTL_NEXTNOSKIP : CTL_SYSCTL_NEXT;
1406 l1 = 2;
1407 if (len) {
1408 memcpy(name1 + 2, oid, len * sizeof(int));
1409 l1 += len;
1410 } else {
1411 name1[2] = CTL_KERN;
1412 l1++;
1413 }
1414 for (;;) {
1415 l2 = sizeof(name2);
1416 j = sysctl(name1, l1, name2, &l2, 0, 0);
1417 if (j < 0) {
1418 if (errno == ENOENT)
1419 return (0);
1420 else
1421 err(1, "sysctl(getnext) %d %zu", j, l2);
1422 }
1423
1424 l2 /= sizeof(int);
1425
1426 if (len < 0 || l2 < (unsigned int)len)
1427 return (0);
1428
1429 if (memcmp(name2, oid, len * sizeof(int)) != 0)
1430 return (0);
1431
1432 i = show_var(name2, l2, true);
1433 if (!i && !bflag)
1434 putchar('\n');
1435
1436 memcpy(name1 + 2, name2, l2 * sizeof(int));
1437 l1 = 2 + l2;
1438 }
1439 }
1440