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29 * @(#) Copyright (c) 1993 The Regents of the University of California. All rights reserved.
30 * @(#)from: sysctl.c 8.1 (Berkeley) 6/6/93
31 * $FreeBSD: src/sbin/sysctl/sysctl.c,v 1.25.2.11 2003/05/01 22:48:08 trhodes Exp $
34 #include <sys/types.h>
36 #include <sys/sysctl.h>
37 #include <sys/resource.h>
38 #include <sys/sensors.h>
39 #include <sys/param.h>
43 #include <machine/metadata.h>
46 #include <machine/inttypes.h>
56 static int aflag, bflag, dflag, eflag, Nflag, nflag, oflag, xflag;
57 static int iflag, qflag;
59 static int oidfmt(int *, size_t, char *, u_int *);
60 static int parse(const char *);
61 static int show_var(int *, size_t);
62 static int sysctl_all(int *, size_t);
63 static void set_T_dev_t(const char *, void **, size_t *);
64 static int set_IK(const char *, int *);
70 fprintf(stderr, "%s\n%s\n",
71 "usage: sysctl [-bdeNnox] variable[=value] ...",
72 " sysctl [-bdeNnox] -a");
77 main(int argc, char **argv)
85 while ((ch = getopt(argc, argv, "AabdeiNnoqwxX")) != -1) {
138 if (aflag && argc == 0)
139 exit(sysctl_all(0, 0));
144 warncount += parse(*argv++);
150 * Parse a name into a MIB entry.
151 * Lookup and print out the MIB entry if it exists.
152 * Set a new value if requested.
155 parse(const char *string)
161 unsigned int uintval;
163 unsigned long ulongval;
167 int mib[CTL_MAXNAME];
168 char *cp, fmt[BUFSIZ];
170 char *name_allocated = NULL;
173 if ((cp = strchr(string, '=')) != NULL) {
174 if ((name_allocated = malloc(cp - string + 1)) == NULL)
175 err(1, "malloc failed");
176 strlcpy(name_allocated, string, cp - string + 1);
177 name = name_allocated;
179 while (isspace(*++cp))
183 newsize = strlen(cp);
189 if (sysctlnametomib(name, mib, &len) < 0) {
194 if (errno == ENOENT) {
195 errx(1, "unknown oid '%s'", name);
197 err(1, "sysctlnametomib(\"%s\")", name);
201 if (oidfmt(mib, len, fmt, &kind)) {
202 warn("couldn't find format of oid '%s'", name);
208 if (newval == NULL) {
209 if ((kind & CTLTYPE) == CTLTYPE_NODE) {
210 sysctl_all(mib, len);
212 i = show_var(mib, len);
217 if ((kind & CTLTYPE) == CTLTYPE_NODE)
218 errx(1, "oid '%s' isn't a leaf node", name);
220 if (!(kind&CTLFLAG_WR))
221 errx(1, "oid '%s' is read only", name);
223 switch (kind & CTLTYPE) {
225 if (!(strcmp(fmt, "IK") == 0)) {
226 if (!set_IK(newval, &intval))
227 errx(1, "invalid value '%s'",
230 intval = (int) strtol(newval, NULL, 0);
232 newsize = sizeof(intval);
235 uintval = (int) strtoul(newval, NULL, 0);
237 newsize = sizeof uintval;
240 longval = strtol(newval, NULL, 0);
242 newsize = sizeof longval;
245 ulongval = strtoul(newval, NULL, 0);
247 newsize = sizeof ulongval;
252 quadval = strtoq(newval, NULL, 0);
254 newsize = sizeof(quadval);
257 uquadval = strtouq(newval, NULL, 0);
259 newsize = sizeof(uquadval);
262 if (strcmp(fmt, "T,dev_t") == 0 ||
263 strcmp(fmt, "T,udev_t") == 0
265 set_T_dev_t((char*)newval, &newval,
271 errx(1, "oid '%s' is type %d,"
272 " cannot set that", name,
276 i = show_var(mib, len);
277 if (sysctl(mib, len, 0, 0, newval, newsize) == -1) {
282 errx(1, "%s: value is not available",
285 errx(1, "%s: specification is incomplete",
288 errx(1, "%s: type is unknown to this program",
299 j = show_var(mib, len);
305 if (name_allocated != NULL)
306 free(name_allocated);
311 /* These functions will dump out various interesting structures. */
314 S_clockinfo(size_t l2, void *p)
316 struct clockinfo *ci = (struct clockinfo*)p;
317 if (l2 != sizeof(*ci))
318 err(1, "S_clockinfo %zu != %zu", l2, sizeof(*ci));
319 printf("{ hz = %d, tick = %d, tickadj = %d, profhz = %d, stathz = %d }",
320 ci->hz, ci->tick, ci->tickadj, ci->profhz, ci->stathz);
325 S_loadavg(size_t l2, void *p)
327 struct loadavg *tv = (struct loadavg*)p;
329 if (l2 != sizeof(*tv))
330 err(1, "S_loadavg %zu != %zu", l2, sizeof(*tv));
332 printf("{ %.2f %.2f %.2f }",
333 (double)tv->ldavg[0]/(double)tv->fscale,
334 (double)tv->ldavg[1]/(double)tv->fscale,
335 (double)tv->ldavg[2]/(double)tv->fscale);
340 S_timespec(size_t l2, void *p)
342 struct timespec *ts = (struct timespec*)p;
346 if (l2 != sizeof(*ts))
347 err(1, "S_timespec %zu != %zu", l2, sizeof(*ts));
348 printf("{ sec = %ld, nsec = %ld } ",
349 ts->tv_sec, ts->tv_nsec);
351 p1 = strdup(ctime(&tv_sec));
352 for (p2=p1; *p2 ; p2++)
360 S_timeval(size_t l2, void *p)
362 struct timeval *tv = (struct timeval*)p;
366 if (l2 != sizeof(*tv))
367 err(1, "S_timeval %zu != %zu", l2, sizeof(*tv));
368 printf("{ sec = %ld, usec = %ld } ",
369 tv->tv_sec, tv->tv_usec);
371 p1 = strdup(ctime(&tv_sec));
372 for (p2=p1; *p2 ; p2++)
380 S_sensor(size_t l2, void *p)
382 struct sensor *s = (struct sensor *)p;
384 if (l2 != sizeof(*s)) {
385 warnx("S_sensor %zu != %zu", l2, sizeof(*s));
389 if (s->flags & SENSOR_FINVALID) {
391 * XXX: with this flag, the node should be entirely ignored,
392 * but as the magic-based sysctl(8) is not too flexible, we
393 * simply have to print out that the sensor is invalid.
399 if (s->flags & SENSOR_FUNKNOWN)
405 (s->value - 273150000) / 1000000.0);
408 printf("%jd RPM", (intmax_t)s->value);
410 case SENSOR_VOLTS_DC:
411 printf("%.2f VDC", s->value / 1000000.0);
414 printf("%.2f W", s->value / 1000000.0);
417 printf("%.2f A", s->value / 1000000.0);
419 case SENSOR_WATTHOUR:
420 printf("%.2f Wh", s->value / 1000000.0);
423 printf("%.2f Ah", s->value / 1000000.0);
425 case SENSOR_INDICATOR:
426 printf("%s", s->value ? "On" : "Off");
429 printf("%jd Hz", (intmax_t)s->value);
433 printf("%jd", (intmax_t)s->value);
436 printf("%.2f%%", s->value / 1000.0);
439 printf("%.2f lx", s->value / 1000000.0);
446 case SENSOR_DRIVE_EMPTY:
449 case SENSOR_DRIVE_READY:
452 case SENSOR_DRIVE_POWERUP:
453 name = "powering up";
455 case SENSOR_DRIVE_ONLINE:
458 case SENSOR_DRIVE_IDLE:
461 case SENSOR_DRIVE_ACTIVE:
464 case SENSOR_DRIVE_REBUILD:
467 case SENSOR_DRIVE_POWERDOWN:
468 name = "powering down";
470 case SENSOR_DRIVE_FAIL:
473 case SENSOR_DRIVE_PFAIL:
483 case SENSOR_TIMEDELTA:
484 printf("%.6f secs", s->value / 1000000000.0);
491 if (s->desc[0] != '\0')
492 printf(" (%s)", s->desc);
495 case SENSOR_S_UNSPEC:
504 printf(", CRITICAL");
506 case SENSOR_S_UNKNOWN:
512 time_t t = s->tv.tv_sec;
517 printf(", %s.%03ld", ct, s->tv.tv_usec / 1000);
525 S_efi_map(size_t l2, void *p)
527 struct efi_map_header *efihdr;
533 static const char *types[] = {
539 "RuntimeServicesCode",
540 "RuntimeServicesData",
541 "ConventionalMemory",
546 "MemoryMappedIOPortSpace",
551 * Memory map data provided by UEFI via the GetMemoryMap
554 if (l2 < sizeof(*efihdr)) {
555 warnx("S_efi_map length less than header");
559 efisz = (sizeof(struct efi_map_header) + 0xf) & ~0xf;
560 map = (struct efi_md *)((uint8_t *)efihdr + efisz);
562 if (efihdr->descriptor_size == 0)
564 if (l2 != efisz + efihdr->memory_size) {
565 warnx("S_efi_map length mismatch %zu vs %zu", l2, efisz +
566 efihdr->memory_size);
569 ndesc = efihdr->memory_size / efihdr->descriptor_size;
571 printf("\n%23s %12s %12s %8s %4s",
572 "Type", "Physical", "Virtual", "#Pages", "Attr");
574 for (i = 0; i < ndesc; i++,
575 map = efi_next_descriptor(map, efihdr->descriptor_size)) {
576 if (map->md_type <= EFI_MD_TYPE_PALCODE)
577 type = types[map->md_type];
580 printf("\n%23s %012lx %12p %08lx ", type, map->md_phys,
581 map->md_virt, map->md_pages);
582 if (map->md_attr & EFI_MD_ATTR_UC)
584 if (map->md_attr & EFI_MD_ATTR_WC)
586 if (map->md_attr & EFI_MD_ATTR_WT)
588 if (map->md_attr & EFI_MD_ATTR_WB)
590 if (map->md_attr & EFI_MD_ATTR_UCE)
592 if (map->md_attr & EFI_MD_ATTR_WP)
594 if (map->md_attr & EFI_MD_ATTR_RP)
596 if (map->md_attr & EFI_MD_ATTR_XP)
598 if (map->md_attr & EFI_MD_ATTR_RT)
606 T_dev_t(size_t l2, void *p)
608 dev_t *d = (dev_t *)p;
609 if (l2 != sizeof(*d))
610 err(1, "T_dev_T %zu != %zu", l2, sizeof(*d));
611 if ((int)(*d) != -1) {
612 if (minor(*d) > 255 || minor(*d) < 0)
613 printf("{ major = %d, minor = 0x%x }",
614 major(*d), minor(*d));
616 printf("{ major = %d, minor = %d }",
617 major(*d), minor(*d));
623 set_T_dev_t(const char *path, void **val, size_t *size)
625 static struct stat statb;
627 if (strcmp(path, "none") && strcmp(path, "off")) {
628 int rc = stat (path, &statb);
630 err(1, "cannot stat %s", path);
633 if (!S_ISCHR(statb.st_mode)) {
634 errx(1, "must specify a device special file.");
637 statb.st_rdev = NODEV;
639 *val = (char*) &statb.st_rdev;
640 *size = sizeof statb.st_rdev;
644 set_IK(const char *str, int *val)
651 if ((len = strlen(str)) == 0)
654 if (*p == 'C' || *p == 'F') {
655 temp = strtof(str, &endptr);
656 if (endptr == str || endptr != p)
659 temp = (temp - 32) * 5 / 9;
660 kelv = temp * 10 + 2732;
663 * I would like to just use, 0 but it would make numbers
664 * like '023' which were interpreted as decimal before
665 * suddenly interpreted as octal.
667 if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
668 kelv = (int)strtol(str, &endptr, 0);
670 kelv = (int)strtol(str, &endptr, 10);
671 if (endptr == str || *endptr != '\0')
679 * These functions uses a presently undocumented interface to the kernel
680 * to walk the tree and get the type so it can print the value.
681 * This interface is under work and consideration, and should probably
682 * be killed with a big axe by the first person who can find the time.
683 * (be aware though, that the proper interface isn't as obvious as it
684 * may seem, there are various conflicting requirements.
688 oidfmt(int *oid, size_t len, char *fmt, u_int *kind)
690 int qoid[CTL_MAXNAME+2];
697 memcpy(qoid + 2, oid, len * sizeof(int));
700 i = sysctl(qoid, len + 2, buf, &j, 0, 0);
702 err(1, "sysctl fmt %d %zu %d", i, j, errno);
705 *kind = *(u_int *)buf;
708 strcpy(fmt, (char *)(buf + sizeof(u_int)));
713 * This formats and outputs the value of one variable
715 * Returns zero if anything was actually output.
716 * Returns one if didn't know what to do with this.
717 * Return minus one if we had errors.
721 show_var(int *oid, size_t nlen)
723 u_char buf[BUFSIZ], *val = NULL, *p, *nul;
724 char name[BUFSIZ], *fmt;
725 const char *sep, *spacer;
726 int qoid[CTL_MAXNAME+2];
730 int (*func)(size_t, void *);
734 memcpy(qoid + 2, oid, nlen * sizeof(int));
738 i = sysctl(qoid, nlen + 2, name, &j, 0, 0);
740 err(1, "sysctl name %d %zu %d", i, j, errno);
752 if (dflag) { /* just print description */
755 i = sysctl(qoid, nlen + 2, buf, &j, 0, 0);
757 printf("%s%s", name, sep);
761 /* find an estimate of how much we need for this var */
763 i = sysctl(oid, nlen, 0, &j, 0, 0);
764 j += j; /* we want to be sure :-) */
771 i = sysctl(oid, nlen, val, &len, 0, 0);
778 fwrite(val, 1, len, stdout);
784 oidfmt(oid, nlen, fmt, &kind);
789 printf("%s%s", name, sep);
790 nul = memchr(p, '\0', len);
791 fwrite(p, nul == NULL ? (int)len : nul - p, 1, stdout);
796 printf("%s%s", name, sep);
799 while (len >= sizeof(int)) {
801 printf("%s%u", spacer, *(unsigned int *)p);
802 else if (*fmt == 'K' && *(int *)p >= 0)
803 printf("%s%.1fC", spacer, (*(int *)p - 2732) / 10.0);
805 printf("%s%d", spacer, *(int *)p);
814 printf("%s%s", name, sep);
817 while (len >= sizeof(long)) {
819 printf("%s%lu", spacer, *(unsigned long *)p);
821 printf("%s%ld", spacer, *(long *)p);
830 printf("%s%s", name, sep);
831 printf("%p", *(void **)p);
836 printf("%s%s", name, sep);
839 while (len >= sizeof(quad_t)) {
842 spacer, (uintmax_t)*(u_quad_t *)p);
845 spacer, (intmax_t)*(quad_t *)p);
848 len -= sizeof(int64_t);
849 p += sizeof(int64_t);
855 if (!oflag && !xflag) {
857 if (strcmp(fmt, "S,clockinfo") == 0)
859 else if (strcmp(fmt, "S,timespec") == 0)
861 else if (strcmp(fmt, "S,timeval") == 0)
863 else if (strcmp(fmt, "S,loadavg") == 0)
865 else if (strcmp(fmt, "S,sensor") == 0)
868 else if (strcmp(fmt, "S,efi_map_header") == 0)
871 else if (strcmp(fmt, "T,dev_t") == 0)
873 else if (strcmp(fmt, "T,udev_t") == 0)
879 printf("%s%s", name, sep);
880 error = (*func)(len, p);
886 if (!oflag && !xflag) {
891 printf("%s%s", name, sep);
892 printf("Format:%s Length:%zu Dump:0x", fmt, len);
893 while (len-- && (xflag || p < val + 16))
894 printf("%02x", *p++);
895 if (!xflag && len > 16)
907 sysctl_all(int *oid, size_t len)
909 int name1[22], name2[22];
917 memcpy(name1+2, oid, len * sizeof(int));
925 retval = sysctl(name1, l1, name2, &l2, 0, 0);
930 err(1, "sysctl(getnext) %d %zu", retval, l2);
938 for (i = 0; i < len; i++)
939 if (name2[i] != oid[i])
942 retval = show_var(name2, l2);
943 if (retval == 0 && !bflag)
946 memcpy(name1+2, name2, l2 * sizeof(int));