3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 $
35 #include <sys/diskslice.h> /* used for bootdev parsing */
36 #include <sys/reboot.h> /* used for bootdev parsing */
38 #include <sys/types.h>
40 #include <sys/sysctl.h>
41 #include <sys/resource.h>
42 #include <sys/sensors.h>
43 #include <sys/param.h>
45 #include <machine/inttypes.h>
55 static int aflag
, bflag
, dflag
, eflag
, Nflag
, nflag
, oflag
, xflag
;
57 static int oidfmt(int *, size_t, char *, u_int
*);
58 static void parse(const char *);
59 static int show_var(int *, size_t);
60 static int sysctl_all(int *, size_t);
61 static void set_T_dev_t(const char *, void **, size_t *);
62 static int set_IK(const char *, int *);
68 fprintf(stderr
, "%s\n%s\n",
69 "usage: sysctl [-bdeNnox] variable[=value] ...",
70 " sysctl [-bdeNnox] -a");
75 main(int argc
, char **argv
)
81 while ((ch
= getopt(argc
, argv
, "AabdeNnowxX")) != -1) {
128 if (aflag
&& argc
== 0)
129 exit(sysctl_all(0, 0));
138 * Parse a name into a MIB entry.
139 * Lookup and print out the MIB entry if it exists.
140 * Set a new value if requested.
143 parse(const char *string
)
149 unsigned int uintval
;
151 unsigned long ulongval
;
155 int mib
[CTL_MAXNAME
];
156 char *cp
, fmt
[BUFSIZ
];
158 char *name_allocated
= NULL
;
161 if ((cp
= strchr(string
, '=')) != NULL
) {
162 if ((name_allocated
= malloc(cp
- string
+ 1)) == NULL
)
163 err(1, "malloc failed");
164 strlcpy(name_allocated
, string
, cp
- string
+ 1);
165 name
= name_allocated
;
167 while (isspace(*++cp
))
171 newsize
= strlen(cp
);
177 if (sysctlnametomib(name
, mib
, &len
) < 0) {
178 if (errno
== ENOENT
) {
179 errx(1, "unknown oid '%s'", name
);
181 err(1, "sysctlnametomib(\"%s\")", name
);
185 if (oidfmt(mib
, len
, fmt
, &kind
))
186 err(1, "couldn't find format of oid '%s'", name
);
188 if (newval
== NULL
) {
189 if ((kind
& CTLTYPE
) == CTLTYPE_NODE
) {
190 sysctl_all(mib
, len
);
192 i
= show_var(mib
, len
);
197 if ((kind
& CTLTYPE
) == CTLTYPE_NODE
)
198 errx(1, "oid '%s' isn't a leaf node", name
);
200 if (!(kind
&CTLFLAG_WR
))
201 errx(1, "oid '%s' is read only", name
);
203 switch (kind
& CTLTYPE
) {
205 if (!strcmp(fmt
, "IK") == 0) {
206 if (!set_IK(newval
, &intval
))
207 errx(1, "invalid value '%s'",
210 intval
= (int) strtol(newval
, NULL
, 0);
212 newsize
= sizeof(intval
);
215 uintval
= (int) strtoul(newval
, NULL
, 0);
217 newsize
= sizeof uintval
;
220 longval
= strtol(newval
, NULL
, 0);
222 newsize
= sizeof longval
;
225 ulongval
= strtoul(newval
, NULL
, 0);
227 newsize
= sizeof ulongval
;
232 quadval
= strtoq(newval
, NULL
, 0);
234 newsize
= sizeof(quadval
);
237 uquadval
= strtouq(newval
, NULL
, 0);
239 newsize
= sizeof(uquadval
);
242 if (strcmp(fmt
, "T,dev_t") == 0 ||
243 strcmp(fmt
, "T,udev_t") == 0
245 set_T_dev_t((char*)newval
, &newval
,
251 errx(1, "oid '%s' is type %d,"
252 " cannot set that", name
,
256 i
= show_var(mib
, len
);
257 if (sysctl(mib
, len
, 0, 0, newval
, newsize
) == -1) {
262 errx(1, "%s: value is not available",
265 errx(1, "%s: specification is incomplete",
268 errx(1, "%s: type is unknown to this program",
279 j
= show_var(mib
, len
);
285 if (name_allocated
!= NULL
)
286 free(name_allocated
);
289 /* These functions will dump out various interesting structures. */
292 S_clockinfo(int l2
, void *p
)
294 struct clockinfo
*ci
= (struct clockinfo
*)p
;
295 if (l2
!= sizeof(*ci
))
296 err(1, "S_clockinfo %d != %zu", l2
, sizeof(*ci
));
297 printf("{ hz = %d, tick = %d, tickadj = %d, profhz = %d, stathz = %d }",
298 ci
->hz
, ci
->tick
, ci
->tickadj
, ci
->profhz
, ci
->stathz
);
303 S_loadavg(int l2
, void *p
)
305 struct loadavg
*tv
= (struct loadavg
*)p
;
307 if (l2
!= sizeof(*tv
))
308 err(1, "S_loadavg %d != %zu", l2
, sizeof(*tv
));
310 printf("{ %.2f %.2f %.2f }",
311 (double)tv
->ldavg
[0]/(double)tv
->fscale
,
312 (double)tv
->ldavg
[1]/(double)tv
->fscale
,
313 (double)tv
->ldavg
[2]/(double)tv
->fscale
);
318 S_timespec(int l2
, void *p
)
320 struct timespec
*ts
= (struct timespec
*)p
;
324 if (l2
!= sizeof(*ts
))
325 err(1, "S_timespec %d != %zu", l2
, sizeof(*ts
));
326 printf("{ sec = %ld, nsec = %ld } ",
327 ts
->tv_sec
, ts
->tv_nsec
);
329 p1
= strdup(ctime(&tv_sec
));
330 for (p2
=p1
; *p2
; p2
++)
338 S_timeval(int l2
, void *p
)
340 struct timeval
*tv
= (struct timeval
*)p
;
344 if (l2
!= sizeof(*tv
))
345 err(1, "S_timeval %d != %zu", l2
, sizeof(*tv
));
346 printf("{ sec = %ld, usec = %ld } ",
347 tv
->tv_sec
, tv
->tv_usec
);
349 p1
= strdup(ctime(&tv_sec
));
350 for (p2
=p1
; *p2
; p2
++)
358 S_sensor(int l2
, void *p
)
360 struct sensor
*s
= (struct sensor
*)p
;
362 if (l2
!= sizeof(*s
)) {
363 warnx("S_sensor %d != %zu", l2
, sizeof(*s
));
367 if (s
->flags
& SENSOR_FINVALID
) {
369 * XXX: with this flag, the node should be entirely ignored,
370 * but as the magic-based sysctl(8) is not too flexible, we
371 * simply have to print out that the sensor is invalid.
377 if (s
->flags
& SENSOR_FUNKNOWN
)
383 (s
->value
- 273150000) / 1000000.0);
386 printf("%jd RPM", (intmax_t)s
->value
);
388 case SENSOR_VOLTS_DC
:
389 printf("%.2f VDC", s
->value
/ 1000000.0);
392 printf("%.2f A", s
->value
/ 1000000.0);
394 case SENSOR_WATTHOUR
:
395 printf("%.2f Wh", s
->value
/ 1000000.0);
398 printf("%.2f Ah", s
->value
/ 1000000.0);
400 case SENSOR_INDICATOR
:
401 printf("%s", s
->value
? "On" : "Off");
404 printf("%jd", (intmax_t)s
->value
);
407 printf("%.2f%%", s
->value
/ 1000.0);
410 printf("%.2f lx", s
->value
/ 1000000.0);
417 case SENSOR_DRIVE_EMPTY
:
420 case SENSOR_DRIVE_READY
:
423 case SENSOR_DRIVE_POWERUP
:
424 name
= "powering up";
426 case SENSOR_DRIVE_ONLINE
:
429 case SENSOR_DRIVE_IDLE
:
432 case SENSOR_DRIVE_ACTIVE
:
435 case SENSOR_DRIVE_REBUILD
:
438 case SENSOR_DRIVE_POWERDOWN
:
439 name
= "powering down";
441 case SENSOR_DRIVE_FAIL
:
444 case SENSOR_DRIVE_PFAIL
:
454 case SENSOR_TIMEDELTA
:
455 printf("%.6f secs", s
->value
/ 1000000000.0);
462 if (s
->desc
[0] != '\0')
463 printf(" (%s)", s
->desc
);
466 case SENSOR_S_UNSPEC
:
475 printf(", CRITICAL");
477 case SENSOR_S_UNKNOWN
:
483 time_t t
= s
->tv
.tv_sec
;
488 printf(", %s.%03ld", ct
, s
->tv
.tv_usec
/ 1000);
495 T_dev_t(int l2
, void *p
)
497 dev_t
*d
= (dev_t
*)p
;
498 if (l2
!= sizeof(*d
))
499 err(1, "T_dev_T %d != %zu", l2
, sizeof(*d
));
500 if ((int)(*d
) != -1) {
501 if (minor(*d
) > 255 || minor(*d
) < 0)
502 printf("{ major = %d, minor = 0x%x }",
503 major(*d
), minor(*d
));
505 printf("{ major = %d, minor = %d }",
506 major(*d
), minor(*d
));
512 set_T_dev_t(const char *path
, void **val
, size_t *size
)
514 static struct stat statb
;
516 if (strcmp(path
, "none") && strcmp(path
, "off")) {
517 int rc
= stat (path
, &statb
);
519 err(1, "cannot stat %s", path
);
522 if (!S_ISCHR(statb
.st_mode
)) {
523 errx(1, "must specify a device special file.");
526 statb
.st_rdev
= NODEV
;
528 *val
= (char*) &statb
.st_rdev
;
529 *size
= sizeof statb
.st_rdev
;
533 set_IK(const char *str
, int *val
)
540 if ((len
= strlen(str
)) == 0)
543 if (*p
== 'C' || *p
== 'F') {
544 temp
= strtof(str
, &endptr
);
545 if (endptr
== str
|| endptr
!= p
)
548 temp
= (temp
- 32) * 5 / 9;
549 kelv
= temp
* 10 + 2732;
552 * I would like to just use, 0 but it would make numbers
553 * like '023' which were interpreted as decimal before
554 * suddenly interpreted as octal.
556 if (str
[0] == '0' && (str
[1] == 'x' || str
[1] == 'X'))
557 kelv
= (int)strtol(str
, &endptr
, 0);
559 kelv
= (int)strtol(str
, &endptr
, 10);
560 if (endptr
== str
|| *endptr
!= '\0')
568 * These functions uses a presently undocumented interface to the kernel
569 * to walk the tree and get the type so it can print the value.
570 * This interface is under work and consideration, and should probably
571 * be killed with a big axe by the first person who can find the time.
572 * (be aware though, that the proper interface isn't as obvious as it
573 * may seem, there are various conflicting requirements.
577 oidfmt(int *oid
, size_t len
, char *fmt
, u_int
*kind
)
579 int qoid
[CTL_MAXNAME
+2];
586 memcpy(qoid
+ 2, oid
, len
* sizeof(int));
589 i
= sysctl(qoid
, len
+ 2, buf
, &j
, 0, 0);
591 err(1, "sysctl fmt %d %zu %d", i
, j
, errno
);
594 *kind
= *(u_int
*)buf
;
597 strcpy(fmt
, (char *)(buf
+ sizeof(u_int
)));
603 * Code to map a bootdev major number into a suitable device name.
604 * Major numbers are mapped into names as in boot2.c
615 { -1, NULL
} /* terminator */
619 machdep_bootdev(u_long value
)
621 int majdev
, unit
, slice
, part
;
624 if ((value
& B_MAGICMASK
) != B_DEVMAGIC
) {
625 printf("invalid (0x%08lx)", value
);
628 majdev
= B_TYPE(value
);
629 unit
= B_UNIT(value
);
630 slice
= B_SLICE(value
);
631 part
= B_PARTITION(value
);
632 if (majdev
== 2) { /* floppy, as known to the boot block... */
633 printf("/dev/fd%d", unit
);
636 for (p
= maj2name
; p
->name
!= NULL
&& p
->majdev
!= majdev
; p
++) ;
637 if (p
->name
!= NULL
) { /* found */
638 if (slice
== WHOLE_DISK_SLICE
)
639 printf("/dev/%s%d%c", p
->name
, unit
, part
);
641 printf("/dev/%s%ds%d%c",
642 p
->name
, unit
, slice
- BASE_SLICE
+ 1, part
+ 'a');
644 printf("unknown (major %d unit %d slice %d part %d)",
645 majdev
, unit
, slice
, part
);
651 * This formats and outputs the value of one variable
653 * Returns zero if anything was actually output.
654 * Returns one if didn't know what to do with this.
655 * Return minus one if we had errors.
659 show_var(int *oid
, size_t nlen
)
661 u_char buf
[BUFSIZ
], *val
= NULL
, *p
, *nul
;
662 char name
[BUFSIZ
], *fmt
;
663 const char *sep
, *spacer
;
664 int qoid
[CTL_MAXNAME
+2];
668 int (*func
)(int, void *);
672 memcpy(qoid
+ 2, oid
, nlen
* sizeof(int));
676 i
= sysctl(qoid
, nlen
+ 2, name
, &j
, 0, 0);
678 err(1, "sysctl name %d %zu %d", i
, j
, errno
);
690 if (dflag
) { /* just print description */
693 i
= sysctl(qoid
, nlen
+ 2, buf
, &j
, 0, 0);
695 printf("%s%s", name
, sep
);
699 /* find an estimate of how much we need for this var */
701 i
= sysctl(oid
, nlen
, 0, &j
, 0, 0);
702 j
+= j
; /* we want to be sure :-) */
709 i
= sysctl(oid
, nlen
, val
, &len
, 0, 0);
716 fwrite(val
, 1, len
, stdout
);
722 oidfmt(oid
, nlen
, fmt
, &kind
);
727 printf("%s%s", name
, sep
);
728 nul
= memchr(p
, '\0', len
);
729 fwrite(p
, nul
== NULL
? (int)len
: nul
- p
, 1, stdout
);
734 printf("%s%s", name
, sep
);
737 while (len
>= sizeof(int)) {
739 printf("%s%u", spacer
, *(unsigned int *)p
);
740 else if (*fmt
== 'K' && *(int *)p
>= 0)
741 printf("%s%.1fC", spacer
, (*(int *)p
- 2732) / 10.0);
743 printf("%s%d", spacer
, *(int *)p
);
752 printf("%s%s", name
, sep
);
755 if (!strcmp(name
, "machdep.guessed_bootdev"))
756 return machdep_bootdev(*(unsigned long *)p
);
759 while (len
>= sizeof(long)) {
761 printf("%s%lu", spacer
, *(unsigned long *)p
);
763 printf("%s%ld", spacer
, *(long *)p
);
772 printf("%s%s", name
, sep
);
773 printf("%p", *(void **)p
);
778 printf("%s%s", name
, sep
);
781 while (len
>= sizeof(quad_t
)) {
784 spacer
, (uintmax_t)*(u_quad_t
*)p
);
787 spacer
, (intmax_t)*(quad_t
*)p
);
790 len
-= sizeof(int64_t);
791 p
+= sizeof(int64_t);
797 if (!oflag
&& !xflag
) {
799 if (strcmp(fmt
, "S,clockinfo") == 0)
801 else if (strcmp(fmt
, "S,timespec") == 0)
803 else if (strcmp(fmt
, "S,timeval") == 0)
805 else if (strcmp(fmt
, "S,loadavg") == 0)
807 else if (strcmp(fmt
, "S,sensor") == 0)
809 else if (strcmp(fmt
, "T,dev_t") == 0)
811 else if (strcmp(fmt
, "T,udev_t") == 0)
817 printf("%s%s", name
, sep
);
818 error
= (*func
)(len
, p
);
824 if (!oflag
&& !xflag
) {
829 printf("%s%s", name
, sep
);
830 printf("Format:%s Length:%zu Dump:0x", fmt
, len
);
831 while (len
-- && (xflag
|| p
< val
+ 16))
832 printf("%02x", *p
++);
833 if (!xflag
&& len
> 16)
845 sysctl_all(int *oid
, size_t len
)
847 int name1
[22], name2
[22];
855 memcpy(name1
+2, oid
, len
* sizeof(int));
863 retval
= sysctl(name1
, l1
, name2
, &l2
, 0, 0);
868 err(1, "sysctl(getnext) %d %zu", retval
, l2
);
876 for (i
= 0; i
< len
; i
++)
877 if (name2
[i
] != oid
[i
])
880 retval
= show_var(name2
, l2
);
881 if (retval
== 0 && !bflag
)
884 memcpy(name1
+2, name2
, l2
* sizeof(int));