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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1993 The Regents of the University of California. All rights reserved.
34 * @(#)from: sysctl.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/sbin/sysctl/sysctl.c,v 1.25.2.11 2003/05/01 22:48:08 trhodes Exp $
36 * $DragonFly: src/sbin/sysctl/sysctl.c,v 1.16 2007/10/02 12:57:00 hasso Exp $
40 #include <sys/diskslice.h> /* used for bootdev parsing */
41 #include <sys/reboot.h> /* used for bootdev parsing */
43 #include <sys/types.h>
45 #include <sys/sysctl.h>
46 #include <sys/resource.h>
47 #include <sys/sensors.h>
48 #include <sys/param.h>
50 #include <machine/inttypes.h>
60 static int aflag
, bflag
, dflag
, eflag
, Nflag
, nflag
, oflag
, xflag
;
62 static int oidfmt(int *, size_t, char *, u_int
*);
63 static void parse(const char *);
64 static int show_var(int *, size_t);
65 static int sysctl_all(int *, size_t);
66 static void set_T_dev_t(const char *, void **, size_t *);
67 static int set_IK(const char *, int *);
73 fprintf(stderr
, "%s\n%s\n",
74 "usage: sysctl [-bdeNnox] variable[=value] ...",
75 " sysctl [-bdeNnox] -a");
80 main(int argc
, char **argv
)
86 while ((ch
= getopt(argc
, argv
, "AabdeNnowxX")) != -1) {
133 if (aflag
&& argc
== 0)
134 exit(sysctl_all(0, 0));
143 * Parse a name into a MIB entry.
144 * Lookup and print out the MIB entry if it exists.
145 * Set a new value if requested.
148 parse(const char *string
)
154 unsigned int uintval
;
156 unsigned long ulongval
;
160 int mib
[CTL_MAXNAME
];
161 char *cp
, fmt
[BUFSIZ
];
163 char *name_allocated
= NULL
;
166 if ((cp
= strchr(string
, '=')) != NULL
) {
167 if ((name_allocated
= malloc(cp
- string
+ 1)) == NULL
)
168 err(1, "malloc failed");
169 strlcpy(name_allocated
, string
, cp
- string
+ 1);
170 name
= name_allocated
;
172 while (isspace(*++cp
))
176 newsize
= strlen(cp
);
182 if (sysctlnametomib(name
, mib
, &len
) < 0) {
183 if (errno
== ENOENT
) {
184 errx(1, "unknown oid '%s'", name
);
186 err(1, "sysctlnametomib(\"%s\")", name
);
190 if (oidfmt(mib
, len
, fmt
, &kind
))
191 err(1, "couldn't find format of oid '%s'", name
);
193 if (newval
== NULL
) {
194 if ((kind
& CTLTYPE
) == CTLTYPE_NODE
) {
195 sysctl_all(mib
, len
);
197 i
= show_var(mib
, len
);
202 if ((kind
& CTLTYPE
) == CTLTYPE_NODE
)
203 errx(1, "oid '%s' isn't a leaf node", name
);
205 if (!(kind
&CTLFLAG_WR
))
206 errx(1, "oid '%s' is read only", name
);
208 switch (kind
& CTLTYPE
) {
210 if (!strcmp(fmt
, "IK") == 0) {
211 if (!set_IK(newval
, &intval
))
212 errx(1, "invalid value '%s'",
215 intval
= (int) strtol(newval
, NULL
, 0);
217 newsize
= sizeof(intval
);
220 uintval
= (int) strtoul(newval
, NULL
, 0);
222 newsize
= sizeof uintval
;
225 longval
= strtol(newval
, NULL
, 0);
227 newsize
= sizeof longval
;
230 ulongval
= strtoul(newval
, NULL
, 0);
232 newsize
= sizeof ulongval
;
237 quadval
= strtoq(newval
, NULL
, 0);
239 newsize
= sizeof(quadval
);
242 uquadval
= strtouq(newval
, NULL
, 0);
244 newsize
= sizeof(quadval
);
247 if (strcmp(fmt
, "T,dev_t") == 0 ||
248 strcmp(fmt
, "T,udev_t") == 0
250 set_T_dev_t((char*)newval
, &newval
,
256 errx(1, "oid '%s' is type %d,"
257 " cannot set that", name
,
261 i
= show_var(mib
, len
);
262 if (sysctl(mib
, len
, 0, 0, newval
, newsize
) == -1) {
267 errx(1, "%s: value is not available",
270 errx(1, "%s: specification is incomplete",
273 errx(1, "%s: type is unknown to this program",
284 j
= show_var(mib
, len
);
290 if (name_allocated
!= NULL
)
291 free(name_allocated
);
294 /* These functions will dump out various interesting structures. */
297 S_clockinfo(int l2
, void *p
)
299 struct clockinfo
*ci
= (struct clockinfo
*)p
;
300 if (l2
!= sizeof(*ci
))
301 err(1, "S_clockinfo %d != %zu", l2
, sizeof(*ci
));
302 printf("{ hz = %d, tick = %d, tickadj = %d, profhz = %d, stathz = %d }",
303 ci
->hz
, ci
->tick
, ci
->tickadj
, ci
->profhz
, ci
->stathz
);
308 S_loadavg(int l2
, void *p
)
310 struct loadavg
*tv
= (struct loadavg
*)p
;
312 if (l2
!= sizeof(*tv
))
313 err(1, "S_loadavg %d != %zu", l2
, sizeof(*tv
));
315 printf("{ %.2f %.2f %.2f }",
316 (double)tv
->ldavg
[0]/(double)tv
->fscale
,
317 (double)tv
->ldavg
[1]/(double)tv
->fscale
,
318 (double)tv
->ldavg
[2]/(double)tv
->fscale
);
323 S_timespec(int l2
, void *p
)
325 struct timespec
*ts
= (struct timespec
*)p
;
329 if (l2
!= sizeof(*ts
))
330 err(1, "S_timespec %d != %zu", l2
, sizeof(*ts
));
331 printf("{ sec = %ld, nsec = %ld } ",
332 ts
->tv_sec
, ts
->tv_nsec
);
334 p1
= strdup(ctime(&tv_sec
));
335 for (p2
=p1
; *p2
; p2
++)
343 S_timeval(int l2
, void *p
)
345 struct timeval
*tv
= (struct timeval
*)p
;
349 if (l2
!= sizeof(*tv
))
350 err(1, "S_timeval %d != %zu", l2
, sizeof(*tv
));
351 printf("{ sec = %ld, usec = %ld } ",
352 tv
->tv_sec
, tv
->tv_usec
);
354 p1
= strdup(ctime(&tv_sec
));
355 for (p2
=p1
; *p2
; p2
++)
363 S_sensor(int l2
, void *p
)
365 struct sensor
*s
= (struct sensor
*)p
;
367 if (l2
!= sizeof(*s
)) {
368 warnx("S_sensor %d != %zu", l2
, sizeof(*s
));
372 if (s
->flags
& SENSOR_FINVALID
) {
374 * XXX: with this flag, the node should be entirely ignored,
375 * but as the magic-based sysctl(8) is not too flexible, we
376 * simply have to print out that the sensor is invalid.
382 if (s
->flags
& SENSOR_FUNKNOWN
)
388 (s
->value
- 273150000) / 1000000.0);
391 printf("%jd RPM", (intmax_t)s
->value
);
393 case SENSOR_VOLTS_DC
:
394 printf("%.2f VDC", s
->value
/ 1000000.0);
397 printf("%.2f A", s
->value
/ 1000000.0);
399 case SENSOR_WATTHOUR
:
400 printf("%.2f Wh", s
->value
/ 1000000.0);
403 printf("%.2f Ah", s
->value
/ 1000000.0);
405 case SENSOR_INDICATOR
:
406 printf("%s", s
->value
? "On" : "Off");
409 printf("%jd", (intmax_t)s
->value
);
412 printf("%.2f%%", s
->value
/ 1000.0);
415 printf("%.2f lx", s
->value
/ 1000000.0);
422 case SENSOR_DRIVE_EMPTY
:
425 case SENSOR_DRIVE_READY
:
428 case SENSOR_DRIVE_POWERUP
:
429 name
= "powering up";
431 case SENSOR_DRIVE_ONLINE
:
434 case SENSOR_DRIVE_IDLE
:
437 case SENSOR_DRIVE_ACTIVE
:
440 case SENSOR_DRIVE_REBUILD
:
443 case SENSOR_DRIVE_POWERDOWN
:
444 name
= "powering down";
446 case SENSOR_DRIVE_FAIL
:
449 case SENSOR_DRIVE_PFAIL
:
459 case SENSOR_TIMEDELTA
:
460 printf("%.6f secs", s
->value
/ 1000000000.0);
467 if (s
->desc
[0] != '\0')
468 printf(" (%s)", s
->desc
);
471 case SENSOR_S_UNSPEC
:
480 printf(", CRITICAL");
482 case SENSOR_S_UNKNOWN
:
488 time_t t
= s
->tv
.tv_sec
;
493 printf(", %s.%03ld", ct
, s
->tv
.tv_usec
/ 1000);
500 T_dev_t(int l2
, void *p
)
502 dev_t
*d
= (dev_t
*)p
;
503 if (l2
!= sizeof(*d
))
504 err(1, "T_dev_T %d != %zu", l2
, sizeof(*d
));
505 if ((int)(*d
) != -1) {
506 if (minor(*d
) > 255 || minor(*d
) < 0)
507 printf("{ major = %d, minor = 0x%x }",
508 major(*d
), minor(*d
));
510 printf("{ major = %d, minor = %d }",
511 major(*d
), minor(*d
));
517 set_T_dev_t(const char *path
, void **val
, size_t *size
)
519 static struct stat statb
;
521 if (strcmp(path
, "none") && strcmp(path
, "off")) {
522 int rc
= stat (path
, &statb
);
524 err(1, "cannot stat %s", path
);
527 if (!S_ISCHR(statb
.st_mode
)) {
528 errx(1, "must specify a device special file.");
531 statb
.st_rdev
= NODEV
;
533 *val
= (char*) &statb
.st_rdev
;
534 *size
= sizeof statb
.st_rdev
;
538 set_IK(const char *str
, int *val
)
545 if ((len
= strlen(str
)) == 0)
548 if (*p
== 'C' || *p
== 'F') {
549 temp
= strtof(str
, &endptr
);
550 if (endptr
== str
|| endptr
!= p
)
553 temp
= (temp
- 32) * 5 / 9;
554 kelv
= temp
* 10 + 2732;
556 kelv
= (int)strtol(str
, &endptr
, 10);
557 if (endptr
== str
|| *endptr
!= '\0')
565 * These functions uses a presently undocumented interface to the kernel
566 * to walk the tree and get the type so it can print the value.
567 * This interface is under work and consideration, and should probably
568 * be killed with a big axe by the first person who can find the time.
569 * (be aware though, that the proper interface isn't as obvious as it
570 * may seem, there are various conflicting requirements.
574 oidfmt(int *oid
, size_t len
, char *fmt
, u_int
*kind
)
576 int qoid
[CTL_MAXNAME
+2];
583 memcpy(qoid
+ 2, oid
, len
* sizeof(int));
586 i
= sysctl(qoid
, len
+ 2, buf
, &j
, 0, 0);
588 err(1, "sysctl fmt %d %zu %d", i
, j
, errno
);
591 *kind
= *(u_int
*)buf
;
594 strcpy(fmt
, (char *)(buf
+ sizeof(u_int
)));
600 * Code to map a bootdev major number into a suitable device name.
601 * Major numbers are mapped into names as in boot2.c
612 { -1, NULL
} /* terminator */
616 machdep_bootdev(u_long value
)
618 int majdev
, unit
, slice
, part
;
621 if ((value
& B_MAGICMASK
) != B_DEVMAGIC
) {
622 printf("invalid (0x%08lx)", value
);
625 majdev
= B_TYPE(value
);
626 unit
= B_UNIT(value
);
627 slice
= B_SLICE(value
);
628 part
= B_PARTITION(value
);
629 if (majdev
== 2) { /* floppy, as known to the boot block... */
630 printf("/dev/fd%d", unit
);
633 for (p
= maj2name
; p
->name
!= NULL
&& p
->majdev
!= majdev
; p
++) ;
634 if (p
->name
!= NULL
) { /* found */
635 if (slice
== WHOLE_DISK_SLICE
)
636 printf("/dev/%s%d%c", p
->name
, unit
, part
);
638 printf("/dev/%s%ds%d%c",
639 p
->name
, unit
, slice
- BASE_SLICE
+ 1, part
+ 'a');
641 printf("unknown (major %d unit %d slice %d part %d)",
642 majdev
, unit
, slice
, part
);
648 * This formats and outputs the value of one variable
650 * Returns zero if anything was actually output.
651 * Returns one if didn't know what to do with this.
652 * Return minus one if we had errors.
656 show_var(int *oid
, size_t nlen
)
658 u_char buf
[BUFSIZ
], *val
, *p
, *nul
;
659 char name
[BUFSIZ
], *fmt
;
660 const char *sep
, *spacer
;
661 int qoid
[CTL_MAXNAME
+2];
665 int (*func
)(int, void *);
668 memcpy(qoid
+ 2, oid
, nlen
* sizeof(int));
672 i
= sysctl(qoid
, nlen
+ 2, name
, &j
, 0, 0);
674 err(1, "sysctl name %d %zu %d", i
, j
, errno
);
686 if (dflag
) { /* just print description */
689 i
= sysctl(qoid
, nlen
+ 2, buf
, &j
, 0, 0);
691 printf("%s%s", name
, sep
);
695 /* find an estimate of how much we need for this var */
697 i
= sysctl(oid
, nlen
, 0, &j
, 0, 0);
698 j
+= j
; /* we want to be sure :-) */
702 i
= sysctl(oid
, nlen
, val
, &len
, 0, 0);
707 fwrite(val
, 1, len
, stdout
);
713 oidfmt(oid
, nlen
, fmt
, &kind
);
718 printf("%s%s", name
, sep
);
719 nul
= memchr(p
, '\0', len
);
720 fwrite(p
, nul
== NULL
? len
: nul
- p
, 1, stdout
);
725 printf("%s%s", name
, sep
);
728 while (len
>= sizeof(int)) {
730 printf("%s%u", spacer
, *(unsigned int *)p
);
731 else if (*fmt
== 'K' && *(int *)p
>= 0)
732 printf("%s%.1fC", spacer
, (*(int *)p
- 2732) / 10.0);
734 printf("%s%d", spacer
, *(int *)p
);
743 printf("%s%s", name
, sep
);
746 if (!strcmp(name
, "machdep.guessed_bootdev"))
747 return machdep_bootdev(*(unsigned long *)p
);
750 while (len
>= sizeof(long)) {
752 printf("%s%lu", spacer
, *(unsigned long *)p
);
754 printf("%s%ld", spacer
, *(long *)p
);
763 printf("%s%s", name
, sep
);
764 printf("%p", *(void **)p
);
769 printf("%s%s", name
, sep
);
772 while (len
>= sizeof(quad_t
)) {
775 spacer
, (uintmax_t)*(u_quad_t
*)p
);
778 spacer
, (intmax_t)*(quad_t
*)p
);
781 len
-= sizeof(int64_t);
782 p
+= sizeof(int64_t);
788 if (!oflag
&& !xflag
) {
790 if (strcmp(fmt
, "S,clockinfo") == 0)
792 else if (strcmp(fmt
, "S,timespec") == 0)
794 else if (strcmp(fmt
, "S,timeval") == 0)
796 else if (strcmp(fmt
, "S,loadavg") == 0)
798 else if (strcmp(fmt
, "S,sensor") == 0)
800 else if (strcmp(fmt
, "T,dev_t") == 0)
802 else if (strcmp(fmt
, "T,udev_t") == 0)
808 printf("%s%s", name
, sep
);
809 return ((*func
)(len
, p
));
814 if (!oflag
&& !xflag
)
817 printf("%s%s", name
, sep
);
818 printf("Format:%s Length:%zu Dump:0x", fmt
, len
);
819 while (len
-- && (xflag
|| p
< val
+ 16))
820 printf("%02x", *p
++);
821 if (!xflag
&& len
> 16)
829 sysctl_all(int *oid
, size_t len
)
831 int name1
[22], name2
[22];
839 memcpy(name1
+2, oid
, len
* sizeof(int));
847 retval
= sysctl(name1
, l1
, name2
, &l2
, 0, 0);
852 err(1, "sysctl(getnext) %d %zu", retval
, l2
);
860 for (i
= 0; i
< len
; i
++)
861 if (name2
[i
] != oid
[i
])
864 retval
= show_var(name2
, l2
);
865 if (retval
== 0 && !bflag
)
868 memcpy(name1
+2, name2
, l2
* sizeof(int));