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// +build openbsd
package devices
// loosely based on https://github.com/openbsd/src/blob/master/sbin/sysctl/sysctl.c#L2517
// #include <sys/time.h>
// #include <sys/sysctl.h>
// #include <sys/sensors.h>
import "C"
import (
"strconv"
"syscall"
"unsafe"
)
// TODO: Add filtering. Getting the temperature sensor names is non-trivial for OpenBSD, and until I can test it, leave it unimplemented
func init() {
RegisterTemp(update)
}
func update(temps map[string]int) map[string]error {
mib := []C.int{0, 1, 2, 3, 4}
var snsrdev C.struct_sensordev
var len C.ulong = C.sizeof_struct_sensordev
mib[0] = C.CTL_HW
mib[1] = C.HW_SENSORS
mib[3] = C.SENSOR_TEMP
var i C.int
for i = 0; ; i++ {
mib[2] = i
if v, e := C.sysctl(&mib[0], 3, unsafe.Pointer(&snsrdev), &len, nil, 0); v == -1 {
if e == syscall.ENXIO {
continue
}
if e == syscall.ENOENT {
break
}
}
getTemp(temps, mib, 4, &snsrdev, 0)
}
return nil
}
func getTemp(temps map[string]int, mib []C.int, mlen int, snsrdev *C.struct_sensordev, index int) {
switch mlen {
case 4:
k := mib[3]
var numt C.int
for numt = 0; numt < snsrdev.maxnumt[k]; numt++ {
mib[4] = numt
getTemp(temps, mib, mlen+1, snsrdev, int(numt))
}
case 5:
var snsr C.struct_sensor
var slen C.size_t = C.sizeof_struct_sensor
if v, _ := C.sysctl(&mib[0], 5, unsafe.Pointer(&snsr), &slen, nil, 0); v == -1 {
return
}
if slen > 0 && (snsr.flags&C.SENSOR_FINVALID) == 0 {
key := C.GoString(&snsrdev.xname[0]) + ".temp" + strconv.Itoa(index)
temp := int((snsr.value - 273150000.0) / 1000000.0)
if _, ok := temps[key]; ok {
temps[key] = temp
}
}
}
}
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