components/temperature.c
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/* See LICENSE file for copyright and license details. */
#include <stddef.h>
#include "../util.h"
#if defined(__linux__)
#include <stdint.h>
const char *
temp(const char *file)
{
uintmax_t temp;
if (pscanf(file, "%ju", &temp) != 1) {
return NULL;
}
return bprintf("%ju", temp / 1000);
}
#elif defined(__OpenBSD__)
#include <stdio.h>
#include <sys/time.h> /* before <sys/sensors.h> for struct timeval */
#include <sys/sensors.h>
#include <sys/sysctl.h>
const char *
temp(const char *unused)
{
int mib[5];
size_t size;
struct sensor temp;
mib[0] = CTL_HW;
mib[1] = HW_SENSORS;
mib[2] = 0; /* cpu0 */
mib[3] = SENSOR_TEMP;
mib[4] = 0; /* temp0 */
size = sizeof(temp);
if (sysctl(mib, 5, &temp, &size, NULL, 0) < 0) {
warn("sysctl 'SENSOR_TEMP':");
return NULL;
}
/* kelvin to celsius */
return bprintf("%d", (temp.value - 273150000) / 1E6);
}
#elif defined(__FreeBSD__)
#include <stdio.h>
#include <stdlib.h>
#include <sys/sysctl.h>
const char *
temp(const char *zone)
{
char buf[256];
int temp;
size_t len;
len = sizeof(temp);
snprintf(buf, sizeof(buf), "hw.acpi.thermal.%s.temperature", zone);
if (sysctlbyname(buf, &temp, &len, NULL, 0) == -1
|| !len)
return NULL;
/* kelvin to decimal celcius */
return bprintf("%d.%d", (temp - 2731) / 10, abs((temp - 2731) % 10));
}
#endif