slstatus/components/OpenBSD/temperature.c

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/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/sensors.h>
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#include "../../util.h"
const char *
temp(const char *null)
{
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);
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if (sysctl(mib, 5, &temp, &size, NULL, 0) == -1) {
fprintf(stderr, "sysctl 'SENSOR_TEMP': %s\n", strerror(errno));
return NULL;
}
return bprintf("%d", (temp.value - 273150000) / 1000000); /* kelvin to celsius */
}