suckless/slstatus

components/temperature.c in master
Repositories | Summary | Log | Files | README | LICENSE

temperature.c (1436B) download


 1/* See LICENSE file for copyright and license details. */
 2#include <stddef.h>
 3
 4#include "../slstatus.h"
 5#include "../util.h"
 6
 7
 8#if defined(__linux__)
 9	#include <stdint.h>
10
11	const char *
12	temp(const char *file)
13	{
14		uintmax_t temp;
15
16		if (pscanf(file, "%ju", &temp) != 1)
17			return NULL;
18
19		return bprintf("%ju", temp / 1000);
20	}
21#elif defined(__OpenBSD__)
22	#include <stdio.h>
23	#include <sys/time.h> /* before <sys/sensors.h> for struct timeval */
24	#include <sys/sensors.h>
25	#include <sys/sysctl.h>
26
27	const char *
28	temp(const char *unused)
29	{
30		int mib[5];
31		size_t size;
32		struct sensor temp;
33
34		mib[0] = CTL_HW;
35		mib[1] = HW_SENSORS;
36		mib[2] = 0; /* cpu0 */
37		mib[3] = SENSOR_TEMP;
38		mib[4] = 0; /* temp0 */
39
40		size = sizeof(temp);
41
42		if (sysctl(mib, 5, &temp, &size, NULL, 0) < 0) {
43			warn("sysctl 'SENSOR_TEMP':");
44			return NULL;
45		}
46
47		/* kelvin to celsius */
48		return bprintf("%d", (int)((float)(temp.value-273150000) / 1E6));
49	}
50#elif defined(__FreeBSD__)
51	#include <stdio.h>
52	#include <stdlib.h>
53	#include <sys/sysctl.h>
54
55	#define ACPI_TEMP "hw.acpi.thermal.%s.temperature"
56
57	const char *
58	temp(const char *zone)
59	{
60		char buf[256];
61		int temp;
62		size_t len;
63
64		len = sizeof(temp);
65		snprintf(buf, sizeof(buf), ACPI_TEMP, zone);
66		if (sysctlbyname(buf, &temp, &len, NULL, 0) < 0
67				|| !len)
68			return NULL;
69
70		/* kelvin to decimal celcius */
71		return bprintf("%d.%d", (temp - 2731) / 10, abs((temp - 2731) % 10));
72	}
73#endif