temperature.c - slstatus - status monitor
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temperature.c (1436B)
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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