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