119 lines
3.6 KiB
C
119 lines
3.6 KiB
C
// vim:ts=8:expandtab
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#include <stdlib.h>
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#include <limits.h>
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#include <stdio.h>
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#include <string.h>
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#include <yajl/yajl_gen.h>
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#include <yajl/yajl_version.h>
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#include "i3status.h"
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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#include <err.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#define TZ_ZEROC 2732
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#define TZ_KELVTOC(x) (((x) - TZ_ZEROC) / 10), abs(((x) - TZ_ZEROC) % 10)
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#endif
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#if defined(__OpenBSD__)
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <sys/sensors.h>
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#include <errno.h>
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#include <err.h>
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#endif
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static char *thermal_zone;
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/*
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* Reads the CPU temperature from /sys/class/thermal/thermal_zone0/temp and
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* returns the temperature in degree celcius.
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*
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*/
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void print_cpu_temperature_info(yajl_gen json_gen, char *buffer, int zone, const char *path, const char *format) {
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#ifdef THERMAL_ZONE
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const char *walk;
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char *outwalk = buffer;
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static char buf[16];
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if (path == NULL)
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asprintf(&thermal_zone, THERMAL_ZONE, zone);
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else
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asprintf(&thermal_zone, path, zone);
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path = thermal_zone;
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INSTANCE(path);
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for (walk = format; *walk != '\0'; walk++) {
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if (*walk != '%') {
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*(outwalk++) = *walk;
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continue;
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}
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if (BEGINS_WITH(walk+1, "degrees")) {
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#if defined(LINUX)
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long int temp;
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if (!slurp(path, buf, sizeof(buf)))
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goto error;
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temp = strtol(buf, NULL, 10);
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if (temp == LONG_MIN || temp == LONG_MAX || temp <= 0)
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*(outwalk++) = '?';
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else
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outwalk += sprintf(outwalk, "%ld", (temp/1000));
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#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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int sysctl_rslt;
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size_t sysctl_size = sizeof(sysctl_rslt);
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if (sysctlbyname(path, &sysctl_rslt, &sysctl_size, NULL, 0))
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goto error;
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outwalk += sprintf(outwalk, "%d.%d", TZ_KELVTOC(sysctl_rslt));
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#elif defined(__OpenBSD__)
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struct sensordev sensordev;
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struct sensor sensor;
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size_t sdlen, slen;
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int dev, numt, mib[5] = { CTL_HW, HW_SENSORS, 0, 0, 0 };
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sdlen = sizeof(sensordev);
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slen = sizeof(sensor);
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for (dev = 0; ; dev++) {
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mib[2] = dev;
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if (sysctl(mib, 3, &sensordev, &sdlen, NULL, 0) == -1) {
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if (errno == ENXIO)
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continue;
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if (errno == ENOENT)
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break;
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goto error;
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}
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/*
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* 'path' is actually the node within the full path (eg, cpu0).
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* XXX: Extend the API to allow a string instead of just an int for path, this would
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* allow us to have a path of 'acpitz0' for example.
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*/
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if (strncmp(sensordev.xname, path, strlen(path)) == 0) {
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mib[3] = SENSOR_TEMP;
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for (numt = 0; numt < sensordev.maxnumt[SENSOR_TEMP]; numt++) {
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mib[4] = numt;
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if (sysctl(mib, 5, &sensor, &slen, NULL, 0) == -1) {
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if (errno != ENOENT)
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warn("sysctl");
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continue;
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}
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outwalk += sprintf(outwalk, "%.2f", (sensor.value - 273150000) / 1000000.0 );
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}
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}
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}
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#endif
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walk += strlen("degrees");
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}
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}
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OUTPUT_FULL_TEXT(buffer);
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return;
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error:
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#endif
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OUTPUT_FULL_TEXT("cant read temp");
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(void)fputs("i3status: Cannot read temperature. Verify that you have a thermal zone in /sys/class/thermal or disable the cpu_temperature module in your i3status config.\n", stderr);
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}
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