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// vim:ts=8:expandtab
#include <stdlib.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <yajl/yajl_gen.h>
#include <yajl/yajl_version.h>
#include "i3status.h"
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
#include <err.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#define TZ_ZEROC 2732
#define TZ_KELVTOC(x) (((x) - TZ_ZEROC) / 10), abs(((x) - TZ_ZEROC) % 10)
#endif
#if defined(__OpenBSD__)
#include <sys/param.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/sensors.h>
#include <errno.h>
#include <err.h>
#endif
static char *thermal_zone;
/*
* Reads the CPU temperature from /sys/class/thermal/thermal_zone0/temp and
* returns the temperature in degree celcius.
*
*/
void print_cpu_temperature_info(yajl_gen json_gen, char *buffer, int zone, const char *path, const char *format) {
#ifdef THERMAL_ZONE
const char *walk;
char *outwalk = buffer;
static char buf[16];
if (path == NULL)
asprintf(&thermal_zone, THERMAL_ZONE, zone);
else
asprintf(&thermal_zone, path, zone);
path = thermal_zone;
INSTANCE(path);
for (walk = format; *walk != '\0'; walk++) {
if (*walk != '%') {
*(outwalk++) = *walk;
continue;
}
if (BEGINS_WITH(walk+1, "degrees")) {
#if defined(LINUX)
long int temp;
if (!slurp(path, buf, sizeof(buf)))
goto error;
temp = strtol(buf, NULL, 10);
if (temp == LONG_MIN || temp == LONG_MAX || temp <= 0)
*(outwalk++) = '?';
else
outwalk += sprintf(outwalk, "%ld", (temp/1000));
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
int sysctl_rslt;
size_t sysctl_size = sizeof(sysctl_rslt);
if (sysctlbyname(path, &sysctl_rslt, &sysctl_size, NULL, 0))
goto error;
outwalk += sprintf(outwalk, "%d.%d", TZ_KELVTOC(sysctl_rslt));
#elif defined(__OpenBSD__)
struct sensordev sensordev;
struct sensor sensor;
size_t sdlen, slen;
int dev, numt, mib[5] = { CTL_HW, HW_SENSORS, 0, 0, 0 };
sdlen = sizeof(sensordev);
slen = sizeof(sensor);
for (dev = 0; ; dev++) {
mib[2] = dev;
if (sysctl(mib, 3, &sensordev, &sdlen, NULL, 0) == -1) {
if (errno == ENXIO)
continue;
if (errno == ENOENT)
break;
goto error;
}
/*
* 'path' is actually the node within the full path (eg, cpu0).
* XXX: Extend the API to allow a string instead of just an int for path, this would
* allow us to have a path of 'acpitz0' for example.
*/
if (strncmp(sensordev.xname, path, strlen(path)) == 0) {
mib[3] = SENSOR_TEMP;
for (numt = 0; numt < sensordev.maxnumt[SENSOR_TEMP]; numt++) {
mib[4] = numt;
if (sysctl(mib, 5, &sensor, &slen, NULL, 0) == -1) {
if (errno != ENOENT)
warn("sysctl");
continue;
}
outwalk += sprintf(outwalk, "%.2f", (sensor.value - 273150000) / 1000000.0 );
}
}
}
#endif
walk += strlen("degrees");
}
}
OUTPUT_FULL_TEXT(buffer);
return;
error:
#endif
(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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