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	temp.c - spoon - set dwm status
	git clone git://git.codemadness.org/spoon
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	---
	temp.c (851B)
	---
	1 #include <err.h>
	2 #include <stdio.h>
	3
	4 #ifdef __OpenBSD__
	5 #include <sys/sysctl.h>
	6 #include <sys/time.h>
	7 #include <sys/sensors.h>
	8
	9 int
	10 tempread(void arg, char buf, size_t len)
	11 {
	12 int mib[5];
	13 struct sensor temp;
	14 size_t sz;
	15
	16 mib[0] = CTL_HW;
	17 mib[1] = HW_SENSORS;
	18 mib[2] = 0; /* cpu0 */
	19 mib[3] = SENSOR_TEMP;
	20 mib[4] = 0; /* temp0 */
	21 sz = sizeof(temp);
	22 if (sysctl(mib, 5, &temp, &sz, NULL, 0) == -1)
	23 return -1;
	24 /* temp.value is in kelvin so convert to celsius for display */
	25 snprintf(buf, len, "%lld", (temp.value - 273150000) / 1000000);
	26 return 0;
	27 }
	28 #elif __linux__
	29 int
	30 tempread(void arg, char buf, size_t len)
	31 {
	32 char *path = arg;
	33 FILE *fp;
	34 int temp;
	35
	36 fp = fopen(path, "r");
	37 if (fp == NULL) {
	38 warn("fopen %s", path);
	39 return -1;
	40 }
	41 fscanf(fp, "%d", &temp);
	42 fclose(fp);
	43 snprintf(buf, len, "%d", temp / 1000);
	44 return 0;
	45 }
	46 #endif