1 files changed, 45 insertions, 0 deletions
diff --git a/components/temperature.c b/components/temperature.c
new file mode 100644
index 0000000..e2c6a77
--- /dev/null
+++ b/components/temperature.c
@@ -0,0 +1,45 @@
+/* See LICENSE file for copyright and license details. */
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#if defined(__OpenBSD__)
+#include <sys/sysctl.h>
+#include <sys/time.h>
+#include <sys/sensors.h>
+#endif
+
+#include "../util.h"
+
+#if defined(__linux__)
+const char *
+temp(const char *file)
+{
+	int temp;
+
+	return (pscanf(file, "%d", &temp) == 1) ?
+	       bprintf("%d", temp / 1000) : NULL;
+}
+#elif defined(__OpenBSD__)
+const char *
+temp(const char *null)
+{
+	int mib[5];
+	size_t size;
+	struct sensor temp;
+
+	mib[0] = CTL_HW;
+	mib[1] = HW_SENSORS;
+	mib[2] = 0; /* cpu0 */
+	mib[3] = SENSOR_TEMP;
+	mib[4] = 0; /* temp0 */
+
+	size = sizeof(temp);
+
+	if (sysctl(mib, 5, &temp, &size, NULL, 0) == -1) {
+		fprintf(stderr, "sysctl 'SENSOR_TEMP': %s\n", strerror(errno));
+		return NULL;
+	}
+
+	return bprintf("%d", (temp.value - 273150000) / 1000000); /* kelvin to celsius */
+}
+#endif