1 files changed, 32 insertions, 0 deletions
diff --git a/uptime.c b/uptime.c
new file mode 100644
index 0000000..ce6093f
--- /dev/null
+++ b/uptime.c
@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <string.h>
+#include "common.h"
+
+int uptime(int argc, char **argv) {
+	FILE *f;
+	float uptime;
+	if(argc > 1) {
+		if(!strcmp(argv[1], "config")) {
+			puts("graph_title Uptime\n"
+				"graph_args --base 1000 -l 0 \n"
+				"graph_vlabel uptime in days\n"
+				"uptime.label uptime\n"
+				"uptime.draw AREA");
+			return 0;
+		}
+		if(!strcmp(argv[1], "autoconf"))
+			return writeyes();
+	}
+	if(!(f=fopen("/proc/uptime", "r"))) {
+		fputs("cannot open /proc/uptime\n", stderr);
+		return 1;
+	}
+	if(1 != fscanf(f, "%f", &uptime)) {
+		fputs("cannot read from /proc/uptime\n", stderr);
+		fclose(f);
+		return 1;
+	}
+	fclose(f);
+	printf("uptime.value %.2f\n", uptime/86400);
+	return 0;
+}