1 files changed, 41 insertions, 0 deletions
diff --git a/src/proc_sys_kernel_random_entropy_avail.c b/src/proc_sys_kernel_random_entropy_avail.c
new file mode 100755
index 000000000..be9070aca
--- /dev/null
+++ b/src/proc_sys_kernel_random_entropy_avail.c
@@ -0,0 +1,41 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "common.h"
+#include "appconfig.h"
+#include "procfile.h"
+#include "rrd.h"
+#include "plugin_proc.h"
+
+int do_proc_sys_kernel_random_entropy_avail(int update_every, unsigned long long dt) {
+	static procfile *ff = NULL;
+
+	if(dt) {} ;
+
+	if(!ff) {
+		char filename[FILENAME_MAX + 1];
+		snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/sys/kernel/random/entropy_avail");
+		ff = procfile_open(config_get("plugin:proc:/proc/sys/kernel/random/entropy_avail", "filename to monitor", filename), "", PROCFILE_FLAG_DEFAULT);
+	}
+	if(!ff) return 1;
+
+	ff = procfile_readall(ff);
+	if(!ff) return 0; // we return 0, so that we will retry to open it next time
+
+	unsigned long long entropy = strtoull(procfile_lineword(ff, 0, 0), NULL, 10);
+
+	RRDSET *st = rrdset_find_bytype("system", "entropy");
+	if(!st) {
+		st = rrdset_create("system", "entropy", NULL, "entropy", NULL, "Available Entropy", "entropy", 1000, update_every, RRDSET_TYPE_LINE);
+		rrddim_add(st, "entropy", NULL, 1, 1, RRDDIM_ABSOLUTE);
+	}
+	else rrdset_next(st);
+
+	rrddim_set(st, "entropy", entropy);
+	rrdset_done(st);
+
+	return 0;
+}