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-rw-r--r--components/entropy.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/components/entropy.c b/components/entropy.c
new file mode 100644
index 0000000..65c65a1
--- /dev/null
+++ b/components/entropy.c
@@ -0,0 +1,15 @@
+/* See LICENSE file for copyright and license details. */
+#if defined(__linux__)
+#include <stdio.h>
+
+#include "../util.h"
+
+const char *
+entropy(void)
+{
+ int num;
+
+ return (pscanf("/proc/sys/kernel/random/entropy_avail", "%d", &num) == 1) ?
+ bprintf("%d", num) : NULL;
+}
+#endif