From 635d7e40f06085ee1bfedd9b6651fee0fc5dd0af Mon Sep 17 00:00:00 2001
From: Suleyman Farajli <suleyman@farajli.net>
Date: Tue, 3 Sep 2024 21:42:37 +0400
Subject: initial version

---
 components/entropy.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 components/entropy.c

(limited to 'components/entropy.c')

diff --git a/components/entropy.c b/components/entropy.c
new file mode 100644
index 0000000..65010b0
--- /dev/null
+++ b/components/entropy.c
@@ -0,0 +1,29 @@
+/* See LICENSE file for copyright and license details. */
+#include "../slstatus.h"
+#if defined(__linux__)
+	#include <stdint.h>
+	#include <stdio.h>
+
+	#include "../util.h"
+
+	#define ENTROPY_AVAIL "/proc/sys/kernel/random/entropy_avail"
+
+	const char *
+	entropy(const char *unused)
+	{
+		uintmax_t num;
+
+		if (pscanf(ENTROPY_AVAIL, "%ju", &num) != 1)
+			return NULL;
+
+		return bprintf("%ju", num);
+	}
+#elif defined(__OpenBSD__) | defined(__FreeBSD__)
+	const char *
+	entropy(const char *unused)
+	{
+		// https://www.unicode.org/charts/PDF/U2200.pdf
+		/* Unicode Character 'INFINITY' (U+221E) */
+		return "\u221E";
+	}
+#endif
-- 
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