From c673e9b9ea5f25a491efa2d62cd67456758886c2 Mon Sep 17 00:00:00 2001
From: Philip Wittamore <philip@wittamore.com>
Date: Sat, 10 May 2025 12:12:16 +0200
Subject: update

---
 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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