From 610688e410a0b544d5dfd9de0bc50fab090bd5f3 Mon Sep 17 00:00:00 2001
From: Sadie Powell
Date: Sat, 13 Jul 2024 13:21:50 +0100
Subject: Use getentropy() from POSIX 2024 if it is available.

---
 src/helperfuncs.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/helperfuncs.cpp')

diff --git a/src/helperfuncs.cpp b/src/helperfuncs.cpp
index aeaad9ab9..16e97da1b 100644
--- a/src/helperfuncs.cpp
+++ b/src/helperfuncs.cpp
@@ -456,7 +456,11 @@ unsigned long InspIRCd::GenRandomInt(unsigned long max) const
 // This is overridden by a higher-quality algorithm when TLS support is loaded
 void InspIRCd::DefaultGenRandom(char* output, size_t max)
 {
-#if defined HAS_ARC4RANDOM_BUF
+#ifdef HAS_GETENTROPY
+	if (getentropy(output, max) == 0)
+		return;
+#endif
+#ifdef HAS_ARC4RANDOM_BUF
 	arc4random_buf(output, max);
 #else
 	static std::random_device device;
-- 
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