From e0898f87bf6d1a73d254ddacbf25d21a8700f725 Mon Sep 17 00:00:00 2001
From: Loganaden Velvindron <logan@cyberstorm.mu>
Date: Fri, 6 Dec 2024 10:29:49 +0400
Subject: [PATCH] Add support for NetBSD getrandom interface. (Based on work
 done by University of Mauritius Resilient and Innovative Computing Research
 Group)

Signed-off-by: Loganaden Velvindron <logan@cyberstorm.mu>
Signed-off-by: Jaykishan Mutkawoa <jay@cyberstorm.mu>
---
 ref/randombytes.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/ref/randombytes.c b/ref/randombytes.c
index 7f4b857..8a12a42 100644
--- a/ref/randombytes.c
+++ b/ref/randombytes.c
@@ -13,6 +13,8 @@
 #define _GNU_SOURCE
 #include <unistd.h>
 #include <sys/syscall.h>
+#elif __NetBSD__
+#include <sys/random.h>
 #else
 #include <unistd.h>
 #endif
@@ -53,6 +55,21 @@ void randombytes(uint8_t *out, size_t outlen) {
     outlen -= ret;
   }
 }
+#elif defined(__NetBSD__)
+void randombytes(uint8_t *out, size_t outlen) {
+  ssize_t ret;
+
+  while(outlen > 0) {
+    ret = getrandom(out, outlen, 0);
+    if(ret == -1 && errno == EINTR)
+      continue;
+    else if(ret == -1)
+      abort();
+
+    out += ret;
+    outlen -= ret;
+  }
+}
 #else
 void randombytes(uint8_t *out, size_t outlen) {
   static int fd = -1;