From 4e75b40d8a96c5d51490ddea43566fe8e6d4168c Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Sat, 9 Apr 2022 02:28:05 +0000
Subject:  Prepare for 2.12.0.0. librandom revamp.

Signed-off-by: Laurent Bercot <ska@appnovation.com>
---
 src/librandom/random_devurandom.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 src/librandom/random_devurandom.c

(limited to 'src/librandom/random_devurandom.c')

diff --git a/src/librandom/random_devurandom.c b/src/librandom/random_devurandom.c
new file mode 100644
index 0000000..0ad752b
--- /dev/null
+++ b/src/librandom/random_devurandom.c
@@ -0,0 +1,22 @@
+/* ISC license. */
+
+#include <stddef.h>
+
+#include <skalibs/allreadwrite.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/djbunix.h>
+#include <skalibs/random.h>
+
+void random_devurandom (char *s, size_t n)
+{
+  static int random_fd = -1 ;
+  size_t r ;
+  if (random_fd < 0)
+  {
+    random_fd = openbc_read("/dev/urandom") ;
+    if (random_fd < 0)
+      strerr_diefu2sys(111, "open ", "/dev/urandom") ;
+  }
+  r = allread(random_fd, s, n) ;
+  if (r < n) strerr_diefu2sys(111, "read from ", "/dev/urandom") ;
+}
-- 
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