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_buf_early.c | 54 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 src/librandom/random_buf_early.c

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

diff --git a/src/librandom/random_buf_early.c b/src/librandom/random_buf_early.c
new file mode 100644
index 0000000..a306239
--- /dev/null
+++ b/src/librandom/random_buf_early.c
@@ -0,0 +1,54 @@
+/* ISC license. */
+
+#include <skalibs/sysdeps.h>
+
+#if defined(SKALIBS_HASARC4RANDOM)
+
+#include <skalibs/nonposix.h>
+#include <stdlib.h>
+#include <skalibs/random.h>
+
+void random_buf_early (char *s, size_t n)
+{
+  arc4random_buf(s, n) ;
+}
+
+#elif defined(SKALIBS_HASGETRANDOM) && defined(SKALIBS_HASGRNDINSECURE)
+
+#include <sys/random.h>
+
+#include <skalibs/random.h>
+
+void random_buf_early (char *s, size_t n)
+{
+  while (n)
+  {
+    ssize_t r = getrandom(s, n, GRND_INSECURE) ;
+    if (r >= 0)
+    {
+      s += r ;
+      n -= r ;
+    }
+  }
+}
+
+#elif defined(SKALIBS_HASDEVURANDOM)
+
+#include "random-internal.h"
+
+void random_buf_early (char *s, size_t n)
+{
+  random_devurandom(s, n) ;
+}
+
+#else
+
+#include <skalibs/surf.h>
+#include <skalibs/random.h>
+
+void random_buf_early (char *s, size_t n)
+{
+  autosurf(s, n) ;
+}
+
+#endif
-- 
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