From 8a7703b2be1fb06962f606f62296296cecae2736 Mon Sep 17 00:00:00 2001
From: "chao.an" <anchao@xiaomi.com>
Date: Mon, 7 Dec 2020 11:13:53 +0800
Subject: [PATCH] libs/libc/getrandom(2): add ORed bit mask definition

Change-Id: I1a805420f3ace0b844452dc126d04534680e96f2
Signed-off-by: chao.an <anchao@xiaomi.com>
---
 include/sys/random.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/include/sys/random.h b/include/sys/random.h
index 401146b4ee3..4ac586176b9 100644
--- a/include/sys/random.h
+++ b/include/sys/random.h
@@ -44,6 +44,22 @@
 #include <nuttx/config.h>
 #include <stddef.h>
 
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/*
+ * Flags for getrandom(2)
+ *
+ * GRND_NONBLOCK  Don't block and return EAGAIN instead
+ * GRND_RANDOM    No effect
+ * GRND_INSECURE  Return non-cryptographic random bytes
+ */
+
+#define GRND_NONBLOCK   0x0001
+#define GRND_RANDOM     0x0002
+#define GRND_INSECURE   0x0004
+
 /****************************************************************************
  * Public Function Prototypes
  ****************************************************************************/