From c136197ca8a536b6fd93f0ee2a7de6c6541c0124 Mon Sep 17 00:00:00 2001
From: Jeff Sickel <jas@corpus-callosum.com>
Date: Sat, 4 Jan 2014 10:53:22 -0800
Subject: [PATCH] runtime: plan 9 does have /dev/random

R=golang-codereviews, r, aram
CC=0intro, golang-codereviews, rsc
https://golang.org/cl/43420045
---
 src/pkg/runtime/os_plan9.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/pkg/runtime/os_plan9.c b/src/pkg/runtime/os_plan9.c
index 07db2c3055..dd2828b1d9 100644
--- a/src/pkg/runtime/os_plan9.c
+++ b/src/pkg/runtime/os_plan9.c
@@ -102,8 +102,18 @@ runtime·crash(void)
 void
 runtime·get_random_data(byte **rnd, int32 *rnd_len)
 {
-	*rnd = nil;
-	*rnd_len = 0;
+	static byte random_data[HashRandomBytes];
+	int32 fd;
+
+	fd = runtime·open("/dev/random", 0 /* O_RDONLY */, 0);
+	if(runtime·read(fd, random_data, HashRandomBytes) == HashRandomBytes) {
+		*rnd = random_data;
+		*rnd_len = HashRandomBytes;
+	} else {
+		*rnd = nil;
+		*rnd_len = 0;
+	}
+	runtime·close(fd);
 }
 
 void
-- 
2.48.1