libgo: update to go1.7rc3

    
    Reviewed-on: https://go-review.googlesource.com/25150

From-SVN: r238662

1 files changed, 28 insertions, 0 deletions

diff --git a/libgo/go/crypto/rand/rand_openbsd.go b/libgo/go/crypto/rand/rand_openbsd.go
new file mode 100644
index 0000000..9cc39f7
--- /dev/null
+++ b/libgo/go/crypto/rand/rand_openbsd.go
@@ -0,0 +1,28 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package rand
+
+import (
+	"internal/syscall/unix"
+)
+
+func init() {
+	altGetRandom = getRandomOpenBSD
+}
+
+func getRandomOpenBSD(p []byte) (ok bool) {
+	// getentropy(2) returns a maximum of 256 bytes per call
+	for i := 0; i < len(p); i += 256 {
+		end := i + 256
+		if len(p) < end {
+			end = len(p)
+		}
+		err := unix.GetEntropy(p[i:end])
+		if err != nil {
+			return false
+		}
+	}
+	return true
+}