1 // Copyright 2016 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package rand 6 7 import ( 8 "internal/syscall/unix" 9 ) 10 11 func init() { 12 altGetRandom = getRandomOpenBSD 13 } 14 15 func getRandomOpenBSD(p []byte) (ok bool) { 16 // getentropy(2) returns a maximum of 256 bytes per call 17 for i := 0; i < len(p); i += 256 { 18 end := i + 256 19 if len(p) < end { 20 end = len(p) 21 } 22 err := unix.GetEntropy(p[i:end]) 23 if err != nil { 24 return false 25 } 26 } 27 return true 28 } 29
