gcc/libgo/go/crypto/rand/rand_openbsd.go
Ian Lance Taylor 22b955cca5 libgo: update to go1.7rc3
Reviewed-on: https://go-review.googlesource.com/25150

From-SVN: r238662
2016-07-22 18:15:38 +00:00

29 lines
547 B
Go

// 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
}