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f38b6428a2
The getentropy syscall is available on macOS since version 10.12, which is the minimum required version since Go 1.15. Change-Id: I294259af0b11df9669e4dc5fa891d2f2f039d91a Reviewed-on: https://go-review.googlesource.com/c/go/+/302489 Trust: Tobias Klauser <tobias.klauser@gmail.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Go Bot <gobot@golang.org>
31 lines
590 B
Go
31 lines
590 B
Go
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build darwin || openbsd
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// +build darwin openbsd
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package rand
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import (
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"internal/syscall/unix"
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)
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func init() {
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altGetRandom = getEntropy
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}
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func getEntropy(p []byte) (ok bool) {
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// getentropy(2) returns a maximum of 256 bytes per call
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for i := 0; i < len(p); i += 256 {
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end := i + 256
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if len(p) < end {
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end = len(p)
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}
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err := unix.GetEntropy(p[i:end])
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if err != nil {
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return false
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}
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}
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return true
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}
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