25 lines
554 B
Go
25 lines
554 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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package unix
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import (
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"syscall"
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"unsafe"
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)
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// getentropy(2)'s syscall number, from /usr/src/sys/kern/syscalls.master
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const entropyTrap uintptr = 7
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// GetEntropy calls the OpenBSD getentropy system call.
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func GetEntropy(p []byte) error {
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_, _, errno := syscall.Syscall(entropyTrap,
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uintptr(unsafe.Pointer(&p[0])),
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uintptr(len(p)),
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0)
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if errno != 0 {
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return errno
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}
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return nil
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}
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