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731a015ab8
Following CL 313230, this is for internal/syscall/unix package. Updates #45702. Change-Id: Ie6d8c1923dfeae56896212393c5c2a6e257648d2 Reviewed-on: https://go-review.googlesource.com/c/go/+/316649 Trust: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> Reviewed-by: Than McIntosh <thanm@google.com> TryBot-Result: Go Bot <gobot@golang.org>
30 lines
738 B
Go
30 lines
738 B
Go
// Copyright 2021 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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"internal/abi"
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"syscall"
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"unsafe"
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)
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//go:cgo_import_dynamic libc_getentropy getentropy "/usr/lib/libSystem.B.dylib"
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func libc_getentropy_trampoline()
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// GetEntropy calls the macOS getentropy system call.
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func GetEntropy(p []byte) error {
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_, _, errno := syscall_syscall(abi.FuncPCABI0(libc_getentropy_trampoline),
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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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//go:linkname syscall_syscall syscall.syscall
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func syscall_syscall(fn, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno)
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