Source file src/internal/syscall/unix/arc4random_darwin.go

Documentation: internal/syscall/unix

     1  // Copyright 2024 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 unix
     6  
     7  import (
     8  	"internal/abi"
     9  	"unsafe"
    10  )
    11  
    12  //go:cgo_import_dynamic libc_arc4random_buf arc4random_buf "/usr/lib/libSystem.B.dylib"
    13  
    14  func libc_arc4random_buf_trampoline()
    15  
    16  // ARC4Random calls the macOS arc4random_buf(3) function.
    17  func ARC4Random(p []byte) {
    18  	// macOS 11 and 12 abort if length is 0.
    19  	if len(p) == 0 {
    20  		return
    21  	}
    22  	syscall_syscall(abi.FuncPCABI0(libc_arc4random_buf_trampoline),
    23  		uintptr(unsafe.Pointer(unsafe.SliceData(p))), uintptr(len(p)), 0)
    24  }
    25  

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