sockcmsg_dragonfly.go raw

   1  // Copyright 2019 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  // Round the length of a raw sockaddr up to align it properly.
   8  func cmsgAlignOf(salen int) int {
   9  	salign := SizeofPtr
  10  	if SizeofPtr == 8 && !supportsABI(_dragonflyABIChangeVersion) {
  11  		// 64-bit Dragonfly before the September 2019 ABI changes still requires
  12  		// 32-bit aligned access to network subsystem.
  13  		salign = 4
  14  	}
  15  	return (salen + salign - 1) & ^(salign - 1)
  16  }
  17