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
 5package unix
 6
 7// Round the length of a raw sockaddr up to align it properly.
 8func 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}