// Copyright 2019 The Go Authors. All rights reserved.

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.

package unix

// Round the length of a raw sockaddr up to align it properly.

func cmsgAlignOf(salen int) int {

	salign := SizeofPtr

	if SizeofPtr == 8 && !supportsABI(_dragonflyABIChangeVersion) {

		// 64-bit Dragonfly before the September 2019 ABI changes still requires

		// 32-bit aligned access to network subsystem.

		salign = 4

	}

	return (salen + salign - 1) & ^(salign - 1)

}