You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: sockcmsg_unix_other.go
    path of file: ./repos/plumber/vendor/golang.org/x/sys/unix
    
    the code of the file until where you have to start completion: // 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.

//go:build aix || darwin || freebsd || linux || netbsd || openbsd || solaris || zos

package unix

import (
	"runtime"
)

// Round the length of a raw sockaddr up to align it properly.
func cmsgAlignOf(salen int) int {
	salign := SizeofPtr

	// dragonfly needs to check ABI version at runtime, see cmsgAlignOf in
	// sockcmsg_dragonfly.go
	switch runtime.GOOS {
	case "aix":
		// There is no alignment on AIX.
		s
    
func cmsgAlignOf(salen int) int {
	salign := SizeofPtr

	// dragonfly needs to check ABI version at runtime, see cmsgAlignOf in
	// sockcmsg_dragonfly.go
	switch runtime.GOOS {
	case "aix":
		// There is no alignment on AIX.
		salign = 1
	case "darwin", "ios", "illumos", "solaris":
		// NOTE: It seems like 64-bit Darwin, Illumos and Solaris
		// kernels still require 32-bit aligned access to network
		// subsystem.
		if SizeofPtr == 8 {
			salign = 4
		}
	case "netbsd", "openbsd":
		// NetBSD and OpenBSD armv7 require 64-bit alignment.
		if runtime.GOARCH == "arm" {
			salign = 8
		}
		// NetBSD aarch64 requires 128-bit alignment.
		if runtime.GOOS == "netbsd" && runtime.GOARCH == "arm64" {
			salign = 16
		}
	case "zos":
		// z/OS socket macros use [32-bit] sizeof(int) alignment,
		// not pointer width.
		salign = SizeofInt
	}

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