// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build js || wasip1 || windows

package net

const readMsgFlags = 0

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

//go:build dragonfly || linux || netbsd || openbsd

package net

import "syscall"

const readMsgFlags = syscall.MSG_CMSG_CLOEXEC

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

//go:build aix || darwin || freebsd || solaris

package net

import "syscall"

const readMsgFlags = 0

func setReadMsgCloseOnExec(oob []byte) {
	scms, err := syscall.ParseSocketControlMessage(oob)
	if err != nil {
		return
	}

	for _, scm := range scms {

	var sa syscall.Sockaddr
	n, oobn, flags, sa, err = c.fd.readMsg(b, oob, readMsgFlags)
	if readMsgFlags == 0 && err == nil && oobn > 0 {
		setReadMsgCloseOnExec(oob[:oobn])
	}

	switch sa := sa.(type) {
	case *syscall.SockaddrUnix:
		if sa.Name != "" {
			addr = &UnixAddr{Name: sa.Name, Net: sotypeToNet(c.fd.sotype)}
		}
	}
	return
}