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- // Copyright 2014 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.
- // +build darwin linux
- package ipv4
- import (
- "os"
- "syscall"
- )
- func ipv4PacketInfo(fd int) (bool, error) {
- v, err := syscall.GetsockoptInt(fd, ianaProtocolIP, sysSockoptPacketInfo)
- if err != nil {
- return false, os.NewSyscallError("getsockopt", err)
- }
- return v == 1, nil
- }
- func setIPv4PacketInfo(fd int, v bool) error {
- return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd, ianaProtocolIP, sysSockoptPacketInfo, boolint(v)))
- }
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