Subversion Repositories openrisc

// Copyright 2011 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.

// IP-level socket options for FreeBSD

package net

import (

        "os"

        "syscall"

)

func ipv4MulticastInterface(fd *netFD) (*Interface, error) {

        fd.incref()

        defer fd.decref()

        mreq, err := syscall.GetsockoptIPMreqn(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF)

        if err != nil {

                return nil, os.NewSyscallError("getsockopt", err)

        }

        if int(mreq.Ifindex) == 0 {

                return nil, nil

        }

        return InterfaceByIndex(int(mreq.Ifindex))

}

func setIPv4MulticastInterface(fd *netFD, ifi *Interface) error {

        var v int32

        if ifi != nil {

                v = int32(ifi.Index)

        }

        mreq := &syscall.IPMreqn{Ifindex: v}

        fd.incref()

        defer fd.decref()

        err := syscall.SetsockoptIPMreqn(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF, mreq)

        if err != nil {

                return os.NewSyscallError("setsockopt", err)

        }

        return nil

}

func ipv4MulticastLoopback(fd *netFD) (bool, error) {

        fd.incref()

        defer fd.decref()

        v, err := syscall.GetsockoptInt(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP)

        if err != nil {

                return false, os.NewSyscallError("getsockopt", err)

        }

        return v == 1, nil

}

func setIPv4MulticastLoopback(fd *netFD, v bool) error {

        fd.incref()

        defer fd.decref()

        err := syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP, boolint(v))

        if err != nil {

                return os.NewSyscallError("setsockopt", err)

        }

        return nil

}

func ipv4ReceiveInterface(fd *netFD) (bool, error) {

        fd.incref()

        defer fd.decref()

        v, err := syscall.GetsockoptInt(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_RECVIF)

        if err != nil {

                return false, os.NewSyscallError("getsockopt", err)

        }

        return v == 1, nil

}

func setIPv4ReceiveInterface(fd *netFD, v bool) error {

        fd.incref()

        defer fd.decref()

        err := syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_RECVIF, boolint(v))

        if err != nil {

                return os.NewSyscallError("setsockopt", err)

        }

        return nil

}