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 OpenBSD

package net

import (

        "os"

        "syscall"

)

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

        fd.incref()

        defer fd.decref()

        a, err := syscall.GetsockoptInet4Addr(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF)

        if err != nil {

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

        }

        return ipv4AddrToInterface(IPv4(a[0], a[1], a[2], a[3]))

}

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

        ip, err := interfaceToIPv4Addr(ifi)

        if err != nil {

                return os.NewSyscallError("setsockopt", err)

        }

        var x [4]byte

        copy(x[:], ip.To4())

        fd.incref()

        defer fd.decref()

        err = syscall.SetsockoptInet4Addr(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF, x)

        if err != nil {

                return os.NewSyscallError("setsockopt", err)

        }

        return nil

}

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

        fd.incref()

        defer fd.decref()

        v, err := syscall.GetsockoptByte(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.SetsockoptByte(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP, byte(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

}