1 // Copyright 2011 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
5 // IP-level socket options for Darwin
14 func ipv4MulticastInterface(fd *netFD) (*Interface, error) {
15 if err := fd.incref(false); err != nil {
19 a, err := syscall.GetsockoptInet4Addr(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF)
21 return nil, os.NewSyscallError("getsockopt", err)
23 return ipv4AddrToInterface(IPv4(a[0], a[1], a[2], a[3]))
26 func setIPv4MulticastInterface(fd *netFD, ifi *Interface) error {
27 ip, err := interfaceToIPv4Addr(ifi)
29 return os.NewSyscallError("setsockopt", err)
33 if err := fd.incref(false); err != nil {
37 err = syscall.SetsockoptInet4Addr(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_IF, x)
39 return os.NewSyscallError("setsockopt", err)
44 func ipv4MulticastLoopback(fd *netFD) (bool, error) {
45 if err := fd.incref(false); err != nil {
49 v, err := syscall.GetsockoptInt(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP)
51 return false, os.NewSyscallError("getsockopt", err)
56 func setIPv4MulticastLoopback(fd *netFD, v bool) error {
57 if err := fd.incref(false); err != nil {
61 err := syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_MULTICAST_LOOP, boolint(v))
63 return os.NewSyscallError("setsockopt", err)
68 func ipv4ReceiveInterface(fd *netFD) (bool, error) {
69 if err := fd.incref(false); err != nil {
73 v, err := syscall.GetsockoptInt(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_RECVIF)
75 return false, os.NewSyscallError("getsockopt", err)
80 func setIPv4ReceiveInterface(fd *netFD, v bool) error {
81 if err := fd.incref(false); err != nil {
85 err := syscall.SetsockoptInt(fd.sysfd, syscall.IPPROTO_IP, syscall.IP_RECVIF, boolint(v))
87 return os.NewSyscallError("setsockopt", err)