| // 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 freebsd linux |
| "golang.org/x/net/internal/iana" |
| func getsockoptIPMreqn(fd, name int) (*net.Interface, error) { |
| l := uint32(sysSizeofIPMreqn) |
| if err := getsockopt(fd, iana.ProtocolIP, name, unsafe.Pointer(&mreqn), &l); err != nil { |
| return nil, os.NewSyscallError("getsockopt", err) |
| ifi, err := net.InterfaceByIndex(int(mreqn.Ifindex)) |
| func setsockoptIPMreqn(fd, name int, ifi *net.Interface, grp net.IP) error { |
| mreqn.Ifindex = int32(ifi.Index) |
| mreqn.Multiaddr = [4]byte{grp[0], grp[1], grp[2], grp[3]} |
| return os.NewSyscallError("setsockopt", setsockopt(fd, iana.ProtocolIP, name, unsafe.Pointer(&mreqn), sysSizeofIPMreqn)) |