diff options
Diffstat (limited to 'Godeps/_workspace/src/code.google.com/p/go.net/ipv6/control_rfc2292_unix.go')
-rw-r--r-- | Godeps/_workspace/src/code.google.com/p/go.net/ipv6/control_rfc2292_unix.go | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/Godeps/_workspace/src/code.google.com/p/go.net/ipv6/control_rfc2292_unix.go b/Godeps/_workspace/src/code.google.com/p/go.net/ipv6/control_rfc2292_unix.go deleted file mode 100644 index 47196c58f0..0000000000 --- a/Godeps/_workspace/src/code.google.com/p/go.net/ipv6/control_rfc2292_unix.go +++ /dev/null @@ -1,151 +0,0 @@ -// Copyright 2013 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 - -package ipv6 - -import ( - "net" - "os" - "syscall" - "unsafe" -) - -const pktinfo = FlagDst | FlagInterface - -func setControlMessage(fd int, opt *rawOpt, cf ControlFlags, on bool) error { - opt.Lock() - defer opt.Unlock() - if cf&FlagHopLimit != 0 { - if err := setIPv6ReceiveHopLimit(fd, on); err != nil { - return err - } - if on { - opt.set(FlagHopLimit) - } else { - opt.clear(FlagHopLimit) - } - } - if cf&pktinfo != 0 { - if err := setIPv6ReceivePacketInfo(fd, on); err != nil { - return err - } - if on { - opt.set(cf & pktinfo) - } else { - opt.clear(cf & pktinfo) - } - } - return nil -} - -func newControlMessage(opt *rawOpt) (oob []byte) { - opt.Lock() - defer opt.Unlock() - l, off := 0, 0 - if opt.isset(FlagHopLimit) { - l += syscall.CmsgSpace(4) - } - if opt.isset(pktinfo) { - l += syscall.CmsgSpace(sysSizeofPacketInfo) - } - if l > 0 { - oob = make([]byte, l) - if opt.isset(FlagHopLimit) { - m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off])) - m.Level = ianaProtocolIPv6 - m.Type = sysSockopt2292HopLimit - m.SetLen(syscall.CmsgLen(4)) - off += syscall.CmsgSpace(4) - } - if opt.isset(pktinfo) { - m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off])) - m.Level = ianaProtocolIPv6 - m.Type = sysSockopt2292PacketInfo - m.SetLen(syscall.CmsgLen(sysSizeofPacketInfo)) - off += syscall.CmsgSpace(sysSizeofPacketInfo) - } - } - return -} - -func parseControlMessage(b []byte) (*ControlMessage, error) { - if len(b) == 0 { - return nil, nil - } - cmsgs, err := syscall.ParseSocketControlMessage(b) - if err != nil { - return nil, os.NewSyscallError("parse socket control message", err) - } - cm := &ControlMessage{} - for _, m := range cmsgs { - if m.Header.Level != ianaProtocolIPv6 { - continue - } - switch m.Header.Type { - case sysSockopt2292HopLimit: - cm.HopLimit = int(*(*byte)(unsafe.Pointer(&m.Data[:1][0]))) - case sysSockopt2292PacketInfo: - pi := (*sysPacketInfo)(unsafe.Pointer(&m.Data[0])) - cm.IfIndex = int(pi.IfIndex) - cm.Dst = pi.IP[:] - } - } - return cm, nil -} - -func marshalControlMessage(cm *ControlMessage) (oob []byte) { - if cm == nil { - return - } - l, off := 0, 0 - if cm.HopLimit > 0 { - l += syscall.CmsgSpace(4) - } - pion := false - if cm.Src.To4() == nil && cm.Src.To16() != nil || cm.IfIndex != 0 { - pion = true - l += syscall.CmsgSpace(sysSizeofPacketInfo) - } - if len(cm.NextHop) == net.IPv6len { - l += syscall.CmsgSpace(syscall.SizeofSockaddrInet6) - } - if l > 0 { - oob = make([]byte, l) - if cm.HopLimit > 0 { - m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off])) - m.Level = ianaProtocolIPv6 - m.Type = sysSockopt2292HopLimit - m.SetLen(syscall.CmsgLen(4)) - data := oob[off+syscall.CmsgLen(0):] - *(*byte)(unsafe.Pointer(&data[:1][0])) = byte(cm.HopLimit) - off += syscall.CmsgSpace(4) - } - if pion { - m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off])) - m.Level = ianaProtocolIPv6 - m.Type = sysSockopt2292PacketInfo - m.SetLen(syscall.CmsgLen(sysSizeofPacketInfo)) - pi := (*sysPacketInfo)(unsafe.Pointer(&oob[off+syscall.CmsgLen(0)])) - if ip := cm.Src.To16(); ip != nil && ip.To4() == nil { - copy(pi.IP[:], ip) - } - if cm.IfIndex != 0 { - pi.IfIndex = uint32(cm.IfIndex) - } - off += syscall.CmsgSpace(sysSizeofPacketInfo) - } - if len(cm.NextHop) == net.IPv6len { - m := (*syscall.Cmsghdr)(unsafe.Pointer(&oob[off])) - m.Level = ianaProtocolIPv6 - m.Type = sysSockopt2292NextHop - m.SetLen(syscall.CmsgLen(syscall.SizeofSockaddrInet6)) - sa := (*syscall.RawSockaddrInet6)(unsafe.Pointer(&oob[off+syscall.CmsgLen(0)])) - setSockaddr(sa, cm.NextHop, cm.IfIndex) - off += syscall.CmsgSpace(syscall.SizeofSockaddrInet6) - } - } - return -} |