1 files changed, 69 insertions, 0 deletions
diff --git a/src/syscall/route_darwin.go b/src/syscall/route_darwin.go
new file mode 100644
index 0000000..b0636ed
--- /dev/null
+++ b/src/syscall/route_darwin.go
@@ -0,0 +1,69 @@
+// 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.
+
+package syscall
+
+import "unsafe"
+
+func (any *anyMessage) toRoutingMessage(b []byte) RoutingMessage {
+	switch any.Type {
+	case RTM_ADD, RTM_DELETE, RTM_CHANGE, RTM_GET, RTM_LOSING, RTM_REDIRECT, RTM_MISS, RTM_LOCK, RTM_RESOLVE:
+		p := (*RouteMessage)(unsafe.Pointer(any))
+		return &RouteMessage{Header: p.Header, Data: b[SizeofRtMsghdr:any.Msglen]}
+	case RTM_IFINFO:
+		p := (*InterfaceMessage)(unsafe.Pointer(any))
+		return &InterfaceMessage{Header: p.Header, Data: b[SizeofIfMsghdr:any.Msglen]}
+	case RTM_NEWADDR, RTM_DELADDR:
+		p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
+		return &InterfaceAddrMessage{Header: p.Header, Data: b[SizeofIfaMsghdr:any.Msglen]}
+	case RTM_NEWMADDR2, RTM_DELMADDR:
+		p := (*InterfaceMulticastAddrMessage)(unsafe.Pointer(any))
+		return &InterfaceMulticastAddrMessage{Header: p.Header, Data: b[SizeofIfmaMsghdr2:any.Msglen]}
+	}
+	return nil
+}
+
+// InterfaceMulticastAddrMessage represents a routing message
+// containing network interface address entries.
+//
+// Deprecated: Use golang.org/x/net/route instead.
+type InterfaceMulticastAddrMessage struct {
+	Header IfmaMsghdr2
+	Data   []byte
+}
+
+func (m *InterfaceMulticastAddrMessage) sockaddr() ([]Sockaddr, error) {
+	var sas [RTAX_MAX]Sockaddr
+	b := m.Data[:]
+	for i := uint(0); i < RTAX_MAX && len(b) >= minRoutingSockaddrLen; i++ {
+		if m.Header.Addrs&(1<<i) == 0 {
+			continue
+		}
+		rsa := (*RawSockaddr)(unsafe.Pointer(&b[0]))
+		switch rsa.Family {
+		case AF_LINK:
+			sa, err := parseSockaddrLink(b)
+			if err != nil {
+				return nil, err
+			}
+			sas[i] = sa
+			b = b[rsaAlignOf(int(rsa.Len)):]
+		case AF_INET, AF_INET6:
+			sa, err := parseSockaddrInet(b, rsa.Family)
+			if err != nil {
+				return nil, err
+			}
+			sas[i] = sa
+			b = b[rsaAlignOf(int(rsa.Len)):]
+		default:
+			sa, l, err := parseLinkLayerAddr(b)
+			if err != nil {
+				return nil, err
+			}
+			sas[i] = sa
+			b = b[l:]
+		}
+	}
+	return sas[:], nil
+}