// 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
|
}
|
