mirror of
https://github.com/golang/go
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49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Routing sockets and messages for Darwin
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package syscall
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import (
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"unsafe"
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)
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func (any *anyMessage) toRoutingMessage(buf []byte) RoutingMessage {
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switch any.Type {
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case RTM_ADD, RTM_DELETE, RTM_CHANGE, RTM_GET, RTM_LOSING, RTM_REDIRECT, RTM_MISS, RTM_LOCK, RTM_RESOLVE:
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p := (*RouteMessage)(unsafe.Pointer(any))
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rtm := &RouteMessage{}
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rtm.Header = p.Header
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rtm.Data = buf[SizeofRtMsghdr:any.Msglen]
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return rtm
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case RTM_IFINFO:
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p := (*InterfaceMessage)(unsafe.Pointer(any))
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ifm := &InterfaceMessage{}
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ifm.Header = p.Header
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ifm.Data = buf[SizeofIfMsghdr:any.Msglen]
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return ifm
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case RTM_NEWADDR, RTM_DELADDR:
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p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
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ifam := &InterfaceAddrMessage{}
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ifam.Header = p.Header
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ifam.Data = buf[SizeofIfaMsghdr:any.Msglen]
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return ifam
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case RTM_NEWMADDR2, RTM_DELMADDR:
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p := (*InterfaceMulticastAddrMessage)(unsafe.Pointer(any))
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ifmam := &InterfaceMulticastAddrMessage{}
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ifmam.Header = p.Header
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ifmam.Data = buf[SizeofIfmaMsghdr2:any.Msglen]
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return ifmam
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}
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return nil
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}
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// InterfaceMulticastAddrMessage represents a routing message
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// containing network interface address entries.
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type InterfaceMulticastAddrMessage struct {
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Header IfmaMsghdr2
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Data []byte
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}
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