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519474451a
This is a subset of https://golang.org/cl/20022 with only the copyright header lines, so the next CL will be smaller and more reviewable. Go policy has been single space after periods in comments for some time. The copyright header template at: https://golang.org/doc/contribute.html#copyright also uses a single space. Make them all consistent. Change-Id: Icc26c6b8495c3820da6b171ca96a74701b4a01b0 Reviewed-on: https://go-review.googlesource.com/20111 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
68 lines
2.0 KiB
Go
68 lines
2.0 KiB
Go
// 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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package syscall
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import "unsafe"
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func (any *anyMessage) toRoutingMessage(b []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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return &RouteMessage{Header: p.Header, Data: b[SizeofRtMsghdr:any.Msglen]}
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case RTM_IFINFO:
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p := (*InterfaceMessage)(unsafe.Pointer(any))
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return &InterfaceMessage{Header: p.Header, Data: b[SizeofIfMsghdr:any.Msglen]}
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case RTM_NEWADDR, RTM_DELADDR:
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p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
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return &InterfaceAddrMessage{Header: p.Header, Data: b[SizeofIfaMsghdr:any.Msglen]}
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case RTM_NEWMADDR2, RTM_DELMADDR:
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p := (*InterfaceMulticastAddrMessage)(unsafe.Pointer(any))
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return &InterfaceMulticastAddrMessage{Header: p.Header, Data: b[SizeofIfmaMsghdr2:any.Msglen]}
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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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func (m *InterfaceMulticastAddrMessage) sockaddr() ([]Sockaddr, error) {
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var sas [RTAX_MAX]Sockaddr
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b := m.Data[:]
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for i := uint(0); i < RTAX_MAX && len(b) >= minRoutingSockaddrLen; i++ {
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if m.Header.Addrs&(1<<i) == 0 {
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continue
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}
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rsa := (*RawSockaddr)(unsafe.Pointer(&b[0]))
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switch rsa.Family {
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case AF_LINK:
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sa, err := parseSockaddrLink(b)
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if err != nil {
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return nil, err
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}
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sas[i] = sa
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b = b[rsaAlignOf(int(rsa.Len)):]
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case AF_INET, AF_INET6:
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sa, err := parseSockaddrInet(b, rsa.Family)
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if err != nil {
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return nil, err
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}
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sas[i] = sa
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b = b[rsaAlignOf(int(rsa.Len)):]
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default:
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sa, l, err := parseLinkLayerAddr(b)
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if err != nil {
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return nil, err
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}
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sas[i] = sa
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b = b[l:]
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}
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}
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return sas[:], nil
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}
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