Source file src/syscall/route_dragonfly.go

     1	// Copyright 2011 The Go Authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style
     3	// license that can be found in the LICENSE file.
     4	
     5	package syscall
     6	
     7	import "unsafe"
     8	
     9	func (any *anyMessage) toRoutingMessage(b []byte) RoutingMessage {
    10		switch any.Type {
    11		case RTM_ADD, RTM_DELETE, RTM_CHANGE, RTM_GET, RTM_LOSING, RTM_REDIRECT, RTM_MISS, RTM_LOCK, RTM_RESOLVE:
    12			p := (*RouteMessage)(unsafe.Pointer(any))
    13			// We don't support sockaddr_mpls for now.
    14			p.Header.Addrs &= RTA_DST | RTA_GATEWAY | RTA_NETMASK | RTA_GENMASK | RTA_IFA | RTA_IFP | RTA_BRD | RTA_AUTHOR
    15			return &RouteMessage{Header: p.Header, Data: b[SizeofRtMsghdr:any.Msglen]}
    16		case RTM_IFINFO:
    17			p := (*InterfaceMessage)(unsafe.Pointer(any))
    18			return &InterfaceMessage{Header: p.Header, Data: b[SizeofIfMsghdr:any.Msglen]}
    19		case RTM_IFANNOUNCE:
    20			p := (*InterfaceAnnounceMessage)(unsafe.Pointer(any))
    21			return &InterfaceAnnounceMessage{Header: p.Header}
    22		case RTM_NEWADDR, RTM_DELADDR:
    23			p := (*InterfaceAddrMessage)(unsafe.Pointer(any))
    24			return &InterfaceAddrMessage{Header: p.Header, Data: b[SizeofIfaMsghdr:any.Msglen]}
    25		case RTM_NEWMADDR, RTM_DELMADDR:
    26			p := (*InterfaceMulticastAddrMessage)(unsafe.Pointer(any))
    27			return &InterfaceMulticastAddrMessage{Header: p.Header, Data: b[SizeofIfmaMsghdr:any.Msglen]}
    28		}
    29		return nil
    30	}
    31	
    32	// InterfaceAnnounceMessage represents a routing message containing
    33	// network interface arrival and departure information.
    34	//
    35	// Deprecated: Use golang.org/x/net/route instead.
    36	type InterfaceAnnounceMessage struct {
    37		Header IfAnnounceMsghdr
    38	}
    39	
    40	func (m *InterfaceAnnounceMessage) sockaddr() ([]Sockaddr, error) { return nil, nil }
    41	
    42	// InterfaceMulticastAddrMessage represents a routing message
    43	// containing network interface address entries.
    44	//
    45	// Deprecated: Use golang.org/x/net/route instead.
    46	type InterfaceMulticastAddrMessage struct {
    47		Header IfmaMsghdr
    48		Data   []byte
    49	}
    50	
    51	func (m *InterfaceMulticastAddrMessage) sockaddr() ([]Sockaddr, error) {
    52		var sas [RTAX_MAX]Sockaddr
    53		b := m.Data[:]
    54		for i := uint(0); i < RTAX_MAX && len(b) >= minRoutingSockaddrLen; i++ {
    55			if m.Header.Addrs&(1<<i) == 0 {
    56				continue
    57			}
    58			rsa := (*RawSockaddr)(unsafe.Pointer(&b[0]))
    59			switch rsa.Family {
    60			case AF_LINK:
    61				sa, err := parseSockaddrLink(b)
    62				if err != nil {
    63					return nil, err
    64				}
    65				sas[i] = sa
    66				b = b[rsaAlignOf(int(rsa.Len)):]
    67			case AF_INET, AF_INET6:
    68				sa, err := parseSockaddrInet(b, rsa.Family)
    69				if err != nil {
    70					return nil, err
    71				}
    72				sas[i] = sa
    73				b = b[rsaAlignOf(int(rsa.Len)):]
    74			default:
    75				sa, l, err := parseLinkLayerAddr(b)
    76				if err != nil {
    77					return nil, err
    78				}
    79				sas[i] = sa
    80				b = b[l:]
    81			}
    82		}
    83		return sas[:], nil
    84	}
    85	

View as plain text