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syscall: handle routing entry in ParseRoutingSockaddr on BSD variants

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R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/4972053
This commit is contained in:
Mikio Hara 2011-08-31 13:05:49 -04:00 committed by Russ Cox
parent 0c9ea63b3b
commit 0c6581cc25
1 changed files with 46 additions and 3 deletions
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49
src/pkg/syscall/route_bsd.go
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@ -72,9 +72,52 @@ type RouteMessage struct {
Data []byte
}
func (m *RouteMessage) sockaddr() (sas []Sockaddr) {
// TODO: implement this in the near future
return nil
const rtaRtMask = RTA_DST | RTA_GATEWAY | RTA_NETMASK | RTA_GENMASK
func (m *RouteMessage) sockaddr() []Sockaddr {
var (
af int
sas [4]Sockaddr
)
buf := m.Data[:]
for i := uint(0); i < RTAX_MAX; i++ {
if m.Header.Addrs&rtaRtMask&(1<<i) == 0 {
continue
}
rsa := (*RawSockaddr)(unsafe.Pointer(&buf[0]))
switch i {
case RTAX_DST, RTAX_GATEWAY:
sa, e := anyToSockaddr((*RawSockaddrAny)(unsafe.Pointer(rsa)))
if e != 0 {
return nil
}
if i == RTAX_DST {
af = int(rsa.Family)
}
sas[i] = sa
case RTAX_NETMASK, RTAX_GENMASK:
switch af {
case AF_INET:
rsa4 := (*RawSockaddrInet4)(unsafe.Pointer(&buf[0]))
sa := new(SockaddrInet4)
for j := 0; rsa4.Len > 0 && j < int(rsa4.Len)-int(unsafe.Offsetof(rsa4.Addr)); j++ {
sa.Addr[j] = rsa4.Addr[j]
}
sas[i] = sa
case AF_INET6:
rsa6 := (*RawSockaddrInet6)(unsafe.Pointer(&buf[0]))
sa := new(SockaddrInet6)
for j := 0; rsa6.Len > 0 && j < int(rsa6.Len)-int(unsafe.Offsetof(rsa6.Addr)); j++ {
sa.Addr[j] = rsa6.Addr[j]
}
sas[i] = sa
}
}
buf = buf[rsaAlignOf(int(rsa.Len)):]
}
return sas[:]
}
// InterfaceMessage represents a routing message containing