diff options
Diffstat (limited to 'src/net/interface_bsd.go')
| -rw-r--r-- | src/net/interface_bsd.go | 81 |
1 files changed, 37 insertions, 44 deletions
diff --git a/src/net/interface_bsd.go b/src/net/interface_bsd.go index 16775579d0..2f66e4fc31 100644 --- a/src/net/interface_bsd.go +++ b/src/net/interface_bsd.go @@ -54,24 +54,22 @@ func newLink(m *syscall.InterfaceMessage) (*Interface, error) { return nil, os.NewSyscallError("route sockaddr", err) } ifi := &Interface{Index: int(m.Header.Index), Flags: linkFlags(m.Header.Flags)} - for _, sa := range sas { - switch sa := sa.(type) { - case *syscall.SockaddrDatalink: - // NOTE: SockaddrDatalink.Data is minimum work area, - // can be larger. - m.Data = m.Data[unsafe.Offsetof(sa.Data):] - var name [syscall.IFNAMSIZ]byte - for i := 0; i < int(sa.Nlen); i++ { - name[i] = byte(m.Data[i]) - } - ifi.Name = string(name[:sa.Nlen]) - ifi.MTU = int(m.Header.Data.Mtu) - addr := make([]byte, sa.Alen) - for i := 0; i < int(sa.Alen); i++ { - addr[i] = byte(m.Data[int(sa.Nlen)+i]) - } - ifi.HardwareAddr = addr[:sa.Alen] + sa, _ := sas[syscall.RTAX_IFP].(*syscall.SockaddrDatalink) + if sa != nil { + // NOTE: SockaddrDatalink.Data is minimum work area, + // can be larger. + m.Data = m.Data[unsafe.Offsetof(sa.Data):] + var name [syscall.IFNAMSIZ]byte + for i := 0; i < int(sa.Nlen); i++ { + name[i] = byte(m.Data[i]) } + ifi.Name = string(name[:sa.Nlen]) + ifi.MTU = int(m.Header.Data.Mtu) + addr := make([]byte, sa.Alen) + for i := 0; i < int(sa.Alen); i++ { + addr[i] = byte(m.Data[int(sa.Nlen)+i]) + } + ifi.HardwareAddr = addr[:sa.Alen] } return ifi, nil } @@ -144,39 +142,34 @@ func interfaceAddrTable(ifi *Interface) ([]Addr, error) { return ifat, nil } -func newAddr(ifi *Interface, m *syscall.InterfaceAddrMessage) (Addr, error) { +func newAddr(ifi *Interface, m *syscall.InterfaceAddrMessage) (*IPNet, error) { sas, err := syscall.ParseRoutingSockaddr(m) if err != nil { return nil, os.NewSyscallError("route sockaddr", err) } ifa := &IPNet{} - for i, sa := range sas { - switch sa := sa.(type) { - case *syscall.SockaddrInet4: - switch i { - case 0: - ifa.Mask = IPv4Mask(sa.Addr[0], sa.Addr[1], sa.Addr[2], sa.Addr[3]) - case 1: - ifa.IP = IPv4(sa.Addr[0], sa.Addr[1], sa.Addr[2], sa.Addr[3]) - } - case *syscall.SockaddrInet6: - switch i { - case 0: - ifa.Mask = make(IPMask, IPv6len) - copy(ifa.Mask, sa.Addr[:]) - case 1: - ifa.IP = make(IP, IPv6len) - copy(ifa.IP, sa.Addr[:]) - // NOTE: KAME based IPv6 protcol stack usually embeds - // the interface index in the interface-local or link- - // local address as the kernel-internal form. - if ifa.IP.IsLinkLocalUnicast() { - ifa.IP[2], ifa.IP[3] = 0, 0 - } - } - default: // Sockaddrs contain syscall.SockaddrDatalink on NetBSD - return nil, nil + switch sa := sas[syscall.RTAX_NETMASK].(type) { + case *syscall.SockaddrInet4: + ifa.Mask = IPv4Mask(sa.Addr[0], sa.Addr[1], sa.Addr[2], sa.Addr[3]) + case *syscall.SockaddrInet6: + ifa.Mask = make(IPMask, IPv6len) + copy(ifa.Mask, sa.Addr[:]) + } + switch sa := sas[syscall.RTAX_IFA].(type) { + case *syscall.SockaddrInet4: + ifa.IP = IPv4(sa.Addr[0], sa.Addr[1], sa.Addr[2], sa.Addr[3]) + case *syscall.SockaddrInet6: + ifa.IP = make(IP, IPv6len) + copy(ifa.IP, sa.Addr[:]) + // NOTE: KAME based IPv6 protcol stack usually embeds + // the interface index in the interface-local or + // link-local address as the kernel-internal form. + if ifa.IP.IsLinkLocalUnicast() { + ifa.IP[2], ifa.IP[3] = 0, 0 } } + if ifa.IP == nil || ifa.Mask == nil { + return nil, nil // Sockaddrs contain syscall.SockaddrDatalink on NetBSD + } return ifa, nil } |