diff options
Diffstat (limited to 'src/pkg/net/interface_bsd.go')
-rw-r--r-- | src/pkg/net/interface_bsd.go | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/src/pkg/net/interface_bsd.go b/src/pkg/net/interface_bsd.go deleted file mode 100644 index 16775579d..000000000 --- a/src/pkg/net/interface_bsd.go +++ /dev/null @@ -1,182 +0,0 @@ -// Copyright 2011 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build darwin dragonfly freebsd netbsd openbsd - -package net - -import ( - "os" - "syscall" - "unsafe" -) - -// If the ifindex is zero, interfaceTable returns mappings of all -// network interfaces. Otherwise it returns a mapping of a specific -// interface. -func interfaceTable(ifindex int) ([]Interface, error) { - tab, err := syscall.RouteRIB(syscall.NET_RT_IFLIST, ifindex) - if err != nil { - return nil, os.NewSyscallError("route rib", err) - } - msgs, err := syscall.ParseRoutingMessage(tab) - if err != nil { - return nil, os.NewSyscallError("route message", err) - } - return parseInterfaceTable(ifindex, msgs) -} - -func parseInterfaceTable(ifindex int, msgs []syscall.RoutingMessage) ([]Interface, error) { - var ift []Interface -loop: - for _, m := range msgs { - switch m := m.(type) { - case *syscall.InterfaceMessage: - if ifindex == 0 || ifindex == int(m.Header.Index) { - ifi, err := newLink(m) - if err != nil { - return nil, err - } - ift = append(ift, *ifi) - if ifindex == int(m.Header.Index) { - break loop - } - } - } - } - return ift, nil -} - -func newLink(m *syscall.InterfaceMessage) (*Interface, error) { - sas, err := syscall.ParseRoutingSockaddr(m) - if err != nil { - 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] - } - } - return ifi, nil -} - -func linkFlags(rawFlags int32) Flags { - var f Flags - if rawFlags&syscall.IFF_UP != 0 { - f |= FlagUp - } - if rawFlags&syscall.IFF_BROADCAST != 0 { - f |= FlagBroadcast - } - if rawFlags&syscall.IFF_LOOPBACK != 0 { - f |= FlagLoopback - } - if rawFlags&syscall.IFF_POINTOPOINT != 0 { - f |= FlagPointToPoint - } - if rawFlags&syscall.IFF_MULTICAST != 0 { - f |= FlagMulticast - } - return f -} - -// If the ifi is nil, interfaceAddrTable returns addresses for all -// network interfaces. Otherwise it returns addresses for a specific -// interface. -func interfaceAddrTable(ifi *Interface) ([]Addr, error) { - index := 0 - if ifi != nil { - index = ifi.Index - } - tab, err := syscall.RouteRIB(syscall.NET_RT_IFLIST, index) - if err != nil { - return nil, os.NewSyscallError("route rib", err) - } - msgs, err := syscall.ParseRoutingMessage(tab) - if err != nil { - return nil, os.NewSyscallError("route message", err) - } - var ift []Interface - if index == 0 { - ift, err = parseInterfaceTable(index, msgs) - if err != nil { - return nil, err - } - } - var ifat []Addr - for _, m := range msgs { - switch m := m.(type) { - case *syscall.InterfaceAddrMessage: - if index == 0 || index == int(m.Header.Index) { - if index == 0 { - var err error - ifi, err = interfaceByIndex(ift, int(m.Header.Index)) - if err != nil { - return nil, err - } - } - ifa, err := newAddr(ifi, m) - if err != nil { - return nil, err - } - if ifa != nil { - ifat = append(ifat, ifa) - } - } - } - } - return ifat, nil -} - -func newAddr(ifi *Interface, m *syscall.InterfaceAddrMessage) (Addr, 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 - } - } - return ifa, nil -} |