Vendor dependencies with dep

vendor/golang.org/x/net/lif/link.go

@@ -0,0 +1,126 @@
+// Copyright 2016 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 solaris
+
+package lif
+
+import "unsafe"
+
+// A Link represents logical data link information.
+//
+// It also represents base information for logical network interface.
+// On Solaris, each logical network interface represents network layer
+// adjacency information and the interface has a only single network
+// address or address pair for tunneling. It's usual that multiple
+// logical network interfaces share the same logical data link.
+type Link struct {
+	Name  string // name, equivalent to IP interface name
+	Index int    // index, equivalent to IP interface index
+	Type  int    // type
+	Flags int    // flags
+	MTU   int    // maximum transmission unit, basically link MTU but may differ between IP address families
+	Addr  []byte // address
+}
+
+func (ll *Link) fetch(s uintptr) {
+	var lifr lifreq
+	for i := 0; i < len(ll.Name); i++ {
+		lifr.Name[i] = int8(ll.Name[i])
+	}
+	ioc := int64(sysSIOCGLIFINDEX)
+	if err := ioctl(s, uintptr(ioc), unsafe.Pointer(&lifr)); err == nil {
+		ll.Index = int(nativeEndian.Uint32(lifr.Lifru[:4]))
+	}
+	ioc = int64(sysSIOCGLIFFLAGS)
+	if err := ioctl(s, uintptr(ioc), unsafe.Pointer(&lifr)); err == nil {
+		ll.Flags = int(nativeEndian.Uint64(lifr.Lifru[:8]))
+	}
+	ioc = int64(sysSIOCGLIFMTU)
+	if err := ioctl(s, uintptr(ioc), unsafe.Pointer(&lifr)); err == nil {
+		ll.MTU = int(nativeEndian.Uint32(lifr.Lifru[:4]))
+	}
+	switch ll.Type {
+	case sysIFT_IPV4, sysIFT_IPV6, sysIFT_6TO4:
+	default:
+		ioc = int64(sysSIOCGLIFHWADDR)
+		if err := ioctl(s, uintptr(ioc), unsafe.Pointer(&lifr)); err == nil {
+			ll.Addr, _ = parseLinkAddr(lifr.Lifru[4:])
+		}
+	}
+}
+
+// Links returns a list of logical data links.
+//
+// The provided af must be an address family and name must be a data
+// link name. The zero value of af or name means a wildcard.
+func Links(af int, name string) ([]Link, error) {
+	eps, err := newEndpoints(af)
+	if len(eps) == 0 {
+		return nil, err
+	}
+	defer func() {
+		for _, ep := range eps {
+			ep.close()
+		}
+	}()
+	return links(eps, name)
+}
+
+func links(eps []endpoint, name string) ([]Link, error) {
+	var lls []Link
+	lifn := lifnum{Flags: sysLIFC_NOXMIT | sysLIFC_TEMPORARY | sysLIFC_ALLZONES | sysLIFC_UNDER_IPMP}
+	lifc := lifconf{Flags: sysLIFC_NOXMIT | sysLIFC_TEMPORARY | sysLIFC_ALLZONES | sysLIFC_UNDER_IPMP}
+	for _, ep := range eps {
+		lifn.Family = uint16(ep.af)
+		ioc := int64(sysSIOCGLIFNUM)
+		if err := ioctl(ep.s, uintptr(ioc), unsafe.Pointer(&lifn)); err != nil {
+			continue
+		}
+		if lifn.Count == 0 {
+			continue
+		}
+		b := make([]byte, lifn.Count*sizeofLifreq)
+		lifc.Family = uint16(ep.af)
+		lifc.Len = lifn.Count * sizeofLifreq
+		if len(lifc.Lifcu) == 8 {
+			nativeEndian.PutUint64(lifc.Lifcu[:], uint64(uintptr(unsafe.Pointer(&b[0]))))
+		} else {
+			nativeEndian.PutUint32(lifc.Lifcu[:], uint32(uintptr(unsafe.Pointer(&b[0]))))
+		}
+		ioc = int64(sysSIOCGLIFCONF)
+		if err := ioctl(ep.s, uintptr(ioc), unsafe.Pointer(&lifc)); err != nil {
+			continue
+		}
+		nb := make([]byte, 32) // see LIFNAMSIZ in net/if.h
+		for i := 0; i < int(lifn.Count); i++ {
+			lifr := (*lifreq)(unsafe.Pointer(&b[i*sizeofLifreq]))
+			for i := 0; i < 32; i++ {
+				if lifr.Name[i] == 0 {
+					nb = nb[:i]
+					break
+				}
+				nb[i] = byte(lifr.Name[i])
+			}
+			llname := string(nb)
+			nb = nb[:32]
+			if isDupLink(lls, llname) || name != "" && name != llname {
+				continue
+			}
+			ll := Link{Name: llname, Type: int(lifr.Type)}
+			ll.fetch(ep.s)
+			lls = append(lls, ll)
+		}
+	}
+	return lls, nil
+}
+
+func isDupLink(lls []Link, name string) bool {
+	for _, ll := range lls {
+		if ll.Name == name {
+			return true
+		}
+	}
+	return false
+}