mirror of https://github.com/tidwall/tile38.git
127 lines
3.6 KiB
Go
127 lines
3.6 KiB
Go
// 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
|
|
}
|