| // 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. |
| |
| //go:build solaris |
| // +build solaris |
| |
| package lif |
| |
| import ( |
| "syscall" |
| "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(syscall.SIOCGLIFINDEX) |
| if err := ioctl(s, uintptr(ioc), unsafe.Pointer(&lifr)); err == nil { |
| ll.Index = int(nativeEndian.Uint32(lifr.Lifru[:4])) |
| } |
| ioc = int64(syscall.SIOCGLIFFLAGS) |
| if err := ioctl(s, uintptr(ioc), unsafe.Pointer(&lifr)); err == nil { |
| ll.Flags = int(nativeEndian.Uint64(lifr.Lifru[:8])) |
| } |
| ioc = int64(syscall.SIOCGLIFMTU) |
| if err := ioctl(s, uintptr(ioc), unsafe.Pointer(&lifr)); err == nil { |
| ll.MTU = int(nativeEndian.Uint32(lifr.Lifru[:4])) |
| } |
| switch ll.Type { |
| case syscall.IFT_IPV4, syscall.IFT_IPV6, syscall.IFT_6TO4: |
| default: |
| ioc = int64(syscall.SIOCGLIFHWADDR) |
| 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(syscall.SIOCGLIFNUM) |
| 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(syscall.SIOCGLIFCONF) |
| 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 |
| } |