1 files changed, 0 insertions, 228 deletions
diff --git a/src/pkg/net/ipsock_plan9.go b/src/pkg/net/ipsock_plan9.go
deleted file mode 100644
index 94ceea31b..000000000
--- a/src/pkg/net/ipsock_plan9.go
+++ /dev/null
@@ -1,228 +0,0 @@
-// Copyright 2009 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.
-
-// Internet protocol family sockets for Plan 9
-
-package net
-
-import (
-	"errors"
-	"os"
-	"syscall"
-)
-
-func probe(filename, query string) bool {
-	var file *file
-	var err error
-	if file, err = open(filename); err != nil {
-		return false
-	}
-
-	r := false
-	for line, ok := file.readLine(); ok && !r; line, ok = file.readLine() {
-		f := getFields(line)
-		if len(f) < 3 {
-			continue
-		}
-		for i := 0; i < len(f); i++ {
-			if query == f[i] {
-				r = true
-				break
-			}
-		}
-	}
-	file.close()
-	return r
-}
-
-func probeIPv4Stack() bool {
-	return probe(netdir+"/iproute", "4i")
-}
-
-// probeIPv6Stack returns two boolean values.  If the first boolean
-// value is true, kernel supports basic IPv6 functionality.  If the
-// second boolean value is true, kernel supports IPv6 IPv4-mapping.
-func probeIPv6Stack() (supportsIPv6, supportsIPv4map bool) {
-	// Plan 9 uses IPv6 natively, see ip(3).
-	r := probe(netdir+"/iproute", "6i")
-	v := false
-	if r {
-		v = probe(netdir+"/iproute", "4i")
-	}
-	return r, v
-}
-
-// parsePlan9Addr parses address of the form [ip!]port (e.g. 127.0.0.1!80).
-func parsePlan9Addr(s string) (ip IP, iport int, err error) {
-	addr := IPv4zero // address contains port only
-	i := byteIndex(s, '!')
-	if i >= 0 {
-		addr = ParseIP(s[:i])
-		if addr == nil {
-			return nil, 0, errors.New("parsing IP failed")
-		}
-	}
-	p, _, ok := dtoi(s[i+1:], 0)
-	if !ok {
-		return nil, 0, errors.New("parsing port failed")
-	}
-	if p < 0 || p > 0xFFFF {
-		return nil, 0, &AddrError{"invalid port", string(p)}
-	}
-	return addr, p, nil
-}
-
-func readPlan9Addr(proto, filename string) (addr Addr, err error) {
-	var buf [128]byte
-
-	f, err := os.Open(filename)
-	if err != nil {
-		return
-	}
-	defer f.Close()
-	n, err := f.Read(buf[:])
-	if err != nil {
-		return
-	}
-	ip, port, err := parsePlan9Addr(string(buf[:n]))
-	if err != nil {
-		return
-	}
-	switch proto {
-	case "tcp":
-		addr = &TCPAddr{IP: ip, Port: port}
-	case "udp":
-		addr = &UDPAddr{IP: ip, Port: port}
-	default:
-		return nil, errors.New("unknown protocol " + proto)
-	}
-	return addr, nil
-}
-
-func startPlan9(net string, addr Addr) (ctl *os.File, dest, proto, name string, err error) {
-	var (
-		ip   IP
-		port int
-	)
-	switch a := addr.(type) {
-	case *TCPAddr:
-		proto = "tcp"
-		ip = a.IP
-		port = a.Port
-	case *UDPAddr:
-		proto = "udp"
-		ip = a.IP
-		port = a.Port
-	default:
-		err = UnknownNetworkError(net)
-		return
-	}
-
-	clone, dest, err := queryCS1(proto, ip, port)
-	if err != nil {
-		return
-	}
-	f, err := os.OpenFile(clone, os.O_RDWR, 0)
-	if err != nil {
-		return
-	}
-	var buf [16]byte
-	n, err := f.Read(buf[:])
-	if err != nil {
-		f.Close()
-		return
-	}
-	return f, dest, proto, string(buf[:n]), nil
-}
-
-func netErr(e error) {
-	oe, ok := e.(*OpError)
-	if !ok {
-		return
-	}
-	if pe, ok := oe.Err.(*os.PathError); ok {
-		if _, ok = pe.Err.(syscall.ErrorString); ok {
-			oe.Err = pe.Err
-		}
-	}
-}
-
-func dialPlan9(net string, laddr, raddr Addr) (fd *netFD, err error) {
-	defer func() { netErr(err) }()
-	f, dest, proto, name, err := startPlan9(net, raddr)
-	if err != nil {
-		return nil, &OpError{"dial", net, raddr, err}
-	}
-	_, err = f.WriteString("connect " + dest)
-	if err != nil {
-		f.Close()
-		return nil, &OpError{"dial", f.Name(), raddr, err}
-	}
-	data, err := os.OpenFile(netdir+"/"+proto+"/"+name+"/data", os.O_RDWR, 0)
-	if err != nil {
-		f.Close()
-		return nil, &OpError{"dial", net, raddr, err}
-	}
-	laddr, err = readPlan9Addr(proto, netdir+"/"+proto+"/"+name+"/local")
-	if err != nil {
-		data.Close()
-		f.Close()
-		return nil, &OpError{"dial", proto, raddr, err}
-	}
-	return newFD(proto, name, f, data, laddr, raddr)
-}
-
-func listenPlan9(net string, laddr Addr) (fd *netFD, err error) {
-	defer func() { netErr(err) }()
-	f, dest, proto, name, err := startPlan9(net, laddr)
-	if err != nil {
-		return nil, &OpError{"listen", net, laddr, err}
-	}
-	_, err = f.WriteString("announce " + dest)
-	if err != nil {
-		f.Close()
-		return nil, &OpError{"announce", proto, laddr, err}
-	}
-	laddr, err = readPlan9Addr(proto, netdir+"/"+proto+"/"+name+"/local")
-	if err != nil {
-		f.Close()
-		return nil, &OpError{Op: "listen", Net: net, Err: err}
-	}
-	return newFD(proto, name, f, nil, laddr, nil)
-}
-
-func (l *netFD) netFD() (*netFD, error) {
-	return newFD(l.proto, l.n, l.ctl, l.data, l.laddr, l.raddr)
-}
-
-func (l *netFD) acceptPlan9() (fd *netFD, err error) {
-	defer func() { netErr(err) }()
-	if err := l.readLock(); err != nil {
-		return nil, err
-	}
-	defer l.readUnlock()
-	f, err := os.Open(l.dir + "/listen")
-	if err != nil {
-		return nil, &OpError{"accept", l.dir + "/listen", l.laddr, err}
-	}
-	var buf [16]byte
-	n, err := f.Read(buf[:])
-	if err != nil {
-		f.Close()
-		return nil, &OpError{"accept", l.dir + "/listen", l.laddr, err}
-	}
-	name := string(buf[:n])
-	data, err := os.OpenFile(netdir+"/"+l.proto+"/"+name+"/data", os.O_RDWR, 0)
-	if err != nil {
-		f.Close()
-		return nil, &OpError{"accept", l.proto, l.laddr, err}
-	}
-	raddr, err := readPlan9Addr(l.proto, netdir+"/"+l.proto+"/"+name+"/remote")
-	if err != nil {
-		data.Close()
-		f.Close()
-		return nil, &OpError{"accept", l.proto, l.laddr, err}
-	}
-	return newFD(l.proto, name, f, data, l.laddr, raddr)
-}