f8d9fa9e80
This upgrades all of libgo other than the runtime package to the Go 1.4 release. In Go 1.4 much of the runtime was rewritten into Go. Merging that code will take more time and will not change the API, so I'm putting it off for now. There are a few runtime changes anyhow, to accomodate other packages that rely on minor modifications to the runtime support. The compiler changes slightly to add a one-bit flag to each type descriptor kind that is stored directly in an interface, which for gccgo is currently only pointer types. Another one-bit flag (gcprog) is reserved because it is used by the gc compiler, but gccgo does not currently use it. There is another error check in the compiler since I ran across it during testing. gotools/: * Makefile.am (go_cmd_go_files): Sort entries. Add generate.go. * Makefile.in: Rebuild. From-SVN: r219627
142 lines
2.8 KiB
Go
142 lines
2.8 KiB
Go
// 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.
|
|
|
|
// +build darwin dragonfly freebsd linux netbsd openbsd solaris windows
|
|
|
|
package net
|
|
|
|
import (
|
|
"os"
|
|
"syscall"
|
|
)
|
|
|
|
// Boolean to int.
|
|
func boolint(b bool) int {
|
|
if b {
|
|
return 1
|
|
}
|
|
return 0
|
|
}
|
|
|
|
func ipv4AddrToInterface(ip IP) (*Interface, error) {
|
|
ift, err := Interfaces()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
for _, ifi := range ift {
|
|
ifat, err := ifi.Addrs()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
for _, ifa := range ifat {
|
|
switch v := ifa.(type) {
|
|
case *IPAddr:
|
|
if ip.Equal(v.IP) {
|
|
return &ifi, nil
|
|
}
|
|
case *IPNet:
|
|
if ip.Equal(v.IP) {
|
|
return &ifi, nil
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if ip.Equal(IPv4zero) {
|
|
return nil, nil
|
|
}
|
|
return nil, errNoSuchInterface
|
|
}
|
|
|
|
func interfaceToIPv4Addr(ifi *Interface) (IP, error) {
|
|
if ifi == nil {
|
|
return IPv4zero, nil
|
|
}
|
|
ifat, err := ifi.Addrs()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
for _, ifa := range ifat {
|
|
switch v := ifa.(type) {
|
|
case *IPAddr:
|
|
if v.IP.To4() != nil {
|
|
return v.IP, nil
|
|
}
|
|
case *IPNet:
|
|
if v.IP.To4() != nil {
|
|
return v.IP, nil
|
|
}
|
|
}
|
|
}
|
|
return nil, errNoSuchInterface
|
|
}
|
|
|
|
func setIPv4MreqToInterface(mreq *syscall.IPMreq, ifi *Interface) error {
|
|
if ifi == nil {
|
|
return nil
|
|
}
|
|
ifat, err := ifi.Addrs()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, ifa := range ifat {
|
|
switch v := ifa.(type) {
|
|
case *IPAddr:
|
|
if a := v.IP.To4(); a != nil {
|
|
copy(mreq.Interface[:], a)
|
|
goto done
|
|
}
|
|
case *IPNet:
|
|
if a := v.IP.To4(); a != nil {
|
|
copy(mreq.Interface[:], a)
|
|
goto done
|
|
}
|
|
}
|
|
}
|
|
done:
|
|
if bytesEqual(mreq.Multiaddr[:], IPv4zero.To4()) {
|
|
return errNoSuchMulticastInterface
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func setReadBuffer(fd *netFD, bytes int) error {
|
|
if err := fd.incref(); err != nil {
|
|
return err
|
|
}
|
|
defer fd.decref()
|
|
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.SOL_SOCKET, syscall.SO_RCVBUF, bytes))
|
|
}
|
|
|
|
func setWriteBuffer(fd *netFD, bytes int) error {
|
|
if err := fd.incref(); err != nil {
|
|
return err
|
|
}
|
|
defer fd.decref()
|
|
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.SOL_SOCKET, syscall.SO_SNDBUF, bytes))
|
|
}
|
|
|
|
func setKeepAlive(fd *netFD, keepalive bool) error {
|
|
if err := fd.incref(); err != nil {
|
|
return err
|
|
}
|
|
defer fd.decref()
|
|
return os.NewSyscallError("setsockopt", syscall.SetsockoptInt(fd.sysfd, syscall.SOL_SOCKET, syscall.SO_KEEPALIVE, boolint(keepalive)))
|
|
}
|
|
|
|
func setLinger(fd *netFD, sec int) error {
|
|
var l syscall.Linger
|
|
if sec >= 0 {
|
|
l.Onoff = 1
|
|
l.Linger = int32(sec)
|
|
} else {
|
|
l.Onoff = 0
|
|
l.Linger = 0
|
|
}
|
|
if err := fd.incref(); err != nil {
|
|
return err
|
|
}
|
|
defer fd.decref()
|
|
return os.NewSyscallError("setsockopt", syscall.SetsockoptLinger(fd.sysfd, syscall.SOL_SOCKET, syscall.SO_LINGER, &l))
|
|
}
|