69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
|
// Copyright 2012 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.
|
||
|
|
|
||
|
|
package ipv4
|
||
|
|
|
||
|
|
import (
|
||
|
|
"net"
|
||
|
|
"os"
|
||
|
|
"syscall"
|
||
|
|
"unsafe"
|
||
|
|
|
||
|
|
"golang.org/x/net/internal/iana"
|
||
|
|
)
|
||
|
|
|
||
|
|
func getInt(fd syscall.Handle, opt *sockOpt) (int, error) {
|
||
|
|
if opt.name < 1 || opt.typ != ssoTypeInt {
|
||
|
|
return 0, errOpNoSupport
|
||
|
|
}
|
||
|
|
var i int32
|
||
|
|
l := int32(4)
|
||
|
|
if err := syscall.Getsockopt(fd, iana.ProtocolIP, int32(opt.name), (*byte)(unsafe.Pointer(&i)), &l); err != nil {
|
||
|
|
return 0, os.NewSyscallError("getsockopt", err)
|
||
|
|
}
|
||
|
|
return int(i), nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func setInt(fd syscall.Handle, opt *sockOpt, v int) error {
|
||
|
|
if opt.name < 1 || opt.typ != ssoTypeInt {
|
||
|
|
return errOpNoSupport
|
||
|
|
}
|
||
|
|
i := int32(v)
|
||
|
|
return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, iana.ProtocolIP, int32(opt.name), (*byte)(unsafe.Pointer(&i)), 4))
|
||
|
|
}
|
||
|
|
|
||
|
|
func getInterface(fd syscall.Handle, opt *sockOpt) (*net.Interface, error) {
|
||
|
|
if opt.name < 1 || opt.typ != ssoTypeInterface {
|
||
|
|
return nil, errOpNoSupport
|
||
|
|
}
|
||
|
|
return getsockoptInterface(fd, opt.name)
|
||
|
|
}
|
||
|
|
|
||
|
|
func setInterface(fd syscall.Handle, opt *sockOpt, ifi *net.Interface) error {
|
||
|
|
if opt.name < 1 || opt.typ != ssoTypeInterface {
|
||
|
|
return errOpNoSupport
|
||
|
|
}
|
||
|
|
return setsockoptInterface(fd, opt.name, ifi)
|
||
|
|
}
|
||
|
|
|
||
|
|
func getICMPFilter(fd syscall.Handle, opt *sockOpt) (*ICMPFilter, error) {
|
||
|
|
return nil, errOpNoSupport
|
||
|
|
}
|
||
|
|
|
||
|
|
func setICMPFilter(fd syscall.Handle, opt *sockOpt, f *ICMPFilter) error {
|
||
|
|
return errOpNoSupport
|
||
|
|
}
|
||
|
|
|
||
|
|
func setGroup(fd syscall.Handle, opt *sockOpt, ifi *net.Interface, grp net.IP) error {
|
||
|
|
if opt.name < 1 || opt.typ != ssoTypeIPMreq {
|
||
|
|
return errOpNoSupport
|
||
|
|
}
|
||
|
|
return setsockoptIPMreq(fd, opt.name, ifi, grp)
|
||
|
|
}
|
||
|
|
|
||
|
|
func setSourceGroup(fd syscall.Handle, opt *sockOpt, ifi *net.Interface, grp, src net.IP) error {
|
||
|
|
// TODO(mikio): implement this
|
||
|
|
return errOpNoSupport
|
||
|
|
}
|