69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package ipv4
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import (
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"net"
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"os"
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"syscall"
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"unsafe"
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"golang.org/x/net/internal/iana"
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)
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func getInt(fd syscall.Handle, opt *sockOpt) (int, error) {
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if opt.name < 1 || opt.typ != ssoTypeInt {
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return 0, errOpNoSupport
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}
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var i int32
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l := int32(4)
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if err := syscall.Getsockopt(fd, iana.ProtocolIP, int32(opt.name), (*byte)(unsafe.Pointer(&i)), &l); err != nil {
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return 0, os.NewSyscallError("getsockopt", err)
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}
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return int(i), nil
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}
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func setInt(fd syscall.Handle, opt *sockOpt, v int) error {
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if opt.name < 1 || opt.typ != ssoTypeInt {
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return errOpNoSupport
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}
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i := int32(v)
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return os.NewSyscallError("setsockopt", syscall.Setsockopt(fd, iana.ProtocolIP, int32(opt.name), (*byte)(unsafe.Pointer(&i)), 4))
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}
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func getInterface(fd syscall.Handle, opt *sockOpt) (*net.Interface, error) {
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if opt.name < 1 || opt.typ != ssoTypeInterface {
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return nil, errOpNoSupport
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}
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return getsockoptInterface(fd, opt.name)
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}
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func setInterface(fd syscall.Handle, opt *sockOpt, ifi *net.Interface) error {
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if opt.name < 1 || opt.typ != ssoTypeInterface {
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return errOpNoSupport
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}
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return setsockoptInterface(fd, opt.name, ifi)
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}
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func getICMPFilter(fd syscall.Handle, opt *sockOpt) (*ICMPFilter, error) {
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return nil, errOpNoSupport
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}
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func setICMPFilter(fd syscall.Handle, opt *sockOpt, f *ICMPFilter) error {
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return errOpNoSupport
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}
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func setGroup(fd syscall.Handle, opt *sockOpt, ifi *net.Interface, grp net.IP) error {
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if opt.name < 1 || opt.typ != ssoTypeIPMreq {
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return errOpNoSupport
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}
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return setsockoptIPMreq(fd, opt.name, ifi, grp)
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}
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func setSourceGroup(fd syscall.Handle, opt *sockOpt, ifi *net.Interface, grp, src net.IP) error {
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// TODO(mikio): implement this
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return errOpNoSupport
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}
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