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// Copyright 2013 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 windows
package ipv6
import (
"net"
"os"
"unsafe"
)
func getInt(s uintptr, opt *sockOpt) (int, error) {
if opt.name < 1 || opt.typ != ssoTypeInt {
return 0, errOpNoSupport
}
var i int32
l := uint32(4)
if err := getsockopt(s, opt.level, opt.name, unsafe.Pointer(&i), &l); err != nil {
return 0, os.NewSyscallError("getsockopt", err)
}
return int(i), nil
}
func setInt(s uintptr, opt *sockOpt, v int) error {
if opt.name < 1 || opt.typ != ssoTypeInt {
return errOpNoSupport
}
i := int32(v)
return os.NewSyscallError("setsockopt", setsockopt(s, opt.level, opt.name, unsafe.Pointer(&i), 4))
}
func getInterface(s uintptr, opt *sockOpt) (*net.Interface, error) {
if opt.name < 1 || opt.typ != ssoTypeInterface {
return nil, errOpNoSupport
}
var i int32
l := uint32(4)
if err := getsockopt(s, opt.level, opt.name, unsafe.Pointer(&i), &l); err != nil {
return nil, os.NewSyscallError("getsockopt", err)
}
if i == 0 {
return nil, nil
}
ifi, err := net.InterfaceByIndex(int(i))
if err != nil {
return nil, err
}
return ifi, nil
}
func setInterface(s uintptr, opt *sockOpt, ifi *net.Interface) error {
if opt.name < 1 || opt.typ != ssoTypeInterface {
return errOpNoSupport
}
var i int32
if ifi != nil {
i = int32(ifi.Index)
}
return os.NewSyscallError("setsockopt", setsockopt(s, opt.level, opt.name, unsafe.Pointer(&i), 4))
}
func getICMPFilter(s uintptr, opt *sockOpt) (*ICMPFilter, error) {
if opt.name < 1 || opt.typ != ssoTypeICMPFilter {
return nil, errOpNoSupport
}
var f ICMPFilter
l := uint32(sysSizeofICMPv6Filter)
if err := getsockopt(s, opt.level, opt.name, unsafe.Pointer(&f.sysICMPv6Filter), &l); err != nil {
return nil, os.NewSyscallError("getsockopt", err)
}
return &f, nil
}
func setICMPFilter(s uintptr, opt *sockOpt, f *ICMPFilter) error {
if opt.name < 1 || opt.typ != ssoTypeICMPFilter {
return errOpNoSupport
}
return os.NewSyscallError("setsockopt", setsockopt(s, opt.level, opt.name, unsafe.Pointer(&f.sysICMPv6Filter), sysSizeofICMPv6Filter))
}
func getMTUInfo(s uintptr, opt *sockOpt) (*net.Interface, int, error) {
if opt.name < 1 || opt.typ != ssoTypeMTUInfo {
return nil, 0, errOpNoSupport
}
var mi sysIPv6Mtuinfo
l := uint32(sysSizeofIPv6Mtuinfo)
if err := getsockopt(s, opt.level, opt.name, unsafe.Pointer(&mi), &l); err != nil {
return nil, 0, os.NewSyscallError("getsockopt", err)
}
if mi.Addr.Scope_id == 0 {
return nil, int(mi.Mtu), nil
}
ifi, err := net.InterfaceByIndex(int(mi.Addr.Scope_id))
if err != nil {
return nil, 0, err
}
return ifi, int(mi.Mtu), nil
}
func setGroup(s uintptr, opt *sockOpt, ifi *net.Interface, grp net.IP) error {
if opt.name < 1 {
return errOpNoSupport
}
switch opt.typ {
case ssoTypeIPMreq:
return setsockoptIPMreq(s, opt, ifi, grp)
case ssoTypeGroupReq:
return setsockoptGroupReq(s, opt, ifi, grp)
default:
return errOpNoSupport
}
}
func setSourceGroup(s uintptr, opt *sockOpt, ifi *net.Interface, grp, src net.IP) error {
if opt.name < 1 || opt.typ != ssoTypeGroupSourceReq {
return errOpNoSupport
}
return setsockoptGroupSourceReq(s, opt, ifi, grp, src)
}
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