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// Copyright 2014 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 aix darwin freebsd linux solaris zos
package ipv6
import (
"net"
"unsafe"
"golang.org/x/net/internal/socket"
)
var compatFreeBSD32 bool // 386 emulation on amd64
func (so *sockOpt) setGroupReq(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
var gr groupReq
if ifi != nil {
gr.Interface = uint32(ifi.Index)
}
gr.setGroup(grp)
var b []byte
if compatFreeBSD32 {
var d [sizeofGroupReq + 4]byte
s := (*[sizeofGroupReq]byte)(unsafe.Pointer(&gr))
copy(d[:4], s[:4])
copy(d[8:], s[4:])
b = d[:]
} else {
b = (*[sizeofGroupReq]byte)(unsafe.Pointer(&gr))[:sizeofGroupReq]
}
return so.Set(c, b)
}
func (so *sockOpt) setGroupSourceReq(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error {
var gsr groupSourceReq
if ifi != nil {
gsr.Interface = uint32(ifi.Index)
}
gsr.setSourceGroup(grp, src)
var b []byte
if compatFreeBSD32 {
var d [sizeofGroupSourceReq + 4]byte
s := (*[sizeofGroupSourceReq]byte)(unsafe.Pointer(&gsr))
copy(d[:4], s[:4])
copy(d[8:], s[4:])
b = d[:]
} else {
b = (*[sizeofGroupSourceReq]byte)(unsafe.Pointer(&gsr))[:sizeofGroupSourceReq]
}
return so.Set(c, b)
}
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