forked from mystiq/dex
61 lines
1.5 KiB
Go
61 lines
1.5 KiB
Go
// 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 darwin freebsd linux
|
|
|
|
package ipv4
|
|
|
|
import (
|
|
"net"
|
|
"os"
|
|
"unsafe"
|
|
|
|
"golang.org/x/net/internal/iana"
|
|
)
|
|
|
|
var freebsd32o64 bool
|
|
|
|
func setsockoptGroupReq(fd, name int, ifi *net.Interface, grp net.IP) error {
|
|
var gr sysGroupReq
|
|
if ifi != nil {
|
|
gr.Interface = uint32(ifi.Index)
|
|
}
|
|
gr.setGroup(grp)
|
|
var p unsafe.Pointer
|
|
var l uint32
|
|
if freebsd32o64 {
|
|
var d [sysSizeofGroupReq + 4]byte
|
|
s := (*[sysSizeofGroupReq]byte)(unsafe.Pointer(&gr))
|
|
copy(d[:4], s[:4])
|
|
copy(d[8:], s[4:])
|
|
p = unsafe.Pointer(&d[0])
|
|
l = sysSizeofGroupReq + 4
|
|
} else {
|
|
p = unsafe.Pointer(&gr)
|
|
l = sysSizeofGroupReq
|
|
}
|
|
return os.NewSyscallError("setsockopt", setsockopt(fd, iana.ProtocolIP, name, p, l))
|
|
}
|
|
|
|
func setsockoptGroupSourceReq(fd, name int, ifi *net.Interface, grp, src net.IP) error {
|
|
var gsr sysGroupSourceReq
|
|
if ifi != nil {
|
|
gsr.Interface = uint32(ifi.Index)
|
|
}
|
|
gsr.setSourceGroup(grp, src)
|
|
var p unsafe.Pointer
|
|
var l uint32
|
|
if freebsd32o64 {
|
|
var d [sysSizeofGroupSourceReq + 4]byte
|
|
s := (*[sysSizeofGroupSourceReq]byte)(unsafe.Pointer(&gsr))
|
|
copy(d[:4], s[:4])
|
|
copy(d[8:], s[4:])
|
|
p = unsafe.Pointer(&d[0])
|
|
l = sysSizeofGroupSourceReq + 4
|
|
} else {
|
|
p = unsafe.Pointer(&gsr)
|
|
l = sysSizeofGroupSourceReq
|
|
}
|
|
return os.NewSyscallError("setsockopt", setsockopt(fd, iana.ProtocolIP, name, p, l))
|
|
}
|