mirror of
https://github.com/golang/net.git
synced 2026-03-31 10:27:08 +09:00
d23d9bc549
Done with: go get go@1.18 go mod tidy go fix ./... Using go1.21.3. With a manual change to keep golang.org/x/net/context testing itself, not context in the standard library. For golang/go#60268. Change-Id: I00682bf7cf1e3ba4370e2a3e7f63dc245b294a36 Reviewed-on: https://go-review.googlesource.com/c/net/+/534241 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Damien Neil <dneil@google.com> Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
45 lines
1020 B
Go
45 lines
1020 B
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.
|
|
|
|
//go:build darwin || freebsd || linux
|
|
|
|
package ipv4
|
|
|
|
import (
|
|
"net"
|
|
"unsafe"
|
|
|
|
"golang.org/x/net/internal/socket"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
func (so *sockOpt) getIPMreqn(c *socket.Conn) (*net.Interface, error) {
|
|
b := make([]byte, so.Len)
|
|
if _, err := so.Get(c, b); err != nil {
|
|
return nil, err
|
|
}
|
|
mreqn := (*unix.IPMreqn)(unsafe.Pointer(&b[0]))
|
|
if mreqn.Ifindex == 0 {
|
|
return nil, nil
|
|
}
|
|
ifi, err := net.InterfaceByIndex(int(mreqn.Ifindex))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return ifi, nil
|
|
}
|
|
|
|
func (so *sockOpt) setIPMreqn(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
|
|
var mreqn unix.IPMreqn
|
|
if ifi != nil {
|
|
mreqn.Ifindex = int32(ifi.Index)
|
|
}
|
|
if grp != nil {
|
|
mreqn.Multiaddr = [4]byte{grp[0], grp[1], grp[2], grp[3]}
|
|
}
|
|
b := (*[unix.SizeofIPMreqn]byte)(unsafe.Pointer(&mreqn))[:unix.SizeofIPMreqn]
|
|
return so.Set(c, b)
|
|
}
|