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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.
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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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//go:build darwin || freebsd || linux
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package ipv4
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import (
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"net"
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"unsafe"
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"golang.org/x/net/internal/socket"
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"golang.org/x/sys/unix"
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)
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func (so *sockOpt) getIPMreqn(c *socket.Conn) (*net.Interface, error) {
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b := make([]byte, so.Len)
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if _, err := so.Get(c, b); err != nil {
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return nil, err
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}
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mreqn := (*unix.IPMreqn)(unsafe.Pointer(&b[0]))
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if mreqn.Ifindex == 0 {
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return nil, nil
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}
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ifi, err := net.InterfaceByIndex(int(mreqn.Ifindex))
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if err != nil {
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return nil, err
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}
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return ifi, nil
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}
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func (so *sockOpt) setIPMreqn(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
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var mreqn unix.IPMreqn
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if ifi != nil {
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mreqn.Ifindex = int32(ifi.Index)
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}
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if grp != nil {
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mreqn.Multiaddr = [4]byte{grp[0], grp[1], grp[2], grp[3]}
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}
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b := (*[unix.SizeofIPMreqn]byte)(unsafe.Pointer(&mreqn))[:unix.SizeofIPMreqn]
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return so.Set(c, b)
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}
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