mirror of
https://github.com/golang/net.git
synced 2026-03-31 02:17:08 +09:00
5f55cee0dc
Make all our package sources use Go 1.17 gofmt format (adding //go:build lines). Not strictly necessary but will avoid spurious changes as files are edited. Part of //go:build change (#41184). See https://golang.org/design/draft-gobuild Change-Id: I5b2b7d93424e828a3c5f76ae3f30ab825aca388e Reviewed-on: https://go-review.googlesource.com/c/net/+/294371 Trust: Russ Cox <rsc@golang.org> Run-TryBot: Russ Cox <rsc@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com> Reviewed-by: Ian Lance Taylor <iant@golang.org>
43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
// Copyright 2012 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 aix || darwin || dragonfly || freebsd || netbsd || openbsd
|
|
// +build aix darwin dragonfly freebsd netbsd openbsd
|
|
|
|
package ipv4
|
|
|
|
import (
|
|
"net"
|
|
"syscall"
|
|
"unsafe"
|
|
|
|
"golang.org/x/net/internal/iana"
|
|
"golang.org/x/net/internal/socket"
|
|
)
|
|
|
|
func marshalDst(b []byte, cm *ControlMessage) []byte {
|
|
m := socket.ControlMessage(b)
|
|
m.MarshalHeader(iana.ProtocolIP, sysIP_RECVDSTADDR, net.IPv4len)
|
|
return m.Next(net.IPv4len)
|
|
}
|
|
|
|
func parseDst(cm *ControlMessage, b []byte) {
|
|
if len(cm.Dst) < net.IPv4len {
|
|
cm.Dst = make(net.IP, net.IPv4len)
|
|
}
|
|
copy(cm.Dst, b[:net.IPv4len])
|
|
}
|
|
|
|
func marshalInterface(b []byte, cm *ControlMessage) []byte {
|
|
m := socket.ControlMessage(b)
|
|
m.MarshalHeader(iana.ProtocolIP, sysIP_RECVIF, syscall.SizeofSockaddrDatalink)
|
|
return m.Next(syscall.SizeofSockaddrDatalink)
|
|
}
|
|
|
|
func parseInterface(cm *ControlMessage, b []byte) {
|
|
var sadl syscall.SockaddrDatalink
|
|
copy((*[unsafe.Sizeof(sadl)]byte)(unsafe.Pointer(&sadl))[:], b)
|
|
cm.IfIndex = int(sadl.Index)
|
|
}
|