// +build !windows /* SPDX-License-Identifier: MIT * * Copyright (C) 2017-2021 WireGuard LLC. All Rights Reserved. */ package tun import ( "fmt" ) func (tun *NativeTun) operateOnFd(fn func(fd uintptr)) { sysconn, err := tun.tunFile.SyscallConn() if err != nil { tun.errors <- fmt.Errorf("unable to find sysconn for tunfile: %s", err.Error()) return } err = sysconn.Control(fn) if err != nil { tun.errors <- fmt.Errorf("unable to control sysconn for tunfile: %s", err.Error()) } }