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// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
//go:build linux || freebsd || openbsd || darwin
package hostinfo
import (
func init() {
unameMachine = lazyUnameMachine.Get
var lazyUnameMachine = &lazyAtomicValue[string]{f: ptr.To(unameMachineUnix)}
func unameMachineUnix() string {
switch runtime.GOOS {
case "android":
// Don't call on Android for now. We're late in the 1.36 release cycle
// and don't want to test syscall filters on various Android versions to
// see what's permitted. Notably, the hostinfo_linux.go file has build
// tag !android, so maybe Uname is verboten.
return ""
case "ios":
// For similar reasons, don't call on iOS. There aren't many iOS devices
// and we know their CPU properties so calling this is only risk and no
// reward.
return ""
var un unix.Utsname
return unix.ByteSliceToString(un.Machine[:])