mirror of
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40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
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// Copyright (c) 2023 Tailscale Inc & 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 linux || freebsd || openbsd || darwin
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package hostinfo
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import (
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"runtime"
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"golang.org/x/sys/unix"
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"tailscale.com/types/ptr"
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)
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func init() {
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unameMachine = lazyUnameMachine.Get
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}
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var lazyUnameMachine = &lazyAtomicValue[string]{f: ptr.To(unameMachineUnix)}
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func unameMachineUnix() string {
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switch runtime.GOOS {
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case "android":
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// Don't call on Android for now. We're late in the 1.36 release cycle
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// and don't want to test syscall filters on various Android versions to
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// see what's permitted. Notably, the hostinfo_linux.go file has build
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// tag !android, so maybe Uname is verboten.
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return ""
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case "ios":
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// For similar reasons, don't call on iOS. There aren't many iOS devices
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// and we know their CPU properties so calling this is only risk and no
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// reward.
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return ""
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}
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var un unix.Utsname
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unix.Uname(&un)
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return unix.ByteSliceToString(un.Machine[:])
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}
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