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469c30c33b
Fixes #4060 Change-Id: I5f145d4f56f6edb14825268e858d419c55918673 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
112 lines
2.4 KiB
Go
112 lines
2.4 KiB
Go
// Copyright (c) 2020 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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// Package distro reports which distro we're running on.
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package distro
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import (
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"os"
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"runtime"
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"strconv"
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"sync/atomic"
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)
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type Distro string
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const (
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Debian = Distro("debian")
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Arch = Distro("arch")
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Synology = Distro("synology")
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OpenWrt = Distro("openwrt")
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NixOS = Distro("nixos")
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QNAP = Distro("qnap")
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Pfsense = Distro("pfsense")
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OPNsense = Distro("opnsense")
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TrueNAS = Distro("truenas")
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Gokrazy = Distro("gokrazy")
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WDMyCloud = Distro("wdmycloud")
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)
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var distroAtomic atomic.Value // of Distro
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// Get returns the current distro, or the empty string if unknown.
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func Get() Distro {
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d, ok := distroAtomic.Load().(Distro)
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if ok {
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return d
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}
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switch runtime.GOOS {
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case "linux":
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d = linuxDistro()
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case "freebsd":
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d = freebsdDistro()
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}
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distroAtomic.Store(d) // even if empty
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return d
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}
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func have(file string) bool {
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_, err := os.Stat(file)
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return err == nil
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}
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func haveDir(file string) bool {
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fi, err := os.Stat(file)
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return err == nil && fi.IsDir()
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}
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func linuxDistro() Distro {
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switch {
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case haveDir("/usr/syno"):
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return Synology
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case have("/usr/local/bin/freenas-debug"):
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// TrueNAS Scale runs on debian
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return TrueNAS
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case have("/etc/debian_version"):
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return Debian
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case have("/etc/arch-release"):
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return Arch
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case have("/etc/openwrt_version"):
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return OpenWrt
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case have("/run/current-system/sw/bin/nixos-version"):
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return NixOS
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case have("/etc/config/uLinux.conf"):
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return QNAP
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case haveDir("/gokrazy"):
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return Gokrazy
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case have("/usr/local/wdmcserver/bin/wdmc.xml"): // Western Digital MyCloud OS3
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return WDMyCloud
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case have("/usr/sbin/wd_crontab.sh"): // Western Digital MyCloud OS5
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return WDMyCloud
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}
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return ""
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}
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func freebsdDistro() Distro {
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switch {
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case have("/etc/pfSense-rc"):
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return Pfsense
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case have("/usr/local/sbin/opnsense-shell"):
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return OPNsense
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case have("/usr/local/bin/freenas-debug"):
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// TrueNAS Core runs on FreeBSD
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return TrueNAS
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}
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return ""
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}
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// DSMVersion reports the Synology DSM major version.
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//
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// If not Synology, it reports 0.
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func DSMVersion() int {
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if runtime.GOOS != "linux" {
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return 0
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}
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if Get() != Synology {
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return 0
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}
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v, _ := strconv.Atoi(os.Getenv("SYNOPKG_DSM_VERSION_MAJOR"))
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return v
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}
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