62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
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// Copyright 2016 The Periph Authors. All rights reserved.
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// Use of this source code is governed under the Apache License, Version 2.0
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// that can be found in the LICENSE file.
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package distro
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// DTModel returns platform model info from the Linux device tree (/proc/device-tree/model), and
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// returns "unknown" on non-linux systems or if the file is missing.
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func DTModel() string {
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mu.Lock()
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defer mu.Unlock()
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if dtModel == "" {
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dtModel = "<unknown>"
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if isLinux {
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dtModel = makeDTModelLinux()
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}
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}
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return dtModel
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}
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// DTCompatible returns platform compatibility info from the Linux device tree
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// (/proc/device-tree/compatible), and returns []{"unknown"} on non-linux systems or if the file is
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// missing.
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func DTCompatible() []string {
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mu.Lock()
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defer mu.Unlock()
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if dtCompatible == nil {
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dtCompatible = []string{}
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if isLinux {
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dtCompatible = makeDTCompatible()
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}
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}
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return dtCompatible
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}
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//
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var (
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dtModel string // cached /proc/device-tree/model
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dtCompatible []string // cached /proc/device-tree/compatible
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)
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func makeDTModelLinux() string {
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// Read model from device tree.
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if bytes, err := readFile("/proc/device-tree/model"); err == nil {
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if model := splitNull(bytes); len(model) > 0 {
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return model[0]
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}
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}
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return "<unknown>"
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}
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func makeDTCompatible() []string {
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// Read compatible from device tree.
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if bytes, err := readFile("/proc/device-tree/compatible"); err == nil {
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return splitNull(bytes)
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}
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return []string{}
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}
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