mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
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755294184c
* fix linter issues for few files * fix linter issue of exported const Name should have comment or be unexported * fix name lint issue and resolve lints * add changes to comments
65 lines
1.6 KiB
Go
65 lines
1.6 KiB
Go
/*
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Copyright 2018-2021 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package iommu
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import (
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"fmt"
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"io/ioutil"
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"sigs.k8s.io/node-feature-discovery/source"
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)
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// Name of this feature source
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const Name = "iommu"
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// iommuSource implements the LabelSource interface.
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type iommuSource struct{}
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func (s *iommuSource) Name() string { return Name }
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// Singleton source instance
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var (
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src iommuSource
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_ source.LabelSource = &src
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)
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// Priority method of the LabelSource interface
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func (s *iommuSource) Priority() int { return 0 }
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// GetLabels method of the LabelSource interface
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func (s *iommuSource) GetLabels() (source.FeatureLabels, error) {
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features := source.FeatureLabels{}
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// Check if any iommu devices are available
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devices, err := ioutil.ReadDir(source.SysfsDir.Path("class/iommu/"))
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if err != nil {
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return nil, fmt.Errorf("failed to check for IOMMU support: %v", err)
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}
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if len(devices) > 0 {
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features["enabled"] = true
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}
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return features, nil
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}
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// DisableByDefault method of the SupplementalSource interface.
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func (s *iommuSource) DisableByDefault() bool { return true }
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func init() {
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source.Register(&src)
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}
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