mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
synced 2024-12-15 17:50:49 +00:00
0945019161
Separate feature discovery and creation of feature labels in the kernel source. Move kernelutils from source/internal back to the source/kernel package. Change the kconfig custom rule to rely on the FeatureSource interface (GetFeatures()) of the kernel source. Also, add minimalist unit test.
61 lines
1.5 KiB
Go
61 lines
1.5 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 kernel
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import (
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"io/ioutil"
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"regexp"
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"strings"
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)
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// Read and parse kernel version
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func parseVersion() (map[string]string, error) {
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version := map[string]string{}
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full, err := getVersion()
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if err != nil {
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return nil, err
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}
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// Replace forbidden symbols
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fullRegex := regexp.MustCompile("[^-A-Za-z0-9_.]")
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full = fullRegex.ReplaceAllString(full, "_")
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// Label values must start and end with an alphanumeric
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full = strings.Trim(full, "-_.")
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version["full"] = full
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// Regexp for parsing version components
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re := regexp.MustCompile(`^(?P<major>\d+)(\.(?P<minor>\d+))?(\.(?P<revision>\d+))?(-.*)?$`)
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if m := re.FindStringSubmatch(full); m != nil {
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for i, name := range re.SubexpNames() {
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if i != 0 && name != "" {
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version[name] = m[i]
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}
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}
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}
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return version, nil
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}
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func getVersion() (string, error) {
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unameRaw, err := ioutil.ReadFile("/proc/sys/kernel/osrelease")
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if err != nil {
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return "", err
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}
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return strings.TrimSpace(string(unameRaw)), nil
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}
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