mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
synced 2024-12-14 11:57:51 +00:00
109caa1f28
This PR adds the combination of dynamic and builtin kernel modules into one feature called `kernel.enabledmodule`. It's a superset of the `kernel.loadedmodule` feature. Signed-off-by: AhmedGrati <ahmedgrati1999@gmail.com>
74 lines
1.9 KiB
Go
74 lines
1.9 KiB
Go
/*
|
|
Copyright 2021 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package kernel
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"path"
|
|
"strings"
|
|
|
|
"sigs.k8s.io/node-feature-discovery/pkg/utils/hostpath"
|
|
)
|
|
|
|
const kmodProcfsPath = "/proc/modules"
|
|
|
|
func getLoadedModules() ([]string, error) {
|
|
out, err := os.ReadFile(kmodProcfsPath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to read file %s: %s", kmodProcfsPath, err.Error())
|
|
}
|
|
|
|
lines := strings.Split(string(out), "\n")
|
|
loadedMods := make([]string, 0, len(lines))
|
|
for _, line := range lines {
|
|
// skip empty lines
|
|
if len(line) == 0 {
|
|
continue
|
|
}
|
|
// append loaded module
|
|
loadedMods = append(loadedMods, strings.Fields(line)[0])
|
|
}
|
|
return loadedMods, nil
|
|
}
|
|
|
|
func getBuiltinModules() ([]string, error) {
|
|
kVersion, err := getVersion()
|
|
if err != nil {
|
|
return []string{}, err
|
|
}
|
|
|
|
kBuiltinModPath := hostpath.LibDir.Path("modules/" + kVersion + "/modules.builtin")
|
|
out, err := os.ReadFile(kBuiltinModPath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to read file %s: %s", kBuiltinModPath, err.Error())
|
|
}
|
|
|
|
lines := strings.Split(string(out), "\n")
|
|
builtinMods := make([]string, 0, len(lines))
|
|
for _, line := range lines {
|
|
// skip empty lines
|
|
line = strings.TrimSpace(line)
|
|
if !strings.HasSuffix(line, ".ko") {
|
|
continue
|
|
}
|
|
|
|
// append loaded module
|
|
builtinMods = append(builtinMods, strings.TrimSuffix(path.Base(line), ".ko"))
|
|
}
|
|
return builtinMods, nil
|
|
}
|