mirror of
https://github.com/kubernetes-sigs/node-feature-discovery.git
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73704e2e11
Get rid of distracting error in the log in case selinux is not enabled in the kernel. Still print an error only if sysfs/fs directory is not available, though, which indicates that we're not able to correctly detect the presence of selinux.
52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
/*
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Copyright 2017-2018 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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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"k8s.io/klog/v2"
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"sigs.k8s.io/node-feature-discovery/source"
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)
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// Detect if selinux has been enabled in the kernel
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func SelinuxEnabled() (bool, error) {
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sysfsBase := source.SysfsDir.Path("fs")
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if _, err := os.Stat(sysfsBase); err != nil {
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return false, fmt.Errorf("unable to detect selinux status: %w", err)
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}
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selinuxBase := filepath.Join(sysfsBase, "selinux")
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if _, err := os.Stat(selinuxBase); os.IsNotExist(err) {
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klog.V(1).Info("selinux not available on the system")
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return false, nil
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}
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status, err := ioutil.ReadFile(filepath.Join(selinuxBase, "enforce"))
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if err != nil {
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return false, fmt.Errorf("failed to detect the status of selinux: %w", err)
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}
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if status[0] == byte('1') {
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// selinux is enabled.
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return true, nil
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}
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return false, nil
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}
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