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72 lines
1.8 KiB
Go
72 lines
1.8 KiB
Go
// +build linux
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/*
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Copyright 2014 The Kubernetes Authors All rights reserved.
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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 kubelet
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import (
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"os"
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"path/filepath"
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"syscall"
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"github.com/golang/glog"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/volume"
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)
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// Bitmasks to OR with current ownership of volumes that allow ownership management by the Kubelet
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const (
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rwMask = os.FileMode(0660)
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roMask = os.FileMode(0440)
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)
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// manageVolumeOwnership modifies the given volume to be owned by fsGroup.
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func (kl *Kubelet) manageVolumeOwnership(pod *api.Pod, volSpec *volume.Spec, builder volume.Builder, fsGroup int64) error {
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return filepath.Walk(builder.GetPath(), func(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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stat, ok := info.Sys().(*syscall.Stat_t)
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if !ok {
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return nil
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}
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if stat == nil {
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glog.Errorf("Got nil stat_t for path %v while managing ownership of volume %v for pod %s/%s", path, volSpec.Name, pod.Namespace, pod.Name)
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return nil
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}
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err = kl.chownRunner.Chown(path, int(stat.Uid), int(fsGroup))
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if err != nil {
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glog.Errorf("Chown failed on %v: %v", path, err)
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}
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mask := rwMask
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if builder.GetAttributes().ReadOnly {
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mask = roMask
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}
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err = kl.chmodRunner.Chmod(path, info.Mode()|mask|os.ModeSetgid)
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if err != nil {
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glog.Errorf("Chmod failed on %v: %v", path, err)
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}
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return nil
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})
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}
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