935c23f2ad
This patch moves the HostUtil functionality from the util/mount package to the volume/util/hostutil package. All `*NewHostUtil*` calls are changed to return concrete types instead of interfaces. All callers are changed to use the `*NewHostUtil*` methods instead of directly instantiating the concrete types.
126 lines
3.8 KiB
Go
126 lines
3.8 KiB
Go
// +build windows
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/*
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Copyright 2017 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 hostutil
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import (
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"fmt"
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"os"
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"path"
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"path/filepath"
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"strings"
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"k8s.io/klog"
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utilpath "k8s.io/utils/path"
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"k8s.io/kubernetes/pkg/util/mount"
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)
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// HostUtil implements HostUtils for Windows platforms.
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type HostUtil struct{}
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// NewHostUtil returns a struct that implements HostUtils on Windows platforms
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func NewHostUtil() *HostUtil {
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return &HostUtil{}
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}
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// GetDeviceNameFromMount given a mnt point, find the device
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func (hu *HostUtil) GetDeviceNameFromMount(mounter mount.Interface, mountPath, pluginMountDir string) (string, error) {
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return getDeviceNameFromMount(mounter, mountPath, pluginMountDir)
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}
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// getDeviceNameFromMount find the device(drive) name in which
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// the mount path reference should match the given plugin mount directory. In case no mount path reference
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// matches, returns the volume name taken from its given mountPath
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func getDeviceNameFromMount(mounter mount.Interface, mountPath, pluginMountDir string) (string, error) {
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refs, err := mounter.GetMountRefs(mountPath)
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if err != nil {
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klog.V(4).Infof("GetMountRefs failed for mount path %q: %v", mountPath, err)
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return "", err
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}
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if len(refs) == 0 {
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return "", fmt.Errorf("directory %s is not mounted", mountPath)
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}
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basemountPath := mount.NormalizeWindowsPath(pluginMountDir)
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for _, ref := range refs {
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if strings.Contains(ref, basemountPath) {
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volumeID, err := filepath.Rel(mount.NormalizeWindowsPath(basemountPath), ref)
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if err != nil {
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klog.Errorf("Failed to get volume id from mount %s - %v", mountPath, err)
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return "", err
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}
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return volumeID, nil
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}
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}
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return path.Base(mountPath), nil
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}
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// DeviceOpened determines if the device is in use elsewhere
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func (hu *HostUtil) DeviceOpened(pathname string) (bool, error) {
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return false, nil
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}
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// PathIsDevice determines if a path is a device.
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func (hu *HostUtil) PathIsDevice(pathname string) (bool, error) {
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return false, nil
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}
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// MakeRShared checks that given path is on a mount with 'rshared' mount
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// propagation. Empty implementation here.
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func (hu *HostUtil) MakeRShared(path string) error {
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return nil
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}
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// GetFileType checks for sockets/block/character devices
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func (hu *(HostUtil)) GetFileType(pathname string) (FileType, error) {
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return getFileType(pathname)
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}
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// PathExists checks whether the path exists
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func (hu *HostUtil) PathExists(pathname string) (bool, error) {
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return utilpath.Exists(utilpath.CheckFollowSymlink, pathname)
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}
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// EvalHostSymlinks returns the path name after evaluating symlinks
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func (hu *HostUtil) EvalHostSymlinks(pathname string) (string, error) {
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return filepath.EvalSymlinks(pathname)
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}
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// GetOwner returns the integer ID for the user and group of the given path
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// Note that on windows, it always returns 0. We actually don't set Group on
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// windows platform, see SetVolumeOwnership implementation.
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func (hu *HostUtil) GetOwner(pathname string) (int64, int64, error) {
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return -1, -1, nil
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}
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// GetSELinuxSupport returns a boolean indicating support for SELinux.
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// Windows does not support SELinux.
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func (hu *HostUtil) GetSELinuxSupport(pathname string) (bool, error) {
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return false, nil
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}
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// GetMode returns permissions of the path.
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func (hu *HostUtil) GetMode(pathname string) (os.FileMode, error) {
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info, err := os.Stat(pathname)
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if err != nil {
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return 0, err
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}
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return info.Mode(), nil
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}
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