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