b94ee6bcb1
This patch takes all the HostUtil functionality currently found in mount*.go files and copies it into hostutil*.go files. Care was taken to preserve git history to the fullest extent. As part of doing this, some common functionality was moved into mount_helper files in preperation for HostUtils to stay in k/k and Mount to move out. THe tests for each relevant function were moved to test files to match the appropriate location.
146 lines
4.1 KiB
Go
146 lines
4.1 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 mount
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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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)
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type hostUtil struct{}
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// NewHostUtil returns a struct that implements the HostUtils interface on
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// windows platforms
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func NewHostUtil() HostUtils {
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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 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 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 := 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(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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// MakeFile creates a new directory
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func (hu *hostUtil) MakeDir(pathname string) error {
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err := os.MkdirAll(pathname, os.FileMode(0755))
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if err != nil {
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if !os.IsExist(err) {
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return err
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}
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}
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return nil
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}
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// MakeFile creates an empty file
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func (hu *hostUtil) MakeFile(pathname string) error {
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f, err := os.OpenFile(pathname, os.O_CREATE, os.FileMode(0644))
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defer f.Close()
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if err != nil {
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if !os.IsExist(err) {
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return err
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}
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}
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return nil
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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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func (hu *hostUtil) GetSELinuxSupport(pathname string) (bool, error) {
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// Windows does not support SELinux.
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return false, nil
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}
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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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