kubernetes/pkg/util/mount/mount_unsupported.go

// +build !linux,!windows

/*
Copyright 2014 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 mount

import (
	"errors"
	"os"
)

// Mounter implements mount.Interface for unsupported platforms
type Mounter struct {
	mounterPath string
}

var errUnsupported = errors.New("util/mount on this platform is not supported")

// New returns a mount.Interface for the current system.
// It provides options to override the default mounter behavior.
// mounterPath allows using an alternative to `/bin/mount` for mounting.
func New(mounterPath string) Interface {
	return &Mounter{
		mounterPath: mounterPath,
	}
}

// Mount always returns an error on unsupported platforms
func (mounter *Mounter) Mount(source string, target string, fstype string, options []string) error {
	return errUnsupported
}

// Unmount always returns an error on unsupported platforms
func (mounter *Mounter) Unmount(target string) error {
	return errUnsupported
}

// List always returns an error on unsupported platforms
func (mounter *Mounter) List() ([]MountPoint, error) {
	return []MountPoint{}, errUnsupported
}

// IsMountPointMatch returns true if the path in mp is the same as dir
func (mounter *Mounter) IsMountPointMatch(mp MountPoint, dir string) bool {
	return (mp.Path == dir)
}

// IsLikelyNotMountPoint always returns an error on unsupported platforms
func (mounter *Mounter) IsLikelyNotMountPoint(file string) (bool, error) {
	return true, errUnsupported
}

// GetMountRefs always returns an error on unsupported platforms
func (mounter *Mounter) GetMountRefs(pathname string) ([]string, error) {
	return nil, errUnsupported
}

func (mounter *SafeFormatAndMount) formatAndMount(source string, target string, fstype string, options []string) error {
	return mounter.Interface.Mount(source, target, fstype, options)
}

func (mounter *SafeFormatAndMount) diskLooksUnformatted(disk string) (bool, error) {
	return true, errUnsupported
}

func getDeviceNameFromMount(mounter Interface, mountPath, pluginMountDir string) (string, error) {
	return "", errUnsupported
}

type hostUtil struct{}

// NewHostUtil returns a struct that implements the HostUtils interface on
// unsupported platforms
func NewHostUtil() HostUtils {
	return &hostUtil{}
}

// DeviceOpened determines if the device is in use elsewhere
func (hu *hostUtil) DeviceOpened(pathname string) (bool, error) {
	return false, errUnsupported
}

// PathIsDevice determines if a path is a device.
func (hu *hostUtil) PathIsDevice(pathname string) (bool, error) {
	return true, errUnsupported
}

// GetDeviceNameFromMount finds the device name by checking the mount path
// to get the global mount path within its plugin directory
func (hu *hostUtil) GetDeviceNameFromMount(mounter Interface, mountPath, pluginMountDir string) (string, error) {
	return "", errUnsupported
}

func (hu *hostUtil) MakeRShared(path string) error {
	return errUnsupported
}

func (hu *hostUtil) GetFileType(pathname string) (FileType, error) {
	return FileType("fake"), errUnsupported
}

func (hu *hostUtil) MakeFile(pathname string) error {
	return errUnsupported
}

func (hu *hostUtil) MakeDir(pathname string) error {
	return errUnsupported
}

func (hu *hostUtil) ExistsPath(pathname string) (bool, error) {
	return true, errUnsupported
}

// EvalHostSymlinks returns the path name after evaluating symlinks
func (hu *hostUtil) EvalHostSymlinks(pathname string) (string, error) {
	return "", errUnsupported
}

// GetOwner returns the integer ID for the user and group of the given path
func (hu *hostUtil) GetOwner(pathname string) (int64, int64, error) {
	return -1, -1, errUnsupported
}

func (hu *hostUtil) GetSELinuxSupport(pathname string) (bool, error) {
	return false, errUnsupported
}

func (hu *hostUtil) GetMode(pathname string) (os.FileMode, error) {
	return 0, errUnsupported
}