+++ /dev/null
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package vfs
-
-import (
- "fmt"
- "os"
- "time"
-)
-
-// NewNameSpace returns a NameSpace pre-initialized with an empty
-// emulated directory mounted on the root mount point "/". This
-// allows directory traversal routines to work properly even if
-// a folder is not explicitly mounted at root by the user.
-func NewNameSpace() NameSpace {
- ns := NameSpace{}
- ns.Bind("/", &emptyVFS{}, "/", BindReplace)
- return ns
-}
-
-// type emptyVFS emulates a FileSystem consisting of an empty directory
-type emptyVFS struct{}
-
-// Open implements Opener. Since emptyVFS is an empty directory, all
-// attempts to open a file should returns errors.
-func (e *emptyVFS) Open(path string) (ReadSeekCloser, error) {
- if path == "/" {
- return nil, fmt.Errorf("open: / is a directory")
- }
- return nil, os.ErrNotExist
-}
-
-// Stat returns os.FileInfo for an empty directory if the path is
-// is root "/" or error. os.FileInfo is implemented by emptyVFS
-func (e *emptyVFS) Stat(path string) (os.FileInfo, error) {
- if path == "/" {
- return e, nil
- }
- return nil, os.ErrNotExist
-}
-
-func (e *emptyVFS) Lstat(path string) (os.FileInfo, error) {
- return e.Stat(path)
-}
-
-// ReadDir returns an empty os.FileInfo slice for "/", else error.
-func (e *emptyVFS) ReadDir(path string) ([]os.FileInfo, error) {
- if path == "/" {
- return []os.FileInfo{}, nil
- }
- return nil, os.ErrNotExist
-}
-
-func (e *emptyVFS) String() string {
- return "emptyVFS(/)"
-}
-
-func (e *emptyVFS) RootType(path string) RootType {
- return ""
-}
-
-// These functions below implement os.FileInfo for the single
-// empty emulated directory.
-
-func (e *emptyVFS) Name() string {
- return "/"
-}
-
-func (e *emptyVFS) Size() int64 {
- return 0
-}
-
-func (e *emptyVFS) Mode() os.FileMode {
- return os.ModeDir | os.ModePerm
-}
-
-func (e *emptyVFS) ModTime() time.Time {
- return time.Time{}
-}
-
-func (e *emptyVFS) IsDir() bool {
- return true
-}
-
-func (e *emptyVFS) Sys() interface{} {
- return nil
-}