vendor/github.com/spf13/afero/readonlyfs.go

   1 package afero
   2
   3 import (
   4         "os"
   5         "syscall"
   6         "time"
   7 )
   8
   9 var _ Lstater = (*ReadOnlyFs)(nil)
  10
  11 type ReadOnlyFs struct {
  12         source Fs
  13 }
  14
  15 func NewReadOnlyFs(source Fs) Fs {
  16         return &ReadOnlyFs{source: source}
  17 }
  18
  19 func (r *ReadOnlyFs) ReadDir(name string) ([]os.FileInfo, error) {
  20         return ReadDir(r.source, name)
  21 }
  22
  23 func (r *ReadOnlyFs) Chtimes(n string, a, m time.Time) error {
  24         return syscall.EPERM
  25 }
  26
  27 func (r *ReadOnlyFs) Chmod(n string, m os.FileMode) error {
  28         return syscall.EPERM
  29 }
  30
  31 func (r *ReadOnlyFs) Name() string {
  32         return "ReadOnlyFilter"
  33 }
  34
  35 func (r *ReadOnlyFs) Stat(name string) (os.FileInfo, error) {
  36         return r.source.Stat(name)
  37 }
  38
  39 func (r *ReadOnlyFs) LstatIfPossible(name string) (os.FileInfo, bool, error) {
  40         if lsf, ok := r.source.(Lstater); ok {
  41                 return lsf.LstatIfPossible(name)
  42         }
  43         fi, err := r.Stat(name)
  44         return fi, false, err
  45 }
  46
  47 func (r *ReadOnlyFs) Rename(o, n string) error {
  48         return syscall.EPERM
  49 }
  50
  51 func (r *ReadOnlyFs) RemoveAll(p string) error {
  52         return syscall.EPERM
  53 }
  54
  55 func (r *ReadOnlyFs) Remove(n string) error {
  56         return syscall.EPERM
  57 }
  58
  59 func (r *ReadOnlyFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
  60         if flag&(os.O_WRONLY|syscall.O_RDWR|os.O_APPEND|os.O_CREATE|os.O_TRUNC) != 0 {
  61                 return nil, syscall.EPERM
  62         }
  63         return r.source.OpenFile(name, flag, perm)
  64 }
  65
  66 func (r *ReadOnlyFs) Open(n string) (File, error) {
  67         return r.source.Open(n)
  68 }
  69
  70 func (r *ReadOnlyFs) Mkdir(n string, p os.FileMode) error {
  71         return syscall.EPERM
  72 }
  73
  74 func (r *ReadOnlyFs) MkdirAll(n string, p os.FileMode) error {
  75         return syscall.EPERM
  76 }
  77
  78 func (r *ReadOnlyFs) Create(n string) (File, error) {
  79         return nil, syscall.EPERM
  80 }