mirror of https://github.com/spf13/afero.git
101 lines
2.1 KiB
Go
101 lines
2.1 KiB
Go
package afero
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import (
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"os"
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"syscall"
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"time"
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)
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var _ Lstater = (*ReadOnlyFs)(nil)
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type ReadOnlyFs struct {
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source Fs
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}
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func NewReadOnlyFs(source Fs) Fs {
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return &ReadOnlyFs{source: source}
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}
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func (r *ReadOnlyFs) ReadDir(name string) ([]os.FileInfo, error) {
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return ReadDir(r.source, name)
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}
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func (r *ReadOnlyFs) Chtimes(n string, a, m time.Time) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) Chmod(n string, m os.FileMode) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) Chown(n string, uid, gid int) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) Name() string {
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return "ReadOnlyFilter"
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}
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func (r *ReadOnlyFs) Stat(name string) (os.FileInfo, error) {
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return r.source.Stat(name)
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}
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func (r *ReadOnlyFs) LstatIfPossible(name string) (os.FileInfo, bool, error) {
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if lsf, ok := r.source.(Lstater); ok {
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return lsf.LstatIfPossible(name)
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}
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fi, err := r.Stat(name)
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return fi, false, err
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}
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func (r *ReadOnlyFs) SymlinkIfPossible(oldname, newname string) error {
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return &os.LinkError{Op: "symlink", Old: oldname, New: newname, Err: ErrNoSymlink}
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}
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func (r *ReadOnlyFs) ReadlinkIfPossible(name string) (string, error) {
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if srdr, ok := r.source.(LinkReader); ok {
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return srdr.ReadlinkIfPossible(name)
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}
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return "", &os.PathError{Op: "readlink", Path: name, Err: ErrNoReadlink}
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}
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func (r *ReadOnlyFs) Rename(o, n string) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) RemoveAll(p string) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) Remove(n string) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) OpenFile(name string, flag int, perm os.FileMode) (File, error) {
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if flag&(os.O_WRONLY|syscall.O_RDWR|os.O_APPEND|os.O_CREATE|os.O_TRUNC) != 0 {
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return nil, syscall.EPERM
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}
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return r.source.OpenFile(name, flag, perm)
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}
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func (r *ReadOnlyFs) Open(n string) (File, error) {
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return r.source.Open(n)
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}
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func (r *ReadOnlyFs) Mkdir(n string, p os.FileMode) error {
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) MkdirAll(n string, p os.FileMode) error {
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fi, err := r.source.Stat(n)
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if err == nil && fi.IsDir() {
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return nil
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}
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return syscall.EPERM
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}
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func (r *ReadOnlyFs) Create(n string) (File, error) {
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return nil, syscall.EPERM
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}
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