core/io/fs/readonly.go
2023-02-01 16:09:20 +01:00

55 lines
1.1 KiB
Go

package fs
import (
"io"
"os"
)
type readOnlyFilesystem struct {
Filesystem
}
func NewReadOnlyFilesystem(fs Filesystem) (Filesystem, error) {
r := &readOnlyFilesystem{
Filesystem: fs,
}
return r, nil
}
func (r *readOnlyFilesystem) Symlink(oldname, newname string) error {
return os.ErrPermission
}
func (r *readOnlyFilesystem) WriteFileReader(path string, rd io.Reader) (int64, bool, error) {
return -1, false, os.ErrPermission
}
func (r *readOnlyFilesystem) WriteFile(path string, data []byte) (int64, bool, error) {
return -1, false, os.ErrPermission
}
func (r *readOnlyFilesystem) WriteFileSafe(path string, data []byte) (int64, bool, error) {
return -1, false, os.ErrPermission
}
func (r *readOnlyFilesystem) MkdirAll(path string, perm os.FileMode) error {
return os.ErrPermission
}
func (r *readOnlyFilesystem) Remove(path string) int64 {
return -1
}
func (r *readOnlyFilesystem) RemoveAll() int64 {
return 0
}
func (r *readOnlyFilesystem) Purge(size int64) int64 {
return 0
}
func (r *readOnlyFilesystem) Resize(size int64) error {
return os.ErrPermission
}