> Or how about this: Just as you don't need read permissions on a > directory to walk it -- so long as you know the name of the file you > want -- how about 9p allowing walks to ordinary files.
you could do this (macos x does something very similar), but it would still have exactly the same problems that most of these schemes have; i.e. the metadata will be lost unless all tools in the path from source to destination are aware of its existence.
