47c7d8327c
This is independent of the recently-discussed global change, which is still in review/discussion stage. This is effectively a measure for consistency in the ZFS world, where FreeBSD was the only platform (as far as I could find) that allowed this. What ZFS exposes is decidedly not useful for any real purposes, to paraphrase (hopefully faithfully) jhb's findings when exploring this: The size of a directory in ZFS is the number of directory entries within. When reading a directory, you would instead get the leading part of its raw contents; the amount you get being dictated by the "size," i.e. number of directory entries. There's decidedly (luckily) no stack disclosure happening here, though the behavior is bizarre and almost certainly a historical accident. This change has already been upstreamed to OpenZFS. MFC after: 1 week
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