# `platform_win::fs`
Windows-only file-system submodules that need more structure than a flat
platform file carries.
- `private_directory.rs` — owner-only directory DACLs (`ensure_dir_private`,
`create_dir_all_private`): which trustees a deploy-directory DACL names.
- `write_seal.rs` — in-place write sealing without the `READONLY` attribute
(`deny_in_place_writes` / `allow_in_place_writes` /
`in_place_writes_denied`): a deny ACE for write-data keeps the owner from
writing a file in place while `Permissions::readonly()` stays false and
rename-over-replace still works (zccache#1791).