The standard library winix_base_data_file_io_driver_for_posix package does something. Let me know if you figure out what.
The winix_base_data_file_io_driver_for_posix package implements the Winix_Extended_File_Io_Driver_For_Os api.
The winix_base_data_file_io_driver_for_posix package source code is in src/lib/std/src/io/winix-base-data-file-io-driver-for-posix.pkg.
See also: winix_base_text_file_io_driver_for_posix package.
The above information is manually maintained and may contain errors.
Winix_Base_File_Io_Driver_For_Os