How can I create directories so:
/data /data/user1 /data/user2
and make sure that whenever
root writes inside them, depending on which directory it writes to, different owners are set.
- Root writes to /data -> normal file creation
- Root writes to /data/user1 -> any files created therein are automatically owned by user1 and readable by others (the same should apply if user1 writes to the dir himself)