You’ve got the right idea with the permission change… the key is that you can have code executing on the remote side with different permissions. So the writer process has permission to write in one directory, and the turnsyle procees (often the root super-user) rotates the files or directories at a different time (or on a signal, sometimes).
You’ve got the right idea with the permission change… the key is that you can have code executing on the remote side with different permissions. So the writer process has permission to write in one directory, and the turnsyle procees (often the root super-user) rotates the files or directories at a different time (or on a signal, sometimes).