# 9P files served by the `authfs` daemon

`users/`
	`<username>/`
		`passwd`
		`login`
`sessions/`
	`<id>/`
		`user`

`/users/<username>/` (d)
To add a user, create the `<username>/` subdirectory. Authfs
automatically creates the `passwd`, and `login` files
inside. Initially the password is nil and login is disabled.

`/users/<username>/passwd` (w)
Writing a (cleartext) password changes the user's password.

`/users/<username>/login` (rw)
To log in and obtain a session, write the user's password to `login`
(in cleartext). Then read from `login`. If the password was correct,
the read will return a session `<id>` corresponding to a directory
under `/sessions/`. Otherwise if the password was incorrect, the read
returns `Rerror`.

`/sessions/<id>/user` (r)
Read returns the `<username>` of the user who owns the session
identified by `<id>`.