# File lib/mongo/db.rb, line 178 def add_user(username, password, read_only = false) users = self[SYSTEM_USER_COLLECTION] user = users.find_one({:user => username}) || {:user => username} user['pwd'] = Mongo::Support.hash_password(username, password) user['readOnly'] = true if read_only; users.save(user) return user end