file is set up for a particular authentication
scheme when you set up the scheme's
For example, to set up an idata file for cr1,
enter the following:
idadmin -S cr1 -I M1@M2
This creates auidata file in /etc/idmap/cr1, together with an idata file. However, users cannot add entries to the file, and the name mapping function does not attempt to read the file, until user-controlled mapping is enabled, as described in the following section.