Central Oracle inventory does not have oraInventory folder. Want to create it and put all subfolders

Oracle inventory does not have oraInventory folder. Want to create it and put all subfolders amd files which belong to oraInventory in it. Which subfolders and files are contained in oraInventory, R 10.2.0.2 (3) ?This is the dir in which central inventory currently is:
retpirel1:oracle:ROIDV11 836$ pwd
/cwsw/oracle/crs
retpirel1:oracle:ROIDV11 837$ ls -l
total 216
drwxrwxr-x    2 oracle   dba            4096 Apr 18 2007  Contents
drwxrwxr-x    2 oracle   dba             256 Jan 11 2007  ContentsXML
lrwxrwxrwx    1 oracle   dba              26 Feb 22 09:36 JRE -> /cwsw/oracle/crs/jre/1.4.2
drwxrwxr-x    5 oracle   dba             256 Mar 29 2007  OPatch
drwxr-xr-x    2 root     dba            8192 Mar 29 2007  bin
drwxrwxr-x    4 oracle   dba             256 Jan 11 2007  cdata
drwxrwxr-x    6 oracle   dba             256 Mar 29 2007  cfgtoollogs
drwxrwxr-x    4 oracle   dba             256 Jan 11 2007  clone