All files under the /opt/rtcds/userapps/release path are required be writable by all CDS users to permit file sharing. To accomplish this our policy is:
Every Tuesday I am running a checking script which verifies that files under /opt/rtcds/userapps/release have the correct ownership and permissions. It also checks that special permission bits have not been set on regular files. The script is /opt/rtcds/userapps/release/cds/h1/scripts/check_correct_userapps_file_perms.bsh. It was originally written by Michael Thomas. If I have to correct any problems, I do this as user root on h1fs0 during maintenance.
In a long-form directory listing in the userapps area, you should see that all directories have the following permission and group-ownership:
drwxrwsr-x {owners-name} controls
the "s" in the group execute location (replacing "x") indicates files under this directory will also have controls group-ownership.