Sorry for the very delayed response on this note. Was going back and
cleaning out my email.
I work on a system where the regular user does not have ready access to the
underlying filesystem. Essentially they are using the system in kiosk
mode. We want the user to only have the ability to open files from their
home folder, but no where else for security reasons. We don't want them to
be able to browse around to other folders outside their home folder. We
tried resolving the issue using SELinux but it's not a complete solution,
because if we make SELinux too restrictive then LibreOffice breaks. This
is probably related to lack of expertise in writing SELinux policy. At any
rate, we thought finding a way to restrict LibreOffice to only have the
ability to view their home folder would be a more expedient solution. This
would probably involve making code changes, but we haven't delved into that
because we don't want to have to maintain those changes for future updates
to LibreOffice. Thanks for your help,
-Will Crisp