/usr/share/maven-repo/javax/portlet/portlet-api/1.0/portlet-api-1.0.jar is in libportlet-api-2.0-spec-java 1.0-2.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/maven-repo/javax/portlet/portlet-api/1.0/../../../../../java/portlet-api.jar