/usr/share/java/glassfish-jmac-api.jar is in glassfish-jmac-api 1:2.1.1-b31g+dfsg1-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/java/../maven-repo/javax/security/auth/message/jmac-api/2.1/jmac-api-2.1.jar