/usr/ is in libjna-posix-java 1.0.1-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/maven-repo/org/jruby/
/usr/share/maven-repo/org/jruby/ext/
/usr/share/maven-repo/org/jruby/ext/posix/
/usr/share/
/usr/share/maven-repo/
/usr/share/maven-repo/org/
/usr/share/maven-repo/org/jruby/ext/posix/jna-posix/
/usr/share/maven-repo/org/jruby/ext/posix/jna-posix/1.0.1/
/usr/share/maven-repo/org/jruby/ext/posix/jna-posix/1.0.1/jna-posix-1.0.1.pom
/usr/share/maven-repo/org/jruby/ext/posix/jna-posix/debian/
/usr/share/maven-repo/org/jruby/ext/posix/jna-posix/debian/jna-posix-debian.pom
/usr/share/doc/
/usr/share/doc/libjna-posix-java/
/usr/share/doc/libjna-posix-java/changelog.Debian.gz
/usr/share/doc/libjna-posix-java/README.Debian
/usr/share/doc/libjna-posix-java/copyright
/usr/share/java/
/usr/share/java/jna-posix-1.0.1.jar
/usr/share/maven-repo/org/jruby/ext/posix/jna-posix/1.0.1/jna-posix-1.0.1.jar
/usr/share/maven-repo/org/jruby/ext/posix/jna-posix/debian/jna-posix-debian.jar
/usr/share/java/jna-posix.jar