/usr/ is in libvirt-dev 4.0.0-1ubuntu8.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/libvirt/
/usr/include/libvirt/libvirt-admin.h
/usr/include/libvirt/libvirt-common.h
/usr/include/libvirt/libvirt-domain-snapshot.h
/usr/include/libvirt/libvirt-domain.h
/usr/include/libvirt/libvirt-event.h
/usr/include/libvirt/libvirt-host.h
/usr/include/libvirt/libvirt-interface.h
/usr/include/libvirt/libvirt-lxc.h
/usr/include/libvirt/libvirt-network.h
/usr/include/libvirt/libvirt-nodedev.h
/usr/include/libvirt/libvirt-nwfilter.h
/usr/include/libvirt/libvirt-qemu.h
/usr/include/libvirt/libvirt-secret.h
/usr/include/libvirt/libvirt-storage.h
/usr/include/libvirt/libvirt-stream.h
/usr/include/libvirt/libvirt.h
/usr/include/libvirt/virterror.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libvirt-admin.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/libvirt-lxc.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/libvirt-qemu.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/libvirt.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libvirt-dev/
/usr/share/doc/libvirt-dev/copyright
/usr/share/libvirt/
/usr/share/libvirt/api/
/usr/share/libvirt/api/libvirt-admin-api.xml
/usr/share/libvirt/api/libvirt-api.xml
/usr/share/libvirt/api/libvirt-lxc-api.xml
/usr/share/libvirt/api/libvirt-qemu-api.xml
/usr/lib/x86_64-linux-gnu/libvirt-admin.so
/usr/lib/x86_64-linux-gnu/libvirt-lxc.so
/usr/lib/x86_64-linux-gnu/libvirt-qemu.so
/usr/lib/x86_64-linux-gnu/libvirt.so
/usr/share/doc/libvirt-dev/changelog.Debian.gz
/usr/share/doc/libvirt-dev/changelog.gz