/usr/share/libvirt/ is in libvirt-daemon 4.0.0-1ubuntu8.
This file is owned by root:root, with mode 0o755.
..
/usr/share/libvirt/cpu_map.xml
/usr/share/libvirt/schemas/
/usr/share/libvirt/schemas/basictypes.rng
/usr/share/libvirt/schemas/capability.rng
/usr/share/libvirt/schemas/cputypes.rng
/usr/share/libvirt/schemas/domain.rng
/usr/share/libvirt/schemas/domaincaps.rng
/usr/share/libvirt/schemas/domaincommon.rng
/usr/share/libvirt/schemas/domainsnapshot.rng
/usr/share/libvirt/schemas/interface.rng
/usr/share/libvirt/schemas/network.rng
/usr/share/libvirt/schemas/networkcommon.rng
/usr/share/libvirt/schemas/nodedev.rng
/usr/share/libvirt/schemas/nwfilter.rng
/usr/share/libvirt/schemas/secret.rng
/usr/share/libvirt/schemas/storagecommon.rng
/usr/share/libvirt/schemas/storagepool.rng
/usr/share/libvirt/schemas/storagevol.rng
/usr/share/libvirt/test-screenshot.png