/usr/include/libosinfo-1.0/osinfo/ is in libosinfo-1.0-dev 0.1.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/libosinfo-1.0/osinfo/osinfo.h
/usr/include/libosinfo-1.0/osinfo/osinfo_db.h
/usr/include/libosinfo-1.0/osinfo/osinfo_deployment.h
/usr/include/libosinfo-1.0/osinfo/osinfo_deploymentlist.h
/usr/include/libosinfo-1.0/osinfo/osinfo_device.h
/usr/include/libosinfo-1.0/osinfo/osinfo_devicelink.h
/usr/include/libosinfo-1.0/osinfo/osinfo_devicelinkfilter.h
/usr/include/libosinfo-1.0/osinfo/osinfo_devicelinklist.h
/usr/include/libosinfo-1.0/osinfo/osinfo_devicelist.h
/usr/include/libosinfo-1.0/osinfo/osinfo_entity.h
/usr/include/libosinfo-1.0/osinfo/osinfo_filter.h
/usr/include/libosinfo-1.0/osinfo/osinfo_list.h
/usr/include/libosinfo-1.0/osinfo/osinfo_loader.h
/usr/include/libosinfo-1.0/osinfo/osinfo_media.h
/usr/include/libosinfo-1.0/osinfo/osinfo_medialist.h
/usr/include/libosinfo-1.0/osinfo/osinfo_os.h
/usr/include/libosinfo-1.0/osinfo/osinfo_oslist.h
/usr/include/libosinfo-1.0/osinfo/osinfo_platform.h
/usr/include/libosinfo-1.0/osinfo/osinfo_platformlist.h
/usr/include/libosinfo-1.0/osinfo/osinfo_product.h
/usr/include/libosinfo-1.0/osinfo/osinfo_productfilter.h
/usr/include/libosinfo-1.0/osinfo/osinfo_productlist.h
/usr/include/libosinfo-1.0/osinfo/osinfo_resources.h
/usr/include/libosinfo-1.0/osinfo/osinfo_resourceslist.h