/usr/ is in libsamba-util-dev 4.0.0~alpha18.dfsg1-4ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/libsamba-util.so
/usr/lib/x86_64-linux-gnu/libtevent-util.so
/usr/include/
/usr/include/samba-4.0/
/usr/include/samba-4.0/samba_util.h
/usr/include/samba-4.0/dlinklist.h
/usr/include/samba-4.0/util/
/usr/include/samba-4.0/util/byteorder.h
/usr/include/samba-4.0/util/data_blob.h
/usr/include/samba-4.0/util/debug.h
/usr/include/samba-4.0/util/memory.h
/usr/include/samba-4.0/util/safe_string.h
/usr/include/samba-4.0/util/string_wrappers.h
/usr/include/samba-4.0/util/talloc_stack.h
/usr/include/samba-4.0/util/tevent_werror.h
/usr/include/samba-4.0/util/time.h
/usr/include/samba-4.0/util/xfile.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/samba-util.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libsamba-util-dev/
/usr/share/doc/libsamba-util-dev/copyright
/usr/share/doc/libsamba-util-dev/changelog.Debian.gz