/usr/ is in libblockdev-utils-dev 2.16-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/blockdev/
/usr/include/blockdev/dev_utils.h
/usr/include/blockdev/exec.h
/usr/include/blockdev/extra_arg.h
/usr/include/blockdev/module.h
/usr/include/blockdev/sizes.h
/usr/include/blockdev/utils.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/blockdev-utils.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libblockdev-utils-dev/
/usr/share/doc/libblockdev-utils-dev/copyright
/usr/lib/x86_64-linux-gnu/libbd_utils.so
/usr/share/doc/libblockdev-utils-dev/changelog.Debian.gz