/usr/share/man/man1/gsmartcontrol-root.1.gz is in gsmartcontrol 0.8.7-1.1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/gsmartcontrol.1.gz
/usr/share/man/man1/gsmartcontrol.1.gz