/usr/share/man/man1/rds-sink.1.gz is in rds-tools 1.4.1-OFED-1.4.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/rds-gen.1.gz
/usr/share/man/man1/rds-gen.1.gz