/usr/lib/x86_64-linux-gnu/libsmbsharemodes.so is in libsmbsharemodes-dev 2:4.1.6+dfsg-1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libsmbsharemodes.so.0
/usr/lib/x86_64-linux-gnu/libsmbsharemodes.so.0