/usr/share/idl/tao/PI/ is in libtao-dev 6.0.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/idl/tao/PI/ClientRequestInfo.pidl
/usr/share/idl/tao/PI/ClientRequestInterceptor.pidl
/usr/share/idl/tao/PI/Interceptor.pidl
/usr/share/idl/tao/PI/InvalidSlot.pidl
/usr/share/idl/tao/PI/ORBInitInfo.pidl
/usr/share/idl/tao/PI/ORBInitializer.pidl
/usr/share/idl/tao/PI/PICurrent.pidl
/usr/share/idl/tao/PI/PIForwardRequest.pidl
/usr/share/idl/tao/PI/PI_include.pidl
/usr/share/idl/tao/PI/PolicyFactory.pidl
/usr/share/idl/tao/PI/ProcessingModePolicy.pidl
/usr/share/idl/tao/PI/RequestInfo.pidl
/usr/share/idl/tao/PI_Server/PI_Server_include.pidl
/usr/share/idl/tao/PI_Server/ServerRequestInfo.pidl
/usr/share/idl/tao/PI_Server/ServerRequestInterceptor.pidl