/usr/share/octave/site/m/sundialsTB/cvodes/function_types/ is in octave-sundials 2.5.0-3+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVBandJacFn.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVBandJacFnB.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVDenseJacFn.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVDenseJacFnB.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVGcommFn.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVGcommFnB.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVGlocalFn.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVGlocalFnB.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVJacTimesVecFn.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVJacTimesVecFnB.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVMonitorFn.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVMonitorFnB.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVPrecSetupFn.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVPrecSetupFnB.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVPrecSolveFn.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVPrecSolveFnB.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVQuadRhsFn.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVQuadRhsFnB.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVRhsFn.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVRhsFnB.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVRootFn.m
/usr/share/octave/site/m/sundialsTB/cvodes/function_types/CVSensRhsFn.m