system calls in a library

[Mayuresh Kathe]

from previous discussions on this list, i know that the system interfaces
exposed by the freebsd kernel are also included and exposed via libc, in
addition to the standard c library functions. did i get that right?
if yes, is it possible to expose those kernel system interfaces via a c++
library? but one which is devoid of c++ library functions? which in the
case of freebsd is included in something like libstdcpp? please correct
me if and where i am wrong.
thanks.