It almost feels as if libc.so equivelancy should be closer to _dl_find_shlib(),
(in particular, meaning searchpath[0] in _dl_find_shlib() coming from lpath in _dl_load_shlib() Is testing for this in loader.c not the right place, and that code should be moved to a deeper place, reached by more variations? The thing that would break is if someone dlopen() of "libc.so.not-a-system-library", and that is a real .so but not a real full libc; imagine it just contains 1 stub function which isn't a system call. it would now fail to load that stub function. So maybe it is better if we force the applications to request "libc.so".
