> The corename value is keep in a char array of MAXPATHLEN, stored in
> struct plimit (it's ideally suited for this because it's already
> designed for inheritance, maybe it should just be renamed ?).

This seems like a lot of memory to waste, especially since many users
set limits in all their shells, and the default name is simply going
to waste 1016 bytes.  The goal is to *reduce* per-process overhead,
not *increase* it.