Karl MacMillan wrote:
> As part of some work to improve the parser in checkpolicy and module 
> data structures in libsepol, I have implemented doubly-linked list and 
> iterator data types. The attached patch adds these to libsepol.
> 
> I would appreciate feedback on these before I submit larger patches that 
> make use of them. In particular:
> 
> * Is the iterator concept acceptable (I plan to add iterator support to 
> other data types including hashtabs)?
> 

Attached is a patch that implements iterators for hash tables (it also 
includes some unrelated cleanups).

Karl