Here are the data structures with brief descriptions:

Chashtable	The hashtable type
Crabinkarp	The rabinkarp_t state type
CRollsum	The Rollsum state type
Crs_block_match
Crs_block_sig	Signature of a single block
Crs_buffers_s	Description of input and output buffers
Crs_filebuf
Crs_job	The contents of this structure are private
Crs_mdfour	The rs_mdfour state type
Crs_op_kind_name
Crs_prototab_ent
Crs_signature	Signature of a whole file
Crs_stats	Performance statistics from a librsync encoding or decoding operation
Cweaksum	Abstract wrapper around weaksum implementations