Here are the data structures with brief descriptions:

Ciso_data_source	Data source used by libisofs for reading an existing image
Ciso_external_filter_command	Representation of an external program that shall serve as filter for an IsoStream
Ciso_file_section	File section in an old image
Ciso_file_source	An IsoFile Source is a POSIX abstraction of a file
Ciso_filesystem	An IsoFilesystem is a handler for a source of files, or a "filesystem"
Ciso_hfsplus_xinfo_data	HFS+ attributes which may be attached to IsoNode objects as data parameter of iso_node_add_xinfo()
Ciso_stream	Representation of file contents as a stream of bytes
Ciso_zisofs_ctrl	Parameter set for iso_zisofs_set_params()
CIsoFileSource_Iface	Interface definition for an IsoFileSource
CIsoStream_Iface	Interface definition for IsoStream methods