const char *ds_name, void *);
/* Callback passed to the "get_ident_data" function. */
typedef int (*dp_get_ident_data_callback) (graph_ident_t *, const char *ds_name,
const char *ds_name, void *);
/* Callback passed to the "get_ident_data" function. */
typedef int (*dp_get_ident_data_callback) (graph_ident_t *, const char *ds_name,