cdef extern from "checkpath.h":
  struct checkpath:
    ctypedef int uid_t
    ctypedef int gid_t
    uid_t cp_uid
    gid_t cp_gid[]
    int cp_gids
    int cp_verbose
    unsigned cp_what
    void (*cp_report)(unsigned, int, char *, char *, void *)
    void *cp_arg
  int checkpath(char *path, checkpath *cp)
  void checkpath_setids(checkpath *cp)