int recv_bin_buffer(int fd, char *buf, size_t size);
int recv_buffer(int fd, char *buf, size_t size);
-int para_accept(int fd, fd_set *rfds, void *addr, socklen_t size, int *new_fd);
+int para_accept(int fd, void *addr, socklen_t size, int *new_fd);
int create_local_socket(const char *name);
int connect_local_socket(const char *name);
int recv_cred_buffer(int, char *, size_t);