X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Fio%2Fio.h;h=0318aef300873fa71104e0a2b630ad28e93e7065;hb=83d4e1285dec87fa54043377eafd1b3bf9b0c53f;hp=b5ffdd243bfd8a1710e551741261bb9159923cff;hpb=13b38a7282c6043d6abe310e5a16d6610ed7a1c1;p=ccan

diff --git a/ccan/io/io.h b/ccan/io/io.h
index b5ffdd24..0318aef3 100644
--- a/ccan/io/io.h
+++ b/ccan/io/io.h
@@ -394,7 +394,7 @@ bool io_timeout_(struct io_conn *conn, struct timespec ts,
  * to have two connections for the same fd, and use one for read
  * operations and one for write.
  *
- * You must io_close() both of them to close the fd.
+ * Returning io_close() on one will close both fds!
  *
  * Example:
  *	static void setup_read_write(int fd,
@@ -490,4 +490,25 @@ struct io_plan io_close_cb(struct io_conn *, void *unused);
  *	io_loop();
  */
 void *io_loop(void);
+
+/**
+ * io_conn_fd - get the fd from a connection.
+ * @conn: the connection.
+ *
+ * Sometimes useful, eg for getsockname().
+ */
+int io_conn_fd(const struct io_conn *conn);
+
+/**
+ * io_set_alloc - set alloc/realloc/free function for io to use.
+ * @allocfn: allocator function
+ * @reallocfn: reallocator function, ptr may be NULL, size never 0.
+ * @freefn: free function
+ *
+ * By default io uses malloc/realloc/free, and returns NULL if they fail.
+ * You can set your own variants here.
+ */
+void io_set_alloc(void *(*allocfn)(size_t size),
+		  void *(*reallocfn)(void *ptr, size_t size),
+		  void (*freefn)(void *ptr));
 #endif /* CCAN_IO_H */