X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fio%2Fio.c;h=12df06d82cb6474fed825cd381f7f225fc6213b1;hp=7ebd5a202d7899f356ed1963eb3c6f463ee986e2;hb=HEAD;hpb=a5881c0deb210f56c2095366ae6cdabd5230d68d

diff --git a/ccan/io/io.c b/ccan/io/io.c
index 7ebd5a20..12df06d8 100644
--- a/ccan/io/io.c
+++ b/ccan/io/io.c
@@ -119,6 +119,16 @@ struct io_conn *io_new_conn_(const tal_t *ctx, int fd,
 	return conn;
 }
 
+bool io_conn_exclusive(struct io_conn *conn, bool exclusive)
+{
+	return backend_set_exclusive(&conn->plan[IO_IN], exclusive);
+}
+
+bool io_conn_out_exclusive(struct io_conn *conn, bool exclusive)
+{
+	return backend_set_exclusive(&conn->plan[IO_OUT], exclusive);
+}
+
 void io_set_finish_(struct io_conn *conn,
 		    void (*finish)(struct io_conn *, void *),
 		    void *arg)
@@ -519,6 +529,18 @@ bool io_plan_out_started(const struct io_conn *conn)
 	return conn->plan[IO_OUT].status == IO_POLLING_STARTED;
 }
 
+/* Despite being a TCP expert, I missed the full extent of this
+ * problem.  The legendary ZmnSCPxj implemented it (with the URL
+ * pointing to the explanation), and I imitate that here. */
+struct io_plan *io_sock_shutdown(struct io_conn *conn)
+{
+	if (shutdown(io_conn_fd(conn), SHUT_WR) != 0)
+		return io_close(conn);
+
+	/* And leave unset .*/
+	return &conn->plan[IO_IN];
+}
+	
 bool io_flush_sync(struct io_conn *conn)
 {
 	struct io_plan *plan = &conn->plan[IO_OUT];