X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fio%2Fbackend.h;h=e2090ff14068ebe0a34317941bb8efc6f7cb9a0a;hp=77d51dda9bf1825a6e02a6be85b3a0f3184c5804;hb=12ab811533406e22b78ce8b227474f1056375ae4;hpb=e40f5c50a7a930fc98974936b7366b498ebf984c

diff --git a/ccan/io/backend.h b/ccan/io/backend.h
index 77d51dda..e2090ff1 100644
--- a/ccan/io/backend.h
+++ b/ccan/io/backend.h
@@ -3,6 +3,10 @@
 #define CCAN_IO_BACKEND_H
 #include <stdbool.h>
 #include <ccan/timer/timer.h>
+#include <poll.h>
+
+/* A setting for actions to always run (eg. zero-length reads). */
+#define POLLALWAYS (((POLLIN|POLLOUT) + 1) & ~((POLLIN|POLLOUT)))
 
 struct io_alloc {
 	void *(*alloc)(size_t size);