io: don't fail if we get a signal.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/ccan/io/poll.c b/ccan/io/poll.c
index 3354abe01a2bae38ae6728b9f9f07522053b90b2..b005a97e4b1d07879a4e281a8d48276baaac2fa1 100644 (file)
--- a/ccan/io/poll.c
+++ b/ccan/io/poll.c
@@ -280,8 +280,13 @@ void *io_loop(struct timers *timers, struct timer **expired)
                }
 
                r = pollfn(pollfds, num_fds, ms_timeout);
-               if (r < 0)
+               if (r < 0) {
+                       /* Signals shouldn't break us, unless they set
+                        * io_loop_return. */
+                       if (errno == EINTR)
+                               continue;
                        break;
+               }
 
                for (i = 0; i < num_fds && !io_loop_return; i++) {
                        struct io_conn *c = (void *)fds[i];