From b0a59bdcb3356eec66015bcdffd9a3fbaef0489a Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Fri, 25 Mar 2011 11:46:17 +1030
Subject: [PATCH 1/1] failtest: handle EINTR from poll.

I don't quite know why, but this started happening to me.  We should
handle it anyway.
---
 ccan/failtest/failtest.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/ccan/failtest/failtest.c b/ccan/failtest/failtest.c
index 0f2ab0c7..7a6f5220 100644
--- a/ccan/failtest/failtest.c
+++ b/ccan/failtest/failtest.c
@@ -483,8 +483,13 @@ static bool should_fail(struct failtest_call *call)
 		else
 			ret = poll(pfd, 2, failtest_timeout_ms);
 
-		if (ret <= 0)
+		if (ret == 0)
 			hand_down(SIGUSR1);
+		if (ret < 0) {
+			if (errno == EINTR)
+				continue;
+			err(1, "Poll returned %i", ret);
+		}
 
 		if (pfd[0].revents & POLLIN) {
 			ssize_t len;
-- 
2.39.2