[klibc] [PATCH] ipconfig: check poll() return value

[Greg Thelen]

Check the poll() return value for error before inspecting its output.

Signed-off-by: Greg Thelen <gthelen at google.com>
---
 usr/kinit/ipconfig/main.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/usr/kinit/ipconfig/main.c b/usr/kinit/ipconfig/main.c
index 8782ae7f..37ca5734 100644
--- a/usr/kinit/ipconfig/main.c
+++ b/usr/kinit/ipconfig/main.c
@@ -408,7 +408,7 @@ static int loop(void)
 			prev = now;
 			gettimeofday(&now, NULL);
 
-			if ((fds[0].revents & POLLRDNORM)) {
+			if ((nr > 0) && (fds[0].revents & POLLRDNORM)) {
 				if (do_pkt_recv(pkt_fd, now.tv_sec) == 1)
 					break;
 			}
-- 
1.7.3.1