From 1f765cc21bad15aa3cd59b8b30460bc7c9ded7f0 Mon Sep 17 00:00:00 2001
From: Roy Marples <roy@marples.name>
Date: Mon, 11 Feb 2008 21:43:34 +0000
Subject: [PATCH] When polling and interupted, continue as the signal will then
 be in our pipe.

---
 client.c | 12 ++++++++++--
 signal.c |  1 -
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/client.c b/client.c
index e4d1019e..3061a527 100644
--- a/client.c
+++ b/client.c
@@ -500,6 +500,10 @@ static int wait_for_packet (struct pollfd *fds, state_t *state,
 					timeout = TIMEOUT_MINI_INF;
 
 				retval = poll (fds, 2, timeout * 1000);
+				if (retval == -1 && errno == EINTR) {
+					retval = 0;
+					continue;
+				}
 				if (retval == 0)
 					_send_message (state, state->last_type,
 						       options);
@@ -530,8 +534,12 @@ static int wait_for_packet (struct pollfd *fds, state_t *state,
 		}
 		timeout *= 1000;
 		state->start = uptime ();
-		retval = poll (fds, iface->fd == -1 ? 1 : 2, timeout);
+		retval = poll (fds, 2, timeout);
 		state->timeout -= uptime () - state->start;
+		if (retval == -1 && errno == EINTR) {
+			retval = 0;
+			continue;
+		}
 		if (retval == 0 && iface->fd != -1 && state->timeout > 0)
 			_send_message (state, state->last_type, options);
 	}
@@ -1039,7 +1047,7 @@ int dhcp_run (const options_t *options, int *pidfd)
 	interface_t *iface;
 	state_t *state = NULL;
 	struct pollfd fds[] = {
-		{ -1, POLLIN, 0 },
+		{ -1, POLLIN | POLLERR | POLLPRI | POLLOUT | POLLERR | POLLHUP | POLLNVAL, 0 },
 		{ -1, POLLIN, 0 }
 	};
 	int retval = -1;
diff --git a/signal.c b/signal.c
index 37b59e8f..d37db632 100644
--- a/signal.c
+++ b/signal.c
@@ -88,7 +88,6 @@ int signal_read (struct pollfd *fd)
 	int sig = -1;
 
 	/* Pop a signal off the our stack */
-
 	if (signals[0]) {
 		unsigned int i = 0;
 		sig = signals[0];