From 8d1af2b7fe1b6088811aafbdad127133457028fd Mon Sep 17 00:00:00 2001
From: Con Kolivas <kernel@kolivas.org>
Date: Thu, 27 Nov 2014 21:48:02 +1100
Subject: [PATCH] Check for presence of main process before trying to ping it
 in case the socket is pointing a new process

---
 src/ckpool.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/ckpool.c b/src/ckpool.c
index 252c9a7f..dc5feab6 100644
--- a/src/ckpool.c
+++ b/src/ckpool.c
@@ -350,8 +350,10 @@ bool ping_main(ckpool_t *ckp)
 {
 	char *buf;
 
+	if (unlikely(kill_pid(ckp->main.pid, 0)))
+		return false;
 	buf = send_recv_proc(&ckp->main, "ping");
-	if (!buf)
+	if (unlikely(!buf))
 		return false;
 	free(buf);
 	return true;