From 521493c0f1675b7ee408aa2dd846f49ba1a3f4e2 Mon Sep 17 00:00:00 2001
From: brain <brain@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Fri, 18 Aug 2006 16:42:06 +0000
Subject: [PATCH] Checking if child pid still exists, if it vanishes we exit

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@4954 e03df62e-2008-0410-955e-edbf42e46eb7
---
 src/inspircd.cpp | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/src/inspircd.cpp b/src/inspircd.cpp
index 9ebb92b1e..e8e93bcc5 100644
--- a/src/inspircd.cpp
+++ b/src/inspircd.cpp
@@ -107,10 +107,11 @@ void InspIRCd::Rehash(int status)
 
 void InspIRCd::SetSignals(bool SEGVHandler)
 {
-	signal (SIGALRM, SIG_IGN);
-	signal (SIGHUP, InspIRCd::Rehash);
-	signal (SIGPIPE, SIG_IGN);
-	signal (SIGTERM, InspIRCd::Exit);
+	signal(SIGALRM, SIG_IGN);
+	signal(SIGHUP, InspIRCd::Rehash);
+	signal(SIGPIPE, SIG_IGN);
+	signal(SIGTERM, InspIRCd::Exit);
+	signal(SIGCHLD, SIG_IGN);
 }
 
 bool InspIRCd::DaemonSeed()
@@ -122,9 +123,16 @@ bool InspIRCd::DaemonSeed()
 	{
 		/* We wait here for the child process to kill us,
 		 * so that the shell prompt doesnt come back over
-		 * the output */
-		while (1)
-			sleep(600);
+		 * the output.
+		 * Sending a kill with a signal of 0 just checks
+		 * if the child pid is still around. If theyre not,
+		 * they threw an error and we should give up.
+		 */
+		while (kill(childpid, 0) != -1)
+		{
+			sleep(1);
+		}
+		exit(ERROR);
 	}
 	setsid ();
 	umask (007);
-- 
2.39.5