From bc1f7e0712338f6bf3c03ed263a9bd2e5af280e5 Mon Sep 17 00:00:00 2001
From: Sagi Dayan <sagidayan@gmail.com>
Date: Wed, 2 Apr 2014 14:37:41 +0300
Subject: [PATCH] Signal Handler Added. - redy to deploy

---
 main.c | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/main.c b/main.c
index 75740b2..7926161 100644
--- a/main.c
+++ b/main.c
@@ -21,8 +21,10 @@ void FreeTokens(char** tokens) ;
 void checkIfQuit(char* word);
 int getFileNameIndex(char** args);
 void freeRemainderInArr(char** args, int beforLast);
+void sigHandler(int sig);
 
-
+//GLOBAL INT - THIS WILL HOLD CHILD PID OR -1 IF THERE IS NO CHILD
+int pidOfChild = -1;
 
 int main()
 {
@@ -37,7 +39,7 @@ int main()
 	if(getUserName(user_n) == ERROR)
 		goto quit;
 
-	signal(SIGINT, SIG_IGN); // ignore SIGINT
+	signal(SIGINT, sigHandler); // Change the default SIGINT handler
 
 	while(1)
 	{
@@ -113,9 +115,7 @@ int main()
  		return ERROR;
  	}
 	else if(pid == 0) // child
-	{
-		signal(SIGINT, SIG_DFL); // set the child SIGINT handler to default! -> ^C will kill child but not father.
-		
+	{	
 		if(writeToFile == true)
 		{
 			int i_lastArg = getFileNameIndex(args);
@@ -286,3 +286,15 @@ void freeRemainderInArr(char** args, int beforLast)
 	free(args[beforLast]);
 	args[beforLast - 1] = NULL;
 }
+
+/**
+ * This function will be calld when the SIGINT is invoked.
+ * only if there is a child, the "father" will kill it.
+ * @param sig - 
+ */
+void sigHandler(int sig)
+{
+	if(pidOfChild >= 0)
+		kill(pidOfChild, SIGINT);
+	pidOfChild = -1;
+}
\ No newline at end of file