mcexec: Don't forward SIGTSTP SIGTTIN SIGTTOUT to mckernel

Change-Id: I72bb74d6b98e1f0bf519c8f0fef742624a2a699a
Refs: #1425

test/issues/1425/C1425.sh

@@ -0,0 +1,43 @@
+#/bin/sh
+
+USELTP=1
+USEOSTEST=0
+
+. ../../common.sh
+
+issue="1425"
+tid=01
+
+STOPSIG_LIST="TSTP TTIN TTOU"
+
+for signame in ${STOPSIG_LIST}
+do
+	tname=`printf "C${issue}T%02d" ${tid}`
+	echo "*** ${tname} start *******************************"
+	sh ./check_stopsig.sh ${MCEXEC} ${signame}
+
+	if [ $? -eq 0 ]; then
+		echo "*** ${tname} PASSED ******************************"
+	else
+		echo "*** ${tname} FAILED ******************************"
+	fi
+	let tid++
+	echo ""
+done
+
+for tp in kill01 kill02 kill06 kill07 kill08 kill09 signal01 signal03 signal04 signal05
+do
+	tname=`printf "C${issue}T%02d" ${tid}`
+	echo "*** ${tname} start *******************************"
+	sudo $MCEXEC $LTPBIN/$tp 2>&1 | tee $tp.txt
+	ok=`grep PASS $tp.txt | wc -l`
+	ng=`grep FAIL $tp.txt | wc -l`
+	if [ $ng = 0 ]; then
+		echo "*** ${tname} PASSED ($ok)"
+	else
+		echo "*** ${tname} FAILED (ok=$ok ng=$ng)"
+	fi
+	let tid++
+	echo ""
+done
+