zdtm.sh: execute all test in NEW_PIDNS in addition (v2)

Now the most part of test cases may be executed in pidns.
By default all test cases are executed in current pidns, then
they are executed in new pidns again.

v2: remove the hard coded path to  test_init
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/zdtm.sh

@@ -25,8 +25,6 @@ static/xids00
 streaming/pipe_loop00
 streaming/pipe_shared00
 transition/file_read
-transition/fork
-static/zombie00
 static/sockets00
 static/sockets_spair
 static/sockets_dgram
@@ -40,12 +38,20 @@ static/socket_udp
 static/socket6_udp
 static/socket_udplite
 static/selfexe00
-static/file_fown
 static/unlink_fstat00
 static/unlink_fstat02
 static/eventfs00
 static/inotify00
 "
+# Duplicate list with pidns/ prefix
+TEST_LIST=$TEST_LIST$(echo $TEST_LIST | tr ' ' '\n' | sed 's#^#pidns/#')
+
+# These ones are not in pidns
+TEST_LIST=$TEST_LIST "
+static/zombie00
+transition/fork
+static/file_fown
+"
 
 UTS_TEST_LIST="
 static/utsname
@@ -60,16 +66,58 @@ transition/ipc
 "
 
 CRTOOLS=`pwd`/`dirname $0`/../crtools
+TINIT=`pwd`/`dirname $0`/zdtm/lib/test_init
 test -x $CRTOOLS || exit 1
+
 ARGS=""
 
+PID=""
+PIDNS=""
+
+start_test()
+{
+	local tdir=$1
+	local tname=$2
+
+	killall -9 $tname &> /dev/null
+	make -C $tdir cleanout
+
+	if [ -z "$PIDNS" ]; then
+		make -C $tdir $tname.pid
+		PID=`cat $test.pid` || return 1
+	else
+		killall -9 test_init
+		$TINIT  $tdir $tname || {
+			echo ERROR: fail to start $tdir/$tname
+			return 1;
+		}
+
+		PID=`ps h -C test_init -o pid`
+		PID=$((PID))
+	fi
+}
+
+stop_test()
+{
+	local tdir=$1
+	local tname=$2
+
+	if [ -z "$PIDNS" ]; then
+		make -C $tdir $tname.out
+	else
+		killall test_init
+	fi
+}
+
 save_fds()
 {
+	test -n "$PIDNS" && return 0
 	ls -l /proc/$1/fd | sed 's/\(-> \(pipe\|socket\)\):.*/\1/' | awk '{ print $9,$10,$11; }' > $2
 }
 
 diff_fds()
 {
+	test -n "$PIDNS" && return 0
 	if ! diff -up $1 $2; then
 		echo ERROR: Sets of descriptors are differ:
 		echo $1
@@ -80,7 +128,11 @@ diff_fds()
 
 run_test()
 {
-	local test=$ZP/$1
+	local test=$1
+
+	expr "$test" : 'pidns/' && PIDNS=1 || PIDNS=""
+	test=${ZP}/${test#pidns/}
+
 	shift
 	local args=$*
 	local tname=`basename $test`
@@ -89,24 +141,21 @@ run_test()
 
 	echo "Execute $test"
 
-	killall -9 $tname &> /dev/null
-	make -C $tdir cleanout $tname.pid
-
-	local pid ddump
-	pid=`cat $test.pid` || return 1
+	start_test $tdir $tname || return 1
 
-	kill -s 0 "$pid" || {
-		echo "Get a wrong pid '$pid'"
+	local ddump
+	kill -s 0 "$PID" || {
+		echo "Get a wrong pid '$PID'"
 		return 1
 	}
 
-	ddump=dump/$tname/$pid
+	ddump=dump/$tname/$PID
 	DUMP_PATH=`pwd`/$ddump
 
-	echo Dump $pid
+	echo Dump $PID
 	mkdir -p $ddump
-	save_fds $pid  $ddump/dump.fd
-	setsid $CRTOOLS dump -D $ddump -o dump.log -v 4 -t $pid $args $ARGS || {
+	save_fds $PID  $ddump/dump.fd
+	setsid $CRTOOLS dump -D $ddump -o dump.log -v 4 -t $PID $args $ARGS || {
 		echo WARNING: process $tname is left running for your debugging needs
 		return 1
 	}
@@ -121,15 +170,15 @@ run_test()
 			sleep 1
 		done
 
-		echo Restore $pid
-		setsid $CRTOOLS restore --log-pid -D $ddump -o restore.log -v 4 -d -t $pid $args || return 2
+		echo Restore $PID
+		setsid $CRTOOLS restore --log-pid -D $ddump -o restore.log -v 4 -d -t $PID $args || return 2
 
-		save_fds $pid  $ddump/restore.fd
+		save_fds $PID  $ddump/restore.fd
 		diff_fds $ddump/dump.fd $ddump/restore.fd || return 2
 	fi
 
-	echo Check results $pid
-	make -C $tdir $tname.out
+	echo Check results $PID
+	stop_test $tdir $tname
 	for i in `seq 50`; do
 		test -f $test.out && break
 		echo Waiting...
@@ -141,7 +190,7 @@ run_test()
 
 case_error()
 {
-	local test=$ZP/$1
+	test=${ZP}/${1#pidns/}
 	local test_log=`pwd`/$test.out
 
 	echo "Test: $test"