#! /bin/sh

################################################################################
##                                                                            ##
## Copyright (c) 2009 FUJITSU LIMITED                                         ##
##                                                                            ##
## This program is free software;  you can redistribute it and#or modify      ##
## it under the terms of the GNU General Public License as published by       ##
## the Free Software Foundation; either version 2 of the License, or          ##
## (at your option) any later version.                                        ##
##                                                                            ##
## This program is distributed in the hope that it will be useful, but        ##
## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ##
## or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License   ##
## for more details.                                                          ##
##                                                                            ##
## You should have received a copy of the GNU General Public License          ##
## along with this program;  if not, write to the Free Software               ##
## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA    ##
##                                                                            ##
## Author: Li Zefan <lizf@cn.fujitsu.com>                                     ##
## Restructure for LTP: Shi Weihua <shiwh@cn.fujitsu.com>                     ##
## Added memcg enable/disable functinality: Rishikesh K Rajak		      ##
##						<risrajak@linux.vnet.ibm.com  ##
##                                                                            ##
################################################################################

export TCID="memcg_function_test"
export TST_TOTAL=38
export TST_COUNT=0

. memcg_lib.sh || exit 1

# Case 1 - 10: Test the management and counting of memory
testcase_1()
{
	test_mem_stat "--mmap-anon" $PAGESIZE "rss" $PAGESIZE 0
}

testcase_2()
{
	test_mem_stat "--mmap-file" $PAGESIZE "rss" 0 0
}

testcase_3()
{
	test_mem_stat "--shm -k 3" $PAGESIZE "rss" 0 0
}

testcase_4()
{
	test_mem_stat "--mmap-anon --mmap-file --shm" $PAGESIZE "rss" \
		$PAGESIZE 0
}

testcase_5()
{
	test_mem_stat "--mmap-lock1" $PAGESIZE "rss" $PAGESIZE 0
}

testcase_6()
{
	test_mem_stat "--mmap-anon" $PAGESIZE "rss" $PAGESIZE 1
}

testcase_7()
{
	test_mem_stat "--mmap-file" $PAGESIZE "rss" 0 1
}

testcase_8()
{
	test_mem_stat "--shm -k 8" $PAGESIZE "rss" 0 1
}

testcase_9()
{
	test_mem_stat "--mmap-anon --mmap-file --shm" $PAGESIZE "rss" \
		$PAGESIZE 1
}

testcase_10()
{
	test_mem_stat "--mmap-lock1" $PAGESIZE "rss" $PAGESIZE 1
}

# Case 11 - 13: Test memory.failcnt
testcase_11()
{
	echo $PAGESIZE > memory.limit_in_bytes
	malloc_free_memory "--mmap-anon" $(($PAGESIZE*2))
	test_failcnt "memory.failcnt"
}

testcase_12()
{
	echo $PAGESIZE > memory.limit_in_bytes
	malloc_free_memory "--mmap-file" $(($PAGESIZE*2))
	test_failcnt "memory.failcnt"
}

testcase_13()
{
	echo $PAGESIZE > memory.limit_in_bytes
	malloc_free_memory "--shm" $(($PAGESIZE*2))
	test_failcnt "memory.failcnt"
}

# Case 14 - 15: Test mmap(locked) + alloc_mem > limit_in_bytes
testcase_14()
{
	test_proc_kill $PAGESIZE "--mmap-lock1" $((PAGESIZE*2)) 0
}

testcase_15()
{
	test_proc_kill $PAGESIZE "--mmap-lock2" $((PAGESIZE*2)) 0
}

# Case 16 - 18: Test swapoff + alloc_mem > limi_in_bytes
testcase_16()
{
	swapoff -a
	test_proc_kill $PAGESIZE "--mmap-anon" $((PAGESIZE*2)) 0
	swapon -a
}

testcase_17()
{
	swapoff -a
	test_proc_kill $PAGESIZE "--mmap-file" $((PAGESIZE*2)) 0
	swapon -a
}

testcase_18()
{
	swapoff -a
	test_proc_kill $PAGESIZE "--shm -k 18" $((PAGESIZE*2)) 0
	swapon -a
}

# Case 19 - 21: Test limit_in_bytes == 0
testcase_19()
{
	test_proc_kill 0 "--mmap-anon" $PAGESIZE 0
}

testcase_20()
{
	test_proc_kill 0 "--mmap-file" $PAGESIZE 0
}

testcase_21()
{
	test_proc_kill 0 "--shm -k 21" $PAGESIZE 0
}

# Case 22 - 24: Test limit_in_bytes will be aligned to PAGESIZE
testcase_22()
{
	test_limit_in_bytes $((PAGESIZE-1)) 0
}

testcase_23()
{
	test_limit_in_bytes $((PAGESIZE+1)) 0
}

testcase_24()
{
	test_limit_in_bytes 1 0
}

# Case 25 - 28: Test invaild memory.limit_in_bytes
testcase_25()
{
	echo -1 > memory.limit_in_bytes 2> /dev/null
	ret=$?
	tst_kvercmp 2 6 31
	if [ $? -eq 0 ]; then
		result $(( !($ret != 0) ))  "return value is $ret"
	else
		result $(( !($ret == 0) ))  "return value is $ret"
	fi
}

testcase_26()
{
	echo 1.0 > memory.limit_in_bytes 2> /dev/null
	result $(( !($? != 0) )) "return value is $?"
}

testcase_27()
{
	echo 1xx > memory.limit_in_bytes 2> /dev/null
	result $(( !($? != 0) )) "return value is $?"
}

testcase_28()
{
	echo xx > memory.limit_in_bytes 2> /dev/null
	result $(( !($? != 0) )) "return value is $?"
}

# Case 29 - 35: Test memory.force_empty
testcase_29()
{
	$TEST_PATH/memcg_process --mmap-anon -s $PAGESIZE &
	pid=$!
	sleep 1
	echo $pid > tasks
	kill -s USR1 $pid 2> /dev/null
	sleep 1
	echo $pid > ../tasks

	# This expects that there is swap configured
	echo 1 > memory.force_empty
	if [ $? -eq 0 ]; then
		result $PASS "force memory succeeded"
	else
		result $FAIL "force memory failed"
	fi

	kill -s INT $pid 2> /dev/null
}

testcase_30()
{
	$TEST_PATH/memcg_process --mmap-lock2 -s $PAGESIZE &
	pid=$!
	sleep 1
	echo $pid > tasks
	kill -s USR1 $pid 2> /dev/null
	sleep 1

	echo 1 > memory.force_empty 2> /dev/null
	if [ $? -ne 0 ]; then
		result $PASS "force memory failed as expected"
	else
		result $FAIL "force memory should fail"
	fi

	kill -s INT $pid 2> /dev/null
}

testcase_31()
{
	echo 0 > memory.force_empty 2> /dev/null
	result $? "return value is $?"
}

testcase_32()
{
	echo 1.0 > memory.force_empty 2> /dev/null
	result $? "return value is $?"
}

testcase_33()
{
	echo 1xx > memory.force_empty 2> /dev/null
	result $? "return value is $?"
}

testcase_34()
{
	echo xx > memory.force_empty 2> /dev/null
	result $? "return value is $?"
}

testcase_35()
{
	# writing to non-empty top mem cgroup's force_empty
	# should return failure
	echo 1 > /dev/memcg/memory.force_empty 2> /dev/null
	result $(( !$? )) "return value is $?"
}

# Case 36 - 38: Test that group and subgroup have no relationship
testcase_36()
{
	test_subgroup $PAGESIZE $((2*PAGESIZE))
}

testcase_37()
{
	test_subgroup $PAGESIZE $PAGESIZE
}

testcase_38()
{
	test_subgroup $PAGESIZE 0
}

shmmax=`cat /proc/sys/kernel/shmmax`
if [ $shmmax -lt $HUGEPAGESIZE ]; then
	echo $(($HUGEPAGESIZE)) > /proc/sys/kernel/shmmax
fi

# Run all the test cases
for i in $(seq 1 $TST_TOTAL)
do
	export TST_COUNT=$(( $TST_COUNT + 1 ))
	cur_id=$i

	do_mount
	if [ $? -ne 0 ]; then
		echo "Cannot create memcg"
		exit 1
	fi

	# prepare
	mkdir /dev/memcg/$i 2> /dev/null
	cd /dev/memcg/$i

	# run the case
	testcase_$i

	# clean up
	sleep 1
	cd $TEST_PATH
	rmdir /dev/memcg/$i

	cleanup
done

echo $shmmax > /proc/sys/kernel/shmmax

if [ $failed -ne 0 ]; then
	exit $failed
else
	exit 0
fi