tests: ubifs_tools: fsck_tests: Add cycle mount+fsck test

Do fsstress and fsck, check whether there are any files(and their data)
are lost after fsck. This testcase mainly checks whether fsck.ubifs could
corrupt the filesystem content in common case.

Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

2 files changed, 156 insertions, 1 deletions

diff --git a/tests/ubifs_tools-tests/Makemodule.am b/tests/ubifs_tools-tests/Makemodule.am
index 6b53398..68c77a6 100644
--- a/tests/ubifs_tools-tests/Makemodule.am
+++ b/tests/ubifs_tools-tests/Makemodule.am
@@ -1,3 +1,4 @@
 test_SCRIPTS += \
 	tests/ubifs_tools-tests/lib/common.sh \
-	tests/ubifs_tools-tests/fsck_tests/authentication_refuse.sh
+	tests/ubifs_tools-tests/fsck_tests/authentication_refuse.sh \
+	tests/ubifs_tools-tests/fsck_tests/cycle_mount_fsck_check.sh
diff --git a/tests/ubifs_tools-tests/fsck_tests/cycle_mount_fsck_check.sh.in b/tests/ubifs_tools-tests/fsck_tests/cycle_mount_fsck_check.sh.in
new file mode 100755
index 0000000..c9972e2
--- /dev/null
+++ b/tests/ubifs_tools-tests/fsck_tests/cycle_mount_fsck_check.sh.in
@@ -0,0 +1,154 @@
+#!/bin/sh
+# Copyright (c), 2024, Huawei Technologies Co, Ltd.
+# Author: Zhihao Cheng <chengzhihao1@huawei.com>
+#
+# Test Description:
+# Do many cycles of mount/fsstress/umount/fsck/mount, check whether the
+# filesystem content before fsck and after fsck are consistent.
+# Running time: 10h
+
+TESTBINDIR=@TESTBINDIR@
+source $TESTBINDIR/common.sh
+
+ID="0xec,0xa1,0x00,0x15" # 128M 128KB 2KB 512-sub-page
+
+function run_test()
+{
+	encryption=$1
+	modprobe nandsim id_bytes=$ID
+	mtdnum="$(find_mtd_device "$nandsim_patt")"
+	flash_eraseall /dev/mtd$mtdnum
+
+	dmesg -c > /dev/null
+
+	modprobe ubi mtd="$mtdnum,2048" || fatal "modprobe ubi fail"
+	ubimkvol -N vol_test -m -n 0 /dev/ubi$UBI_NUM || fatal "mkvol fail"
+	modprobe ubifs || fatal "modprobe ubifs fail"
+
+	echo "Do cycle mount+umount+fsck+check_fs_content test ($encryption)"
+
+	if [[ "$encryption" == "encrypted" ]]; then
+		encryption_gen_key
+	fi
+
+	round=0
+	while [[ $round -lt 20 ]]
+	do
+		echo "---------------------- ROUND $round ----------------------"
+		let round=$round+1
+
+		mount_ubifs $DEV $MNT "noauthentication" "noatime" || fatal "mount ubifs fail"
+		if [[ "$encryption" == "encrypted" ]]; then
+			encryption_set_key $MNT
+		fi
+
+		per=`df -Th | grep ubifs | awk '{print $6}'`;
+		if [[ ${per%?} -gt 95 ]]; then
+			# Used > 95%
+			echo "Clean files"
+			rm -rf $MNT/*
+			check_err_msg
+		fi
+
+		fsstress -d $MNT -l0 -p4 -n10000 &
+
+		sleep $((RANDOM % 30))
+
+		ps -e | grep -w fsstress > /dev/null 2>&1
+		while [ $? -eq 0 ]
+		do
+			killall -9 fsstress > /dev/null 2>&1
+			sleep 1
+			ps -e | grep -w fsstress > /dev/null 2>&1
+		done
+
+		per=`df -Th | grep ubifs | awk '{print $6}'`;
+		if [[ ${per%?} -gt 95 ]]; then
+			dmesg -c > /dev/null # The ENOSPC error messages may exist
+		else
+			check_err_msg # Make sure new operations are okay after fsck
+		fi
+		sync
+
+		# Record filesystem information
+		rm -f $TMP_FILE 2>/dev/null
+		read_dir $MNT "md5sum"
+
+		while true
+		do
+			res=`mount | grep "$MNT"`
+			if [[ "$res" == "" ]]
+			then
+				break;
+			fi
+			umount $MNT
+			sleep 0.1
+		done
+
+		fsck.ubifs -a $DEV 2>&1 > $LOG_FILE
+		res=$?
+		cat $LOG_FILE
+		if [[ $res != $FSCK_OK ]]
+		then
+			# The lpt nodes could be parsed incorrectly because the lpt disk
+			# layout is too simple. See details in
+			# https://lore.kernel.org/linux-mtd/97ca7fe4-4ad4-edd1-e97a-1d540aeabe2d@huawei.com/
+			log=`cat $LOG_FILE | grep "dbg_check_ltab_lnum: invalid empty space in LEB"`
+			if [[ "$log" == "" ]]; then
+				fatal "fsck fail $res"
+			fi
+			if [[ $res != $FSCK_NONDESTRUCT ]]; then
+				fatal "fsck fail $res"
+			fi
+		fi
+
+		enable_chkfs
+
+		mount_ubifs $DEV $MNT "noauthentication" "noatime"
+		res=$?
+		if [[ $res != 0 ]]
+		then
+			fatal "mount fail $res"
+		fi
+
+		if [[ "$encryption" == "encrypted" ]]; then
+			encryption_set_key $MNT
+		fi
+
+		du -sh $MNT > /dev/null  # Ensure that all files are accessible
+		ret=$?
+		if [[ $ret != 0 ]]; then
+			fatal "Cannot access all files"
+		fi
+		check_err_msg
+
+		# Check filesystem information
+		parse_dir "md5sum"
+		rm -f $TMP_FILE 2>/dev/null
+
+		umount $MNT
+		res=$?
+		if [[ $res != 0 ]]
+		then
+			fatal "unmount fail $res"
+		fi
+
+		check_err_msg
+
+		disable_chkfs
+	done
+
+	modprobe -r ubifs
+	modprobe -r ubi
+	modprobe -r nandsim
+}
+
+check_fsstress
+start_t=$(date +%s)
+for encryption in "encrypted" "noencrypted"; do
+	run_test $encryption
+done
+end_t=$(date +%s)
+time_cost=$(( end_t - start_t ))
+echo "Success, cost $time_cost seconds"
+exit 0