#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2021 Google, Inc. All Rights Reserved.
#
# FS QA Test No. 050
#
# Test checkpoint and zeroout of journal via ioctl EXT4_IOC_CHECKPOINT
#

. ./common/preamble
_begin_fstest auto ioctl quick

# Import common functions.
. ./common/filter

# real QA test starts here
_supported_fs ext4

_require_scratch
_require_command "$DEBUGFS_PROG" debugfs

checkpoint_journal=$here/src/checkpoint_journal
_require_test_program "checkpoint_journal"

testdir="${SCRATCH_MNT}/testdir"

_scratch_mkfs_sized $((64 * 1024 * 1024)) >> $seqres.full 2>&1
_require_metadata_journaling $SCRATCH_DEV
_scratch_mount >> $seqres.full 2>&1
blocksize=$(_get_block_size $SCRATCH_MNT)
mkdir $testdir

# check if ioctl present, skip test if not present
$checkpoint_journal $SCRATCH_MNT --dry-run || _notrun "journal checkpoint ioctl not present on device"

# create some files to add some entries to journal
for i in {1..100}; do
	echo > $testdir/$i
done

# make sure these files get to the journal
sync --file-system $testdir/1

# call ioctl to checkpoint and zero-fill journal blocks
$checkpoint_journal $SCRATCH_MNT --erase=zeroout || _fail "ioctl returned error"

# check journal blocks zeroed out
$DEBUGFS_PROG $SCRATCH_DEV -R "cat <8>" 2> /dev/null | od >> $seqres.full
check=$($DEBUGFS_PROG $SCRATCH_DEV -R "cat <8>" 2> /dev/null | \
	    od --skip-bytes="$blocksize" -An -v | sed -e '/^[0 \t]*$/d')

[ ! -z "$check" ] && _fail "Journal was not zeroed"

_scratch_unmount >> $seqres.full 2>&1

echo "Silence is golden"

status=0
exit