tests/generic/701

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2022  Red Hat Inc. All Rights Reserved.
#
# FS QA Test No. 701
#
# Verify that i_blocks for truncated files larger than 4 GiB have correct
# values.
#
# This test verifies the problem fixed in kernel with commit
# 92fba084b79e exfat: fix i_blocks for files truncated over 4 GiB
#
. ./common/preamble
. ./common/filter

_begin_fstest auto

# Override the default cleanup function.
_cleanup()
{
	cd /
	rm -r -f $tmp.* $junk_dir
}

_supported_fs generic
_fixed_by_kernel_commit 92fba084b79e \
	"exfat: fix i_blocks for files truncated over 4 GiB"

_require_test
_require_fs_space $TEST_DIR $((5 * 1024 * 1024)) #kB

junk_dir=$TEST_DIR/$seq
junk_file=$junk_dir/junk
mkdir -p $junk_dir

_create_file_sized 5G $junk_file
if [ $? -ne 0 ]; then
	echo "Could not create 5G test file"
fi

truncate -s 4G $junk_file

block_size=`stat -c '%B' $junk_file`
iblocks_after_truncate=`stat -c '%b' $junk_file`
iblocks_expected=$((4 * 1024 * 1024 * 1024 / $block_size))

_within_tolerance "Number of allocated blocks after truncate" $iblocks_after_truncate $iblocks_expected 1% -v

status=0

exit