#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# FS QA Test 052
#
# Test ext4's large_dir feature
#
# Create a directory with enough entries that we can exercise the large_dir
# code paths, and then verify that the resulting file system is valid using
# e2fsck.
#
. ./common/preamble
_begin_fstest auto quick dir

# Override the default cleanup function.
_cleanup()
{
	cd /
	rm -r -f $tmp.*
	if [ ! -z "$loop_mnt" ]; then
		$UMOUNT_PROG $loop_mnt
		rm -rf $loop_mnt
	fi
	[ ! -z "$fs_img" ] && rm -rf $fs_img
}

# Import common functions.
# . ./common/filter

# real QA test starts here

# Modify as appropriate.
_supported_fs ext4
_require_test
_require_loop
_require_test_program "dirstress"
_require_scratch_ext4_feature "large_dir"

echo "Silence is golden"

loop_mnt=$TEST_DIR/$seq.mnt
fs_img=$TEST_DIR/$seq.img
status=0

$XFS_IO_PROG -f -c "truncate 20G" $fs_img >>$seqres.full 2>&1

# We need to create enough files (400,000) so that using a file system
# with a 1k block size, the hash tree created will have three levels
# (which is the distringuishing characteristics of a large_dir versus
# non-large_dir).  We use no journal mode to decrease the run time of
# the test by 25%.
${MKFS_PROG} -t ${FSTYP} -b 1024 -N 400020 -O large_dir,^has_journal \
	     $fs_img 20G >> $seqres.full 2>&1 || _fail "mkfs failed"

mkdir -p $loop_mnt
_mount -o loop $fs_img $loop_mnt > /dev/null  2>&1 || \
	_fail "Couldn't do initial mount"

if ! $here/src/dirstress -c -d $loop_mnt -p 1 -f 400000 -C >$tmp.out 2>&1
then
    echo "    dirstress failed"
    cat $tmp.out >> $seqres.full
    echo "    dirstress failed" >> $seqres.full
    status=1
fi

$UMOUNT_PROG $loop_mnt || _fail "umount failed"
loop_mnt=

$E2FSCK_PROG -fn $fs_img >> $seqres.full 2>&1 || _fail "file system corrupted"
exit