Files
apfstests/tests/overlay/031
T
Darrick J. Wong a860a167d8 common: kill _supported_os
fstests only supports Linux, so get rid of this unnecessary predicate.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
2020-09-21 01:16:50 +08:00

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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2017 Huawei. All Rights Reserved.
#
# FS QA Test 031
#
# The unmerged and origined directories may contain invalid
# whiteouts when we change underlaying dir (e.g. clean up lowerdir)
# and remount overlay. This may lead to whiteouts exposure and
# rmdir failure.
#
seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"
here=`pwd`
tmp=/tmp/$$
status=1 # failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15
_cleanup()
{
cd /
rm -f $tmp.*
}
# create test directory and test file, mount overlayfs and remove
# testfile to create a whiteout in upper dir.
create_whiteout()
{
local lower=$1
local upper=$2
local work=$3
local file=$4
mkdir -p $lower/testdir
touch $lower/testdir/$file
_overlay_scratch_mount_dirs $lower $upper $work
rm -f $SCRATCH_MNT/testdir/$file
$UMOUNT_PROG $SCRATCH_MNT
}
# get standard environment, filters and checks
. ./common/rc
. ./common/filter
rm -f $seqres.full
# real QA test starts here
_supported_fs overlay
_require_scratch_nocheck
# remove all files from previous runs
_scratch_mkfs
# create test directorys and whiteout
lowerdir1=$OVL_BASE_SCRATCH_MNT/lower1
lowerdir2=$OVL_BASE_SCRATCH_MNT/lower2
upperdir=$OVL_BASE_SCRATCH_MNT/upper
workdir=$OVL_BASE_SCRATCH_MNT/workdir
# When overlay inode index feature is enabled, a workdir cannot be reused
# with a different upperdir. workdir1 in this test is used as the workdir
# when lowerdir1 is used as the upperdir.
workdir1=$OVL_BASE_SCRATCH_MNT/workdir1
testfile1=a
testfile2=b
mkdir -p $lowerdir1 $lowerdir2 $upperdir $workdir $workdir1
create_whiteout $lowerdir1 $upperdir $workdir $testfile1
# clean up the lower directory and mount overlay again,
# whiteout will expose.
rm -rf $lowerdir1/testdir
_overlay_scratch_mount_dirs $lowerdir1 $upperdir $workdir
ls $SCRATCH_MNT/testdir
# try to remove test dir from overlay dir, trigger ovl_remove_upper,
# it will not clean up the dir and lead to rmdir failure.
rm -rf $SCRATCH_MNT/testdir 2>&1 | _filter_scratch
# umount overlay again, create a new file with the same name and
# mount overlay again.
$UMOUNT_PROG $SCRATCH_MNT
touch $lowerdir1/testdir
_overlay_scratch_mount_dirs $lowerdir1 $upperdir $workdir
# try to remove test dir from overlay dir, trigger ovl_remove_and_whiteout,
# it will not clean up the dir and lead to residue.
rm -rf $SCRATCH_MNT/testdir 2>&1 | _filter_scratch
$UMOUNT_PROG $SCRATCH_MNT
# let lower dir have invalid whiteouts, repeat ls and rmdir test again.
rm -rf $lowerdir1/testdir
rm -rf $upperdir/testdir
create_whiteout $lowerdir2 $lowerdir1 $workdir1 $testfile1
rm -rf $lowerdir2/testdir
_overlay_scratch_mount_dirs "$lowerdir1:$lowerdir2" $upperdir $workdir
ls $SCRATCH_MNT/testdir
rm -rf $SCRATCH_MNT/testdir 2>&1 | _filter_scratch
$UMOUNT_PROG $SCRATCH_MNT
# let lower dir and upper dir both have invalid whiteouts, repeat ls and rmdir again.
rm -rf $lowerdir1/testdir
rm -rf $upperdir/testdir
create_whiteout $lowerdir1 $upperdir $workdir $testfile1
rm -rf $lowerdir1/testdir/$testfile1
create_whiteout $lowerdir2 $lowerdir1 $workdir1 $testfile2
_overlay_scratch_mount_dirs $lowerdir1 $upperdir $workdir
ls $SCRATCH_MNT/testdir
rm -rf $SCRATCH_MNT/testdir 2>&1 | _filter_scratch
# success, all done
echo "Silence is golden"
status=0
exit