#! /bin/bash
# FS QA Test 014
#
# Test copy-up of lowerdir with opaque xattr set.
#
# When copying up a directory with opaque xattr set, the xattr was copied up as
# well, after a remount the opaque flag is honored so the copied-up directory
# is treated as opaque, which causes files created in the lowerdir to be hidden
# when using multiple lower directories.
#
# This is fixed by "ovl: don't copy up opaqueness".
#
#-----------------------------------------------------------------------
# Copyright (c) 2016 Red Hat Inc. All Rights Reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#-----------------------------------------------------------------------
#

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.*
}

# get standard environment, filters and checks
. ./common/rc
. ./common/filter
. ./common/attr

# remove previous $seqres.full before test
rm -f $seqres.full

# real QA test starts here
_supported_fs overlay
_supported_os Linux
_require_test
_require_scratch

# Remove all files from previous tests
_scratch_mkfs

# Create multiple lowerdirs and upperdir, workdir, and testdir on lowerdir
lowerdir1=$SCRATCH_DEV/lower1
lowerdir2=$SCRATCH_DEV/lower2
upperdir=$SCRATCH_DEV/upper
workdir=$SCRATCH_DEV/workdir
mkdir -p $lowerdir1 $lowerdir2 $upperdir $workdir
mkdir -p $lowerdir1/testdir/d

# mount overlay with $lowerdir2 as upperdir, and remove & recreate testdir,
# make testdir on $lowerdir2 opaque
_overlay_mount_dirs $lowerdir1 $lowerdir2 $workdir $SCRATCH_DEV $SCRATCH_MNT
rm -rf $SCRATCH_MNT/testdir
mkdir -p $SCRATCH_MNT/testdir/visibledir
_scratch_unmount

# mount overlay again, with lowerdir1 and lowerdir2 as multiple lowerdirs,
# and create a new file in testdir, triggers copyup from lowerdir,
# copyup should not copy overlayfs private xattr
_overlay_mount_dirs "$lowerdir2:$lowerdir1" $upperdir $workdir \
		    $SCRATCH_DEV $SCRATCH_MNT
touch $SCRATCH_MNT/testdir/visiblefile

# umount and mount overlay again, buggy kernel treats the copied-up dir as
# opaque, visibledir is not seen in merged dir.
_scratch_unmount
_overlay_mount_dirs "$lowerdir2:$lowerdir1" $upperdir $workdir \
		    $SCRATCH_DEV $SCRATCH_MNT
ls $SCRATCH_MNT/testdir

# success, all done
status=0
exit
