apfstests/tests/overlay/008

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016 Red Hat Inc.  All Rights Reserved.
#
# FS QA Test 008
#
# Create file/dir over whiteout by another user, uid/gid of the file/dir should
# be current fsuid/fsgid, not the mounter's.
#
# This upstream kernel patch fixed the issue
# d0e13f5 ovl: fix uid/gid when creating over whiteout
#
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

rm -f $seqres.full

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

# Remove all files from previous tests
_scratch_mkfs

# Create test file on lower dir, and chown to fsgqa user
lowerdir=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER
mkdir -p $lowerdir
touch $lowerdir/testfile
chown fsgqa:fsgqa $lowerdir/testfile

# chown upperdir to fsgqa user, so new file/dir can be created by the user
upperdir=$OVL_BASE_SCRATCH_MNT/$OVL_UPPER
mkdir -p $upperdir
chown fsgqa:fsgqa $upperdir

_scratch_mount

# Remove testfile, whiteout created in lowerdir
rm -f $SCRATCH_MNT/testfile

# Create new file over whiteout and check the file ownership
_user_do "touch $SCRATCH_MNT/testfile"
stat -c %U:%G-%F $SCRATCH_MNT/testfile

# Create new dir over whiteout and check ownership again
rm -f $SCRATCH_MNT/testfile
_user_do "mkdir $SCRATCH_MNT/testfile"
stat -c %U:%G-%F $SCRATCH_MNT/testfile

# success, all done
status=0
exit