#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016 Red Hat Inc.  All Rights Reserved.
#
# FS QA Test 015
#
# SGID bit inheritance 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

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

# real QA test starts here
_supported_fs overlay
_require_scratch
_require_user
_require_group

# Remove all files from previous tests
_scratch_mkfs

# set umask to make output deterministic
umask 022

# Create test dir in lower dir and set sgid bit
lowerdir=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER
mkdir -p $lowerdir/dir
chown $qa_user:$qa_group $lowerdir/dir
chmod 2775 $lowerdir/dir
touch $lowerdir/dir/testdir
touch $lowerdir/dir/testfile
touch $lowerdir/dir/hardlink

# mount overlayfs, create new file and dir in parent dir with sgid bit set, new
# files and dirs all should inherit the sgid bit and the group
_scratch_mount

# new dir
mkdir $SCRATCH_MNT/dir/newdir
stat -c "%A %G" $SCRATCH_MNT/dir/newdir

# new file
touch $SCRATCH_MNT/dir/newfile
stat -c "%A %G" $SCRATCH_MNT/dir/newfile

# new dir over whiteout
rm -f $SCRATCH_MNT/dir/testdir
mkdir $SCRATCH_MNT/dir/testdir
stat -c "%A %G" $SCRATCH_MNT/dir/testdir

# new file over whiteout
rm -f $SCRATCH_MNT/dir/testfile
touch $SCRATCH_MNT/dir/testfile
stat -c "%A %G" $SCRATCH_MNT/dir/testfile

# new hardlink over whiteout
rm -f $SCRATCH_MNT/dir/hardlink
ln $SCRATCH_MNT/dir/testfile $SCRATCH_MNT/dir/hardlink
stat -c "%A %G" $SCRATCH_MNT/dir/hardlink

# success, all done
status=0
exit