apfstests/tests/overlay/025

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2017 Red Hat Inc.  All Rights Reserved.
#
# FS QA Test 025
#
# Overlayfs failed to get posix acls if lower or upper
# fs is tmpfs.
# Kernel commit below fixed it.
# 5201dc449e4b ovl: use cached acl on underlying layer
#
# This reproducer was originally written by
#     Miklos Szeredi <mszeredi@redhat.com>
#
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 /
	$UMOUNT_PROG $tmpfsdir/mnt
	$UMOUNT_PROG $tmpfsdir
	rm -rf $tmpfsdir
	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

# Modify as appropriate.
_supported_fs overlay
_supported_os Linux
_require_user
_require_tmpfs

# create a tmpfs in $TEST_DIR
tmpfsdir=$TEST_DIR/tmpfs
mkdir -p $tmpfsdir
$MOUNT_PROG -t tmpfs tmpfs $tmpfsdir

mkdir -p $tmpfsdir/{lower,upper,work,mnt}
mkdir -p -m 0 $tmpfsdir/upper/testd
# grant permission for $qa_user
setfacl -m u:$qa_user:rx $tmpfsdir/upper/testd

# mount overlay using dirs in tmpfs
_overlay_mount_dirs $tmpfsdir/{lower,upper,work,overlay,mnt}

# user accessing test dir, should be OKay
_user_do "ls $tmpfsdir/mnt/testd"

echo "Silence is golden"
# success, all done
status=0
exit