tests/overlay/013

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016 Red Hat Inc.  All Rights Reserved.
#
# FS QA Test 013
#
# Test truncate running executable binaries from lower and upper dirs.
# truncate(2) should return ETXTBSY, not other errno nor segfault
#
# Commit 03bea6040932 ("ovl: get_write_access() in truncate") fixed this issue.
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_test_program "t_truncate_self"

# remove all files from previous runs
_scratch_mkfs

# copy test program to lower and upper dir
lowerdir=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER
upperdir=$OVL_BASE_SCRATCH_MNT/$OVL_UPPER
mkdir -p $lowerdir
mkdir -p $upperdir
cp $here/src/t_truncate_self $lowerdir/test_lower
cp $here/src/t_truncate_self $upperdir/test_upper

_scratch_mount

# run test program from lower and upper dir
# test programs truncate themselfs, all should fail with ETXTBSY
$SCRATCH_MNT/test_lower --may-succeed
$SCRATCH_MNT/test_upper

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