#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2010 Christoph Hellwig.  All Rights Reserved.
# Copyright (c) 2010 Silicon Graphics, Inc.  All Rights Reserved.
#
# FS QA Test No. 221
#
# Check for file corruption when using the extent size hint on
# the normal data subvolume.
#
# http://oss.sgi.com/bugzilla/show_bug.cgi?id=874
#
# Based on a bug report and testcase from Geoffrey Wehrman <gwehrman@sgi.com>.
#
. ./common/preamble
_begin_fstest auto rw

# Override the default cleanup function.
_cleanup()
{
    rm -rf ${TDIR}
}

# Import common functions.

# real QA test starts here
_supported_fs xfs
_require_test
_require_fs_space $TEST_DIR 3200000

TDIR="${TEST_DIR}/t_holes"
NFILES="10"
EXTSIZE="256k"

# Create the test directory
mkdir ${TDIR}

# Per-directory extent size hints aren't particularly useful for files that
# are created on the realtime section.  Force the test file to be created on
# the data directory.  Do not change the rtinherit flag on $TEST_DIR because
# that will affect other tests.
_xfs_force_bdev data $TDIR

# Set the test directory extsize
$XFS_IO_PROG -c "extsize ${EXTSIZE}" ${TDIR}

# Create a set of holey files
echo "generating ${NFILES} files"

for i in $(seq 0 ${NFILES}); do
  $here/src/t_holes ${TDIR}/${i}
done

# Compare the files
echo "comparing files"
errcnt=0
j=0
for i in $(seq 0 ${NFILES}); do
    let j=$i+1
    while [ ${j} -lt ${NFILES} ] ; do
	if ! cmp ${TDIR}/${i} ${TDIR}/${j} ; then
	    let errcnt=$errcnt+1
	fi
	let j=$j+1
    done
done

echo "got ${errcnt} errors"

status=$errcnt
exit $status