#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2015, Oracle and/or its affiliates.  All Rights Reserved.
#
# FS QA Test No. 136
#
# Ensure that we can dedupe the last block of a file whose size isn't
# block-aligned.
#   - Create two 'a' files file whose size isn't block-aligned.
#   - Create two 'b' files file whose size isn't block-aligned.
#   - Dedupe the last block of file1 to the last block in file2 and file3.
#   - Check that files 1-2 match, and that 3-4 match.
#   - Check that the ends of 1-2 and 3-4 match, and that 1-3 don't match.
#
. ./common/preamble
_begin_fstest auto quick clone dedupe

# Override the default cleanup function.
_cleanup()
{
    cd /
    rm -rf $tmp.* $testdir
}

# Import common functions.
. ./common/filter
. ./common/reflink

# real QA test starts here
_require_test_dedupe

testdir=$TEST_DIR/test-$seq
rm -rf $testdir
mkdir $testdir

echo "Create the original files"
blksz=65536
_pwrite_byte 0x61 0 $((blksz + 37)) $testdir/file1 >> $seqres.full
_pwrite_byte 0x61 0 $((blksz + 37)) $testdir/file2 >> $seqres.full
_pwrite_byte 0x62 0 $((blksz + 37)) $testdir/file3 >> $seqres.full
_pwrite_byte 0x62 0 $((blksz + 37)) $testdir/file4 >> $seqres.full
_test_cycle_mount

md5sum $testdir/file1 | _filter_test_dir
md5sum $testdir/file2 | _filter_test_dir
md5sum $testdir/file3 | _filter_test_dir
md5sum $testdir/file4 | _filter_test_dir

c1="$(_md5_checksum $testdir/file1)"
c2="$(_md5_checksum $testdir/file2)"
c3="$(_md5_checksum $testdir/file3)"
c4="$(_md5_checksum $testdir/file4)"

test ${c1} = ${c2} || echo "file1 and file2 should match"
test ${c1} != ${c3} || echo "file1 and file3 should not match"
test ${c1} != ${c4} || echo "file1 and file4 should not match"
test ${c2} != ${c3} || echo "file2 and file3 should not match"
test ${c2} != ${c4} || echo "file2 and file4 should not match"
test ${c3} = ${c4} || echo "file3 and file4 should match"

echo "Dedupe the last blocks together"
echo "1->2"
_dedupe_range $testdir/file1 $blksz $testdir/file2 $blksz 37 >> $seqres.full
echo "1->3"
_dedupe_range $testdir/file1 $blksz $testdir/file3 $blksz 37 2>&1 | _filter_dedupe_error
_test_cycle_mount

md5sum $testdir/file1 | _filter_test_dir
md5sum $testdir/file2 | _filter_test_dir
md5sum $testdir/file3 | _filter_test_dir
md5sum $testdir/file4 | _filter_test_dir

c1="$(_md5_checksum $testdir/file1)"
c2="$(_md5_checksum $testdir/file2)"
c3="$(_md5_checksum $testdir/file3)"
c4="$(_md5_checksum $testdir/file4)"

echo "Compare files"
test ${c1} = ${c2} || echo "file1 and file2 should match"
test ${c1} != ${c3} || echo "file1 and file3 should not match"
test ${c1} != ${c4} || echo "file1 and file4 should not match"
test ${c2} != ${c3} || echo "file2 and file3 should not match"
test ${c2} != ${c4} || echo "file2 and file4 should not match"
test ${c3} = ${c4} || echo "file3 and file4 should match"

echo "Compare sections"
_compare_range $testdir/file1 $blksz $testdir/file2 $blksz 37 \
       || echo "End sections of files 1-2 do not match"

_compare_range $testdir/file1 $blksz $testdir/file3 $blksz 37 \
       || echo "End sections of files 1-3 do not match (intentional)"

_compare_range $testdir/file1 $blksz $testdir/file4 $blksz 37 \
       || echo "End sections of files 1-4 do not match (intentional)"

_compare_range $testdir/file2 $blksz $testdir/file3 $blksz 37 \
       || echo "End sections of files 2-3 do not match (intentional)"

_compare_range $testdir/file2 $blksz $testdir/file4 $blksz 37 \
       || echo "End sections of files 2-4 do not match (intentional)"

_compare_range $testdir/file3 $blksz $testdir/file4 $blksz 37 \
       || echo "End sections of files 3-4 do not match"

# success, all done
status=0
exit