[thirdparty/git.git] / t / t5319-multi-pack-index.sh

#!/bin/sh

test_description='multi-pack-indexes'
. ./test-lib.sh

objdir=.git/objects

midx_read_expect () {
	NUM_PACKS=$1
	NUM_OBJECTS=$2
	NUM_CHUNKS=$3
	OBJECT_DIR=$4
	EXTRA_CHUNKS="$5"
	{
		cat <<-EOF &&
		header: 4d494458 1 $NUM_CHUNKS $NUM_PACKS
		chunks: pack-names oid-fanout oid-lookup object-offsets$EXTRA_CHUNKS
		num_objects: $NUM_OBJECTS
		packs:
		EOF
		if test $NUM_PACKS -ge 1
		then
			ls $OBJECT_DIR/pack/ | grep idx | sort
		fi &&
		printf "object-dir: $OBJECT_DIR\n"
	} >expect &&
	test-tool read-midx $OBJECT_DIR >actual &&
	test_cmp expect actual
}

test_expect_success 'write midx with no packs' '
	test_when_finished rm -f pack/multi-pack-index &&
	git multi-pack-index --object-dir=. write &&
	midx_read_expect 0 0 4 .
'

generate_objects () {
	i=$1
	iii=$(printf '%03i' $i)
	{
		test-tool genrandom "bar" 200 &&
		test-tool genrandom "baz $iii" 50
	} >wide_delta_$iii &&
	{
		test-tool genrandom "foo"$i 100 &&
		test-tool genrandom "foo"$(( $i + 1 )) 100 &&
		test-tool genrandom "foo"$(( $i + 2 )) 100
	} >deep_delta_$iii &&
	{
		echo $iii &&
		test-tool genrandom "$iii" 8192
	} >file_$iii &&
	git update-index --add file_$iii deep_delta_$iii wide_delta_$iii
}

commit_and_list_objects () {
	{
		echo 101 &&
		test-tool genrandom 100 8192;
	} >file_101 &&
	git update-index --add file_101 &&
	tree=$(git write-tree) &&
	commit=$(git commit-tree $tree -p HEAD</dev/null) &&
	{
		echo $tree &&
		git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)	.*/\\1/"
	} >obj-list &&
	git reset --hard $commit
}

test_expect_success 'create objects' '
	test_commit initial &&
	for i in $(test_seq 1 5)
	do
		generate_objects $i
	done &&
	commit_and_list_objects
'

test_expect_success 'write midx with one v1 pack' '
	pack=$(git pack-objects --index-version=1 $objdir/pack/test <obj-list) &&
	test_when_finished rm $objdir/pack/test-$pack.pack \
		$objdir/pack/test-$pack.idx $objdir/pack/multi-pack-index &&
	git multi-pack-index --object-dir=$objdir write &&
	midx_read_expect 1 18 4 $objdir
'

midx_git_two_modes () {
	git -c core.multiPackIndex=false $1 >expect &&
	git -c core.multiPackIndex=true $1 >actual &&
	if [ "$2" = "sorted" ]
	then
		sort <expect >expect.sorted &&
		mv expect.sorted expect &&
		sort <actual >actual.sorted &&
		mv actual.sorted actual
	fi &&
	test_cmp expect actual
}

compare_results_with_midx () {
	MSG=$1
	test_expect_success "check normal git operations: $MSG" '
		midx_git_two_modes "rev-list --objects --all" &&
		midx_git_two_modes "log --raw" &&
		midx_git_two_modes "count-objects --verbose" &&
		midx_git_two_modes "cat-file --batch-all-objects --batch-check" &&
		midx_git_two_modes "cat-file --batch-all-objects --batch-check --unordered" sorted
	'
}

test_expect_success 'write midx with one v2 pack' '
	git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
	git multi-pack-index --object-dir=$objdir write &&
	midx_read_expect 1 18 4 $objdir
'

compare_results_with_midx "one v2 pack"

test_expect_success 'add more objects' '
	for i in $(test_seq 6 10)
	do
		generate_objects $i
	done &&
	commit_and_list_objects
'

test_expect_success 'write midx with two packs' '
	git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
	git multi-pack-index --object-dir=$objdir write &&
	midx_read_expect 2 34 4 $objdir
'

compare_results_with_midx "two packs"

test_expect_success 'add more packs' '
	for j in $(test_seq 11 20)
	do
		generate_objects $j &&
		commit_and_list_objects &&
		git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list
	done
'

compare_results_with_midx "mixed mode (two packs + extra)"

test_expect_success 'write midx with twelve packs' '
	git multi-pack-index --object-dir=$objdir write &&
	midx_read_expect 12 74 4 $objdir
'

compare_results_with_midx "twelve packs"

test_expect_success 'verify multi-pack-index success' '
	git multi-pack-index verify --object-dir=$objdir
'

# usage: corrupt_midx_and_verify <pos> <data> <objdir> <string>
corrupt_midx_and_verify() {
	POS=$1 &&
	DATA="${2:-\0}" &&
	OBJDIR=$3 &&
	GREPSTR="$4" &&
	COMMAND="$5" &&
	if test -z "$COMMAND"
	then
		COMMAND="git multi-pack-index verify --object-dir=$OBJDIR"
	fi &&
	FILE=$OBJDIR/pack/multi-pack-index &&
	chmod a+w $FILE &&
	test_when_finished mv midx-backup $FILE &&
	cp $FILE midx-backup &&
	printf "$DATA" | dd of="$FILE" bs=1 seek="$POS" conv=notrunc &&
	test_must_fail $COMMAND 2>test_err &&
	grep -v "^+" test_err >err &&
	test_i18ngrep "$GREPSTR" err
}

test_expect_success 'verify bad signature' '
	corrupt_midx_and_verify 0 "\00" $objdir \
		"multi-pack-index signature"
'

HASH_LEN=20
NUM_OBJECTS=74
MIDX_BYTE_VERSION=4
MIDX_BYTE_OID_VERSION=5
MIDX_BYTE_CHUNK_COUNT=6
MIDX_HEADER_SIZE=12
MIDX_BYTE_CHUNK_ID=$MIDX_HEADER_SIZE
MIDX_BYTE_CHUNK_OFFSET=$(($MIDX_HEADER_SIZE + 4))
MIDX_NUM_CHUNKS=5
MIDX_CHUNK_LOOKUP_WIDTH=12
MIDX_OFFSET_PACKNAMES=$(($MIDX_HEADER_SIZE + \
			 $MIDX_NUM_CHUNKS * $MIDX_CHUNK_LOOKUP_WIDTH))
MIDX_BYTE_PACKNAME_ORDER=$(($MIDX_OFFSET_PACKNAMES + 2))
MIDX_OFFSET_OID_FANOUT=$(($MIDX_OFFSET_PACKNAMES + 652))
MIDX_OID_FANOUT_WIDTH=4
MIDX_BYTE_OID_FANOUT_ORDER=$((MIDX_OFFSET_OID_FANOUT + 250 * $MIDX_OID_FANOUT_WIDTH + 1))
MIDX_OFFSET_OID_LOOKUP=$(($MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
MIDX_BYTE_OID_LOOKUP=$(($MIDX_OFFSET_OID_LOOKUP + 16 * $HASH_LEN))
MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
MIDX_OFFSET_WIDTH=8
MIDX_BYTE_PACK_INT_ID=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 2))
MIDX_BYTE_OFFSET=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 6))

test_expect_success 'verify bad version' '
	corrupt_midx_and_verify $MIDX_BYTE_VERSION "\00" $objdir \
		"multi-pack-index version"
'

test_expect_success 'verify bad OID version' '
	corrupt_midx_and_verify $MIDX_BYTE_OID_VERSION "\02" $objdir \
		"hash version"
'

test_expect_success 'verify truncated chunk count' '
	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\01" $objdir \
		"missing required"
'

test_expect_success 'verify extended chunk count' '
	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\07" $objdir \
		"terminating multi-pack-index chunk id appears earlier than expected"
'

test_expect_success 'verify missing required chunk' '
	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_ID "\01" $objdir \
		"missing required"
'

test_expect_success 'verify invalid chunk offset' '
	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_OFFSET "\01" $objdir \
		"invalid chunk offset (too large)"
'

test_expect_success 'verify packnames out of order' '
	corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "z" $objdir \
		"pack names out of order"
'

test_expect_success 'verify packnames out of order' '
	corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "a" $objdir \
		"failed to load pack"
'

test_expect_success 'verify oid fanout out of order' '
	corrupt_midx_and_verify $MIDX_BYTE_OID_FANOUT_ORDER "\01" $objdir \
		"oid fanout out of order"
'

test_expect_success 'verify oid lookup out of order' '
	corrupt_midx_and_verify $MIDX_BYTE_OID_LOOKUP "\00" $objdir \
		"oid lookup out of order"
'

test_expect_success 'verify incorrect pack-int-id' '
	corrupt_midx_and_verify $MIDX_BYTE_PACK_INT_ID "\07" $objdir \
		"bad pack-int-id"
'

test_expect_success 'verify incorrect offset' '
	corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\07" $objdir \
		"incorrect object offset"
'

test_expect_success 'git-fsck incorrect offset' '
	corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\07" $objdir \
		"incorrect object offset" \
		"git -c core.multipackindex=true fsck"
'

test_expect_success 'repack removes multi-pack-index' '
	test_path_is_file $objdir/pack/multi-pack-index &&
	GIT_TEST_MULTI_PACK_INDEX=0 git repack -adf &&
	test_path_is_missing $objdir/pack/multi-pack-index
'

compare_results_with_midx "after repack"

test_expect_success 'multi-pack-index and pack-bitmap' '
	git -c repack.writeBitmaps=true repack -ad &&
	git multi-pack-index write &&
	git rev-list --test-bitmap HEAD
'

test_expect_success 'multi-pack-index and alternates' '
	git init --bare alt.git &&
	echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
	echo content1 >file1 &&
	altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
	git cat-file blob $altblob &&
	git rev-list --all
'

compare_results_with_midx "with alternate (local midx)"

test_expect_success 'multi-pack-index in an alternate' '
	mv .git/objects/pack/* alt.git/objects/pack &&
	test_commit add_local_objects &&
	git repack --local &&
	git multi-pack-index write &&
	midx_read_expect 1 3 4 $objdir &&
	git reset --hard HEAD~1 &&
	rm -f .git/objects/pack/*
'

compare_results_with_midx "with alternate (remote midx)"

# usage: corrupt_data <file> <pos> [<data>]
corrupt_data () {
	file=$1
	pos=$2
	data="${3:-\0}"
	printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
}

# Force 64-bit offsets by manipulating the idx file.
# This makes the IDX file _incorrect_ so be careful to clean up after!
test_expect_success 'force some 64-bit offsets with pack-objects' '
	mkdir objects64 &&
	mkdir objects64/pack &&
	for i in $(test_seq 1 11)
	do
		generate_objects 11
	done &&
	commit_and_list_objects &&
	pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
	idx64=objects64/pack/test-64-$pack64.idx &&
	chmod u+w $idx64 &&
	corrupt_data $idx64 2999 "\02" &&
	midx64=$(git multi-pack-index --object-dir=objects64 write) &&
	midx_read_expect 1 63 5 objects64 " large-offsets"
'

test_expect_success 'verify multi-pack-index with 64-bit offsets' '
	git multi-pack-index verify --object-dir=objects64
'

NUM_OBJECTS=63
MIDX_OFFSET_OID_FANOUT=$((MIDX_OFFSET_PACKNAMES + 54))
MIDX_OFFSET_OID_LOOKUP=$((MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
MIDX_OFFSET_LARGE_OFFSETS=$(($MIDX_OFFSET_OBJECT_OFFSETS + $NUM_OBJECTS * $MIDX_OFFSET_WIDTH))
MIDX_BYTE_LARGE_OFFSET=$(($MIDX_OFFSET_LARGE_OFFSETS + 3))

test_expect_success 'verify incorrect 64-bit offset' '
	corrupt_midx_and_verify $MIDX_BYTE_LARGE_OFFSET "\07" objects64 \
		"incorrect object offset"
'

test_done
Commit	Line	Data
a3407730 DS	1	#!/bin/sh
	2
	3	test_description='multi-pack-indexes'
	4	. ./test-lib.sh
	5
c4d25228 DS	6	objdir=.git/objects
c4d25228 DS	7
4d80560c	8	midx_read_expect () {
396f2570	9	NUM_PACKS=$1
d7cacf29	10	NUM_OBJECTS=$2
662148c4 DS	11	NUM_CHUNKS=$3
	12	OBJECT_DIR=$4
	13	EXTRA_CHUNKS="$5"
3227565c DS	14	{
3227565c DS	15	cat <<-EOF &&
662148c4 DS	16	header: 4d494458 1 $NUM_CHUNKS $NUM_PACKS
662148c4 DS	17	chunks: pack-names oid-fanout oid-lookup object-offsets$EXTRA_CHUNKS
d7cacf29	18	num_objects: $NUM_OBJECTS
3227565c DS	19	packs:
	20	EOF
	21	if test $NUM_PACKS -ge 1
	22	then
662148c4	23	ls $OBJECT_DIR/pack/ \| grep idx \| sort
3227565c	24	fi &&
662148c4	25	printf "object-dir: $OBJECT_DIR\n"
3227565c	26	} >expect &&
662148c4	27	test-tool read-midx $OBJECT_DIR >actual &&
4d80560c DS	28	test_cmp expect actual
	29	}
	30
a3407730	31	test_expect_success 'write midx with no packs' '
fc59e748 DS	32	test_when_finished rm -f pack/multi-pack-index &&
fc59e748 DS	33	git multi-pack-index --object-dir=. write &&
662148c4	34	midx_read_expect 0 0 4 .
a3407730 DS	35	'
a3407730 DS	36
2c381335 DS	37	generate_objects () {
	38	i=$1
	39	iii=$(printf '%03i' $i)
	40	{
	41	test-tool genrandom "bar" 200 &&
	42	test-tool genrandom "baz $iii" 50
	43	} >wide_delta_$iii &&
	44	{
	45	test-tool genrandom "foo"$i 100 &&
	46	test-tool genrandom "foo"$(( $i + 1 )) 100 &&
	47	test-tool genrandom "foo"$(( $i + 2 )) 100
	48	} >deep_delta_$iii &&
	49	{
	50	echo $iii &&
	51	test-tool genrandom "$iii" 8192
	52	} >file_$iii &&
	53	git update-index --add file_$iii deep_delta_$iii wide_delta_$iii
	54	}
	55
	56	commit_and_list_objects () {
	57	{
	58	echo 101 &&
	59	test-tool genrandom 100 8192;
	60	} >file_101 &&
	61	git update-index --add file_101 &&
	62	tree=$(git write-tree) &&
	63	commit=$(git commit-tree $tree -p HEAD</dev/null) &&
	64	{
	65	echo $tree &&
	66	git ls-tree $tree \| sed -e "s/.* \\([0-9a-f]\\) ./\\1/"
	67	} >obj-list &&
	68	git reset --hard $commit
	69	}
	70
	71	test_expect_success 'create objects' '
	72	test_commit initial &&
	73	for i in $(test_seq 1 5)
	74	do
	75	generate_objects $i
	76	done &&
	77	commit_and_list_objects
	78	'
	79
	80	test_expect_success 'write midx with one v1 pack' '
c4d25228 DS	81	pack=$(git pack-objects --index-version=1 $objdir/pack/test <obj-list) &&
	82	test_when_finished rm $objdir/pack/test-$pack.pack \
	83	$objdir/pack/test-$pack.idx $objdir/pack/multi-pack-index &&
	84	git multi-pack-index --object-dir=$objdir write &&
	85	midx_read_expect 1 18 4 $objdir
2c381335 DS	86	'
2c381335 DS	87
c4d25228	88	midx_git_two_modes () {
b4a14394 JK	89	git -c core.multiPackIndex=false $1 >expect &&
b4a14394 JK	90	git -c core.multiPackIndex=true $1 >actual &&
e9ab2ed7 DS	91	if [ "$2" = "sorted" ]
e9ab2ed7 DS	92	then
b4a14394 JK	93	sort <expect >expect.sorted &&
	94	mv expect.sorted expect &&
	95	sort <actual >actual.sorted &&
	96	mv actual.sorted actual
e9ab2ed7	97	fi &&
c4d25228 DS	98	test_cmp expect actual
	99	}
	100
	101	compare_results_with_midx () {
	102	MSG=$1
	103	test_expect_success "check normal git operations: $MSG" '
	104	midx_git_two_modes "rev-list --objects --all" &&
e9ab2ed7 DS	105	midx_git_two_modes "log --raw" &&
e9ab2ed7 DS	106	midx_git_two_modes "count-objects --verbose" &&
5670ad98 JK	107	midx_git_two_modes "cat-file --batch-all-objects --batch-check" &&
5670ad98 JK	108	midx_git_two_modes "cat-file --batch-all-objects --batch-check --unordered" sorted
c4d25228 DS	109	'
	110	}
	111
2c381335	112	test_expect_success 'write midx with one v2 pack' '
c4d25228 DS	113	git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
	114	git multi-pack-index --object-dir=$objdir write &&
	115	midx_read_expect 1 18 4 $objdir
2c381335 DS	116	'
2c381335 DS	117
c4d25228 DS	118	compare_results_with_midx "one v2 pack"
c4d25228 DS	119
2c381335 DS	120	test_expect_success 'add more objects' '
	121	for i in $(test_seq 6 10)
	122	do
	123	generate_objects $i
	124	done &&
	125	commit_and_list_objects
	126	'
	127
	128	test_expect_success 'write midx with two packs' '
c4d25228 DS	129	git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
	130	git multi-pack-index --object-dir=$objdir write &&
	131	midx_read_expect 2 34 4 $objdir
2c381335 DS	132	'
2c381335 DS	133
c4d25228 DS	134	compare_results_with_midx "two packs"
c4d25228 DS	135
2c381335 DS	136	test_expect_success 'add more packs' '
	137	for j in $(test_seq 11 20)
	138	do
	139	generate_objects $j &&
	140	commit_and_list_objects &&
c4d25228	141	git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list
2c381335 DS	142	done
	143	'
	144
c4d25228 DS	145	compare_results_with_midx "mixed mode (two packs + extra)"
c4d25228 DS	146
2c381335	147	test_expect_success 'write midx with twelve packs' '
c4d25228 DS	148	git multi-pack-index --object-dir=$objdir write &&
c4d25228 DS	149	midx_read_expect 12 74 4 $objdir
662148c4 DS	150	'
662148c4 DS	151
c4d25228 DS	152	compare_results_with_midx "twelve packs"
c4d25228 DS	153
56ee7ff1 DS	154	test_expect_success 'verify multi-pack-index success' '
	155	git multi-pack-index verify --object-dir=$objdir
	156	'
	157
53ad0407 DS	158	# usage: corrupt_midx_and_verify <pos> <data> <objdir> <string>
	159	corrupt_midx_and_verify() {
	160	POS=$1 &&
	161	DATA="${2:-\0}" &&
	162	OBJDIR=$3 &&
	163	GREPSTR="$4" &&
66ec0390 DS	164	COMMAND="$5" &&
	165	if test -z "$COMMAND"
	166	then
	167	COMMAND="git multi-pack-index verify --object-dir=$OBJDIR"
	168	fi &&
53ad0407 DS	169	FILE=$OBJDIR/pack/multi-pack-index &&
	170	chmod a+w $FILE &&
	171	test_when_finished mv midx-backup $FILE &&
	172	cp $FILE midx-backup &&
	173	printf "$DATA" \| dd of="$FILE" bs=1 seek="$POS" conv=notrunc &&
66ec0390	174	test_must_fail $COMMAND 2>test_err &&
53ad0407 DS	175	grep -v "^+" test_err >err &&
	176	test_i18ngrep "$GREPSTR" err
	177	}
	178
	179	test_expect_success 'verify bad signature' '
	180	corrupt_midx_and_verify 0 "\00" $objdir \
	181	"multi-pack-index signature"
	182	'
	183
55c5648d	184	HASH_LEN=20
cc6af73c	185	NUM_OBJECTS=74
53ad0407 DS	186	MIDX_BYTE_VERSION=4
	187	MIDX_BYTE_OID_VERSION=5
	188	MIDX_BYTE_CHUNK_COUNT=6
d3f8e211 DS	189	MIDX_HEADER_SIZE=12
	190	MIDX_BYTE_CHUNK_ID=$MIDX_HEADER_SIZE
	191	MIDX_BYTE_CHUNK_OFFSET=$(($MIDX_HEADER_SIZE + 4))
8e72a3c3 DS	192	MIDX_NUM_CHUNKS=5
	193	MIDX_CHUNK_LOOKUP_WIDTH=12
	194	MIDX_OFFSET_PACKNAMES=$(($MIDX_HEADER_SIZE + \
	195	$MIDX_NUM_CHUNKS * $MIDX_CHUNK_LOOKUP_WIDTH))
	196	MIDX_BYTE_PACKNAME_ORDER=$(($MIDX_OFFSET_PACKNAMES + 2))
2f23d3f3 DS	197	MIDX_OFFSET_OID_FANOUT=$(($MIDX_OFFSET_PACKNAMES + 652))
	198	MIDX_OID_FANOUT_WIDTH=4
	199	MIDX_BYTE_OID_FANOUT_ORDER=$((MIDX_OFFSET_OID_FANOUT + 250 * $MIDX_OID_FANOUT_WIDTH + 1))
55c5648d DS	200	MIDX_OFFSET_OID_LOOKUP=$(($MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
55c5648d DS	201	MIDX_BYTE_OID_LOOKUP=$(($MIDX_OFFSET_OID_LOOKUP + 16 * $HASH_LEN))
cc6af73c DS	202	MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
	203	MIDX_OFFSET_WIDTH=8
	204	MIDX_BYTE_PACK_INT_ID=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 2))
	205	MIDX_BYTE_OFFSET=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 6))
53ad0407 DS	206
	207	test_expect_success 'verify bad version' '
	208	corrupt_midx_and_verify $MIDX_BYTE_VERSION "\00" $objdir \
	209	"multi-pack-index version"
	210	'
	211
	212	test_expect_success 'verify bad OID version' '
	213	corrupt_midx_and_verify $MIDX_BYTE_OID_VERSION "\02" $objdir \
	214	"hash version"
	215	'
	216
	217	test_expect_success 'verify truncated chunk count' '
	218	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\01" $objdir \
	219	"missing required"
	220	'
	221
	222	test_expect_success 'verify extended chunk count' '
	223	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\07" $objdir \
	224	"terminating multi-pack-index chunk id appears earlier than expected"
	225	'
	226
d3f8e211 DS	227	test_expect_success 'verify missing required chunk' '
	228	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_ID "\01" $objdir \
	229	"missing required"
	230	'
	231
	232	test_expect_success 'verify invalid chunk offset' '
	233	corrupt_midx_and_verify $MIDX_BYTE_CHUNK_OFFSET "\01" $objdir \
	234	"invalid chunk offset (too large)"
	235	'
	236
8e72a3c3 DS	237	test_expect_success 'verify packnames out of order' '
	238	corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "z" $objdir \
	239	"pack names out of order"
	240	'
	241
d4bf1d88 DS	242	test_expect_success 'verify packnames out of order' '
	243	corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "a" $objdir \
	244	"failed to load pack"
	245	'
	246
2f23d3f3 DS	247	test_expect_success 'verify oid fanout out of order' '
	248	corrupt_midx_and_verify $MIDX_BYTE_OID_FANOUT_ORDER "\01" $objdir \
	249	"oid fanout out of order"
	250	'
	251
55c5648d DS	252	test_expect_success 'verify oid lookup out of order' '
	253	corrupt_midx_and_verify $MIDX_BYTE_OID_LOOKUP "\00" $objdir \
	254	"oid lookup out of order"
	255	'
	256
cc6af73c DS	257	test_expect_success 'verify incorrect pack-int-id' '
	258	corrupt_midx_and_verify $MIDX_BYTE_PACK_INT_ID "\07" $objdir \
	259	"bad pack-int-id"
	260	'
	261
	262	test_expect_success 'verify incorrect offset' '
	263	corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\07" $objdir \
	264	"incorrect object offset"
	265	'
	266
66ec0390 DS	267	test_expect_success 'git-fsck incorrect offset' '
	268	corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\07" $objdir \
	269	"incorrect object offset" \
	270	"git -c core.multipackindex=true fsck"
	271	'
	272
525e18c0 DS	273	test_expect_success 'repack removes multi-pack-index' '
525e18c0 DS	274	test_path_is_file $objdir/pack/multi-pack-index &&
0465a505	275	GIT_TEST_MULTI_PACK_INDEX=0 git repack -adf &&
525e18c0 DS	276	test_path_is_missing $objdir/pack/multi-pack-index
	277	'
	278
	279	compare_results_with_midx "after repack"
	280
e9ab2ed7 DS	281	test_expect_success 'multi-pack-index and pack-bitmap' '
	282	git -c repack.writeBitmaps=true repack -ad &&
	283	git multi-pack-index write &&
	284	git rev-list --test-bitmap HEAD
	285	'
	286
29e2016b DS	287	test_expect_success 'multi-pack-index and alternates' '
	288	git init --bare alt.git &&
	289	echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
	290	echo content1 >file1 &&
	291	altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
	292	git cat-file blob $altblob &&
	293	git rev-list --all
	294	'
	295
	296	compare_results_with_midx "with alternate (local midx)"
	297
	298	test_expect_success 'multi-pack-index in an alternate' '
6a22d521 DS	299	mv .git/objects/pack/* alt.git/objects/pack &&
	300	test_commit add_local_objects &&
	301	git repack --local &&
	302	git multi-pack-index write &&
	303	midx_read_expect 1 3 4 $objdir &&
	304	git reset --hard HEAD~1 &&
	305	rm -f .git/objects/pack/*
29e2016b DS	306	'
	307
	308	compare_results_with_midx "with alternate (remote midx)"
	309
662148c4 DS	310	# usage: corrupt_data <file> <pos> [<data>]
	311	corrupt_data () {
	312	file=$1
	313	pos=$2
	314	data="${3:-\0}"
	315	printf "$data" \| dd of="$file" bs=1 seek="$pos" conv=notrunc
	316	}
	317
	318	# Force 64-bit offsets by manipulating the idx file.
	319	# This makes the IDX file _incorrect_ so be careful to clean up after!
	320	test_expect_success 'force some 64-bit offsets with pack-objects' '
	321	mkdir objects64 &&
	322	mkdir objects64/pack &&
	323	for i in $(test_seq 1 11)
	324	do
	325	generate_objects 11
	326	done &&
	327	commit_and_list_objects &&
	328	pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
	329	idx64=objects64/pack/test-64-$pack64.idx &&
	330	chmod u+w $idx64 &&
	331	corrupt_data $idx64 2999 "\02" &&
	332	midx64=$(git multi-pack-index --object-dir=objects64 write) &&
	333	midx_read_expect 1 63 5 objects64 " large-offsets"
2c381335 DS	334	'
2c381335 DS	335
56ee7ff1 DS	336	test_expect_success 'verify multi-pack-index with 64-bit offsets' '
	337	git multi-pack-index verify --object-dir=objects64
	338	'
	339
cc6af73c DS	340	NUM_OBJECTS=63
	341	MIDX_OFFSET_OID_FANOUT=$((MIDX_OFFSET_PACKNAMES + 54))
	342	MIDX_OFFSET_OID_LOOKUP=$((MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
	343	MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
	344	MIDX_OFFSET_LARGE_OFFSETS=$(($MIDX_OFFSET_OBJECT_OFFSETS + $NUM_OBJECTS * $MIDX_OFFSET_WIDTH))
	345	MIDX_BYTE_LARGE_OFFSET=$(($MIDX_OFFSET_LARGE_OFFSETS + 3))
	346
	347	test_expect_success 'verify incorrect 64-bit offset' '
	348	corrupt_midx_and_verify $MIDX_BYTE_LARGE_OFFSET "\07" objects64 \
	349	"incorrect object offset"
	350	'
	351
a3407730	352	test_done