t/t5319-multi-pack-index.sh

   1 #!/bin/sh
   2
   3 test_description='multi-pack-indexes'
   4 . ./test-lib.sh
   5
   6 GIT_TEST_MULTI_PACK_INDEX=0
   7 objdir=.git/objects
   8
   9 HASH_LEN=$(test_oid rawsz)
  10
  11 midx_read_expect () {
  12         NUM_PACKS=$1
  13         NUM_OBJECTS=$2
  14         NUM_CHUNKS=$3
  15         OBJECT_DIR=$4
  16         EXTRA_CHUNKS="$5"
  17         {
  18                 cat <<-EOF &&
  19                 header: 4d494458 1 $HASH_LEN $NUM_CHUNKS $NUM_PACKS
  20                 chunks: pack-names oid-fanout oid-lookup object-offsets$EXTRA_CHUNKS
  21                 num_objects: $NUM_OBJECTS
  22                 packs:
  23                 EOF
  24                 if test $NUM_PACKS -ge 1
  25                 then
  26                         ls $OBJECT_DIR/pack/ | grep idx | sort
  27                 fi &&
  28                 printf "object-dir: $OBJECT_DIR\n"
  29         } >expect &&
  30         test-tool read-midx $OBJECT_DIR >actual &&
  31         test_cmp expect actual
  32 }
  33
  34 test_expect_success 'setup' '
  35         test_oid_cache <<-EOF
  36         idxoff sha1:2999
  37         idxoff sha256:3739
  38
  39         packnameoff sha1:652
  40         packnameoff sha256:940
  41
  42         fanoutoff sha1:1
  43         fanoutoff sha256:3
  44         EOF
  45 '
  46
  47 test_expect_success "don't write midx with no packs" '
  48         test_must_fail git multi-pack-index --object-dir=. write &&
  49         test_path_is_missing pack/multi-pack-index
  50 '
  51
  52 test_expect_success SHA1 'warn if a midx contains no oid' '
  53         cp "$TEST_DIRECTORY"/t5319/no-objects.midx $objdir/pack/multi-pack-index &&
  54         test_must_fail git multi-pack-index verify &&
  55         rm $objdir/pack/multi-pack-index
  56 '
  57
  58 generate_objects () {
  59         i=$1
  60         iii=$(printf '%03i' $i)
  61         {
  62                 test-tool genrandom "bar" 200 &&
  63                 test-tool genrandom "baz $iii" 50
  64         } >wide_delta_$iii &&
  65         {
  66                 test-tool genrandom "foo"$i 100 &&
  67                 test-tool genrandom "foo"$(( $i + 1 )) 100 &&
  68                 test-tool genrandom "foo"$(( $i + 2 )) 100
  69         } >deep_delta_$iii &&
  70         {
  71                 echo $iii &&
  72                 test-tool genrandom "$iii" 8192
  73         } >file_$iii &&
  74         git update-index --add file_$iii deep_delta_$iii wide_delta_$iii
  75 }
  76
  77 commit_and_list_objects () {
  78         {
  79                 echo 101 &&
  80                 test-tool genrandom 100 8192;
  81         } >file_101 &&
  82         git update-index --add file_101 &&
  83         tree=$(git write-tree) &&
  84         commit=$(git commit-tree $tree -p HEAD</dev/null) &&
  85         {
  86                 echo $tree &&
  87                 git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)        .*/\\1/"
  88         } >obj-list &&
  89         git reset --hard $commit
  90 }
  91
  92 test_expect_success 'create objects' '
  93         test_commit initial &&
  94         for i in $(test_seq 1 5)
  95         do
  96                 generate_objects $i
  97         done &&
  98         commit_and_list_objects
  99 '
 100
 101 test_expect_success 'write midx with one v1 pack' '
 102         pack=$(git pack-objects --index-version=1 $objdir/pack/test <obj-list) &&
 103         test_when_finished rm $objdir/pack/test-$pack.pack \
 104                 $objdir/pack/test-$pack.idx $objdir/pack/multi-pack-index &&
 105         git multi-pack-index --object-dir=$objdir write &&
 106         midx_read_expect 1 18 4 $objdir
 107 '
 108
 109 midx_git_two_modes () {
 110         git -c core.multiPackIndex=false $1 >expect &&
 111         git -c core.multiPackIndex=true $1 >actual &&
 112         if [ "$2" = "sorted" ]
 113         then
 114                 sort <expect >expect.sorted &&
 115                 mv expect.sorted expect &&
 116                 sort <actual >actual.sorted &&
 117                 mv actual.sorted actual
 118         fi &&
 119         test_cmp expect actual
 120 }
 121
 122 compare_results_with_midx () {
 123         MSG=$1
 124         test_expect_success "check normal git operations: $MSG" '
 125                 midx_git_two_modes "rev-list --objects --all" &&
 126                 midx_git_two_modes "log --raw" &&
 127                 midx_git_two_modes "count-objects --verbose" &&
 128                 midx_git_two_modes "cat-file --batch-all-objects --batch-check" &&
 129                 midx_git_two_modes "cat-file --batch-all-objects --batch-check --unordered" sorted
 130         '
 131 }
 132
 133 test_expect_success 'write midx with one v2 pack' '
 134         git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
 135         git multi-pack-index --object-dir=$objdir write &&
 136         midx_read_expect 1 18 4 $objdir
 137 '
 138
 139 compare_results_with_midx "one v2 pack"
 140
 141 test_expect_success 'corrupt idx reports errors' '
 142         idx=$(test-tool read-midx $objdir | grep "\.idx\$") &&
 143         mv $objdir/pack/$idx backup-$idx &&
 144         test_when_finished "mv backup-\$idx \$objdir/pack/\$idx" &&
 145
 146         # This is the minimum size for a sha-1 based .idx; this lets
 147         # us pass perfunctory tests, but anything that actually opens and reads
 148         # the idx file will complain.
 149         test_copy_bytes 1064 <backup-$idx >$objdir/pack/$idx &&
 150
 151         git -c core.multiPackIndex=true rev-list --objects --all 2>err &&
 152         grep "index unavailable" err
 153 '
 154
 155 test_expect_success 'add more objects' '
 156         for i in $(test_seq 6 10)
 157         do
 158                 generate_objects $i
 159         done &&
 160         commit_and_list_objects
 161 '
 162
 163 test_expect_success 'write midx with two packs' '
 164         git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
 165         git multi-pack-index --object-dir=$objdir write &&
 166         midx_read_expect 2 34 4 $objdir
 167 '
 168
 169 compare_results_with_midx "two packs"
 170
 171 test_expect_success 'write midx with --stdin-packs' '
 172         rm -fr $objdir/pack/multi-pack-index &&
 173
 174         idx="$(find $objdir/pack -name "test-2-*.idx")" &&
 175         basename "$idx" >in &&
 176
 177         git multi-pack-index write --stdin-packs <in &&
 178
 179         test-tool read-midx $objdir | grep "\.idx$" >packs &&
 180
 181         test_cmp packs in
 182 '
 183
 184 compare_results_with_midx "mixed mode (one pack + extra)"
 185
 186 test_expect_success 'write progress off for redirected stderr' '
 187         git multi-pack-index --object-dir=$objdir write 2>err &&
 188         test_line_count = 0 err
 189 '
 190
 191 test_expect_success 'write force progress on for stderr' '
 192         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir write --progress 2>err &&
 193         test_file_not_empty err
 194 '
 195
 196 test_expect_success 'write with the --no-progress option' '
 197         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir write --no-progress 2>err &&
 198         test_line_count = 0 err
 199 '
 200
 201 test_expect_success 'add more packs' '
 202         for j in $(test_seq 11 20)
 203         do
 204                 generate_objects $j &&
 205                 commit_and_list_objects &&
 206                 git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list
 207         done
 208 '
 209
 210 compare_results_with_midx "mixed mode (two packs + extra)"
 211
 212 test_expect_success 'write midx with twelve packs' '
 213         git multi-pack-index --object-dir=$objdir write &&
 214         midx_read_expect 12 74 4 $objdir
 215 '
 216
 217 compare_results_with_midx "twelve packs"
 218
 219 test_expect_success 'multi-pack-index *.rev cleanup with --object-dir' '
 220         git init repo &&
 221         git clone -s repo alternate &&
 222
 223         test_when_finished "rm -rf repo alternate" &&
 224
 225         (
 226                 cd repo &&
 227                 test_commit base &&
 228                 git repack -d
 229         ) &&
 230
 231         ours="alternate/.git/objects/pack/multi-pack-index-123.rev" &&
 232         theirs="repo/.git/objects/pack/multi-pack-index-abc.rev" &&
 233         touch "$ours" "$theirs" &&
 234
 235         (
 236                 cd alternate &&
 237                 git multi-pack-index --object-dir ../repo/.git/objects write
 238         ) &&
 239
 240         # writing a midx in "repo" should not remove the .rev file in the
 241         # alternate
 242         test_path_is_file repo/.git/objects/pack/multi-pack-index &&
 243         test_path_is_file $ours &&
 244         test_path_is_missing $theirs
 245 '
 246
 247 test_expect_success 'warn on improper hash version' '
 248         git init --object-format=sha1 sha1 &&
 249         (
 250                 cd sha1 &&
 251                 git config core.multiPackIndex true &&
 252                 test_commit 1 &&
 253                 git repack -a &&
 254                 git multi-pack-index write &&
 255                 mv .git/objects/pack/multi-pack-index ../mpi-sha1
 256         ) &&
 257         git init --object-format=sha256 sha256 &&
 258         (
 259                 cd sha256 &&
 260                 git config core.multiPackIndex true &&
 261                 test_commit 1 &&
 262                 git repack -a &&
 263                 git multi-pack-index write &&
 264                 mv .git/objects/pack/multi-pack-index ../mpi-sha256
 265         ) &&
 266         (
 267                 cd sha1 &&
 268                 mv ../mpi-sha256 .git/objects/pack/multi-pack-index &&
 269                 git log -1 2>err &&
 270                 test_i18ngrep "multi-pack-index hash version 2 does not match version 1" err
 271         ) &&
 272         (
 273                 cd sha256 &&
 274                 mv ../mpi-sha1 .git/objects/pack/multi-pack-index &&
 275                 git log -1 2>err &&
 276                 test_i18ngrep "multi-pack-index hash version 1 does not match version 2" err
 277         )
 278 '
 279
 280 test_expect_success 'midx picks objects from preferred pack' '
 281         test_when_finished rm -rf preferred.git &&
 282         git init --bare preferred.git &&
 283         (
 284                 cd preferred.git &&
 285
 286                 a=$(echo "a" | git hash-object -w --stdin) &&
 287                 b=$(echo "b" | git hash-object -w --stdin) &&
 288                 c=$(echo "c" | git hash-object -w --stdin) &&
 289
 290                 # Set up two packs, duplicating the object "B" at different
 291                 # offsets.
 292                 #
 293                 # Note that the "BC" pack (the one we choose as preferred) sorts
 294                 # lexically after the "AB" pack, meaning that omitting the
 295                 # --preferred-pack argument would cause this test to fail (since
 296                 # the MIDX code would select the copy of "b" in the "AB" pack).
 297                 git pack-objects objects/pack/test-AB <<-EOF &&
 298                 $a
 299                 $b
 300                 EOF
 301                 bc=$(git pack-objects objects/pack/test-BC <<-EOF
 302                 $b
 303                 $c
 304                 EOF
 305                 ) &&
 306
 307                 git multi-pack-index --object-dir=objects \
 308                         write --preferred-pack=test-BC-$bc.idx 2>err &&
 309                 test_must_be_empty err &&
 310
 311                 test-tool read-midx --show-objects objects >out &&
 312
 313                 ofs=$(git show-index <objects/pack/test-BC-$bc.idx | grep $b |
 314                         cut -d" " -f1) &&
 315                 printf "%s %s\tobjects/pack/test-BC-%s.pack\n" \
 316                         "$b" "$ofs" "$bc" >expect &&
 317                 grep ^$b out >actual &&
 318
 319                 test_cmp expect actual
 320         )
 321 '
 322
 323 test_expect_success 'preferred packs must be non-empty' '
 324         test_when_finished rm -rf preferred.git &&
 325         git init preferred.git &&
 326         (
 327                 cd preferred.git &&
 328
 329                 test_commit base &&
 330                 git repack -ad &&
 331
 332                 empty="$(git pack-objects $objdir/pack/pack </dev/null)" &&
 333
 334                 test_must_fail git multi-pack-index write \
 335                         --preferred-pack=pack-$empty.pack 2>err &&
 336                 grep "with no objects" err
 337         )
 338 '
 339
 340 test_expect_success 'verify multi-pack-index success' '
 341         git multi-pack-index verify --object-dir=$objdir
 342 '
 343
 344 test_expect_success 'verify progress off for redirected stderr' '
 345         git multi-pack-index verify --object-dir=$objdir 2>err &&
 346         test_line_count = 0 err
 347 '
 348
 349 test_expect_success 'verify force progress on for stderr' '
 350         git multi-pack-index verify --object-dir=$objdir --progress 2>err &&
 351         test_file_not_empty err
 352 '
 353
 354 test_expect_success 'verify with the --no-progress option' '
 355         git multi-pack-index verify --object-dir=$objdir --no-progress 2>err &&
 356         test_line_count = 0 err
 357 '
 358
 359 # usage: corrupt_midx_and_verify <pos> <data> <objdir> <string>
 360 corrupt_midx_and_verify() {
 361         POS=$1 &&
 362         DATA="${2:-\0}" &&
 363         OBJDIR=$3 &&
 364         GREPSTR="$4" &&
 365         COMMAND="$5" &&
 366         if test -z "$COMMAND"
 367         then
 368                 COMMAND="git multi-pack-index verify --object-dir=$OBJDIR"
 369         fi &&
 370         FILE=$OBJDIR/pack/multi-pack-index &&
 371         chmod a+w $FILE &&
 372         test_when_finished mv midx-backup $FILE &&
 373         cp $FILE midx-backup &&
 374         printf "$DATA" | dd of="$FILE" bs=1 seek="$POS" conv=notrunc &&
 375         test_must_fail $COMMAND 2>test_err &&
 376         grep -v "^+" test_err >err &&
 377         test_i18ngrep "$GREPSTR" err
 378 }
 379
 380 test_expect_success 'verify bad signature' '
 381         corrupt_midx_and_verify 0 "\00" $objdir \
 382                 "multi-pack-index signature"
 383 '
 384
 385 NUM_OBJECTS=74
 386 MIDX_BYTE_VERSION=4
 387 MIDX_BYTE_OID_VERSION=5
 388 MIDX_BYTE_CHUNK_COUNT=6
 389 MIDX_HEADER_SIZE=12
 390 MIDX_BYTE_CHUNK_ID=$MIDX_HEADER_SIZE
 391 MIDX_BYTE_CHUNK_OFFSET=$(($MIDX_HEADER_SIZE + 4))
 392 MIDX_NUM_CHUNKS=5
 393 MIDX_CHUNK_LOOKUP_WIDTH=12
 394 MIDX_OFFSET_PACKNAMES=$(($MIDX_HEADER_SIZE + \
 395                          $MIDX_NUM_CHUNKS * $MIDX_CHUNK_LOOKUP_WIDTH))
 396 MIDX_BYTE_PACKNAME_ORDER=$(($MIDX_OFFSET_PACKNAMES + 2))
 397 MIDX_OFFSET_OID_FANOUT=$(($MIDX_OFFSET_PACKNAMES + $(test_oid packnameoff)))
 398 MIDX_OID_FANOUT_WIDTH=4
 399 MIDX_BYTE_OID_FANOUT_ORDER=$((MIDX_OFFSET_OID_FANOUT + 250 * $MIDX_OID_FANOUT_WIDTH + $(test_oid fanoutoff)))
 400 MIDX_OFFSET_OID_LOOKUP=$(($MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
 401 MIDX_BYTE_OID_LOOKUP=$(($MIDX_OFFSET_OID_LOOKUP + 16 * $HASH_LEN))
 402 MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
 403 MIDX_OFFSET_WIDTH=8
 404 MIDX_BYTE_PACK_INT_ID=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 2))
 405 MIDX_BYTE_OFFSET=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 6))
 406
 407 test_expect_success 'verify bad version' '
 408         corrupt_midx_and_verify $MIDX_BYTE_VERSION "\00" $objdir \
 409                 "multi-pack-index version"
 410 '
 411
 412 test_expect_success 'verify bad OID version' '
 413         corrupt_midx_and_verify $MIDX_BYTE_OID_VERSION "\03" $objdir \
 414                 "hash version"
 415 '
 416
 417 test_expect_success 'verify truncated chunk count' '
 418         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\01" $objdir \
 419                 "final chunk has non-zero id"
 420 '
 421
 422 test_expect_success 'verify extended chunk count' '
 423         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\07" $objdir \
 424                 "terminating chunk id appears earlier than expected"
 425 '
 426
 427 test_expect_success 'verify missing required chunk' '
 428         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_ID "\01" $objdir \
 429                 "missing required"
 430 '
 431
 432 test_expect_success 'verify invalid chunk offset' '
 433         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_OFFSET "\01" $objdir \
 434                 "improper chunk offset(s)"
 435 '
 436
 437 test_expect_success 'verify packnames out of order' '
 438         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "z" $objdir \
 439                 "pack names out of order"
 440 '
 441
 442 test_expect_success 'verify packnames out of order' '
 443         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "a" $objdir \
 444                 "failed to load pack"
 445 '
 446
 447 test_expect_success 'verify oid fanout out of order' '
 448         corrupt_midx_and_verify $MIDX_BYTE_OID_FANOUT_ORDER "\01" $objdir \
 449                 "oid fanout out of order"
 450 '
 451
 452 test_expect_success 'verify oid lookup out of order' '
 453         corrupt_midx_and_verify $MIDX_BYTE_OID_LOOKUP "\00" $objdir \
 454                 "oid lookup out of order"
 455 '
 456
 457 test_expect_success 'verify incorrect pack-int-id' '
 458         corrupt_midx_and_verify $MIDX_BYTE_PACK_INT_ID "\07" $objdir \
 459                 "bad pack-int-id"
 460 '
 461
 462 test_expect_success 'verify incorrect offset' '
 463         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\377" $objdir \
 464                 "incorrect object offset"
 465 '
 466
 467 test_expect_success 'git-fsck incorrect offset' '
 468         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\377" $objdir \
 469                 "incorrect object offset" \
 470                 "git -c core.multipackindex=true fsck"
 471 '
 472
 473 test_expect_success 'corrupt MIDX is not reused' '
 474         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\377" $objdir \
 475                 "incorrect object offset" &&
 476         git multi-pack-index write 2>err &&
 477         test_i18ngrep checksum.mismatch err &&
 478         git multi-pack-index verify
 479 '
 480
 481 test_expect_success 'verify incorrect checksum' '
 482         pos=$(($(wc -c <$objdir/pack/multi-pack-index) - 1)) &&
 483         corrupt_midx_and_verify $pos "\377" $objdir "incorrect checksum"
 484 '
 485
 486 test_expect_success 'repack progress off for redirected stderr' '
 487         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir repack 2>err &&
 488         test_line_count = 0 err
 489 '
 490
 491 test_expect_success 'repack force progress on for stderr' '
 492         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir repack --progress 2>err &&
 493         test_file_not_empty err
 494 '
 495
 496 test_expect_success 'repack with the --no-progress option' '
 497         GIT_PROGRESS_DELAY=0 git multi-pack-index --object-dir=$objdir repack --no-progress 2>err &&
 498         test_line_count = 0 err
 499 '
 500
 501 test_expect_success 'repack removes multi-pack-index when deleting packs' '
 502         test_path_is_file $objdir/pack/multi-pack-index &&
 503         # Set GIT_TEST_MULTI_PACK_INDEX to 0 to avoid writing a new
 504         # multi-pack-index after repacking, but set "core.multiPackIndex" to
 505         # true so that "git repack" can read the existing MIDX.
 506         GIT_TEST_MULTI_PACK_INDEX=0 git -c core.multiPackIndex repack -adf &&
 507         test_path_is_missing $objdir/pack/multi-pack-index
 508 '
 509
 510 test_expect_success 'repack preserves multi-pack-index when creating packs' '
 511         git init preserve &&
 512         test_when_finished "rm -fr preserve" &&
 513         (
 514                 cd preserve &&
 515                 packdir=.git/objects/pack &&
 516                 midx=$packdir/multi-pack-index &&
 517
 518                 test_commit 1 &&
 519                 pack1=$(git pack-objects --all $packdir/pack) &&
 520                 touch $packdir/pack-$pack1.keep &&
 521                 test_commit 2 &&
 522                 pack2=$(git pack-objects --revs $packdir/pack) &&
 523                 touch $packdir/pack-$pack2.keep &&
 524
 525                 git multi-pack-index write &&
 526                 cp $midx $midx.bak &&
 527
 528                 cat >pack-input <<-EOF &&
 529                 HEAD
 530                 ^HEAD~1
 531                 EOF
 532                 test_commit 3 &&
 533                 pack3=$(git pack-objects --revs $packdir/pack <pack-input) &&
 534                 test_commit 4 &&
 535                 pack4=$(git pack-objects --revs $packdir/pack <pack-input) &&
 536
 537                 GIT_TEST_MULTI_PACK_INDEX=0 git -c core.multiPackIndex repack -ad &&
 538                 ls -la $packdir &&
 539                 test_path_is_file $packdir/pack-$pack1.pack &&
 540                 test_path_is_file $packdir/pack-$pack2.pack &&
 541                 test_path_is_missing $packdir/pack-$pack3.pack &&
 542                 test_path_is_missing $packdir/pack-$pack4.pack &&
 543                 test_cmp_bin $midx.bak $midx
 544         )
 545 '
 546
 547 compare_results_with_midx "after repack"
 548
 549 test_expect_success 'multi-pack-index and pack-bitmap' '
 550         GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 \
 551                 git -c repack.writeBitmaps=true repack -ad &&
 552         git multi-pack-index write &&
 553         git rev-list --test-bitmap HEAD
 554 '
 555
 556 test_expect_success 'multi-pack-index and alternates' '
 557         git init --bare alt.git &&
 558         echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
 559         echo content1 >file1 &&
 560         altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
 561         git cat-file blob $altblob &&
 562         git rev-list --all
 563 '
 564
 565 compare_results_with_midx "with alternate (local midx)"
 566
 567 test_expect_success 'multi-pack-index in an alternate' '
 568         mv .git/objects/pack/* alt.git/objects/pack &&
 569         test_commit add_local_objects &&
 570         git repack --local &&
 571         git multi-pack-index write &&
 572         midx_read_expect 1 3 4 $objdir &&
 573         git reset --hard HEAD~1 &&
 574         rm -f .git/objects/pack/*
 575 '
 576
 577 compare_results_with_midx "with alternate (remote midx)"
 578
 579 # usage: corrupt_data <file> <pos> [<data>]
 580 corrupt_data () {
 581         file=$1
 582         pos=$2
 583         data="${3:-\0}"
 584         printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
 585 }
 586
 587 # Force 64-bit offsets by manipulating the idx file.
 588 # This makes the IDX file _incorrect_ so be careful to clean up after!
 589 test_expect_success 'force some 64-bit offsets with pack-objects' '
 590         mkdir objects64 &&
 591         mkdir objects64/pack &&
 592         for i in $(test_seq 1 11)
 593         do
 594                 generate_objects 11
 595         done &&
 596         commit_and_list_objects &&
 597         pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
 598         idx64=objects64/pack/test-64-$pack64.idx &&
 599         chmod u+w $idx64 &&
 600         corrupt_data $idx64 $(test_oid idxoff) "\02" &&
 601         # objects64 is not a real repository, but can serve as an alternate
 602         # anyway so we can write a MIDX into it
 603         git init repo &&
 604         test_when_finished "rm -fr repo" &&
 605         (
 606                 cd repo &&
 607                 ( cd ../objects64 && pwd ) >.git/objects/info/alternates &&
 608                 midx64=$(git multi-pack-index --object-dir=../objects64 write)
 609         ) &&
 610         midx_read_expect 1 63 5 objects64 " large-offsets"
 611 '
 612
 613 test_expect_success 'verify multi-pack-index with 64-bit offsets' '
 614         git multi-pack-index verify --object-dir=objects64
 615 '
 616
 617 NUM_OBJECTS=63
 618 MIDX_OFFSET_OID_FANOUT=$((MIDX_OFFSET_PACKNAMES + 54))
 619 MIDX_OFFSET_OID_LOOKUP=$((MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
 620 MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
 621 MIDX_OFFSET_LARGE_OFFSETS=$(($MIDX_OFFSET_OBJECT_OFFSETS + $NUM_OBJECTS * $MIDX_OFFSET_WIDTH))
 622 MIDX_BYTE_LARGE_OFFSET=$(($MIDX_OFFSET_LARGE_OFFSETS + 3))
 623
 624 test_expect_success 'verify incorrect 64-bit offset' '
 625         corrupt_midx_and_verify $MIDX_BYTE_LARGE_OFFSET "\07" objects64 \
 626                 "incorrect object offset"
 627 '
 628
 629 test_expect_success 'setup expire tests' '
 630         mkdir dup &&
 631         (
 632                 cd dup &&
 633                 git init &&
 634                 test-tool genrandom "data" 4096 >large_file.txt &&
 635                 git update-index --add large_file.txt &&
 636                 for i in $(test_seq 1 20)
 637                 do
 638                         test_commit $i
 639                 done &&
 640                 git branch A HEAD &&
 641                 git branch B HEAD~8 &&
 642                 git branch C HEAD~13 &&
 643                 git branch D HEAD~16 &&
 644                 git branch E HEAD~18 &&
 645                 git pack-objects --revs .git/objects/pack/pack-A <<-EOF &&
 646                 refs/heads/A
 647                 ^refs/heads/B
 648                 EOF
 649                 git pack-objects --revs .git/objects/pack/pack-B <<-EOF &&
 650                 refs/heads/B
 651                 ^refs/heads/C
 652                 EOF
 653                 git pack-objects --revs .git/objects/pack/pack-C <<-EOF &&
 654                 refs/heads/C
 655                 ^refs/heads/D
 656                 EOF
 657                 git pack-objects --revs .git/objects/pack/pack-D <<-EOF &&
 658                 refs/heads/D
 659                 ^refs/heads/E
 660                 EOF
 661                 git pack-objects --revs .git/objects/pack/pack-E <<-EOF &&
 662                 refs/heads/E
 663                 EOF
 664                 git multi-pack-index write &&
 665                 cp -r .git/objects/pack .git/objects/pack-backup
 666         )
 667 '
 668
 669 test_expect_success 'expire does not remove any packs' '
 670         (
 671                 cd dup &&
 672                 ls .git/objects/pack >expect &&
 673                 git multi-pack-index expire &&
 674                 ls .git/objects/pack >actual &&
 675                 test_cmp expect actual
 676         )
 677 '
 678
 679 test_expect_success 'expire progress off for redirected stderr' '
 680         (
 681                 cd dup &&
 682                 git multi-pack-index expire 2>err &&
 683                 test_line_count = 0 err
 684         )
 685 '
 686
 687 test_expect_success 'expire force progress on for stderr' '
 688         (
 689                 cd dup &&
 690                 GIT_PROGRESS_DELAY=0 git multi-pack-index expire --progress 2>err &&
 691                 test_file_not_empty err
 692         )
 693 '
 694
 695 test_expect_success 'expire with the --no-progress option' '
 696         (
 697                 cd dup &&
 698                 GIT_PROGRESS_DELAY=0 git multi-pack-index expire --no-progress 2>err &&
 699                 test_line_count = 0 err
 700         )
 701 '
 702
 703 test_expect_success 'expire removes unreferenced packs' '
 704         (
 705                 cd dup &&
 706                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 707                 refs/heads/A
 708                 ^refs/heads/C
 709                 EOF
 710                 git multi-pack-index write &&
 711                 ls .git/objects/pack | grep -v -e pack-[AB] >expect &&
 712                 git multi-pack-index expire &&
 713                 ls .git/objects/pack >actual &&
 714                 test_cmp expect actual &&
 715                 ls .git/objects/pack/ | grep idx >expect-idx &&
 716                 test-tool read-midx .git/objects | grep idx >actual-midx &&
 717                 test_cmp expect-idx actual-midx &&
 718                 git multi-pack-index verify &&
 719                 git fsck
 720         )
 721 '
 722
 723 test_expect_success 'repack with minimum size does not alter existing packs' '
 724         (
 725                 cd dup &&
 726                 rm -rf .git/objects/pack &&
 727                 mv .git/objects/pack-backup .git/objects/pack &&
 728                 test-tool chmtime =-5 .git/objects/pack/pack-D* &&
 729                 test-tool chmtime =-4 .git/objects/pack/pack-C* &&
 730                 test-tool chmtime =-3 .git/objects/pack/pack-B* &&
 731                 test-tool chmtime =-2 .git/objects/pack/pack-A* &&
 732                 ls .git/objects/pack >expect &&
 733                 MINSIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | head -n 1) &&
 734                 git multi-pack-index repack --batch-size=$MINSIZE &&
 735                 ls .git/objects/pack >actual &&
 736                 test_cmp expect actual
 737         )
 738 '
 739
 740 test_expect_success 'repack respects repack.packKeptObjects=false' '
 741         test_when_finished rm -f dup/.git/objects/pack/*keep &&
 742         (
 743                 cd dup &&
 744                 ls .git/objects/pack/*idx >idx-list &&
 745                 test_line_count = 5 idx-list &&
 746                 ls .git/objects/pack/*.pack | sed "s/\.pack/.keep/" >keep-list &&
 747                 test_line_count = 5 keep-list &&
 748                 for keep in $(cat keep-list)
 749                 do
 750                         touch $keep || return 1
 751                 done &&
 752                 git multi-pack-index repack --batch-size=0 &&
 753                 ls .git/objects/pack/*idx >idx-list &&
 754                 test_line_count = 5 idx-list &&
 755                 test-tool read-midx .git/objects | grep idx >midx-list &&
 756                 test_line_count = 5 midx-list &&
 757                 THIRD_SMALLEST_SIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | sed -n 3p) &&
 758                 BATCH_SIZE=$((THIRD_SMALLEST_SIZE + 1)) &&
 759                 git multi-pack-index repack --batch-size=$BATCH_SIZE &&
 760                 ls .git/objects/pack/*idx >idx-list &&
 761                 test_line_count = 5 idx-list &&
 762                 test-tool read-midx .git/objects | grep idx >midx-list &&
 763                 test_line_count = 5 midx-list
 764         )
 765 '
 766
 767 test_expect_success 'repack creates a new pack' '
 768         (
 769                 cd dup &&
 770                 ls .git/objects/pack/*idx >idx-list &&
 771                 test_line_count = 5 idx-list &&
 772                 THIRD_SMALLEST_SIZE=$(test-tool path-utils file-size .git/objects/pack/*pack | sort -n | head -n 3 | tail -n 1) &&
 773                 BATCH_SIZE=$(($THIRD_SMALLEST_SIZE + 1)) &&
 774                 git multi-pack-index repack --batch-size=$BATCH_SIZE &&
 775                 ls .git/objects/pack/*idx >idx-list &&
 776                 test_line_count = 6 idx-list &&
 777                 test-tool read-midx .git/objects | grep idx >midx-list &&
 778                 test_line_count = 6 midx-list
 779         )
 780 '
 781
 782 test_expect_success 'expire removes repacked packs' '
 783         (
 784                 cd dup &&
 785                 ls -al .git/objects/pack/*pack &&
 786                 ls -S .git/objects/pack/*pack | head -n 4 >expect &&
 787                 git multi-pack-index expire &&
 788                 ls -S .git/objects/pack/*pack >actual &&
 789                 test_cmp expect actual &&
 790                 test-tool read-midx .git/objects | grep idx >midx-list &&
 791                 test_line_count = 4 midx-list
 792         )
 793 '
 794
 795 test_expect_success 'expire works when adding new packs' '
 796         (
 797                 cd dup &&
 798                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 799                 refs/heads/A
 800                 ^refs/heads/B
 801                 EOF
 802                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 803                 refs/heads/B
 804                 ^refs/heads/C
 805                 EOF
 806                 git pack-objects --revs .git/objects/pack/pack-combined <<-EOF &&
 807                 refs/heads/C
 808                 ^refs/heads/D
 809                 EOF
 810                 git multi-pack-index write &&
 811                 git pack-objects --revs .git/objects/pack/a-pack <<-EOF &&
 812                 refs/heads/D
 813                 ^refs/heads/E
 814                 EOF
 815                 git multi-pack-index write &&
 816                 git pack-objects --revs .git/objects/pack/z-pack <<-EOF &&
 817                 refs/heads/E
 818                 EOF
 819                 git multi-pack-index expire &&
 820                 ls .git/objects/pack/ | grep idx >expect &&
 821                 test-tool read-midx .git/objects | grep idx >actual &&
 822                 test_cmp expect actual &&
 823                 git multi-pack-index verify
 824         )
 825 '
 826
 827 test_expect_success 'expire respects .keep files' '
 828         (
 829                 cd dup &&
 830                 git pack-objects --revs .git/objects/pack/pack-all <<-EOF &&
 831                 refs/heads/A
 832                 EOF
 833                 git multi-pack-index write &&
 834                 PACKA=$(ls .git/objects/pack/a-pack*\.pack | sed s/\.pack\$//) &&
 835                 touch $PACKA.keep &&
 836                 git multi-pack-index expire &&
 837                 test_path_is_file $PACKA.idx &&
 838                 test_path_is_file $PACKA.keep &&
 839                 test_path_is_file $PACKA.pack &&
 840                 test-tool read-midx .git/objects | grep idx >midx-list &&
 841                 test_line_count = 2 midx-list
 842         )
 843 '
 844
 845 test_expect_success 'repack --batch-size=0 repacks everything' '
 846         cp -r dup dup2 &&
 847         (
 848                 cd dup &&
 849                 rm .git/objects/pack/*.keep &&
 850                 ls .git/objects/pack/*idx >idx-list &&
 851                 test_line_count = 2 idx-list &&
 852                 git multi-pack-index repack --batch-size=0 &&
 853                 ls .git/objects/pack/*idx >idx-list &&
 854                 test_line_count = 3 idx-list &&
 855                 test-tool read-midx .git/objects | grep idx >midx-list &&
 856                 test_line_count = 3 midx-list &&
 857                 git multi-pack-index expire &&
 858                 ls -al .git/objects/pack/*idx >idx-list &&
 859                 test_line_count = 1 idx-list &&
 860                 git multi-pack-index repack --batch-size=0 &&
 861                 ls -al .git/objects/pack/*idx >new-idx-list &&
 862                 test_cmp idx-list new-idx-list
 863         )
 864 '
 865
 866 test_expect_success 'repack --batch-size=<large> repacks everything' '
 867         (
 868                 cd dup2 &&
 869                 rm .git/objects/pack/*.keep &&
 870                 ls .git/objects/pack/*idx >idx-list &&
 871                 test_line_count = 2 idx-list &&
 872                 git multi-pack-index repack --batch-size=2000000 &&
 873                 ls .git/objects/pack/*idx >idx-list &&
 874                 test_line_count = 3 idx-list &&
 875                 test-tool read-midx .git/objects | grep idx >midx-list &&
 876                 test_line_count = 3 midx-list &&
 877                 git multi-pack-index expire &&
 878                 ls -al .git/objects/pack/*idx >idx-list &&
 879                 test_line_count = 1 idx-list
 880         )
 881 '
 882
 883 test_expect_success 'load reverse index when missing .idx, .pack' '
 884         git init repo &&
 885         test_when_finished "rm -fr repo" &&
 886         (
 887                 cd repo &&
 888
 889                 git config core.multiPackIndex true &&
 890
 891                 test_commit base &&
 892                 git repack -ad &&
 893                 git multi-pack-index write &&
 894
 895                 git rev-parse HEAD >tip &&
 896                 pack=$(ls .git/objects/pack/pack-*.pack) &&
 897                 idx=$(ls .git/objects/pack/pack-*.idx) &&
 898
 899                 mv $idx $idx.bak &&
 900                 git cat-file --batch-check="%(objectsize:disk)" <tip &&
 901
 902                 mv $idx.bak $idx &&
 903
 904                 mv $pack $pack.bak &&
 905                 git cat-file --batch-check="%(objectsize:disk)" <tip
 906         )
 907 '
 908
 909 test_expect_success 'usage shown without sub-command' '
 910         test_expect_code 129 git multi-pack-index 2>err &&
 911         ! test_i18ngrep "unrecognized subcommand" err
 912 '
 913
 914 test_expect_success 'complains when run outside of a repository' '
 915         nongit test_must_fail git multi-pack-index write 2>err &&
 916         grep "not a git repository" err
 917 '
 918
 919 test_done