t/t1450-fsck.sh

   1 #!/bin/sh
   2
   3 test_description='git fsck random collection of tests
   4
   5 * (HEAD) B
   6 * (master) A
   7 '
   8
   9 . ./test-lib.sh
  10
  11 test_expect_success setup '
  12         test_oid_init &&
  13         git config gc.auto 0 &&
  14         git config i18n.commitencoding ISO-8859-1 &&
  15         test_commit A fileA one &&
  16         git config --unset i18n.commitencoding &&
  17         git checkout HEAD^0 &&
  18         test_commit B fileB two &&
  19         git tag -d A B &&
  20         git reflog expire --expire=now --all
  21 '
  22
  23 test_expect_success 'loose objects borrowed from alternate are not missing' '
  24         mkdir another &&
  25         (
  26                 cd another &&
  27                 git init &&
  28                 echo ../../../.git/objects >.git/objects/info/alternates &&
  29                 test_commit C fileC one &&
  30                 git fsck --no-dangling >../actual 2>&1
  31         ) &&
  32         test_must_be_empty actual
  33 '
  34
  35 test_expect_success 'HEAD is part of refs, valid objects appear valid' '
  36         git fsck >actual 2>&1 &&
  37         test_must_be_empty actual
  38 '
  39
  40 # Corruption tests follow.  Make sure to remove all traces of the
  41 # specific corruption you test afterwards, lest a later test trip over
  42 # it.
  43
  44 test_expect_success 'setup: helpers for corruption tests' '
  45         sha1_file() {
  46                 remainder=${1#??} &&
  47                 firsttwo=${1%$remainder} &&
  48                 echo ".git/objects/$firsttwo/$remainder"
  49         } &&
  50
  51         remove_object() {
  52                 rm "$(sha1_file "$1")"
  53         }
  54 '
  55
  56 test_expect_success 'object with bad sha1' '
  57         sha=$(echo blob | git hash-object -w --stdin) &&
  58         old=$(test_oid_to_path "$sha") &&
  59         new=$(dirname $old)/$(test_oid ff_2) &&
  60         sha="$(dirname $new)$(basename $new)" &&
  61         mv .git/objects/$old .git/objects/$new &&
  62         test_when_finished "remove_object $sha" &&
  63         git update-index --add --cacheinfo 100644 $sha foo &&
  64         test_when_finished "git read-tree -u --reset HEAD" &&
  65         tree=$(git write-tree) &&
  66         test_when_finished "remove_object $tree" &&
  67         cmt=$(echo bogus | git commit-tree $tree) &&
  68         test_when_finished "remove_object $cmt" &&
  69         git update-ref refs/heads/bogus $cmt &&
  70         test_when_finished "git update-ref -d refs/heads/bogus" &&
  71
  72         test_must_fail git fsck 2>out &&
  73         test_i18ngrep "$sha.*corrupt" out
  74 '
  75
  76 test_expect_success 'branch pointing to non-commit' '
  77         git rev-parse HEAD^{tree} >.git/refs/heads/invalid &&
  78         test_when_finished "git update-ref -d refs/heads/invalid" &&
  79         test_must_fail git fsck 2>out &&
  80         test_i18ngrep "not a commit" out
  81 '
  82
  83 test_expect_success 'HEAD link pointing at a funny object' '
  84         test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
  85         mv .git/HEAD .git/SAVED_HEAD &&
  86         echo $ZERO_OID >.git/HEAD &&
  87         # avoid corrupt/broken HEAD from interfering with repo discovery
  88         test_must_fail env GIT_DIR=.git git fsck 2>out &&
  89         test_i18ngrep "detached HEAD points" out
  90 '
  91
  92 test_expect_success 'HEAD link pointing at a funny place' '
  93         test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
  94         mv .git/HEAD .git/SAVED_HEAD &&
  95         echo "ref: refs/funny/place" >.git/HEAD &&
  96         # avoid corrupt/broken HEAD from interfering with repo discovery
  97         test_must_fail env GIT_DIR=.git git fsck 2>out &&
  98         test_i18ngrep "HEAD points to something strange" out
  99 '
 100
 101 test_expect_success 'HEAD link pointing at a funny object (from different wt)' '
 102         test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
 103         test_when_finished "rm -rf .git/worktrees wt" &&
 104         git worktree add wt &&
 105         mv .git/HEAD .git/SAVED_HEAD &&
 106         echo $ZERO_OID >.git/HEAD &&
 107         # avoid corrupt/broken HEAD from interfering with repo discovery
 108         test_must_fail git -C wt fsck 2>out &&
 109         test_i18ngrep "main-worktree/HEAD: detached HEAD points" out
 110 '
 111
 112 test_expect_success 'other worktree HEAD link pointing at a funny object' '
 113         test_when_finished "rm -rf .git/worktrees other" &&
 114         git worktree add other &&
 115         echo $ZERO_OID >.git/worktrees/other/HEAD &&
 116         test_must_fail git fsck 2>out &&
 117         test_i18ngrep "worktrees/other/HEAD: detached HEAD points" out
 118 '
 119
 120 test_expect_success 'other worktree HEAD link pointing at missing object' '
 121         test_when_finished "rm -rf .git/worktrees other" &&
 122         git worktree add other &&
 123         echo "Contents missing from repo" | git hash-object --stdin >.git/worktrees/other/HEAD &&
 124         test_must_fail git fsck 2>out &&
 125         test_i18ngrep "worktrees/other/HEAD: invalid sha1 pointer" out
 126 '
 127
 128 test_expect_success 'other worktree HEAD link pointing at a funny place' '
 129         test_when_finished "rm -rf .git/worktrees other" &&
 130         git worktree add other &&
 131         echo "ref: refs/funny/place" >.git/worktrees/other/HEAD &&
 132         test_must_fail git fsck 2>out &&
 133         test_i18ngrep "worktrees/other/HEAD points to something strange" out
 134 '
 135
 136 test_expect_success 'commit with multiple signatures is okay' '
 137         git cat-file commit HEAD >basis &&
 138         cat >sigs <<-EOF &&
 139         gpgsig -----BEGIN PGP SIGNATURE-----
 140           VGhpcyBpcyBub3QgcmVhbGx5IGEgc2lnbmF0dXJlLg==
 141           -----END PGP SIGNATURE-----
 142         gpgsig-sha256 -----BEGIN PGP SIGNATURE-----
 143           VGhpcyBpcyBub3QgcmVhbGx5IGEgc2lnbmF0dXJlLg==
 144           -----END PGP SIGNATURE-----
 145         EOF
 146         sed -e "/^committer/q" basis >okay &&
 147         cat sigs >>okay &&
 148         echo >>okay &&
 149         sed -e "1,/^$/d" basis >>okay &&
 150         cat okay &&
 151         new=$(git hash-object -t commit -w --stdin <okay) &&
 152         test_when_finished "remove_object $new" &&
 153         git update-ref refs/heads/bogus "$new" &&
 154         test_when_finished "git update-ref -d refs/heads/bogus" &&
 155         git fsck 2>out &&
 156         cat out &&
 157         ! grep "commit $new" out
 158 '
 159
 160 test_expect_success 'email without @ is okay' '
 161         git cat-file commit HEAD >basis &&
 162         sed "s/@/AT/" basis >okay &&
 163         new=$(git hash-object -t commit -w --stdin <okay) &&
 164         test_when_finished "remove_object $new" &&
 165         git update-ref refs/heads/bogus "$new" &&
 166         test_when_finished "git update-ref -d refs/heads/bogus" &&
 167         git fsck 2>out &&
 168         ! grep "commit $new" out
 169 '
 170
 171 test_expect_success 'email with embedded > is not okay' '
 172         git cat-file commit HEAD >basis &&
 173         sed "s/@[a-z]/&>/" basis >bad-email &&
 174         new=$(git hash-object -t commit -w --stdin <bad-email) &&
 175         test_when_finished "remove_object $new" &&
 176         git update-ref refs/heads/bogus "$new" &&
 177         test_when_finished "git update-ref -d refs/heads/bogus" &&
 178         test_must_fail git fsck 2>out &&
 179         test_i18ngrep "error in commit $new" out
 180 '
 181
 182 test_expect_success 'missing < email delimiter is reported nicely' '
 183         git cat-file commit HEAD >basis &&
 184         sed "s/<//" basis >bad-email-2 &&
 185         new=$(git hash-object -t commit -w --stdin <bad-email-2) &&
 186         test_when_finished "remove_object $new" &&
 187         git update-ref refs/heads/bogus "$new" &&
 188         test_when_finished "git update-ref -d refs/heads/bogus" &&
 189         test_must_fail git fsck 2>out &&
 190         test_i18ngrep "error in commit $new.* - bad name" out
 191 '
 192
 193 test_expect_success 'missing email is reported nicely' '
 194         git cat-file commit HEAD >basis &&
 195         sed "s/[a-z]* <[^>]*>//" basis >bad-email-3 &&
 196         new=$(git hash-object -t commit -w --stdin <bad-email-3) &&
 197         test_when_finished "remove_object $new" &&
 198         git update-ref refs/heads/bogus "$new" &&
 199         test_when_finished "git update-ref -d refs/heads/bogus" &&
 200         test_must_fail git fsck 2>out &&
 201         test_i18ngrep "error in commit $new.* - missing email" out
 202 '
 203
 204 test_expect_success '> in name is reported' '
 205         git cat-file commit HEAD >basis &&
 206         sed "s/ </> </" basis >bad-email-4 &&
 207         new=$(git hash-object -t commit -w --stdin <bad-email-4) &&
 208         test_when_finished "remove_object $new" &&
 209         git update-ref refs/heads/bogus "$new" &&
 210         test_when_finished "git update-ref -d refs/heads/bogus" &&
 211         test_must_fail git fsck 2>out &&
 212         test_i18ngrep "error in commit $new" out
 213 '
 214
 215 # date is 2^64 + 1
 216 test_expect_success 'integer overflow in timestamps is reported' '
 217         git cat-file commit HEAD >basis &&
 218         sed "s/^\\(author .*>\\) [0-9]*/\\1 18446744073709551617/" \
 219                 <basis >bad-timestamp &&
 220         new=$(git hash-object -t commit -w --stdin <bad-timestamp) &&
 221         test_when_finished "remove_object $new" &&
 222         git update-ref refs/heads/bogus "$new" &&
 223         test_when_finished "git update-ref -d refs/heads/bogus" &&
 224         test_must_fail git fsck 2>out &&
 225         test_i18ngrep "error in commit $new.*integer overflow" out
 226 '
 227
 228 test_expect_success 'commit with NUL in header' '
 229         git cat-file commit HEAD >basis &&
 230         sed "s/author ./author Q/" <basis | q_to_nul >commit-NUL-header &&
 231         new=$(git hash-object -t commit -w --stdin <commit-NUL-header) &&
 232         test_when_finished "remove_object $new" &&
 233         git update-ref refs/heads/bogus "$new" &&
 234         test_when_finished "git update-ref -d refs/heads/bogus" &&
 235         test_must_fail git fsck 2>out &&
 236         test_i18ngrep "error in commit $new.*unterminated header: NUL at offset" out
 237 '
 238
 239 test_expect_success 'tree object with duplicate entries' '
 240         test_when_finished "for i in \$T; do remove_object \$i; done" &&
 241         T=$(
 242                 GIT_INDEX_FILE=test-index &&
 243                 export GIT_INDEX_FILE &&
 244                 rm -f test-index &&
 245                 >x &&
 246                 git add x &&
 247                 git rev-parse :x &&
 248                 T=$(git write-tree) &&
 249                 echo $T &&
 250                 (
 251                         git cat-file tree $T &&
 252                         git cat-file tree $T
 253                 ) |
 254                 git hash-object -w -t tree --stdin
 255         ) &&
 256         test_must_fail git fsck 2>out &&
 257         test_i18ngrep "error in tree .*contains duplicate file entries" out
 258 '
 259
 260 test_expect_success 'tree object with dublicate names' '
 261         test_when_finished "remove_object \$blob" &&
 262         test_when_finished "remove_object \$tree" &&
 263         test_when_finished "remove_object \$badtree" &&
 264         blob=$(echo blob | git hash-object -w --stdin) &&
 265         printf "100644 blob %s\t%s\n" $blob x.2 >tree &&
 266         tree=$(git mktree <tree) &&
 267         printf "100644 blob %s\t%s\n" $blob x.1 >badtree &&
 268         printf "100644 blob %s\t%s\n" $blob x >>badtree &&
 269         printf "040000 tree %s\t%s\n" $tree x >>badtree &&
 270         badtree=$(git mktree <badtree) &&
 271         test_must_fail git fsck 2>out &&
 272         test_i18ngrep "$badtree" out &&
 273         test_i18ngrep "error in tree .*contains duplicate file entries" out
 274 '
 275
 276 test_expect_success 'unparseable tree object' '
 277         test_oid_cache <<-\EOF &&
 278         junk sha1:twenty-bytes-of-junk
 279         junk sha256:twenty-bytes-of-junk-twelve-more
 280         EOF
 281
 282         test_when_finished "git update-ref -d refs/heads/wrong" &&
 283         test_when_finished "remove_object \$tree_sha1" &&
 284         test_when_finished "remove_object \$commit_sha1" &&
 285         junk=$(test_oid junk) &&
 286         tree_sha1=$(printf "100644 \0$junk" | git hash-object -t tree --stdin -w --literally) &&
 287         commit_sha1=$(git commit-tree $tree_sha1) &&
 288         git update-ref refs/heads/wrong $commit_sha1 &&
 289         test_must_fail git fsck 2>out &&
 290         test_i18ngrep "error: empty filename in tree entry" out &&
 291         test_i18ngrep "$tree_sha1" out &&
 292         test_i18ngrep ! "fatal: empty filename in tree entry" out
 293 '
 294
 295 test_expect_success 'tree entry with type mismatch' '
 296         test_when_finished "remove_object \$blob" &&
 297         test_when_finished "remove_object \$tree" &&
 298         test_when_finished "remove_object \$commit" &&
 299         test_when_finished "git update-ref -d refs/heads/type_mismatch" &&
 300         blob=$(echo blob | git hash-object -w --stdin) &&
 301         blob_bin=$(echo $blob | hex2oct) &&
 302         tree=$(
 303                 printf "40000 dir\0${blob_bin}100644 file\0${blob_bin}" |
 304                 git hash-object -t tree --stdin -w --literally
 305         ) &&
 306         commit=$(git commit-tree $tree) &&
 307         git update-ref refs/heads/type_mismatch $commit &&
 308         test_must_fail git fsck >out 2>&1 &&
 309         test_i18ngrep "is a blob, not a tree" out &&
 310         test_i18ngrep ! "dangling blob" out
 311 '
 312
 313 test_expect_success 'tag pointing to nonexistent' '
 314         badoid=$(test_oid deadbeef) &&
 315         cat >invalid-tag <<-EOF &&
 316         object $badoid
 317         type commit
 318         tag invalid
 319         tagger T A Gger <tagger@example.com> 1234567890 -0000
 320
 321         This is an invalid tag.
 322         EOF
 323
 324         tag=$(git hash-object -t tag -w --stdin <invalid-tag) &&
 325         test_when_finished "remove_object $tag" &&
 326         echo $tag >.git/refs/tags/invalid &&
 327         test_when_finished "git update-ref -d refs/tags/invalid" &&
 328         test_must_fail git fsck --tags >out &&
 329         test_i18ngrep "broken link" out
 330 '
 331
 332 test_expect_success 'tag pointing to something else than its type' '
 333         sha=$(echo blob | git hash-object -w --stdin) &&
 334         test_when_finished "remove_object $sha" &&
 335         cat >wrong-tag <<-EOF &&
 336         object $sha
 337         type commit
 338         tag wrong
 339         tagger T A Gger <tagger@example.com> 1234567890 -0000
 340
 341         This is an invalid tag.
 342         EOF
 343
 344         tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
 345         test_when_finished "remove_object $tag" &&
 346         echo $tag >.git/refs/tags/wrong &&
 347         test_when_finished "git update-ref -d refs/tags/wrong" &&
 348         test_must_fail git fsck --tags
 349 '
 350
 351 test_expect_success 'tag with incorrect tag name & missing tagger' '
 352         sha=$(git rev-parse HEAD) &&
 353         cat >wrong-tag <<-EOF &&
 354         object $sha
 355         type commit
 356         tag wrong name format
 357
 358         This is an invalid tag.
 359         EOF
 360
 361         tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
 362         test_when_finished "remove_object $tag" &&
 363         echo $tag >.git/refs/tags/wrong &&
 364         test_when_finished "git update-ref -d refs/tags/wrong" &&
 365         git fsck --tags 2>out &&
 366
 367         cat >expect <<-EOF &&
 368         warning in tag $tag: badTagName: invalid '\''tag'\'' name: wrong name format
 369         warning in tag $tag: missingTaggerEntry: invalid format - expected '\''tagger'\'' line
 370         EOF
 371         test_i18ncmp expect out
 372 '
 373
 374 test_expect_success 'tag with bad tagger' '
 375         sha=$(git rev-parse HEAD) &&
 376         cat >wrong-tag <<-EOF &&
 377         object $sha
 378         type commit
 379         tag not-quite-wrong
 380         tagger Bad Tagger Name
 381
 382         This is an invalid tag.
 383         EOF
 384
 385         tag=$(git hash-object --literally -t tag -w --stdin <wrong-tag) &&
 386         test_when_finished "remove_object $tag" &&
 387         echo $tag >.git/refs/tags/wrong &&
 388         test_when_finished "git update-ref -d refs/tags/wrong" &&
 389         test_must_fail git fsck --tags 2>out &&
 390         test_i18ngrep "error in tag .*: invalid author/committer" out
 391 '
 392
 393 test_expect_success 'tag with NUL in header' '
 394         sha=$(git rev-parse HEAD) &&
 395         q_to_nul >tag-NUL-header <<-EOF &&
 396         object $sha
 397         type commit
 398         tag contains-Q-in-header
 399         tagger T A Gger <tagger@example.com> 1234567890 -0000
 400
 401         This is an invalid tag.
 402         EOF
 403
 404         tag=$(git hash-object --literally -t tag -w --stdin <tag-NUL-header) &&
 405         test_when_finished "remove_object $tag" &&
 406         echo $tag >.git/refs/tags/wrong &&
 407         test_when_finished "git update-ref -d refs/tags/wrong" &&
 408         test_must_fail git fsck --tags 2>out &&
 409         test_i18ngrep "error in tag $tag.*unterminated header: NUL at offset" out
 410 '
 411
 412 test_expect_success 'cleaned up' '
 413         git fsck >actual 2>&1 &&
 414         test_must_be_empty actual
 415 '
 416
 417 test_expect_success 'rev-list --verify-objects' '
 418         git rev-list --verify-objects --all >/dev/null 2>out &&
 419         test_must_be_empty out
 420 '
 421
 422 test_expect_success 'rev-list --verify-objects with bad sha1' '
 423         sha=$(echo blob | git hash-object -w --stdin) &&
 424         old=$(test_oid_to_path $sha) &&
 425         new=$(dirname $old)/$(test_oid ff_2) &&
 426         sha="$(dirname $new)$(basename $new)" &&
 427         mv .git/objects/$old .git/objects/$new &&
 428         test_when_finished "remove_object $sha" &&
 429         git update-index --add --cacheinfo 100644 $sha foo &&
 430         test_when_finished "git read-tree -u --reset HEAD" &&
 431         tree=$(git write-tree) &&
 432         test_when_finished "remove_object $tree" &&
 433         cmt=$(echo bogus | git commit-tree $tree) &&
 434         test_when_finished "remove_object $cmt" &&
 435         git update-ref refs/heads/bogus $cmt &&
 436         test_when_finished "git update-ref -d refs/heads/bogus" &&
 437
 438         test_might_fail git rev-list --verify-objects refs/heads/bogus >/dev/null 2>out &&
 439         test_i18ngrep -q "error: hash mismatch $(dirname $new)$(test_oid ff_2)" out
 440 '
 441
 442 test_expect_success 'force fsck to ignore double author' '
 443         git cat-file commit HEAD >basis &&
 444         sed "s/^author .*/&,&/" <basis | tr , \\n >multiple-authors &&
 445         new=$(git hash-object -t commit -w --stdin <multiple-authors) &&
 446         test_when_finished "remove_object $new" &&
 447         git update-ref refs/heads/bogus "$new" &&
 448         test_when_finished "git update-ref -d refs/heads/bogus" &&
 449         test_must_fail git fsck &&
 450         git -c fsck.multipleAuthors=ignore fsck
 451 '
 452
 453 _bz='\0'
 454 _bzoid=$(printf $ZERO_OID | sed -e 's/00/\\0/g')
 455
 456 test_expect_success 'fsck notices blob entry pointing to null sha1' '
 457         (git init null-blob &&
 458          cd null-blob &&
 459          sha=$(printf "100644 file$_bz$_bzoid" |
 460                git hash-object -w --stdin -t tree) &&
 461           git fsck 2>out &&
 462           test_i18ngrep "warning.*null sha1" out
 463         )
 464 '
 465
 466 test_expect_success 'fsck notices submodule entry pointing to null sha1' '
 467         (git init null-commit &&
 468          cd null-commit &&
 469          sha=$(printf "160000 submodule$_bz$_bzoid" |
 470                git hash-object -w --stdin -t tree) &&
 471           git fsck 2>out &&
 472           test_i18ngrep "warning.*null sha1" out
 473         )
 474 '
 475
 476 while read name path pretty; do
 477         while read mode type; do
 478                 : ${pretty:=$path}
 479                 test_expect_success "fsck notices $pretty as $type" '
 480                 (
 481                         git init $name-$type &&
 482                         cd $name-$type &&
 483                         git config core.protectNTFS false &&
 484                         echo content >file &&
 485                         git add file &&
 486                         git commit -m base &&
 487                         blob=$(git rev-parse :file) &&
 488                         tree=$(git rev-parse HEAD^{tree}) &&
 489                         value=$(eval "echo \$$type") &&
 490                         printf "$mode $type %s\t%s" "$value" "$path" >bad &&
 491                         bad_tree=$(git mktree <bad) &&
 492                         git fsck 2>out &&
 493                         test_i18ngrep "warning.*tree $bad_tree" out
 494                 )'
 495         done <<-\EOF
 496         100644 blob
 497         040000 tree
 498         EOF
 499 done <<-EOF
 500 dot .
 501 dotdot ..
 502 dotgit .git
 503 dotgit-case .GIT
 504 dotgit-unicode .gI${u200c}T .gI{u200c}T
 505 dotgit-case2 .Git
 506 git-tilde1 git~1
 507 dotgitdot .git.
 508 dot-backslash-case .\\\\.GIT\\\\foobar
 509 dotgit-case-backslash .git\\\\foobar
 510 EOF
 511
 512 test_expect_success 'fsck allows .Ňit' '
 513         (
 514                 git init not-dotgit &&
 515                 cd not-dotgit &&
 516                 echo content >file &&
 517                 git add file &&
 518                 git commit -m base &&
 519                 blob=$(git rev-parse :file) &&
 520                 printf "100644 blob $blob\t.\\305\\207it" >tree &&
 521                 tree=$(git mktree <tree) &&
 522                 git fsck 2>err &&
 523                 test_line_count = 0 err
 524         )
 525 '
 526
 527 test_expect_success 'NUL in commit' '
 528         rm -fr nul-in-commit &&
 529         git init nul-in-commit &&
 530         (
 531                 cd nul-in-commit &&
 532                 git commit --allow-empty -m "initial commitQNUL after message" &&
 533                 git cat-file commit HEAD >original &&
 534                 q_to_nul <original >munged &&
 535                 git hash-object -w -t commit --stdin <munged >name &&
 536                 git branch bad $(cat name) &&
 537
 538                 test_must_fail git -c fsck.nulInCommit=error fsck 2>warn.1 &&
 539                 test_i18ngrep nulInCommit warn.1 &&
 540                 git fsck 2>warn.2 &&
 541                 test_i18ngrep nulInCommit warn.2
 542         )
 543 '
 544
 545 # create a static test repo which is broken by omitting
 546 # one particular object ($1, which is looked up via rev-parse
 547 # in the new repository).
 548 create_repo_missing () {
 549         rm -rf missing &&
 550         git init missing &&
 551         (
 552                 cd missing &&
 553                 git commit -m one --allow-empty &&
 554                 mkdir subdir &&
 555                 echo content >subdir/file &&
 556                 git add subdir/file &&
 557                 git commit -m two &&
 558                 unrelated=$(echo unrelated | git hash-object --stdin -w) &&
 559                 git tag -m foo tag $unrelated &&
 560                 sha1=$(git rev-parse --verify "$1") &&
 561                 path=$(echo $sha1 | sed 's|..|&/|') &&
 562                 rm .git/objects/$path
 563         )
 564 }
 565
 566 test_expect_success 'fsck notices missing blob' '
 567         create_repo_missing HEAD:subdir/file &&
 568         test_must_fail git -C missing fsck
 569 '
 570
 571 test_expect_success 'fsck notices missing subtree' '
 572         create_repo_missing HEAD:subdir &&
 573         test_must_fail git -C missing fsck
 574 '
 575
 576 test_expect_success 'fsck notices missing root tree' '
 577         create_repo_missing HEAD^{tree} &&
 578         test_must_fail git -C missing fsck
 579 '
 580
 581 test_expect_success 'fsck notices missing parent' '
 582         create_repo_missing HEAD^ &&
 583         test_must_fail git -C missing fsck
 584 '
 585
 586 test_expect_success 'fsck notices missing tagged object' '
 587         create_repo_missing tag^{blob} &&
 588         test_must_fail git -C missing fsck
 589 '
 590
 591 test_expect_success 'fsck notices ref pointing to missing commit' '
 592         create_repo_missing HEAD &&
 593         test_must_fail git -C missing fsck
 594 '
 595
 596 test_expect_success 'fsck notices ref pointing to missing tag' '
 597         create_repo_missing tag &&
 598         test_must_fail git -C missing fsck
 599 '
 600
 601 test_expect_success 'fsck --connectivity-only' '
 602         rm -rf connectivity-only &&
 603         git init connectivity-only &&
 604         (
 605                 cd connectivity-only &&
 606                 touch empty &&
 607                 git add empty &&
 608                 test_commit empty &&
 609
 610                 # Drop the index now; we want to be sure that we
 611                 # recursively notice the broken objects
 612                 # because they are reachable from refs, not because
 613                 # they are in the index.
 614                 rm -f .git/index &&
 615
 616                 # corrupt the blob, but in a way that we can still identify
 617                 # its type. That lets us see that --connectivity-only is
 618                 # not actually looking at the contents, but leaves it
 619                 # free to examine the type if it chooses.
 620                 empty=.git/objects/$(test_oid_to_path $EMPTY_BLOB) &&
 621                 blob=$(echo unrelated | git hash-object -w --stdin) &&
 622                 mv -f $(sha1_file $blob) $empty &&
 623
 624                 test_must_fail git fsck --strict &&
 625                 git fsck --strict --connectivity-only &&
 626                 tree=$(git rev-parse HEAD:) &&
 627                 suffix=${tree#??} &&
 628                 tree=.git/objects/${tree%$suffix}/$suffix &&
 629                 rm -f $tree &&
 630                 echo invalid >$tree &&
 631                 test_must_fail git fsck --strict --connectivity-only
 632         )
 633 '
 634
 635 test_expect_success 'fsck --connectivity-only with explicit head' '
 636         rm -rf connectivity-only &&
 637         git init connectivity-only &&
 638         (
 639                 cd connectivity-only &&
 640                 test_commit foo &&
 641                 rm -f .git/index &&
 642                 tree=$(git rev-parse HEAD^{tree}) &&
 643                 remove_object $(git rev-parse HEAD:foo.t) &&
 644                 test_must_fail git fsck --connectivity-only $tree
 645         )
 646 '
 647
 648 test_expect_success 'fsck --name-objects' '
 649         rm -rf name-objects &&
 650         git init name-objects &&
 651         (
 652                 cd name-objects &&
 653                 test_commit julius caesar.t &&
 654                 test_commit augustus &&
 655                 test_commit caesar &&
 656                 remove_object $(git rev-parse julius:caesar.t) &&
 657                 test_must_fail git fsck --name-objects >out &&
 658                 tree=$(git rev-parse --verify julius:) &&
 659                 test_i18ngrep "$tree (refs/tags/julius:" out
 660         )
 661 '
 662
 663 test_expect_success 'alternate objects are correctly blamed' '
 664         test_when_finished "rm -rf alt.git .git/objects/info/alternates" &&
 665         name=$(test_oid numeric) &&
 666         path=$(test_oid_to_path "$name") &&
 667         git init --bare alt.git &&
 668         echo "../../alt.git/objects" >.git/objects/info/alternates &&
 669         mkdir alt.git/objects/$(dirname $path) &&
 670         >alt.git/objects/$(dirname $path)/$(basename $path) &&
 671         test_must_fail git fsck >out 2>&1 &&
 672         test_i18ngrep alt.git out
 673 '
 674
 675 test_expect_success 'fsck errors in packed objects' '
 676         git cat-file commit HEAD >basis &&
 677         sed "s/</one/" basis >one &&
 678         sed "s/</foo/" basis >two &&
 679         one=$(git hash-object -t commit -w one) &&
 680         two=$(git hash-object -t commit -w two) &&
 681         pack=$(
 682                 {
 683                         echo $one &&
 684                         echo $two
 685                 } | git pack-objects .git/objects/pack/pack
 686         ) &&
 687         test_when_finished "rm -f .git/objects/pack/pack-$pack.*" &&
 688         remove_object $one &&
 689         remove_object $two &&
 690         test_must_fail git fsck 2>out &&
 691         test_i18ngrep "error in commit $one.* - bad name" out &&
 692         test_i18ngrep "error in commit $two.* - bad name" out &&
 693         ! grep corrupt out
 694 '
 695
 696 test_expect_success 'fsck fails on corrupt packfile' '
 697         hsh=$(git commit-tree -m mycommit HEAD^{tree}) &&
 698         pack=$(echo $hsh | git pack-objects .git/objects/pack/pack) &&
 699
 700         # Corrupt the first byte of the first object. (It contains 3 type bits,
 701         # at least one of which is not zero, so setting the first byte to 0 is
 702         # sufficient.)
 703         chmod a+w .git/objects/pack/pack-$pack.pack &&
 704         printf '\0' | dd of=.git/objects/pack/pack-$pack.pack bs=1 conv=notrunc seek=12 &&
 705
 706         test_when_finished "rm -f .git/objects/pack/pack-$pack.*" &&
 707         remove_object $hsh &&
 708         test_must_fail git fsck 2>out &&
 709         test_i18ngrep "checksum mismatch" out
 710 '
 711
 712 test_expect_success 'fsck finds problems in duplicate loose objects' '
 713         rm -rf broken-duplicate &&
 714         git init broken-duplicate &&
 715         (
 716                 cd broken-duplicate &&
 717                 test_commit duplicate &&
 718                 # no "-d" here, so we end up with duplicates
 719                 git repack &&
 720                 # now corrupt the loose copy
 721                 file=$(sha1_file "$(git rev-parse HEAD)") &&
 722                 rm "$file" &&
 723                 echo broken >"$file" &&
 724                 test_must_fail git fsck
 725         )
 726 '
 727
 728 test_expect_success 'fsck detects trailing loose garbage (commit)' '
 729         git cat-file commit HEAD >basis &&
 730         echo bump-commit-sha1 >>basis &&
 731         commit=$(git hash-object -w -t commit basis) &&
 732         file=$(sha1_file $commit) &&
 733         test_when_finished "remove_object $commit" &&
 734         chmod +w "$file" &&
 735         echo garbage >>"$file" &&
 736         test_must_fail git fsck 2>out &&
 737         test_i18ngrep "garbage.*$commit" out
 738 '
 739
 740 test_expect_success 'fsck detects trailing loose garbage (large blob)' '
 741         blob=$(echo trailing | git hash-object -w --stdin) &&
 742         file=$(sha1_file $blob) &&
 743         test_when_finished "remove_object $blob" &&
 744         chmod +w "$file" &&
 745         echo garbage >>"$file" &&
 746         test_must_fail git -c core.bigfilethreshold=5 fsck 2>out &&
 747         test_i18ngrep "garbage.*$blob" out
 748 '
 749
 750 test_expect_success 'fsck detects truncated loose object' '
 751         # make it big enough that we know we will truncate in the data
 752         # portion, not the header
 753         test-tool genrandom truncate 4096 >file &&
 754         blob=$(git hash-object -w file) &&
 755         file=$(sha1_file $blob) &&
 756         test_when_finished "remove_object $blob" &&
 757         test_copy_bytes 1024 <"$file" >tmp &&
 758         rm "$file" &&
 759         mv -f tmp "$file" &&
 760
 761         # check both regular and streaming code paths
 762         test_must_fail git fsck 2>out &&
 763         test_i18ngrep corrupt.*$blob out &&
 764
 765         test_must_fail git -c core.bigfilethreshold=128 fsck 2>out &&
 766         test_i18ngrep corrupt.*$blob out
 767 '
 768
 769 # for each of type, we have one version which is referenced by another object
 770 # (and so while unreachable, not dangling), and another variant which really is
 771 # dangling.
 772 test_expect_success 'create dangling-object repository' '
 773         git init dangling &&
 774         (
 775                 cd dangling &&
 776                 blob=$(echo not-dangling | git hash-object -w --stdin) &&
 777                 dblob=$(echo dangling | git hash-object -w --stdin) &&
 778                 tree=$(printf "100644 blob %s\t%s\n" $blob one | git mktree) &&
 779                 dtree=$(printf "100644 blob %s\t%s\n" $blob two | git mktree) &&
 780                 commit=$(git commit-tree $tree) &&
 781                 dcommit=$(git commit-tree -p $commit $tree) &&
 782
 783                 cat >expect <<-EOF
 784                 dangling blob $dblob
 785                 dangling commit $dcommit
 786                 dangling tree $dtree
 787                 EOF
 788         )
 789 '
 790
 791 test_expect_success 'fsck notices dangling objects' '
 792         (
 793                 cd dangling &&
 794                 git fsck >actual &&
 795                 # the output order is non-deterministic, as it comes from a hash
 796                 sort <actual >actual.sorted &&
 797                 test_i18ncmp expect actual.sorted
 798         )
 799 '
 800
 801 test_expect_success 'fsck --connectivity-only notices dangling objects' '
 802         (
 803                 cd dangling &&
 804                 git fsck --connectivity-only >actual &&
 805                 # the output order is non-deterministic, as it comes from a hash
 806                 sort <actual >actual.sorted &&
 807                 test_i18ncmp expect actual.sorted
 808         )
 809 '
 810
 811 test_expect_success 'fsck $name notices bogus $name' '
 812         test_must_fail git fsck bogus &&
 813         test_must_fail git fsck $ZERO_OID
 814 '
 815
 816 test_expect_success 'bogus head does not fallback to all heads' '
 817         # set up a case that will cause a reachability complaint
 818         echo to-be-deleted >foo &&
 819         git add foo &&
 820         blob=$(git rev-parse :foo) &&
 821         test_when_finished "git rm --cached foo" &&
 822         remove_object $blob &&
 823         test_must_fail git fsck $ZERO_OID >out 2>&1 &&
 824         ! grep $blob out
 825 '
 826
 827 # Corrupt the checksum on the index.
 828 # Add 1 to the last byte in the SHA.
 829 corrupt_index_checksum () {
 830     perl -w -e '
 831         use Fcntl ":seek";
 832         open my $fh, "+<", ".git/index" or die "open: $!";
 833         binmode $fh;
 834         seek $fh, -1, SEEK_END or die "seek: $!";
 835         read $fh, my $in_byte, 1 or die "read: $!";
 836
 837         $in_value = unpack("C", $in_byte);
 838         $out_value = ($in_value + 1) & 255;
 839
 840         $out_byte = pack("C", $out_value);
 841
 842         seek $fh, -1, SEEK_END or die "seek: $!";
 843         print $fh $out_byte;
 844         close $fh or die "close: $!";
 845     '
 846 }
 847
 848 # Corrupt the checksum on the index and then
 849 # verify that only fsck notices.
 850 test_expect_success 'detect corrupt index file in fsck' '
 851         cp .git/index .git/index.backup &&
 852         test_when_finished "mv .git/index.backup .git/index" &&
 853         corrupt_index_checksum &&
 854         test_must_fail git fsck --cache 2>errors &&
 855         test_i18ngrep "bad index file" errors
 856 '
 857
 858 test_done