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         git config gc.auto 0 &&
  13         git config i18n.commitencoding ISO-8859-1 &&
  14         test_commit A fileA one &&
  15         git config --unset i18n.commitencoding &&
  16         git checkout HEAD^0 &&
  17         test_commit B fileB two &&
  18         git tag -d A B &&
  19         git reflog expire --expire=now --all &&
  20         >empty
  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_cmp 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_cmp 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                 echo "$*" | sed "s#..#.git/objects/&/#"
  47         } &&
  48
  49         remove_object() {
  50                 file=$(sha1_file "$*") &&
  51                 test -e "$file" &&
  52                 rm -f "$file"
  53         }
  54 '
  55
  56 test_expect_success 'object with bad sha1' '
  57         sha=$(echo blob | git hash-object -w --stdin) &&
  58         old=$(echo $sha | sed "s+^..+&/+") &&
  59         new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
  60         sha="$(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 $cmt &&
  70         test_when_finished "git update-ref -d refs/heads/bogus" &&
  71
  72         test_must_fail git fsck 2>out &&
  73         cat out &&
  74         grep "$sha.*corrupt" out
  75 '
  76
  77 test_expect_success 'branch pointing to non-commit' '
  78         git rev-parse HEAD^{tree} >.git/refs/heads/invalid &&
  79         test_when_finished "git update-ref -d refs/heads/invalid" &&
  80         test_must_fail git fsck 2>out &&
  81         cat out &&
  82         grep "not a commit" out
  83 '
  84
  85 test_expect_success 'HEAD link pointing at a funny object' '
  86         test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
  87         mv .git/HEAD .git/SAVED_HEAD &&
  88         echo 0000000000000000000000000000000000000000 >.git/HEAD &&
  89         # avoid corrupt/broken HEAD from interfering with repo discovery
  90         test_must_fail env GIT_DIR=.git git fsck 2>out &&
  91         cat out &&
  92         grep "detached HEAD points" out
  93 '
  94
  95 test_expect_success 'HEAD link pointing at a funny place' '
  96         test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
  97         mv .git/HEAD .git/SAVED_HEAD &&
  98         echo "ref: refs/funny/place" >.git/HEAD &&
  99         # avoid corrupt/broken HEAD from interfering with repo discovery
 100         test_must_fail env GIT_DIR=.git git fsck 2>out &&
 101         cat out &&
 102         grep "HEAD points to something strange" out
 103 '
 104
 105 test_expect_success 'email without @ is okay' '
 106         git cat-file commit HEAD >basis &&
 107         sed "s/@/AT/" basis >okay &&
 108         new=$(git hash-object -t commit -w --stdin <okay) &&
 109         test_when_finished "remove_object $new" &&
 110         git update-ref refs/heads/bogus "$new" &&
 111         test_when_finished "git update-ref -d refs/heads/bogus" &&
 112         git fsck 2>out &&
 113         cat out &&
 114         ! grep "commit $new" out
 115 '
 116
 117 test_expect_success 'email with embedded > is not okay' '
 118         git cat-file commit HEAD >basis &&
 119         sed "s/@[a-z]/&>/" basis >bad-email &&
 120         new=$(git hash-object -t commit -w --stdin <bad-email) &&
 121         test_when_finished "remove_object $new" &&
 122         git update-ref refs/heads/bogus "$new" &&
 123         test_when_finished "git update-ref -d refs/heads/bogus" &&
 124         test_must_fail git fsck 2>out &&
 125         cat out &&
 126         grep "error in commit $new" out
 127 '
 128
 129 test_expect_success 'missing < email delimiter is reported nicely' '
 130         git cat-file commit HEAD >basis &&
 131         sed "s/<//" basis >bad-email-2 &&
 132         new=$(git hash-object -t commit -w --stdin <bad-email-2) &&
 133         test_when_finished "remove_object $new" &&
 134         git update-ref refs/heads/bogus "$new" &&
 135         test_when_finished "git update-ref -d refs/heads/bogus" &&
 136         test_must_fail git fsck 2>out &&
 137         cat out &&
 138         grep "error in commit $new.* - bad name" out
 139 '
 140
 141 test_expect_success 'missing email is reported nicely' '
 142         git cat-file commit HEAD >basis &&
 143         sed "s/[a-z]* <[^>]*>//" basis >bad-email-3 &&
 144         new=$(git hash-object -t commit -w --stdin <bad-email-3) &&
 145         test_when_finished "remove_object $new" &&
 146         git update-ref refs/heads/bogus "$new" &&
 147         test_when_finished "git update-ref -d refs/heads/bogus" &&
 148         test_must_fail git fsck 2>out &&
 149         cat out &&
 150         grep "error in commit $new.* - missing email" out
 151 '
 152
 153 test_expect_success '> in name is reported' '
 154         git cat-file commit HEAD >basis &&
 155         sed "s/ </> </" basis >bad-email-4 &&
 156         new=$(git hash-object -t commit -w --stdin <bad-email-4) &&
 157         test_when_finished "remove_object $new" &&
 158         git update-ref refs/heads/bogus "$new" &&
 159         test_when_finished "git update-ref -d refs/heads/bogus" &&
 160         test_must_fail git fsck 2>out &&
 161         cat out &&
 162         grep "error in commit $new" out
 163 '
 164
 165 # date is 2^64 + 1
 166 test_expect_success 'integer overflow in timestamps is reported' '
 167         git cat-file commit HEAD >basis &&
 168         sed "s/^\\(author .*>\\) [0-9]*/\\1 18446744073709551617/" \
 169                 <basis >bad-timestamp &&
 170         new=$(git hash-object -t commit -w --stdin <bad-timestamp) &&
 171         test_when_finished "remove_object $new" &&
 172         git update-ref refs/heads/bogus "$new" &&
 173         test_when_finished "git update-ref -d refs/heads/bogus" &&
 174         test_must_fail git fsck 2>out &&
 175         cat out &&
 176         grep "error in commit $new.*integer overflow" out
 177 '
 178
 179 test_expect_success 'malformatted tree object' '
 180         test_when_finished "git update-ref -d refs/tags/wrong" &&
 181         test_when_finished "remove_object \$T" &&
 182         T=$(
 183                 GIT_INDEX_FILE=test-index &&
 184                 export GIT_INDEX_FILE &&
 185                 rm -f test-index &&
 186                 >x &&
 187                 git add x &&
 188                 T=$(git write-tree) &&
 189                 (
 190                         git cat-file tree $T &&
 191                         git cat-file tree $T
 192                 ) |
 193                 git hash-object -w -t tree --stdin
 194         ) &&
 195         test_must_fail git fsck 2>out &&
 196         grep "error in tree .*contains duplicate file entries" out
 197 '
 198
 199 test_expect_success 'tag pointing to nonexistent' '
 200         cat >invalid-tag <<-\EOF &&
 201         object ffffffffffffffffffffffffffffffffffffffff
 202         type commit
 203         tag invalid
 204         tagger T A Gger <tagger@example.com> 1234567890 -0000
 205
 206         This is an invalid tag.
 207         EOF
 208
 209         tag=$(git hash-object -t tag -w --stdin <invalid-tag) &&
 210         test_when_finished "remove_object $tag" &&
 211         echo $tag >.git/refs/tags/invalid &&
 212         test_when_finished "git update-ref -d refs/tags/invalid" &&
 213         test_must_fail git fsck --tags >out &&
 214         cat out &&
 215         grep "broken link" out
 216 '
 217
 218 test_expect_success 'tag pointing to something else than its type' '
 219         sha=$(echo blob | git hash-object -w --stdin) &&
 220         test_when_finished "remove_object $sha" &&
 221         cat >wrong-tag <<-EOF &&
 222         object $sha
 223         type commit
 224         tag wrong
 225         tagger T A Gger <tagger@example.com> 1234567890 -0000
 226
 227         This is an invalid tag.
 228         EOF
 229
 230         tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
 231         test_when_finished "remove_object $tag" &&
 232         echo $tag >.git/refs/tags/wrong &&
 233         test_when_finished "git update-ref -d refs/tags/wrong" &&
 234         test_must_fail git fsck --tags
 235 '
 236
 237 test_expect_success 'tag with incorrect tag name & missing tagger' '
 238         sha=$(git rev-parse HEAD) &&
 239         cat >wrong-tag <<-EOF &&
 240         object $sha
 241         type commit
 242         tag wrong name format
 243
 244         This is an invalid tag.
 245         EOF
 246
 247         tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
 248         test_when_finished "remove_object $tag" &&
 249         echo $tag >.git/refs/tags/wrong &&
 250         test_when_finished "git update-ref -d refs/tags/wrong" &&
 251         git fsck --tags 2>out &&
 252
 253         cat >expect <<-EOF &&
 254         warning in tag $tag: badTagName: invalid '\''tag'\'' name: wrong name format
 255         warning in tag $tag: missingTaggerEntry: invalid format - expected '\''tagger'\'' line
 256         EOF
 257         test_cmp expect out
 258 '
 259
 260 test_expect_success 'tag with bad tagger' '
 261         sha=$(git rev-parse HEAD) &&
 262         cat >wrong-tag <<-EOF &&
 263         object $sha
 264         type commit
 265         tag not-quite-wrong
 266         tagger Bad Tagger Name
 267
 268         This is an invalid tag.
 269         EOF
 270
 271         tag=$(git hash-object --literally -t tag -w --stdin <wrong-tag) &&
 272         test_when_finished "remove_object $tag" &&
 273         echo $tag >.git/refs/tags/wrong &&
 274         test_when_finished "git update-ref -d refs/tags/wrong" &&
 275         test_must_fail git fsck --tags 2>out &&
 276         grep "error in tag .*: invalid author/committer" out
 277 '
 278
 279 test_expect_success 'cleaned up' '
 280         git fsck >actual 2>&1 &&
 281         test_cmp empty actual
 282 '
 283
 284 test_expect_success 'rev-list --verify-objects' '
 285         git rev-list --verify-objects --all >/dev/null 2>out &&
 286         test_cmp empty out
 287 '
 288
 289 test_expect_success 'rev-list --verify-objects with bad sha1' '
 290         sha=$(echo blob | git hash-object -w --stdin) &&
 291         old=$(echo $sha | sed "s+^..+&/+") &&
 292         new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
 293         sha="$(dirname $new)$(basename $new)" &&
 294         mv .git/objects/$old .git/objects/$new &&
 295         test_when_finished "remove_object $sha" &&
 296         git update-index --add --cacheinfo 100644 $sha foo &&
 297         test_when_finished "git read-tree -u --reset HEAD" &&
 298         tree=$(git write-tree) &&
 299         test_when_finished "remove_object $tree" &&
 300         cmt=$(echo bogus | git commit-tree $tree) &&
 301         test_when_finished "remove_object $cmt" &&
 302         git update-ref refs/heads/bogus $cmt &&
 303         test_when_finished "git update-ref -d refs/heads/bogus" &&
 304
 305         test_might_fail git rev-list --verify-objects refs/heads/bogus >/dev/null 2>out &&
 306         cat out &&
 307         grep -q "error: sha1 mismatch 63ffffffffffffffffffffffffffffffffffffff" out
 308 '
 309
 310 test_expect_success 'force fsck to ignore double author' '
 311         git cat-file commit HEAD >basis &&
 312         sed "s/^author .*/&,&/" <basis | tr , \\n >multiple-authors &&
 313         new=$(git hash-object -t commit -w --stdin <multiple-authors) &&
 314         test_when_finished "remove_object $new" &&
 315         git update-ref refs/heads/bogus "$new" &&
 316         test_when_finished "git update-ref -d refs/heads/bogus" &&
 317         test_must_fail git fsck &&
 318         git -c fsck.multipleAuthors=ignore fsck
 319 '
 320
 321 _bz='\0'
 322 _bz5="$_bz$_bz$_bz$_bz$_bz"
 323 _bz20="$_bz5$_bz5$_bz5$_bz5"
 324
 325 test_expect_success 'fsck notices blob entry pointing to null sha1' '
 326         (git init null-blob &&
 327          cd null-blob &&
 328          sha=$(printf "100644 file$_bz$_bz20" |
 329                git hash-object -w --stdin -t tree) &&
 330           git fsck 2>out &&
 331           cat out &&
 332           grep "warning.*null sha1" out
 333         )
 334 '
 335
 336 test_expect_success 'fsck notices submodule entry pointing to null sha1' '
 337         (git init null-commit &&
 338          cd null-commit &&
 339          sha=$(printf "160000 submodule$_bz$_bz20" |
 340                git hash-object -w --stdin -t tree) &&
 341           git fsck 2>out &&
 342           cat out &&
 343           grep "warning.*null sha1" out
 344         )
 345 '
 346
 347 while read name path pretty; do
 348         while read mode type; do
 349                 : ${pretty:=$path}
 350                 test_expect_success "fsck notices $pretty as $type" '
 351                 (
 352                         git init $name-$type &&
 353                         cd $name-$type &&
 354                         echo content >file &&
 355                         git add file &&
 356                         git commit -m base &&
 357                         blob=$(git rev-parse :file) &&
 358                         tree=$(git rev-parse HEAD^{tree}) &&
 359                         value=$(eval "echo \$$type") &&
 360                         printf "$mode $type %s\t%s" "$value" "$path" >bad &&
 361                         bad_tree=$(git mktree <bad) &&
 362                         git fsck 2>out &&
 363                         cat out &&
 364                         grep "warning.*tree $bad_tree" out
 365                 )'
 366         done <<-\EOF
 367         100644 blob
 368         040000 tree
 369         EOF
 370 done <<-EOF
 371 dot .
 372 dotdot ..
 373 dotgit .git
 374 dotgit-case .GIT
 375 dotgit-unicode .gI${u200c}T .gI{u200c}T
 376 dotgit-case2 .Git
 377 git-tilde1 git~1
 378 dotgitdot .git.
 379 dot-backslash-case .\\\\.GIT\\\\foobar
 380 dotgit-case-backslash .git\\\\foobar
 381 EOF
 382
 383 test_expect_success 'fsck allows .Ňit' '
 384         (
 385                 git init not-dotgit &&
 386                 cd not-dotgit &&
 387                 echo content >file &&
 388                 git add file &&
 389                 git commit -m base &&
 390                 blob=$(git rev-parse :file) &&
 391                 printf "100644 blob $blob\t.\\305\\207it" >tree &&
 392                 tree=$(git mktree <tree) &&
 393                 git fsck 2>err &&
 394                 test_line_count = 0 err
 395         )
 396 '
 397
 398 # create a static test repo which is broken by omitting
 399 # one particular object ($1, which is looked up via rev-parse
 400 # in the new repository).
 401 create_repo_missing () {
 402         rm -rf missing &&
 403         git init missing &&
 404         (
 405                 cd missing &&
 406                 git commit -m one --allow-empty &&
 407                 mkdir subdir &&
 408                 echo content >subdir/file &&
 409                 git add subdir/file &&
 410                 git commit -m two &&
 411                 unrelated=$(echo unrelated | git hash-object --stdin -w) &&
 412                 git tag -m foo tag $unrelated &&
 413                 sha1=$(git rev-parse --verify "$1") &&
 414                 path=$(echo $sha1 | sed 's|..|&/|') &&
 415                 rm .git/objects/$path
 416         )
 417 }
 418
 419 test_expect_success 'fsck notices missing blob' '
 420         create_repo_missing HEAD:subdir/file &&
 421         test_must_fail git -C missing fsck
 422 '
 423
 424 test_expect_success 'fsck notices missing subtree' '
 425         create_repo_missing HEAD:subdir &&
 426         test_must_fail git -C missing fsck
 427 '
 428
 429 test_expect_success 'fsck notices missing root tree' '
 430         create_repo_missing HEAD^{tree} &&
 431         test_must_fail git -C missing fsck
 432 '
 433
 434 test_expect_success 'fsck notices missing parent' '
 435         create_repo_missing HEAD^ &&
 436         test_must_fail git -C missing fsck
 437 '
 438
 439 test_expect_success 'fsck notices missing tagged object' '
 440         create_repo_missing tag^{blob} &&
 441         test_must_fail git -C missing fsck
 442 '
 443
 444 test_expect_success 'fsck notices ref pointing to missing commit' '
 445         create_repo_missing HEAD &&
 446         test_must_fail git -C missing fsck
 447 '
 448
 449 test_expect_success 'fsck notices ref pointing to missing tag' '
 450         create_repo_missing tag &&
 451         test_must_fail git -C missing fsck
 452 '
 453
 454 test_expect_success 'fsck --connectivity-only' '
 455         rm -rf connectivity-only &&
 456         git init connectivity-only &&
 457         (
 458                 cd connectivity-only &&
 459                 touch empty &&
 460                 git add empty &&
 461                 test_commit empty &&
 462                 empty=.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391 &&
 463                 rm -f $empty &&
 464                 echo invalid >$empty &&
 465                 test_must_fail git fsck --strict &&
 466                 git fsck --strict --connectivity-only &&
 467                 tree=$(git rev-parse HEAD:) &&
 468                 suffix=${tree#??} &&
 469                 tree=.git/objects/${tree%$suffix}/$suffix &&
 470                 rm -f $tree &&
 471                 echo invalid >$tree &&
 472                 test_must_fail git fsck --strict --connectivity-only
 473         )
 474 '
 475
 476 test_done