3 test_description='git fsck random collection of tests
11 test_expect_success setup '
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 &&
20 git reflog expire --expire=now --all
23 test_expect_success 'loose objects borrowed from alternate are not missing' '
28 echo ../../../.git/objects >.git/objects/info/alternates &&
29 test_commit C fileC one &&
30 git fsck --no-dangling >../actual 2>&1
32 test_must_be_empty actual
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
40 # Corruption tests follow. Make sure to remove all traces of the
41 # specific corruption you test afterwards, lest a later test trip over
44 test_expect_success 'setup: helpers for corruption tests' '
47 firsttwo=${1%$remainder} &&
48 echo ".git/objects/$firsttwo/$remainder"
52 rm "$(sha1_file "$1")"
56 test_expect_success 'object with bad sha1' '
57 sha=$(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 $cmt &&
70 test_when_finished "git update-ref -d refs/heads/bogus" &&
72 test_must_fail git fsck 2>out &&
73 test_i18ngrep "$sha.*corrupt" out
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
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
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
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
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 $ZERO_OID >.git/worktrees/other/HEAD &&
116 test_must_fail git fsck 2>out &&
117 test_i18ngrep "worktrees/other/HEAD: detached HEAD points" out
120 test_expect_success 'other worktree HEAD link pointing at missing object' '
121 test_when_finished "rm -rf .git/worktrees other" &&
122 git worktree add other &&
123 echo "Contents missing from repo" | git hash-object --stdin >.git/worktrees/other/HEAD &&
124 test_must_fail git fsck 2>out &&
125 test_i18ngrep "worktrees/other/HEAD: invalid sha1 pointer" out
128 test_expect_success 'other worktree HEAD link pointing at a funny place' '
129 test_when_finished "rm -rf .git/worktrees other" &&
130 git worktree add other &&
131 echo "ref: refs/funny/place" >.git/worktrees/other/HEAD &&
132 test_must_fail git fsck 2>out &&
133 test_i18ngrep "worktrees/other/HEAD points to something strange" out
136 test_expect_success 'commit with multiple signatures is okay' '
137 git cat-file commit HEAD >basis &&
139 gpgsig -----BEGIN PGP SIGNATURE-----
140 VGhpcyBpcyBub3QgcmVhbGx5IGEgc2lnbmF0dXJlLg==
141 -----END PGP SIGNATURE-----
142 gpgsig-sha256 -----BEGIN PGP SIGNATURE-----
143 VGhpcyBpcyBub3QgcmVhbGx5IGEgc2lnbmF0dXJlLg==
144 -----END PGP SIGNATURE-----
146 sed -e "/^committer/q" basis >okay &&
149 sed -e "1,/^$/d" basis >>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" &&
157 ! grep "commit $new" out
160 test_expect_success 'email without @ is okay' '
161 git cat-file commit HEAD >basis &&
162 sed "s/@/AT/" basis >okay &&
163 new=$(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" &&
168 ! grep "commit $new" out
171 test_expect_success 'email with embedded > is not okay' '
172 git cat-file commit HEAD >basis &&
173 sed "s/@[a-z]/&>/" basis >bad-email &&
174 new=$(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 $new" out
182 test_expect_success 'missing < email delimiter is reported nicely' '
183 git cat-file commit HEAD >basis &&
184 sed "s/<//" basis >bad-email-2 &&
185 new=$(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 $new.* - bad name" out
193 test_expect_success 'missing email is reported nicely' '
194 git cat-file commit HEAD >basis &&
195 sed "s/[a-z]* <[^>]*>//" basis >bad-email-3 &&
196 new=$(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 $new.* - missing email" out
204 test_expect_success '> in name is reported' '
205 git cat-file commit HEAD >basis &&
206 sed "s/ </> </" basis >bad-email-4 &&
207 new=$(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 $new" out
216 test_expect_success 'integer overflow in timestamps is reported' '
217 git cat-file commit HEAD >basis &&
218 sed "s/^\\(author .*>\\) [0-9]*/\\1 18446744073709551617/" \
219 <basis >bad-timestamp &&
220 new=$(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 $new.*integer overflow" out
228 test_expect_success 'commit with NUL in header' '
229 git cat-file commit HEAD >basis &&
230 sed "s/author ./author Q/" <basis | q_to_nul >commit-NUL-header &&
231 new=$(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 $new.*unterminated header: NUL at offset" out
239 test_expect_success 'tree object with duplicate entries' '
240 test_when_finished "for i in \$T; do remove_object \$i; done" &&
242 GIT_INDEX_FILE=test-index &&
243 export GIT_INDEX_FILE &&
248 T=$(git write-tree) &&
251 git cat-file tree $T &&
254 git hash-object -w -t tree --stdin
256 test_must_fail git fsck 2>out &&
257 test_i18ngrep "error in tree .*contains duplicate file entries" out
260 check_duplicate_names () {
264 test_expect_$expect "tree object with duplicate names: $names" '
265 test_when_finished "remove_object \$blob" &&
266 test_when_finished "remove_object \$tree" &&
267 test_when_finished "remove_object \$badtree" &&
268 blob=$(echo blob | git hash-object -w --stdin) &&
269 printf "100644 blob %s\t%s\n" $blob x.2 >tree &&
270 tree=$(git mktree <tree) &&
274 */) printf "040000 tree %s\t%s\n" $tree "${name%/}" ;;
275 *) printf "100644 blob %s\t%s\n" $blob "$name" ;;
278 badtree=$(git mktree <badtree) &&
279 test_must_fail git fsck 2>out &&
280 test_i18ngrep "$badtree" out &&
281 test_i18ngrep "error in tree .*contains duplicate file entries" out
285 check_duplicate_names success x x.1 x/
286 check_duplicate_names success x x.1.2 x.1/ x/
287 check_duplicate_names success x x.1 x.1.2 x/
289 test_expect_success 'unparseable tree object' '
290 test_oid_cache <<-\EOF &&
291 junk sha1:twenty-bytes-of-junk
292 junk sha256:twenty-bytes-of-junk-twelve-more
295 test_when_finished "git update-ref -d refs/heads/wrong" &&
296 test_when_finished "remove_object \$tree_sha1" &&
297 test_when_finished "remove_object \$commit_sha1" &&
298 junk=$(test_oid junk) &&
299 tree_sha1=$(printf "100644 \0$junk" | git hash-object -t tree --stdin -w --literally) &&
300 commit_sha1=$(git commit-tree $tree_sha1) &&
301 git update-ref refs/heads/wrong $commit_sha1 &&
302 test_must_fail git fsck 2>out &&
303 test_i18ngrep "error: empty filename in tree entry" out &&
304 test_i18ngrep "$tree_sha1" out &&
305 test_i18ngrep ! "fatal: empty filename in tree entry" out
308 test_expect_success 'tree entry with type mismatch' '
309 test_when_finished "remove_object \$blob" &&
310 test_when_finished "remove_object \$tree" &&
311 test_when_finished "remove_object \$commit" &&
312 test_when_finished "git update-ref -d refs/heads/type_mismatch" &&
313 blob=$(echo blob | git hash-object -w --stdin) &&
314 blob_bin=$(echo $blob | hex2oct) &&
316 printf "40000 dir\0${blob_bin}100644 file\0${blob_bin}" |
317 git hash-object -t tree --stdin -w --literally
319 commit=$(git commit-tree $tree) &&
320 git update-ref refs/heads/type_mismatch $commit &&
321 test_must_fail git fsck >out 2>&1 &&
322 test_i18ngrep "is a blob, not a tree" out &&
323 test_i18ngrep ! "dangling blob" out
326 test_expect_success 'tag pointing to nonexistent' '
327 badoid=$(test_oid deadbeef) &&
328 cat >invalid-tag <<-EOF &&
332 tagger T A Gger <tagger@example.com> 1234567890 -0000
334 This is an invalid tag.
337 tag=$(git hash-object -t tag -w --stdin <invalid-tag) &&
338 test_when_finished "remove_object $tag" &&
339 echo $tag >.git/refs/tags/invalid &&
340 test_when_finished "git update-ref -d refs/tags/invalid" &&
341 test_must_fail git fsck --tags >out &&
342 test_i18ngrep "broken link" out
345 test_expect_success 'tag pointing to something else than its type' '
346 sha=$(echo blob | git hash-object -w --stdin) &&
347 test_when_finished "remove_object $sha" &&
348 cat >wrong-tag <<-EOF &&
352 tagger T A Gger <tagger@example.com> 1234567890 -0000
354 This is an invalid tag.
357 tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
358 test_when_finished "remove_object $tag" &&
359 echo $tag >.git/refs/tags/wrong &&
360 test_when_finished "git update-ref -d refs/tags/wrong" &&
361 test_must_fail git fsck --tags
364 test_expect_success 'tag with incorrect tag name & missing tagger' '
365 sha=$(git rev-parse HEAD) &&
366 cat >wrong-tag <<-EOF &&
369 tag wrong name format
371 This is an invalid tag.
374 tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
375 test_when_finished "remove_object $tag" &&
376 echo $tag >.git/refs/tags/wrong &&
377 test_when_finished "git update-ref -d refs/tags/wrong" &&
378 git fsck --tags 2>out &&
380 cat >expect <<-EOF &&
381 warning in tag $tag: badTagName: invalid '\''tag'\'' name: wrong name format
382 warning in tag $tag: missingTaggerEntry: invalid format - expected '\''tagger'\'' line
384 test_i18ncmp expect out
387 test_expect_success 'tag with bad tagger' '
388 sha=$(git rev-parse HEAD) &&
389 cat >wrong-tag <<-EOF &&
393 tagger Bad Tagger Name
395 This is an invalid tag.
398 tag=$(git hash-object --literally -t tag -w --stdin <wrong-tag) &&
399 test_when_finished "remove_object $tag" &&
400 echo $tag >.git/refs/tags/wrong &&
401 test_when_finished "git update-ref -d refs/tags/wrong" &&
402 test_must_fail git fsck --tags 2>out &&
403 test_i18ngrep "error in tag .*: invalid author/committer" out
406 test_expect_success 'tag with NUL in header' '
407 sha=$(git rev-parse HEAD) &&
408 q_to_nul >tag-NUL-header <<-EOF &&
411 tag contains-Q-in-header
412 tagger T A Gger <tagger@example.com> 1234567890 -0000
414 This is an invalid tag.
417 tag=$(git hash-object --literally -t tag -w --stdin <tag-NUL-header) &&
418 test_when_finished "remove_object $tag" &&
419 echo $tag >.git/refs/tags/wrong &&
420 test_when_finished "git update-ref -d refs/tags/wrong" &&
421 test_must_fail git fsck --tags 2>out &&
422 test_i18ngrep "error in tag $tag.*unterminated header: NUL at offset" out
425 test_expect_success 'cleaned up' '
426 git fsck >actual 2>&1 &&
427 test_must_be_empty actual
430 test_expect_success 'rev-list --verify-objects' '
431 git rev-list --verify-objects --all >/dev/null 2>out &&
432 test_must_be_empty out
435 test_expect_success 'rev-list --verify-objects with bad sha1' '
436 sha=$(echo blob | git hash-object -w --stdin) &&
437 old=$(test_oid_to_path $sha) &&
438 new=$(dirname $old)/$(test_oid ff_2) &&
439 sha="$(dirname $new)$(basename $new)" &&
440 mv .git/objects/$old .git/objects/$new &&
441 test_when_finished "remove_object $sha" &&
442 git update-index --add --cacheinfo 100644 $sha foo &&
443 test_when_finished "git read-tree -u --reset HEAD" &&
444 tree=$(git write-tree) &&
445 test_when_finished "remove_object $tree" &&
446 cmt=$(echo bogus | git commit-tree $tree) &&
447 test_when_finished "remove_object $cmt" &&
448 git update-ref refs/heads/bogus $cmt &&
449 test_when_finished "git update-ref -d refs/heads/bogus" &&
451 test_might_fail git rev-list --verify-objects refs/heads/bogus >/dev/null 2>out &&
452 test_i18ngrep -q "error: hash mismatch $(dirname $new)$(test_oid ff_2)" out
455 test_expect_success 'force fsck to ignore double author' '
456 git cat-file commit HEAD >basis &&
457 sed "s/^author .*/&,&/" <basis | tr , \\n >multiple-authors &&
458 new=$(git hash-object -t commit -w --stdin <multiple-authors) &&
459 test_when_finished "remove_object $new" &&
460 git update-ref refs/heads/bogus "$new" &&
461 test_when_finished "git update-ref -d refs/heads/bogus" &&
462 test_must_fail git fsck &&
463 git -c fsck.multipleAuthors=ignore fsck
467 _bzoid=$(printf $ZERO_OID | sed -e 's/00/\\0/g')
469 test_expect_success 'fsck notices blob entry pointing to null sha1' '
470 (git init null-blob &&
472 sha=$(printf "100644 file$_bz$_bzoid" |
473 git hash-object -w --stdin -t tree) &&
475 test_i18ngrep "warning.*null sha1" out
479 test_expect_success 'fsck notices submodule entry pointing to null sha1' '
480 (git init null-commit &&
482 sha=$(printf "160000 submodule$_bz$_bzoid" |
483 git hash-object -w --stdin -t tree) &&
485 test_i18ngrep "warning.*null sha1" out
489 while read name path pretty; do
490 while read mode type; do
492 test_expect_success "fsck notices $pretty as $type" '
494 git init $name-$type &&
496 git config core.protectNTFS false &&
497 echo content >file &&
499 git commit -m base &&
500 blob=$(git rev-parse :file) &&
501 tree=$(git rev-parse HEAD^{tree}) &&
502 value=$(eval "echo \$$type") &&
503 printf "$mode $type %s\t%s" "$value" "$path" >bad &&
504 bad_tree=$(git mktree <bad) &&
506 test_i18ngrep "warning.*tree $bad_tree" out
517 dotgit-unicode .gI${u200c}T .gI{u200c}T
521 dot-backslash-case .\\\\.GIT\\\\foobar
522 dotgit-case-backslash .git\\\\foobar
525 test_expect_success 'fsck allows .Ňit' '
527 git init not-dotgit &&
529 echo content >file &&
531 git commit -m base &&
532 blob=$(git rev-parse :file) &&
533 printf "100644 blob $blob\t.\\305\\207it" >tree &&
534 tree=$(git mktree <tree) &&
536 test_line_count = 0 err
540 test_expect_success 'NUL in commit' '
541 rm -fr nul-in-commit &&
542 git init nul-in-commit &&
545 git commit --allow-empty -m "initial commitQNUL after message" &&
546 git cat-file commit HEAD >original &&
547 q_to_nul <original >munged &&
548 git hash-object -w -t commit --stdin <munged >name &&
549 git branch bad $(cat name) &&
551 test_must_fail git -c fsck.nulInCommit=error fsck 2>warn.1 &&
552 test_i18ngrep nulInCommit warn.1 &&
554 test_i18ngrep nulInCommit warn.2
558 # create a static test repo which is broken by omitting
559 # one particular object ($1, which is looked up via rev-parse
560 # in the new repository).
561 create_repo_missing () {
566 git commit -m one --allow-empty &&
568 echo content >subdir/file &&
569 git add subdir/file &&
571 unrelated=$(echo unrelated | git hash-object --stdin -w) &&
572 git tag -m foo tag $unrelated &&
573 sha1=$(git rev-parse --verify "$1") &&
574 path=$(echo $sha1 | sed 's|..|&/|') &&
575 rm .git/objects/$path
579 test_expect_success 'fsck notices missing blob' '
580 create_repo_missing HEAD:subdir/file &&
581 test_must_fail git -C missing fsck
584 test_expect_success 'fsck notices missing subtree' '
585 create_repo_missing HEAD:subdir &&
586 test_must_fail git -C missing fsck
589 test_expect_success 'fsck notices missing root tree' '
590 create_repo_missing HEAD^{tree} &&
591 test_must_fail git -C missing fsck
594 test_expect_success 'fsck notices missing parent' '
595 create_repo_missing HEAD^ &&
596 test_must_fail git -C missing fsck
599 test_expect_success 'fsck notices missing tagged object' '
600 create_repo_missing tag^{blob} &&
601 test_must_fail git -C missing fsck
604 test_expect_success 'fsck notices ref pointing to missing commit' '
605 create_repo_missing HEAD &&
606 test_must_fail git -C missing fsck
609 test_expect_success 'fsck notices ref pointing to missing tag' '
610 create_repo_missing tag &&
611 test_must_fail git -C missing fsck
614 test_expect_success 'fsck --connectivity-only' '
615 rm -rf connectivity-only &&
616 git init connectivity-only &&
618 cd connectivity-only &&
623 # Drop the index now; we want to be sure that we
624 # recursively notice the broken objects
625 # because they are reachable from refs, not because
626 # they are in the index.
629 # corrupt the blob, but in a way that we can still identify
630 # its type. That lets us see that --connectivity-only is
631 # not actually looking at the contents, but leaves it
632 # free to examine the type if it chooses.
633 empty=.git/objects/$(test_oid_to_path $EMPTY_BLOB) &&
634 blob=$(echo unrelated | git hash-object -w --stdin) &&
635 mv -f $(sha1_file $blob) $empty &&
637 test_must_fail git fsck --strict &&
638 git fsck --strict --connectivity-only &&
639 tree=$(git rev-parse HEAD:) &&
641 tree=.git/objects/${tree%$suffix}/$suffix &&
643 echo invalid >$tree &&
644 test_must_fail git fsck --strict --connectivity-only
648 test_expect_success 'fsck --connectivity-only with explicit head' '
649 rm -rf connectivity-only &&
650 git init connectivity-only &&
652 cd connectivity-only &&
655 tree=$(git rev-parse HEAD^{tree}) &&
656 remove_object $(git rev-parse HEAD:foo.t) &&
657 test_must_fail git fsck --connectivity-only $tree
661 test_expect_success 'fsck --name-objects' '
662 rm -rf name-objects &&
663 git init name-objects &&
666 test_commit julius caesar.t &&
667 test_commit augustus &&
668 test_commit caesar &&
669 remove_object $(git rev-parse julius:caesar.t) &&
670 test_must_fail git fsck --name-objects >out &&
671 tree=$(git rev-parse --verify julius:) &&
672 test_i18ngrep "$tree (refs/tags/julius:" out
676 test_expect_success 'alternate objects are correctly blamed' '
677 test_when_finished "rm -rf alt.git .git/objects/info/alternates" &&
678 name=$(test_oid numeric) &&
679 path=$(test_oid_to_path "$name") &&
680 git init --bare alt.git &&
681 echo "../../alt.git/objects" >.git/objects/info/alternates &&
682 mkdir alt.git/objects/$(dirname $path) &&
683 >alt.git/objects/$(dirname $path)/$(basename $path) &&
684 test_must_fail git fsck >out 2>&1 &&
685 test_i18ngrep alt.git out
688 test_expect_success 'fsck errors in packed objects' '
689 git cat-file commit HEAD >basis &&
690 sed "s/</one/" basis >one &&
691 sed "s/</foo/" basis >two &&
692 one=$(git hash-object -t commit -w one) &&
693 two=$(git hash-object -t commit -w two) &&
698 } | git pack-objects .git/objects/pack/pack
700 test_when_finished "rm -f .git/objects/pack/pack-$pack.*" &&
701 remove_object $one &&
702 remove_object $two &&
703 test_must_fail git fsck 2>out &&
704 test_i18ngrep "error in commit $one.* - bad name" out &&
705 test_i18ngrep "error in commit $two.* - bad name" out &&
709 test_expect_success 'fsck fails on corrupt packfile' '
710 hsh=$(git commit-tree -m mycommit HEAD^{tree}) &&
711 pack=$(echo $hsh | git pack-objects .git/objects/pack/pack) &&
713 # Corrupt the first byte of the first object. (It contains 3 type bits,
714 # at least one of which is not zero, so setting the first byte to 0 is
716 chmod a+w .git/objects/pack/pack-$pack.pack &&
717 printf '\0' | dd of=.git/objects/pack/pack-$pack.pack bs=1 conv=notrunc seek=12 &&
719 test_when_finished "rm -f .git/objects/pack/pack-$pack.*" &&
720 remove_object $hsh &&
721 test_must_fail git fsck 2>out &&
722 test_i18ngrep "checksum mismatch" out
725 test_expect_success 'fsck finds problems in duplicate loose objects' '
726 rm -rf broken-duplicate &&
727 git init broken-duplicate &&
729 cd broken-duplicate &&
730 test_commit duplicate &&
731 # no "-d" here, so we end up with duplicates
733 # now corrupt the loose copy
734 file=$(sha1_file "$(git rev-parse HEAD)") &&
736 echo broken >"$file" &&
737 test_must_fail git fsck
741 test_expect_success 'fsck detects trailing loose garbage (commit)' '
742 git cat-file commit HEAD >basis &&
743 echo bump-commit-sha1 >>basis &&
744 commit=$(git hash-object -w -t commit basis) &&
745 file=$(sha1_file $commit) &&
746 test_when_finished "remove_object $commit" &&
748 echo garbage >>"$file" &&
749 test_must_fail git fsck 2>out &&
750 test_i18ngrep "garbage.*$commit" out
753 test_expect_success 'fsck detects trailing loose garbage (large blob)' '
754 blob=$(echo trailing | git hash-object -w --stdin) &&
755 file=$(sha1_file $blob) &&
756 test_when_finished "remove_object $blob" &&
758 echo garbage >>"$file" &&
759 test_must_fail git -c core.bigfilethreshold=5 fsck 2>out &&
760 test_i18ngrep "garbage.*$blob" out
763 test_expect_success 'fsck detects truncated loose object' '
764 # make it big enough that we know we will truncate in the data
765 # portion, not the header
766 test-tool genrandom truncate 4096 >file &&
767 blob=$(git hash-object -w file) &&
768 file=$(sha1_file $blob) &&
769 test_when_finished "remove_object $blob" &&
770 test_copy_bytes 1024 <"$file" >tmp &&
774 # check both regular and streaming code paths
775 test_must_fail git fsck 2>out &&
776 test_i18ngrep corrupt.*$blob out &&
778 test_must_fail git -c core.bigfilethreshold=128 fsck 2>out &&
779 test_i18ngrep corrupt.*$blob out
782 # for each of type, we have one version which is referenced by another object
783 # (and so while unreachable, not dangling), and another variant which really is
785 test_expect_success 'create dangling-object repository' '
789 blob=$(echo not-dangling | git hash-object -w --stdin) &&
790 dblob=$(echo dangling | git hash-object -w --stdin) &&
791 tree=$(printf "100644 blob %s\t%s\n" $blob one | git mktree) &&
792 dtree=$(printf "100644 blob %s\t%s\n" $blob two | git mktree) &&
793 commit=$(git commit-tree $tree) &&
794 dcommit=$(git commit-tree -p $commit $tree) &&
798 dangling commit $dcommit
804 test_expect_success 'fsck notices dangling objects' '
808 # the output order is non-deterministic, as it comes from a hash
809 sort <actual >actual.sorted &&
810 test_i18ncmp expect actual.sorted
814 test_expect_success 'fsck --connectivity-only notices dangling objects' '
817 git fsck --connectivity-only >actual &&
818 # the output order is non-deterministic, as it comes from a hash
819 sort <actual >actual.sorted &&
820 test_i18ncmp expect actual.sorted
824 test_expect_success 'fsck $name notices bogus $name' '
825 test_must_fail git fsck bogus &&
826 test_must_fail git fsck $ZERO_OID
829 test_expect_success 'bogus head does not fallback to all heads' '
830 # set up a case that will cause a reachability complaint
831 echo to-be-deleted >foo &&
833 blob=$(git rev-parse :foo) &&
834 test_when_finished "git rm --cached foo" &&
835 remove_object $blob &&
836 test_must_fail git fsck $ZERO_OID >out 2>&1 &&
840 # Corrupt the checksum on the index.
841 # Add 1 to the last byte in the SHA.
842 corrupt_index_checksum () {
845 open my $fh, "+<", ".git/index" or die "open: $!";
847 seek $fh, -1, SEEK_END or die "seek: $!";
848 read $fh, my $in_byte, 1 or die "read: $!";
850 $in_value = unpack("C", $in_byte);
851 $out_value = ($in_value + 1) & 255;
853 $out_byte = pack("C", $out_value);
855 seek $fh, -1, SEEK_END or die "seek: $!";
857 close $fh or die "close: $!";
861 # Corrupt the checksum on the index and then
862 # verify that only fsck notices.
863 test_expect_success 'detect corrupt index file in fsck' '
864 cp .git/index .git/index.backup &&
865 test_when_finished "mv .git/index.backup .git/index" &&
866 corrupt_index_checksum &&
867 test_must_fail git fsck --cache 2>errors &&
868 test_i18ngrep "bad index file" errors