e20e8fa8301607b94cff7c42e83545f072d5191f
[git/git.git] / 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 '
21
22 test_expect_success 'loose objects borrowed from alternate are not missing' '
23 mkdir another &&
24 (
25 cd another &&
26 git init &&
27 echo ../../../.git/objects >.git/objects/info/alternates &&
28 test_commit C fileC one &&
29 git fsck --no-dangling >../actual 2>&1
30 ) &&
31 test_must_be_empty actual
32 '
33
34 test_expect_success 'HEAD is part of refs, valid objects appear valid' '
35 git fsck >actual 2>&1 &&
36 test_must_be_empty actual
37 '
38
39 # Corruption tests follow. Make sure to remove all traces of the
40 # specific corruption you test afterwards, lest a later test trip over
41 # it.
42
43 test_expect_success 'setup: helpers for corruption tests' '
44 sha1_file() {
45 remainder=${1#??} &&
46 firsttwo=${1%$remainder} &&
47 echo ".git/objects/$firsttwo/$remainder"
48 } &&
49
50 remove_object() {
51 rm "$(sha1_file "$1")"
52 }
53 '
54
55 test_expect_success 'object with bad sha1' '
56 sha=$(echo blob | git hash-object -w --stdin) &&
57 old=$(echo $sha | sed "s+^..+&/+") &&
58 new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
59 sha="$(dirname $new)$(basename $new)" &&
60 mv .git/objects/$old .git/objects/$new &&
61 test_when_finished "remove_object $sha" &&
62 git update-index --add --cacheinfo 100644 $sha foo &&
63 test_when_finished "git read-tree -u --reset HEAD" &&
64 tree=$(git write-tree) &&
65 test_when_finished "remove_object $tree" &&
66 cmt=$(echo bogus | git commit-tree $tree) &&
67 test_when_finished "remove_object $cmt" &&
68 git update-ref refs/heads/bogus $cmt &&
69 test_when_finished "git update-ref -d refs/heads/bogus" &&
70
71 test_must_fail git fsck 2>out &&
72 cat out &&
73 grep "$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 cat out &&
81 grep "not a commit" out
82 '
83
84 test_expect_success 'HEAD link pointing at a funny object' '
85 test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
86 mv .git/HEAD .git/SAVED_HEAD &&
87 echo 0000000000000000000000000000000000000000 >.git/HEAD &&
88 # avoid corrupt/broken HEAD from interfering with repo discovery
89 test_must_fail env GIT_DIR=.git git fsck 2>out &&
90 cat out &&
91 grep "detached HEAD points" out
92 '
93
94 test_expect_success 'HEAD link pointing at a funny place' '
95 test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
96 mv .git/HEAD .git/SAVED_HEAD &&
97 echo "ref: refs/funny/place" >.git/HEAD &&
98 # avoid corrupt/broken HEAD from interfering with repo discovery
99 test_must_fail env GIT_DIR=.git git fsck 2>out &&
100 cat out &&
101 grep "HEAD points to something strange" out
102 '
103
104 test_expect_success 'HEAD link pointing at a funny object (from different wt)' '
105 test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
106 test_when_finished "rm -rf .git/worktrees wt" &&
107 git worktree add wt &&
108 mv .git/HEAD .git/SAVED_HEAD &&
109 echo $ZERO_OID >.git/HEAD &&
110 # avoid corrupt/broken HEAD from interfering with repo discovery
111 test_must_fail git -C wt fsck 2>out &&
112 grep "main-worktree/HEAD: detached HEAD points" out
113 '
114
115 test_expect_success 'other worktree HEAD link pointing at a funny object' '
116 test_when_finished "rm -rf .git/worktrees other" &&
117 git worktree add other &&
118 echo $ZERO_OID >.git/worktrees/other/HEAD &&
119 test_must_fail git fsck 2>out &&
120 grep "worktrees/other/HEAD: detached HEAD points" out
121 '
122
123 test_expect_success 'other worktree HEAD link pointing at missing object' '
124 test_when_finished "rm -rf .git/worktrees other" &&
125 git worktree add other &&
126 echo "Contents missing from repo" | git hash-object --stdin >.git/worktrees/other/HEAD &&
127 test_must_fail git fsck 2>out &&
128 grep "worktrees/other/HEAD: invalid sha1 pointer" out
129 '
130
131 test_expect_success 'other worktree HEAD link pointing at a funny place' '
132 test_when_finished "rm -rf .git/worktrees other" &&
133 git worktree add other &&
134 echo "ref: refs/funny/place" >.git/worktrees/other/HEAD &&
135 test_must_fail git fsck 2>out &&
136 grep "worktrees/other/HEAD points to something strange" out
137 '
138
139 test_expect_success 'email without @ is okay' '
140 git cat-file commit HEAD >basis &&
141 sed "s/@/AT/" basis >okay &&
142 new=$(git hash-object -t commit -w --stdin <okay) &&
143 test_when_finished "remove_object $new" &&
144 git update-ref refs/heads/bogus "$new" &&
145 test_when_finished "git update-ref -d refs/heads/bogus" &&
146 git fsck 2>out &&
147 cat out &&
148 ! grep "commit $new" out
149 '
150
151 test_expect_success 'email with embedded > is not okay' '
152 git cat-file commit HEAD >basis &&
153 sed "s/@[a-z]/&>/" basis >bad-email &&
154 new=$(git hash-object -t commit -w --stdin <bad-email) &&
155 test_when_finished "remove_object $new" &&
156 git update-ref refs/heads/bogus "$new" &&
157 test_when_finished "git update-ref -d refs/heads/bogus" &&
158 test_must_fail git fsck 2>out &&
159 cat out &&
160 grep "error in commit $new" out
161 '
162
163 test_expect_success 'missing < email delimiter is reported nicely' '
164 git cat-file commit HEAD >basis &&
165 sed "s/<//" basis >bad-email-2 &&
166 new=$(git hash-object -t commit -w --stdin <bad-email-2) &&
167 test_when_finished "remove_object $new" &&
168 git update-ref refs/heads/bogus "$new" &&
169 test_when_finished "git update-ref -d refs/heads/bogus" &&
170 test_must_fail git fsck 2>out &&
171 cat out &&
172 grep "error in commit $new.* - bad name" out
173 '
174
175 test_expect_success 'missing email is reported nicely' '
176 git cat-file commit HEAD >basis &&
177 sed "s/[a-z]* <[^>]*>//" basis >bad-email-3 &&
178 new=$(git hash-object -t commit -w --stdin <bad-email-3) &&
179 test_when_finished "remove_object $new" &&
180 git update-ref refs/heads/bogus "$new" &&
181 test_when_finished "git update-ref -d refs/heads/bogus" &&
182 test_must_fail git fsck 2>out &&
183 cat out &&
184 grep "error in commit $new.* - missing email" out
185 '
186
187 test_expect_success '> in name is reported' '
188 git cat-file commit HEAD >basis &&
189 sed "s/ </> </" basis >bad-email-4 &&
190 new=$(git hash-object -t commit -w --stdin <bad-email-4) &&
191 test_when_finished "remove_object $new" &&
192 git update-ref refs/heads/bogus "$new" &&
193 test_when_finished "git update-ref -d refs/heads/bogus" &&
194 test_must_fail git fsck 2>out &&
195 cat out &&
196 grep "error in commit $new" out
197 '
198
199 # date is 2^64 + 1
200 test_expect_success 'integer overflow in timestamps is reported' '
201 git cat-file commit HEAD >basis &&
202 sed "s/^\\(author .*>\\) [0-9]*/\\1 18446744073709551617/" \
203 <basis >bad-timestamp &&
204 new=$(git hash-object -t commit -w --stdin <bad-timestamp) &&
205 test_when_finished "remove_object $new" &&
206 git update-ref refs/heads/bogus "$new" &&
207 test_when_finished "git update-ref -d refs/heads/bogus" &&
208 test_must_fail git fsck 2>out &&
209 cat out &&
210 grep "error in commit $new.*integer overflow" out
211 '
212
213 test_expect_success 'commit with NUL in header' '
214 git cat-file commit HEAD >basis &&
215 sed "s/author ./author Q/" <basis | q_to_nul >commit-NUL-header &&
216 new=$(git hash-object -t commit -w --stdin <commit-NUL-header) &&
217 test_when_finished "remove_object $new" &&
218 git update-ref refs/heads/bogus "$new" &&
219 test_when_finished "git update-ref -d refs/heads/bogus" &&
220 test_must_fail git fsck 2>out &&
221 cat out &&
222 grep "error in commit $new.*unterminated header: NUL at offset" out
223 '
224
225 test_expect_success 'tree object with duplicate entries' '
226 test_when_finished "for i in \$T; do remove_object \$i; done" &&
227 T=$(
228 GIT_INDEX_FILE=test-index &&
229 export GIT_INDEX_FILE &&
230 rm -f test-index &&
231 >x &&
232 git add x &&
233 git rev-parse :x &&
234 T=$(git write-tree) &&
235 echo $T &&
236 (
237 git cat-file tree $T &&
238 git cat-file tree $T
239 ) |
240 git hash-object -w -t tree --stdin
241 ) &&
242 test_must_fail git fsck 2>out &&
243 grep "error in tree .*contains duplicate file entries" out
244 '
245
246 test_expect_success 'unparseable tree object' '
247 test_when_finished "git update-ref -d refs/heads/wrong" &&
248 test_when_finished "remove_object \$tree_sha1" &&
249 test_when_finished "remove_object \$commit_sha1" &&
250 tree_sha1=$(printf "100644 \0twenty-bytes-of-junk" | git hash-object -t tree --stdin -w --literally) &&
251 commit_sha1=$(git commit-tree $tree_sha1) &&
252 git update-ref refs/heads/wrong $commit_sha1 &&
253 test_must_fail git fsck 2>out &&
254 test_i18ngrep "error: empty filename in tree entry" out &&
255 test_i18ngrep "$tree_sha1" out &&
256 test_i18ngrep ! "fatal: empty filename in tree entry" out
257 '
258
259 hex2oct() {
260 perl -ne 'printf "\\%03o", hex for /../g'
261 }
262
263 test_expect_success 'tree entry with type mismatch' '
264 test_when_finished "remove_object \$blob" &&
265 test_when_finished "remove_object \$tree" &&
266 test_when_finished "remove_object \$commit" &&
267 test_when_finished "git update-ref -d refs/heads/type_mismatch" &&
268 blob=$(echo blob | git hash-object -w --stdin) &&
269 blob_bin=$(echo $blob | hex2oct) &&
270 tree=$(
271 printf "40000 dir\0${blob_bin}100644 file\0${blob_bin}" |
272 git hash-object -t tree --stdin -w --literally
273 ) &&
274 commit=$(git commit-tree $tree) &&
275 git update-ref refs/heads/type_mismatch $commit &&
276 test_must_fail git fsck >out 2>&1 &&
277 test_i18ngrep "is a blob, not a tree" out &&
278 test_i18ngrep ! "dangling blob" out
279 '
280
281 test_expect_success 'tag pointing to nonexistent' '
282 cat >invalid-tag <<-\EOF &&
283 object ffffffffffffffffffffffffffffffffffffffff
284 type commit
285 tag invalid
286 tagger T A Gger <tagger@example.com> 1234567890 -0000
287
288 This is an invalid tag.
289 EOF
290
291 tag=$(git hash-object -t tag -w --stdin <invalid-tag) &&
292 test_when_finished "remove_object $tag" &&
293 echo $tag >.git/refs/tags/invalid &&
294 test_when_finished "git update-ref -d refs/tags/invalid" &&
295 test_must_fail git fsck --tags >out &&
296 cat out &&
297 grep "broken link" out
298 '
299
300 test_expect_success 'tag pointing to something else than its type' '
301 sha=$(echo blob | git hash-object -w --stdin) &&
302 test_when_finished "remove_object $sha" &&
303 cat >wrong-tag <<-EOF &&
304 object $sha
305 type commit
306 tag wrong
307 tagger T A Gger <tagger@example.com> 1234567890 -0000
308
309 This is an invalid tag.
310 EOF
311
312 tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
313 test_when_finished "remove_object $tag" &&
314 echo $tag >.git/refs/tags/wrong &&
315 test_when_finished "git update-ref -d refs/tags/wrong" &&
316 test_must_fail git fsck --tags
317 '
318
319 test_expect_success 'tag with incorrect tag name & missing tagger' '
320 sha=$(git rev-parse HEAD) &&
321 cat >wrong-tag <<-EOF &&
322 object $sha
323 type commit
324 tag wrong name format
325
326 This is an invalid tag.
327 EOF
328
329 tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
330 test_when_finished "remove_object $tag" &&
331 echo $tag >.git/refs/tags/wrong &&
332 test_when_finished "git update-ref -d refs/tags/wrong" &&
333 git fsck --tags 2>out &&
334
335 cat >expect <<-EOF &&
336 warning in tag $tag: badTagName: invalid '\''tag'\'' name: wrong name format
337 warning in tag $tag: missingTaggerEntry: invalid format - expected '\''tagger'\'' line
338 EOF
339 test_cmp expect out
340 '
341
342 test_expect_success 'tag with bad tagger' '
343 sha=$(git rev-parse HEAD) &&
344 cat >wrong-tag <<-EOF &&
345 object $sha
346 type commit
347 tag not-quite-wrong
348 tagger Bad Tagger Name
349
350 This is an invalid tag.
351 EOF
352
353 tag=$(git hash-object --literally -t tag -w --stdin <wrong-tag) &&
354 test_when_finished "remove_object $tag" &&
355 echo $tag >.git/refs/tags/wrong &&
356 test_when_finished "git update-ref -d refs/tags/wrong" &&
357 test_must_fail git fsck --tags 2>out &&
358 grep "error in tag .*: invalid author/committer" out
359 '
360
361 test_expect_success 'tag with NUL in header' '
362 sha=$(git rev-parse HEAD) &&
363 q_to_nul >tag-NUL-header <<-EOF &&
364 object $sha
365 type commit
366 tag contains-Q-in-header
367 tagger T A Gger <tagger@example.com> 1234567890 -0000
368
369 This is an invalid tag.
370 EOF
371
372 tag=$(git hash-object --literally -t tag -w --stdin <tag-NUL-header) &&
373 test_when_finished "remove_object $tag" &&
374 echo $tag >.git/refs/tags/wrong &&
375 test_when_finished "git update-ref -d refs/tags/wrong" &&
376 test_must_fail git fsck --tags 2>out &&
377 cat out &&
378 grep "error in tag $tag.*unterminated header: NUL at offset" out
379 '
380
381 test_expect_success 'cleaned up' '
382 git fsck >actual 2>&1 &&
383 test_must_be_empty actual
384 '
385
386 test_expect_success 'rev-list --verify-objects' '
387 git rev-list --verify-objects --all >/dev/null 2>out &&
388 test_must_be_empty out
389 '
390
391 test_expect_success 'rev-list --verify-objects with bad sha1' '
392 sha=$(echo blob | git hash-object -w --stdin) &&
393 old=$(echo $sha | sed "s+^..+&/+") &&
394 new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
395 sha="$(dirname $new)$(basename $new)" &&
396 mv .git/objects/$old .git/objects/$new &&
397 test_when_finished "remove_object $sha" &&
398 git update-index --add --cacheinfo 100644 $sha foo &&
399 test_when_finished "git read-tree -u --reset HEAD" &&
400 tree=$(git write-tree) &&
401 test_when_finished "remove_object $tree" &&
402 cmt=$(echo bogus | git commit-tree $tree) &&
403 test_when_finished "remove_object $cmt" &&
404 git update-ref refs/heads/bogus $cmt &&
405 test_when_finished "git update-ref -d refs/heads/bogus" &&
406
407 test_might_fail git rev-list --verify-objects refs/heads/bogus >/dev/null 2>out &&
408 cat out &&
409 test_i18ngrep -q "error: sha1 mismatch 63ffffffffffffffffffffffffffffffffffffff" out
410 '
411
412 test_expect_success 'force fsck to ignore double author' '
413 git cat-file commit HEAD >basis &&
414 sed "s/^author .*/&,&/" <basis | tr , \\n >multiple-authors &&
415 new=$(git hash-object -t commit -w --stdin <multiple-authors) &&
416 test_when_finished "remove_object $new" &&
417 git update-ref refs/heads/bogus "$new" &&
418 test_when_finished "git update-ref -d refs/heads/bogus" &&
419 test_must_fail git fsck &&
420 git -c fsck.multipleAuthors=ignore fsck
421 '
422
423 _bz='\0'
424 _bz5="$_bz$_bz$_bz$_bz$_bz"
425 _bz20="$_bz5$_bz5$_bz5$_bz5"
426
427 test_expect_success 'fsck notices blob entry pointing to null sha1' '
428 (git init null-blob &&
429 cd null-blob &&
430 sha=$(printf "100644 file$_bz$_bz20" |
431 git hash-object -w --stdin -t tree) &&
432 git fsck 2>out &&
433 cat out &&
434 grep "warning.*null sha1" out
435 )
436 '
437
438 test_expect_success 'fsck notices submodule entry pointing to null sha1' '
439 (git init null-commit &&
440 cd null-commit &&
441 sha=$(printf "160000 submodule$_bz$_bz20" |
442 git hash-object -w --stdin -t tree) &&
443 git fsck 2>out &&
444 cat out &&
445 grep "warning.*null sha1" out
446 )
447 '
448
449 while read name path pretty; do
450 while read mode type; do
451 : ${pretty:=$path}
452 test_expect_success "fsck notices $pretty as $type" '
453 (
454 git init $name-$type &&
455 cd $name-$type &&
456 echo content >file &&
457 git add file &&
458 git commit -m base &&
459 blob=$(git rev-parse :file) &&
460 tree=$(git rev-parse HEAD^{tree}) &&
461 value=$(eval "echo \$$type") &&
462 printf "$mode $type %s\t%s" "$value" "$path" >bad &&
463 bad_tree=$(git mktree <bad) &&
464 git fsck 2>out &&
465 cat out &&
466 grep "warning.*tree $bad_tree" out
467 )'
468 done <<-\EOF
469 100644 blob
470 040000 tree
471 EOF
472 done <<-EOF
473 dot .
474 dotdot ..
475 dotgit .git
476 dotgit-case .GIT
477 dotgit-unicode .gI${u200c}T .gI{u200c}T
478 dotgit-case2 .Git
479 git-tilde1 git~1
480 dotgitdot .git.
481 dot-backslash-case .\\\\.GIT\\\\foobar
482 dotgit-case-backslash .git\\\\foobar
483 EOF
484
485 test_expect_success 'fsck allows .Ňit' '
486 (
487 git init not-dotgit &&
488 cd not-dotgit &&
489 echo content >file &&
490 git add file &&
491 git commit -m base &&
492 blob=$(git rev-parse :file) &&
493 printf "100644 blob $blob\t.\\305\\207it" >tree &&
494 tree=$(git mktree <tree) &&
495 git fsck 2>err &&
496 test_line_count = 0 err
497 )
498 '
499
500 test_expect_success 'NUL in commit' '
501 rm -fr nul-in-commit &&
502 git init nul-in-commit &&
503 (
504 cd nul-in-commit &&
505 git commit --allow-empty -m "initial commitQNUL after message" &&
506 git cat-file commit HEAD >original &&
507 q_to_nul <original >munged &&
508 git hash-object -w -t commit --stdin <munged >name &&
509 git branch bad $(cat name) &&
510
511 test_must_fail git -c fsck.nulInCommit=error fsck 2>warn.1 &&
512 grep nulInCommit warn.1 &&
513 git fsck 2>warn.2 &&
514 grep nulInCommit warn.2
515 )
516 '
517
518 # create a static test repo which is broken by omitting
519 # one particular object ($1, which is looked up via rev-parse
520 # in the new repository).
521 create_repo_missing () {
522 rm -rf missing &&
523 git init missing &&
524 (
525 cd missing &&
526 git commit -m one --allow-empty &&
527 mkdir subdir &&
528 echo content >subdir/file &&
529 git add subdir/file &&
530 git commit -m two &&
531 unrelated=$(echo unrelated | git hash-object --stdin -w) &&
532 git tag -m foo tag $unrelated &&
533 sha1=$(git rev-parse --verify "$1") &&
534 path=$(echo $sha1 | sed 's|..|&/|') &&
535 rm .git/objects/$path
536 )
537 }
538
539 test_expect_success 'fsck notices missing blob' '
540 create_repo_missing HEAD:subdir/file &&
541 test_must_fail git -C missing fsck
542 '
543
544 test_expect_success 'fsck notices missing subtree' '
545 create_repo_missing HEAD:subdir &&
546 test_must_fail git -C missing fsck
547 '
548
549 test_expect_success 'fsck notices missing root tree' '
550 create_repo_missing HEAD^{tree} &&
551 test_must_fail git -C missing fsck
552 '
553
554 test_expect_success 'fsck notices missing parent' '
555 create_repo_missing HEAD^ &&
556 test_must_fail git -C missing fsck
557 '
558
559 test_expect_success 'fsck notices missing tagged object' '
560 create_repo_missing tag^{blob} &&
561 test_must_fail git -C missing fsck
562 '
563
564 test_expect_success 'fsck notices ref pointing to missing commit' '
565 create_repo_missing HEAD &&
566 test_must_fail git -C missing fsck
567 '
568
569 test_expect_success 'fsck notices ref pointing to missing tag' '
570 create_repo_missing tag &&
571 test_must_fail git -C missing fsck
572 '
573
574 test_expect_success 'fsck --connectivity-only' '
575 rm -rf connectivity-only &&
576 git init connectivity-only &&
577 (
578 cd connectivity-only &&
579 touch empty &&
580 git add empty &&
581 test_commit empty &&
582
583 # Drop the index now; we want to be sure that we
584 # recursively notice the broken objects
585 # because they are reachable from refs, not because
586 # they are in the index.
587 rm -f .git/index &&
588
589 # corrupt the blob, but in a way that we can still identify
590 # its type. That lets us see that --connectivity-only is
591 # not actually looking at the contents, but leaves it
592 # free to examine the type if it chooses.
593 empty=.git/objects/e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391 &&
594 blob=$(echo unrelated | git hash-object -w --stdin) &&
595 mv -f $(sha1_file $blob) $empty &&
596
597 test_must_fail git fsck --strict &&
598 git fsck --strict --connectivity-only &&
599 tree=$(git rev-parse HEAD:) &&
600 suffix=${tree#??} &&
601 tree=.git/objects/${tree%$suffix}/$suffix &&
602 rm -f $tree &&
603 echo invalid >$tree &&
604 test_must_fail git fsck --strict --connectivity-only
605 )
606 '
607
608 test_expect_success 'fsck --connectivity-only with explicit head' '
609 rm -rf connectivity-only &&
610 git init connectivity-only &&
611 (
612 cd connectivity-only &&
613 test_commit foo &&
614 rm -f .git/index &&
615 tree=$(git rev-parse HEAD^{tree}) &&
616 remove_object $(git rev-parse HEAD:foo.t) &&
617 test_must_fail git fsck --connectivity-only $tree
618 )
619 '
620
621 test_expect_success 'fsck --name-objects' '
622 rm -rf name-objects &&
623 git init name-objects &&
624 (
625 cd name-objects &&
626 test_commit julius caesar.t &&
627 test_commit augustus &&
628 test_commit caesar &&
629 remove_object $(git rev-parse julius:caesar.t) &&
630 test_must_fail git fsck --name-objects >out &&
631 tree=$(git rev-parse --verify julius:) &&
632 egrep "$tree \((refs/heads/master|HEAD)@\{[0-9]*\}:" out
633 )
634 '
635
636 test_expect_success 'alternate objects are correctly blamed' '
637 test_when_finished "rm -rf alt.git .git/objects/info/alternates" &&
638 git init --bare alt.git &&
639 echo "../../alt.git/objects" >.git/objects/info/alternates &&
640 mkdir alt.git/objects/12 &&
641 >alt.git/objects/12/34567890123456789012345678901234567890 &&
642 test_must_fail git fsck >out 2>&1 &&
643 grep alt.git out
644 '
645
646 test_expect_success 'fsck errors in packed objects' '
647 git cat-file commit HEAD >basis &&
648 sed "s/</one/" basis >one &&
649 sed "s/</foo/" basis >two &&
650 one=$(git hash-object -t commit -w one) &&
651 two=$(git hash-object -t commit -w two) &&
652 pack=$(
653 {
654 echo $one &&
655 echo $two
656 } | git pack-objects .git/objects/pack/pack
657 ) &&
658 test_when_finished "rm -f .git/objects/pack/pack-$pack.*" &&
659 remove_object $one &&
660 remove_object $two &&
661 test_must_fail git fsck 2>out &&
662 grep "error in commit $one.* - bad name" out &&
663 grep "error in commit $two.* - bad name" out &&
664 ! grep corrupt out
665 '
666
667 test_expect_success 'fsck fails on corrupt packfile' '
668 hsh=$(git commit-tree -m mycommit HEAD^{tree}) &&
669 pack=$(echo $hsh | git pack-objects .git/objects/pack/pack) &&
670
671 # Corrupt the first byte of the first object. (It contains 3 type bits,
672 # at least one of which is not zero, so setting the first byte to 0 is
673 # sufficient.)
674 chmod a+w .git/objects/pack/pack-$pack.pack &&
675 printf '\0' | dd of=.git/objects/pack/pack-$pack.pack bs=1 conv=notrunc seek=12 &&
676
677 test_when_finished "rm -f .git/objects/pack/pack-$pack.*" &&
678 remove_object $hsh &&
679 test_must_fail git fsck 2>out &&
680 test_i18ngrep "checksum mismatch" out
681 '
682
683 test_expect_success 'fsck finds problems in duplicate loose objects' '
684 rm -rf broken-duplicate &&
685 git init broken-duplicate &&
686 (
687 cd broken-duplicate &&
688 test_commit duplicate &&
689 # no "-d" here, so we end up with duplicates
690 git repack &&
691 # now corrupt the loose copy
692 file=$(sha1_file "$(git rev-parse HEAD)") &&
693 rm "$file" &&
694 echo broken >"$file" &&
695 test_must_fail git fsck
696 )
697 '
698
699 test_expect_success 'fsck detects trailing loose garbage (commit)' '
700 git cat-file commit HEAD >basis &&
701 echo bump-commit-sha1 >>basis &&
702 commit=$(git hash-object -w -t commit basis) &&
703 file=$(sha1_file $commit) &&
704 test_when_finished "remove_object $commit" &&
705 chmod +w "$file" &&
706 echo garbage >>"$file" &&
707 test_must_fail git fsck 2>out &&
708 test_i18ngrep "garbage.*$commit" out
709 '
710
711 test_expect_success 'fsck detects trailing loose garbage (large blob)' '
712 blob=$(echo trailing | git hash-object -w --stdin) &&
713 file=$(sha1_file $blob) &&
714 test_when_finished "remove_object $blob" &&
715 chmod +w "$file" &&
716 echo garbage >>"$file" &&
717 test_must_fail git -c core.bigfilethreshold=5 fsck 2>out &&
718 test_i18ngrep "garbage.*$blob" out
719 '
720
721 test_expect_success 'fsck detects truncated loose object' '
722 # make it big enough that we know we will truncate in the data
723 # portion, not the header
724 test-tool genrandom truncate 4096 >file &&
725 blob=$(git hash-object -w file) &&
726 file=$(sha1_file $blob) &&
727 test_when_finished "remove_object $blob" &&
728 test_copy_bytes 1024 <"$file" >tmp &&
729 rm "$file" &&
730 mv -f tmp "$file" &&
731
732 # check both regular and streaming code paths
733 test_must_fail git fsck 2>out &&
734 test_i18ngrep corrupt.*$blob out &&
735
736 test_must_fail git -c core.bigfilethreshold=128 fsck 2>out &&
737 test_i18ngrep corrupt.*$blob out
738 '
739
740 # for each of type, we have one version which is referenced by another object
741 # (and so while unreachable, not dangling), and another variant which really is
742 # dangling.
743 test_expect_success 'fsck notices dangling objects' '
744 git init dangling &&
745 (
746 cd dangling &&
747 blob=$(echo not-dangling | git hash-object -w --stdin) &&
748 dblob=$(echo dangling | git hash-object -w --stdin) &&
749 tree=$(printf "100644 blob %s\t%s\n" $blob one | git mktree) &&
750 dtree=$(printf "100644 blob %s\t%s\n" $blob two | git mktree) &&
751 commit=$(git commit-tree $tree) &&
752 dcommit=$(git commit-tree -p $commit $tree) &&
753
754 cat >expect <<-EOF &&
755 dangling blob $dblob
756 dangling commit $dcommit
757 dangling tree $dtree
758 EOF
759
760 git fsck >actual &&
761 # the output order is non-deterministic, as it comes from a hash
762 sort <actual >actual.sorted &&
763 test_cmp expect actual.sorted
764 )
765 '
766
767 test_expect_success 'fsck $name notices bogus $name' '
768 test_must_fail git fsck bogus &&
769 test_must_fail git fsck $ZERO_OID
770 '
771
772 test_expect_success 'bogus head does not fallback to all heads' '
773 # set up a case that will cause a reachability complaint
774 echo to-be-deleted >foo &&
775 git add foo &&
776 blob=$(git rev-parse :foo) &&
777 test_when_finished "git rm --cached foo" &&
778 remove_object $blob &&
779 test_must_fail git fsck $ZERO_OID >out 2>&1 &&
780 ! grep $blob out
781 '
782
783 # Corrupt the checksum on the index.
784 # Add 1 to the last byte in the SHA.
785 corrupt_index_checksum () {
786 perl -w -e '
787 use Fcntl ":seek";
788 open my $fh, "+<", ".git/index" or die "open: $!";
789 binmode $fh;
790 seek $fh, -1, SEEK_END or die "seek: $!";
791 read $fh, my $in_byte, 1 or die "read: $!";
792
793 $in_value = unpack("C", $in_byte);
794 $out_value = ($in_value + 1) & 255;
795
796 $out_byte = pack("C", $out_value);
797
798 seek $fh, -1, SEEK_END or die "seek: $!";
799 print $fh $out_byte;
800 close $fh or die "close: $!";
801 '
802 }
803
804 # Corrupt the checksum on the index and then
805 # verify that only fsck notices.
806 test_expect_success 'detect corrupt index file in fsck' '
807 cp .git/index .git/index.backup &&
808 test_when_finished "mv .git/index.backup .git/index" &&
809 corrupt_index_checksum &&
810 test_must_fail git fsck --cache 2>errors &&
811 grep "bad index file" errors
812 '
813
814 test_done