#!/bin/sh
test_description='git fsck random collection of tests
* (HEAD) B
* (main) A
'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success setup '
git config gc.auto 0 &&
git config i18n.commitencoding ISO-8859-1 &&
test_commit A fileA one &&
git config --unset i18n.commitencoding &&
git checkout HEAD^0 &&
test_commit B fileB two &&
orig_head=$(git rev-parse HEAD) &&
git tag -d A B &&
git reflog expire --expire=now --all
'
test_expect_success 'loose objects borrowed from alternate are not missing' '
mkdir another &&
(
cd another &&
git init &&
echo ../../../.git/objects >.git/objects/info/alternates &&
test_commit C fileC one &&
git fsck --no-dangling >../actual 2>&1
) &&
test_must_be_empty actual
'
test_expect_success 'HEAD is part of refs, valid objects appear valid' '
git fsck >actual 2>&1 &&
test_must_be_empty actual
'
# Corruption tests follow. Make sure to remove all traces of the
# specific corruption you test afterwards, lest a later test trip over
# it.
sha1_file () {
git rev-parse --git-path objects/$(test_oid_to_path "$1")
}
remove_object () {
rm "$(sha1_file "$1")"
}
test_expect_success 'object with hash mismatch' '
git init --bare hash-mismatch &&
(
cd hash-mismatch &&
oid=$(echo blob | git hash-object -w --stdin) &&
oldoid=$oid &&
old=$(test_oid_to_path "$oid") &&
new=$(dirname $old)/$(test_oid ff_2) &&
oid="$(dirname $new)$(basename $new)" &&
mv objects/$old objects/$new &&
git update-index --add --cacheinfo 100644 $oid foo &&
tree=$(git write-tree) &&
cmt=$(echo bogus | git commit-tree $tree) &&
git update-ref refs/heads/bogus $cmt &&
test_must_fail git fsck 2>out &&
grep "$oldoid: hash-path mismatch, found at: .*$new" out
)
'
test_expect_success 'object with hash and type mismatch' '
git init --bare hash-type-mismatch &&
(
cd hash-type-mismatch &&
oid=$(echo blob | git hash-object -w --stdin -t garbage --literally) &&
oldoid=$oid &&
old=$(test_oid_to_path "$oid") &&
new=$(dirname $old)/$(test_oid ff_2) &&
oid="$(dirname $new)$(basename $new)" &&
mv objects/$old objects/$new &&
git update-index --add --cacheinfo 100644 $oid foo &&
tree=$(git write-tree) &&
cmt=$(echo bogus | git commit-tree $tree) &&
git update-ref refs/heads/bogus $cmt &&
test_must_fail git fsck 2>out &&
grep "^error: $oldoid: hash-path mismatch, found at: .*$new" out &&
grep "^error: $oldoid: object is of unknown type '"'"'garbage'"'"'" out
)
'
test_expect_success 'zlib corrupt loose object output ' '
git init --bare corrupt-loose-output &&
(
cd corrupt-loose-output &&
oid=$(git hash-object -w --stdin --literally </dev/null) &&
oidf=objects/$(test_oid_to_path "$oid") &&
chmod +w $oidf &&
echo extra garbage >>$oidf &&
cat >expect.error <<-EOF &&
error: garbage at end of loose object '\''$oid'\''
error: unable to unpack contents of ./$oidf
error: $oid: object corrupt or missing: ./$oidf
EOF
test_must_fail git fsck 2>actual &&
grep ^error: actual >error &&
test_cmp expect.error error
)
'
test_expect_success 'branch pointing to non-commit' '
tree_oid=$(git rev-parse --verify HEAD^{tree}) &&
test_when_finished "git update-ref -d refs/heads/invalid" &&
test-tool ref-store main update-ref msg refs/heads/invalid $tree_oid $ZERO_OID REF_SKIP_OID_VERIFICATION &&
test_must_fail git fsck 2>out &&
test_grep "not a commit" out
'
test_expect_success REFFILES 'HEAD link pointing at a funny object' '
test_when_finished "git update-ref HEAD $orig_head" &&
echo $ZERO_OID >.git/HEAD &&
# avoid corrupt/broken HEAD from interfering with repo discovery
test_must_fail env GIT_DIR=.git git fsck 2>out &&
test_grep "detached HEAD points" out
'
test_expect_success 'HEAD link pointing at a funny place' '
test_when_finished "git update-ref --no-deref HEAD $orig_head" &&
test-tool ref-store main create-symref HEAD refs/funny/place &&
# avoid corrupt/broken HEAD from interfering with repo discovery
test_must_fail env GIT_DIR=.git git fsck 2>out &&
test_grep "HEAD points to something strange" out
'
test_expect_success REFFILES 'HEAD link pointing at a funny object (from different wt)' '
test_when_finished "git update-ref HEAD $orig_head" &&
test_when_finished "git worktree remove -f wt" &&
git worktree add wt &&
echo $ZERO_OID >.git/HEAD &&
# avoid corrupt/broken HEAD from interfering with repo discovery
test_must_fail git -C wt fsck 2>out &&
test_grep "main-worktree/HEAD: detached HEAD points" out
'
test_expect_success REFFILES 'other worktree HEAD link pointing at a funny object' '
test_when_finished "git worktree remove -f other" &&
git worktree add other &&
echo $ZERO_OID >.git/worktrees/other/HEAD &&
test_must_fail git fsck 2>out &&
test_grep "worktrees/other/HEAD: detached HEAD points" out
'
test_expect_success 'other worktree HEAD link pointing at missing object' '
test_when_finished "git worktree remove -f other" &&
git worktree add other &&
object_id=$(echo "Contents missing from repo" | git hash-object --stdin) &&
test-tool -C other ref-store main update-ref msg HEAD $object_id "" REF_NO_DEREF,REF_SKIP_OID_VERIFICATION &&
test_must_fail git fsck 2>out &&
test_grep "worktrees/other/HEAD: invalid sha1 pointer" out
'
test_expect_success 'other worktree HEAD link pointing at a funny place' '
test_when_finished "git worktree remove -f other" &&
git worktree add other &&
git -C other symbolic-ref HEAD refs/funny/place &&
test_must_fail git fsck 2>out &&
test_grep "worktrees/other/HEAD points to something strange" out
'
test_expect_success 'commit with multiple signatures is okay' '
git cat-file commit HEAD >basis &&
cat >sigs <<-EOF &&
gpgsig -----BEGIN PGP SIGNATURE-----
VGhpcyBpcyBub3QgcmVhbGx5IGEgc2lnbmF0dXJlLg==
-----END PGP SIGNATURE-----
gpgsig-sha256 -----BEGIN PGP SIGNATURE-----
VGhpcyBpcyBub3QgcmVhbGx5IGEgc2lnbmF0dXJlLg==
-----END PGP SIGNATURE-----
EOF
sed -e "/^committer/q" basis >okay &&
cat sigs >>okay &&
echo >>okay &&
sed -e "1,/^$/d" basis >>okay &&
cat okay &&
new=$(git hash-object -t commit -w --stdin <okay) &&
test_when_finished "remove_object $new" &&
git update-ref refs/heads/bogus "$new" &&
test_when_finished "git update-ref -d refs/heads/bogus" &&
git fsck 2>out &&
cat out &&
! grep "commit $new" out
'
test_expect_success 'email without @ is okay' '
git cat-file commit HEAD >basis &&
sed "s/@/AT/" basis >okay &&
new=$(git hash-object -t commit -w --stdin <okay) &&
test_when_finished "remove_object $new" &&
git update-ref refs/heads/bogus "$new" &&
test_when_finished "git update-ref -d refs/heads/bogus" &&
git fsck 2>out &&
! grep "commit $new" out
'
test_expect_success 'email with embedded > is not okay' '
git cat-file commit HEAD >basis &&
sed "s/@[a-z]/&>/" basis >bad-email &&
new=$(git hash-object --literally -t commit -w --stdin <bad-email) &&
test_when_finished "remove_object $new" &&
git update-ref refs/heads/bogus "$new" &&
test_when_finished "git update-ref -d refs/heads/bogus" &&
test_must_fail git fsck 2>out &&
test_grep "error in commit $new" out
'
test_expect_success 'missing < email delimiter is reported nicely' '
git cat-file commit HEAD >basis &&
sed "s/<//" basis >bad-email-2 &&
new=$(git hash-object --literally -t commit -w --stdin <bad-email-2) &&
test_when_finished "remove_object $new" &&
git update-ref refs/heads/bogus "$new" &&
test_when_finished "git update-ref -d refs/heads/bogus" &&
test_must_fail git fsck 2>out &&
test_grep "error in commit $new.* - bad name" out
'
test_expect_success 'missing email is reported nicely' '
git cat-file commit HEAD >basis &&
sed "s/[a-z]* <[^>]*>//" basis >bad-email-3 &&
new=$(git hash-object --literally -t commit -w --stdin <bad-email-3) &&
test_when_finished "remove_object $new" &&
git update-ref refs/heads/bogus "$new" &&
test_when_finished "git update-ref -d refs/heads/bogus" &&
test_must_fail git fsck 2>out &&
test_grep "error in commit $new.* - missing email" out
'
test_expect_success '> in name is reported' '
git cat-file commit HEAD >basis &&
sed "s/ </> </" basis >bad-email-4 &&
new=$(git hash-object --literally -t commit -w --stdin <bad-email-4) &&
test_when_finished "remove_object $new" &&
git update-ref refs/heads/bogus "$new" &&
test_when_finished "git update-ref -d refs/heads/bogus" &&
test_must_fail git fsck 2>out &&
test_grep "error in commit $new" out
'
# date is 2^64 + 1
test_expect_success 'integer overflow in timestamps is reported' '
git cat-file commit HEAD >basis &&
sed "s/^\\(author .*>\\) [0-9]*/\\1 18446744073709551617/" \
<basis >bad-timestamp &&
new=$(git hash-object --literally -t commit -w --stdin <bad-timestamp) &&
test_when_finished "remove_object $new" &&
git update-ref refs/heads/bogus "$new" &&
test_when_finished "git update-ref -d refs/heads/bogus" &&
test_must_fail git fsck 2>out &&
test_grep "error in commit $new.*integer overflow" out
'
test_expect_success 'commit with NUL in header' '
git cat-file commit HEAD >basis &&
sed "s/author ./author Q/" <basis | q_to_nul >commit-NUL-header &&
new=$(git hash-object --literally -t commit -w --stdin <commit-NUL-header) &&
test_when_finished "remove_object $new" &&
git update-ref refs/heads/bogus "$new" &&
test_when_finished "git update-ref -d refs/heads/bogus" &&
test_must_fail git fsck 2>out &&
test_grep "error in commit $new.*unterminated header: NUL at offset" out
'
test_expect_success 'tree object with duplicate entries' '
test_when_finished "for i in \$T; do remove_object \$i; done" &&
T=$(
GIT_INDEX_FILE=test-index &&
export GIT_INDEX_FILE &&
rm -f test-index &&
>x &&
git add x &&
git rev-parse :x &&
T=$(git write-tree) &&
echo $T &&
(
git cat-file tree $T &&
git cat-file tree $T
) |
git hash-object --literally -w -t tree --stdin
) &&
test_must_fail git fsck 2>out &&
test_grep "error in tree .*contains duplicate file entries" out
'
check_duplicate_names () {
expect=$1 &&
shift &&
names=$@ &&
test_expect_$expect "tree object with duplicate names: $names" '
test_when_finished "remove_object \$blob" &&
test_when_finished "remove_object \$tree" &&
test_when_finished "remove_object \$badtree" &&
blob=$(echo blob | git hash-object -w --stdin) &&
printf "100644 blob %s\t%s\n" $blob x.2 >tree &&
tree=$(git mktree <tree) &&
for name in $names
do
case "$name" in
*/) printf "040000 tree %s\t%s\n" $tree "${name%/}" ;;
*) printf "100644 blob %s\t%s\n" $blob "$name" ;;
esac
done >badtree &&
badtree=$(git mktree <badtree) &&
test_must_fail git fsck 2>out &&
test_grep "$badtree" out &&
test_grep "error in tree .*contains duplicate file entries" out
'
}
check_duplicate_names success x x.1 x/
check_duplicate_names success x x.1.2 x.1/ x/
check_duplicate_names success x x.1 x.1.2 x/
test_expect_success 'unparseable tree object' '
test_oid_cache <<-\EOF &&
junk sha1:twenty-bytes-of-junk
junk sha256:twenty-bytes-of-junk-twelve-more
EOF
test_when_finished "git update-ref -d refs/heads/wrong" &&
test_when_finished "remove_object \$tree_sha1" &&
test_when_finished "remove_object \$commit_sha1" &&
junk=$(test_oid junk) &&
tree_sha1=$(printf "100644 \0$junk" | git hash-object -t tree --stdin -w --literally) &&
commit_sha1=$(git commit-tree $tree_sha1) &&
git update-ref refs/heads/wrong $commit_sha1 &&
test_must_fail git fsck 2>out &&
test_grep "error: empty filename in tree entry" out &&
test_grep "$tree_sha1" out &&
test_grep ! "fatal: empty filename in tree entry" out
'
test_expect_success 'tree entry with type mismatch' '
test_when_finished "remove_object \$blob" &&
test_when_finished "remove_object \$tree" &&
test_when_finished "remove_object \$commit" &&
test_when_finished "git update-ref -d refs/heads/type_mismatch" &&
blob=$(echo blob | git hash-object -w --stdin) &&
blob_bin=$(echo $blob | hex2oct) &&
tree=$(
printf "40000 dir\0${blob_bin}100644 file\0${blob_bin}" |
git hash-object -t tree --stdin -w --literally
) &&
commit=$(git commit-tree $tree) &&
git update-ref refs/heads/type_mismatch $commit &&
test_must_fail git fsck >out 2>&1 &&
test_grep "is a blob, not a tree" out &&
test_grep ! "dangling blob" out
'
test_expect_success 'tree entry with bogus mode' '
test_when_finished "remove_object \$blob" &&
test_when_finished "remove_object \$tree" &&
blob=$(echo blob | git hash-object -w --stdin) &&
blob_oct=$(echo $blob | hex2oct) &&
tree=$(printf "100000 foo\0${blob_oct}" |
git hash-object -t tree --stdin -w --literally) &&
git fsck 2>err &&
cat >expect <<-EOF &&
warning in tree $tree: badFilemode: contains bad file modes
EOF
test_cmp expect err
'
test_expect_success 'tag pointing to nonexistent' '
badoid=$(test_oid deadbeef) &&
cat >invalid-tag <<-EOF &&
object $badoid
type commit
tag invalid
tagger T A Gger <[email protected]> 1234567890 -0000
This is an invalid tag.
EOF
tag=$(git hash-object -t tag -w --stdin <invalid-tag) &&
test_when_finished "remove_object $tag" &&
git update-ref refs/tags/invalid $tag &&
test_when_finished "git update-ref -d refs/tags/invalid" &&
test_must_fail git fsck --tags >out &&
test_grep "broken link" out
'
test_expect_success 'tag pointing to something else than its type' '
sha=$(echo blob | git hash-object -w --stdin) &&
test_when_finished "remove_object $sha" &&
cat >wrong-tag <<-EOF &&
object $sha
type commit
tag wrong
tagger T A Gger <[email protected]> 1234567890 -0000
This is an invalid tag.
EOF
tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
test_when_finished "remove_object $tag" &&
git update-ref refs/tags/wrong $tag &&
test_when_finished "git update-ref -d refs/tags/wrong" &&
test_must_fail git fsck --tags
'
test_expect_success 'tag with incorrect tag name & missing tagger' '
sha=$(git rev-parse HEAD) &&
cat >wrong-tag <<-EOF &&
object $sha
type commit
tag wrong name format
This is an invalid tag.
EOF
tag=$(git hash-object --literally -t tag -w --stdin <wrong-tag) &&
test_when_finished "remove_object $tag" &&
git update-ref refs/tags/wrong $tag &&
test_when_finished "git update-ref -d refs/tags/wrong" &&
git fsck --tags 2>out &&
cat >expect <<-EOF &&
warning in tag $tag: badTagName: invalid '\''tag'\'' name: wrong name format
warning in tag $tag: missingTaggerEntry: invalid format - expected '\''tagger'\'' line
EOF
test_cmp expect out
'
test_expect_success 'tag with bad tagger' '
sha=$(git rev-parse HEAD) &&
cat >wrong-tag <<-EOF &&
object $sha
type commit
tag not-quite-wrong
tagger Bad Tagger Name
This is an invalid tag.
EOF
tag=$(git hash-object --literally -t tag -w --stdin <wrong-tag) &&
test_when_finished "remove_object $tag" &&
git update-ref refs/tags/wrong $tag &&
test_when_finished "git update-ref -d refs/tags/wrong" &&
test_must_fail git fsck --tags 2>out &&
test_grep "error in tag .*: invalid author/committer" out
'
test_expect_success 'tag with NUL in header' '
sha=$(git rev-parse HEAD) &&
q_to_nul >tag-NUL-header <<-EOF &&
object $sha
type commit
tag contains-Q-in-header
tagger T A Gger <[email protected]> 1234567890 -0000
This is an invalid tag.
EOF
tag=$(git hash-object --literally -t tag -w --stdin <tag-NUL-header) &&
test_when_finished "remove_object $tag" &&
git update-ref refs/tags/wrong $tag &&
test_when_finished "git update-ref -d refs/tags/wrong" &&
test_must_fail git fsck --tags 2>out &&
test_grep "error in tag $tag.*unterminated header: NUL at offset" out
'
test_expect_success 'cleaned up' '
git fsck >actual 2>&1 &&
test_must_be_empty actual
'
test_expect_success 'rev-list --verify-objects' '
git rev-list --verify-objects --all >/dev/null 2>out &&
test_must_be_empty out
'
test_expect_success 'rev-list --verify-objects with bad sha1' '
sha=$(echo blob | git hash-object -w --stdin) &&
old=$(test_oid_to_path $sha) &&
new=$(dirname $old)/$(test_oid ff_2) &&
sha="$(dirname $new)$(basename $new)" &&
mv .git/objects/$old .git/objects/$new &&
test_when_finished "remove_object $sha" &&
git update-index --add --cacheinfo 100644 $sha foo &&
test_when_finished "git read-tree -u --reset HEAD" &&
tree=$(git write-tree) &&
test_when_finished "remove_object $tree" &&
cmt=$(echo bogus | git commit-tree $tree) &&
test_when_finished "remove_object $cmt" &&
git update-ref refs/heads/bogus $cmt &&
test_when_finished "git update-ref -d refs/heads/bogus" &&
test_might_fail git rev-list --verify-objects refs/heads/bogus >/dev/null 2>out &&
test_grep -q "error: hash mismatch $(dirname $new)$(test_oid ff_2)" out
'
# An actual bit corruption is more likely than swapped commits, but
# this provides an easy way to have commits which don't match their purported
# hashes, but which aren't so broken we can't read them at all.
test_expect_success 'rev-list --verify-objects notices swapped commits' '
git init swapped-commits &&
(
cd swapped-commits &&
test_commit one &&
test_commit two &&
one_oid=$(git rev-parse HEAD) &&
two_oid=$(git rev-parse HEAD^) &&
one=.git/objects/$(test_oid_to_path $one_oid) &&
two=.git/objects/$(test_oid_to_path $two_oid) &&
mv $one tmp &&
mv $two $one &&
mv tmp $two &&
test_must_fail git rev-list --verify-objects HEAD
)
'
test_expect_success 'set up repository with commit-graph' '
git init corrupt-graph &&
(
cd corrupt-graph &&
test_commit one &&
test_commit two &&
git commit-graph write --reachable
)
'
corrupt_graph_obj () {
oid=$(git -C corrupt-graph rev-parse "$1") &&
obj=corrupt-graph/.git/objects/$(test_oid_to_path $oid) &&
test_when_finished 'mv backup $obj' &&
mv $obj backup &&
echo garbage >$obj
}
test_expect_success 'rev-list --verify-objects with commit graph (tip)' '
corrupt_graph_obj HEAD &&
test_must_fail git -C corrupt-graph rev-list --verify-objects HEAD
'
test_expect_success 'rev-list --verify-objects with commit graph (parent)' '
corrupt_graph_obj HEAD^ &&
test_must_fail git -C corrupt-graph rev-list --verify-objects HEAD
'
test_expect_success 'force fsck to ignore double author' '
git cat-file commit HEAD >basis &&
sed "s/^author .*/&,&/" <basis | tr , \\n >multiple-authors &&
new=$(git hash-object --literally -t commit -w --stdin <multiple-authors) &&
test_when_finished "remove_object $new" &&
git update-ref refs/heads/bogus "$new" &&
test_when_finished "git update-ref -d refs/heads/bogus" &&
test_must_fail git fsck &&
git -c fsck.multipleAuthors=ignore fsck
'
_bz='\0'
_bzoid=$(printf $ZERO_OID | sed -e 's/00/\\0/g')
test_expect_success 'fsck notices blob entry pointing to null sha1' '
(git init null-blob &&
cd null-blob &&
sha=$(printf "100644 file$_bz$_bzoid" |
git hash-object --literally -w --stdin -t tree) &&
git fsck 2>out &&
test_grep "warning.*null sha1" out
)
'
test_expect_success 'fsck notices submodule entry pointing to null sha1' '
(git init null-commit &&
cd null-commit &&
sha=$(printf "160000 submodule$_bz$_bzoid" |
git hash-object --literally -w --stdin -t tree) &&
git fsck 2>out &&
test_grep "warning.*null sha1" out
)
'
test_expect_success 'fsck notices excessively large tree entry name' '
git init large-name &&
(
cd large-name &&
test_commit a-long-name &&
git -c fsck.largePathname=warn:10 fsck 2>out &&
grep "warning.*large pathname" out
)
'
while read name path pretty; do
while read mode type; do
: ${pretty:=$path}
test_expect_success "fsck notices $pretty as $type" '
(
git init $name-$type &&
cd $name-$type &&
git config core.protectNTFS false &&
echo content >file &&
git add file &&
git commit -m base &&
blob=$(git rev-parse :file) &&
tree=$(git rev-parse HEAD^{tree}) &&
value=$(eval "echo \$$type") &&
printf "$mode $type %s\t%s" "$value" "$path" >bad &&
bad_tree=$(git mktree <bad) &&
git fsck 2>out &&
test_grep "warning.*tree $bad_tree" out
)'
done <<-\EOF
100644 blob
040000 tree
EOF
done <<-EOF
dot .
dotdot ..
dotgit .git
dotgit-case .GIT
dotgit-unicode .gI${u200c}T .gI{u200c}T
dotgit-case2 .Git
git-tilde1 git~1
dotgitdot .git.
dot-backslash-case .\\\\.GIT\\\\foobar
dotgit-case-backslash .git\\\\foobar
EOF
test_expect_success 'fsck allows .Ňit' '
(
git init not-dotgit &&
cd not-dotgit &&
echo content >file &&
git add file &&
git commit -m base &&
blob=$(git rev-parse :file) &&
printf "100644 blob $blob\t.\\305\\207it" >tree &&
tree=$(git mktree <tree) &&
git fsck 2>err &&
test_line_count = 0 err
)
'
test_expect_success 'NUL in commit' '
rm -fr nul-in-commit &&
git init nul-in-commit &&
(
cd nul-in-commit &&
git commit --allow-empty -m "initial commitQNUL after message" &&
git cat-file commit HEAD >original &&
q_to_nul <original >munged &&
git hash-object --literally -w -t commit --stdin <munged >name &&
git branch bad $(cat name) &&
test_must_fail git -c fsck.nulInCommit=error fsck 2>warn.1 &&
test_grep nulInCommit warn.1 &&
git fsck 2>warn.2 &&
test_grep nulInCommit warn.2
)
'
# create a static test repo which is broken by omitting
# one particular object ($1, which is looked up via rev-parse
# in the new repository).
create_repo_missing () {
rm -rf missing &&
git init missing &&
(
cd missing &&
git commit -m one --allow-empty &&
mkdir subdir &&
echo content >subdir/file &&
git add subdir/file &&
git commit -m two &&
unrelated=$(echo unrelated | git hash-object --stdin -w) &&
git tag -m foo tag $unrelated &&
sha1=$(git rev-parse --verify "$1") &&
path=$(echo $sha1 | sed 's|..|&/|') &&
rm .git/objects/$path
)
}
test_expect_success 'fsck notices missing blob' '
create_repo_missing HEAD:subdir/file &&
test_must_fail git -C missing fsck
'
test_expect_success 'fsck notices missing subtree' '
create_repo_missing HEAD:subdir &&
test_must_fail git -C missing fsck
'
test_expect_success 'fsck notices missing root tree' '
create_repo_missing HEAD^{tree} &&
test_must_fail git -C missing fsck
'
test_expect_success 'fsck notices missing parent' '
create_repo_missing HEAD^ &&
test_must_fail git -C missing fsck
'
test_expect_success 'fsck notices missing tagged object' '
create_repo_missing tag^{blob} &&
test_must_fail git -C missing fsck
'
test_expect_success 'fsck notices ref pointing to missing commit' '
create_repo_missing HEAD &&
test_must_fail git -C missing fsck
'
test_expect_success 'fsck notices ref pointing to missing tag' '
create_repo_missing tag &&
test_must_fail git -C missing fsck
'
test_expect_success 'fsck --connectivity-only' '
rm -rf connectivity-only &&
git init connectivity-only &&
(
cd connectivity-only &&
touch empty &&
git add empty &&
test_commit empty &&
# Drop the index now; we want to be sure that we
# recursively notice the broken objects
# because they are reachable from refs, not because
# they are in the index.
rm -f .git/index &&
# corrupt the blob, but in a way that we can still identify
# its type. That lets us see that --connectivity-only is
# not actually looking at the contents, but leaves it
# free to examine the type if it chooses.
empty=.git/objects/$(test_oid_to_path $EMPTY_BLOB) &&
blob=$(echo unrelated | git hash-object -w --stdin) &&
mv -f $(sha1_file $blob) $empty &&
test_must_fail git fsck --strict &&
git fsck --strict --connectivity-only &&
tree=$(git rev-parse HEAD:) &&
suffix=${tree#??} &&
tree=.git/objects/${tree%$suffix}/$suffix &&
rm -f $tree &&
echo invalid >$tree &&
test_must_fail git fsck --strict --connectivity-only
)
'
test_expect_success 'fsck --connectivity-only with explicit head' '
rm -rf connectivity-only &&
git init connectivity-only &&
(
cd connectivity-only &&
test_commit foo &&
rm -f .git/index &&
tree=$(git rev-parse HEAD^{tree}) &&
remove_object $(git rev-parse HEAD:foo.t) &&
test_must_fail git fsck --connectivity-only $tree
)
'
test_expect_success 'fsck --name-objects' '
rm -rf name-objects &&
git init name-objects &&
(
cd name-objects &&
git config core.logAllRefUpdates false &&
test_commit julius caesar.t &&
test_commit augustus44 &&
test_commit caesar &&
remove_object $(git rev-parse julius:caesar.t) &&
tree=$(git rev-parse --verify julius:) &&
git tag -d julius &&
test_must_fail git fsck --name-objects >out &&
test_grep "$tree (refs/tags/augustus44\\^:" out
)
'
test_expect_success 'alternate objects are correctly blamed' '
test_when_finished "rm -rf alt.git .git/objects/info/alternates" &&
name=$(test_oid numeric) &&
path=$(test_oid_to_path "$name") &&
git init --bare alt.git &&
echo "../../alt.git/objects" >.git/objects/info/alternates &&
mkdir alt.git/objects/$(dirname $path) &&
>alt.git/objects/$(dirname $path)/$(basename $path) &&
test_must_fail git fsck >out 2>&1 &&
test_grep alt.git out
'
test_expect_success 'fsck errors in packed objects' '
git cat-file commit HEAD >basis &&
sed "s/</one/" basis >one &&
sed "s/</foo/" basis >two &&
one=$(git hash-object --literally -t commit -w one) &&
two=$(git hash-object --literally -t commit -w two) &&
pack=$(
{
echo $one &&
echo $two
} | git pack-objects .git/objects/pack/pack
) &&
test_when_finished "rm -f .git/objects/pack/pack-$pack.*" &&
remove_object $one &&
remove_object $two &&
test_must_fail git fsck 2>out &&
test_grep "error in commit $one.* - bad name" out &&
test_grep "error in commit $two.* - bad name" out &&
! grep corrupt out
'
test_expect_success 'fsck fails on corrupt packfile' '
hsh=$(git commit-tree -m mycommit HEAD^{tree}) &&
pack=$(echo $hsh | git pack-objects .git/objects/pack/pack) &&
# Corrupt the first byte of the first object. (It contains 3 type bits,
# at least one of which is not zero, so setting the first byte to 0 is
# sufficient.)
chmod a+w .git/objects/pack/pack-$pack.pack &&
printf "\0" | dd of=.git/objects/pack/pack-$pack.pack bs=1 conv=notrunc seek=12 &&
test_when_finished "rm -f .git/objects/pack/pack-$pack.*" &&
remove_object $hsh &&
test_must_fail git fsck 2>out &&
test_grep "checksum mismatch" out
'
test_expect_success 'fsck finds problems in duplicate loose objects' '
rm -rf broken-duplicate &&
git init broken-duplicate &&
(
cd broken-duplicate &&
test_commit duplicate &&
# no "-d" here, so we end up with duplicates
git repack &&
# now corrupt the loose copy
oid="$(git rev-parse HEAD)" &&
file=$(sha1_file "$oid") &&
rm "$file" &&
echo broken >"$file" &&
test_must_fail git fsck 2>err &&
cat >expect <<-EOF &&
error: inflate: data stream error (incorrect header check)
error: unable to unpack header of $file
error: $oid: object corrupt or missing: $file
EOF
grep "^error: " err >actual &&
test_cmp expect actual
)
'
test_expect_success 'fsck detects trailing loose garbage (commit)' '
git cat-file commit HEAD >basis &&
echo bump-commit-sha1 >>basis &&
commit=$(git hash-object -w -t commit basis) &&
file=$(sha1_file $commit) &&
test_when_finished "remove_object $commit" &&
chmod +w "$file" &&
echo garbage >>"$file" &&
test_must_fail git fsck 2>out &&
test_grep "garbage.*$commit" out
'
test_expect_success 'fsck detects trailing loose garbage (large blob)' '
blob=$(echo trailing | git hash-object -w --stdin) &&
file=$(sha1_file $blob) &&
test_when_finished "remove_object $blob" &&
chmod +w "$file" &&
echo garbage >>"$file" &&
test_must_fail git -c core.bigfilethreshold=5 fsck 2>out &&
test_grep "garbage.*$blob" out
'
test_expect_success 'fsck detects truncated loose object' '
# make it big enough that we know we will truncate in the data
# portion, not the header
test-tool genrandom truncate 4096 >file &&
blob=$(git hash-object -w file) &&
file=$(sha1_file $blob) &&
test_when_finished "remove_object $blob" &&
test_copy_bytes 1024 <"$file" >tmp &&
rm "$file" &&
mv -f tmp "$file" &&
# check both regular and streaming code paths
test_must_fail git fsck 2>out &&
test_grep corrupt.*$blob out &&
test_must_fail git -c core.bigfilethreshold=128 fsck 2>out &&
test_grep corrupt.*$blob out
'
# for each of type, we have one version which is referenced by another object
# (and so while unreachable, not dangling), and another variant which really is
# dangling.
test_expect_success 'create dangling-object repository' '
git init dangling &&
(
cd dangling &&
blob=$(echo not-dangling | git hash-object -w --stdin) &&
dblob=$(echo dangling | git hash-object -w --stdin) &&
tree=$(printf "100644 blob %s\t%s\n" $blob one | git mktree) &&
dtree=$(printf "100644 blob %s\t%s\n" $blob two | git mktree) &&
commit=$(git commit-tree $tree) &&
dcommit=$(git commit-tree -p $commit $tree) &&
cat >expect <<-EOF
dangling blob $dblob
dangling commit $dcommit
dangling tree $dtree
EOF
)
'
test_expect_success 'fsck notices dangling objects' '
(
cd dangling &&
git fsck >actual &&
# the output order is non-deterministic, as it comes from a hash
sort <actual >actual.sorted &&
test_cmp expect actual.sorted
)
'
test_expect_success 'fsck --connectivity-only notices dangling objects' '
(
cd dangling &&
git fsck --connectivity-only >actual &&
# the output order is non-deterministic, as it comes from a hash
sort <actual >actual.sorted &&
test_cmp expect actual.sorted
)
'
test_expect_success 'fsck $name notices bogus $name' '
test_must_fail git fsck bogus &&
test_must_fail git fsck $ZERO_OID
'
test_expect_success 'bogus head does not fallback to all heads' '
# set up a case that will cause a reachability complaint
echo to-be-deleted >foo &&
git add foo &&
blob=$(git rev-parse :foo) &&
test_when_finished "git rm --cached foo" &&
remove_object $blob &&
test_must_fail git fsck $ZERO_OID >out 2>&1 &&
! grep $blob out
'
# Corrupt the checksum on the index.
# Add 1 to the last byte in the SHA.
corrupt_index_checksum () {
perl -w -e '
use Fcntl ":seek";
open my $fh, "+<", ".git/index" or die "open: $!";
binmode $fh;
seek $fh, -1, SEEK_END or die "seek: $!";
read $fh, my $in_byte, 1 or die "read: $!";
$in_value = unpack("C", $in_byte);
$out_value = ($in_value + 1) & 255;
$out_byte = pack("C", $out_value);
seek $fh, -1, SEEK_END or die "seek: $!";
print $fh $out_byte;
close $fh or die "close: $!";
'
}
# Corrupt the checksum on the index and then
# verify that only fsck notices.
test_expect_success 'detect corrupt index file in fsck' '
cp .git/index .git/index.backup &&
test_when_finished "mv .git/index.backup .git/index" &&
corrupt_index_checksum &&
test_must_fail git fsck --cache 2>errors &&
test_grep "bad index file" errors
'
test_expect_success 'fsck error and recovery on invalid object type' '
git init --bare garbage-type &&
(
cd garbage-type &&
garbage_blob=$(git hash-object --stdin -w -t garbage --literally </dev/null) &&
test_must_fail git fsck 2>err &&
grep -e "^error" -e "^fatal" err >errors &&
test_line_count = 1 errors &&
grep "$garbage_blob: object is of unknown type '"'"'garbage'"'"':" err
)
'
test_expect_success 'fsck error on gitattributes with excessive line lengths' '
blob=$(printf "pattern %02048d" 1 | git hash-object -w --stdin) &&
test_when_finished "remove_object $blob" &&
tree=$(printf "100644 blob %s\t%s\n" $blob .gitattributes | git mktree) &&
test_when_finished "remove_object $tree" &&
cat >expected <<-EOF &&
error in blob $blob: gitattributesLineLength: .gitattributes has too long lines to parse
EOF
test_must_fail git fsck --no-dangling >actual 2>&1 &&
test_cmp expected actual
'
test_expect_success 'fsck error on gitattributes with excessive size' '
blob=$(test-tool genzeros $((100 * 1024 * 1024 + 1)) | git hash-object -w --stdin) &&
test_when_finished "remove_object $blob" &&
tree=$(printf "100644 blob %s\t%s\n" $blob .gitattributes | git mktree) &&
test_when_finished "remove_object $tree" &&
cat >expected <<-EOF &&
error in blob $blob: gitattributesLarge: .gitattributes too large to parse
EOF
test_must_fail git fsck --no-dangling >actual 2>&1 &&
test_cmp expected actual
'
test_expect_success 'fsck detects problems in worktree index' '
test_when_finished "git worktree remove -f wt" &&
git worktree add wt &&
echo "this will be removed to break the worktree index" >wt/file &&
git -C wt add file &&
blob=$(git -C wt rev-parse :file) &&
remove_object $blob &&
test_must_fail git fsck --name-objects >actual 2>&1 &&
cat >expect <<-EOF &&
missing blob $blob (.git/worktrees/wt/index:file)
EOF
test_cmp expect actual
'
test_expect_success 'fsck reports problems in current worktree index without filename' '
test_when_finished "rm -f .git/index && git read-tree HEAD" &&
echo "this object will be removed to break current worktree index" >file &&
git add file &&
blob=$(git rev-parse :file) &&
remove_object $blob &&
test_must_fail git fsck --name-objects >actual 2>&1 &&
cat >expect <<-EOF &&
missing blob $blob (:file)
EOF
test_cmp expect actual
'
test_done
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