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t1450-fsck.sh
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#!/bin/sh
test_description='git fsck random collection of tests
* (HEAD) B
* (master) A
'
. ./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 &&
git tag -d A B &&
git reflog expire --expire=now --all &&
>empty
'
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_cmp empty actual
'
test_expect_success 'HEAD is part of refs, valid objects appear valid' '
git fsck >actual 2>&1 &&
test_cmp 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.
test_expect_success 'setup: helpers for corruption tests' '
sha1_file() {
echo "$*" | sed "s#..#.git/objects/&/#"
} &&
remove_object() {
file=$(sha1_file "$*") &&
test -e "$file" &&
rm -f "$file"
}
'
test_expect_success 'object with bad sha1' '
sha=$(echo blob | git hash-object -w --stdin) &&
old=$(echo $sha | sed "s+^..+&/+") &&
new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
sha="$(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 $cmt &&
test_when_finished "git update-ref -d refs/heads/bogus" &&
test_must_fail git fsck 2>out &&
cat out &&
grep "$sha.*corrupt" out
'
test_expect_success 'branch pointing to non-commit' '
git rev-parse HEAD^{tree} >.git/refs/heads/invalid &&
test_when_finished "git update-ref -d refs/heads/invalid" &&
git fsck 2>out &&
cat out &&
grep "not a commit" 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 &&
cat 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 -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 &&
cat out &&
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 -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 &&
cat out &&
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 -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 &&
cat out &&
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 -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 &&
cat out &&
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 -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 &&
cat out &&
grep "error in commit $new.*integer overflow" out
'
test_expect_success 'malformatted tree object' '
test_when_finished "git update-ref -d refs/tags/wrong" &&
test_when_finished "remove_object \$T" &&
T=$(
GIT_INDEX_FILE=test-index &&
export GIT_INDEX_FILE &&
rm -f test-index &&
>x &&
git add x &&
T=$(git write-tree) &&
(
git cat-file tree $T &&
git cat-file tree $T
) |
git hash-object -w -t tree --stdin
) &&
test_must_fail git fsck 2>out &&
grep "error in tree .*contains duplicate file entries" out
'
test_expect_success 'tag pointing to nonexistent' '
cat >invalid-tag <<-\EOF &&
object ffffffffffffffffffffffffffffffffffffffff
type commit
tag invalid
tagger T A Gger <[email protected]> 1234567890 -0000
This is an invalid tag.
EOF
tag=$(git hash-object -t tag -w --stdin <invalid-tag) &&
test_when_finished "remove_object $tag" &&
echo $tag >.git/refs/tags/invalid &&
test_when_finished "git update-ref -d refs/tags/invalid" &&
test_must_fail git fsck --tags >out &&
cat out &&
grep "broken link" out
'
test_expect_success 'tag pointing to something else than its type' '
sha=$(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" &&
echo $tag >.git/refs/tags/wrong &&
test_when_finished "git update-ref -d refs/tags/wrong" &&
test_must_fail git fsck --tags
'
test_expect_success 'tag with incorrect tag name & missing tagger' '
sha=$(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 -t tag -w --stdin <wrong-tag) &&
test_when_finished "remove_object $tag" &&
echo $tag >.git/refs/tags/wrong &&
test_when_finished "git update-ref -d refs/tags/wrong" &&
git fsck --tags 2>out &&
cat >expect <<-EOF &&
warning in tag $tag: invalid '\''tag'\'' name: wrong name format
warning in tag $tag: invalid format - expected '\''tagger'\'' line
EOF
test_cmp expect out
'
test_expect_success 'tag with bad tagger' '
sha=$(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" &&
echo $tag >.git/refs/tags/wrong &&
test_when_finished "git update-ref -d refs/tags/wrong" &&
test_must_fail git fsck --tags 2>out &&
grep "error in tag .*: invalid author/committer" out
'
test_expect_success 'cleaned up' '
git fsck >actual 2>&1 &&
test_cmp empty actual
'
test_expect_success 'rev-list --verify-objects' '
git rev-list --verify-objects --all >/dev/null 2>out &&
test_cmp empty out
'
test_expect_success 'rev-list --verify-objects with bad sha1' '
sha=$(echo blob | git hash-object -w --stdin) &&
old=$(echo $sha | sed "s+^..+&/+") &&
new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
sha="$(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 $cmt &&
test_when_finished "git update-ref -d refs/heads/bogus" &&
test_might_fail git rev-list --verify-objects refs/heads/bogus >/dev/null 2>out &&
cat out &&
grep -q "error: sha1 mismatch 63ffffffffffffffffffffffffffffffffffffff" out
'
_bz='\0'
_bz5="$_bz$_bz$_bz$_bz$_bz"
_bz20="$_bz5$_bz5$_bz5$_bz5"
test_expect_success 'fsck notices blob entry pointing to null sha1' '
(git init null-blob &&
cd null-blob &&
sha=$(printf "100644 file$_bz$_bz20" |
git hash-object -w --stdin -t tree) &&
git fsck 2>out &&
cat out &&
grep "warning.*null sha1" out
)
'
test_expect_success 'fsck notices submodule entry pointing to null sha1' '
(git init null-commit &&
cd null-commit &&
sha=$(printf "160000 submodule$_bz$_bz20" |
git hash-object -w --stdin -t tree) &&
git fsck 2>out &&
cat out &&
grep "warning.*null sha1" 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 &&
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 &&
cat out &&
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
)
'
# 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_done