mirror of
https://github.com/git/git.git
synced 2024-11-28 12:34:08 +08:00
0fbcaef6b4
In general, Git tries not to arbitrarily limit what it will store, and
there are currently no limits at all on the size of the path we find in
a tree. In theory you could have one that is gigabytes long.
But in practice this freedom is not really helping anybody, and is
potentially harmful:
1. Most operating systems have much lower limits for the size of a
single pathname component (e.g., on Linux you'll generally get
ENAMETOOLONG for anything over 255 bytes). And while you _can_ use
Git in a way that never touches the filesystem (manipulating the
index and trees directly), it's still probably not a good idea to
have gigantic tree names. Many operations load and traverse them,
so any clever Git-as-a-database scheme is likely to perform poorly
in that case.
2. We still have a lot of code which assumes strings are reasonably
sized, and I won't be at all surprised if you can trigger some
interesting integer overflows with gigantic pathnames. Stopping
malicious trees from entering the repository provides an extra line
of defense, protecting downstream code.
This patch implements an fsck check so that such trees can be rejected
by transfer.fsckObjects. I've picked a reasonably high maximum depth
here (4096) that hopefully should not bother anybody in practice. I've
also made it configurable, as an escape hatch.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1064 lines
32 KiB
Bash
Executable File
1064 lines
32 KiB
Bash
Executable File
#!/bin/sh
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test_description='git fsck random collection of tests
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* (HEAD) B
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* (main) A
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'
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. ./test-lib.sh
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test_expect_success setup '
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git config gc.auto 0 &&
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git config i18n.commitencoding ISO-8859-1 &&
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test_commit A fileA one &&
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git config --unset i18n.commitencoding &&
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git checkout HEAD^0 &&
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test_commit B fileB two &&
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git tag -d A B &&
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git reflog expire --expire=now --all
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'
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test_expect_success 'loose objects borrowed from alternate are not missing' '
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mkdir another &&
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(
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cd another &&
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git init &&
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echo ../../../.git/objects >.git/objects/info/alternates &&
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test_commit C fileC one &&
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git fsck --no-dangling >../actual 2>&1
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) &&
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test_must_be_empty actual
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'
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test_expect_success 'HEAD is part of refs, valid objects appear valid' '
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git fsck >actual 2>&1 &&
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test_must_be_empty actual
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'
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# Corruption tests follow. Make sure to remove all traces of the
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# specific corruption you test afterwards, lest a later test trip over
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# it.
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sha1_file () {
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git rev-parse --git-path objects/$(test_oid_to_path "$1")
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}
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remove_object () {
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rm "$(sha1_file "$1")"
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}
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test_expect_success 'object with hash mismatch' '
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git init --bare hash-mismatch &&
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(
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cd hash-mismatch &&
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oid=$(echo blob | git hash-object -w --stdin) &&
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oldoid=$oid &&
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old=$(test_oid_to_path "$oid") &&
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new=$(dirname $old)/$(test_oid ff_2) &&
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oid="$(dirname $new)$(basename $new)" &&
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mv objects/$old objects/$new &&
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git update-index --add --cacheinfo 100644 $oid foo &&
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tree=$(git write-tree) &&
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cmt=$(echo bogus | git commit-tree $tree) &&
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git update-ref refs/heads/bogus $cmt &&
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test_must_fail git fsck 2>out &&
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grep "$oldoid: hash-path mismatch, found at: .*$new" out
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)
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'
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test_expect_success 'object with hash and type mismatch' '
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git init --bare hash-type-mismatch &&
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(
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cd hash-type-mismatch &&
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oid=$(echo blob | git hash-object -w --stdin -t garbage --literally) &&
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oldoid=$oid &&
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old=$(test_oid_to_path "$oid") &&
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new=$(dirname $old)/$(test_oid ff_2) &&
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oid="$(dirname $new)$(basename $new)" &&
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mv objects/$old objects/$new &&
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git update-index --add --cacheinfo 100644 $oid foo &&
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tree=$(git write-tree) &&
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cmt=$(echo bogus | git commit-tree $tree) &&
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git update-ref refs/heads/bogus $cmt &&
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test_must_fail git fsck 2>out &&
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grep "^error: $oldoid: hash-path mismatch, found at: .*$new" out &&
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grep "^error: $oldoid: object is of unknown type '"'"'garbage'"'"'" out
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)
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'
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test_expect_success 'zlib corrupt loose object output ' '
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git init --bare corrupt-loose-output &&
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(
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cd corrupt-loose-output &&
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oid=$(git hash-object -w --stdin --literally </dev/null) &&
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oidf=objects/$(test_oid_to_path "$oid") &&
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chmod +w $oidf &&
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echo extra garbage >>$oidf &&
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cat >expect.error <<-EOF &&
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error: garbage at end of loose object '\''$oid'\''
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error: unable to unpack contents of ./$oidf
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error: $oid: object corrupt or missing: ./$oidf
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EOF
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test_must_fail git fsck 2>actual &&
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grep ^error: actual >error &&
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test_cmp expect.error error
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)
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'
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test_expect_success 'branch pointing to non-commit' '
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git rev-parse HEAD^{tree} >.git/refs/heads/invalid &&
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test_when_finished "git update-ref -d refs/heads/invalid" &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "not a commit" out
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'
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test_expect_success 'HEAD link pointing at a funny object' '
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test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
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mv .git/HEAD .git/SAVED_HEAD &&
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echo $ZERO_OID >.git/HEAD &&
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# avoid corrupt/broken HEAD from interfering with repo discovery
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test_must_fail env GIT_DIR=.git git fsck 2>out &&
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test_i18ngrep "detached HEAD points" out
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'
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test_expect_success 'HEAD link pointing at a funny place' '
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test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
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mv .git/HEAD .git/SAVED_HEAD &&
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echo "ref: refs/funny/place" >.git/HEAD &&
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# avoid corrupt/broken HEAD from interfering with repo discovery
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test_must_fail env GIT_DIR=.git git fsck 2>out &&
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test_i18ngrep "HEAD points to something strange" out
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'
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test_expect_success 'HEAD link pointing at a funny object (from different wt)' '
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test_when_finished "mv .git/SAVED_HEAD .git/HEAD" &&
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test_when_finished "rm -rf .git/worktrees wt" &&
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git worktree add wt &&
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mv .git/HEAD .git/SAVED_HEAD &&
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echo $ZERO_OID >.git/HEAD &&
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# avoid corrupt/broken HEAD from interfering with repo discovery
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test_must_fail git -C wt fsck 2>out &&
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test_i18ngrep "main-worktree/HEAD: detached HEAD points" out
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'
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test_expect_success 'other worktree HEAD link pointing at a funny object' '
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test_when_finished "rm -rf .git/worktrees other" &&
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git worktree add other &&
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echo $ZERO_OID >.git/worktrees/other/HEAD &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "worktrees/other/HEAD: detached HEAD points" out
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'
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test_expect_success 'other worktree HEAD link pointing at missing object' '
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test_when_finished "rm -rf .git/worktrees other" &&
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git worktree add other &&
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echo "Contents missing from repo" | git hash-object --stdin >.git/worktrees/other/HEAD &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "worktrees/other/HEAD: invalid sha1 pointer" out
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'
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test_expect_success 'other worktree HEAD link pointing at a funny place' '
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test_when_finished "rm -rf .git/worktrees other" &&
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git worktree add other &&
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echo "ref: refs/funny/place" >.git/worktrees/other/HEAD &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "worktrees/other/HEAD points to something strange" out
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'
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test_expect_success 'commit with multiple signatures is okay' '
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git cat-file commit HEAD >basis &&
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cat >sigs <<-EOF &&
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gpgsig -----BEGIN PGP SIGNATURE-----
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VGhpcyBpcyBub3QgcmVhbGx5IGEgc2lnbmF0dXJlLg==
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-----END PGP SIGNATURE-----
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gpgsig-sha256 -----BEGIN PGP SIGNATURE-----
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VGhpcyBpcyBub3QgcmVhbGx5IGEgc2lnbmF0dXJlLg==
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-----END PGP SIGNATURE-----
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EOF
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sed -e "/^committer/q" basis >okay &&
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cat sigs >>okay &&
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echo >>okay &&
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sed -e "1,/^$/d" basis >>okay &&
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cat okay &&
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new=$(git hash-object -t commit -w --stdin <okay) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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git fsck 2>out &&
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cat out &&
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! grep "commit $new" out
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'
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test_expect_success 'email without @ is okay' '
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git cat-file commit HEAD >basis &&
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sed "s/@/AT/" basis >okay &&
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new=$(git hash-object -t commit -w --stdin <okay) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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git fsck 2>out &&
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! grep "commit $new" out
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'
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test_expect_success 'email with embedded > is not okay' '
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git cat-file commit HEAD >basis &&
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sed "s/@[a-z]/&>/" basis >bad-email &&
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new=$(git hash-object --literally -t commit -w --stdin <bad-email) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "error in commit $new" out
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'
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test_expect_success 'missing < email delimiter is reported nicely' '
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git cat-file commit HEAD >basis &&
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sed "s/<//" basis >bad-email-2 &&
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new=$(git hash-object --literally -t commit -w --stdin <bad-email-2) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "error in commit $new.* - bad name" out
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'
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test_expect_success 'missing email is reported nicely' '
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git cat-file commit HEAD >basis &&
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sed "s/[a-z]* <[^>]*>//" basis >bad-email-3 &&
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new=$(git hash-object --literally -t commit -w --stdin <bad-email-3) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "error in commit $new.* - missing email" out
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'
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test_expect_success '> in name is reported' '
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git cat-file commit HEAD >basis &&
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sed "s/ </> </" basis >bad-email-4 &&
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new=$(git hash-object --literally -t commit -w --stdin <bad-email-4) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "error in commit $new" out
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'
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# date is 2^64 + 1
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test_expect_success 'integer overflow in timestamps is reported' '
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git cat-file commit HEAD >basis &&
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sed "s/^\\(author .*>\\) [0-9]*/\\1 18446744073709551617/" \
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<basis >bad-timestamp &&
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new=$(git hash-object --literally -t commit -w --stdin <bad-timestamp) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "error in commit $new.*integer overflow" out
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'
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test_expect_success 'commit with NUL in header' '
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git cat-file commit HEAD >basis &&
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sed "s/author ./author Q/" <basis | q_to_nul >commit-NUL-header &&
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new=$(git hash-object --literally -t commit -w --stdin <commit-NUL-header) &&
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test_when_finished "remove_object $new" &&
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git update-ref refs/heads/bogus "$new" &&
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test_when_finished "git update-ref -d refs/heads/bogus" &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "error in commit $new.*unterminated header: NUL at offset" out
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'
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test_expect_success 'tree object with duplicate entries' '
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test_when_finished "for i in \$T; do remove_object \$i; done" &&
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T=$(
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GIT_INDEX_FILE=test-index &&
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export GIT_INDEX_FILE &&
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rm -f test-index &&
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>x &&
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git add x &&
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git rev-parse :x &&
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T=$(git write-tree) &&
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echo $T &&
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(
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git cat-file tree $T &&
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git cat-file tree $T
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) |
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git hash-object --literally -w -t tree --stdin
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) &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "error in tree .*contains duplicate file entries" out
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'
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check_duplicate_names () {
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expect=$1 &&
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shift &&
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names=$@ &&
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test_expect_$expect "tree object with duplicate names: $names" '
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test_when_finished "remove_object \$blob" &&
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test_when_finished "remove_object \$tree" &&
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test_when_finished "remove_object \$badtree" &&
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blob=$(echo blob | git hash-object -w --stdin) &&
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printf "100644 blob %s\t%s\n" $blob x.2 >tree &&
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tree=$(git mktree <tree) &&
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for name in $names
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do
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case "$name" in
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*/) printf "040000 tree %s\t%s\n" $tree "${name%/}" ;;
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*) printf "100644 blob %s\t%s\n" $blob "$name" ;;
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esac
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done >badtree &&
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badtree=$(git mktree <badtree) &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "$badtree" out &&
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test_i18ngrep "error in tree .*contains duplicate file entries" out
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'
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}
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check_duplicate_names success x x.1 x/
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check_duplicate_names success x x.1.2 x.1/ x/
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check_duplicate_names success x x.1 x.1.2 x/
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test_expect_success 'unparseable tree object' '
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test_oid_cache <<-\EOF &&
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junk sha1:twenty-bytes-of-junk
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junk sha256:twenty-bytes-of-junk-twelve-more
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EOF
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test_when_finished "git update-ref -d refs/heads/wrong" &&
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test_when_finished "remove_object \$tree_sha1" &&
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test_when_finished "remove_object \$commit_sha1" &&
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junk=$(test_oid junk) &&
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tree_sha1=$(printf "100644 \0$junk" | git hash-object -t tree --stdin -w --literally) &&
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commit_sha1=$(git commit-tree $tree_sha1) &&
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git update-ref refs/heads/wrong $commit_sha1 &&
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test_must_fail git fsck 2>out &&
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test_i18ngrep "error: empty filename in tree entry" out &&
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test_i18ngrep "$tree_sha1" out &&
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test_i18ngrep ! "fatal: empty filename in tree entry" out
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'
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test_expect_success 'tree entry with type mismatch' '
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test_when_finished "remove_object \$blob" &&
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test_when_finished "remove_object \$tree" &&
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test_when_finished "remove_object \$commit" &&
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test_when_finished "git update-ref -d refs/heads/type_mismatch" &&
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blob=$(echo blob | git hash-object -w --stdin) &&
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blob_bin=$(echo $blob | hex2oct) &&
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tree=$(
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printf "40000 dir\0${blob_bin}100644 file\0${blob_bin}" |
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git hash-object -t tree --stdin -w --literally
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) &&
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commit=$(git commit-tree $tree) &&
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git update-ref refs/heads/type_mismatch $commit &&
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test_must_fail git fsck >out 2>&1 &&
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test_i18ngrep "is a blob, not a tree" out &&
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test_i18ngrep ! "dangling blob" out
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'
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test_expect_success 'tree entry with bogus mode' '
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test_when_finished "remove_object \$blob" &&
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test_when_finished "remove_object \$tree" &&
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blob=$(echo blob | git hash-object -w --stdin) &&
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blob_oct=$(echo $blob | hex2oct) &&
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tree=$(printf "100000 foo\0${blob_oct}" |
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git hash-object -t tree --stdin -w --literally) &&
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git fsck 2>err &&
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cat >expect <<-EOF &&
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warning in tree $tree: badFilemode: contains bad file modes
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EOF
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test_cmp expect err
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'
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test_expect_success 'tag pointing to nonexistent' '
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badoid=$(test_oid deadbeef) &&
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cat >invalid-tag <<-EOF &&
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object $badoid
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type commit
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tag invalid
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tagger T A Gger <tagger@example.com> 1234567890 -0000
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This is an invalid tag.
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EOF
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tag=$(git hash-object -t tag -w --stdin <invalid-tag) &&
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test_when_finished "remove_object $tag" &&
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echo $tag >.git/refs/tags/invalid &&
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test_when_finished "git update-ref -d refs/tags/invalid" &&
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test_must_fail git fsck --tags >out &&
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test_i18ngrep "broken link" out
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'
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|
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test_expect_success 'tag pointing to something else than its type' '
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sha=$(echo blob | git hash-object -w --stdin) &&
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test_when_finished "remove_object $sha" &&
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cat >wrong-tag <<-EOF &&
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object $sha
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type commit
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tag wrong
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tagger T A Gger <tagger@example.com> 1234567890 -0000
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This is an invalid tag.
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EOF
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tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
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test_when_finished "remove_object $tag" &&
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echo $tag >.git/refs/tags/wrong &&
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test_when_finished "git update-ref -d refs/tags/wrong" &&
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test_must_fail git fsck --tags
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'
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test_expect_success 'tag with incorrect tag name & missing tagger' '
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sha=$(git rev-parse HEAD) &&
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cat >wrong-tag <<-EOF &&
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object $sha
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type commit
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tag wrong name format
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This is an invalid tag.
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EOF
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tag=$(git hash-object --literally -t tag -w --stdin <wrong-tag) &&
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test_when_finished "remove_object $tag" &&
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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: 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" &&
|
|
echo $tag >.git/refs/tags/wrong &&
|
|
test_when_finished "git update-ref -d refs/tags/wrong" &&
|
|
test_must_fail git fsck --tags 2>out &&
|
|
test_i18ngrep "error in tag .*: invalid author/committer" out
|
|
'
|
|
|
|
test_expect_success 'tag with NUL in header' '
|
|
sha=$(git rev-parse HEAD) &&
|
|
q_to_nul >tag-NUL-header <<-EOF &&
|
|
object $sha
|
|
type commit
|
|
tag contains-Q-in-header
|
|
tagger T A Gger <tagger@example.com> 1234567890 -0000
|
|
|
|
This is an invalid tag.
|
|
EOF
|
|
|
|
tag=$(git hash-object --literally -t tag -w --stdin <tag-NUL-header) &&
|
|
test_when_finished "remove_object $tag" &&
|
|
echo $tag >.git/refs/tags/wrong &&
|
|
test_when_finished "git update-ref -d refs/tags/wrong" &&
|
|
test_must_fail git fsck --tags 2>out &&
|
|
test_i18ngrep "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_i18ngrep -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_i18ngrep "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_i18ngrep "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_i18ngrep "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_i18ngrep nulInCommit warn.1 &&
|
|
git fsck 2>warn.2 &&
|
|
test_i18ngrep 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_i18ngrep "$tree (refs/tags/augustus44\\^:" out
|
|
)
|
|
'
|
|
|
|
test_expect_success 'alternate objects are correctly blamed' '
|
|
test_when_finished "rm -rf alt.git .git/objects/info/alternates" &&
|
|
name=$(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 $path) &&
|
|
test_must_fail git fsck >out 2>&1 &&
|
|
test_i18ngrep alt.git out
|
|
'
|
|
|
|
test_expect_success 'fsck errors in packed objects' '
|
|
git cat-file commit HEAD >basis &&
|
|
sed "s/</one/" basis >one &&
|
|
sed "s/</foo/" basis >two &&
|
|
one=$(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_i18ngrep "error in commit $one.* - bad name" out &&
|
|
test_i18ngrep "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 $hsh &&
|
|
test_must_fail git fsck 2>out &&
|
|
test_i18ngrep "checksum mismatch" out
|
|
'
|
|
|
|
test_expect_success 'fsck finds problems in duplicate loose objects' '
|
|
rm -rf broken-duplicate &&
|
|
git init broken-duplicate &&
|
|
(
|
|
cd broken-duplicate &&
|
|
test_commit duplicate &&
|
|
# no "-d" here, so we end up with duplicates
|
|
git repack &&
|
|
# now corrupt the loose copy
|
|
oid="$(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 >>"$file" &&
|
|
test_must_fail git fsck 2>out &&
|
|
test_i18ngrep "garbage.*$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 >>"$file" &&
|
|
test_must_fail git -c core.bigfilethreshold=5 fsck 2>out &&
|
|
test_i18ngrep "garbage.*$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_i18ngrep corrupt.*$blob out &&
|
|
|
|
test_must_fail git -c core.bigfilethreshold=128 fsck 2>out &&
|
|
test_i18ngrep corrupt.*$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: $!";
|
|
'
|
|
}
|
|
|
|
# Corrupt the checksum on the index and then
|
|
# verify that only fsck notices.
|
|
test_expect_success 'detect corrupt index file in fsck' '
|
|
cp .git/index .git/index.backup &&
|
|
test_when_finished "mv .git/index.backup .git/index" &&
|
|
corrupt_index_checksum &&
|
|
test_must_fail git fsck --cache 2>errors &&
|
|
test_i18ngrep "bad index file" errors
|
|
'
|
|
|
|
test_expect_success 'fsck error and recovery on invalid object type' '
|
|
git init --bare garbage-type &&
|
|
(
|
|
cd garbage-type &&
|
|
|
|
garbage_blob=$(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
|