diff options
| -rw-r--r-- | refs/files-backend.c | 2 | ||||
| -rwxr-xr-x | t/t1404-update-ref-errors.sh | 141 |
2 files changed, 142 insertions, 1 deletions
diff --git a/refs/files-backend.c b/refs/files-backend.c index 014dabb0bf..8cc1e07fdb 100644 --- a/refs/files-backend.c +++ b/refs/files-backend.c @@ -2570,7 +2570,7 @@ static int files_transaction_prepare(struct ref_store *ref_store, ret = lock_ref_for_update(refs, update, transaction, head_ref, &affected_refnames, err); if (ret) - break; + goto cleanup; if (update->flags & REF_DELETING && !(update->flags & REF_LOG_ONLY) && diff --git a/t/t1404-update-ref-errors.sh b/t/t1404-update-ref-errors.sh index 100d50e362..3a887b5113 100755 --- a/t/t1404-update-ref-errors.sh +++ b/t/t1404-update-ref-errors.sh @@ -34,6 +34,81 @@ test_update_rejected () { Q="'" +# Test adding and deleting D/F-conflicting references in a single +# transaction. +df_test() { + prefix="$1" + pack=: symadd=false symdel=false add_del=false addref= delref= + shift + while test $# -gt 0 + do + case "$1" in + --pack) + pack="git pack-refs --all" + shift + ;; + --sym-add) + # Perform the add via a symbolic reference + symadd=true + shift + ;; + --sym-del) + # Perform the del via a symbolic reference + symdel=true + shift + ;; + --del-add) + # Delete first reference then add second + add_del=false + delref="$prefix/r/$2" + addref="$prefix/r/$3" + shift 3 + ;; + --add-del) + # Add first reference then delete second + add_del=true + addref="$prefix/r/$2" + delref="$prefix/r/$3" + shift 3 + ;; + *) + echo 1>&2 "Extra args to df_test: $*" + return 1 + ;; + esac + done + git update-ref "$delref" $C && + if $symadd + then + addname="$prefix/s/symadd" && + git symbolic-ref "$addname" "$addref" + else + addname="$addref" + fi && + if $symdel + then + delname="$prefix/s/symdel" && + git symbolic-ref "$delname" "$delref" + else + delname="$delref" + fi && + cat >expected-err <<-EOF && + fatal: cannot lock ref $Q$addname$Q: $Q$delref$Q exists; cannot create $Q$addref$Q + EOF + $pack && + if $add_del + then + printf "%s\n" "create $addname $D" "delete $delname" + else + printf "%s\n" "delete $delname" "create $addname $D" + fi >commands && + test_must_fail git update-ref --stdin <commands 2>output.err && + test_cmp expected-err output.err && + printf "%s\n" "$C $delref" >expected-refs && + git for-each-ref --format="%(objectname) %(refname)" $prefix/r >actual-refs && + test_cmp expected-refs actual-refs +} + test_expect_success 'setup' ' git commit --allow-empty -m Initial && @@ -188,6 +263,72 @@ test_expect_success 'empty directory should not fool 1-arg delete' ' git update-ref --stdin ' +test_expect_success 'D/F conflict prevents add long + delete short' ' + df_test refs/df-al-ds --add-del foo/bar foo +' + +test_expect_success 'D/F conflict prevents add short + delete long' ' + df_test refs/df-as-dl --add-del foo foo/bar +' + +test_expect_success 'D/F conflict prevents delete long + add short' ' + df_test refs/df-dl-as --del-add foo/bar foo +' + +test_expect_success 'D/F conflict prevents delete short + add long' ' + df_test refs/df-ds-al --del-add foo foo/bar +' + +test_expect_success 'D/F conflict prevents add long + delete short packed' ' + df_test refs/df-al-dsp --pack --add-del foo/bar foo +' + +test_expect_success 'D/F conflict prevents add short + delete long packed' ' + df_test refs/df-as-dlp --pack --add-del foo foo/bar +' + +test_expect_success 'D/F conflict prevents delete long packed + add short' ' + df_test refs/df-dlp-as --pack --del-add foo/bar foo +' + +test_expect_success 'D/F conflict prevents delete short packed + add long' ' + df_test refs/df-dsp-al --pack --del-add foo foo/bar +' + +# Try some combinations involving symbolic refs... + +test_expect_success 'D/F conflict prevents indirect add long + delete short' ' + df_test refs/df-ial-ds --sym-add --add-del foo/bar foo +' + +test_expect_success 'D/F conflict prevents indirect add long + indirect delete short' ' + df_test refs/df-ial-ids --sym-add --sym-del --add-del foo/bar foo +' + +test_expect_success 'D/F conflict prevents indirect add short + indirect delete long' ' + df_test refs/df-ias-idl --sym-add --sym-del --add-del foo foo/bar +' + +test_expect_success 'D/F conflict prevents indirect delete long + indirect add short' ' + df_test refs/df-idl-ias --sym-add --sym-del --del-add foo/bar foo +' + +test_expect_success 'D/F conflict prevents indirect add long + delete short packed' ' + df_test refs/df-ial-dsp --sym-add --pack --add-del foo/bar foo +' + +test_expect_success 'D/F conflict prevents indirect add long + indirect delete short packed' ' + df_test refs/df-ial-idsp --sym-add --sym-del --pack --add-del foo/bar foo +' + +test_expect_success 'D/F conflict prevents add long + indirect delete short packed' ' + df_test refs/df-al-idsp --sym-del --pack --add-del foo/bar foo +' + +test_expect_success 'D/F conflict prevents indirect delete long packed + indirect add short' ' + df_test refs/df-idlp-ias --sym-add --sym-del --pack --del-add foo/bar foo +' + # Test various errors when reading the old values of references... test_expect_success 'missing old value blocks update' ' |