diff mbox series

[v2,2/2] list-objects-filter: handle unresolved sparse filter OID

Message ID 20190829223811.12072-3-jon@jonsimons.org (mailing list archive)
State New, archived
Headers show
Series partial-clone: fix two issues with sparse filter handling | expand

Commit Message

Jon Simons Aug. 29, 2019, 10:38 p.m. UTC 
Handle a potential NULL 'sparse_oid_value' when attempting to load
sparse filter exclusions by blob, to avoid segfaulting later during
'add_excludes_from_blob_to_list'.

While here, uniquify the errors emitted to distinguish between the
case that a given OID is NULL due to an earlier failure to resolve it,
and when an OID resolves but parsing the sparse filter spec fails.

t5616 is updated to demonstrate the change.

Co-authored-by: Jeff King <peff@peff.net>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Jon Simons <jon@jonsimons.org>
---
 list-objects-filter.c    | 6 +++++-
 t/t5616-partial-clone.sh | 7 +++++++
 2 files changed, 12 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/list-objects-filter.c b/list-objects-filter.c
index 36e1f774bc..252fae5d4e 100644
--- a/list-objects-filter.c
+++ b/list-objects-filter.c
@@ -464,9 +464,13 @@  static void *filter_sparse_oid__init(
 {
 	struct filter_sparse_data *d = xcalloc(1, sizeof(*d));
 	d->omits = omitted;
+	if (!filter_options->sparse_oid_value)
+		die(_("unable to read sparse filter specification from %s"),
+		      filter_options->filter_spec);
 	if (add_excludes_from_blob_to_list(filter_options->sparse_oid_value,
 					   NULL, 0, &d->el) < 0)
-		die("could not load filter specification");
+		die(_("unable to parse sparse filter data in %s"),
+		      oid_to_hex(filter_options->sparse_oid_value));
 
 	ALLOC_GROW(d->array_frame, d->nr + 1, d->alloc);
 	d->array_frame[d->nr].defval = 0; /* default to include */
diff --git a/t/t5616-partial-clone.sh b/t/t5616-partial-clone.sh
index 0c6f365bf2..495998b7fb 100755
--- a/t/t5616-partial-clone.sh
+++ b/t/t5616-partial-clone.sh
@@ -262,6 +262,13 @@  test_expect_success 'partial clone with sparse filter succeeds' '
 	git clone --no-local --no-checkout --filter=sparse:oid=master:odd-files sparse-src pc-odd
 '
 
+test_expect_success 'partial clone with unresolvable sparse filter fails cleanly' '
+	test_must_fail git clone --no-local --no-checkout --filter=sparse:oid=master:sparse-filter sparse-src sc1 2>err &&
+	test_i18ngrep "unable to read sparse filter specification from sparse:oid=master:sparse-filter" err &&
+	test_must_fail git clone --no-local --no-checkout --filter=sparse:oid=master sparse-src sc2 2>err &&
+	test_i18ngrep "unable to parse sparse filter data in $(git -C sparse-src rev-parse master)" err
+'
+
 . "$TEST_DIRECTORY"/lib-httpd.sh
 start_httpd