odb/source-packed: stub out remaining functions

Stub out remaining functions that we either don't need or that are
basically no-ops.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/odb/source-packed.c b/odb/source-packed.c
index e40b52e445c57c425d11cbb59379a3adcf53d63b..08a2de9bc511273afd343f27f472c27797aefe71 100644 (file)
--- a/odb/source-packed.c
+++ b/odb/source-packed.c
@@ -501,6 +501,43 @@ static int odb_source_packed_freshen_object(struct odb_source *source,
        return 1;
 }
 
+static int odb_source_packed_write_object(struct odb_source *source UNUSED,
+                                         const void *buf UNUSED,
+                                         unsigned long len UNUSED,
+                                         enum object_type type UNUSED,
+                                         struct object_id *oid UNUSED,
+                                         struct object_id *compat_oid UNUSED,
+                                         unsigned flags UNUSED)
+{
+       return error("packed backend cannot write objects");
+}
+
+static int odb_source_packed_write_object_stream(struct odb_source *source UNUSED,
+                                                struct odb_write_stream *stream UNUSED,
+                                                size_t len UNUSED,
+                                                struct object_id *oid UNUSED)
+{
+       return error("packed backend cannot write object streams");
+}
+
+static int odb_source_packed_begin_transaction(struct odb_source *source UNUSED,
+                                              struct odb_transaction **out UNUSED)
+{
+       return error("packed backend cannot begin transactions");
+}
+
+static int odb_source_packed_read_alternates(struct odb_source *source UNUSED,
+                                            struct strvec *out UNUSED)
+{
+       return 0;
+}
+
+static int odb_source_packed_write_alternate(struct odb_source *source UNUSED,
+                                            const char *alternate UNUSED)
+{
+       return error("packed backend cannot write alternates");
+}
+
 void (*report_garbage)(unsigned seen_bits, const char *path);
 
 static void report_helper(const struct string_list *list,
@@ -715,6 +752,11 @@ struct odb_source_packed *odb_source_packed_new(struct odb_source_files *parent)
        packed->base.count_objects = odb_source_packed_count_objects;
        packed->base.find_abbrev_len = odb_source_packed_find_abbrev_len;
        packed->base.freshen_object = odb_source_packed_freshen_object;
+       packed->base.write_object = odb_source_packed_write_object;
+       packed->base.write_object_stream = odb_source_packed_write_object_stream;
+       packed->base.begin_transaction = odb_source_packed_begin_transaction;
+       packed->base.read_alternates = odb_source_packed_read_alternates;
+       packed->base.write_alternate = odb_source_packed_write_alternate;
 
        if (!is_absolute_path(parent->base.path))
                chdir_notify_register(NULL, odb_source_packed_reparent, packed);