index-pack: support checking objects but not links

The index-pack command currently supports the --check-self-contained-and-connected argument, for internal use only, that instructs it to only check for broken links and not broken objects. For partial clones, we need the inverse, so add a --fsck-objects argument that checks for broken objects and not broken links, also for internal use only. This will be used by fetch-pack in a subsequent patch. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Jonathan Tan committed Mar 14, 2018 at 11:42 UTC ffb2c0fe5c2dbfe2be0a4743ffed622295e1124c
3 files changed +12 -2
Documentation/git-index-pack.txt
+3
@@ -77,6 +77,9 @@ OPTIONS
77 --check-self-contained-and-connected::
78 Die if the pack contains broken links. For internal use only.
79
80 +--fsck-objects::
81 + Die if the pack contains broken objects. For internal use only.
82 +
83 --threads=<n>::
84 Specifies the number of threads to spawn when resolving
85 deltas. This requires that index-pack be compiled with
builtin/index-pack.c
+4 -2
@@ -828,7 +828,7 @@ static void sha1_object(const void *data, struct object_entry *obj_entry,
828 free(has_data);
829 }
830
831 - if (strict) {
831 + if (strict || do_fsck_object) {
832 read_lock();
833 if (type == OBJ_BLOB) {
834 struct blob *blob = lookup_blob(oid);
@@ -854,7 +854,7 @@ static void sha1_object(const void *data, struct object_entry *obj_entry,
854 if (do_fsck_object &&
855 fsck_object(obj, buf, size, &fsck_options))
856 die(_("Error in object"));
857 - if (fsck_walk(obj, NULL, &fsck_options))
857 + if (strict && fsck_walk(obj, NULL, &fsck_options))
858 die(_("Not all child objects of %s are reachable"), oid_to_hex(&obj->oid));
859
860 if (obj->type == OBJ_TREE) {
@@ -1689,6 +1689,8 @@ int cmd_index_pack(int argc, const char **argv, const char *prefix)
1689 } else if (!strcmp(arg, "--check-self-contained-and-connected")) {
1690 strict = 1;
1691 check_self_contained_and_connected = 1;
1692 + } else if (!strcmp(arg, "--fsck-objects")) {
1693 + do_fsck_object = 1;
1694 } else if (!strcmp(arg, "--verify")) {
1695 verify = 1;
1696 } else if (!strcmp(arg, "--verify-stat")) {
t/t5302-pack-index.sh
+5
@@ -262,4 +262,9 @@ EOF
262 grep "^warning:.* expected .tagger. line" err
263 '
264
265 +test_expect_success 'index-pack --fsck-objects also warns upon missing tagger in tag' '
266 + git index-pack --fsck-objects tag-test-${pack1}.pack 2>err &&
267 + grep "^warning:.* expected .tagger. line" err
268 +'
269 +
270 test_done