diff options
| -rw-r--r-- | builtin/fsck.c | 38 | ||||
| -rw-r--r-- | revision.c | 36 | ||||
| -rwxr-xr-x | t/t2030-unresolve-info.sh | 71 |
3 files changed, 145 insertions, 0 deletions
diff --git a/builtin/fsck.c b/builtin/fsck.c index 9e54892311..4b17ccc3f4 100644 --- a/builtin/fsck.c +++ b/builtin/fsck.c @@ -19,6 +19,7 @@ #include "decorate.h" #include "packfile.h" #include "object-store.h" +#include "resolve-undo.h" #include "run-command.h" #include "worktree.h" @@ -757,6 +758,42 @@ static int fsck_cache_tree(struct cache_tree *it) return err; } +static int fsck_resolve_undo(struct index_state *istate) +{ + struct string_list_item *item; + struct string_list *resolve_undo = istate->resolve_undo; + + if (!resolve_undo) + return 0; + + for_each_string_list_item(item, resolve_undo) { + const char *path = item->string; + struct resolve_undo_info *ru = item->util; + int i; + + if (!ru) + continue; + for (i = 0; i < 3; i++) { + struct object *obj; + + if (!ru->mode[i] || !S_ISREG(ru->mode[i])) + continue; + + obj = parse_object(the_repository, &ru->oid[i]); + if (!obj) { + error(_("%s: invalid sha1 pointer in resolve-undo"), + oid_to_hex(&ru->oid[i])); + errors_found |= ERROR_REFS; + } + obj->flags |= USED; + fsck_put_object_name(&fsck_walk_options, &ru->oid[i], + ":(%d):%s", i, path); + mark_object_reachable(obj); + } + } + return 0; +} + static void mark_object_for_connectivity(const struct object_id *oid) { struct object *obj = lookup_unknown_object(the_repository, oid); @@ -938,6 +975,7 @@ int cmd_fsck(int argc, const char **argv, const char *prefix) } if (active_cache_tree) fsck_cache_tree(active_cache_tree); + fsck_resolve_undo(&the_index); } check_connectivity(); diff --git a/revision.c b/revision.c index 7d435f8048..cd78627b20 100644 --- a/revision.c +++ b/revision.c @@ -33,6 +33,7 @@ #include "bloom.h" #include "json-writer.h" #include "list-objects-filter-options.h" +#include "resolve-undo.h" volatile show_early_output_fn_t show_early_output; @@ -1690,6 +1691,39 @@ static void add_cache_tree(struct cache_tree *it, struct rev_info *revs, } +static void add_resolve_undo_to_pending(struct index_state *istate, struct rev_info *revs) +{ + struct string_list_item *item; + struct string_list *resolve_undo = istate->resolve_undo; + + if (!resolve_undo) + return; + + for_each_string_list_item(item, resolve_undo) { + const char *path = item->string; + struct resolve_undo_info *ru = item->util; + int i; + + if (!ru) + continue; + for (i = 0; i < 3; i++) { + struct blob *blob; + + if (!ru->mode[i] || !S_ISREG(ru->mode[i])) + continue; + + blob = lookup_blob(revs->repo, &ru->oid[i]); + if (!blob) { + warning(_("resolve-undo records `%s` which is missing"), + oid_to_hex(&ru->oid[i])); + continue; + } + add_pending_object_with_path(revs, &blob->object, "", + ru->mode[i], path); + } + } +} + static void do_add_index_objects_to_pending(struct rev_info *revs, struct index_state *istate, unsigned int flags) @@ -1718,6 +1752,8 @@ static void do_add_index_objects_to_pending(struct rev_info *revs, add_cache_tree(istate->cache_tree, revs, &path, flags); strbuf_release(&path); } + + add_resolve_undo_to_pending(istate, revs); } void add_index_objects_to_pending(struct rev_info *revs, unsigned int flags) diff --git a/t/t2030-unresolve-info.sh b/t/t2030-unresolve-info.sh index f691e6d903..2d8c70b03a 100755 --- a/t/t2030-unresolve-info.sh +++ b/t/t2030-unresolve-info.sh @@ -194,4 +194,75 @@ test_expect_success 'rerere forget (add-add conflict)' ' test_i18ngrep "no remembered" actual ' +test_expect_success 'resolve-undo keeps blobs from gc' ' + git checkout -f main && + + # First make sure we do not have any cruft left in the object store + git repack -a -d && + git prune --expire=now && + git prune-packed && + git gc --prune=now && + git fsck --unreachable >cruft && + test_must_be_empty cruft && + + # Now add three otherwise unreferenced blob objects to the index + git reset --hard && + B1=$(echo "resolve undo test data 1" | git hash-object -w --stdin) && + B2=$(echo "resolve undo test data 2" | git hash-object -w --stdin) && + B3=$(echo "resolve undo test data 3" | git hash-object -w --stdin) && + git update-index --add --index-info <<-EOF && + 100644 $B1 1 frotz + 100644 $B2 2 frotz + 100644 $B3 3 frotz + EOF + + # These three blob objects are reachable (only) from the index + git fsck --unreachable >cruft && + test_must_be_empty cruft && + # and they should be protected from GC + git gc --prune=now && + git cat-file -e $B1 && + git cat-file -e $B2 && + git cat-file -e $B3 && + + # Now resolve the conflicted path + B0=$(echo "resolve undo test data 0" | git hash-object -w --stdin) && + git update-index --add --cacheinfo 100644,$B0,frotz && + + # These three blob objects are now reachable only from the resolve-undo + git fsck --unreachable >cruft && + test_must_be_empty cruft && + + # and they should survive GC + git gc --prune=now && + git cat-file -e $B0 && + git cat-file -e $B1 && + git cat-file -e $B2 && + git cat-file -e $B3 && + + # Now we switch away, which nukes resolve-undo, and + # blobs B0..B3 would become dangling. fsck should + # notice that they are now unreachable. + git checkout -f side && + git fsck --unreachable >cruft && + sort cruft >actual && + sort <<-EOF >expect && + unreachable blob $B0 + unreachable blob $B1 + unreachable blob $B2 + unreachable blob $B3 + EOF + test_cmp expect actual && + + # And they should go away when gc runs. + git gc --prune=now && + git fsck --unreachable >cruft && + test_must_be_empty cruft && + + test_must_fail git cat-file -e $B0 && + test_must_fail git cat-file -e $B1 && + test_must_fail git cat-file -e $B2 && + test_must_fail git cat-file -e $B3 +' + test_done |