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odb: use size_t for object_info.sizep and the size APIs

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When `js/objects-larger-than-4gb-on-windows` widened the streaming,
index-pack and unpack-objects code paths, in the interest of keeping the
patches somewhat reasonably-sized, it left the public ODB API still
typed in `unsigned long`. In particular `struct object_info::sizep` and
the four wrappers built on top of it (`odb_read_object`,
`odb_read_object_peeled`, `odb_read_object_info`, `odb_pretend_object`)
still return the unpacked size through `unsigned long *`, so on Windows
`cat-file -s` and the `git add` / `git status` paths for a >4 GiB blob
silently cap at 4 GiB.

Widen the field and the four wrappers. The previous commits already
widened the `unpack_entry()` cascade and pack-objects' in-core size
accessors, so most of the cascade arrives here with no further work: the
temporary shims in `packed_object_info_with_index_pos()` and in
`unpack_entry()`'s delta-base recovery path go away, the two
`SET_SIZE(entry, cast_size_t_to_ulong(canonical_size))` calls in
`check_object()` and the matching one in `drop_reused_delta()` collapse
to plain `SET_SIZE`, and `oe_get_size_slow()`'s tail
`cast_size_t_to_ulong()` is gone too.

What remains narrow are the boundaries this series does not
intend to touch: the diff, blame, textconv and fast-import machinery.

Even so, this patch is unfortunately quite large.

Assisted-by: Opus 4.7
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This commit is contained in:
Johannes Schindelin
2026-06-01 17:53:15 +02:00
parent 12c142f8ab
commit 37d030d867
65 changed files with 209 additions and 191 deletions
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10
commit.c
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@@ -395,7 +395,7 @@ const void *repo_get_commit_buffer(struct repository *r,
const void *ret = get_cached_commit_buffer(r, commit, sizep);
if (!ret) {
enum object_type type;
unsigned long size;
size_t size;
ret = odb_read_object(r->objects, &commit->object.oid, &type, &size);
if (!ret)
die("cannot read commit object %s",
@@ -404,7 +404,7 @@ const void *repo_get_commit_buffer(struct repository *r,
die("expected commit for %s, got %s",
oid_to_hex(&commit->object.oid), type_name(type));
if (sizep)
*sizep = size;
*sizep = cast_size_t_to_ulong(size);
}
return ret;
}
@@ -437,7 +437,7 @@ static inline void set_commit_tree(struct commit *c, struct tree *t)
static void load_tree_from_commit_contents(struct repository *r, struct commit *commit)
{
enum object_type type;
unsigned long size;
size_t size;
char *buf;
const char *p;
struct object_id tree_oid;
@@ -604,7 +604,7 @@ int repo_parse_commit_internal(struct repository *r,
{
enum object_type type;
void *buffer;
unsigned long size;
size_t size;
struct object_info oi = {
.typep = &type,
.sizep = &size,
@@ -1313,7 +1313,7 @@ static void handle_signed_tag(const struct commit *parent, struct commit_extra_h
struct merge_remote_desc *desc;
struct commit_extra_header *mergetag;
char *buf;
unsigned long size;
size_t size;
enum object_type type;
struct strbuf payload = STRBUF_INIT;
struct strbuf signature = STRBUF_INIT;