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[PATCH 1/4] pack-objects: introduce `stdin_packs_context` struct

From
Taylor Blau <ttaylorr@openai.com>
Date
Sep 30, 2026, 01:28 UTC
Message-ID
<64bb13e2db2e5c22e842c188e08861d63e99dc77.1790731662.git.me@ttaylorr.com>
In-Reply-To
<cover.1790731662.git.me@ttaylorr.com>

`stdin_packs_read_input()` currently receives a pointer to the `rev_info` struct and '--stdin-packs' mode separately as arguments, but the object enumeration callbacks only receive a pointer to the `rev_info` struct.

Wrap the pair in a new `stdin_packs_context` struct so that a future change may reference the '--stdin-packs' mode within the various object enumeration callbacks.

Signed-off-by: Taylor Blau <ttaylorr@openai.com>
---
 builtin/pack-objects.c | 41 +++++++++++++++++++++++++----------------
 1 file changed, 25 insertions(+), 16 deletions(-)
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index af9390a46b9..01adf80a2bc 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -3804,11 +3804,17 @@ static int git_pack_config(const char *k, const char *v,
 static int stdin_packs_found_nr;
 static int stdin_packs_hints_nr;
 
+struct stdin_packs_context {
+	struct rev_info *revs;
+	enum stdin_packs_mode mode;
+};
+
 static int add_object_entry_from_pack(const struct object_id *oid,
 				      struct packed_git *p,
 				      uint32_t pos,
 				      void *_data)
 {
+	struct stdin_packs_context *ctx = _data;
 	off_t ofs;
 	struct object_info oi = OBJECT_INFO_INIT;
 	enum object_type type = OBJ_NONE;
@@ -3827,7 +3833,6 @@ static int add_object_entry_from_pack(const struct object_id *oid,
 		die(_("could not get type of object %s in pack %s"),
 		    oid_to_hex(oid), p->pack_name);
 	} else if (type == OBJ_COMMIT) {
-		struct rev_info *revs = _data;
 		/*
 		 * commits in included packs are used as starting points
 		 * for the subsequent revision walk
@@ -3840,7 +3845,7 @@ static int add_object_entry_from_pack(const struct object_id *oid,
 		 * However, we'll only add those objects to the packing
 		 * list after checking `want_object_in_pack()` below.
 		 */
-		add_pending_oid(revs, NULL, oid, 0);
+		add_pending_oid(ctx->revs, NULL, oid, 0);
 	}
 
 	if (!want_object_in_pack(oid, 0, &p, &ofs))
@@ -3954,8 +3959,9 @@ static int stdin_packs_include_check(struct commit *commit, void *data)
 }
 
 static void stdin_packs_add_pack_entries(struct strmap *packs,
-					 struct rev_info *revs)
+					 struct stdin_packs_context *ctx)
 {
+	struct rev_info *revs = ctx->revs;
 	struct string_list keys = STRING_LIST_INIT_NODUP;
 	struct string_list_item *item;
 	struct hashmap_iter iter;
@@ -3994,15 +4000,14 @@ static void stdin_packs_add_pack_entries(struct strmap *packs,
 		    (info->kind & STDIN_PACK_EXCLUDE_OPEN))
 			for_each_object_in_pack(info->p,
 						add_object_entry_from_pack,
-						revs,
+						ctx,
 						ODB_FOR_EACH_OBJECT_PACK_ORDER);
 	}
 
 	string_list_clear(&keys, 0);
 }
 
-static void stdin_packs_read_input(struct rev_info *revs,
-				   enum stdin_packs_mode mode)
+static void stdin_packs_read_input(struct stdin_packs_context *ctx)
 {
 	struct strbuf buf = STRBUF_INIT;
 	struct strmap packs = STRMAP_INIT;
@@ -4017,7 +4022,7 @@ static void stdin_packs_read_input(struct rev_info *revs,
 			continue;
 		else if (*key == '^')
 			kind = STDIN_PACK_EXCLUDE_CLOSED;
-		else if (*key == '!' && mode == STDIN_PACKS_MODE_FOLLOW)
+		else if (*key == '!' && ctx->mode == STDIN_PACKS_MODE_FOLLOW)
 			kind = STDIN_PACK_EXCLUDE_OPEN;
 
 		if (kind != STDIN_PACK_INCLUDE)
@@ -4082,19 +4087,23 @@ static void stdin_packs_read_input(struct rev_info *revs,
 		info->p = p;
 	}
 
-	stdin_packs_add_pack_entries(&packs, revs);
+	stdin_packs_add_pack_entries(&packs, ctx);
 
 	strbuf_release(&buf);
 	strmap_clear(&packs, 1);
 }
 
-static void add_unreachable_loose_objects(struct rev_info *revs);
+static void add_unreachable_loose_objects(struct stdin_packs_context *ctx);
 
 static void read_stdin_packs(struct repository *repo,
 			     enum stdin_packs_mode mode, int rev_list_unpacked)
 {
 	int prev_fetch_if_missing = repo->fetch_if_missing;
 	struct rev_info revs;
+	struct stdin_packs_context ctx = {
+		.revs = &revs,
+		.mode = mode,
+	};
 
 	/*
 	 * The revision walk may hit objects that are promised, only. As the
@@ -4131,9 +4140,9 @@ static void read_stdin_packs(struct repository *repo,
 		 */
 		ignore_packed_keep_in_core_open = 1;
 	}
-	stdin_packs_read_input(&revs, mode);
+	stdin_packs_read_input(&ctx);
 	if (rev_list_unpacked)
-		add_unreachable_loose_objects(&revs);
+		add_unreachable_loose_objects(&ctx);
 
 	if (prepare_revision_walk(&revs))
 		die(_("revision walk setup failed"));
@@ -4541,7 +4550,7 @@ static void add_objects_in_unpacked_packs(void)
 static int add_loose_object(const struct object_id *oid, const char *path,
 			    void *data)
 {
-	struct rev_info *revs = data;
+	struct stdin_packs_context *ctx = data;
 	enum object_type type = odb_read_object_info(the_repository->objects, oid, NULL);
 
 	if (type < 0) {
@@ -4563,8 +4572,8 @@ static int add_loose_object(const struct object_id *oid, const char *path,
 		add_object_entry(oid, type, "", 0);
 	}
 
-	if (revs && type == OBJ_COMMIT)
-		add_pending_oid(revs, NULL, oid, 0);
+	if (ctx && type == OBJ_COMMIT)
+		add_pending_oid(ctx->revs, NULL, oid, 0);
 
 	return 0;
 }
@@ -4574,10 +4583,10 @@ static int add_loose_object(const struct object_id *oid, const char *path,
  * add_object_entry will weed out duplicates, so we just add every
  * loose object we find.
  */
-static void add_unreachable_loose_objects(struct rev_info *revs)
+static void add_unreachable_loose_objects(struct stdin_packs_context *ctx)
 {
 	for_each_loose_file_in_source(the_repository->objects->sources,
-				      add_loose_object, NULL, NULL, revs);
+				      add_loose_object, NULL, NULL, ctx);
 }
 
 static int has_sha1_pack_kept_or_nonlocal(const struct object_id *oid)
-- 
2.56.0.4.gbee41d2fc68
Previous: Taylor BlauNext: Junio C Hamano
Message 2 of 41 in “repack: various corner cases for cruft-less MIDXs”
  1. 0/4 repack: various corner cases for cruft-less MIDXsTaylor Blau, Sep 30, 2026
  2. 1/4 pack-objects: introduce `stdin_packs_context` structTaylor Blau, Sep 30, 2026
  3. Junio C HamanoSep 30, 2026
  4. Taylor BlauOct 1, 2026
  5. 2/4 pack-objects: ensure tree/tag closure with '--stdin-packs=follow'Taylor Blau, Sep 30, 2026
  6. Junio C HamanoSep 30, 2026
  7. Derrick StoleeSep 30, 2026
  8. Taylor BlauOct 1, 2026
  9. Elijah NewrenOct 1, 2026
  10. Taylor BlauOct 2, 2026
  11. Jeff KingOct 2, 2026
  12. Jeff KingSep 30, 2026
  13. Taylor BlauOct 1, 2026
  14. 3/4 repack: retain cruft packs in MIDXs after incremental repacksTaylor Blau, Sep 30, 2026
  15. Jeff KingSep 30, 2026
  16. Taylor BlauOct 1, 2026
  17. 4/4 repack: retain cruft packs in MIDXs containing kept packsTaylor Blau, Sep 30, 2026
  18. Jeff KingSep 30, 2026
  19. Taylor BlauOct 1, 2026
  20. Jeff KingSep 30, 2026
  21. Taylor BlauOct 1, 2026
  22. 0/8 repack: various corner cases for cruft-less MIDXsTaylor Blau, Oct 1, 2026
  23. 1/8 pack-objects: introduce `stdin_packs_context` structTaylor Blau, Oct 1, 2026
  24. 2/8 pack-objects: ensure tree/tag closure with '--stdin-packs=follow'Taylor Blau, Oct 1, 2026
  25. Jeff KingOct 2, 2026
  26. Taylor BlauOct 3, 2026
  27. Jeff KingOct 3, 2026
  28. 3/8 repack: retain cruft packs in MIDXs after incremental repacksTaylor Blau, Oct 1, 2026
  29. 4/8 repack: use a sorted list for explicitly kept packsTaylor Blau, Oct 1, 2026
  30. Jeff KingOct 2, 2026
  31. 5/8 repack: follow kept packs when omitting cruft from the MIDXTaylor Blau, Oct 1, 2026
  32. Jeff KingOct 2, 2026
  33. Taylor BlauOct 3, 2026
  34. 6/8 repack: track the preferred pack explicitly in MIDX write stepsTaylor Blau, Oct 1, 2026
  35. Jeff KingOct 2, 2026
  36. Taylor BlauOct 3, 2026
  37. Jeff KingOct 3, 2026
  38. 7/8 repack: defer allocating the append plan's write stepTaylor Blau, Oct 1, 2026
  39. 8/8 repack: include required packs in incremental MIDX writesTaylor Blau, Oct 1, 2026
  40. Jeff KingOct 2, 2026
  41. Taylor BlauOct 3, 2026

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