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[PATCH 02/19] object-file: stop using `the_hash_algo`

From
Patrick Steinhardt <ps@pks.im>
Date
Jul 9, 2025, 11:17 UTC
Message-ID
<20250709-pks-object-file-wo-the-repository-v1-2-62627b55707f@pks.im>
In-Reply-To
<20250709-pks-object-file-wo-the-repository-v1-0-62627b55707f@pks.im>

There are a couple of users of the `the_hash_algo` macro, which implicitly depends on `the_repository`. Adapt these callers to not do so anymore, either by deriving it from already-available context or by using `the_repository->hash_algo`. The latter variant doesn't yet help to remove the global dependency, but such users will be adapted in the following commits to not use `the_repository` anymore, either.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
---
 object-file.c | 40 ++++++++++++++++++++++++----------------
 object-file.h |  1 +
 2 files changed, 25 insertions(+), 16 deletions(-)
diff --git a/object-file.c b/object-file.c
index 987cf289420..bc395febc9d 100644
--- a/object-file.c
+++ b/object-file.c
@@ -25,6 +25,7 @@
 #include "pack.h"
 #include "packfile.h"
 #include "path.h"
+#include "read-cache-ll.h"
 #include "setup.h"
 #include "streaming.h"
 
@@ -41,9 +42,11 @@ static int get_conv_flags(unsigned flags)
 		return 0;
 }
 
-static void fill_loose_path(struct strbuf *buf, const struct object_id *oid)
+static void fill_loose_path(struct strbuf *buf,
+			    const struct object_id *oid,
+			    const struct git_hash_algo *algop)
 {
-	for (size_t i = 0; i < the_hash_algo->rawsz; i++) {
+	for (size_t i = 0; i < algop->rawsz; i++) {
 		static char hex[] = "0123456789abcdef";
 		unsigned int val = oid->hash[i];
 		strbuf_addch(buf, hex[val >> 4]);
@@ -60,7 +63,7 @@ const char *odb_loose_path(struct odb_source *source,
 	strbuf_reset(buf);
 	strbuf_addstr(buf, source->path);
 	strbuf_addch(buf, '/');
-	fill_loose_path(buf, oid);
+	fill_loose_path(buf, oid, source->odb->repo->hash_algo);
 	return buf->buf;
 }
 
@@ -1165,7 +1168,7 @@ static int index_mem(struct index_state *istate,
 
 		opts.strict = 1;
 		opts.error_func = hash_format_check_report;
-		if (fsck_buffer(null_oid(the_hash_algo), type, buf, size, &opts))
+		if (fsck_buffer(null_oid(istate->repo->hash_algo), type, buf, size, &opts))
 			die(_("refusing to create malformed object"));
 		fsck_finish(&opts);
 	}
@@ -1173,7 +1176,7 @@ static int index_mem(struct index_state *istate,
 	if (write_object)
 		ret = write_object_file(buf, size, type, oid);
 	else
-		hash_object_file(the_hash_algo, buf, size, type, oid);
+		hash_object_file(istate->repo->hash_algo, buf, size, type, oid);
 
 	strbuf_release(&nbuf);
 	return ret;
@@ -1199,7 +1202,7 @@ static int index_stream_convert_blob(struct index_state *istate,
 		ret = write_object_file(sbuf.buf, sbuf.len, OBJ_BLOB,
 					oid);
 	else
-		hash_object_file(the_hash_algo, sbuf.buf, sbuf.len, OBJ_BLOB,
+		hash_object_file(istate->repo->hash_algo, sbuf.buf, sbuf.len, OBJ_BLOB,
 				 oid);
 	strbuf_release(&sbuf);
 	return ret;
@@ -1297,7 +1300,7 @@ int index_path(struct index_state *istate, struct object_id *oid,
 		if (strbuf_readlink(&sb, path, st->st_size))
 			return error_errno("readlink(\"%s\")", path);
 		if (!(flags & INDEX_WRITE_OBJECT))
-			hash_object_file(the_hash_algo, sb.buf, sb.len,
+			hash_object_file(istate->repo->hash_algo, sb.buf, sb.len,
 					 OBJ_BLOB, oid);
 		else if (write_object_file(sb.buf, sb.len, OBJ_BLOB, oid))
 			rc = error(_("%s: failed to insert into database"), path);
@@ -1328,6 +1331,7 @@ int read_pack_header(int fd, struct pack_header *header)
 
 int for_each_file_in_obj_subdir(unsigned int subdir_nr,
 				struct strbuf *path,
+				const struct git_hash_algo *algop,
 				each_loose_object_fn obj_cb,
 				each_loose_cruft_fn cruft_cb,
 				each_loose_subdir_fn subdir_cb,
@@ -1364,12 +1368,12 @@ int for_each_file_in_obj_subdir(unsigned int subdir_nr,
 		namelen = strlen(de->d_name);
 		strbuf_setlen(path, baselen);
 		strbuf_add(path, de->d_name, namelen);
-		if (namelen == the_hash_algo->hexsz - 2 &&
+		if (namelen == algop->hexsz - 2 &&
 		    !hex_to_bytes(oid.hash + 1, de->d_name,
-				  the_hash_algo->rawsz - 1)) {
-			oid_set_algo(&oid, the_hash_algo);
-			memset(oid.hash + the_hash_algo->rawsz, 0,
-			       GIT_MAX_RAWSZ - the_hash_algo->rawsz);
+				  algop->rawsz - 1)) {
+			oid_set_algo(&oid, algop);
+			memset(oid.hash + algop->rawsz, 0,
+			       GIT_MAX_RAWSZ - algop->rawsz);
 			if (obj_cb) {
 				r = obj_cb(&oid, path->buf, data);
 				if (r)
@@ -1405,7 +1409,8 @@ int for_each_loose_file_in_objdir_buf(struct strbuf *path,
 	int i;
 
 	for (i = 0; i < 256; i++) {
-		r = for_each_file_in_obj_subdir(i, path, obj_cb, cruft_cb,
+		r = for_each_file_in_obj_subdir(i, path, the_repository->hash_algo,
+						obj_cb, cruft_cb,
 						subdir_cb, data);
 		if (r)
 			break;
@@ -1481,6 +1486,7 @@ struct oidtree *odb_loose_cache(struct odb_source *source,
 	}
 	strbuf_addstr(&buf, source->path);
 	for_each_file_in_obj_subdir(subdir_nr, &buf,
+				    source->odb->repo->hash_algo,
 				    append_loose_object,
 				    NULL, NULL,
 				    source->loose_objects_cache);
@@ -1501,7 +1507,8 @@ static int check_stream_oid(git_zstream *stream,
 			    const char *hdr,
 			    unsigned long size,
 			    const char *path,
-			    const struct object_id *expected_oid)
+			    const struct object_id *expected_oid,
+			    const struct git_hash_algo *algop)
 {
 	struct git_hash_ctx c;
 	struct object_id real_oid;
@@ -1509,7 +1516,7 @@ static int check_stream_oid(git_zstream *stream,
 	unsigned long total_read;
 	int status = Z_OK;
 
-	the_hash_algo->init_fn(&c);
+	algop->init_fn(&c);
 	git_hash_update(&c, hdr, stream->total_out);
 
 	/*
@@ -1594,7 +1601,8 @@ int read_loose_object(const char *path,
 
 	if (*oi->typep == OBJ_BLOB &&
 	    *size > repo_settings_get_big_file_threshold(the_repository)) {
-		if (check_stream_oid(&stream, hdr, *size, path, expected_oid) < 0)
+		if (check_stream_oid(&stream, hdr, *size, path, expected_oid,
+				     the_repository->hash_algo) < 0)
 			goto out_inflate;
 	} else {
 		*contents = unpack_loose_rest(&stream, hdr, *size, expected_oid);
diff --git a/object-file.h b/object-file.h
index 67b4ffc4808..222ff2871a1 100644
--- a/object-file.h
+++ b/object-file.h
@@ -89,6 +89,7 @@ typedef int each_loose_subdir_fn(unsigned int nr,
 				 void *data);
 int for_each_file_in_obj_subdir(unsigned int subdir_nr,
 				struct strbuf *path,
+				const struct git_hash_algo *algo,
 				each_loose_object_fn obj_cb,
 				each_loose_cruft_fn cruft_cb,
 				each_loose_subdir_fn subdir_cb,
-- 
2.50.1.327.g047016eb4a.dirty
Previous: Patrick SteinhardtNext: Karthik Nayak
Message 3 of 60 in “object-file: get rid of `the_repository`”
  1. 00/19 object-file: get rid of `the_repository`Patrick Steinhardt, Jul 9, 2025
  2. 01/19 object-file: fix -Wsign-compare warningsPatrick Steinhardt, Jul 9, 2025
  3. 02/19 object-file: stop using `the_hash_algo`Patrick Steinhardt, Jul 9, 2025
  4. Karthik NayakJul 11, 2025
  5. 03/19 object-file: get rid of `the_repository` in `has_loose_object()`Patrick Steinhardt, Jul 9, 2025
  6. 04/19 object-file: inline `check_and_freshen()` functionsPatrick Steinhardt, Jul 9, 2025
  7. 05/19 object-file: get rid of `the_repository` when freshening objectsPatrick Steinhardt, Jul 9, 2025
  8. Karthik NayakJul 11, 2025
  9. 06/19 object-file: get rid of `the_repository` in `loose_object_info()`Patrick Steinhardt, Jul 9, 2025
  10. 07/19 object-file: get rid of `the_repository` in `finalize_object_file()`Patrick Steinhardt, Jul 9, 2025
  11. 08/19 loose: write loose objects map via their sourcePatrick Steinhardt, Jul 9, 2025
  12. Karthik NayakJul 11, 2025
  13. Patrick SteinhardtJul 15, 2025
  14. 09/19 odb: introduce `odb_write_object()`Patrick Steinhardt, Jul 9, 2025
  15. Toon ClaesJul 10, 2025
  16. Patrick SteinhardtJul 15, 2025
  17. 10/19 object-file: get rid of `the_repository` when writing objectsPatrick Steinhardt, Jul 9, 2025
  18. 11/19 object-file: inline `for_each_loose_file_in_objdir_buf()`Patrick Steinhardt, Jul 9, 2025
  19. 12/19 object-file: remove declaration for `for_each_file_in_obj_subdir()`Patrick Steinhardt, Jul 9, 2025
  20. 13/19 object-file: get rid of `the_repository` in loose object iteratorsPatrick Steinhardt, Jul 9, 2025
  21. Toon ClaesJul 10, 2025
  22. 14/19 object-file: get rid of `the_repository` in `read_loose_object()`Patrick Steinhardt, Jul 9, 2025
  23. 15/19 object-file: get rid of `the_repository` in `force_object_loose()`Patrick Steinhardt, Jul 9, 2025
  24. Toon ClaesJul 10, 2025
  25. Karthik NayakJul 11, 2025
  26. Patrick SteinhardtJul 15, 2025
  27. Toon ClaesJul 15, 2025
  28. 16/19 object-file: get rid of `the_repository` in index-related functionsPatrick Steinhardt, Jul 9, 2025
  29. 17/19 environment: move compression level into repo settingsPatrick Steinhardt, Jul 9, 2025
  30. Phillip WoodJul 9, 2025
  31. Junio C HamanoJul 11, 2025
  32. Patrick SteinhardtJul 15, 2025
  33. Patrick SteinhardtJul 15, 2025
  34. Phillip WoodJul 15, 2025
  35. Patrick SteinhardtJul 15, 2025
  36. Patrick SteinhardtJul 16, 2025
  37. Phillip WoodJul 17, 2025
  38. Junio C HamanoJul 17, 2025
  39. Junio C HamanoJul 15, 2025
  40. Ayush ChandekarJul 17, 2025
  41. 18/19 environment: move object creation mode into repo settingsPatrick Steinhardt, Jul 9, 2025
  42. 19/19 object-file: drop USE_THE_REPOSITORY_VARIABLEPatrick Steinhardt, Jul 9, 2025
  43. 00/16 object-file: get rid of `the_repository`Patrick Steinhardt, Jul 17, 2025
  44. 01/16 object-file: fix -Wsign-compare warningsPatrick Steinhardt, Jul 17, 2025
  45. Jeff KingApr 5, 2026
  46. 02/16 object-file: stop using `the_hash_algo`Patrick Steinhardt, Jul 17, 2025
  47. 03/16 object-file: get rid of `the_repository` in `has_loose_object()`Patrick Steinhardt, Jul 17, 2025
  48. 04/16 object-file: inline `check_and_freshen()` functionsPatrick Steinhardt, Jul 17, 2025
  49. 05/16 object-file: get rid of `the_repository` when freshening objectsPatrick Steinhardt, Jul 17, 2025
  50. 06/16 object-file: get rid of `the_repository` in `loose_object_info()`Patrick Steinhardt, Jul 17, 2025
  51. 07/16 object-file: get rid of `the_repository` in `finalize_object_file()`Patrick Steinhardt, Jul 17, 2025
  52. 08/16 loose: write loose objects map via their sourcePatrick Steinhardt, Jul 17, 2025
  53. 09/16 odb: introduce `odb_write_object()`Patrick Steinhardt, Jul 17, 2025
  54. 10/16 object-file: get rid of `the_repository` when writing objectsPatrick Steinhardt, Jul 17, 2025
  55. 11/16 object-file: inline `for_each_loose_file_in_objdir_buf()`Patrick Steinhardt, Jul 17, 2025
  56. 12/16 object-file: remove declaration for `for_each_file_in_obj_subdir()`Patrick Steinhardt, Jul 17, 2025
  57. 13/16 object-file: get rid of `the_repository` in loose object iteratorsPatrick Steinhardt, Jul 17, 2025
  58. 14/16 object-file: get rid of `the_repository` in `read_loose_object()`Patrick Steinhardt, Jul 17, 2025
  59. 15/16 object-file: get rid of `the_repository` in `force_object_loose()`Patrick Steinhardt, Jul 17, 2025
  60. 16/16 object-file: get rid of `the_repository` in index-related functionsPatrick Steinhardt, Jul 17, 2025

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