[v2,5/5] pack-write: pass hash_algo to internal functions

Commit Message

Karthik Nayak Jan. 17, 2025, 9:20 a.m. UTC

The internal functions `write_rev_trailer()`, `write_rev_trailer()`,
`write_mtimes_header()` and write_mtimes_trailer()` use the global
`the_hash_algo` variable to access the repository's hash function. Pass
the hash from down as we've added made them available in the previous
few commits.

This removes all global variables from the 'pack-write.c' file, so
remove the 'USE_THE_REPOSITORY_VARIABLE' macro.

Signed-off-by: Karthik Nayak <[e-mail]>
---
 pack-write.c | 30 ++++++++++++++++--------------
 1 file changed, 16 insertions(+), 14 deletions(-)

Comments

Patrick Steinhardt Jan. 17, 2025, 9:46 a.m. UTC | #1

On Fri, Jan 17, 2025 at 10:20:52AM +0100, Karthik Nayak wrote:
> The internal functions `write_rev_trailer()`, `write_rev_trailer()`,
> `write_mtimes_header()` and write_mtimes_trailer()` use the global
> `the_hash_algo` variable to access the repository's hash function. Pass
> the hash from down as we've added made them available in the previous

This doesn't read quite right -- from where do we want to pass it down?
Other than that the series looks good to me, thanks!

Patrick

Karthik Nayak Jan. 17, 2025, 9:55 a.m. UTC | #2

Patrick Steinhardt <[e-mail]> writes:

> On Fri, Jan 17, 2025 at 10:20:52AM +0100, Karthik Nayak wrote:
>> The internal functions `write_rev_trailer()`, `write_rev_trailer()`,
>> `write_mtimes_header()` and write_mtimes_trailer()` use the global
>> `the_hash_algo` variable to access the repository's hash function. Pass
>> the hash from down as we've added made them available in the previous
>
> This doesn't read quite right -- from where do we want to pass it down?
> Other than that the series looks good to me, thanks!
>

I should have s/from//, but let me rephrase it to make it clearer.

Thanks for the review.

> Patrick

Patch

diff --git a/pack-write.c b/pack-write.c
index 09ecbcdb069cc9b0383295798ceb49cbdc632b64..a2faeb1895e41f4c17281380478f1f2cabcc6f24 100644
--- a/pack-write.c
+++ b/pack-write.c
@@ -1,5 +1,3 @@ 
-#define USE_THE_REPOSITORY_VARIABLE
-
 #include "git-compat-util.h"
 #include "environment.h"
 #include "gettext.h"
@@ -211,9 +209,10 @@  static void write_rev_index_positions(struct hashfile *f,
 		hashwrite_be32(f, pack_order[i]);
 }
 
-static void write_rev_trailer(struct hashfile *f, const unsigned char *hash)
+static void write_rev_trailer(const struct git_hash_algo *hash_algo,
+			      struct hashfile *f, const unsigned char *hash)
 {
-	hashwrite(f, hash, the_hash_algo->rawsz);
+	hashwrite(f, hash, hash_algo->rawsz);
 }
 
 char *write_rev_file(const struct git_hash_algo *hash_algo,
@@ -286,7 +285,7 @@  char *write_rev_file_order(const struct git_hash_algo *hash_algo,
 	write_rev_header(hash_algo, f);
 
 	write_rev_index_positions(f, pack_order, nr_objects);
-	write_rev_trailer(f, hash);
+	write_rev_trailer(hash_algo, f, hash);
 
 	if (adjust_shared_perm(path) < 0)
 		die(_("failed to make %s readable"), path);
@@ -298,11 +297,12 @@  char *write_rev_file_order(const struct git_hash_algo *hash_algo,
 	return path;
 }
 
-static void write_mtimes_header(struct hashfile *f)
+static void write_mtimes_header(const struct git_hash_algo *hash_algo,
+				struct hashfile *f)
 {
 	hashwrite_be32(f, MTIMES_SIGNATURE);
 	hashwrite_be32(f, MTIMES_VERSION);
-	hashwrite_be32(f, oid_version(the_hash_algo));
+	hashwrite_be32(f, oid_version(hash_algo));
 }
 
 /*
@@ -322,12 +322,14 @@  static void write_mtimes_objects(struct hashfile *f,
 	}
 }
 
-static void write_mtimes_trailer(struct hashfile *f, const unsigned char *hash)
+static void write_mtimes_trailer(const struct git_hash_algo *hash_algo,
+				 struct hashfile *f, const unsigned char *hash)
 {
-	hashwrite(f, hash, the_hash_algo->rawsz);
+	hashwrite(f, hash, hash_algo->rawsz);
 }
 
-static char *write_mtimes_file(struct packing_data *to_pack,
+static char *write_mtimes_file(const struct git_hash_algo *hash_algo,
+			       struct packing_data *to_pack,
 			       struct pack_idx_entry **objects,
 			       uint32_t nr_objects,
 			       const unsigned char *hash)
@@ -344,9 +346,9 @@  static char *write_mtimes_file(struct packing_data *to_pack,
 	mtimes_name = strbuf_detach(&tmp_file, NULL);
 	f = hashfd(fd, mtimes_name);
 
-	write_mtimes_header(f);
+	write_mtimes_header(hash_algo, f);
 	write_mtimes_objects(f, to_pack, objects, nr_objects);
-	write_mtimes_trailer(f, hash);
+	write_mtimes_trailer(hash_algo, f, hash);
 
 	if (adjust_shared_perm(mtimes_name) < 0)
 		die(_("failed to make %s readable"), mtimes_name);
@@ -575,8 +577,8 @@  void stage_tmp_packfiles(const struct git_hash_algo *hash_algo,
 				      hash, pack_idx_opts->flags);
 
 	if (pack_idx_opts->flags & WRITE_MTIMES) {
-		mtimes_tmp_name = write_mtimes_file(to_pack, written_list,
-						    nr_written,
+		mtimes_tmp_name = write_mtimes_file(hash_algo, to_pack,
+						    written_list, nr_written,
 						    hash);
 	}