packfile: refactor install_packed_git() to work on packfile store

The `install_packed_git()` functions adds a packfile to a specific
object store. Refactor it to accept a packfile store instead of a
repository to clarify its scope.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: pks-t

builtin/fast-import.c

@@ -901,7 +901,7 @@ static void end_packfile(void)
 		if (!new_p)
 			die("core git rejected index %s", idx_name);
 		all_packs[pack_id] = new_p;
-		install_packed_git(the_repository, new_p);
+		packfile_store_add_pack(the_repository->objects->packfiles, new_p);
 		free(idx_name);
 
 		/* Print the boundary */

builtin/index-pack.c

@@ -1645,7 +1645,7 @@ static void final(const char *final_pack_name, const char *curr_pack_name,
 		p = add_packed_git(the_repository, final_index_name,
 				   strlen(final_index_name), 0);
 		if (p)
-			install_packed_git(the_repository, p);
+			packfile_store_add_pack(the_repository->objects->packfiles, p);
 	}
 
 	if (!from_stdin) {

http.c

@@ -2541,7 +2541,7 @@ void http_install_packfile(struct packed_git *p,
 		lst = &((*lst)->next);
 	*lst = (*lst)->next;
 
-	install_packed_git(the_repository, p);
+	packfile_store_add_pack(the_repository->objects->packfiles, p);
 }
 
 struct http_pack_request *new_http_pack_request(

http.h

@@ -210,7 +210,7 @@ int finish_http_pack_request(struct http_pack_request *preq);
 void release_http_pack_request(struct http_pack_request *preq);
 
 /*
- * Remove p from the given list, and invoke install_packed_git() on it.
+ * Remove p from the given list, and invoke packfile_store_add_pack() on it.
  *
  * This is a convenience function for users that have obtained a list of packs
  * from http_get_info_packs() and have chosen a specific pack to fetch.

midx.c

@@ -467,7 +467,7 @@ int prepare_midx_pack(struct multi_pack_index *m,
 		p = add_packed_git(r, pack_name.buf, pack_name.len,
 				   m->source->local);
 		if (p) {
-			install_packed_git(r, p);
+			packfile_store_add_pack(r->objects->packfiles, p);
 			list_add_tail(&p->mru, &r->objects->packfiles->mru);
 		}
 	}

packfile.c

@@ -779,16 +779,17 @@ struct packed_git *add_packed_git(struct repository *r, const char *path,
 	return p;
 }
 
-void install_packed_git(struct repository *r, struct packed_git *pack)
+void packfile_store_add_pack(struct packfile_store *store,
+			     struct packed_git *pack)
 {
 	if (pack->pack_fd != -1)
 		pack_open_fds++;
 
-	pack->next = r->objects->packfiles->packs;
-	r->objects->packfiles->packs = pack;
+	pack->next = store->packs;
+	store->packs = pack;
 
 	hashmap_entry_init(&pack->packmap_ent, strhash(pack->pack_name));
-	hashmap_add(&r->objects->packfiles->map, &pack->packmap_ent);
+	hashmap_add(&store->map, &pack->packmap_ent);
 }
 
 void (*report_garbage)(unsigned seen_bits, const char *path);
@@ -904,7 +905,7 @@ static void prepare_pack(const char *full_name, size_t full_name_len,
 		if (!hashmap_get(&data->r->objects->packfiles->map, &hent, pack_name)) {
 			p = add_packed_git(data->r, full_name, full_name_len, data->local);
 			if (p)
-				install_packed_git(data->r, p);
+				packfile_store_add_pack(data->r->objects->packfiles, p);
 		}
 		free(pack_name);
 	}

packfile.h

@@ -120,6 +120,13 @@ void packfile_store_close(struct packfile_store *store);
  */
 void packfile_store_reprepare(struct packfile_store *store);
 
+/*
+ * Add the pack to the store so that contained objects become accessible via
+ * the store. This moves ownership into the store.
+ */
+void packfile_store_add_pack(struct packfile_store *store,
+			     struct packed_git *pack);
+
 struct pack_window {
 	struct pack_window *next;
 	unsigned char *base;
@@ -196,8 +203,6 @@ int for_each_packed_object(struct repository *repo, each_packed_object_fn cb,
 #define PACKDIR_FILE_GARBAGE 4
 extern void (*report_garbage)(unsigned seen_bits, const char *path);
 
-void install_packed_git(struct repository *r, struct packed_git *pack);
-
 struct packed_git *get_packed_git(struct repository *r);
 struct list_head *get_packed_git_mru(struct repository *r);
 struct multi_pack_index *get_multi_pack_index(struct odb_source *source);