Merge branch 'hn/refs-debug-update'

Debugging support for refs API.

* hn/refs-debug-update:
  refs: centralize initialization of the base ref_store.
  refs: print error message in debug output
  refs: pass gitdir to packed_ref_store_create

refs.c

@@ -2007,10 +2007,12 @@ struct ref_store *get_worktree_ref_store(const struct worktree *wt)
 	return refs;
 }
 
-void base_ref_store_init(struct ref_store *refs,
-			 const struct ref_storage_be *be)
+void base_ref_store_init(struct ref_store *refs, struct repository *repo,
+			 const char *path, const struct ref_storage_be *be)
 {
 	refs->be = be;
+	refs->repo = repo;
+	refs->gitdir = xstrdup(path);
 }
 
 /* backend functions */

refs/debug.c

@@ -26,7 +26,8 @@ struct ref_store *maybe_debug_wrap_ref_store(const char *gitdir, struct ref_stor
 	be_copy->name = store->be->name;
 	trace_printf_key(&trace_refs, "ref_store for %s\n", gitdir);
 	res->refs = store;
-	base_ref_store_init((struct ref_store *)res, be_copy);
+	base_ref_store_init((struct ref_store *)res, store->repo, gitdir,
+			    be_copy);
 	return (struct ref_store *)res;
 }
 
@@ -47,7 +48,8 @@ static int debug_transaction_prepare(struct ref_store *refs,
 	transaction->ref_store = drefs->refs;
 	res = drefs->refs->be->transaction_prepare(drefs->refs, transaction,
 						   err);
-	trace_printf_key(&trace_refs, "transaction_prepare: %d\n", res);
+	trace_printf_key(&trace_refs, "transaction_prepare: %d \"%s\"\n", res,
+			 err->buf);
 	return res;
 }
 

refs/files-backend.c

@@ -86,16 +86,12 @@ static struct ref_store *files_ref_store_create(struct repository *repo,
 	struct ref_store *ref_store = (struct ref_store *)refs;
 	struct strbuf sb = STRBUF_INIT;
 
-	ref_store->repo = repo;
-	ref_store->gitdir = xstrdup(gitdir);
-	base_ref_store_init(ref_store, &refs_be_files);
+	base_ref_store_init(ref_store, repo, gitdir, &refs_be_files);
 	refs->store_flags = flags;
-
 	get_common_dir_noenv(&sb, gitdir);
 	refs->gitcommondir = strbuf_detach(&sb, NULL);
-	strbuf_addf(&sb, "%s/packed-refs", refs->gitcommondir);
-	refs->packed_ref_store = packed_ref_store_create(repo, sb.buf, flags);
-	strbuf_release(&sb);
+	refs->packed_ref_store =
+		packed_ref_store_create(repo, refs->gitcommondir, flags);
 
 	chdir_notify_reparent("files-backend $GIT_DIR", &refs->base.gitdir);
 	chdir_notify_reparent("files-backend $GIT_COMMONDIR",

refs/packed-backend.c

@@ -194,20 +194,19 @@ static int release_snapshot(struct snapshot *snapshot)
 }
 
 struct ref_store *packed_ref_store_create(struct repository *repo,
-					  const char *path,
+					  const char *gitdir,
 					  unsigned int store_flags)
 {
 	struct packed_ref_store *refs = xcalloc(1, sizeof(*refs));
 	struct ref_store *ref_store = (struct ref_store *)refs;
+	struct strbuf sb = STRBUF_INIT;
 
-	base_ref_store_init(ref_store, &refs_be_packed);
-	ref_store->repo = repo;
-	ref_store->gitdir = xstrdup(path);
+	base_ref_store_init(ref_store, repo, gitdir, &refs_be_packed);
 	refs->store_flags = store_flags;
 
-	refs->path = xstrdup(path);
+	strbuf_addf(&sb, "%s/packed-refs", gitdir);
+	refs->path = strbuf_detach(&sb, NULL);
 	chdir_notify_reparent("packed-refs", &refs->path);
-
 	return ref_store;
 }
 

refs/packed-backend.h

@@ -14,7 +14,7 @@ struct ref_transaction;
  */
 
 struct ref_store *packed_ref_store_create(struct repository *repo,
-					  const char *path,
+					  const char *gitdir,
 					  unsigned int store_flags);
 
 /*

refs/refs-internal.h

@@ -710,8 +710,8 @@ int parse_loose_ref_contents(const char *buf, struct object_id *oid,
  * Fill in the generic part of refs and add it to our collection of
  * reference stores.
  */
-void base_ref_store_init(struct ref_store *refs,
-			 const struct ref_storage_be *be);
+void base_ref_store_init(struct ref_store *refs, struct repository *repo,
+			 const char *path, const struct ref_storage_be *be);
 
 /*
  * Support GIT_TRACE_REFS by optionally wrapping the given ref_store instance.