Merge branch 'jc/move-is-bare-repository-cfg-variable-to-repo' into seen

* jc/move-is-bare-repository-cfg-variable-to-repo:
  repository: BUG when is_bare_cfg is not initialized
  setup: initialize is_bare_cfg
  git: remove is_bare_repository_cfg global variable

attr.c

@@ -680,7 +680,7 @@ static enum git_attr_direction direction;
 
 void git_attr_set_direction(enum git_attr_direction new_direction)
 {
-	if (is_bare_repository() && new_direction != GIT_ATTR_INDEX)
+	if (repo_is_bare(the_repository) && new_direction != GIT_ATTR_INDEX)
 		BUG("non-INDEX attr direction in a bare repo");
 
 	if (new_direction != direction)
@@ -847,7 +847,7 @@ static struct attr_stack *read_attr(struct index_state *istate,
 		res = read_attr_from_index(istate, path, flags);
 	} else if (tree_oid) {
 		res = read_attr_from_blob(istate, tree_oid, path, flags);
-	} else if (!is_bare_repository()) {
+	} else if (!repo_is_bare(the_repository)) {
 		if (direction == GIT_ATTR_CHECKOUT) {
 			res = read_attr_from_index(istate, path, flags);
 			if (!res)

builtin/bisect.c

@@ -705,7 +705,7 @@ static enum bisect_error bisect_start(struct bisect_terms *terms, int argc,
 	struct object_id oid;
 	const char *head;
 
-	if (is_bare_repository())
+	if (repo_is_bare(the_repository))
 		no_checkout = 1;
 
 	/*

builtin/blame.c

@@ -1092,7 +1092,7 @@ int cmd_blame(int argc,
 
 	revs.disable_stdin = 1;
 	setup_revisions(argc, argv, &revs, NULL);
-	if (!revs.pending.nr && is_bare_repository()) {
+	if (!revs.pending.nr && repo_is_bare(the_repository)) {
 		struct commit *head_commit;
 		struct object_id head_oid;
 

builtin/check-attr.c

@@ -116,7 +116,7 @@ int cmd_check_attr(int argc,
 	struct object_id initialized_oid;
 	int cnt, i, doubledash, filei;
 
-	if (!is_bare_repository())
+	if (!repo_is_bare(the_repository))
 		setup_work_tree();
 
 	git_config(git_default_config, NULL);

builtin/clone.c

@@ -1415,7 +1415,7 @@ int cmd_clone(int argc,
 		repo_clear(the_repository);
 
 		/* At this point, we need the_repository to match the cloned repo. */
-		if (repo_init(the_repository, git_dir, work_tree))
+		if (repo_init(the_repository, git_dir, work_tree, -1))
 			warning(_("failed to initialize the repo, skipping bundle URI"));
 		else if (fetch_bundle_uri(the_repository, bundle_uri, &has_heuristic))
 			warning(_("failed to fetch objects from bundle URI '%s'"),
@@ -1446,7 +1446,7 @@ int cmd_clone(int argc,
 			repo_clear(the_repository);
 
 			/* At this point, we need the_repository to match the cloned repo. */
-			if (repo_init(the_repository, git_dir, work_tree))
+			if (repo_init(the_repository, git_dir, work_tree, -1))
 				warning(_("failed to initialize the repo, skipping bundle URI"));
 			else if (fetch_bundle_list(the_repository,
 						   transport->bundles))

builtin/fetch.c

@@ -1633,7 +1633,8 @@ static int set_head(const struct ref *remote_refs)
 	else
 		head_name = xstrdup(heads.items[0].string);
 	if (head_name) {
-		int is_bare = is_bare_repository();
+		int is_bare = repo_is_bare(the_repository);
+
 		if (is_bare) {
 			strbuf_addstr(&b_head, "HEAD");
 			strbuf_addf(&b_remote_head, "refs/heads/%s", head_name);

builtin/gc.c

@@ -718,7 +718,7 @@ struct repository *repo UNUSED)
 		die(_("failed to parse gc.logExpiry value %s"), cfg.gc_log_expire);
 
 	if (cfg.pack_refs < 0)
-		cfg.pack_refs = !is_bare_repository();
+		cfg.pack_refs = !repo_is_bare(the_repository);
 
 	argc = parse_options(argc, argv, prefix, builtin_gc_options,
 			     builtin_gc_usage, 0);

builtin/init-db.c

@@ -91,7 +91,7 @@ int cmd_init_db(int argc,
 	const struct option init_db_options[] = {
 		OPT_STRING(0, "template", &template_dir, N_("template-directory"),
 				N_("directory from which templates will be used")),
-		OPT_SET_INT(0, "bare", &is_bare_repository_cfg,
+		OPT_SET_INT(0, "bare", &the_repository->is_bare_cfg,
 				N_("create a bare repository"), 1),
 		{ OPTION_CALLBACK, 0, "shared", &init_shared_repository,
 			N_("permissions"),
@@ -112,7 +112,7 @@ int cmd_init_db(int argc,
 
 	argc = parse_options(argc, argv, prefix, init_db_options, init_db_usage, 0);
 
-	if (real_git_dir && is_bare_repository_cfg == 1)
+	if (real_git_dir && the_repository->is_bare_cfg == 1)
 		die(_("options '%s' and '%s' cannot be used together"), "--separate-git-dir", "--bare");
 
 	if (real_git_dir && !is_absolute_path(real_git_dir))
@@ -156,7 +156,7 @@ int cmd_init_db(int argc,
 	} else if (0 < argc) {
 		usage(init_db_usage[0]);
 	}
-	if (is_bare_repository_cfg == 1) {
+	if (the_repository->is_bare_cfg == 1) {
 		char *cwd = xgetcwd();
 		setenv(GIT_DIR_ENVIRONMENT, cwd, argc > 0);
 		free(cwd);
@@ -183,7 +183,7 @@ int cmd_init_db(int argc,
 	 */
 	git_dir = xstrdup_or_null(getenv(GIT_DIR_ENVIRONMENT));
 	work_tree = xstrdup_or_null(getenv(GIT_WORK_TREE_ENVIRONMENT));
-	if ((!git_dir || is_bare_repository_cfg == 1) && work_tree)
+	if ((!git_dir || the_repository->is_bare_cfg == 1) && work_tree)
 		die(_("%s (or --work-tree=<directory>) not allowed without "
 			  "specifying %s (or --git-dir=<directory>)"),
 		    GIT_WORK_TREE_ENVIRONMENT,
@@ -220,10 +220,10 @@ int cmd_init_db(int argc,
 		strbuf_release(&sb);
 	}
 
-	if (is_bare_repository_cfg < 0)
-		is_bare_repository_cfg = guess_repository_type(git_dir);
+	if (the_repository->is_bare_cfg < 0)
+		the_repository->is_bare_cfg = guess_repository_type(git_dir);
 
-	if (!is_bare_repository_cfg) {
+	if (!the_repository->is_bare_cfg) {
 		const char *git_dir_parent = strrchr(git_dir, '/');
 		if (git_dir_parent) {
 			char *rel = xstrndup(git_dir, git_dir_parent - git_dir);

builtin/repack.c

@@ -1273,7 +1273,7 @@ int cmd_repack(int argc,
 
 	if (write_bitmaps < 0) {
 		if (!write_midx &&
-		    (!(pack_everything & ALL_INTO_ONE) || !is_bare_repository()))
+		    (!(pack_everything & ALL_INTO_ONE) || !repo_is_bare(the_repository)))
 			write_bitmaps = 0;
 	}
 	if (pack_kept_objects < 0)

builtin/reset.c

@@ -448,7 +448,7 @@ int cmd_reset(int argc,
 	if (reset_type != SOFT && (reset_type != MIXED || repo_get_work_tree(the_repository)))
 		setup_work_tree();
 
-	if (reset_type == MIXED && is_bare_repository())
+	if (reset_type == MIXED && repo_is_bare(the_repository))
 		die(_("%s reset is not allowed in a bare repository"),
 		    _(reset_type_names[reset_type]));
 

builtin/rev-parse.c

@@ -1063,7 +1063,7 @@ int cmd_rev_parse(int argc,
 				continue;
 			}
 			if (!strcmp(arg, "--is-bare-repository")) {
-				printf("%s\n", is_bare_repository() ? "true"
+				printf("%s\n", repo_is_bare(the_repository) ? "true"
 						: "false");
 				continue;
 			}

builtin/submodule--helper.c

@@ -1591,7 +1591,7 @@ static int add_possible_reference_from_superproject(
 		struct strbuf err = STRBUF_INIT;
 		strbuf_add(&sb, odb->path, len);
 
-		if (repo_init(&alternate, sb.buf, NULL) < 0)
+		if (repo_init(&alternate, sb.buf, NULL, the_repository->is_bare_cfg) < 0)
 			die(_("could not get a repository handle for gitdir '%s'"),
 			    sb.buf);
 

config.c

@@ -1542,7 +1542,7 @@ static int git_default_core_config(const char *var, const char *value,
 	}
 
 	if (!strcmp(var, "core.bare")) {
-		is_bare_repository_cfg = git_config_bool(var, value);
+		the_repository->is_bare_cfg = git_config_bool(var, value);
 		return 0;
 	}
 

dir.c

@@ -4016,7 +4016,7 @@ static void connect_wt_gitdir_in_nested(const char *sub_worktree,
 	const struct submodule *sub;
 
 	/* If the submodule has no working tree, we can ignore it. */
-	if (repo_init(&subrepo, sub_gitdir, sub_worktree))
+	if (repo_init(&subrepo, sub_gitdir, sub_worktree, the_repository->is_bare_cfg))
 		return;
 
 	if (repo_read_index(&subrepo) < 0)

environment.c

@@ -34,7 +34,6 @@ int has_symlinks = 1;
 int minimum_abbrev = 4, default_abbrev = -1;
 int ignore_case;
 int assume_unchanged;
-int is_bare_repository_cfg = -1; /* unspecified */
 int warn_on_object_refname_ambiguity = 1;
 int repository_format_precious_objects;
 char *git_commit_encoding;
@@ -143,12 +142,6 @@ const char *getenv_safe(struct strvec *argv, const char *name)
 	return argv->v[argv->nr - 1];
 }
 
-int is_bare_repository(void)
-{
-	/* if core.bare is not 'false', let's see if there is a work tree */
-	return is_bare_repository_cfg && !repo_get_work_tree(the_repository);
-}
-
 int have_git_dir(void)
 {
 	return startup_info->have_repository

environment.h

@@ -144,8 +144,7 @@ void set_shared_repository(int value);
 int get_shared_repository(void);
 void reset_shared_repository(void);
 
-extern int is_bare_repository_cfg;
-int is_bare_repository(void);
+int is_bare_repository(struct repository *repo);
 extern char *git_work_tree_cfg;
 
 /* Environment bits from configuration mechanism */

git.c

@@ -251,7 +251,7 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
 				*envchanged = 1;
 		} else if (!strcmp(cmd, "--bare")) {
 			char *cwd = xgetcwd();
-			is_bare_repository_cfg = 1;
+			the_repository->is_bare_cfg = 1;
 			setenv(GIT_DIR_ENVIRONMENT, cwd, 0);
 			free(cwd);
 			setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, "0", 1);

mailmap.c

@@ -216,10 +216,10 @@ int read_mailmap(struct string_list *map)
 	map->strdup_strings = 1;
 	map->cmp = namemap_cmp;
 
-	if (!git_mailmap_blob && is_bare_repository())
+	if (!git_mailmap_blob && repo_is_bare(the_repository))
 		git_mailmap_blob = xstrdup("HEAD:.mailmap");
 
-	if (!startup_info->have_repository || !is_bare_repository())
+	if (!startup_info->have_repository || !repo_is_bare(the_repository))
 		err |= read_mailmap_file(map, ".mailmap",
 					 startup_info->have_repository ?
 					 MAILMAP_NOFOLLOW : 0);

refs/files-backend.c

@@ -1785,7 +1785,7 @@ static int log_ref_setup(struct files_ref_store *refs,
 	char *logfile;
 
 	if (log_refs_cfg == LOG_REFS_UNSET)
-		log_refs_cfg = is_bare_repository() ? LOG_REFS_NONE : LOG_REFS_NORMAL;
+		log_refs_cfg = repo_is_bare(refs->base.repo) ? LOG_REFS_NONE : LOG_REFS_NORMAL;
 
 	files_reflog_path(refs, &logfile_sb, refname);
 	logfile = strbuf_detach(&logfile_sb, NULL);

refs/reftable-backend.c

@@ -271,7 +271,7 @@ static int should_write_log(struct reftable_ref_store *refs, const char *refname
 {
 	enum log_refs_config log_refs_cfg = refs->log_all_ref_updates;
 	if (log_refs_cfg == LOG_REFS_UNSET)
-		log_refs_cfg = is_bare_repository() ? LOG_REFS_NONE : LOG_REFS_NORMAL;
+		log_refs_cfg = repo_is_bare(refs->base.repo) ? LOG_REFS_NONE : LOG_REFS_NORMAL;
 
 	switch (log_refs_cfg) {
 	case LOG_REFS_NONE:

repository.c

@@ -25,7 +25,9 @@
 extern struct repository *the_repository;
 
 /* The main repository */
-static struct repository the_repo;
+static struct repository the_repo = {
+	.is_bare_cfg = -1,
+};
 struct repository *the_repository = &the_repo;
 
 /*
@@ -263,10 +265,13 @@ static int read_and_verify_repository_format(struct repository_format *format,
 /*
  * Initialize 'repo' based on the provided 'gitdir'.
  * Return 0 upon success and a non-zero value upon failure.
+ * is_bare can be passed to indicate whether or not the repository should be
+ * treated as bare when repo_init() is used to initiate a secondary repository.
  */
 int repo_init(struct repository *repo,
 	      const char *gitdir,
-	      const char *worktree)
+	      const char *worktree,
+	      int is_bare)
 {
 	struct repository_format format = REPOSITORY_FORMAT_INIT;
 	memset(repo, 0, sizeof(*repo));
@@ -284,6 +289,8 @@ int repo_init(struct repository *repo,
 	repo_set_ref_storage_format(repo, format.ref_storage_format);
 	repo->repository_format_worktree_config = format.worktree_config;
 	repo->repository_format_relative_worktrees = format.relative_worktrees;
+	if (is_bare > 0)
+		repo->is_bare_cfg = is_bare;
 
 	/* take ownership of format.partial_clone */
 	repo->repository_format_partial_clone = format.partial_clone;
@@ -315,7 +322,7 @@ int repo_submodule_init(struct repository *subrepo,
 	strbuf_repo_worktree_path(&gitdir, superproject, "%s/.git", path);
 	strbuf_repo_worktree_path(&worktree, superproject, "%s", path);
 
-	if (repo_init(subrepo, gitdir.buf, worktree.buf)) {
+	if (repo_init(subrepo, gitdir.buf, worktree.buf, superproject->is_bare_cfg)) {
 		/*
 		 * If initialization fails then it may be due to the submodule
 		 * not being populated in the superproject's worktree.  Instead
@@ -333,7 +340,7 @@ int repo_submodule_init(struct repository *subrepo,
 		strbuf_reset(&gitdir);
 		submodule_name_to_gitdir(&gitdir, superproject, sub->name);
 
-		if (repo_init(subrepo, gitdir.buf, NULL)) {
+		if (repo_init(subrepo, gitdir.buf, NULL, superproject->is_bare_cfg)) {
 			ret = -1;
 			goto out;
 		}
@@ -454,3 +461,11 @@ int repo_hold_locked_index(struct repository *repo,
 		BUG("the repo hasn't been setup");
 	return hold_lock_file_for_update(lf, repo->index_file, flags);
 }
+
+int repo_is_bare(struct repository *repo)
+{
+	/* if core.bare is not 'false', let's see if there is a work tree */
+	if (repo->is_bare_cfg < 0 )
+		BUG("is_bare_cfg unspecified");
+	return repo->is_bare_cfg && !repo_get_work_tree(repo);
+}

repository.h

@@ -154,6 +154,14 @@ struct repository {
 
 	/* Indicate if a repository has a different 'commondir' from 'gitdir' */
 	unsigned different_commondir:1;
+
+	/*
+	 * Indicates if the repository is set to be treated as a bare repository,
+	 * through a command line argument, configuration, or environment
+	 * variable.
+	 * -1 means unspecified, 0 indicates non-bare, and 1 indicates bare.
+	 */
+	int is_bare_cfg;
 };
 
 #ifdef USE_THE_REPOSITORY_VARIABLE
@@ -189,7 +197,7 @@ void repo_set_ref_storage_format(struct repository *repo,
 				 enum ref_storage_format format);
 void initialize_repository(struct repository *repo);
 RESULT_MUST_BE_USED
-int repo_init(struct repository *r, const char *gitdir, const char *worktree);
+int repo_init(struct repository *r, const char *gitdir, const char *worktree, int is_bare);
 
 /*
  * Initialize the repository 'subrepo' as the submodule at the given path. If
@@ -233,4 +241,6 @@ void repo_update_index_if_able(struct repository *, struct lock_file *);
  */
 int upgrade_repository_format(int target_version);
 
+int repo_is_bare(struct repository *repo);
+
 #endif /* REPOSITORY_H */

scalar.c

@@ -722,7 +722,7 @@ static int cmd_reconfigure(int argc, const char **argv)
 
 		git_config_clear();
 
-		if (repo_init(&r, gitdir.buf, commondir.buf))
+		if (repo_init(&r, gitdir.buf, commondir.buf, the_repository->is_bare_cfg))
 			goto loop_end;
 
 		old_repo = the_repository;