Function status_submodule

builtin/submodule--helper.c:745–843

}

static void status_submodule(const char *path, const struct object_id *ce_oid,
			     unsigned int ce_flags, const char *prefix,
			     const char *super_prefix, unsigned int flags)
{
	char *displaypath;
	struct strvec diff_files_args = STRVEC_INIT;
	struct rev_info rev = REV_INFO_INIT;
	struct strbuf buf = STRBUF_INIT;
	const char *git_dir;

	if (validate_submodule_path(path) < 0)
		die(NULL);

	if (!submodule_from_path(the_repository, null_oid(the_hash_algo), path))
		die(_("no submodule mapping found in .gitmodules for path '%s'"),
		      path);

	displaypath = get_submodule_displaypath(path, prefix, super_prefix);

	if ((CE_STAGEMASK & ce_flags) >> CE_STAGESHIFT) {
		print_status(flags, 'U', path, null_oid(the_hash_algo), displaypath);
		goto cleanup;
	}

	strbuf_addf(&buf, "%s/.git", path);
	git_dir = read_gitfile(buf.buf);
	if (!git_dir)
		git_dir = buf.buf;

	if (!is_submodule_active(the_repository, path) ||
	    !is_git_directory(git_dir)) {
		print_status(flags, '-', path, ce_oid, displaypath);
		strbuf_release(&buf);
		goto cleanup;
	}
	strbuf_release(&buf);

	strvec_pushl(&diff_files_args, "diff-files",
		     "--ignore-submodules=dirty", "--quiet", "--",
		     path, NULL);

	repo_config(the_repository, git_diff_basic_config, NULL);

	repo_init_revisions(the_repository, &rev, NULL);
	rev.abbrev = 0;
	setup_revisions_from_strvec(&diff_files_args, &rev, NULL);
	run_diff_files(&rev, 0);

	if (!diff_result_code(&rev)) {
		print_status(flags, ' ', path, ce_oid,
			     displaypath);
	} else if (!(flags & OPT_CACHED)) {
		struct object_id oid;
		struct ref_store *refs = repo_get_submodule_ref_store(the_repository,
								      path);

		if (!refs) {
			print_status(flags, '-', path, ce_oid, displaypath);