Function init_worktree_config

worktree.c:1030–1090

}

int init_worktree_config(struct repository *r)
{
	int res = 0;
	int bare = 0;
	struct config_set cs = { { 0 } };
	const char *core_worktree;
	char *common_config_file;
	char *main_worktree_file;

	/*
	 * If the extension is already enabled, then we can skip the
	 * upgrade process.
	 */
	if (r->repository_format_worktree_config)
		return 0;
	if ((res = repo_config_set_gently(the_repository, "extensions.worktreeConfig", "true")))
		return error(_("failed to set extensions.worktreeConfig setting"));

	common_config_file = xstrfmt("%s/config", r->commondir);
	main_worktree_file = xstrfmt("%s/config.worktree", r->commondir);

	git_configset_init(&cs);
	git_configset_add_file(&cs, common_config_file);

	/*
	 * If core.bare is true in the common config file, then we need to
	 * move it to the main worktree's config file or it will break all
	 * worktrees. If it is false, then leave it in place because it
	 * _could_ be negating a global core.bare=true.
	 */
	if (!git_configset_get_bool(&cs, "core.bare", &bare) && bare) {
		if ((res = move_config_setting("core.bare", "true",
					       common_config_file,
					       main_worktree_file)))
			goto cleanup;
	}
	/*
	 * If core.worktree is set, then the main worktree is located
	 * somewhere different than the parent of the common Git dir.
	 * Relocate that value to avoid breaking all worktrees with this
	 * upgrade to worktree config.
	 */
	if (!git_configset_get_value(&cs, "core.worktree", &core_worktree, NULL)) {
		if ((res = move_config_setting("core.worktree", core_worktree,
					       common_config_file,
					       main_worktree_file)))
			goto cleanup;
	}

	/*
	 * Ensure that we use worktree config for the remaining lifetime
	 * of the current process.
	 */
	r->repository_format_worktree_config = 1;

cleanup:
	git_configset_clear(&cs);
	free(common_config_file);