ms_upload_constants()

18function ms_upload_constants() {19	// This filter is attached in ms-default-filters.php but that file is not included during SHORTINIT.20	add_filter( 'default_site_option_ms_files_rewriting', '__return_true' );21 22	if ( ! get_site_option( 'ms_files_rewriting' ) ) {23		return;24	}25 26	// Base uploads dir relative to ABSPATH.27	if ( ! defined( 'UPLOADBLOGSDIR' ) ) {28		define( 'UPLOADBLOGSDIR', 'wp-content/blogs.dir' );29	}30 31	/*32	 * Note, the main site in a post-MU network uses wp-content/uploads.33	 * This is handled in wp_upload_dir() by ignoring UPLOADS for this case.34	 */35	if ( ! defined( 'UPLOADS' ) ) {36		$site_id = get_current_blog_id();37 38		define( 'UPLOADS', UPLOADBLOGSDIR . '/' . $site_id . '/files/' );39 40		// Uploads dir relative to ABSPATH.41		if ( 'wp-content/blogs.dir' === UPLOADBLOGSDIR && ! defined( 'BLOGUPLOADDIR' ) ) {42			define( 'BLOGUPLOADDIR', WP_CONTENT_DIR . '/blogs.dir/' . $site_id . '/files/' );43		}44	}45}