From owner-svn-src-head@freebsd.org Sat Nov 2 04:01:39 2019 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id CA3C816066B; Sat, 2 Nov 2019 04:01:39 +0000 (UTC) (envelope-from kevans@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 474ljv4yzmz48Hj; Sat, 2 Nov 2019 04:01:39 +0000 (UTC) (envelope-from kevans@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 74FAB1D9F3; Sat, 2 Nov 2019 04:01:39 +0000 (UTC) (envelope-from kevans@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id xA241du6088287; Sat, 2 Nov 2019 04:01:39 GMT (envelope-from kevans@FreeBSD.org) Received: (from kevans@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id xA241dtl088286; Sat, 2 Nov 2019 04:01:39 GMT (envelope-from kevans@FreeBSD.org) Message-Id: <201911020401.xA241dtl088286@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kevans set sender to kevans@FreeBSD.org using -f From: Kyle Evans Date: Sat, 2 Nov 2019 04:01:39 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r354247 - head/stand/lua X-SVN-Group: head X-SVN-Commit-Author: kevans X-SVN-Commit-Paths: head/stand/lua X-SVN-Commit-Revision: 354247 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 02 Nov 2019 04:01:39 -0000 Author: kevans Date: Sat Nov 2 04:01:39 2019 New Revision: 354247 URL: https://svnweb.freebsd.org/changeset/base/354247 Log: lualoader: rewrite try_include using lfs + dofile Actual modules get require()'d in, rather than try_include(). All instances of try_include should be provided with proper hooks/API in the rest of loader to do the work they need to do, since we can't rely on them to exist. Convert this now to lfs + dofile since we won't really be treating them as modules. lfs is required because dofile will properly throw an error if the file doesn't exist, which is not in the spirit of 'optionally included'. Getting out of the pcall game allows us to provide a loader.exit() style call that backs out to the common bits of loader (autoboot sequence unless disabled with a loader.setenv("autoboot_delay", "NO")). The most ideal way identified so far to implement loader.exit() is to throw a special abort-style error that indicates to the caller in interp_lua that we've not actually errored out, just continue execution. Otherwise, we have to hack in logic to bubble up and return from loader.lua without continuing further, which gets kind of ugly depending on the context in which we're aborting. A compat shim is provided temporarily in case the executing loader doesn't yet have loader.lua_path, which was just added in r354246. Modified: head/stand/lua/core.lua Modified: head/stand/lua/core.lua ============================================================================== --- head/stand/lua/core.lua Sat Nov 2 03:41:30 2019 (r354246) +++ head/stand/lua/core.lua Sat Nov 2 04:01:39 2019 (r354247) @@ -69,12 +69,28 @@ end -- try_include will return the loaded module on success, or false and the error -- message on failure. function try_include(module) - local status, ret = pcall(require, module) - -- ret is the module if we succeeded. - if status then - return ret + if module:sub(1, 1) ~= "/" then + local lua_path = loader.lua_paths + -- XXX Temporary compat shim; this should be removed once the + -- loader.lua_path export has sufficiently spread. + if lua_path == nil then + lua_path = "/boot/lua" + end + module = lua_path .. "/" .. module + -- We only attempt to append an extension if an absolute path + -- wasn't specified. This assumes that the caller either wants + -- to treat this like it would require() and specify just the + -- base filename, or they know what they're doing as they've + -- specified an absolute path and we shouldn't impede. + if module:match(".lua$") == nil then + module = module .. ".lua" + end end - return false, ret + if lfs.attributes(module, "mode") ~= "file" then + return + end + + return dofile(module) end -- Module exports