From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BA482C433F5 for ; Mon, 23 May 2022 02:05:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350571AbiEWCFJ (ORCPT ); Sun, 22 May 2022 22:05:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40774 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352576AbiEWCEN (ORCPT ); Sun, 22 May 2022 22:04:13 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AA57D39140; Sun, 22 May 2022 19:04:00 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 6AB6AB80EA5; Mon, 23 May 2022 02:03:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 55A37C34115; Mon, 23 May 2022 02:03:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1653271438; bh=aK8g7YMuhRZgp2N5KP65riZ4nX/BjeCdLeOjA/xPOVI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tZ/uJwEDrrrmp7GTqBPiaeJClYMerrbggk8QPGp5Ef39QyFOQ9jomO5+mWpWYWhNj 2PqqP+nsRDLzgi/iXOQ10kLkRgz/bnSXqII+zOHQhd98gQ2hbdmEeiC0rbG6fTZ4DU epoGhV2qzhW/Kqxs2N86+lxhfqPAiq/SOC5ngPpNo0OlyJ401beiKFmEsDasIq206S rmOuDgXD6Ch+lpaaAGpf3HvTAffjke+hVuJIyMuap6BIs0gJB1N64iuFi6etVjOR6V HmGEDqXLDaP4293dBobYW4w+d4qwZchhbg94NMWsEq5JBLD3aydNW0x/Z/7475lzFK RiBzCjaImL0bw== From: Miguel Ojeda To: Linus Torvalds , Greg Kroah-Hartman Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Jarkko Sakkinen , Miguel Ojeda , Alex Gaynor , Wedson Almeida Filho Subject: [PATCH v7 13/25] rust: export generated symbols Date: Mon, 23 May 2022 04:01:26 +0200 Message-Id: <20220523020209.11810-14-ojeda@kernel.org> In-Reply-To: <20220523020209.11810-1-ojeda@kernel.org> References: <20220523020209.11810-1-ojeda@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: rust-for-linux@vger.kernel.org All symbols are reexported reusing the `EXPORT_SYMBOL_GPL` macro from C. The lists of symbols are generated on the fly. There are three main sets of symbols to distinguish: - The ones from the `core` and `alloc` crates (from the Rust standard library). The code is licensed as Apache/MIT. - The ones from our abstractions in the `kernel` crate. - The helpers (already exported since they are not generated). We export everything as GPL. This ensures we do not mistakenly expose GPL kernel symbols/features as non-GPL, even indirectly. Co-developed-by: Alex Gaynor Signed-off-by: Alex Gaynor Co-developed-by: Wedson Almeida Filho Signed-off-by: Wedson Almeida Filho Signed-off-by: Miguel Ojeda --- rust/exports.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 rust/exports.c diff --git a/rust/exports.c b/rust/exports.c new file mode 100644 index 000000000000..fe3dcfdd6fbf --- /dev/null +++ b/rust/exports.c @@ -0,0 +1,20 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * A hack to export Rust symbols for loadable modules without having to redo + * the entire `include/linux/export.h` logic in Rust. + * + * This requires the Rust's new/future `v0` mangling scheme because the default + * one ("legacy") uses invalid characters for C identifiers (thus we cannot use + * the `EXPORT_SYMBOL_*` macros). + * + * All symbols are exported as GPL-only to guarantee no GPL-only feature is + * accidentally exposed. + */ + +#include + +#define EXPORT_SYMBOL_RUST_GPL(sym) extern int sym; EXPORT_SYMBOL_GPL(sym); + +#include "exports_core_generated.h" +#include "exports_alloc_generated.h" +#include "exports_kernel_generated.h" -- 2.36.1