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 721DDC6FA92 for ; Tue, 27 Sep 2022 13:19:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232740AbiI0NTc (ORCPT ); Tue, 27 Sep 2022 09:19:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38152 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232723AbiI0NSk (ORCPT ); Tue, 27 Sep 2022 09:18:40 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9F5311F2F5; Tue, 27 Sep 2022 06:17:10 -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 7EBF1B81BE2; Tue, 27 Sep 2022 13:16:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27313C433C1; Tue, 27 Sep 2022 13:16:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1664284614; bh=s/UljI70Vv0SGpL736mlm7zLImOyzf9iXSKvkaxCaWY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=M71Xih9AdmGtPValy28Q23Ca6NgekVQzhMigg1Aj8UAxzaoT8ukkN9ChNkGeL9vGO tp/gA1EISSrr4KfuB1JNf6R1mq6a4s47uj2fcco1/C7DMwu1yAKGV/OlFsSTXlHeM7 R/RosiRymCLwE7eD4Vpu5EYZ3WW0VA73qFDTrFgWtkqzfWyBx2AKLXdl+GKhh49jY8 J/9wPWnmiqvU5Yn/Kccvb6uHXLB+IEtHNpWO97hxo4sizNrOXXRt7MGlb1YX1ry8UP mbRoadQRczwVSL/A/kvt4tU+qfGqfeBbC9OmpvIvCVr+tmkWb3tyGy43jaYNJDDjDv aC3XoGZ8bxFtQ== From: Miguel Ojeda To: Linus Torvalds , Greg Kroah-Hartman Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, patches@lists.linux.dev, Jarkko Sakkinen , Miguel Ojeda , Kees Cook , Alex Gaynor , Wedson Almeida Filho , =?UTF-8?q?Bj=C3=B6rn=20Roy=20Baron?= , Boqun Feng , Gary Guo Subject: [PATCH v10 13/27] rust: export generated symbols Date: Tue, 27 Sep 2022 15:14:44 +0200 Message-Id: <20220927131518.30000-14-ojeda@kernel.org> In-Reply-To: <20220927131518.30000-1-ojeda@kernel.org> References: <20220927131518.30000-1-ojeda@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@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. Reviewed-by: Kees Cook Co-developed-by: Alex Gaynor Signed-off-by: Alex Gaynor Co-developed-by: Wedson Almeida Filho Signed-off-by: Wedson Almeida Filho Co-developed-by: Björn Roy Baron Signed-off-by: Björn Roy Baron Signed-off-by: Miguel Ojeda --- rust/exports.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 rust/exports.c diff --git a/rust/exports.c b/rust/exports.c new file mode 100644 index 000000000000..bb7cc64cecd0 --- /dev/null +++ b/rust/exports.c @@ -0,0 +1,21 @@ +// 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_bindings_generated.h" +#include "exports_kernel_generated.h" -- 2.37.3