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 B8CFCC433EF for ; Thu, 17 Mar 2022 18:12:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237354AbiCQSOC (ORCPT ); Thu, 17 Mar 2022 14:14:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34356 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237309AbiCQSOB (ORCPT ); Thu, 17 Mar 2022 14:14:01 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4783A21F76A; Thu, 17 Mar 2022 11:12:09 -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 dfw.source.kernel.org (Postfix) with ESMTPS id C63C26167E; Thu, 17 Mar 2022 18:12:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6C614C340E9; Thu, 17 Mar 2022 18:12:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1647540728; bh=bUhkeyVMEpUF8zm+Yp0Qgcuxbk2GMC5TY1d7kJdRmus=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=K+Eu65csOPVvAQHxp+d2RmeYqZM3l2T65SXH6C1f7xMfD3Nqy7gq8ZkPtq+xn8cvy wFLp3pGeHuDdD4MfdwhL6221bpghlMuW7WJ/pzwJAUn0yw/mF6hPT0mVKmQDCzY0pP rW3cLCJV2Dk55tQDNrEE3l7KgUZSmFxSPqRB1iJhvYu3e80ctqrlW9iaAkCBiejQST hHVjWwGjMoJfMkyBJrYLHI3nKsi6GNRUOxHj3TcWayNEWCMWJdqYR9FBppgSM2pdvA zOX4HVKc+yOz6Sjwij/M2lrx70AYq2lW8jxAW8xw0gyiJzFW5Oqe3MuTuPPAH0Iy6H YNAQiFkLAVcFA== From: Miguel Ojeda To: Linus Torvalds , Greg Kroah-Hartman Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Miguel Ojeda , Alex Gaynor , Wedson Almeida Filho Subject: [PATCH v5 11/20] rust: export generated symbols Date: Thu, 17 Mar 2022 19:09:59 +0100 Message-Id: <20220317181032.15436-12-ojeda@kernel.org> In-Reply-To: <20220317181032.15436-1-ojeda@kernel.org> References: <20220317181032.15436-1-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" -- 2.35.1