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 D2CACC433F5 for ; Sat, 12 Feb 2022 13:06:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235427AbiBLNGT (ORCPT ); Sat, 12 Feb 2022 08:06:19 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:55872 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235600AbiBLNGD (ORCPT ); Sat, 12 Feb 2022 08:06:03 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D9B662982D; Sat, 12 Feb 2022 05:05:57 -0800 (PST) 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 5B73360E8E; Sat, 12 Feb 2022 13:05:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 37E30C340EE; Sat, 12 Feb 2022 13:05:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1644671156; bh=rrREVX03S6o2+GQ+Y19T5cBN1f9aL3VHbifykc6norU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=H6N0oQP3Z5GIpUw5WAPvKbXPqIXIaBkctGL4u74IWL146ry/1PeOsoV8XkeTrKC/k MQBGXs2Het9arydYTiIVHau2cwhHHKRlu+TvsAYh1IELvRY7RKdunVDSGuXLsCicrh SzHuN0InPnJahcmIvAYSFXE+J4otIETQEI5FuIipgPpQKN8JnCN/zBqpINHIeMsEmD qYgiEE9h2ENX8xVVrmAuyG3ooyyppa/bfinP+pRQ2rtKlVfMWPi+g7hlOx8ORtB0lF NqWXq6uToTUdTeY8uI1qjsJMbWreRkYzaRHhh8xATQHP0EcvPCZzjZqaIKTzlWjvng 2+HCQ8fsJTOWw== 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 v4 11/20] rust: export generated symbols Date: Sat, 12 Feb 2022 14:03:37 +0100 Message-Id: <20220212130410.6901-12-ojeda@kernel.org> In-Reply-To: <20220212130410.6901-1-ojeda@kernel.org> References: <20220212130410.6901-1-ojeda@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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 | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 rust/exports.c diff --git a/rust/exports.c b/rust/exports.c new file mode 100644 index 000000000000..a9aec51eed8a --- /dev/null +++ b/rust/exports.c @@ -0,0 +1,19 @@ +// 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