From patchwork Mon Sep 5 07:58:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: cuigaosheng X-Patchwork-Id: 12965727 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 88630ECAAA1 for ; Mon, 5 Sep 2022 07:58:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237226AbiIEH6s (ORCPT ); Mon, 5 Sep 2022 03:58:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35080 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237188AbiIEH6o (ORCPT ); Mon, 5 Sep 2022 03:58:44 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 229F2474E9; Mon, 5 Sep 2022 00:58:41 -0700 (PDT) Received: from kwepemi500012.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4MLgmD0wjmzmV7N; Mon, 5 Sep 2022 15:55:08 +0800 (CST) Received: from cgs.huawei.com (10.244.148.83) by kwepemi500012.china.huawei.com (7.221.188.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Mon, 5 Sep 2022 15:58:39 +0800 From: Gaosheng Cui To: , , , , , CC: , , Subject: [PATCH -next 4/4] integrity: Use DECLARE_FLEX_ARRAY() helper in integrity.h Date: Mon, 5 Sep 2022 15:58:37 +0800 Message-ID: <20220905075837.1083216-5-cuigaosheng1@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220905075837.1083216-1-cuigaosheng1@huawei.com> References: <20220905075837.1083216-1-cuigaosheng1@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.244.148.83] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemi500012.china.huawei.com (7.221.188.12) X-CFilter-Loop: Reflected Precedence: bulk List-ID: Zero-length arrays are deprecated and we are moving towards adopting C99 flexible-array members instead. So, replace zero-length array declarations with the new DECLARE_FLEX_ARRAY() helper macro in integrity.h. As follows: struct evm_ima_xattr_data, struct ima_digest_data, struct signature_v2_hdr, This helper allows for a flexible-array member in a union. Link: KSPP#21 Link: KSPP#193 Link: KSPP#197 Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html Signed-off-by: Gaosheng Cui --- security/integrity/integrity.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h index 7167a6e99bdc..3eeea8d630e0 100644 --- a/security/integrity/integrity.h +++ b/security/integrity/integrity.h @@ -85,7 +85,7 @@ enum evm_ima_xattr_type { struct evm_ima_xattr_data { u8 type; - u8 data[]; + DECLARE_FLEX_ARRAY(u8, data); } __packed; /* Only used in the EVM HMAC code. */ @@ -110,7 +110,7 @@ struct ima_digest_data { } ng; u8 data[2]; } xattr; - u8 digest[]; + DECLARE_FLEX_ARRAY(u8, digest); } __packed; /* @@ -138,7 +138,7 @@ struct signature_v2_hdr { uint8_t hash_algo; /* Digest algorithm [enum hash_algo] */ __be32 keyid; /* IMA key identifier - not X509/PGP specific */ __be16 sig_size; /* signature size */ - uint8_t sig[]; /* signature payload */ + DECLARE_FLEX_ARRAY(uint8_t, sig); /* signature payload */ } __packed; /*