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 E6398C19F2D for ; Thu, 11 Aug 2022 07:12:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233655AbiHKHMn (ORCPT ); Thu, 11 Aug 2022 03:12:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50208 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229617AbiHKHMm (ORCPT ); Thu, 11 Aug 2022 03:12:42 -0400 Received: from hr2.samba.org (hr2.samba.org [IPv6:2a01:4f8:192:486::2:0]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2ABE08F942 for ; Thu, 11 Aug 2022 00:12:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=samba.org; s=42; h=Message-Id:Date:Cc:To:From; bh=vPaAGGJ+Pb0iLKVfSSsxu/ZO9qxFs6rQq/jjoXkBJfI=; b=Rjm0B38opTYrgpRFUC1wwTnGsE 5/w7XxVsfv5w5qVxd724FNYUqB1ZvAsACCmusnCWIdPVCejwSJjRS4IgYXRaB/+NZ0AtNhPuSrxdh mZJDLMPmTulip04U+nwVzuuq/9zFh4cCMh3wzyWro7mLyNzD49qaqHG6ekX6/5t4RdVWpwM3Of8cO x/YwrLczogNHomgFbbKeZm9Wvq8a96Yp1fpCAJLlBrsXs1lwZEWOEJThnW9F4JPXgeKxnyXTQtZyO XprG2jh7p0Y85vvka8J4MfMBemHBGazX4SSIsILyEx6m1BVDTle/NlxTWh64RJd3iLPpJgSpr3xrB apZMUORYb2RIcTy6f5i7vjZ5Cs71t5DLFK4MK7lu/o1gTTN3zFrnaqOb3f4GkjpKfy7XHw5nWH5FI sdeQYN6TLFl3WMgMfaWm1Wr1LqS7cXObZcnS2HlU6koICM9MlqfFh6uQ0T/hHCqDHC0LCikPGrW9I SNSk6TGppeFnktgsix4A2k0D; Received: from [127.0.0.2] (localhost [127.0.0.1]) by hr2.samba.org with esmtpsa (TLS1.3:ECDHE_SECP256R1__ECDSA_SECP256R1_SHA256__CHACHA20_POLY1305:256) (Exim) id 1oM2Mv-0099v4-HF; Thu, 11 Aug 2022 07:12:38 +0000 From: Stefan Metzmacher To: io-uring@vger.kernel.org, axboe@kernel.dk Cc: Stefan Metzmacher Subject: [PATCH 3/3] io_uring: add missing BUILD_BUG_ON() checks for new io_uring_sqe fields Date: Thu, 11 Aug 2022 09:11:16 +0200 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Signed-off-by: Stefan Metzmacher --- io_uring/io_uring.c | 19 ++++++++++++++++--- io_uring/uring_cmd.c | 3 +++ 2 files changed, 19 insertions(+), 3 deletions(-) diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index b54218da075c..ebfdb2212ec2 100644 --- a/io_uring/io_uring.c +++ b/io_uring/io_uring.c @@ -3885,13 +3885,15 @@ SYSCALL_DEFINE4(io_uring_register, unsigned int, fd, unsigned int, opcode, static int __init io_uring_init(void) { -#define __BUILD_BUG_VERIFY_ELEMENT(stype, eoffset, etype, ename) do { \ +#define __BUILD_BUG_VERIFY_OFFSET_SIZE(stype, eoffset, esize, ename) do { \ BUILD_BUG_ON(offsetof(stype, ename) != eoffset); \ - BUILD_BUG_ON(sizeof(etype) != sizeof_field(stype, ename)); \ + BUILD_BUG_ON(sizeof_field(stype, ename) != esize); \ } while (0) #define BUILD_BUG_SQE_ELEM(eoffset, etype, ename) \ - __BUILD_BUG_VERIFY_ELEMENT(struct io_uring_sqe, eoffset, etype, ename) + __BUILD_BUG_VERIFY_OFFSET_SIZE(struct io_uring_sqe, eoffset, sizeof(etype), ename) +#define BUILD_BUG_SQE_ELEM_SIZE(eoffset, esize, ename) \ + __BUILD_BUG_VERIFY_OFFSET_SIZE(struct io_uring_sqe, eoffset, esize, ename) BUILD_BUG_ON(sizeof(struct io_uring_sqe) != 64); BUILD_BUG_SQE_ELEM(0, __u8, opcode); BUILD_BUG_SQE_ELEM(1, __u8, flags); @@ -3899,6 +3901,8 @@ static int __init io_uring_init(void) BUILD_BUG_SQE_ELEM(4, __s32, fd); BUILD_BUG_SQE_ELEM(8, __u64, off); BUILD_BUG_SQE_ELEM(8, __u64, addr2); + BUILD_BUG_SQE_ELEM(8, __u32, cmd_op); + BUILD_BUG_SQE_ELEM(12, __u32, __pad1); BUILD_BUG_SQE_ELEM(16, __u64, addr); BUILD_BUG_SQE_ELEM(16, __u64, splice_off_in); BUILD_BUG_SQE_ELEM(24, __u32, len); @@ -3917,13 +3921,22 @@ static int __init io_uring_init(void) BUILD_BUG_SQE_ELEM(28, __u32, statx_flags); BUILD_BUG_SQE_ELEM(28, __u32, fadvise_advice); BUILD_BUG_SQE_ELEM(28, __u32, splice_flags); + BUILD_BUG_SQE_ELEM(28, __u32, rename_flags); + BUILD_BUG_SQE_ELEM(28, __u32, unlink_flags); + BUILD_BUG_SQE_ELEM(28, __u32, hardlink_flags); + BUILD_BUG_SQE_ELEM(28, __u32, xattr_flags); + BUILD_BUG_SQE_ELEM(28, __u32, msg_ring_flags); BUILD_BUG_SQE_ELEM(32, __u64, user_data); BUILD_BUG_SQE_ELEM(40, __u16, buf_index); BUILD_BUG_SQE_ELEM(40, __u16, buf_group); BUILD_BUG_SQE_ELEM(42, __u16, personality); BUILD_BUG_SQE_ELEM(44, __s32, splice_fd_in); BUILD_BUG_SQE_ELEM(44, __u32, file_index); + BUILD_BUG_SQE_ELEM(44, __u16, notification_idx); + BUILD_BUG_SQE_ELEM(46, __u16, addr_len); BUILD_BUG_SQE_ELEM(48, __u64, addr3); + BUILD_BUG_SQE_ELEM_SIZE(48, 0, cmd); + BUILD_BUG_SQE_ELEM(56, __u64, __pad2); BUILD_BUG_ON(sizeof(struct io_uring_files_update) != sizeof(struct io_uring_rsrc_update)); diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c index 219e9ebbb44a..03f5f69a4003 100644 --- a/io_uring/uring_cmd.c +++ b/io_uring/uring_cmd.c @@ -58,6 +58,9 @@ int io_uring_cmd_prep_async(struct io_kiocb *req) struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd); size_t cmd_size; + BUILD_BUG_ON(uring_cmd_pdu_size(0) != 16); + BUILD_BUG_ON(uring_cmd_pdu_size(1) != 80); + cmd_size = uring_cmd_pdu_size(req->ctx->flags & IORING_SETUP_SQE128); memcpy(req->async_data, ioucmd->cmd, cmd_size); -- 2.34.1