From patchwork Wed May 24 17:55:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhangjin Wu X-Patchwork-Id: 13254430 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 43A20C77B7A for ; Wed, 24 May 2023 17:56:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231446AbjEXR4Y (ORCPT ); Wed, 24 May 2023 13:56:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35444 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229622AbjEXR4X (ORCPT ); Wed, 24 May 2023 13:56:23 -0400 Received: from bg4.exmail.qq.com (bg4.exmail.qq.com [43.155.67.158]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C10F7D3; Wed, 24 May 2023 10:56:21 -0700 (PDT) X-QQ-mid: bizesmtp83t1684950976taj01xsk Received: from linux-lab-host.localdomain ( [116.30.125.36]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 25 May 2023 01:56:14 +0800 (CST) X-QQ-SSF: 01200000000000D0V000000A0000000 X-QQ-FEAT: 3M0okmaRx3heRPkZGAvThL5q8yJbl4iq2g+n/V08QcrkuDixKCO+Kd5/chZ81 RzQT/uozjLZp+bJTDwM4DrjefAVoP6YAkePF7XNpTK/nJeuf9WQLmw0zG25rrehB1prqfgh Mxe/FZ2oQE83jxi0IwkPYBpg1nhziKdy250rcb2fxzd2Y14WfvDQutJBG35HFVq8BnVLs7O P8KDx0A/JpQyxXInpBxAh2ptKYxoEApcMkJMZmv56mSHAl/oZrtg2VYwPJm4gT9nt9jEq1L c4eGTgncEQWLJLlWkWX99AdeN6dGvF7IcjRuEmGdHroUaPPPUybeEoz2wiy/oTiy6tvnQ3v Dn5Dy/0Ii+6Wiu+MMEXg7lf4YzUemtxh5Zhk5Dp+Tsn/rDdZtH0dxeEjPUGUQ== X-QQ-GoodBg: 0 X-BIZMAIL-ID: 1222464122104175739 From: Zhangjin Wu To: w@1wt.eu Cc: falcon@tinylab.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-riscv@lists.infradead.org, palmer@dabbelt.com, paul.walmsley@sifive.com, thomas@t-8ch.de Subject: [PATCH 08/13] tools/nolibc: sys_lseek: riscv: use __NR_llseek for rv32 Date: Thu, 25 May 2023 01:55:39 +0800 Message-Id: X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtp:tinylab.org:qybglogicsvrsz:qybglogicsvrsz3a-3 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org riscv uses the generic include/uapi/asm-generic/unistd.h, it has code like this: #if __BITS_PER_LONG == 64 && !defined(__SYSCALL_COMPAT) #define __NR_lseek __NR3264_lseek #else #define __NR_llseek __NR3264_lseek #endif There is no __NR_lseek for rv32, use __NR_llseek instead. This code is based on sysdeps/unix/sysv/linux/lseek.c of glibc. Signed-off-by: Zhangjin Wu Signed-off-by: Willy Tarreau --- tools/include/nolibc/std.h | 1 + tools/include/nolibc/sys.h | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+) diff --git a/tools/include/nolibc/std.h b/tools/include/nolibc/std.h index 933bc0be7e1c..83c0b0cb9564 100644 --- a/tools/include/nolibc/std.h +++ b/tools/include/nolibc/std.h @@ -32,5 +32,6 @@ typedef signed long off_t; typedef signed long blksize_t; typedef signed long blkcnt_t; typedef signed long time_t; +typedef long long loff_t; #endif /* _NOLIBC_STD_H */ diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h index d5792a5de70b..0ff77c0a06d7 100644 --- a/tools/include/nolibc/sys.h +++ b/tools/include/nolibc/sys.h @@ -671,7 +671,25 @@ int link(const char *old, const char *new) static __attribute__((unused)) off_t sys_lseek(int fd, off_t offset, int whence) { +#ifdef __NR_lseek return my_syscall3(__NR_lseek, fd, offset, whence); +#elif defined(__NR_llseek) + loff_t result; + off_t retval; + int ret; + + ret = my_syscall5(__NR_llseek, fd, (long) (((uint64_t) (offset)) >> 32), (long) offset, &result, whence); + if (ret) + return ret; + + retval = (off_t) result; + if (retval != result) + return -EOVERFLOW; + + return retval; +#else +#error Neither __NR_lseek nor __NR_llseek defined, cannot implement sys_lseek() +#endif } static __attribute__((unused))