From patchwork Wed Jun 29 17:58:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ammar Faizi X-Patchwork-Id: 12900505 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 3E476C433EF for ; Wed, 29 Jun 2022 17:59:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232124AbiF2R7f (ORCPT ); Wed, 29 Jun 2022 13:59:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39626 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232118AbiF2R7f (ORCPT ); Wed, 29 Jun 2022 13:59:35 -0400 Received: from gnuweeb.org (gnuweeb.org [51.81.211.47]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 70CB6E9 for ; Wed, 29 Jun 2022 10:59:34 -0700 (PDT) Received: from integral2.. (unknown [180.245.197.13]) by gnuweeb.org (Postfix) with ESMTPSA id 09FFE800D8; Wed, 29 Jun 2022 17:59:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gnuweeb.org; s=default; t=1656525574; bh=EEi2haoxNhLN0yY3nzLrm6Y7Q5tS1uuPWrI/84vA0Qg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OFFgTr28ywdISED1DVZ0p4uAm7Rs30woNXTkQkjx1teiL3y+NkMx1YXM1EWJ+Z8nE NdXQ3INXRYRwGxcmZKX+s+7RY+Ggf2M2yPrV8+bJxyXNh6rqern4I+erFm4ll7joVn i2qtHkjq8nD+W65RjOp6l5v42K6wXxzzxtb70sXOH5ObUmDJmb1ZRQBX5Pim7X4ehU Scs5eIjv3Lut1Hh7oMb/TznjwsOYJNa2HGP5X7TDo327xxzUgsp2H9LeVX72H+KkNS clmlMzoa7+BboVImz4hh3DM8SJTJrbFBjRLLOTwesGkLp9sITzlmtPnnES1ZPIbgjB SxkhBizN+GpPQ== From: Ammar Faizi To: Jens Axboe Cc: Ammar Faizi , Alviro Iskandar Setiawan , Fernanda Ma'rouf , Pavel Begunkov , Hao Xu , io-uring Mailing List , GNU/Weeb Mailing List Subject: [PATCH liburing v2 2/8] arch: syscall: Add `__sys_open()` syscall Date: Thu, 30 Jun 2022 00:58:24 +0700 Message-Id: <20220629175255.1377052-3-ammar.faizi@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220629175255.1377052-1-ammar.faizi@intel.com> References: <20220629175255.1377052-1-ammar.faizi@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org From: Ammar Faizi A prep patch to support aarch64 nolibc. We will use this to get the page size by reading /proc/self/auxv. For some reason __NR_open is not defined, so also define it in aarch64 syscall specific file. Signed-off-by: Ammar Faizi --- src/arch/aarch64/syscall.h | 4 ++++ src/arch/generic/syscall.h | 9 +++++++++ src/arch/syscall-defs.h | 7 +++++++ 3 files changed, 20 insertions(+) diff --git a/src/arch/aarch64/syscall.h b/src/arch/aarch64/syscall.h index c0ab7e2..5e26714 100644 --- a/src/arch/aarch64/syscall.h +++ b/src/arch/aarch64/syscall.h @@ -84,6 +84,10 @@ "r" (x4), "r"(x5)); \ }) +#ifndef __NR_open +#define __NR_open 0x400 +#endif + #include "../syscall-defs.h" #else /* #if defined(__aarch64__) */ diff --git a/src/arch/generic/syscall.h b/src/arch/generic/syscall.h index fa93064..71b2234 100644 --- a/src/arch/generic/syscall.h +++ b/src/arch/generic/syscall.h @@ -7,6 +7,8 @@ #ifndef LIBURING_ARCH_GENERIC_SYSCALL_H #define LIBURING_ARCH_GENERIC_SYSCALL_H +#include + static inline int ____sys_io_uring_register(int fd, unsigned opcode, const void *arg, unsigned nr_args) { @@ -41,6 +43,13 @@ static inline int ____sys_io_uring_enter(int fd, unsigned to_submit, _NSIG / 8); } +static inline int __sys_open(const char *pathname, int flags, mode_t mode) +{ + int ret; + ret = open(pathname, flags, mode); + return (ret < 0) ? -errno : ret; +} + static inline void *__sys_mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset) { diff --git a/src/arch/syscall-defs.h b/src/arch/syscall-defs.h index 1e8ae1b..0f67446 100644 --- a/src/arch/syscall-defs.h +++ b/src/arch/syscall-defs.h @@ -3,6 +3,13 @@ #ifndef LIBURING_ARCH_SYSCALL_DEFS_H #define LIBURING_ARCH_SYSCALL_DEFS_H +#include + +static inline int __sys_open(const char *pathname, int flags, mode_t mode) +{ + return (int) __do_syscall3(__NR_open, pathname, flags, mode); +} + static inline void *__sys_mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset) {