From patchwork Tue Jul 5 07:43:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ammar Faizi X-Patchwork-Id: 12906036 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 E0126C43334 for ; Tue, 5 Jul 2022 07:45:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229782AbiGEHpM (ORCPT ); Tue, 5 Jul 2022 03:45:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40320 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229779AbiGEHpL (ORCPT ); Tue, 5 Jul 2022 03:45:11 -0400 Received: from gnuweeb.org (gnuweeb.org [51.81.211.47]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8CDA812D06 for ; Tue, 5 Jul 2022 00:45:10 -0700 (PDT) Received: from integral2.. (unknown [36.81.65.188]) by gnuweeb.org (Postfix) with ESMTPSA id 162B7804C5; Tue, 5 Jul 2022 07:45:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gnuweeb.org; s=default; t=1657007110; bh=pW9IwT0NhgzgYupZV0di74lCCTqvlb2sS0263D7hWlw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=piB8NMlgs+aLn4YeY62QujJXM9U685XS9ofEu41BnCI0dJl5xEPadMK096xU0gnw8 8BiCCkhM6OB6AnVjjrAkSbUmPR/yKQiE/c/0FC2rf7ztViZBgKOt0EL+8OuEvZqvlZ wdcdCwJXl4WYNPuo4lMb5EHIbyUG3aXmbxy4mlEzj1/bqhGxne/+Q6+I5CLxnXr6gg s/m9DvDrkBPTIio74P9eLL4FUiWmTatfKHhmcEevvlHEcCRIGkTl4jXw92btt1pjCA ef7RoK2VQcriE/Qu043/b8nmUNT2Tc84rqXzLnZLgsZb7Opmyyz4G/3aNsvLQqCfiN eJmYtI3duhz5g== From: Ammar Faizi To: Jens Axboe Cc: Ammar Faizi , Alviro Iskandar Setiawan , Fernanda Ma'rouf , Hao Xu , Pavel Begunkov , io-uring Mailing List , GNU/Weeb Mailing List Subject: [PATCH liburing v5 02/10] arch: syscall: Add `__sys_open()` syscall Date: Tue, 5 Jul 2022 14:43:52 +0700 Message-Id: <20220705073920.367794-3-ammar.faizi@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220705073920.367794-1-ammar.faizi@intel.com> References: <20220705073920.367794-1-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. Reviewed-by: Alviro Iskandar Setiawan Signed-off-by: Ammar Faizi --- src/arch/generic/syscall.h | 9 +++++++++ src/arch/syscall-defs.h | 14 ++++++++++++++ 2 files changed, 23 insertions(+) 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..d38b5f3 100644 --- a/src/arch/syscall-defs.h +++ b/src/arch/syscall-defs.h @@ -3,6 +3,20 @@ #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) +{ + /* + * Some architectures don't have __NR_open, but __NR_openat. + */ +#ifdef __NR_open + return __do_syscall3(__NR_open, pathname, flags, mode); +#else + return __do_syscall4(__NR_openat, AT_FDCWD, pathname, flags, mode); +#endif +} + static inline void *__sys_mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset) {