From patchwork Mon Jul 4 19:31:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ammar Faizi X-Patchwork-Id: 12905807 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 7DB21C433EF for ; Mon, 4 Jul 2022 19:32:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231264AbiGDTc3 (ORCPT ); Mon, 4 Jul 2022 15:32:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232511AbiGDTc1 (ORCPT ); Mon, 4 Jul 2022 15:32:27 -0400 Received: from gnuweeb.org (gnuweeb.org [51.81.211.47]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4393A21B0 for ; Mon, 4 Jul 2022 12:32:27 -0700 (PDT) Received: from integral2.. (unknown [36.81.65.188]) by gnuweeb.org (Postfix) with ESMTPSA id 3DBB880286; Mon, 4 Jul 2022 19:32:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gnuweeb.org; s=default; t=1656963146; bh=/ZM+1WP/d8NrhReu0jKB1r2savxNdRerPeQ5ZmjG5jQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hVW8bjptrUDx80BkqVXcJ+IvXSfvHBCYEPi98W+tm5VxGdenAhuQmQxapUu6ly+NT NXIr262wpISIFisqrr1jJRXHh/bkRQQAXTZxkimaFtY6boK04r9B4MQBp2/5Fz11DC vogmE9RF8o3BCfdBPzASw+ogP34bXFh2HJ12B7i8m1KNAuyQT/VUQILc3WM4PYKilJ qnSJISd68BZ0gdc7rqdI7O0pTv2KV+3GA0+URzvK26nOAgXz3yJxBWr9ROluPTj1aL a6NWx6axZFDPn3l9+Thk4yo+qtTeLIWM30F+ONPn8B9B7UW6bklb/v7EACdwgaUPeo B/Ypjh9YSrisA== 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 v4 03/10] arch: syscall: Add `__sys_read()` syscall Date: Tue, 5 Jul 2022 02:31:48 +0700 Message-Id: <20220704192827.338771-4-ammar.faizi@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220704192827.338771-1-ammar.faizi@intel.com> References: <20220704192827.338771-1-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. v2: - Fix return type, __sys_read() returns ssize_t, not int. Reviewed-by: Alviro Iskandar Setiawan Signed-off-by: Ammar Faizi --- src/arch/generic/syscall.h | 7 +++++++ src/arch/syscall-defs.h | 5 +++++ 2 files changed, 12 insertions(+) diff --git a/src/arch/generic/syscall.h b/src/arch/generic/syscall.h index 71b2234..22252a1 100644 --- a/src/arch/generic/syscall.h +++ b/src/arch/generic/syscall.h @@ -50,6 +50,13 @@ static inline int __sys_open(const char *pathname, int flags, mode_t mode) return (ret < 0) ? -errno : ret; } +static inline ssize_t __sys_read(int fd, void *buffer, size_t size) +{ + ssize_t ret; + ret = read(fd, buffer, size); + 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 9d4424d..bde69fa 100644 --- a/src/arch/syscall-defs.h +++ b/src/arch/syscall-defs.h @@ -17,6 +17,11 @@ static inline int __sys_open(const char *pathname, int flags, mode_t mode) #endif } +static inline ssize_t __sys_read(int fd, void *buffer, size_t size) +{ + return (ssize_t) __do_syscall3(__NR_read, fd, buffer, size); +} + static inline void *__sys_mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset) {