From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on gnuweeb.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=ALL_TRUSTED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NO_DNS_FOR_FROM,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.6 Received: from integral2.. (unknown [36.81.65.188]) by gnuweeb.org (Postfix) with ESMTPSA id 55EEB80247; Mon, 4 Jul 2022 19:32:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gnuweeb.org; s=default; t=1656963142; bh=T5YtuizVcYbZcOsNQ6+4im6WDsbpq6AZPrc2UiyJftY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Hv2j2KID5l8MHhSZaVr0Mgko/cEuU5CWoAGqhKl1ZgsrvPGHxak7u0VxAo45ebzmB UITgckkUWZxUN1J5gER6FTX65s9Sj4Lp/JASuIN9IjeQGLhGv4KeVVfNkLxdg6DfP5 rL4960qWXVWqcNl1P0jOG/h79v2wLubOGaYsS5fS8WGvc8M1ZNEdQlHS/9tY/y5X9F M+/CXEnKTCndhA5G6qJJpjGSpbQmE0SveQiYuItYTKG0vTDdnLLlvachi+4S1RVPIW nVPQFdC0u3UODyw6DrtqNFhI5w2X14oV5MlhrIGScbAMk5/XNsdUBwzY0HeJNPlzJq I7q5HlARhgL1g== 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 02/10] arch: syscall: Add `__sys_open()` syscall Date: Tue, 5 Jul 2022 02:31:47 +0700 Message-Id: <20220704192827.338771-3-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 Content-Transfer-Encoding: 8bit List-Id: 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. v3: - Use __NR_openat if __NR_open is not defined. 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..9d4424d 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) { -- Ammar Faizi