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 localhost.localdomain (unknown [182.2.68.216]) by gnuweeb.org (Postfix) with ESMTPSA id 1127A80B16; Mon, 29 Aug 2022 03:07:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gnuweeb.org; s=default; t=1661742475; bh=VlX7C/9ehX4QyKg5QD8GEmv081Be7gwIp1s3dgH//yY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o64f1A3MlidJp35tF/cMKXgBgL2Vaj5V4SWmqMedI8qKaUwtkxe8EEDT4eXLeVchY bGw7WbvnfxZGNHdeepaHpkmHoU5QZPFJ6kSr5yAoozKYZgTnnS/iCRj2adDq0RMtkj /Sdd9eGMdDUyYWefiEnASTHCX8F9dod+1sD/SerSgiOhAaFZyCjpOREZqviy3kMHb0 gpE3dK3UR3e4/tHmIo6wgp54iZQ048dXNBpurBzN34WHDQk/M8mgeO2b9n0zoXgQwC IMS/fOOJI7BEEE3/NSedv5J720kYdxypGok4OQSDRuKN98Z6Bs8DTL9CD7D/TBhtWQ RbBEslJiy9enA== From: Ammar Faizi To: Jens Axboe Cc: Ammar Faizi , Caleb Sander , Muhammad Rizki , Kanna Scarlet , io-uring Mailing List , Linux Kernel Mailing List , GNU/Weeb Mailing List Subject: [RFC PATCH liburing v1 1/4] syscall: Add io_uring syscall functions Date: Mon, 29 Aug 2022 10:07:36 +0700 Message-Id: <20220829030521.3373516-2-ammar.faizi@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220829030521.3373516-1-ammar.faizi@intel.com> References: <20220829030521.3373516-1-ammar.faizi@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit List-Id: From: Ammar Faizi We have: man 2 io_uring_setup; man 2 io_uring_enter; man 2 io_uring_register; Those entries say that io_uring syscall functions are declared in ``. But they don't actually exist and never existed. This is causing confusion for people who read the manpage. Let's just implement them in liburing so they exist. This also allows the user to invoke io_uring syscalls directly instead of using the full liburing provided setup. Link: https://github.com/axboe/liburing/pull/646#issuecomment-1229639532 Cc: Caleb Sander Signed-off-by: Ammar Faizi --- src/Makefile | 2 +- src/include/liburing.h | 8 ++++++++ src/liburing.map | 4 ++++ src/syscall.c | 30 ++++++++++++++++++++++++++++++ 4 files changed, 43 insertions(+), 1 deletion(-) create mode 100644 src/syscall.c diff --git a/src/Makefile b/src/Makefile index dad379d..73a98ba 100644 --- a/src/Makefile +++ b/src/Makefile @@ -32,7 +32,7 @@ endif all: $(all_targets) -liburing_srcs := setup.c queue.c register.c +liburing_srcs := setup.c queue.c register.c syscall.c ifeq ($(CONFIG_NOLIBC),y) liburing_srcs += nolibc.c diff --git a/src/include/liburing.h b/src/include/liburing.h index 66c5095..7db1ea9 100644 --- a/src/include/liburing.h +++ b/src/include/liburing.h @@ -202,6 +202,14 @@ int io_uring_register_file_alloc_range(struct io_uring *ring, int io_uring_register_notifications(struct io_uring *ring, unsigned nr, struct io_uring_notification_slot *slots); int io_uring_unregister_notifications(struct io_uring *ring); +int io_uring_enter(unsigned int fd, unsigned int to_submit, + unsigned int min_complete, unsigned int flags, + sigset_t *sig); +int io_uring_enter2(int fd, unsigned to_submit, unsigned min_complete, + unsigned flags, sigset_t *sig, int sz); +int io_uring_setup(unsigned entries, struct io_uring_params *p); +int io_uring_register(int fd, unsigned opcode, const void *arg, + unsigned nr_args); /* * Helper for the peek/wait single cqe functions. Exported because of that, diff --git a/src/liburing.map b/src/liburing.map index 7d8f143..8573dfc 100644 --- a/src/liburing.map +++ b/src/liburing.map @@ -62,4 +62,8 @@ LIBURING_2.3 { io_uring_register_file_alloc_range; io_uring_register_notifications; io_uring_unregister_notifications; + io_uring_enter; + io_uring_enter2; + io_uring_setup; + io_uring_register; } LIBURING_2.2; diff --git a/src/syscall.c b/src/syscall.c new file mode 100644 index 0000000..fcc6808 --- /dev/null +++ b/src/syscall.c @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: MIT */ + +#include "lib.h" +#include "syscall.h" +#include + +int io_uring_enter(unsigned int fd, unsigned int to_submit, + unsigned int min_complete, unsigned int flags, + sigset_t *sig) +{ + return __sys_io_uring_enter(fd, to_submit, min_complete, flags, sig); +} + +int io_uring_enter2(int fd, unsigned to_submit, unsigned min_complete, + unsigned flags, sigset_t *sig, int sz) +{ + return __sys_io_uring_enter2(fd, to_submit, min_complete, flags, sig, + sz); +} + +int io_uring_setup(unsigned entries, struct io_uring_params *p) +{ + return __sys_io_uring_setup(entries, p); +} + +int io_uring_register(int fd, unsigned opcode, const void *arg, + unsigned nr_args) +{ + return __sys_io_uring_register(fd, opcode, arg, nr_args); +} -- Ammar Faizi