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Tue, 18 Feb 2020 11:13:21 -0800 (PST) From: Pavel Begunkov To: Jens Axboe , io-uring@vger.kernel.org, Stefan Metzmacher Subject: [PATCH liburing v3 2/2] test/splice: add basic splice tests Date: Tue, 18 Feb 2020 22:12:30 +0300 Message-Id: X-Mailer: git-send-email 2.24.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: io-uring-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Signed-off-by: Pavel Begunkov --- test/Makefile | 4 +- test/splice.c | 138 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 140 insertions(+), 2 deletions(-) create mode 100644 test/splice.c diff --git a/test/Makefile b/test/Makefile index cf91011..94bbd18 100644 --- a/test/Makefile +++ b/test/Makefile @@ -20,7 +20,7 @@ all_targets += poll poll-cancel ring-leak fsync io_uring_setup io_uring_register connect 7ad0e4b2f83c-test submit-reuse fallocate open-close \ file-update statx accept-reuse poll-v-poll fadvise madvise \ short-read openat2 probe shared-wq personality eventfd \ - send_recv eventfd-ring across-fork + send_recv eventfd-ring across-fork splice include ../Makefile.quiet @@ -47,7 +47,7 @@ test_srcs := poll.c poll-cancel.c ring-leak.c fsync.c io_uring_setup.c \ 7ad0e4b2f83c-test.c submit-reuse.c fallocate.c open-close.c \ file-update.c statx.c accept-reuse.c poll-v-poll.c fadvise.c \ madvise.c short-read.c openat2.c probe.c shared-wq.c \ - personality.c eventfd.c eventfd-ring.c across-fork.c + personality.c eventfd.c eventfd-ring.c across-fork.c splice.c test_objs := $(patsubst %.c,%.ol,$(test_srcs)) diff --git a/test/splice.c b/test/splice.c new file mode 100644 index 0000000..92b3195 --- /dev/null +++ b/test/splice.c @@ -0,0 +1,138 @@ +#include +#include +#include +#include +#include +#include +#include + +#include "liburing.h" + +static int copy_single(struct io_uring *ring, + int fd_in, loff_t off_in, + int fd_out, loff_t off_out, + unsigned int len, + unsigned flags1, unsigned flags2) +{ + struct io_uring_cqe *cqe; + struct io_uring_sqe *sqe; + int ret, i, err = -1; + int pipe_fds[2] = {-1, -1}; + + if (pipe(pipe_fds) < 0) + goto exit; + + sqe = io_uring_get_sqe(ring); + if (!sqe) { + printf("get sqe failed\n"); + goto exit; + } + io_uring_prep_splice(sqe, fd_in, off_in, pipe_fds[1], -1, + len, flags1); + sqe->user_data = 1; + sqe->flags = IOSQE_IO_LINK; + + sqe = io_uring_get_sqe(ring); + if (!sqe) { + printf("get sqe failed\n"); + goto exit; + } + io_uring_prep_splice(sqe, pipe_fds[0], -1, fd_out, off_out, + len, flags2); + sqe->user_data = 2; + + ret = io_uring_submit(ring); + if (ret <= 0) { + printf("sqe submit failed: %d\n", ret); + goto exit; + } + + for (i = 0; i < 2; i++) { + ret = io_uring_wait_cqe(ring, &cqe); + if (ret < 0 || cqe->res != len) { + printf("wait completion %d\n", cqe->res); + goto exit; + } + io_uring_cqe_seen(ring, cqe); + } + err = 0; +exit: + if (pipe_fds[0] >= 0) { + close(pipe_fds[0]); + close(pipe_fds[1]); + } + return err; +} + +static int test_splice(struct io_uring *ring) +{ + int ret, err = 1; + int len = 4 * 4096; + int fd_out = -1, fd_in = -1; + int fd_in_idx; + + fd_in = open("/dev/urandom", O_RDONLY); + if (fd_in < 0) + goto exit; + fd_out = memfd_create("splice_test_out_file", 0); + if (fd_out < 0) + goto exit; + if (ftruncate(fd_out, len) == -1) + goto exit; + + ret = copy_single(ring, fd_in, -1, fd_out, -1, len, + SPLICE_F_MOVE | SPLICE_F_MORE, 0); + if (ret) { + printf("basic splice-copy failed\n"); + goto exit; + } + + ret = copy_single(ring, fd_in, 0, fd_out, 0, len, + 0, SPLICE_F_MOVE | SPLICE_F_MORE); + if (ret) { + printf("basic splice with offset failed\n"); + goto exit; + } + + fd_in_idx = 0; + ret = io_uring_register_files(ring, &fd_in, 1); + if (ret) { + fprintf(stderr, "%s: register ret=%d\n", __FUNCTION__, ret); + goto exit; + } + + ret = copy_single(ring, fd_in_idx, 0, fd_out, 0, len, + SPLICE_F_FD_IN_FIXED, 0); + if (ret) { + printf("basic splice with reg files failed\n"); + goto exit; + } + + err = 0; +exit: + if (fd_out >= 0) + close(fd_out); + if (fd_in >= 0) + close(fd_in); + return err; +} + +int main(int argc, char *argv[]) +{ + struct io_uring ring; + int ret; + + ret = io_uring_queue_init(8, &ring, 0); + if (ret) { + printf("ring setup failed\n"); + return 1; + } + + ret = test_splice(&ring); + if (ret) { + printf("test_splice failed %i %i\n", ret, errno); + return ret; + } + + return 0; +} -- 2.24.0