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Message-Id: <36f4ef4d1ef17258aee2f5413cb5bb1819b13693.1581803684.git.asml.silence@gmail.com>
Date: Sun, 16 Feb 2020 01:07:36 +0300
From: Pavel Begunkov <asml.silence@...il.com>
To: Jens Axboe <axboe@...nel.dk>, io-uring@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH liburing 2/2] test/splice: add basic splice tests
Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
---
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 <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+
+#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
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