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/* SPDX-License-Identifier: MIT */
/*
* Description: check that STDOUT write works
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include "helpers.h"
#include "liburing.h"
static int test_pipe_io_fixed(struct io_uring *ring)
{
const char str[] = "This is a fixed pipe test\n";
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
struct iovec vecs[2];
char buffer[128];
int i, ret, fds[2];
t_posix_memalign(&vecs[0].iov_base, 4096, 4096);
memcpy(vecs[0].iov_base, str, strlen(str));
vecs[0].iov_len = strlen(str);
if (pipe(fds) < 0) {
perror("pipe");
return 1;
}
ret = io_uring_register_buffers(ring, vecs, 1);
if (ret) {
fprintf(stderr, "Failed to register buffers: %d\n", ret);
return 1;
}
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_write_fixed(sqe, fds[1], vecs[0].iov_base,
vecs[0].iov_len, 0, 0);
sqe->user_data = 1;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
vecs[1].iov_base = buffer;
vecs[1].iov_len = sizeof(buffer);
io_uring_prep_readv(sqe, fds[0], &vecs[1], 1, 0);
sqe->user_data = 2;
ret = io_uring_submit(ring);
if (ret < 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
} else if (ret != 2) {
fprintf(stderr, "Submitted only %d\n", ret);
goto err;
}
for (i = 0; i < 2; i++) {
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
if (cqe->res < 0) {
fprintf(stderr, "I/O write error on %lu: %s\n",
(unsigned long) cqe->user_data,
strerror(-cqe->res));
goto err;
}
if (cqe->res != strlen(str)) {
fprintf(stderr, "Got %d bytes, wanted %d on %lu\n",
cqe->res, (int)strlen(str),
(unsigned long) cqe->user_data);
goto err;
}
if (cqe->user_data == 2 && memcmp(str, buffer, strlen(str))) {
fprintf(stderr, "read data mismatch\n");
goto err;
}
io_uring_cqe_seen(ring, cqe);
}
io_uring_unregister_buffers(ring);
free(vecs[0].iov_base);
return 0;
err:
return 1;
}
static int test_stdout_io_fixed(struct io_uring *ring)
{
const char str[] = "This is a fixed pipe test\n";
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
struct iovec vecs;
int ret;
t_posix_memalign(&vecs.iov_base, 4096, 4096);
memcpy(vecs.iov_base, str, strlen(str));
vecs.iov_len = strlen(str);
ret = io_uring_register_buffers(ring, &vecs, 1);
if (ret) {
fprintf(stderr, "Failed to register buffers: %d\n", ret);
return 1;
}
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_write_fixed(sqe, STDOUT_FILENO, vecs.iov_base, vecs.iov_len, 0, 0);
ret = io_uring_submit(ring);
if (ret < 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
} else if (ret < 1) {
fprintf(stderr, "Submitted only %d\n", ret);
goto err;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
if (cqe->res < 0) {
fprintf(stderr, "STDOUT write error: %s\n", strerror(-cqe->res));
goto err;
}
if (cqe->res != vecs.iov_len) {
fprintf(stderr, "Got %d write, wanted %d\n", cqe->res, (int)vecs.iov_len);
goto err;
}
io_uring_cqe_seen(ring, cqe);
io_uring_unregister_buffers(ring);
free(vecs.iov_base);
return 0;
err:
return 1;
}
static int test_stdout_io(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
struct iovec vecs;
int ret;
vecs.iov_base = "This is a pipe test\n";
vecs.iov_len = strlen(vecs.iov_base);
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_writev(sqe, STDOUT_FILENO, &vecs, 1, 0);
ret = io_uring_submit(ring);
if (ret < 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
} else if (ret < 1) {
fprintf(stderr, "Submitted only %d\n", ret);
goto err;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
if (cqe->res < 0) {
fprintf(stderr, "STDOUT write error: %s\n",
strerror(-cqe->res));
goto err;
}
if (cqe->res != vecs.iov_len) {
fprintf(stderr, "Got %d write, wanted %d\n", cqe->res,
(int)vecs.iov_len);
goto err;
}
io_uring_cqe_seen(ring, cqe);
return 0;
err:
return 1;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
int ret;
if (argc > 1)
return 0;
ret = io_uring_queue_init(8, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed\n");
return 1;
}
ret = test_stdout_io(&ring);
if (ret) {
fprintf(stderr, "test_pipe_io failed\n");
return ret;
}
ret = test_stdout_io_fixed(&ring);
if (ret) {
fprintf(stderr, "test_pipe_io_fixed failed\n");
return ret;
}
ret = test_pipe_io_fixed(&ring);
if (ret) {
fprintf(stderr, "test_pipe_io_fixed failed\n");
return ret;
}
return 0;
}
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