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/* SPDX-License-Identifier: MIT */
/*
* Test fixed buffers with non-iterators.
*
* Taken from: https://github.com/axboe/liburing/issues/549
*/
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <stdlib.h>
#include "liburing.h"
#include "helpers.h"
#define BUF_SIZE 4096
#define BUFFERS 1
#define IN_FD "/dev/urandom"
#define OUT_FD "/dev/zero"
static int test(struct io_uring *ring)
{
struct iovec iov[BUFFERS];
struct io_uring_sqe *sqe;
struct io_uring_cqe *cqe;
int ret, fd_in, fd_out, i;
fd_in = open(IN_FD, O_RDONLY, 0644);
if (fd_in < 0) {
perror("open in");
return 1;
}
fd_out = open(OUT_FD, O_RDWR, 0644);
if (fd_out < 0) {
perror("open out");
return 1;
}
for (i = 0; i < BUFFERS; i++) {
iov[i].iov_base = malloc(BUF_SIZE);
iov[i].iov_len = BUF_SIZE;
memset(iov[i].iov_base, 0, BUF_SIZE);
}
ret = io_uring_register_buffers(ring, iov, BUFFERS);
if (ret) {
fprintf(stderr, "Error registering buffers: %s", strerror(-ret));
return 1;
}
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "Could not get SQE.\n");
return 1;
}
io_uring_prep_read_fixed(sqe, fd_in, iov[0].iov_base, BUF_SIZE, 0, 0);
io_uring_submit(ring);
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "Error waiting for completion: %s\n", strerror(-ret));
return 1;
}
if (cqe->res < 0) {
fprintf(stderr, "Error in async operation: %s\n", strerror(-cqe->res));
return 1;
}
io_uring_cqe_seen(ring, cqe);
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "Could not get SQE.\n");
return 1;
}
io_uring_prep_write_fixed(sqe, fd_out, iov[0].iov_base, BUF_SIZE, 0, 0);
io_uring_submit(ring);
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "Error waiting for completion: %s\n", strerror(-ret));
return 1;
}
if (cqe->res < 0) {
fprintf(stderr, "Error in async operation: %s\n", strerror(-cqe->res));
return 1;
}
io_uring_cqe_seen(ring, cqe);
return 0;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
int ret;
if (argc > 1)
return 0;
ret = t_create_ring(8, &ring, 0);
if (ret == T_SETUP_SKIP)
return 0;
else if (ret < 0)
return 1;
ret = test(&ring);
if (ret) {
fprintf(stderr, "Test failed\n");
return 1;
}
io_uring_queue_exit(&ring);
return 0;
}
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