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#include "../config-host.h"
/* SPDX-License-Identifier: MIT */
/*
* Check split up read is handled correctly
*/
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <string.h>
#include "liburing.h"
#define BUFSIZE 16384
#define BUFFERS 16
int main(int argc, char *argv[])
{
char buf[BUFSIZE], wbuf[BUFSIZE];
struct iovec iov[BUFFERS];
struct io_uring_params p = { };
struct io_uring ring;
struct io_uring_sqe *sqe;
struct io_uring_cqe *cqe;
int ret, i, fds[2];
void *ptr;
if (pipe(fds) < 0) {
perror("pipe");
return 1;
}
ptr = buf;
for (i = 0; i < BUFFERS; i++) {
unsigned bsize = BUFSIZE / BUFFERS;
iov[i].iov_base = ptr;
iov[i].iov_len = bsize;
ptr += bsize;
}
ret = io_uring_queue_init_params(8, &ring, &p);
if (ret) {
fprintf(stderr, "queue_init: %d\n", ret);
return 1;
}
if (!(p.features & IORING_FEAT_SUBMIT_STABLE)) {
fprintf(stdout, "FEAT_SUBMIT_STABLE not there, skipping\n");
return 0;
}
ptr = wbuf;
memset(ptr, 0x11, sizeof(wbuf) / 2);
ptr += sizeof(wbuf) / 2;
memset(ptr, 0x22, sizeof(wbuf) / 2);
ret = write(fds[1], wbuf, sizeof(wbuf) / 2);
if (ret != sizeof(wbuf) / 2) {
fprintf(stderr, "Bad write\n");
ret = 1;
goto err;
}
sqe = io_uring_get_sqe(&ring);
io_uring_prep_readv(sqe, fds[0], iov, BUFFERS, 0);
ret = io_uring_submit(&ring);
if (ret != 1) {
fprintf(stderr, "submit: %d\n", ret);
return 1;
}
for (i = 0; i < BUFFERS; i++) {
iov[i].iov_base = NULL;
iov[i].iov_len = 1000000;
}
ret = write(fds[1], ptr, sizeof(wbuf) / 2);
if (ret != sizeof(wbuf) / 2) {
fprintf(stderr, "Bad write\n");
ret = 1;
goto err;
}
ret = io_uring_wait_cqe(&ring, &cqe);
if (ret) {
fprintf(stderr, "wait: %d\n", ret);
return 1;
}
if (cqe->res < 0) {
fprintf(stderr, "Read error: %s\n", strerror(-cqe->res));
return 1;
} else if (cqe->res != sizeof(wbuf)) {
/* ignore short read, not a failure */
goto err;
}
io_uring_cqe_seen(&ring, cqe);
ret = memcmp(wbuf, buf, sizeof(wbuf));
if (ret)
fprintf(stderr, "Read data mismatch\n");
err:
io_uring_queue_exit(&ring);
return ret;
}
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