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/* SPDX-License-Identifier: MIT */
/*
* Test case for SQPOLL missing a 'ret' clear in case of busy.
*
* Heavily based on a test case from
* Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include "helpers.h"
#include "liburing.h"
#define FILE_SIZE (128 * 1024)
int main(int argc, char *argv[])
{
struct io_uring ring;
int i, fd, ret;
struct io_uring_sqe *sqe;
struct io_uring_cqe *cqe;
struct iovec *iovecs;
struct io_uring_params p;
char *fname;
void *buf;
if (geteuid()) {
fprintf(stdout, "Test requires root, skipping\n");
return 0;
}
memset(&p, 0, sizeof(p));
p.flags = IORING_SETUP_SQPOLL;
ret = t_create_ring_params(4, &ring, &p);
if (ret == T_SETUP_SKIP)
return 0;
else if (ret < 0)
return 1;
if (argc > 1) {
fname = argv[1];
} else {
fname = ".sqpoll.tmp";
t_create_file(fname, FILE_SIZE);
}
fd = open(fname, O_RDONLY | O_DIRECT);
if (fd < 0) {
perror("open");
goto out;
}
iovecs = t_calloc(10, sizeof(struct iovec));
for (i = 0; i < 10; i++) {
t_posix_memalign(&buf, 4096, 4096);
iovecs[i].iov_base = buf;
iovecs[i].iov_len = 4096;
}
ret = io_uring_register_files(&ring, &fd, 1);
if (ret < 0) {
fprintf(stderr, "register files %d\n", ret);
goto out;
}
for (i = 0; i < 10; i++) {
sqe = io_uring_get_sqe(&ring);
if (!sqe)
break;
io_uring_prep_readv(sqe, 0, &iovecs[i], 1, 0);
sqe->flags |= IOSQE_FIXED_FILE;
ret = io_uring_submit(&ring);
usleep(1000);
}
for (i = 0; i < 10; i++) {
ret = io_uring_wait_cqe(&ring, &cqe);
if (ret) {
fprintf(stderr, "wait_cqe=%d\n", ret);
break;
}
if (cqe->res != 4096) {
fprintf(stderr, "ret=%d, wanted 4096\n", cqe->res);
ret = 1;
break;
}
io_uring_cqe_seen(&ring, cqe);
}
close(fd);
out:
if (fname != argv[1])
unlink(fname);
io_uring_queue_exit(&ring);
return ret;
}
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