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/* SPDX-License-Identifier: MIT */
/*
* Test double poll tty write. A test case for the regression fixed by:
*
* commit 6e295a664efd083ac9a5c1a8130c45be1db0cde7
* Author: Jens Axboe <axboe@kernel.dk>
* Date: Tue Mar 22 13:11:28 2022 -0600
*
* io_uring: fix assuming triggered poll waitqueue is the single poll
*
*/
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include "liburing.h"
#include "helpers.h"
#define SQES 128
#define BUFSIZE 512
int main(int argc, char *argv[])
{
static char buf[BUFSIZE];
struct iovec vecs[SQES];
struct io_uring ring;
int ret, i, fd;
if (argc > 1)
return 0;
fd = open("/dev/ttyS0", O_RDWR | O_NONBLOCK);
if (fd < 0)
return 0;
ret = t_create_ring(SQES, &ring, 0);
if (ret == T_SETUP_SKIP)
return 0;
else if (ret < 0)
return 1;
for (i = 0; i < SQES; i++) {
struct io_uring_sqe *sqe;
sqe = io_uring_get_sqe(&ring);
vecs[i].iov_base = buf;
vecs[i].iov_len = sizeof(buf);
io_uring_prep_writev(sqe, fd, &vecs[i], 1, 0);
}
ret = io_uring_submit(&ring);
if (ret != SQES) {
fprintf(stderr, "submit: %d\n", ret);
return 1;
}
return 0;
}
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