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