49 lines
928 B
C
49 lines
928 B
C
/* SPDX-License-Identifier: MIT */
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/*
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* Description: Test poll against ring itself. A buggy kernel will end up
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* having io_wq_* workers pending, as the circular reference
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* will prevent full exit.
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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 <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/poll.h>
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#include "liburing.h"
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int main(int argc, char *argv[])
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{
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struct io_uring_sqe *sqe;
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struct io_uring ring;
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int ret;
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if (argc > 1)
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return 0;
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ret = io_uring_queue_init(1, &ring, 0);
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if (ret) {
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fprintf(stderr, "child: ring setup failed: %d\n", ret);
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return 1;
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}
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sqe = io_uring_get_sqe(&ring);
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if (!sqe) {
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fprintf(stderr, "get sqe failed\n");
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return 1;
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}
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io_uring_prep_poll_add(sqe, ring.ring_fd, POLLIN);
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io_uring_sqe_set_data(sqe, sqe);
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ret = io_uring_submit(&ring);
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if (ret <= 0) {
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fprintf(stderr, "child: sqe submit failed: %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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