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/* SPDX-License-Identifier: MIT */
/*
* Description: test eventfd registration+unregistration
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <poll.h>
#include <sys/eventfd.h>
#include "liburing.h"
int main(int argc, char *argv[])
{
struct io_uring_params p = {};
struct io_uring ring;
int ret, evfd[2], i;
if (argc > 1)
return 0;
ret = io_uring_queue_init_params(8, &ring, &p);
if (ret) {
fprintf(stderr, "ring setup failed: %d\n", ret);
return 1;
}
evfd[0] = eventfd(0, EFD_CLOEXEC);
evfd[1] = eventfd(0, EFD_CLOEXEC);
if (evfd[0] < 0 || evfd[1] < 0) {
perror("eventfd");
return 1;
}
ret = io_uring_register_eventfd(&ring, evfd[0]);
if (ret) {
fprintf(stderr, "failed to register evfd: %d\n", ret);
return 1;
}
/* Check that registrering again will get -EBUSY */
ret = io_uring_register_eventfd(&ring, evfd[1]);
if (ret != -EBUSY) {
fprintf(stderr, "unexpected 2nd register: %d\n", ret);
return 1;
}
close(evfd[1]);
ret = io_uring_unregister_eventfd(&ring);
if (ret) {
fprintf(stderr, "unexpected unregister: %d\n", ret);
return 1;
}
/* loop 100 registers/unregister */
for (i = 0; i < 100; i++) {
ret = io_uring_register_eventfd(&ring, evfd[0]);
if (ret) {
fprintf(stderr, "failed to register evfd: %d\n", ret);
return 1;
}
ret = io_uring_unregister_eventfd(&ring);
if (ret) {
fprintf(stderr, "unexpected unregister: %d\n", ret);
return 1;
}
}
close(evfd[0]);
return 0;
}
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