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/*
* Description: test io_uring poll cancel handling
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <sys/poll.h>
#include <sys/wait.h>
#include <sys/signal.h>
#include "liburing.h"
struct poll_data {
unsigned is_poll;
unsigned is_cancel;
};
static void sig_alrm(int sig)
{
printf("Timed out!\n");
exit(1);
}
int main(int argc, char *argv[])
{
struct io_uring ring;
int pipe1[2];
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
struct poll_data *pd, pds[2];
struct sigaction act;
int ret;
if (pipe(pipe1) != 0) {
printf("pipe failed\n");
return 1;
}
ret = io_uring_queue_init(2, &ring, 0);
if (ret) {
printf("child: ring setup failed\n");
return 1;
}
memset(&act, 0, sizeof(act));
act.sa_handler = sig_alrm;
act.sa_flags = SA_RESTART;
sigaction(SIGALRM, &act, NULL);
alarm(1);
sqe = io_uring_get_sqe(&ring);
if (!sqe) {
printf("child: get sqe failed\n");
return 1;
}
io_uring_prep_poll_add(sqe, pipe1[0], POLLIN);
pds[0].is_poll = 1;
pds[0].is_cancel = 0;
io_uring_sqe_set_data(sqe, &pds[0]);
ret = io_uring_submit(&ring);
if (ret <= 0) {
printf("child: sqe submit failed\n");
return 1;
}
sqe = io_uring_get_sqe(&ring);
if (!sqe) {
printf("child: get sqe failed\n");
return 1;
}
pds[1].is_poll = 0;
pds[1].is_cancel = 0;
io_uring_prep_poll_remove(sqe, &pds[0]);
io_uring_sqe_set_data(sqe, &pds[1]);
ret = io_uring_submit(&ring);
if (ret <= 0) {
printf("child: sqe submit failed\n");
return 1;
}
ret = io_uring_wait_cqe(&ring, &cqe);
if (ret < 0) {
printf("child: get cqe failed\n");
return 1;
}
pd = io_uring_cqe_get_data(cqe);
if (cqe->res != 0) {
printf("sqe (add=%d/remove=%d) failed with %ld\n", pd->is_poll,
pd->is_cancel, (long) cqe->res);
return 1;
}
io_uring_cqe_seen(&ring, cqe);
ret = io_uring_wait_cqe(&ring, &cqe);
if (ret < 0) {
printf("parent: get failed\n");
return 1;
}
pd = io_uring_cqe_get_data(cqe);
if (cqe->res != 0) {
printf("sqe (add=%d/remove=%d) failed with %ld\n", pd->is_poll,
pd->is_cancel, (long) cqe->res);
return 1;
}
io_uring_cqe_seen(&ring, cqe);
return 0;
}
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