mirror of
https://github.com/openharmony/third_party_liburing.git
synced 2026-07-20 22:58:41 -04:00
ohci1
4b8f3098a5
Co-authored-by: Pavel Begunkov<asml.silence@gmail.com> Co-authored-by: Guillem Jover<guillem@hadrons.org> Co-authored-by: Jens Axboe<axboe@kernel.dk> Co-authored-by: Khem Raj<raj.khem@gmail.com> Co-authored-by: Michael de Lang<kingoipo@gmail.com> Co-authored-by: David Disseldorp<ddiss@suse.de> Co-authored-by: Ming Lei<ming.lei@redhat.com>
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/* SPDX-License-Identifier: MIT */
|
|
/*
|
|
* Description: test that having a command overwrite the provided ring
|
|
* buffer itself doesn't impact committing of the received
|
|
* length at completion time. Based on a test case posted
|
|
* here:
|
|
*
|
|
* https://lore.kernel.org/io-uring/tencent_2DEFFED135071FB225305A65D1688B303A09@qq.com/
|
|
*
|
|
*/
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include "liburing.h"
|
|
#include "helpers.h"
|
|
|
|
#define BGID 0
|
|
#define RENTRIES 2
|
|
#define RMASK (RENTRIES - 1)
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
struct io_uring_buf_ring *br;
|
|
struct io_uring_sqe *sqe;
|
|
struct io_uring ring;
|
|
void *send_buf;
|
|
int ret, fds[2];
|
|
|
|
if (argc > 1)
|
|
return T_EXIT_SKIP;
|
|
|
|
ret = io_uring_queue_init(1, &ring, IORING_SETUP_NO_SQARRAY);
|
|
if (ret) {
|
|
if (ret == -EINVAL)
|
|
return T_EXIT_SKIP;
|
|
fprintf(stderr, "ring setup: %d\n", ret);
|
|
return T_EXIT_FAIL;
|
|
}
|
|
|
|
br = io_uring_setup_buf_ring(&ring, RENTRIES, BGID, IOU_PBUF_RING_INC, &ret);
|
|
if (!br) {
|
|
if (ret == -EINVAL)
|
|
return T_EXIT_SKIP;
|
|
fprintf(stderr, "buf ring setup: %d\n", ret);
|
|
return T_EXIT_FAIL;
|
|
}
|
|
|
|
/*
|
|
* Use the buffer ring itself as the provided buffer address. Once the
|
|
* recv completes, it will have zero filled the buffer addr/len.
|
|
*/
|
|
io_uring_buf_ring_add(br, br, 4096, 0, RMASK, 0);
|
|
io_uring_buf_ring_advance(br, 1);
|
|
|
|
if (socketpair(AF_UNIX, SOCK_DGRAM, 0, fds) < 0) {
|
|
perror("socketpair");
|
|
return T_EXIT_FAIL;
|
|
}
|
|
|
|
/*
|
|
* Send zeroes, overwriting the buffer ring
|
|
*/
|
|
send_buf = calloc(1, 32);
|
|
ret = send(fds[0], send_buf, 32, MSG_DONTWAIT);
|
|
if (ret < 0) {
|
|
perror("send");
|
|
return T_EXIT_FAIL;
|
|
}
|
|
|
|
/*
|
|
* Do recv, picking the first buffer. When buffer is picked,
|
|
* it's still fully valid. By the time it needs to get committed,
|
|
* it will have invalid addr/len fields (all zeroes from the recv)
|
|
*/
|
|
sqe = io_uring_get_sqe(&ring);
|
|
io_uring_prep_recv(sqe, fds[1], NULL, 0, 0);
|
|
sqe->flags |= IOSQE_BUFFER_SELECT;
|
|
sqe->buf_index = BGID;
|
|
io_uring_submit_and_wait(&ring, 1);
|
|
|
|
io_uring_free_buf_ring(&ring, br, RENTRIES, BGID);
|
|
io_uring_queue_exit(&ring);
|
|
free(send_buf);
|
|
return T_EXIT_PASS;
|
|
}
|