| /* |
| * Description: check that STDOUT write works |
| */ |
| #include <errno.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <fcntl.h> |
| |
| #include "liburing.h" |
| |
| static int test_pipe_io(struct io_uring *ring) |
| { |
| struct io_uring_cqe *cqe; |
| struct io_uring_sqe *sqe; |
| struct iovec vecs; |
| int ret; |
| |
| vecs.iov_base = "This is a pipe test\n"; |
| vecs.iov_len = strlen(vecs.iov_base); |
| |
| sqe = io_uring_get_sqe(ring); |
| if (!sqe) { |
| printf("get sqe failed\n"); |
| goto err; |
| } |
| io_uring_prep_writev(sqe, STDOUT_FILENO, &vecs, 1, 0); |
| |
| ret = io_uring_submit(ring); |
| if (ret < 1) { |
| printf("Submitted only %d\n", ret); |
| goto err; |
| } else if (ret < 0) { |
| printf("sqe submit failed: %d\n", ret); |
| goto err; |
| } |
| |
| ret = io_uring_wait_cqe(ring, &cqe); |
| if (ret < 0) { |
| printf("wait completion %d\n", ret); |
| goto err; |
| } |
| if (cqe->res < 0) { |
| printf("STDOUT write error: %s\n", strerror(-cqe->res)); |
| goto err; |
| } |
| if (cqe->res != vecs.iov_len) { |
| printf("Got %d write, wanted %d\n", cqe->res, (int)vecs.iov_len); |
| goto err; |
| } |
| io_uring_cqe_seen(ring, cqe); |
| |
| return 0; |
| err: |
| return 1; |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| struct io_uring ring; |
| int ret; |
| |
| ret = io_uring_queue_init(8, &ring, 0); |
| if (ret) { |
| printf("ring setup failed\n"); |
| return 1; |
| |
| } |
| |
| ret = test_pipe_io(&ring); |
| if (ret) { |
| printf("test_pipe_io failed\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |