| 18 | #define OUT_FD "/dev/zero" |
| 19 | |
| 20 | static int test(struct io_uring *ring) |
| 21 | { |
| 22 | struct iovec iov[BUFFERS]; |
| 23 | struct io_uring_sqe *sqe; |
| 24 | struct io_uring_cqe *cqe; |
| 25 | int ret, fd_in, fd_out, i; |
| 26 | |
| 27 | fd_in = open(IN_FD, O_RDONLY, 0644); |
| 28 | if (fd_in < 0) { |
| 29 | perror("open in"); |
| 30 | return 1; |
| 31 | } |
| 32 | |
| 33 | fd_out = open(OUT_FD, O_RDWR, 0644); |
| 34 | if (fd_out < 0) { |
| 35 | perror("open out"); |
| 36 | return 1; |
| 37 | } |
| 38 | |
| 39 | for (i = 0; i < BUFFERS; i++) { |
| 40 | iov[i].iov_base = malloc(BUF_SIZE); |
| 41 | iov[i].iov_len = BUF_SIZE; |
| 42 | memset(iov[i].iov_base, 0, BUF_SIZE); |
| 43 | } |
| 44 | |
| 45 | ret = io_uring_register_buffers(ring, iov, BUFFERS); |
| 46 | if (ret) { |
| 47 | fprintf(stderr, "Error registering buffers: %s", strerror(-ret)); |
| 48 | return 1; |
| 49 | } |
| 50 | |
| 51 | sqe = io_uring_get_sqe(ring); |
| 52 | if (!sqe) { |
| 53 | fprintf(stderr, "Could not get SQE.\n"); |
| 54 | return 1; |
| 55 | } |
| 56 | |
| 57 | io_uring_prep_read_fixed(sqe, fd_in, iov[0].iov_base, BUF_SIZE, 0, 0); |
| 58 | io_uring_submit(ring); |
| 59 | |
| 60 | ret = io_uring_wait_cqe(ring, &cqe); |
| 61 | if (ret < 0) { |
| 62 | fprintf(stderr, "Error waiting for completion: %s\n", strerror(-ret)); |
| 63 | return 1; |
| 64 | } |
| 65 | |
| 66 | if (cqe->res < 0) { |
| 67 | fprintf(stderr, "Error in async operation: %s\n", strerror(-cqe->res)); |
| 68 | return 1; |
| 69 | } |
| 70 | io_uring_cqe_seen(ring, cqe); |
| 71 | |
| 72 | sqe = io_uring_get_sqe(ring); |
| 73 | if (!sqe) { |
| 74 | fprintf(stderr, "Could not get SQE.\n"); |
| 75 | return 1; |
| 76 | } |
| 77 | io_uring_prep_write_fixed(sqe, fd_out, iov[0].iov_base, BUF_SIZE, 0, 0); |
no test coverage detected