| 36 | } |
| 37 | |
| 38 | static int test(const char *filename, int dio, int async) |
| 39 | { |
| 40 | struct io_uring_sqe *sqe; |
| 41 | struct io_uring_cqe *cqe; |
| 42 | struct io_uring ring; |
| 43 | struct io_uring_buf_ring *br; |
| 44 | int ret, fd, i; |
| 45 | char *buf; |
| 46 | void *ptr; |
| 47 | |
| 48 | ret = io_uring_queue_init(NR_BUFS, &ring, 0); |
| 49 | if (ret) { |
| 50 | fprintf(stderr, "ring setup failed: %d\n", ret); |
| 51 | return 1; |
| 52 | } |
| 53 | |
| 54 | if (dio) { |
| 55 | fd = open(filename, O_DIRECT | O_RDONLY); |
| 56 | if (fd < 0 && errno == EINVAL) |
| 57 | return T_EXIT_SKIP; |
| 58 | } else { |
| 59 | fd = open(filename, O_RDONLY); |
| 60 | } |
| 61 | if (fd < 0) { |
| 62 | if (errno == EPERM || errno == EACCES) |
| 63 | return T_EXIT_SKIP; |
| 64 | perror("open"); |
| 65 | return 1; |
| 66 | } |
| 67 | |
| 68 | posix_fadvise(fd, 0, FSIZE, POSIX_FADV_DONTNEED); |
| 69 | |
| 70 | if (posix_memalign((void **) &buf, 4096, FSIZE)) |
| 71 | return 1; |
| 72 | |
| 73 | br = io_uring_setup_buf_ring(&ring, NR_BUFS, 1, 0, &ret); |
| 74 | if (!br) { |
| 75 | if (ret == -EINVAL) { |
| 76 | no_buf_ring = 1; |
| 77 | return 0; |
| 78 | } |
| 79 | fprintf(stderr, "Buffer ring register failed %d\n", ret); |
| 80 | return 1; |
| 81 | } |
| 82 | |
| 83 | ptr = buf; |
| 84 | for (i = 0; i < NR_BUFS; i++) { |
| 85 | io_uring_buf_ring_add(br, ptr, BUF_SIZE, i + 1, BR_MASK, i); |
| 86 | ptr += BUF_SIZE; |
| 87 | } |
| 88 | io_uring_buf_ring_advance(br, NR_BUFS); |
| 89 | |
| 90 | for (i = 0; i < NR_BUFS / 2; i++) { |
| 91 | sqe = io_uring_get_sqe(&ring); |
| 92 | io_uring_prep_read(sqe, fd, NULL, BUF_SIZE, i * BUF_SIZE); |
| 93 | sqe->buf_group = 1; |
| 94 | sqe->flags |= IOSQE_BUFFER_SELECT; |
| 95 | if (async && !(i & 1)) |
no test coverage detected