| /* SPDX-License-Identifier: MIT */ |
| /* |
| * Description: run various file registration tests |
| * |
| */ |
| #include <errno.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <fcntl.h> |
| #include <assert.h> |
| |
| #include "../src/syscall.h" |
| #include "helpers.h" |
| #include "liburing.h" |
| |
| static int pipes[2]; |
| |
| enum { |
| TEST_IORING_RSRC_FILE = 0, |
| TEST_IORING_RSRC_BUFFER = 1, |
| }; |
| |
| static bool check_cq_empty(struct io_uring *ring) |
| { |
| struct io_uring_cqe *cqe = NULL; |
| int ret; |
| |
| usleep(1000); /* doesn't happen immediately, so wait */ |
| ret = io_uring_peek_cqe(ring, &cqe); /* nothing should be there */ |
| return ret == -EAGAIN; |
| } |
| |
| /* |
| * There are io_uring_register_buffers_tags() and other wrappers, |
| * but they may change, so hand-code to specifically test this ABI. |
| */ |
| static int register_rsrc(struct io_uring *ring, int type, int nr, |
| const void *arg, const __u64 *tags) |
| { |
| struct io_uring_rsrc_register reg; |
| int ret, reg_type; |
| |
| memset(®, 0, sizeof(reg)); |
| reg.nr = nr; |
| reg.data = (__u64)(uintptr_t)arg; |
| reg.tags = (__u64)(uintptr_t)tags; |
| |
| reg_type = IORING_REGISTER_FILES2; |
| if (type != TEST_IORING_RSRC_FILE) |
| reg_type = IORING_REGISTER_BUFFERS2; |
| |
| ret = __sys_io_uring_register(ring->ring_fd, reg_type, |
| ®, sizeof(reg)); |
| return ret ? -errno : 0; |
| } |
| |
| /* |
| * There are io_uring_register_buffers_update_tag() and other wrappers, |
| * but they may change, so hand-code to specifically test this ABI. |
| */ |
| static int update_rsrc(struct io_uring *ring, int type, int nr, int off, |
| const void *arg, const __u64 *tags) |
| { |
| struct io_uring_rsrc_update2 up; |
| int ret, up_type; |
| |
| memset(&up, 0, sizeof(up)); |
| up.offset = off; |
| up.data = (__u64)(uintptr_t)arg; |
| up.tags = (__u64)(uintptr_t)tags; |
| up.nr = nr; |
| |
| up_type = IORING_REGISTER_FILES_UPDATE2; |
| if (type != TEST_IORING_RSRC_FILE) |
| up_type = IORING_REGISTER_BUFFERS_UPDATE; |
| ret = __sys_io_uring_register(ring->ring_fd, up_type, |
| &up, sizeof(up)); |
| return ret < 0 ? -errno : ret; |
| } |
| |
| static bool has_rsrc_update(void) |
| { |
| struct io_uring ring; |
| int ret; |
| |
| ret = io_uring_queue_init(1, &ring, 0); |
| if (ret) { |
| fprintf(stderr, "io_uring_queue_init() failed, %d\n", ret); |
| exit(1); |
| } |
| |
| ret = ring.features & IORING_FEAT_RSRC_TAGS; |
| io_uring_queue_exit(&ring); |
| return ret; |
| } |
| |
| static int test_tags_generic(int nr, int type, void *rsrc, int ring_flags) |
| { |
| struct io_uring_cqe *cqe = NULL; |
| struct io_uring ring; |
| int i, ret; |
| __u64 *tags; |
| |
| tags = malloc(nr * sizeof(*tags)); |
| if (!tags) |
| return 1; |
| for (i = 0; i < nr; i++) |
| tags[i] = i + 1; |
| ret = io_uring_queue_init(1, &ring, 0); |
| if (ret) { |
| printf("ring setup failed\n"); |
| return 1; |
| } |
| |
| ret = register_rsrc(&ring, type, nr, rsrc, tags); |
| if (ret) { |
| fprintf(stderr, "rsrc register failed %i\n", ret); |
| return 1; |
| } |
| |
| /* test that tags are set */ |
| tags[0] = 666; |
| ret = update_rsrc(&ring, type, 1, 0, rsrc, &tags[0]); |
| assert(ret == 1); |
| ret = io_uring_wait_cqe(&ring, &cqe); |
| assert(!ret && cqe->user_data == 1); |
| io_uring_cqe_seen(&ring, cqe); |
| |
| /* test that tags are updated */ |
| tags[0] = 0; |
| ret = update_rsrc(&ring, type, 1, 0, rsrc, &tags[0]); |
| assert(ret == 1); |
| ret = io_uring_wait_cqe(&ring, &cqe); |
| assert(!ret && cqe->user_data == 666); |
| io_uring_cqe_seen(&ring, cqe); |
| |
| /* test tag=0 doesn't emit CQE */ |
| tags[0] = 1; |
| ret = update_rsrc(&ring, type, 1, 0, rsrc, &tags[0]); |
| assert(ret == 1); |
| assert(check_cq_empty(&ring)); |
| |
| free(tags); |
| io_uring_queue_exit(&ring); |
| return 0; |
| } |
| |
| static int test_buffers_update(void) |
| { |
| struct io_uring_sqe *sqe; |
| struct io_uring_cqe *cqe = NULL; |
| struct io_uring ring; |
| const int nr = 5; |
| int buf_idx = 1, i, ret; |
| int pipes[2]; |
| char tmp_buf[1024]; |
| char tmp_buf2[1024]; |
| struct iovec vecs[nr]; |
| __u64 tags[nr]; |
| |
| for (i = 0; i < nr; i++) { |
| vecs[i].iov_base = tmp_buf; |
| vecs[i].iov_len = 1024; |
| tags[i] = i + 1; |
| } |
| |
| ret = test_tags_generic(nr, TEST_IORING_RSRC_BUFFER, vecs, 0); |
| if (ret) |
| return 1; |
| |
| ret = io_uring_queue_init(1, &ring, 0); |
| if (ret) { |
| printf("ring setup failed\n"); |
| return 1; |
| } |
| if (pipe(pipes) < 0) { |
| perror("pipe"); |
| return 1; |
| } |
| ret = register_rsrc(&ring, TEST_IORING_RSRC_BUFFER, nr, vecs, tags); |
| if (ret) { |
| fprintf(stderr, "rsrc register failed %i\n", ret); |
| return 1; |
| } |
| |
| /* test that CQE is not emmited before we're done with a buffer */ |
| sqe = io_uring_get_sqe(&ring); |
| io_uring_prep_read_fixed(sqe, pipes[0], tmp_buf, 10, 0, 0); |
| sqe->user_data = 100; |
| ret = io_uring_submit(&ring); |
| if (ret != 1) { |
| fprintf(stderr, "%s: got %d, wanted 1\n", __FUNCTION__, ret); |
| return 1; |
| } |
| ret = io_uring_peek_cqe(&ring, &cqe); |
| assert(ret == -EAGAIN); |
| |
| vecs[buf_idx].iov_base = tmp_buf2; |
| ret = update_rsrc(&ring, TEST_IORING_RSRC_BUFFER, 1, buf_idx, |
| &vecs[buf_idx], &tags[buf_idx]); |
| if (ret != 1) { |
| fprintf(stderr, "rsrc update failed %i %i\n", ret, errno); |
| return 1; |
| } |
| |
| ret = io_uring_peek_cqe(&ring, &cqe); /* nothing should be there */ |
| assert(ret == -EAGAIN); |
| close(pipes[0]); |
| close(pipes[1]); |
| |
| ret = io_uring_wait_cqe(&ring, &cqe); |
| assert(!ret && cqe->user_data == 100); |
| io_uring_cqe_seen(&ring, cqe); |
| ret = io_uring_wait_cqe(&ring, &cqe); |
| assert(!ret && cqe->user_data == buf_idx + 1); |
| io_uring_cqe_seen(&ring, cqe); |
| |
| io_uring_queue_exit(&ring); |
| return 0; |
| } |
| |
| static int test_buffers_empty_buffers(void) |
| { |
| struct io_uring_sqe *sqe; |
| struct io_uring_cqe *cqe = NULL; |
| struct io_uring ring; |
| const int nr = 5; |
| int ret, i; |
| char tmp_buf[1024]; |
| struct iovec vecs[nr]; |
| |
| for (i = 0; i < nr; i++) { |
| vecs[i].iov_base = 0; |
| vecs[i].iov_len = 0; |
| } |
| vecs[0].iov_base = tmp_buf; |
| vecs[0].iov_len = 10; |
| |
| ret = io_uring_queue_init(1, &ring, 0); |
| if (ret) { |
| printf("ring setup failed\n"); |
| return 1; |
| } |
| |
| ret = register_rsrc(&ring, TEST_IORING_RSRC_BUFFER, nr, vecs, NULL); |
| if (ret) { |
| fprintf(stderr, "rsrc register failed %i\n", ret); |
| return 1; |
| } |
| |
| /* empty to buffer */ |
| vecs[1].iov_base = tmp_buf; |
| vecs[1].iov_len = 10; |
| ret = update_rsrc(&ring, TEST_IORING_RSRC_BUFFER, 1, 1, &vecs[1], NULL); |
| if (ret != 1) { |
| fprintf(stderr, "rsrc update failed %i %i\n", ret, errno); |
| return 1; |
| } |
| |
| /* buffer to empty */ |
| vecs[0].iov_base = 0; |
| vecs[0].iov_len = 0; |
| ret = update_rsrc(&ring, TEST_IORING_RSRC_BUFFER, 1, 0, &vecs[0], NULL); |
| if (ret != 1) { |
| fprintf(stderr, "rsrc update failed %i %i\n", ret, errno); |
| return 1; |
| } |
| |
| /* zero to zero is ok */ |
| ret = update_rsrc(&ring, TEST_IORING_RSRC_BUFFER, 1, 2, &vecs[2], NULL); |
| if (ret != 1) { |
| fprintf(stderr, "rsrc update failed %i %i\n", ret, errno); |
| return 1; |
| } |
| |
| /* empty buf with non-zero len fails */ |
| vecs[3].iov_base = 0; |
| vecs[3].iov_len = 1; |
| ret = update_rsrc(&ring, TEST_IORING_RSRC_BUFFER, 1, 3, &vecs[3], NULL); |
| if (ret >= 0) { |
| fprintf(stderr, "rsrc update failed %i %i\n", ret, errno); |
| return 1; |
| } |
| |
| /* test rw on empty ubuf is failed */ |
| sqe = io_uring_get_sqe(&ring); |
| io_uring_prep_read_fixed(sqe, pipes[0], tmp_buf, 10, 0, 2); |
| sqe->user_data = 100; |
| ret = io_uring_submit(&ring); |
| if (ret != 1) { |
| fprintf(stderr, "%s: got %d, wanted 1\n", __FUNCTION__, ret); |
| return 1; |
| } |
| ret = io_uring_wait_cqe(&ring, &cqe); |
| assert(!ret && cqe->user_data == 100); |
| assert(cqe->res); |
| io_uring_cqe_seen(&ring, cqe); |
| |
| sqe = io_uring_get_sqe(&ring); |
| io_uring_prep_read_fixed(sqe, pipes[0], tmp_buf, 0, 0, 2); |
| sqe->user_data = 100; |
| ret = io_uring_submit(&ring); |
| if (ret != 1) { |
| fprintf(stderr, "%s: got %d, wanted 1\n", __FUNCTION__, ret); |
| return 1; |
| } |
| ret = io_uring_wait_cqe(&ring, &cqe); |
| assert(!ret && cqe->user_data == 100); |
| assert(cqe->res); |
| io_uring_cqe_seen(&ring, cqe); |
| |
| io_uring_queue_exit(&ring); |
| return 0; |
| } |
| |
| |
| static int test_files(int ring_flags) |
| { |
| struct io_uring_cqe *cqe = NULL; |
| struct io_uring ring; |
| const int nr = 50; |
| int off = 5, i, ret, fd; |
| __s32 files[nr]; |
| __u64 tags[nr], tag; |
| |
| for (i = 0; i < nr; ++i) { |
| files[i] = pipes[0]; |
| tags[i] = i + 1; |
| } |
| |
| ret = test_tags_generic(nr, TEST_IORING_RSRC_FILE, files, ring_flags); |
| if (ret) |
| return 1; |
| |
| ret = io_uring_queue_init(1, &ring, ring_flags); |
| if (ret) { |
| printf("ring setup failed\n"); |
| return 1; |
| } |
| ret = register_rsrc(&ring, TEST_IORING_RSRC_FILE, nr, files, tags); |
| if (ret) { |
| fprintf(stderr, "rsrc register failed %i\n", ret); |
| return 1; |
| } |
| |
| /* check update did update tag */ |
| fd = -1; |
| ret = io_uring_register_files_update(&ring, off, &fd, 1); |
| assert(ret == 1); |
| ret = io_uring_wait_cqe(&ring, &cqe); |
| assert(!ret && cqe->user_data == tags[off]); |
| io_uring_cqe_seen(&ring, cqe); |
| |
| /* remove removed file, shouldn't emit old tag */ |
| ret = io_uring_register_files_update(&ring, off, &fd, 1); |
| assert(ret <= 1); |
| assert(check_cq_empty(&ring)); |
| |
| /* non-zero tag with remove update is disallowed */ |
| tag = 1; |
| fd = -1; |
| ret = update_rsrc(&ring, TEST_IORING_RSRC_FILE, 1, off + 1, &fd, &tag); |
| assert(ret); |
| |
| io_uring_queue_exit(&ring); |
| return 0; |
| } |
| |
| static int test_notag(void) |
| { |
| struct io_uring_cqe *cqe = NULL; |
| struct io_uring ring; |
| int i, ret, fd; |
| const int nr = 50; |
| int files[nr]; |
| |
| ret = io_uring_queue_init(1, &ring, 0); |
| if (ret) { |
| printf("ring setup failed\n"); |
| return 1; |
| } |
| for (i = 0; i < nr; ++i) |
| files[i] = pipes[0]; |
| |
| ret = io_uring_register_files(&ring, files, nr); |
| assert(!ret); |
| |
| /* default register, update shouldn't emit CQE */ |
| fd = -1; |
| ret = io_uring_register_files_update(&ring, 0, &fd, 1); |
| assert(ret == 1); |
| assert(check_cq_empty(&ring)); |
| |
| ret = io_uring_unregister_files(&ring); |
| assert(!ret); |
| ret = io_uring_peek_cqe(&ring, &cqe); /* nothing should be there */ |
| assert(ret); |
| |
| io_uring_queue_exit(&ring); |
| return 0; |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| int ring_flags[] = {0, IORING_SETUP_IOPOLL, IORING_SETUP_SQPOLL}; |
| int i, ret; |
| |
| if (argc > 1) |
| return 0; |
| if (!has_rsrc_update()) { |
| fprintf(stderr, "doesn't support rsrc tags, skip\n"); |
| return 0; |
| } |
| |
| if (pipe(pipes) < 0) { |
| perror("pipe"); |
| return 1; |
| } |
| |
| ret = test_notag(); |
| if (ret) { |
| printf("test_notag failed\n"); |
| return ret; |
| } |
| |
| for (i = 0; i < sizeof(ring_flags) / sizeof(ring_flags[0]); i++) { |
| ret = test_files(ring_flags[i]); |
| if (ret) { |
| printf("test_tag failed, type %i\n", i); |
| return ret; |
| } |
| } |
| |
| ret = test_buffers_update(); |
| if (ret) { |
| printf("test_buffers_update failed\n"); |
| return ret; |
| } |
| |
| ret = test_buffers_empty_buffers(); |
| if (ret) { |
| printf("test_buffers_empty_buffers failed\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |