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|
/* SPDX-License-Identifier: MIT */
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <assert.h>
#include "liburing.h"
#include "helpers.h"
#define LINK_SIZE 6
#define TIMEOUT_USER_DATA (-1)
static int fds[2];
/* should be successfully submitted but fails during execution */
static void prep_exec_fail_req(struct io_uring_sqe *sqe)
{
io_uring_prep_write(sqe, fds[1], NULL, 100, 0);
}
static int test_link_success(struct io_uring *ring, int nr, bool skip_last)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret, i;
for (i = 0; i < nr; ++i) {
sqe = io_uring_get_sqe(ring);
io_uring_prep_nop(sqe);
if (i != nr - 1 || skip_last)
sqe->flags |= IOSQE_IO_LINK | IOSQE_CQE_SKIP_SUCCESS;
sqe->user_data = i;
}
ret = io_uring_submit(ring);
if (ret != nr) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
}
if (!skip_last) {
ret = io_uring_wait_cqe(ring, &cqe);
if (ret != 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
if (cqe->res != 0) {
fprintf(stderr, "nop failed: res %d\n", cqe->res);
goto err;
}
if (cqe->user_data != nr - 1) {
fprintf(stderr, "invalid user_data %i\n", (int)cqe->user_data);
goto err;
}
io_uring_cqe_seen(ring, cqe);
}
if (io_uring_peek_cqe(ring, &cqe) >= 0) {
fprintf(stderr, "single CQE expected %i\n", (int)cqe->user_data);
goto err;
}
return 0;
err:
return 1;
}
static int test_link_fail(struct io_uring *ring, int nr, int fail_idx)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret, i;
for (i = 0; i < nr; ++i) {
sqe = io_uring_get_sqe(ring);
if (i == fail_idx)
prep_exec_fail_req(sqe);
else
io_uring_prep_nop(sqe);
if (i != nr - 1)
sqe->flags |= IOSQE_IO_LINK | IOSQE_CQE_SKIP_SUCCESS;
sqe->user_data = i;
}
ret = io_uring_submit(ring);
if (ret != nr) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret != 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
if (!cqe->res || cqe->user_data != fail_idx) {
fprintf(stderr, "got: user_data %d res %d, expected data: %d\n",
(int)cqe->user_data, cqe->res, fail_idx);
goto err;
}
io_uring_cqe_seen(ring, cqe);
if (io_uring_peek_cqe(ring, &cqe) >= 0) {
fprintf(stderr, "single CQE expected %i\n", (int)cqe->user_data);
goto err;
}
return 0;
err:
return 1;
}
static int test_ltimeout_cancel(struct io_uring *ring, int nr, int tout_idx,
bool async, int fail_idx)
{
struct __kernel_timespec ts = {.tv_sec = 1, .tv_nsec = 0};
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret, i;
int e_res = 0, e_idx = nr - 1;
if (fail_idx >= 0) {
e_res = -EFAULT;
e_idx = fail_idx;
}
for (i = 0; i < nr; ++i) {
sqe = io_uring_get_sqe(ring);
if (i == fail_idx)
prep_exec_fail_req(sqe);
else
io_uring_prep_nop(sqe);
sqe->user_data = i;
sqe->flags |= IOSQE_IO_LINK;
if (async)
sqe->flags |= IOSQE_ASYNC;
if (i != nr - 1)
sqe->flags |= IOSQE_CQE_SKIP_SUCCESS;
if (i == tout_idx) {
sqe = io_uring_get_sqe(ring);
io_uring_prep_link_timeout(sqe, &ts, 0);
sqe->flags |= IOSQE_IO_LINK | IOSQE_CQE_SKIP_SUCCESS;
sqe->user_data = TIMEOUT_USER_DATA;
}
}
ret = io_uring_submit(ring);
if (ret != nr + 1) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret != 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
if (cqe->user_data != e_idx) {
fprintf(stderr, "invalid user_data %i\n", (int)cqe->user_data);
goto err;
}
if (cqe->res != e_res) {
fprintf(stderr, "unexpected res: %d\n", cqe->res);
goto err;
}
io_uring_cqe_seen(ring, cqe);
if (io_uring_peek_cqe(ring, &cqe) >= 0) {
fprintf(stderr, "single CQE expected %i\n", (int)cqe->user_data);
goto err;
}
return 0;
err:
return 1;
}
static int test_ltimeout_fire(struct io_uring *ring, bool async,
bool skip_main, bool skip_tout)
{
char buf[1];
struct __kernel_timespec ts = {.tv_sec = 0, .tv_nsec = 1000000};
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret, i;
int nr = 1 + !skip_tout;
sqe = io_uring_get_sqe(ring);
io_uring_prep_read(sqe, fds[0], buf, sizeof(buf), 0);
sqe->flags |= IOSQE_IO_LINK;
sqe->flags |= async ? IOSQE_ASYNC : 0;
sqe->flags |= skip_main ? IOSQE_CQE_SKIP_SUCCESS : 0;
sqe->user_data = 0;
sqe = io_uring_get_sqe(ring);
io_uring_prep_link_timeout(sqe, &ts, 0);
sqe->flags |= skip_tout ? IOSQE_CQE_SKIP_SUCCESS : 0;
sqe->user_data = 1;
ret = io_uring_submit(ring);
if (ret != 2) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
return 1;
}
for (i = 0; i < nr; i++) {
ret = io_uring_wait_cqe(ring, &cqe);
if (ret != 0) {
fprintf(stderr, "wait completion %d\n", ret);
return 1;
}
switch (cqe->user_data) {
case 0:
if (cqe->res != -ECANCELED && cqe->res != -EINTR) {
fprintf(stderr, "unexpected read return: %d\n", cqe->res);
return 1;
}
break;
case 1:
if (skip_tout) {
fprintf(stderr, "extra timeout cqe, %d\n", cqe->res);
return 1;
}
break;
}
io_uring_cqe_seen(ring, cqe);
}
if (io_uring_peek_cqe(ring, &cqe) >= 0) {
fprintf(stderr, "single CQE expected: got data: %i res: %i\n",
(int)cqe->user_data, cqe->res);
return 1;
}
return 0;
}
static int test_hardlink(struct io_uring *ring, int nr, int fail_idx,
int skip_idx, bool hardlink_last)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret, i;
assert(fail_idx < nr);
assert(skip_idx < nr);
for (i = 0; i < nr; i++) {
sqe = io_uring_get_sqe(ring);
if (i == fail_idx)
prep_exec_fail_req(sqe);
else
io_uring_prep_nop(sqe);
if (i != nr - 1 || hardlink_last)
sqe->flags |= IOSQE_IO_HARDLINK;
if (i == skip_idx)
sqe->flags |= IOSQE_CQE_SKIP_SUCCESS;
sqe->user_data = i;
}
ret = io_uring_submit(ring);
if (ret != nr) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
}
for (i = 0; i < nr; i++) {
if (i == skip_idx && fail_idx != skip_idx)
continue;
ret = io_uring_wait_cqe(ring, &cqe);
if (ret != 0) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
if (cqe->user_data != i) {
fprintf(stderr, "invalid user_data %d (%i)\n",
(int)cqe->user_data, i);
goto err;
}
if (i == fail_idx) {
if (cqe->res >= 0) {
fprintf(stderr, "req should've failed %d %d\n",
(int)cqe->user_data, cqe->res);
goto err;
}
} else {
if (cqe->res) {
fprintf(stderr, "req error %d %d\n",
(int)cqe->user_data, cqe->res);
goto err;
}
}
io_uring_cqe_seen(ring, cqe);
}
if (io_uring_peek_cqe(ring, &cqe) >= 0) {
fprintf(stderr, "single CQE expected %i\n", (int)cqe->user_data);
goto err;
}
return 0;
err:
return 1;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
int ret, i, j, k;
int mid_idx = LINK_SIZE / 2;
int last_idx = LINK_SIZE - 1;
if (argc > 1)
return 0;
if (pipe(fds)) {
fprintf(stderr, "pipe() failed\n");
return 1;
}
ret = io_uring_queue_init(16, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed: %d\n", ret);
return 1;
}
if (!(ring.features & IORING_FEAT_CQE_SKIP))
return T_EXIT_SKIP;
for (i = 0; i < 4; i++) {
bool skip_last = i & 1;
int sz = (i & 2) ? LINK_SIZE : 1;
ret = test_link_success(&ring, sz, skip_last);
if (ret) {
fprintf(stderr, "test_link_success sz %d, %d last\n",
skip_last, sz);
return ret;
}
}
ret = test_link_fail(&ring, LINK_SIZE, mid_idx);
if (ret) {
fprintf(stderr, "test_link_fail mid failed\n");
return ret;
}
ret = test_link_fail(&ring, LINK_SIZE, last_idx);
if (ret) {
fprintf(stderr, "test_link_fail last failed\n");
return ret;
}
for (i = 0; i < 2; i++) {
bool async = i & 1;
ret = test_ltimeout_cancel(&ring, 1, 0, async, -1);
if (ret) {
fprintf(stderr, "test_ltimeout_cancel 1 failed, %i\n",
async);
return ret;
}
ret = test_ltimeout_cancel(&ring, LINK_SIZE, mid_idx, async, -1);
if (ret) {
fprintf(stderr, "test_ltimeout_cancel mid failed, %i\n",
async);
return ret;
}
ret = test_ltimeout_cancel(&ring, LINK_SIZE, last_idx, async, -1);
if (ret) {
fprintf(stderr, "test_ltimeout_cancel last failed, %i\n",
async);
return ret;
}
ret = test_ltimeout_cancel(&ring, LINK_SIZE, mid_idx, async, mid_idx);
if (ret) {
fprintf(stderr, "test_ltimeout_cancel fail mid failed, %i\n",
async);
return ret;
}
ret = test_ltimeout_cancel(&ring, LINK_SIZE, mid_idx, async, mid_idx - 1);
if (ret) {
fprintf(stderr, "test_ltimeout_cancel fail2 mid failed, %i\n",
async);
return ret;
}
ret = test_ltimeout_cancel(&ring, LINK_SIZE, mid_idx, async, mid_idx + 1);
if (ret) {
fprintf(stderr, "test_ltimeout_cancel fail3 mid failed, %i\n",
async);
return ret;
}
}
for (i = 0; i < 8; i++) {
bool async = i & 1;
bool skip1 = i & 2;
bool skip2 = i & 4;
ret = test_ltimeout_fire(&ring, async, skip1, skip2);
if (ret) {
fprintf(stderr, "test_ltimeout_fire failed\n");
return ret;
}
}
/* test 3 positions, start/middle/end of the link, i.e. indexes 0, 3, 6 */
for (i = 0; i < 3; i++) {
for (j = 0; j < 3; j++) {
for (k = 0; k < 2; k++) {
bool mark_last = k & 1;
ret = test_hardlink(&ring, 7, i * 3, j * 3, mark_last);
if (ret) {
fprintf(stderr, "test_hardlink failed"
"fail %i skip %i mark last %i\n",
i * 3, j * 3, k);
return 1;
}
}
}
}
close(fds[0]);
close(fds[1]);
io_uring_queue_exit(&ring);
return 0;
}
|
