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/* SPDX-License-Identifier: MIT */
/*
* Description: run various openat(2) tests
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <assert.h>
#include "helpers.h"
#include "liburing.h"
static int submit_wait(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
int ret;
ret = io_uring_submit(ring);
if (ret <= 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
return 1;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
fprintf(stderr, "wait completion %d\n", ret);
return 1;
}
ret = cqe->res;
io_uring_cqe_seen(ring, cqe);
return ret;
}
static inline int try_close(struct io_uring *ring, int fd, int slot)
{
struct io_uring_sqe *sqe;
sqe = io_uring_get_sqe(ring);
io_uring_prep_close(sqe, fd);
__io_uring_set_target_fixed_file(sqe, slot);
return submit_wait(ring);
}
static int test_close_fixed(void)
{
struct io_uring ring;
struct io_uring_sqe *sqe;
int ret, fds[2];
char buf[1];
ret = io_uring_queue_init(8, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed\n");
return -1;
}
if (pipe(fds)) {
perror("pipe");
return -1;
}
ret = try_close(&ring, 0, 0);
if (ret == -EINVAL) {
fprintf(stderr, "close for fixed files is not supported\n");
return 0;
} else if (ret != -ENXIO) {
fprintf(stderr, "no table failed %i\n", ret);
return -1;
}
ret = try_close(&ring, 1, 0);
if (ret != -EINVAL) {
fprintf(stderr, "set fd failed %i\n", ret);
return -1;
}
ret = io_uring_register_files(&ring, fds, 2);
if (ret) {
fprintf(stderr, "file_register: %d\n", ret);
return ret;
}
ret = try_close(&ring, 0, 2);
if (ret != -EINVAL) {
fprintf(stderr, "out of table failed %i\n", ret);
return -1;
}
ret = try_close(&ring, 0, 0);
if (ret != 0) {
fprintf(stderr, "close failed %i\n", ret);
return -1;
}
sqe = io_uring_get_sqe(&ring);
io_uring_prep_read(sqe, 0, buf, sizeof(buf), 0);
sqe->flags |= IOSQE_FIXED_FILE;
ret = submit_wait(&ring);
if (ret != -EBADF) {
fprintf(stderr, "read failed %i\n", ret);
return -1;
}
ret = try_close(&ring, 0, 1);
if (ret != 0) {
fprintf(stderr, "close 2 failed %i\n", ret);
return -1;
}
ret = try_close(&ring, 0, 0);
if (ret != -EBADF) {
fprintf(stderr, "empty slot failed %i\n", ret);
return -1;
}
close(fds[0]);
close(fds[1]);
io_uring_queue_exit(&ring);
return 0;
}
static int test_close(struct io_uring *ring, int fd, int is_ring_fd)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_close(sqe, fd);
ret = io_uring_submit(ring);
if (ret <= 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
}
ret = io_uring_wait_cqe(ring, &cqe);
if (ret < 0) {
if (!(is_ring_fd && ret == -EBADF)) {
fprintf(stderr, "wait completion %d\n", ret);
goto err;
}
return ret;
}
ret = cqe->res;
io_uring_cqe_seen(ring, cqe);
return ret;
err:
return -1;
}
static int test_openat(struct io_uring *ring, const char *path, int dfd)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_openat(sqe, dfd, path, O_RDONLY, 0);
ret = io_uring_submit(ring);
if (ret <= 0) {
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;
}
ret = cqe->res;
io_uring_cqe_seen(ring, cqe);
return ret;
err:
return -1;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
const char *path, *path_rel;
int ret, do_unlink;
ret = io_uring_queue_init(8, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed\n");
return 1;
}
if (argc > 1) {
path = "/tmp/.open.close";
path_rel = argv[1];
do_unlink = 0;
} else {
path = "/tmp/.open.close";
path_rel = ".open.close";
do_unlink = 1;
}
t_create_file(path, 4096);
if (do_unlink)
t_create_file(path_rel, 4096);
ret = test_openat(&ring, path, -1);
if (ret < 0) {
if (ret == -EINVAL) {
fprintf(stdout, "Open not supported, skipping\n");
goto done;
}
fprintf(stderr, "test_openat absolute failed: %d\n", ret);
goto err;
}
ret = test_openat(&ring, path_rel, AT_FDCWD);
if (ret < 0) {
fprintf(stderr, "test_openat relative failed: %d\n", ret);
goto err;
}
ret = test_close(&ring, ret, 0);
if (ret) {
fprintf(stderr, "test_close normal failed\n");
goto err;
}
ret = test_close(&ring, ring.ring_fd, 1);
if (ret != -EBADF) {
fprintf(stderr, "test_close ring_fd failed\n");
goto err;
}
ret = test_close_fixed();
if (ret) {
fprintf(stderr, "test_close_fixed failed\n");
goto err;
}
done:
unlink(path);
if (do_unlink)
unlink(path_rel);
return 0;
err:
unlink(path);
if (do_unlink)
unlink(path_rel);
return 1;
}
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