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#include "../config-host.h"
/* SPDX-License-Identifier: MIT */
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <error.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "liburing.h"
#include "test.h"
#include "helpers.h"
static pid_t pid;
static pid_t fork_t(void)
{
pid = fork();
if (pid == -1) {
fprintf(stderr, "fork failed\n");
exit(T_EXIT_FAIL);
}
return pid;
}
static void wait_child_t(void)
{
int wstatus;
if (waitpid(pid, &wstatus, 0) == (pid_t)-1) {
perror("waitpid()");
exit(T_EXIT_FAIL);
}
if (!WIFEXITED(wstatus)) {
fprintf(stderr, "child failed %i\n", WEXITSTATUS(wstatus));
exit(T_EXIT_FAIL);
}
if (WEXITSTATUS(wstatus))
exit(T_EXIT_FAIL);
}
static int try_submit(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
int ret;
sqe = io_uring_get_sqe(ring);
io_uring_prep_nop(sqe);
sqe->user_data = 42;
ret = io_uring_submit(ring);
if (ret < 0)
return ret;
if (ret != 1)
error(1, ret, "submit %i", ret);
ret = io_uring_wait_cqe(ring, &cqe);
if (ret)
error(1, ret, "wait fail %i", ret);
if (cqe->res || cqe->user_data != 42)
error(1, ret, "invalid cqe");
io_uring_cqe_seen(ring, cqe);
return 0;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
int ret;
if (argc > 1)
return T_EXIT_SKIP;
ret = io_uring_queue_init(8, &ring, IORING_SETUP_SINGLE_ISSUER);
if (ret == -EINVAL) {
fprintf(stderr, "SETUP_SINGLE_ISSUER is not supported, skip\n");
return T_EXIT_SKIP;
} else if (ret) {
fprintf(stderr, "io_uring_queue_init() failed %i\n", ret);
return T_EXIT_FAIL;
}
/* test that the creator iw allowed to submit */
ret = try_submit(&ring);
if (ret) {
fprintf(stderr, "the creator can't submit %i\n", ret);
return T_EXIT_FAIL;
}
/* test that a second submitter doesn't succeed */
if (!fork_t()) {
ret = try_submit(&ring);
if (ret != -EEXIST)
fprintf(stderr, "1: not owner child could submit %i\n", ret);
return ret != -EEXIST;
}
wait_child_t();
io_uring_queue_exit(&ring);
/* test that the first submitter but not creator can submit */
ret = io_uring_queue_init(8, &ring, IORING_SETUP_SINGLE_ISSUER |
IORING_SETUP_R_DISABLED);
if (ret)
error(1, ret, "ring init (2) %i", ret);
if (!fork_t()) {
io_uring_enable_rings(&ring);
ret = try_submit(&ring);
if (ret)
fprintf(stderr, "2: not owner child could submit %i\n", ret);
return !!ret;
}
wait_child_t();
io_uring_queue_exit(&ring);
/* test that only the first enabler can submit */
ret = io_uring_queue_init(8, &ring, IORING_SETUP_SINGLE_ISSUER |
IORING_SETUP_R_DISABLED);
if (ret)
error(1, ret, "ring init (3) %i", ret);
io_uring_enable_rings(&ring);
if (!fork_t()) {
ret = try_submit(&ring);
if (ret != -EEXIST)
fprintf(stderr, "3: not owner child could submit %i\n", ret);
return ret != -EEXIST;
}
wait_child_t();
io_uring_queue_exit(&ring);
/* test that anyone can submit to a SQPOLL|SINGLE_ISSUER ring */
ret = io_uring_queue_init(8, &ring, IORING_SETUP_SINGLE_ISSUER|IORING_SETUP_SQPOLL);
if (ret)
error(1, ret, "ring init (4) %i", ret);
ret = try_submit(&ring);
if (ret) {
fprintf(stderr, "SQPOLL submit failed (creator) %i\n", ret);
return T_EXIT_FAIL;
}
if (!fork_t()) {
ret = try_submit(&ring);
if (ret)
fprintf(stderr, "SQPOLL submit failed (child) %i\n", ret);
return !!ret;
}
wait_child_t();
io_uring_queue_exit(&ring);
/* test that IORING_ENTER_REGISTERED_RING doesn't break anything */
ret = io_uring_queue_init(8, &ring, IORING_SETUP_SINGLE_ISSUER);
if (ret)
error(1, ret, "ring init (5) %i", ret);
if (!fork_t()) {
ret = try_submit(&ring);
if (ret != -EEXIST)
fprintf(stderr, "4: not owner child could submit %i\n", ret);
return ret != -EEXIST;
}
wait_child_t();
io_uring_queue_exit(&ring);
return T_EXIT_PASS;
}
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