1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/* SPDX-License-Identifier: MIT */
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.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)
t_error(1, ret, "submit %i", ret);
ret = io_uring_wait_cqe(ring, &cqe);
if (ret)
t_error(1, ret, "wait fail %i", ret);
if (cqe->res || cqe->user_data != 42)
t_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) {
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)
t_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)
t_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)
t_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)
t_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;
}
|
