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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
#include "../config-host.h"
/* SPDX-License-Identifier: MIT */
/*
* Description: check that STDOUT write works
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include "helpers.h"
#include "liburing.h"
static int test_pipe_io_fixed(struct io_uring *ring)
{
const char str[] = "This is a fixed pipe test\n";
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
struct iovec vecs[2];
char buffer[128];
int i, ret, fds[2];
t_posix_memalign(&vecs[0].iov_base, 4096, 4096);
memcpy(vecs[0].iov_base, str, strlen(str));
vecs[0].iov_len = strlen(str);
if (pipe(fds) < 0) {
perror("pipe");
return 1;
}
ret = io_uring_register_buffers(ring, vecs, 1);
if (ret) {
fprintf(stderr, "Failed to register buffers: %d\n", ret);
return 1;
}
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_write_fixed(sqe, fds[1], vecs[0].iov_base,
vecs[0].iov_len, 0, 0);
sqe->user_data = 1;
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
vecs[1].iov_base = buffer;
vecs[1].iov_len = sizeof(buffer);
io_uring_prep_readv(sqe, fds[0], &vecs[1], 1, 0);
sqe->user_data = 2;
ret = io_uring_submit(ring);
if (ret < 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
} else if (ret != 2) {
fprintf(stderr, "Submitted only %d\n", ret);
goto err;
}
for (i = 0; i < 2; i++) {
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, "I/O write error on %lu: %s\n",
(unsigned long) cqe->user_data,
strerror(-cqe->res));
goto err;
}
if (cqe->res != strlen(str)) {
fprintf(stderr, "Got %d bytes, wanted %d on %lu\n",
cqe->res, (int)strlen(str),
(unsigned long) cqe->user_data);
goto err;
}
if (cqe->user_data == 2 && memcmp(str, buffer, strlen(str))) {
fprintf(stderr, "read data mismatch\n");
goto err;
}
io_uring_cqe_seen(ring, cqe);
}
io_uring_unregister_buffers(ring);
return 0;
err:
return 1;
}
static int test_stdout_io_fixed(struct io_uring *ring)
{
const char str[] = "This is a fixed pipe test\n";
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
struct iovec vecs;
int ret;
t_posix_memalign(&vecs.iov_base, 4096, 4096);
memcpy(vecs.iov_base, str, strlen(str));
vecs.iov_len = strlen(str);
ret = io_uring_register_buffers(ring, &vecs, 1);
if (ret) {
fprintf(stderr, "Failed to register buffers: %d\n", ret);
return 1;
}
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_write_fixed(sqe, STDOUT_FILENO, vecs.iov_base, vecs.iov_len, 0, 0);
ret = io_uring_submit(ring);
if (ret < 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
} else if (ret < 1) {
fprintf(stderr, "Submitted only %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 < 0) {
fprintf(stderr, "STDOUT write error: %s\n", strerror(-cqe->res));
goto err;
}
if (cqe->res != vecs.iov_len) {
fprintf(stderr, "Got %d write, wanted %d\n", cqe->res, (int)vecs.iov_len);
goto err;
}
io_uring_cqe_seen(ring, cqe);
io_uring_unregister_buffers(ring);
return 0;
err:
return 1;
}
static int test_stdout_io(struct io_uring *ring)
{
struct io_uring_cqe *cqe;
struct io_uring_sqe *sqe;
struct iovec vecs;
int ret;
vecs.iov_base = "This is a pipe test\n";
vecs.iov_len = strlen(vecs.iov_base);
sqe = io_uring_get_sqe(ring);
if (!sqe) {
fprintf(stderr, "get sqe failed\n");
goto err;
}
io_uring_prep_writev(sqe, STDOUT_FILENO, &vecs, 1, 0);
ret = io_uring_submit(ring);
if (ret < 0) {
fprintf(stderr, "sqe submit failed: %d\n", ret);
goto err;
} else if (ret < 1) {
fprintf(stderr, "Submitted only %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 < 0) {
fprintf(stderr, "STDOUT write error: %s\n",
strerror(-cqe->res));
goto err;
}
if (cqe->res != vecs.iov_len) {
fprintf(stderr, "Got %d write, wanted %d\n", cqe->res,
(int)vecs.iov_len);
goto err;
}
io_uring_cqe_seen(ring, cqe);
return 0;
err:
return 1;
}
int main(int argc, char *argv[])
{
struct io_uring ring;
int ret;
if (argc > 1)
return 0;
ret = io_uring_queue_init(8, &ring, 0);
if (ret) {
fprintf(stderr, "ring setup failed\n");
return 1;
}
ret = test_stdout_io(&ring);
if (ret) {
fprintf(stderr, "test_pipe_io failed\n");
return ret;
}
ret = test_stdout_io_fixed(&ring);
if (ret) {
fprintf(stderr, "test_pipe_io_fixed failed\n");
return ret;
}
ret = test_pipe_io_fixed(&ring);
if (ret) {
fprintf(stderr, "test_pipe_io_fixed failed\n");
return ret;
}
return 0;
}
|
