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
|
#include "zdtmtst.h"
const char *test_doc = "static test for AIO\n";
const char *test_author = "Andrew Vagin <avagin@parallels.com>";
/* Description:
* Create two tcp socket, server send asynchronous request on
* read data and client write data after migration
*/
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <aio.h>
#include <sys/wait.h>
#include <netinet/tcp.h>
static int port = 8880;
#define BUF_SIZE 1024
int main(int argc, char **argv)
{
char buf[BUF_SIZE];
int fd, fd_s;
struct aiocb aiocb;
int status;
pid_t pid;
int ret, res;
const struct aiocb *aioary[1];
task_waiter_t child_waiter;
test_init(argc, argv);
task_waiter_init(&child_waiter);
if ((fd_s = tcp_init_server(AF_INET, &port)) < 0) {
pr_err("initializing server failed\n");
return 1;
}
pid = test_fork();
if (pid < 0) {
pr_perror("fork failed");
return 1;
}
if (pid == 0) {
/*
* Child is client of TCP connection.
*/
close(fd_s);
fd = tcp_init_client(AF_INET, "127.0.0.1", port);
if (fd < 0)
return 1;
memset(&aiocb, 0, sizeof(struct aiocb));
aiocb.aio_fildes = fd;
aiocb.aio_buf = buf;
aiocb.aio_nbytes = BUF_SIZE;
ret = aio_read(&aiocb);
if (ret < 0) {
pr_perror("aio_read failed");
return 1;
}
task_waiter_complete_current(&child_waiter);
/* Wait for request completion */
aioary[0] = &aiocb;
ret = aio_error(&aiocb);
#ifdef DEBUG
test_msg(".");
#endif
res = 0;
again:
if (aio_suspend(aioary, 1, NULL) < 0 && errno != EINTR) {
pr_perror("aio_suspend failed");
res = 1;
}
ret = aio_error(&aiocb);
if (!res && ret == EINPROGRESS) {
#ifdef DEBUG
test_msg("restart aio_suspend\n");
#endif
goto again;
}
if (ret != 0) {
pr_err("Error at aio_error(): %s\n", strerror(ret));
res = 1;
}
if (aio_return(&aiocb) != BUF_SIZE) {
pr_perror("Error at aio_return()");
res = 1;
}
close(fd);
return res;
}
/*
* parent is server of TCP connection
*/
fd = tcp_accept_server(fd_s);
close(fd_s);
if (fd < 0) {
pr_err("can't accept client connection\n");
goto error;
}
task_waiter_wait4(&child_waiter, pid);
test_daemon();
test_waitsig();
if (write(fd, buf, BUF_SIZE) < BUF_SIZE) {
pr_perror("can't write");
goto error;
}
close(fd);
if (wait(&status) < 0) {
pr_perror("wait failed");
goto error;
}
if (WIFEXITED(status) && WEXITSTATUS(status) != 0) {
pr_err("child failed with exit code %d\n", WEXITSTATUS(status));
return 1;
}
pass();
return 0;
error:
kill(pid, SIGKILL);
wait(&status);
return -1;
}
|
