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
|
/*
* Copyright (C) 2006-2018 Free Software Foundation, Inc.
* Copyright (C) 2018 Christoph Hellwig.
* License: LGPLv2.1 or later.
*
* Description: test aio poll and io_pgetevents signal handling.
*
* Very roughly based on glibc tst-pselect.c.
*/
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/poll.h>
#include <sys/wait.h>
#include <stdlib.h>
static volatile int handler_called;
static void
handler(int sig)
{
handler_called = 1;
}
int test_main(void)
{
struct timespec to = { .tv_sec = 0, .tv_nsec = 500000000 };
pid_t parent = getpid(), p;
int pipe1[2], pipe2[2];
struct sigaction sa = { .sa_flags = 0 };
sigset_t sigmask;
struct io_context *ctx = NULL;
struct io_event ev;
struct iocb iocb;
struct iocb *iocbs[] = { &iocb };
int ret;
sigemptyset(&sa.sa_mask);
sa.sa_handler = handler;
if (sigaction(SIGUSR1, &sa, NULL) != 0) {
printf("sigaction(1) failed\n");
return 1;
}
sa.sa_handler = SIG_IGN;
if (sigaction(SIGCHLD, &sa, NULL) != 0) {
printf("sigaction(2) failed\n");
return 1;
}
sigemptyset(&sigmask);
sigaddset(&sigmask, SIGUSR1);
if (sigprocmask(SIG_BLOCK, &sigmask, NULL) != 0) {
printf("sigprocmask failed\n");
return 1;
}
if (pipe(pipe1) != 0 || pipe(pipe2) != 0) {
printf("pipe failed\n");
return 1;
}
sigprocmask(SIG_SETMASK, NULL, &sigmask);
sigdelset(&sigmask, SIGUSR1);
p = fork();
switch (p) {
case -1:
printf("fork failed\n");
exit(2);
case 0:
close(pipe1[1]);
close(pipe2[0]);
ret = io_setup(1, &ctx);
if (ret) {
printf("child: io_setup failed: %s\n", strerror(-ret));
return 1;
}
io_prep_poll(&iocb, pipe1[0], POLLIN);
ret = io_submit(ctx, 1, iocbs);
if (ret != 1) {
/* if poll isn't supported, skip the test */
if (ret == -EINVAL)
return 3;
printf("child: io_submit failed: %s\n", strerror(-ret));
return 1;
}
do {
if (getppid() != parent) {
printf("parent died\n");
exit(2);
}
ret = io_pgetevents(ctx, 1, 1, &ev, &to, &sigmask);
} while (ret == 0);
if (ret != -EINTR) {
printf("child: io_pgetevents did not set errno to "
"EINTR: %s\n", strerror(-ret));
return 1;
}
do {
errno = 0;
ret = write(pipe2[1], "foo", 3);
} while (ret == -1 && errno == EINTR);
exit(0);
default:
close(pipe1[0]);
close(pipe2[1]);
io_prep_poll(&iocb, pipe2[0], POLLIN);
ret = io_setup(1, &ctx);
if (ret) {
printf("parent: io_setup failed: %s\n", strerror(-ret));
return 1;
}
ret = io_submit(ctx, 1, iocbs);
if (ret != 1) {
/* if poll isn't supported, skip the test */
if (ret == -EINVAL)
return 3;
printf("parent: io_submit failed with %d: %s\n",
ret, strerror(-ret));
return 1;
}
kill(p, SIGUSR1);
ret = io_pgetevents(ctx, 1, 1, &ev, NULL, &sigmask);
if (ret < 0) {
printf("parent: io_pgetevents failed: %s\n",
strerror(-ret));
return 1;
}
if (ret != 1) {
printf("parent: io_pgetevents did not report event\n");
return 1;
}
if (ev.obj != &iocb) {
printf("parent: io_pgetevents reports wrong fd\n");
return 1;
}
if ((ev.res & POLLIN) != POLLIN) {
printf("parent: io_pgetevents did not report readable fd\n");
return 1;
}
return 0;
}
}
/*
* Local variables:
* mode: c
* c-basic-offset: 8
* End:
*/
|
