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
|
/* Test for AIO POSIX compliance.
Copyright (C) 2001-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <aio.h>
#include <error.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
/* We might wait for 3 seconds, so increase timeout to 10 seconds. */
#define TIMEOUT 10
#define TEST_FUNCTION do_test ()
static int
do_test (void)
{
int result = 0;
int piped[2];
/* Make a pipe that we will never write to, so we can block reading it. */
if (pipe (piped) < 0)
{
perror ("pipe");
return 1;
}
/* Test for aio_cancel() detecting invalid file descriptor. */
{
struct aiocb cb;
int fd = -1;
cb.aio_fildes = fd;
cb.aio_offset = 0;
cb.aio_buf = NULL;
cb.aio_nbytes = 0;
cb.aio_reqprio = 0;
cb.aio_sigevent.sigev_notify = SIGEV_NONE;
errno = 0;
/* Case one: invalid fds that match. */
if (aio_cancel (fd, &cb) != -1 || errno != EBADF)
{
if (errno == ENOSYS)
{
puts ("no aio support in this configuration");
return 0;
}
puts ("aio_cancel( -1, {-1..} ) did not return -1 or errno != EBADF");
++result;
}
cb.aio_fildes = -2;
errno = 0;
/* Case two: invalid fds that do not match; just print warning. */
if (aio_cancel (fd, &cb) != -1 || errno != EBADF)
puts ("aio_cancel( -1, {-2..} ) did not return -1 or errno != EBADF");
}
/* Test for aio_fsync() detecting bad fd, and fd not open for writing. */
{
struct aiocb cb;
int fd = -1;
cb.aio_fildes = fd;
cb.aio_offset = 0;
cb.aio_buf = NULL;
cb.aio_nbytes = 0;
cb.aio_reqprio = 0;
cb.aio_sigevent.sigev_notify = SIGEV_NONE;
errno = 0;
/* Case one: invalid fd. */
if (aio_fsync (O_SYNC, &cb) != -1 || errno != EBADF)
{
puts ("aio_fsync( op, {-1..} ) did not return -1 or errno != EBADF");
++result;
}
if ((fd = open ("/dev/null", O_RDONLY)) < 0)
error (1, errno, "opening /dev/null");
cb.aio_fildes = fd;
errno = 0;
/* Case two: valid fd but open for read only. */
if (aio_fsync (O_SYNC, &cb) != -1 || errno != EBADF)
{
puts ("aio_fsync( op, {RO..} ) did not return -1 or errno != EBADF");
++result;
}
close (fd);
}
/* Test for aio_suspend() suspending even if completed elements in list. */
{
#define BYTES 8
const int ELEMS = 2;
int i, r, fd;
static char buff[BYTES];
char name[] = "/tmp/aio7.XXXXXX";
struct timespec timeout;
static struct aiocb cb0, cb1;
struct aiocb *list[ELEMS];
fd = mkstemp (name);
if (fd < 0)
error (1, errno, "creating temp file");
if (unlink (name))
error (1, errno, "unlinking temp file");
if (write (fd, "01234567", BYTES) != BYTES)
error (1, errno, "writing to temp file");
cb0.aio_fildes = fd;
cb0.aio_offset = 0;
cb0.aio_buf = buff;
cb0.aio_nbytes = BYTES;
cb0.aio_reqprio = 0;
cb0.aio_sigevent.sigev_notify = SIGEV_NONE;
r = aio_read (&cb0);
if (r != 0)
error (1, errno, "reading from file");
while (aio_error (&(cb0)) == EINPROGRESS)
usleep (10);
for (i = 0; i < BYTES; i++)
printf ("%c ", buff[i]);
printf ("\n");
/* At this point, the first read is completed, so start another one on
the read half of a pipe on which nothing will be written. */
cb1.aio_fildes = piped[0];
cb1.aio_offset = 0;
cb1.aio_buf = buff;
cb1.aio_nbytes = BYTES;
cb1.aio_reqprio = 0;
cb1.aio_sigevent.sigev_notify = SIGEV_NONE;
r = aio_read (&cb1);
if (r != 0)
error (1, errno, "reading from file");
/* Now call aio_suspend() with the two reads. It should return
* immediately according to the POSIX spec.
*/
list[0] = &cb0;
list[1] = &cb1;
timeout.tv_sec = 3;
timeout.tv_nsec = 0;
r = aio_suspend ((const struct aiocb * const *) list, ELEMS, &timeout);
if (r == -1 && errno == EAGAIN)
{
puts ("aio_suspend([done,blocked],2,3) suspended thread");
++result;
}
/* Note that CB1 is still pending, and so cannot be an auto variable.
Thus we also test that exiting with an outstanding request works. */
}
return result;
}
#include "../test-skeleton.c"
|
