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
|
/* Test for shm_open cancellation handling: BZ #18243.
Copyright (C) 2016-2018 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 <pthread.h>
#include <sys/mman.h>
#include <semaphore.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <stdlib.h>
static sem_t sem; /* Use to sync with thread start. */
static const char shm_name[] = "/glibc-shm_open-cancel";
static void
remove_shm (int status, void *arg)
{
shm_unlink (shm_name);
}
static void *
tf (void *arg)
{
pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, 0);
if (sem_wait (&sem) != 0)
{
printf ("error: sem_wait failed: %m");
exit (1);
}
if (pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, 0) != 0)
{
printf ("error: pthread_setcancelstate failed: %m");
exit (1);
}
/* Neither sem_unlink or sem_open should act on thread cancellation. */
shm_unlink (shm_name);
on_exit (remove_shm, NULL);
int fd = shm_open (shm_name, O_CREAT, 0600);
if (fd == -1)
{
int exit_code;
if (errno == ENOSYS || errno == EACCES)
exit_code = 77;
else
exit_code = 1;
exit (exit_code);
}
if (pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, 0) != 0)
{
printf ("error: pthread_setcancelstate failed: %m");
exit (1);
}
if (close (fd) != 0)
{
printf ("error: pthread_setcancelstate failed: %m");
exit (1);
}
return NULL;
}
static int
do_test (void)
{
pthread_t td;
if (sem_init (&sem, 0, 0))
{
printf ("error: sem_init failed: %m\n");
exit (1);
}
if (pthread_create (&td, NULL, tf, NULL) != 0)
{
printf ("error: pthread_create failed: %m\n");
exit (1);
}
if (pthread_cancel (td) != 0)
{
printf ("error: pthread_cancel failed: %m\n");
exit (1);
}
if (sem_post (&sem) != 0)
{
printf ("error: sem_post failed: %m\n");
exit (1);
}
void *r;
if (pthread_join (td, &r) != 0)
{
printf ("error: pthread_join failed: %m\n");
exit (1);
}
if (r == PTHREAD_CANCELED)
{
puts ("error: pthread_join returned PTHREAD_CANCELED");
exit (1);
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include <test-skeleton.c>
|
