1 /* Copyright (C) 2003-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <errno.h>
19 #include <fcntl.h>
20 #include <semaphore.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <unistd.h>
24
25
26 static void
remove_sem(int status,void * arg)27 remove_sem (int status, void *arg)
28 {
29 sem_unlink (arg);
30 }
31
32
33 static int
do_test(void)34 do_test (void)
35 {
36 sem_t *s;
37 int i;
38
39 on_exit (remove_sem, (void *) "/glibc-tst-sem8");
40
41 for (i = 0; i < 3; ++i)
42 {
43 s = sem_open ("/glibc-tst-sem8", O_CREAT, 0600, 1);
44 if (s == SEM_FAILED)
45 {
46 if (errno == ENOSYS)
47 {
48 puts ("sem_open not supported. Oh well.");
49 return 0;
50 }
51
52 /* Maybe the shm filesystem has strict permissions. */
53 if (errno == EACCES)
54 {
55 puts ("sem_open not allowed. Oh well.");
56 return 0;
57 }
58
59 printf ("sem_open: %m\n");
60 return 1;
61 }
62
63 /* Now close the handle. */
64 if (sem_close (s) != 0)
65 {
66 puts ("sem_close failed");
67 return 1;
68 }
69 }
70
71 return 0;
72 }
73
74 #define TEST_FUNCTION do_test ()
75 #include "../test-skeleton.c"
76