1 /* Copyright (C) 2003-2014 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
21 #include <semaphore.h>
28 remove_sem (int status, void *arg)
41 s = sem_open ("/glibc-tst-sem7", O_CREAT, 0600, 1);
46 puts ("sem_open not supported. Oh well.");
50 /* Maybe the shm filesystem has strict permissions. */
53 puts ("sem_open not allowed. Oh well.");
57 printf ("sem_open: %m\n");
61 on_exit (remove_sem, (void *) "/glibc-tst-sem7");
63 /* We have the semaphore object. Now try again. We should get the
65 s2 = sem_open ("/glibc-tst-sem7", O_CREAT, 0600, 1);
68 puts ("2nd sem_open failed");
73 puts ("2nd sem_open didn't return the same address");
77 /* And again, this time without O_CREAT. */
78 s3 = sem_open ("/glibc-tst-sem7", 0);
81 puts ("3rd sem_open failed");
86 puts ("3rd sem_open didn't return the same address");
90 /* Now close the handle. Three times. */
91 if (sem_close (s2) != 0)
93 puts ("1st sem_close failed");
96 if (sem_close (s) != 0)
98 puts ("2nd sem_close failed");
101 if (sem_close (s3) != 0)
103 puts ("3rd sem_close failed");