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d614a753 | 1 | /* Copyright (C) 2003-2020 Free Software Foundation, Inc. |
fddfebbd UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. | |
4 | ||
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. | |
9 | ||
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. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
fddfebbd UD |
18 | |
19 | #include <errno.h> | |
20 | #include <fcntl.h> | |
21 | #include <semaphore.h> | |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <unistd.h> | |
25 | ||
26 | ||
27 | static void | |
28 | remove_sem (int status, void *arg) | |
29 | { | |
30 | sem_unlink (arg); | |
31 | } | |
32 | ||
33 | ||
29955b5d AS |
34 | static int |
35 | do_test (void) | |
fddfebbd UD |
36 | { |
37 | sem_t *s; | |
38 | sem_t *s2; | |
39 | sem_t *s3; | |
40 | ||
41 | s = sem_open ("/glibc-tst-sem7", O_CREAT, 0600, 1); | |
42 | if (s == SEM_FAILED) | |
43 | { | |
44 | if (errno == ENOSYS) | |
45 | { | |
46 | puts ("sem_open not supported. Oh well."); | |
47 | return 0; | |
48 | } | |
49 | ||
50 | /* Maybe the shm filesystem has strict permissions. */ | |
51 | if (errno == EACCES) | |
52 | { | |
53 | puts ("sem_open not allowed. Oh well."); | |
54 | return 0; | |
55 | } | |
56 | ||
57 | printf ("sem_open: %m\n"); | |
58 | return 1; | |
59 | } | |
60 | ||
61 | on_exit (remove_sem, (void *) "/glibc-tst-sem7"); | |
62 | ||
63 | /* We have the semaphore object. Now try again. We should get the | |
64 | same address. */ | |
65 | s2 = sem_open ("/glibc-tst-sem7", O_CREAT, 0600, 1); | |
66 | if (s2 == SEM_FAILED) | |
67 | { | |
68 | puts ("2nd sem_open failed"); | |
69 | return 1; | |
70 | } | |
71 | if (s != s2) | |
72 | { | |
73 | puts ("2nd sem_open didn't return the same address"); | |
74 | return 1; | |
75 | } | |
76 | ||
77 | /* And again, this time without O_CREAT. */ | |
78 | s3 = sem_open ("/glibc-tst-sem7", 0); | |
79 | if (s3 == SEM_FAILED) | |
80 | { | |
81 | puts ("3rd sem_open failed"); | |
82 | return 1; | |
83 | } | |
84 | if (s != s3) | |
85 | { | |
86 | puts ("3rd sem_open didn't return the same address"); | |
87 | return 1; | |
88 | } | |
89 | ||
90 | /* Now close the handle. Three times. */ | |
91 | if (sem_close (s2) != 0) | |
92 | { | |
93 | puts ("1st sem_close failed"); | |
94 | return 1; | |
95 | } | |
96 | if (sem_close (s) != 0) | |
97 | { | |
98 | puts ("2nd sem_close failed"); | |
99 | return 1; | |
100 | } | |
101 | if (sem_close (s3) != 0) | |
102 | { | |
103 | puts ("3rd sem_close failed"); | |
104 | return 1; | |
105 | } | |
106 | ||
107 | return 0; | |
108 | } | |
29955b5d AS |
109 | |
110 | #define TEST_FUNCTION do_test () | |
111 | #include "../test-skeleton.c" |