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88ed594f | 1 | /* Test for SEM_VALUE_MAX overflow detection: BZ #18434. |
581c785b | 2 | Copyright (C) 2015-2022 Free Software Foundation, Inc. |
88ed594f RM |
3 | This file is part of the GNU C Library. |
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 | |
16 | License along with the GNU C Library; if not, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
88ed594f RM |
18 | |
19 | #include <errno.h> | |
20 | #include <limits.h> | |
21 | #include <semaphore.h> | |
22 | #include <stdio.h> | |
23 | #include <string.h> | |
24 | #include <unistd.h> | |
25 | ||
26 | ||
27 | static int | |
28 | do_test (void) | |
29 | { | |
30 | sem_t s; | |
31 | ||
32 | if (sem_init (&s, 0, SEM_VALUE_MAX)) | |
33 | { | |
34 | printf ("sem_init: %m\n"); | |
35 | return 1; | |
36 | } | |
37 | ||
38 | int result = 0; | |
39 | ||
40 | int value = 0xdeadbeef; | |
41 | if (sem_getvalue (&s, &value)) | |
42 | { | |
43 | printf ("sem_getvalue: %m\n"); | |
44 | result = 1; | |
45 | } | |
46 | else | |
47 | { | |
48 | printf ("sem_getvalue after init: %d\n", value); | |
49 | if (value != SEM_VALUE_MAX) | |
50 | { | |
51 | printf ("\tshould be %d\n", SEM_VALUE_MAX); | |
52 | result = 1; | |
53 | } | |
54 | } | |
55 | ||
56 | errno = 0; | |
57 | if (sem_post(&s) == 0) | |
58 | { | |
59 | puts ("sem_post at SEM_VALUE_MAX succeeded!"); | |
60 | result = 1; | |
61 | } | |
62 | else | |
63 | { | |
64 | printf ("sem_post at SEM_VALUE_MAX: %m (%d)\n", errno); | |
65 | if (errno != EOVERFLOW) | |
66 | { | |
67 | printf ("\tshould be %s (EOVERFLOW = %d)\n", | |
68 | strerror (EOVERFLOW), EOVERFLOW); | |
69 | result = 1; | |
70 | } | |
71 | } | |
72 | ||
73 | value = 0xbad1d00d; | |
74 | if (sem_getvalue (&s, &value)) | |
75 | { | |
76 | printf ("sem_getvalue: %m\n"); | |
77 | result = 1; | |
78 | } | |
79 | else | |
80 | { | |
81 | printf ("sem_getvalue after post: %d\n", value); | |
82 | if (value != SEM_VALUE_MAX) | |
83 | { | |
84 | printf ("\tshould be %d\n", SEM_VALUE_MAX); | |
85 | result = 1; | |
86 | } | |
87 | } | |
88 | ||
89 | if (sem_destroy (&s)) | |
90 | { | |
91 | printf ("sem_destroy: %m\n"); | |
92 | result = 1; | |
93 | } | |
94 | ||
95 | return result; | |
96 | } | |
97 | ||
98 | #define TEST_FUNCTION do_test () | |
99 | #include "../test-skeleton.c" |