| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Test for SEM_VALUE_MAX overflow detection: BZ #18434. |
| 2 | Copyright (C) 2015-2016 Free Software Foundation, Inc. |
| 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 |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 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" |