| /* |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * Test that the reuse of the name subsequently causes shm_open() to |
| * create a new shared memory object if O_CREAT is set even if the object |
| * continues to exist after the last shm_unlink(), |
| */ |
| |
| #include <stdio.h> |
| #include <sys/mman.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <errno.h> |
| #include "posixtest.h" |
| |
| #define SHM_NAME "posixtest_5-1" |
| |
| int main() |
| { |
| int fd; |
| |
| fd = shm_open(SHM_NAME, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR); |
| if (fd == -1) { |
| perror("An error occurs when calling shm_open()"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (shm_unlink(SHM_NAME) != 0) { |
| perror("An error occurs when calling shm_unlink()"); |
| return PTS_UNRESOLVED; |
| } |
| |
| fd = shm_open(SHM_NAME, O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR); |
| if (fd == -1 && errno == EEXIST) { |
| printf("shm_open() can not create a new object.\n"); |
| return PTS_FAIL; |
| } else if (fd == -1) { |
| perror("shm_open"); |
| return PTS_UNRESOLVED; |
| } |
| |
| printf("Test PASSED\n"); |
| shm_unlink(SHM_NAME); |
| return PTS_PASS; |
| |
| } |