| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2002 |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* 12/20/2002 Port to LTP robbiew@us.ibm.com */ |
| /* 06/30/2001 Port to Linux nsharoff@us.ibm.com */ |
| |
| /* |
| * NAME |
| * shmt08 |
| * |
| * CALLS |
| * shmctl(2) shmget(2) shmat(2) shmdt(2) |
| * |
| * ALGORITHM |
| * Create a shared memory segment. Attach it twice at an address |
| * that is provided by the system. Detach the previously attached |
| * segments from the process. |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <sys/types.h> |
| #include <sys/ipc.h> |
| #include <sys/shm.h> |
| #include <errno.h> |
| |
| #define K_1 1024 |
| |
| /** LTP Port **/ |
| #include "test.h" |
| |
| char *TCID = "shmt08"; /* Test program identifier. */ |
| int TST_TOTAL = 2; /* Total number of test cases. */ |
| /**************/ |
| |
| key_t key; |
| |
| int rm_shm(int); |
| |
| int main() |
| { |
| char *cp = NULL, *cp1 = NULL; |
| int shmid; |
| |
| key = (key_t) getpid(); |
| errno = 0; |
| /*-------------------------------------------------------*/ |
| |
| if ((shmid = shmget(key, 24 * K_1, IPC_CREAT | 0666)) < 0) { |
| perror("shmget"); |
| tst_brkm(TFAIL, NULL, |
| "Error: shmget: shmid = %d, errno = %d\n", |
| shmid, errno); |
| } |
| |
| cp = shmat(shmid, NULL, 0); |
| if (cp == (char *)-1) { |
| tst_resm(TFAIL, "shmat1 Failed"); |
| rm_shm(shmid); |
| tst_exit(); |
| } |
| |
| cp1 = shmat(shmid, NULL, 0); |
| if (cp1 == (char *)-1) { |
| perror("shmat2"); |
| rm_shm(shmid); |
| tst_exit(); |
| } |
| |
| tst_resm(TPASS, "shmget,shmat"); |
| |
| /*--------------------------------------------------------*/ |
| |
| if (shmdt(cp) < 0) { |
| perror("shmdt2"); |
| tst_resm(TFAIL, "shmdt:cp"); |
| } |
| |
| if (shmdt(cp1) < 0) { |
| perror("shmdt1"); |
| tst_resm(TFAIL, "shmdt:cp1"); |
| } |
| |
| tst_resm(TPASS, "shmdt"); |
| |
| /*---------------------------------------------------------*/ |
| rm_shm(shmid); |
| tst_exit(); |
| } |
| |
| int rm_shm(shmid) |
| int shmid; |
| { |
| if (shmctl(shmid, IPC_RMID, NULL) == -1) { |
| perror("shmctl"); |
| tst_brkm(TFAIL, |
| NULL, |
| "shmctl Failed to remove: shmid = %d, errno = %d\n", |
| shmid, errno); |
| } |
| return (0); |
| } |