You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
120 lines
2.7 KiB
120 lines
2.7 KiB
/* |
|
* |
|
* 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 |
|
* shmt02 |
|
* |
|
* CALLS |
|
* shmctl(2) shmget(2) |
|
* |
|
* ALGORITHM |
|
* Create and attach a shared memory segment, write to it |
|
* and then remove it. Verify that the shared memory segment |
|
* is accessible as long as the process is still alive. |
|
* |
|
*/ |
|
|
|
#include <stdio.h> |
|
#include <sys/types.h> |
|
#include <sys/ipc.h> |
|
#include <sys/shm.h> |
|
#include <sys/utsname.h> |
|
#include <errno.h> |
|
|
|
/** LTP Port **/ |
|
#include "test.h" |
|
|
|
char *TCID = "shmt02"; /* Test program identifier. */ |
|
int TST_TOTAL = 3; /* Total number of test cases. */ |
|
|
|
/**************/ |
|
|
|
#define K_1 1024 |
|
|
|
static int rm_shm(int); |
|
|
|
int main(void) |
|
{ |
|
register int shmid; |
|
char *cp; |
|
key_t key; |
|
|
|
errno = 0; |
|
key = (key_t) getpid(); |
|
|
|
/*----------------------------------------------------------------*/ |
|
|
|
if ((shmid = shmget(key, 16 * K_1, IPC_CREAT | 0666)) < 0) { |
|
perror("shmget"); |
|
tst_brkm(TFAIL, NULL, |
|
"shmget Failed: shmid = %d, errno = %d\n", |
|
shmid, errno); |
|
} |
|
|
|
tst_resm(TPASS, "shmget"); |
|
|
|
/*----------------------------------------------------------------*/ |
|
|
|
cp = shmat(shmid, NULL, 0); |
|
|
|
if (cp == (char *)-1) { |
|
perror("shmat"); |
|
tst_resm(TFAIL, "shmat Failed: shmid = %d, errno = %d\n", |
|
shmid, errno); |
|
rm_shm(shmid); |
|
tst_exit(); |
|
} |
|
|
|
*cp = '1'; |
|
*(cp + 1) = '2'; |
|
|
|
tst_resm(TPASS, "shmat"); |
|
|
|
/*----------------------------------------------------------------*/ |
|
|
|
rm_shm(shmid); |
|
|
|
if (*cp != '1' || *(cp + 1) != '2') { |
|
tst_resm(TFAIL, |
|
"Error in shared memory contents: shmid = %d\n", |
|
shmid); |
|
} |
|
|
|
tst_resm(TPASS, "Correct shared memory contents"); |
|
|
|
/*------------------------------------------------------------------*/ |
|
|
|
tst_exit(); |
|
} |
|
|
|
static int rm_shm(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); |
|
}
|
|
|