127 lines
2.9 KiB
C
127 lines
2.9 KiB
C
/*
|
|
*
|
|
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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"
|
|
#include "usctest.h"
|
|
|
|
char *TCID="shmt08"; /* Test program identifier. */
|
|
int TST_TOTAL=2; /* Total number of test cases. */
|
|
extern int Tst_count; /* Test Case counter for tst_* routines */
|
|
/**************/
|
|
|
|
key_t key;
|
|
|
|
int rm_shm(int);
|
|
|
|
int main(void)
|
|
{
|
|
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_resm(TFAIL,"Error: shmget: shmid = %d, errno = %d\n",
|
|
shmid, errno) ;
|
|
tst_exit() ;
|
|
}
|
|
|
|
cp = (char *) shmat(shmid, (void *)0, 0);
|
|
if (cp == (char *)-1) {
|
|
tst_resm(TFAIL,"shmat1 Failed");
|
|
rm_shm(shmid) ;
|
|
tst_exit() ;
|
|
}
|
|
|
|
cp1 = (char *) shmat(shmid, (void *)0, 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() ;
|
|
|
|
/*---------------------------------------------------------*/
|
|
return(0);
|
|
}
|
|
|
|
int rm_shm(shmid)
|
|
int shmid ;
|
|
{
|
|
if (shmctl(shmid, IPC_RMID, NULL) == -1) {
|
|
perror("shmctl");
|
|
tst_resm(TFAIL,
|
|
"shmctl Failed to remove: shmid = %d, errno = %d\n",
|
|
shmid, errno) ;
|
|
tst_exit();
|
|
}
|
|
return(0);
|
|
}
|
|
|