minix/test/ipc/shmt/shmt05.c

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2009-09-21 16:53:53 +02:00
/*
*
* 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
* shmt05
*
* CALLS
* shmctl(2) shmget(2) shmat(2)
*
* ALGORITHM
* Create two shared memory segments and attach them to the same process
* at two different addresses. The addresses DO BUMP into each other.
* The second attach should Fail.
*
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/utsname.h>
#include <errno.h>
#include <time.h>
/** LTP Port **/
#include "test.h"
#include "usctest.h"
char *TCID="shmt05"; /* 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[2];
#define ADDR (void *)0x80000
#define ADDR1 (void *)0x81000
#define ADDR_IA (void *)0x40000000
#define ADDR1_IA (void *)0x40000010
#define SIZE 16*1024
#define srand48 srand
#define lrand48 rand
int rm_shm(int);
int main(void)
{
int shmid, shmid1;
char *cp, *cp1;
srand48((getpid() << 16) + (unsigned)time((time_t *)NULL));
key[0] = (key_t) lrand48();
key[1] = (key_t) lrand48();
/*--------------------------------------------------------*/
if ((shmid = shmget(key[0], SIZE, IPC_CREAT|0666)) < 0) {
perror("shmget");
tst_resm(TFAIL,
"Error: shmget: shmid = %d, errno = %d\n",
shmid, errno) ;
} else {
#ifdef __ia64__
cp = (char *) shmat(shmid, ADDR_IA, 0);
#elif defined(__ARM_ARCH_4T__)
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cp = (char *) shmat(shmid, (void *)NULL, 0);
#else
cp = (char *) shmat(shmid, ADDR, 0);
#endif
if (cp == (char *)-1) {
tst_resm(TFAIL,"shmat");
rm_shm(shmid) ;
}
}
tst_resm(TPASS,"shmget & shmat");
/*--------------------------------------------------------*/
if ((shmid1 = shmget(key[1], SIZE, IPC_CREAT|0666)) < 0) {
perror("shmget2");
tst_resm(TFAIL,
"Error: shmget: shmid1 = %d, errno = %d\n",
shmid1, errno) ;
} else {
#ifdef __ia64__
cp1 = (char *) shmat(shmid1, ADDR1_IA, 0);
#elif defined(__ARM_ARCH_4T__)
cp1 = (char *) shmat(shmid1, (void *)NULL, 0);
#else
cp1 = (char *) shmat(shmid1, ADDR1, 0);
#endif
if (cp1 != (char *)-1) {
perror("shmat");
tst_resm(TFAIL,
"Error: shmat: shmid1 = %d, addr= %#x, errno = %d\n",
shmid1, cp1, errno);
}
}
tst_resm(TPASS,"2nd shmget & shmat");
/*------------------------------------------------------*/
rm_shm(shmid) ;
rm_shm(shmid1) ;
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);
}