minix/test/ipc/shmt/shmt05.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
 *		 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__) || defined(__minix)
  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);
}