test/ipc/shmt/shmt05.c

   1 /*
   2  *
   3  *   Copyright (c) International Business Machines  Corp., 2002
   4  *
   5  *   This program is free software;  you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation; either version 2 of the License, or
   8  *   (at your option) any later version.
   9  *
  10  *   This program is distributed in the hope that it will be useful,
  11  *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  13  *   the GNU General Public License for more details.
  14  *
  15  *   You should have received a copy of the GNU General Public License
  16  *   along with this program;  if not, write to the Free Software
  17  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18  */
  19
  20 /* 12/20/2002   Port to LTP     robbiew@us.ibm.com */
  21 /* 06/30/2001   Port to Linux   nsharoff@us.ibm.com */
  22
  23 /*
  24  * NAME
  25  *               shmt05
  26  *
  27  * CALLS
  28  *               shmctl(2) shmget(2) shmat(2)
  29  *
  30  * ALGORITHM
  31  * Create two shared memory segments and attach them to the same process
  32  * at two different addresses. The addresses DO BUMP into each other.
  33  * The second attach should Fail.
  34  *
  35  */
  36
  37
  38 #include <stdio.h>
  39 #include <sys/types.h>
  40 #include <sys/ipc.h>
  41 #include <sys/shm.h>
  42 #include <sys/utsname.h>
  43 #include <errno.h>
  44 #include <time.h>
  45
  46 /** LTP Port **/
  47 #include "test.h"
  48 #include "usctest.h"
  49
  50
  51 char *TCID="shmt05";            /* Test program identifier.    */
  52 int TST_TOTAL=2;                /* Total number of test cases. */
  53 extern int Tst_count;           /* Test Case counter for tst_* routines */
  54 /**************/
  55
  56 key_t            key[2];
  57
  58 #define          ADDR            (void *)0x80000
  59 #define          ADDR1           (void *)0x81000
  60 #define ADDR_IA    (void *)0x40000000
  61 #define ADDR1_IA    (void *)0x40000010
  62
  63 #define          SIZE            16*1024
  64
  65 #define         srand48 srand
  66 #define         lrand48 rand
  67
  68 int rm_shm(int);
  69
  70 int main(void)
  71 {
  72  int             shmid, shmid1;
  73  char            *cp, *cp1;
  74
  75  srand48((getpid() << 16) + (unsigned)time((time_t *)NULL));
  76
  77  key[0] = (key_t) lrand48();
  78  key[1] = (key_t) lrand48();
  79
  80 /*--------------------------------------------------------*/
  81
  82
  83  if ((shmid = shmget(key[0], SIZE, IPC_CREAT|0666)) < 0) {
  84   perror("shmget");
  85   tst_resm(TFAIL,
  86   "Error: shmget: shmid = %d, errno = %d\n",
  87   shmid, errno) ;
  88  } else {
  89 #ifdef __ia64__
  90   cp = (char *) shmat(shmid, ADDR_IA, 0);
  91 #elif defined(__ARM_ARCH_4T__) || defined(__minix)
  92   cp = (char *) shmat(shmid, (void *)NULL, 0);
  93 #else
  94   cp = (char *) shmat(shmid, ADDR, 0);
  95 #endif
  96   if (cp == (char *)-1) {
  97    tst_resm(TFAIL,"shmat");
  98    rm_shm(shmid) ;
  99   }
 100  }
 101
 102  tst_resm(TPASS,"shmget & shmat");
 103
 104 /*--------------------------------------------------------*/
 105
 106
 107  if ((shmid1 = shmget(key[1], SIZE, IPC_CREAT|0666)) < 0) {
 108   perror("shmget2");
 109   tst_resm(TFAIL,
 110   "Error: shmget: shmid1 = %d, errno = %d\n",
 111   shmid1, errno) ;
 112  } else {
 113 #ifdef __ia64__
 114    cp1 = (char *) shmat(shmid1, ADDR1_IA, 0);
 115 #elif defined(__ARM_ARCH_4T__)
 116    cp1 = (char *) shmat(shmid1, (void *)NULL, 0);
 117 #else
 118    cp1 = (char *) shmat(shmid1, ADDR1, 0);
 119 #endif
 120   if (cp1 != (char *)-1) {
 121    perror("shmat");
 122    tst_resm(TFAIL,
 123      "Error: shmat: shmid1 = %d, addr= %#x, errno = %d\n",
 124      shmid1, cp1, errno);
 125   }
 126  }
 127
 128  tst_resm(TPASS,"2nd shmget & shmat");
 129
 130 /*------------------------------------------------------*/
 131
 132  rm_shm(shmid) ;
 133  rm_shm(shmid1) ;
 134
 135  tst_exit() ;
 136
 137 /*-------------------------------------------------------*/
 138  return(0);
 139 }
 140
 141 int rm_shm(shmid)
 142 int shmid ;
 143 {
 144   if (shmctl(shmid, IPC_RMID, NULL) == -1) {
 145    perror("shmctl");
 146    tst_resm(TFAIL,
 147             "shmctl Failed to remove: shmid = %d, errno = %d\n",
 148             shmid, errno) ;
 149    tst_exit();
 150   }
 151   return(0);
 152 }