128 lines
2.9 KiB
C
128 lines
2.9 KiB
C
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/*
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*
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* Copyright (c) International Business Machines Corp., 2002
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* 12/20/2002 Port to LTP robbiew@us.ibm.com */
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/* 06/30/2001 Port to Linux nsharoff@us.ibm.com */
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/*
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* NAME
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* shmt08
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*
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* CALLS
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* shmctl(2) shmget(2) shmat(2) shmdt(2)
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*
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* ALGORITHM
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* Create a shared memory segment. Attach it twice at an address
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* that is provided by the system. Detach the previously attached
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* segments from the process.
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*
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*/
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <errno.h>
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#define K_1 1024
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/** LTP Port **/
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#include "test.h"
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#include "usctest.h"
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char *TCID="shmt08"; /* Test program identifier. */
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int TST_TOTAL=2; /* Total number of test cases. */
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extern int Tst_count; /* Test Case counter for tst_* routines */
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/**************/
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key_t key;
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int rm_shm(int);
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int main(void)
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{
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char *cp=NULL, *cp1=NULL;
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int shmid;
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key = (key_t) getpid() ;
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errno = 0 ;
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/*-------------------------------------------------------*/
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if ((shmid = shmget(key, 24*K_1, IPC_CREAT|0666)) < 0) {
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perror("shmget");
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tst_resm(TFAIL,"Error: shmget: shmid = %d, errno = %d\n",
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shmid, errno) ;
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tst_exit() ;
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}
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cp = (char *) shmat(shmid, (void *)0, 0);
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if (cp == (char *)-1) {
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tst_resm(TFAIL,"shmat1 Failed");
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rm_shm(shmid) ;
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tst_exit() ;
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}
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cp1 = (char *) shmat(shmid, (void *)0, 0);
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if (cp1 == (char *)-1) {
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perror("shmat2");
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rm_shm(shmid) ;
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tst_exit() ;
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}
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tst_resm(TPASS,"shmget,shmat");
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/*--------------------------------------------------------*/
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if (shmdt(cp) < 0) {
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perror("shmdt2");
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tst_resm(TFAIL,"shmdt:cp") ;
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}
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if (shmdt(cp1) < 0 ) {
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perror("shmdt1");
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tst_resm(TFAIL,"shmdt:cp1") ;
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}
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tst_resm(TPASS,"shmdt");
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/*---------------------------------------------------------*/
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rm_shm(shmid) ;
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tst_exit() ;
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/*---------------------------------------------------------*/
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return(0);
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}
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int rm_shm(shmid)
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int shmid ;
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{
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if (shmctl(shmid, IPC_RMID, NULL) == -1) {
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perror("shmctl");
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tst_resm(TFAIL,
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"shmctl Failed to remove: shmid = %d, errno = %d\n",
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shmid, errno) ;
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tst_exit();
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}
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return(0);
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}
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