232 lines
5 KiB
C
232 lines
5 KiB
C
/*
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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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/* 03/21/2003 enable ia64 Jacky.Malcles */
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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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* shmt04
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*
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* CALLS
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* shmctl(2) shmget(2) shmat(2)
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*
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* ALGORITHM
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* Parent process forks a child. Child pauses until parent has created
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* a shared memory segment, attached to it and written to it too. At that
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* time child gets the shared memory segment id, attaches to it and
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* verifies that its contents are the same as the contents of the
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* parent attached segment.
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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 <sys/wait.h>
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#include <sys/utsname.h>
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#include <signal.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <unistd.h>
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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="shmt04"; /* 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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sigset_t mysigset;
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#define ADDR1 (void *)0x40000000
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#define ADDR (void *)0x80000
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#define SIZE 16*1024
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int child(void);
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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;
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int pid, pid1, shmid;
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int status;
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key = (key_t) getpid() ;
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signal(SIGUSR1, SIG_DFL);
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sigemptyset(&mysigset);
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sigaddset(&mysigset,SIGUSR1);
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sigprocmask(SIG_BLOCK,&mysigset,NULL);
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pid = fork();
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switch (pid) {
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case -1:
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tst_resm(TBROK,"fork failed");
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tst_exit() ;
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case 0:
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child();
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}
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/*----------------------------------------------------------*/
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if ((shmid = shmget(key, SIZE, 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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/*
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* kill the child if parent failed to do the attach
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*/
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(void)kill(pid, SIGINT);
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}
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else {
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#ifdef __ia64__
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cp = (char *) shmat(shmid, ADDR1, 0);
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#elif defined(__ARM_ARCH_4T__)
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cp = (char *) shmat(shmid, NULL, 0);
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#else
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cp = (char *) shmat(shmid, ADDR, 0);
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#endif
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if (cp == (char *)-1) {
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perror("shmat");
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tst_resm(TFAIL,
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"Error: shmat: shmid = %d, errno = %d\n",
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shmid, errno) ;
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/* kill the child if parent failed to do the attch */
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kill(pid, SIGINT) ;
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/* remove shared memory segment */
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rm_shm(shmid) ;
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tst_exit() ;
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}
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*cp = 'A';
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*(cp+1) = 'B';
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*(cp+2) = 'C';
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kill(pid, SIGUSR1);
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while ( (pid1 = wait(&status)) < 0 &&
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(errno == EINTR) ) ;
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if (pid1 != pid) {
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tst_resm(TFAIL,"Waited on the wrong child") ;
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tst_resm(TFAIL,
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"Error: wait_status = %d, pid1= %d\n", status, pid1) ;
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}
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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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tst_resm(TFAIL,"shmdt");
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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 child(void)
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{
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int shmid,
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chld_pid ;
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char *cp;
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sigemptyset(&mysigset);
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sigsuspend(&mysigset);
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chld_pid = getpid() ;
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/*--------------------------------------------------------*/
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if ((shmid = shmget(key, SIZE, 0)) < 0) {
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perror("shmget:child process");
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tst_resm(TFAIL,
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"Error: shmget: errno=%d, shmid=%d, child_pid=%d\n",
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errno, shmid, chld_pid);
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}
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else
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{
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#ifdef __ia64__
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cp = (char *) shmat(shmid, ADDR1, 0);
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#elif defined(__ARM_ARCH_4T__)
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cp = (char *) shmat(shmid, NULL, 0);
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#else
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cp = (char *) shmat(shmid, ADDR, 0);
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#endif
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if (cp == (char *)-1) {
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perror("shmat:child process");
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tst_resm(TFAIL,
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"Error: shmat: errno=%d, shmid=%d, child_pid=%d\n",
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errno, shmid, chld_pid);
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} else {
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if (*cp != 'A') {
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tst_resm(TFAIL,"child: not A\n");
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}
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if (*(cp+1) != 'B') {
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tst_resm(TFAIL,"child: not B\n");
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}
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if (*(cp+2) != 'C') {
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tst_resm(TFAIL,"child: not C\n");
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}
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if (*(cp+8192) != 0) {
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tst_resm(TFAIL,"child: not 0\n");
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}
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}
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}
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tst_exit() ;
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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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