200 lines
5.0 KiB
C
200 lines
5.0 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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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* shmt09
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*
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* CALLS
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* sbrk(2) shmctl(2) shmget(2)
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*
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* ALGORITHM
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* Create a shared memory segment and attach at the default address.
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* Increase the size of the data segment.
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* Attach at an address that is less than the break value: should FAIL.
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* decrease the size of the data segment.
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* Attach at 4K past the break value: should SUCCEED.
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* Sbrk() past the attached segment: should FAIL.
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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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#include <unistd.h>
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#define K_1 1024
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#define SHMBYTES (SHMLBA - 1)
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#define SHMALIGN(p) (((unsigned long)(p) + SHMBYTES) & ~SHMBYTES)
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/** LTP Port **/
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#include "test.h"
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char *TCID = "shmt09"; /* Test program identifier. */
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int TST_TOTAL = 4; /* Total number of test cases. */
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/**************/
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#ifdef __ia64__
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#define INCREMENT 8388608 /* 8Mb */
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#elif defined (__mips__) || defined (__hppa__) || defined (__sparc__)
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#define INCREMENT 262144 /* 256Kb */
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#elif defined __sh__ || defined (__arm__) || defined(__aarch64__)
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#define INCREMENT 16384 /* 16kb */
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#else
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#define INCREMENT SHMLBA
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#endif
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static int rm_shm(int);
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int main(void)
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{
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char *c1 = NULL, *c2 = NULL, *c3 = NULL;
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void *vp;
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int shmid;
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key_t key;
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key = (key_t) getpid();
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/*-----------------------------------------------------------*/
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if ((unsigned long)sbrk(16384) >= (-4095UL)) {
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perror("sbrk");
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tst_brkm(TFAIL, NULL, "Error: sbrk failed, errno = %d",
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errno);
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}
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if ((unsigned long)sbrk(-4097) >= (-4095UL)) {
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perror("sbrk");
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tst_brkm(TFAIL, NULL, "Error: sbrk failed, errno = %d",
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errno);
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}
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if ((shmid = shmget(key, 10 * K_1, IPC_CREAT | 0666)) < 0) {
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perror("shmget");
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tst_brkm(TFAIL,
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NULL,
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"Error: shmget Failed, shmid = %d, errno = %d",
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shmid, errno);
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}
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c1 = shmat(shmid, NULL, 0);
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if (c1 == (char *)-1) {
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perror("shmat");
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tst_resm(TFAIL,
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"Error: shmat Failed, shmid = %d, errno = %d",
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shmid, errno);
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rm_shm(shmid);
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tst_exit();
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}
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tst_resm(TPASS, "sbrk, sbrk, shmget, shmat");
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/*--------------------------------------------------------*/
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if ((unsigned long)sbrk(32 * K_1) >= (-4095UL)) {
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perror("sbrk");
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tst_resm(TFAIL, "Error: sbrk failed, errno = %d", errno);
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rm_shm(shmid);
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tst_exit();
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}
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vp = (void *)((char *)sbrk(0) - 2 * K_1);
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c2 = shmat(shmid, vp, 0);
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if (c2 != (char *)-1) {
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tst_resm(TFAIL,
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"ERROR: shmat: succeeded!: shmid = %d, shmaddr = %p, "
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"att_addr = %p", shmid, c2, vp);
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rm_shm(shmid);
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tst_exit();
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}
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tst_resm(TPASS, "sbrk, shmat");
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/*---------------------------------------------------------*/
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if ((unsigned long)sbrk(-16000) >= (-4095UL)) {
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perror("sbrk");
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tst_resm(TFAIL, "Error: sbrk failed, errno = %d", errno);
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rm_shm(shmid);
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tst_exit();
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}
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#ifdef __mips__
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vp = (void *)((char *)sbrk(0) + 256 * K_1);
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#elif defined(__powerpc__) || defined(__powerpc64__)
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vp = (void *)((char *)sbrk(0) + getpagesize());
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#else
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/* SHM_RND rounds vp on the nearest multiple of SHMLBA */
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vp = (void *)SHMALIGN((char *)sbrk(0) + 1);
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#endif
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c3 = shmat(shmid, vp, SHM_RND);
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if (c3 == (char *)-1) {
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perror("shmat1");
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tst_resm(TFAIL,
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"Error: shmat Failed, shmid = %d, errno = %d",
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shmid, errno);
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rm_shm(shmid);
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tst_exit();
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}
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tst_resm(TPASS, "sbrk, shmat");
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/*--------------------------------------------------------*/
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#if defined (__ia64__) || defined(__mips__) || defined(__hppa__) || defined(__arm__) || defined(__aarch64__)
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while ((vp = sbrk(INCREMENT)) != (void *)-1) ;
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if (errno != ENOMEM) {
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tst_resm(TFAIL, "Error: sbrk failed, errno = %d", errno);
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rm_shm(shmid);
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tst_exit();
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}
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#else
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if ((vp = sbrk(INCREMENT)) != (void *)-1) {
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tst_resm(TFAIL,
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"Error: sbrk succeeded! ret = %p, curbrk = %p, ",
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vp, sbrk(0));
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rm_shm(shmid);
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tst_exit();
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}
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#endif
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tst_resm(TPASS, "sbrk");
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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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static int rm_shm(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_brkm(TFAIL,
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NULL,
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"shmctl Failed to remove: shmid = %d, errno = %d",
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shmid, errno);
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}
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return (0);
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}
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