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/* $OpenBSD: mquery.c,v 1.2 2004/08/02 20:18:50 drahn Exp $ */
/*
* Copyright (c) 2003 Dale Rahn. All rights reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/mman.h>
#include <unistd.h>
#include <errno.h>
#include <machine/vmparam.h>
char chardata = 'a';
extern char etext;
extern char edata;
main()
{
void *addr;
void *ret;
void *bound_a;
void *bound_b;
/* check heap */
errno = 0;
addr = sbrk(0);
/* mquery fixed is not allowed in heap, check errno? */
ret = mquery(addr, 0x1000, PROT_READ|PROT_WRITE, MAP_FIXED, -1, 0);
if (ret != MAP_FAILED)
exit (1);
errno = 0;
addr = sbrk(0);
/* mquery should return next available address after heap. */
ret = mquery(addr, 0x1000, PROT_READ|PROT_WRITE, 0, -1, 0);
if (ret == MAP_FAILED)
exit (2);
/* check data */
errno = 0;
addr = &chardata;
/* mquery fixed is not allowed in heap, check errno? */
ret = mquery(addr, 0x1000, PROT_READ|PROT_WRITE, MAP_FIXED, -1, 0);
if (ret != MAP_FAILED)
exit (3);
errno = 0;
addr = &chardata;
/* mquery should return next available address after heap. */
ret = mquery(addr, 0x1000, PROT_READ|PROT_WRITE, 0, -1, 0);
if (ret == MAP_FAILED)
exit (4);
if (ret < (void *)&edata) {
printf("mquerry returned %p &edata %p\n",
ret, (void *)&edata);
/* should always return above data*/
exit (5);
}
#define PAD (64 * 1024 * 8)
bound_a = (void *)&chardata;
bound_b = (void *)(&chardata + MAXDSIZ-PAD);
/* chardata + MAXDSIZ is valid??? */
if (ret >= bound_a && ret < bound_b) {
printf("returned %p should be not be ~%p - ~%p\n",
ret, bound_a, bound_b);
exit (6);
}
/* check text */
errno = 0;
addr = &main;
/* mquery on text addresses should fail. */
ret = mquery(addr, 0x1000, PROT_READ|PROT_WRITE, MAP_FIXED, -1, 0);
if (ret != MAP_FAILED)
exit (7);
errno = 0;
addr = &main;
/* mquery on text addresses should return below data or above heap. */
ret = mquery(addr, 0x1000, PROT_READ|PROT_WRITE, 0, -1, 0);
if (ret == MAP_FAILED)
exit (8);
if (ret < (void *)&etext) {
/* should always return above text */
exit (9);
}
/* chardata + MAXDSIZ is valid??? */
if (ret >= (void *)&chardata && ret < (void *)(&chardata + MAXDSIZ))
exit (10);
exit (0);
}
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