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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Test that there is no value of 'size' which can be passed to copyin
* to cause mischief. The somewhat odd order of operations ensures
* that we test both size = 0 and size = 0xfff...fff
*/
#include <sys/types.h>
#if defined(_LP64)
#define MAX_BITS 63
size_t size;
#else
#define MAX_BITS 31
size_t size;
#endif
syscall:::
/pid == $pid/
{
printf("size = 0x%lx\n", (ulong_t)size);
}
syscall:::
/pid == $pid/
{
tracemem(copyin(curthread->t_procp->p_user.u_envp, size), 10);
}
syscall:::
/pid == $pid && size > (1 << MAX_BITS)/
{
exit(0);
}
syscall:::
/pid == $pid/
{
size = (size << 1ULL) | 1ULL;
}
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