/* * 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. */ /* * 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 #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; }