1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * Test that there is no value of 'size' which can be passed to copyin 29 * to cause mischief. The somewhat odd order of operations ensures 30 * that we test both size = 0 and size = 0xfff...fff 31 */ 32 #include <sys/types.h> 33 34 35 #if defined(_LP64) 36 #define MAX_BITS 63 37 size_t size; 38 #else 39 #define MAX_BITS 31 40 size_t size; 41 #endif 42 43 syscall::: 44 /pid == $pid/ 45 { 46 printf("size = 0x%lx\n", (ulong_t)size); 47 } 48 49 syscall::: 50 /pid == $pid/ 51 { 52 tracemem(copyin(curthread->t_procp->p_user.u_envp, size), 10); 53 } 54 55 syscall::: 56 /pid == $pid && size > (1 << MAX_BITS)/ 57 { 58 exit(0); 59 } 60 61 syscall::: 62 /pid == $pid/ 63 { 64 size = (size << 1ULL) | 1ULL; 65 } 66