diff options
Diffstat (limited to 'cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/safety/tst.copyin2.d')
-rw-r--r-- | cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/safety/tst.copyin2.d | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/safety/tst.copyin2.d b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/safety/tst.copyin2.d new file mode 100644 index 0000000..aef0944 --- /dev/null +++ b/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/safety/tst.copyin2.d @@ -0,0 +1,67 @@ +/* + * 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; +} |