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author | pjd <pjd@FreeBSD.org> | 2006-01-31 11:09:21 +0000 |
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committer | pjd <pjd@FreeBSD.org> | 2006-01-31 11:09:21 +0000 |
commit | 645dd7b662b95a91b935a1b4b9d354770a873a8d (patch) | |
tree | 5578d06f9b3e97650d2847a2198d21f29bb26546 /sys/vm/redzone.h | |
parent | 8920c8cd7449851a87b664de80046b23913acd5e (diff) | |
download | FreeBSD-src-645dd7b662b95a91b935a1b4b9d354770a873a8d.zip FreeBSD-src-645dd7b662b95a91b935a1b4b9d354770a873a8d.tar.gz |
Add buffer corruption protection (RedZone) for kernel's malloc(9).
It detects both: buffer underflows and buffer overflows bugs at runtime
(on free(9) and realloc(9)) and prints backtraces from where memory was
allocated and from where it was freed.
Tested by: kris
Diffstat (limited to 'sys/vm/redzone.h')
-rw-r--r-- | sys/vm/redzone.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/sys/vm/redzone.h b/sys/vm/redzone.h new file mode 100644 index 0000000..8738d7e --- /dev/null +++ b/sys/vm/redzone.h @@ -0,0 +1,38 @@ +/*- + * Copyright (c) 2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> + * 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 AUTHORS AND CONTRIBUTORS ``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 AUTHORS OR CONTRIBUTORS 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. + * + * $FreeBSD$ + */ + +#ifndef _VM_REDZONE_H_ +#define _VM_REDZONE_H_ + +u_long redzone_get_size(caddr_t naddr); +u_long redzone_size_ntor(u_long nsize); +void *redzone_addr_ntor(caddr_t naddr); +void *redzone_setup(caddr_t raddr, u_long nsize); +void redzone_check(caddr_t naddr); + +#endif /* _VM_REDZONE_H_ */ |