3027 installgrub can segfault when encountering bogus data on disk

   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  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
  23  */
  24 
  25 #ifndef _MBOOT_EXTRA_H
  26 #define _MBOOT_EXTRA_H
  27 
  28 #ifdef  __cplusplus
  29 extern "C" {
  30 #endif
  31 
  32 #include <stdarg.h>
  33 #include <sys/types.h>
  34 #include "bblk_einfo.h"
  35 
  36 /* multiboot header needs to be located in the first 32KB. */
  37 #define MBOOT_SCAN_SIZE         (32 * 1024 * 1024)
  38 
  39 /* multiboot header AOUT_KLUDGE flag. */
  40 #define BB_MBOOT_AOUT_FLAG      (0x00010000)
  41 
  42 /* Extra header preceeding the payloads at the end of the bootblock. */
  43 typedef struct _bb_extra_header {
  44         uint32_t        size;
  45         uint32_t        checksum;
  46 } bb_header_ext_t;
  47 
  48 uint32_t compute_checksum(char *, uint32_t);
  49 bblk_einfo_t *find_einfo(char *, uint32_t);
  50 int find_multiboot(char *, uint32_t, uint32_t *);
  51 void add_einfo(char *, char *, bblk_hs_t *, uint32_t);
  52 int compare_bootblocks(char *, char *, char **);
  53 
  54 #ifdef  __cplusplus
  55 }
  56 #endif
  57 
  58 #endif /* _MBOOT_EXTRA_H */
--- EOF ---