usr/src/cmd/boot/common/bblk_einfo.h

   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 _BBLKEINFO_H
  26 #define _BBLKEINFO_H
  27
  28 #ifdef  __cplusplus
  29 extern "C" {
  30 #endif
  31
  32 #include <stdint.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35 #include <md5.h>
  36
  37 #define BBLK_EINFO_VERSION      (1)
  38
  39 #define EINFO_MAGIC             "EXTINFO"
  40 #define EINFO_MAGIC_SIZE        (7)
  41
  42 #pragma pack(1)
  43 typedef struct _extended_info {
  44         char            magic[EINFO_MAGIC_SIZE];
  45         uint8_t         version;
  46         uint8_t         flags;
  47         uint32_t        str_off;
  48         uint16_t        str_size;
  49         uint8_t         hash_type;
  50         uint32_t        hash_off;
  51         uint16_t        hash_size;
  52         char            rsvd[32];
  53 } bblk_einfo_t;
  54 #pragma pack()
  55
  56 enum bblk_hash_types_t {
  57         BBLK_NO_HASH = 0,
  58         BBLK_HASH_MD5,
  59         BBLK_HASH_TOT
  60 };
  61
  62 #define EINFO_PRINT_HEADER      0x01
  63 #define EINFO_EASY_PARSE        0x02
  64
  65 typedef struct _hashing_function {
  66         unsigned int    type;
  67         unsigned int    size;
  68         char            name[16];
  69         void            (*compute_hash)(void *, const void *, unsigned int);
  70 } bblk_hash_t;
  71
  72 typedef struct _hashing_source {
  73         unsigned char   *src_buf;
  74         unsigned int    src_size;
  75 } bblk_hs_t;
  76
  77 #define BBLK_DEFAULT_HASH       BBLK_HASH_MD5
  78
  79 extern bblk_hash_t      bblk_no_hash;
  80 extern bblk_hash_t      bblk_md5_hash;
  81 extern bblk_hash_t      *bblk_hash_list[BBLK_HASH_TOT];
  82
  83 void print_einfo(uint8_t, bblk_einfo_t *, unsigned long);
  84 int prepare_and_write_einfo(unsigned char *, char *, bblk_hs_t *,
  85     uint32_t, uint32_t *);
  86 boolean_t einfo_should_update(bblk_einfo_t *, bblk_hs_t *, char *);
  87 char *einfo_get_string(bblk_einfo_t *);
  88 char *einfo_get_hash(bblk_einfo_t *);
  89
  90 #ifdef  __cplusplus
  91 }
  92 #endif
  93
  94 #endif /* _BBLKEINFO_H */