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 */ 95