Szymon Starzycki | b6c5f28 | 2013-07-24 17:08:04 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2009-2013, Google Inc. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in |
| 12 | * the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * * Neither the name of Google, Inc. nor the names of its contributors |
| 15 | * may be used to endorse or promote products derived from this |
| 16 | * software without specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 19 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 20 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 21 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 22 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 23 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 24 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 25 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 26 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 27 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 28 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 29 | * SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | |
| 33 | #ifndef __FASTBOOTD_PATITIONS_ |
| 34 | #define __FASTBOOTD_PATITIONS_ |
| 35 | |
| 36 | #include <stdint.h> |
| 37 | |
| 38 | #define GPT_ENTRIES 128 |
| 39 | #define GPT_NAMELEN 36 |
| 40 | |
Szymon Starzycki | b88fa32 | 2013-09-17 14:17:32 -0700 | [diff] [blame] | 41 | #define GPT_FLAG_SYSTEM (1ULL << 0) |
| 42 | #define GPT_FLAG_BOOTABLE (1ULL << 2) |
| 43 | #define GPT_FLAG_READONLY (1ULL << 60) |
| 44 | #define GPT_FLAG_DOAUTOMOUNT (1ULL << 63) |
| 45 | |
Szymon Starzycki | b6c5f28 | 2013-07-24 17:08:04 -0700 | [diff] [blame] | 46 | // it should be passed in little endian order |
| 47 | struct GPT_entry_raw { |
| 48 | uint8_t type_guid[16]; |
| 49 | uint8_t partition_guid[16]; |
| 50 | uint64_t first_lba; // little endian |
| 51 | uint64_t last_lba; |
| 52 | uint64_t flags; |
| 53 | uint16_t name[GPT_NAMELEN]; // UTF-16 LE |
| 54 | }; |
| 55 | |
| 56 | struct GPT_mapping { |
| 57 | void *map_ptr; |
| 58 | void *ptr; |
| 59 | unsigned size; |
| 60 | }; |
| 61 | |
| 62 | struct GPT_entry_table { |
| 63 | int fd; |
| 64 | |
| 65 | struct GPT_mapping header_map; |
| 66 | struct GPT_mapping entries_map; |
| 67 | struct GPT_mapping sec_header_map; |
| 68 | struct GPT_mapping sec_entries_map; |
| 69 | |
| 70 | struct GPT_header *header; |
| 71 | struct GPT_entry_raw *entries; |
| 72 | struct GPT_header *second_header; |
| 73 | struct GPT_entry_raw *second_entries; |
| 74 | |
| 75 | unsigned sector_size; |
| 76 | unsigned partition_table_size; |
| 77 | int second_valid; |
| 78 | }; |
| 79 | |
| 80 | struct GPT_header { |
| 81 | uint8_t signature[8]; |
| 82 | uint32_t revision; |
| 83 | uint32_t header_size; |
| 84 | uint32_t header_checksum; |
| 85 | uint32_t reserved_zeros; |
| 86 | uint64_t current_lba; |
| 87 | uint64_t backup_lba; |
| 88 | uint64_t first_usable_lba; |
| 89 | uint64_t last_usable_lba; |
| 90 | uint8_t disk_guid[16]; |
| 91 | uint64_t entries_lba; |
| 92 | uint32_t entries_count; |
| 93 | uint32_t entry_size; |
| 94 | uint32_t partition_array_checksum; |
| 95 | // the rest should be filled with zeros |
| 96 | } __attribute__((packed)); |
| 97 | |
| 98 | struct GPT_content { |
| 99 | struct GPT_header header; |
| 100 | struct GPT_entry_raw *entries; |
| 101 | }; |
| 102 | |
| 103 | |
| 104 | struct GPT_entry_table* GPT_get_device(const char *, unsigned lba); |
| 105 | |
| 106 | void GPT_release_device(struct GPT_entry_table *); |
| 107 | |
| 108 | void GPT_edit_entry(struct GPT_entry_table *table, |
| 109 | struct GPT_entry_raw *old_entry, |
| 110 | struct GPT_entry_raw *new_entry); |
| 111 | |
| 112 | int GPT_delete_entry(struct GPT_entry_table *table, struct GPT_entry_raw *entry); |
| 113 | |
| 114 | void GPT_add_entry(struct GPT_entry_table *table, struct GPT_entry_raw *entry); |
| 115 | |
| 116 | struct GPT_entry_raw *GPT_get_pointer(struct GPT_entry_table *table, struct GPT_entry_raw *entry); |
| 117 | struct GPT_entry_raw *GPT_get_pointer_by_guid(struct GPT_entry_table *, const char *); |
| 118 | struct GPT_entry_raw *GPT_get_pointer_by_name(struct GPT_entry_table *, const char *); |
| 119 | |
| 120 | //Use after every edit operation |
| 121 | void GPT_sync(); |
| 122 | |
| 123 | void GPT_to_UTF16(uint16_t *, const char *, int ); |
| 124 | void GPT_from_UTF16(char *, const uint16_t *, int); |
| 125 | |
| 126 | int GPT_parse_entry(char *string, struct GPT_entry_raw *entry); |
| 127 | |
| 128 | void GPT_default_content(struct GPT_content *content, struct GPT_entry_table *table); |
| 129 | |
| 130 | void GPT_release_content(struct GPT_content *content); |
| 131 | |
| 132 | int GPT_parse_file(int fd, struct GPT_content *content); |
| 133 | |
| 134 | int GPT_write_content(const char *device, struct GPT_content *content); |
| 135 | |
| 136 | int gpt_mmap(struct GPT_mapping *mapping, uint64_t location, int size, int fd); |
| 137 | |
| 138 | void gpt_unmap(struct GPT_mapping *mapping); |
| 139 | |
| 140 | #endif |