source: mainline/uspace/lib/gpt/libgpt.h@ cbd64057

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since cbd64057 was cbd64057, checked in by Dominik Taborsky (AT DOT) <brembyseznamcz>, 13 years ago

GPT library - alpha status
  • Property mode set to 100644
File size: 8.1 KB
Line 
1/*
2 * Copyright (c) 2009 Jiri Svoboda, 2011 Dominik Taborsky
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 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup libgpt
30 * @{
31 */
32/** @file
33 */
34
35#ifndef __GPT_H__
36#define __GPT_H__
37
38#include <sys/types.h>
39
40/** Block address of GPT header. */
41#define GPT_HDR_BA 1
42/** Block size of GPT header. */
43#define GPT_HDR_BS 1
44/** Minimum number of GPT partition entries */
45#define GPT_MIN_PART_NUM 128
46/** Basic number of GPT partition entries */
47#define GPT_BASE_PART_NUM (GPT_MIN_PART_NUM)
48
49/** GPT header signature ("EFI PART" in ASCII) */
50const uint8_t efi_signature[8] = {
51 0x45, 0x46, 0x49, 0x20, 0x50, 0x41, 0x52, 0x54
52};
53
54/** GPT header */
55typedef struct {
56 uint8_t efi_signature[8];
57 uint32_t revision;
58 uint32_t header_size;
59 uint32_t header_crc32;
60 uint32_t reserved;
61 uint64_t my_lba;
62 uint64_t alternate_lba;
63 uint64_t first_usable_lba;
64 uint64_t last_usable_lba;
65 uint8_t disk_guid[16];
66 uint64_t entry_lba;
67 uint32_t num_entries;
68 uint32_t entry_size;
69 uint32_t pe_array_crc32;
70} __attribute__((packed)) gpt_header_t;
71
72typedef struct {
73 /** Raw header. Has more bytes alloced than sizeof(gpt_header_t)!
74 * See gpt_read_gpt_header() to know why. */
75 gpt_header_t * raw_data;
76 /** Device where the data are from */
77 service_id_t device;
78 /** Linked list of partitions (initially NULL) */
79 //g_part_t * partitions; //shall we keep this? same problem as in libmbr
80 //NOTE: if we have partition list here, do we free() it or not?
81} gpt_t;
82
83/** GPT partition entry */
84typedef struct {
85 uint8_t part_type[16];
86 uint8_t part_id[16];
87 uint64_t start_lba;
88 uint64_t end_lba;
89 uint64_t attributes;
90 uint8_t part_name[72];
91} __attribute__((packed)) gpt_entry_t;
92
93typedef struct g_part {
94 /** Partition entry is in use */
95 bool present;
96 /** Address of first block */
97 aoff64_t start_addr;
98 /** Number of blocks */
99 aoff64_t length;
100 /** Raw data access */
101 gpt_entry_t raw_data; //TODO: a pointer or just a member?
102}g_part_t;
103
104typedef struct gpt_parts {
105 /** Number of entries */
106 unsigned int num_ent;
107 /** Size of the array */
108 unsigned int arr_size;
109 /** Resizable partition array */
110 gpt_entry_t * part_array;
111
112} gpt_parts_t;
113
114struct partition_type {
115 const char * desc;
116 const char * guid;
117}
118
119struct partition_type gpt_ptypes[] {
120 { "Unused entry", "00000000-0000-0000-0000-000000000000" },
121 { "MBR partition scheme", "024DEE41-33E7-11D3-9D69-0008C781F39F" },
122 { "EFI System", "C12A7328-F81F-11D2-BA4B-00A0C93EC93B" },
123 { "BIOS Boot", "21686148-6449-6E6F-744E-656564454649" },
124 { "Windows Reserved", "E3C9E316-0B5C-4DB8-817D-F92DF00215AE" },
125 { "Windows Basic data", "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7" },
126 { "Windows LDM metadata", "5808C8AA-7E8F-42E0-85D2-E1E90434CFB3" },
127 { "Windows LDM data", "AF9B60A0-1431-4F62-BC68-3311714A69AD" },
128 { "Windows Recovery Environment", "DE94BBA4-06D1-4D40-A16A-BFD50179D6AC" },
129 { "Windows IBM GPFS", "37AFFC90-EF7D-4E96-91C3-2D7AE055B174" },
130 { "Windows Cluster metadata", "DB97DBA9-0840-4BAE-97F0-FFB9A327C7E1" },
131 { "HP-UX Data", "75894C1E-3AEB-11D3-B7C1-7B03A0000000" },
132 { "HP-UX Service", "E2A1E728-32E3-11D6-A682-7B03A0000000" },
133 { "Linux filesystem data", "EBD0A0A2-B9E5-4433-87C0-68B6B72699C7" },
134 { "Linux filesystem data", "0FC63DAF-8483-4772-8E79-3D69D8477DE4" },
135 { "Linux RAID", "A19D880F-05FC-4D3B-A006-743F0F84911E" },
136 { "Linux Swap", "0657FD6D-A4AB-43C4-84E5-0933C84B4F4F" },
137 { "Linux LVM", "E6D6D379-F507-44C2-A23C-238F2A3DF928" },
138 { "Linux Reserved", "8DA63339-0007-60C0-C436-083AC8230908" },
139 { "FreeBSD Boot", "83BD6B9D-7F41-11DC-BE0B-001560B84F0F" },
140 { "FreeBSD Data", "516E7CB4-6ECF-11D6-8FF8-00022D09712B" },
141 { "FreeBSD Swap", "516E7CB5-6ECF-11D6-8FF8-00022D09712B" },
142 { "FreeBSD UFS", "516E7CB6-6ECF-11D6-8FF8-00022D09712B" },
143 { "FreeBSD Vinum VM", "516E7CB8-6ECF-11D6-8FF8-00022D09712B" },
144 { "FreeBSD ZFS", "516E7CBA-6ECF-11D6-8FF8-00022D09712B" },
145 { "Mac OS X HFS+", "48465300-0000-11AA-AA11-00306543ECAC" },
146 { "Mac OS X UFS", "55465300-0000-11AA-AA11-00306543ECAC" },
147 { "Mac OS X ZFS", "6A898CC3-1DD2-11B2-99A6-080020736631" },
148 { "Mac OS X RAID", "52414944-0000-11AA-AA11-00306543ECAC" },
149 { "Mac OS X RAID, offline", "52414944-5F4F-11AA-AA11-00306543ECAC" },
150 { "Mac OS X Boot", "426F6F74-0000-11AA-AA11-00306543ECAC" },
151 { "Mac OS X Label", "4C616265-6C00-11AA-AA11-00306543ECAC" },
152 { "Mac OS X TV Recovery", "5265636F-7665-11AA-AA11-00306543ECAC" },
153 { "Mac OS X Core Storage", "53746F72-6167-11AA-AA11-00306543ECAC" },
154 { "Solaris Boot", "6A82CB45-1DD2-11B2-99A6-080020736631" },
155 { "Solaris Root", "6A85CF4D-1DD2-11B2-99A6-080020736631" },
156 { "Solaris Swap", "6A87C46F-1DD2-11B2-99A6-080020736631" },
157 { "Solaris Backup", "6A8B642B-1DD2-11B2-99A6-080020736631" },
158 { "Solaris /usr", "6A898CC3-1DD2-11B2-99A6-080020736631" },
159 { "Solaris /var", "6A8EF2E9-1DD2-11B2-99A6-080020736631" },
160 { "Solaris /home", "6A90BA39-1DD2-11B2-99A6-080020736631" },
161 { "Solaris Alternate sector", "6A9283A5-1DD2-11B2-99A6-080020736631" },
162 { "Solaris Reserved", "6A945A3B-1DD2-11B2-99A6-080020736631" },
163 { "Solaris Reserved", "6A9630D1-1DD2-11B2-99A6-080020736631" },
164 { "Solaris Reserved", "6A980767-1DD2-11B2-99A6-080020736631" },
165 { "Solaris Reserved", "6A96237F-1DD2-11B2-99A6-080020736631" },
166 { "Solaris Reserved", "6A8D2AC7-1DD2-11B2-99A6-080020736631" },
167 { "NetBSD Swap", "49F48D32-B10E-11DC-B99B-0019D1879648" },
168 { "NetBSD FFS", "49F48D5A-B10E-11DC-B99B-0019D1879648" },
169 { "NetBSD LFS", "49F48D82-B10E-11DC-B99B-0019D1879648" },
170 { "NetBSD RAID", "49F48DAA-B10E-11DC-B99B-0019D1879648" },
171 { "NetBSD Concatenated", "2DB519C4-B10F-11DC-B99B-0019D1879648" },
172 { "NetBSD Encrypted", "2DB519EC-B10F-11DC-B99B-0019D1879648" },
173 { "ChromeOS ChromeOS kernel", "FE3A2A5D-4F32-41A7-B725-ACCC3285A309" },
174 { "ChromeOS rootfs", "3CB8E202-3B7E-47DD-8A3C-7FF2A13CFCEC" },
175 { "ChromeOS future use", "2E0A753D-9E48-43B0-8337-B15192CB1B5E" },
176 { "MidnightBSD Boot", "85D5E45E-237C-11E1-B4B3-E89A8F7FC3A7" },
177 { "MidnightBSD Data", "85D5E45A-237C-11E1-B4B3-E89A8F7FC3A7" },
178 { "MidnightBSD Swap", "85D5E45B-237C-11E1-B4B3-E89A8F7FC3A7" },
179 { "MidnightBSD UFS", "0394Ef8B-237E-11E1-B4B3-E89A8F7FC3A7" },
180 { "MidnightBSD Vinum VM", "85D5E45C-237C-11E1-B4B3-E89A8F7FC3A7" },
181 { "MidnightBSD ZFS", "85D5E45D-237C-11E1-B4B3-E89A8F7FC3A7" }
182};
183
184
185extern gpt_t * gpt_read_gpt_header(service_id_t dev_handle);
186extern int gpt_write_gpt_header(gpt_header_t header, service_id_t dev_handle);
187
188extern gpt_parts_t * gpt_read_partitions(gpt_t * gpt);
189extern int gpt_write_partitions(gpt_parts_t * parts, gpt_t * header);
190extern gpt_parts_t * gpt_add_partition(gpt_parts_t * parts, g_part_t partition);
191extern gpt_parts_t * gpt_remove_partition(gpt_parts_t * parts, int idx);
192
193extern void gpt_free_gpt(gpt_t * gpt);
194extern void gpt_free_partitions(gpt_parts_t * parts);
195
196#endif
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