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87d2c1ff LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | #ifndef foojournaldefhfoo | |
4 | #define foojournaldefhfoo | |
5 | ||
6 | /*** | |
7 | This file is part of systemd. | |
8 | ||
9 | Copyright 2011 Lennart Poettering | |
10 | ||
11 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
12 | under the terms of the GNU Lesser General Public License as published by |
13 | the Free Software Foundation; either version 2.1 of the License, or | |
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14 | (at your option) any later version. |
15 | ||
16 | systemd is distributed in the hope that it will be useful, but | |
17 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 19 | Lesser General Public License for more details. |
87d2c1ff | 20 | |
5430f7f2 | 21 | You should have received a copy of the GNU Lesser General Public License |
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22 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
23 | ***/ | |
24 | ||
4fd052ae | 25 | #include "sparse-endian.h" |
87d2c1ff | 26 | |
81527be1 LP |
27 | #include <systemd/sd-id128.h> |
28 | ||
87d2c1ff | 29 | #include "macro.h" |
87d2c1ff LP |
30 | |
31 | typedef struct Header Header; | |
8144056f | 32 | |
87d2c1ff LP |
33 | typedef struct ObjectHeader ObjectHeader; |
34 | typedef union Object Object; | |
8144056f | 35 | |
87d2c1ff | 36 | typedef struct DataObject DataObject; |
de190aef | 37 | typedef struct FieldObject FieldObject; |
87d2c1ff LP |
38 | typedef struct EntryObject EntryObject; |
39 | typedef struct HashTableObject HashTableObject; | |
de190aef | 40 | typedef struct EntryArrayObject EntryArrayObject; |
8144056f LP |
41 | typedef struct SignatureObject SignatureObject; |
42 | ||
87d2c1ff LP |
43 | typedef struct EntryItem EntryItem; |
44 | typedef struct HashItem HashItem; | |
45 | ||
46 | /* Object types */ | |
47 | enum { | |
48 | OBJECT_UNUSED, | |
49 | OBJECT_DATA, | |
de190aef | 50 | OBJECT_FIELD, |
87d2c1ff | 51 | OBJECT_ENTRY, |
de190aef LP |
52 | OBJECT_DATA_HASH_TABLE, |
53 | OBJECT_FIELD_HASH_TABLE, | |
54 | OBJECT_ENTRY_ARRAY, | |
8144056f | 55 | OBJECT_SIGNATURE, |
de190aef | 56 | _OBJECT_TYPE_MAX |
87d2c1ff LP |
57 | }; |
58 | ||
807e17f0 LP |
59 | /* Object flags */ |
60 | enum { | |
61 | OBJECT_COMPRESSED = 1 | |
62 | }; | |
63 | ||
87d2c1ff LP |
64 | _packed_ struct ObjectHeader { |
65 | uint8_t type; | |
807e17f0 LP |
66 | uint8_t flags; |
67 | uint8_t reserved[6]; | |
4fd052ae | 68 | le64_t size; |
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69 | uint8_t payload[]; |
70 | }; | |
71 | ||
72 | _packed_ struct DataObject { | |
73 | ObjectHeader object; | |
4fd052ae FC |
74 | le64_t hash; |
75 | le64_t next_hash_offset; | |
76 | le64_t next_field_offset; | |
77 | le64_t entry_offset; /* the first array entry we store inline */ | |
78 | le64_t entry_array_offset; | |
79 | le64_t n_entries; | |
de190aef LP |
80 | uint8_t payload[]; |
81 | }; | |
82 | ||
83 | _packed_ struct FieldObject { | |
84 | ObjectHeader object; | |
4fd052ae FC |
85 | le64_t hash; |
86 | le64_t next_hash_offset; | |
87 | le64_t head_data_offset; | |
88 | le64_t tail_data_offset; | |
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89 | uint8_t payload[]; |
90 | }; | |
91 | ||
92 | _packed_ struct EntryItem { | |
4fd052ae FC |
93 | le64_t object_offset; |
94 | le64_t hash; | |
87d2c1ff LP |
95 | }; |
96 | ||
97 | _packed_ struct EntryObject { | |
98 | ObjectHeader object; | |
4fd052ae FC |
99 | le64_t seqnum; |
100 | le64_t realtime; | |
101 | le64_t monotonic; | |
cec736d2 | 102 | sd_id128_t boot_id; |
4fd052ae | 103 | le64_t xor_hash; |
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104 | EntryItem items[]; |
105 | }; | |
106 | ||
107 | _packed_ struct HashItem { | |
4fd052ae FC |
108 | le64_t head_hash_offset; |
109 | le64_t tail_hash_offset; | |
87d2c1ff LP |
110 | }; |
111 | ||
112 | _packed_ struct HashTableObject { | |
113 | ObjectHeader object; | |
de190aef | 114 | HashItem items[]; |
87d2c1ff LP |
115 | }; |
116 | ||
de190aef | 117 | _packed_ struct EntryArrayObject { |
87d2c1ff | 118 | ObjectHeader object; |
4fd052ae FC |
119 | le64_t next_entry_array_offset; |
120 | le64_t items[]; | |
87d2c1ff LP |
121 | }; |
122 | ||
8144056f LP |
123 | #define SIGNATURE_LENGTH 160 |
124 | ||
125 | _packed_ struct SignatureObject { | |
126 | ObjectHeader object; | |
127 | le64_t from; | |
128 | uint8_t signature[SIGNATURE_LENGTH]; | |
129 | }; | |
130 | ||
87d2c1ff LP |
131 | union Object { |
132 | ObjectHeader object; | |
133 | DataObject data; | |
de190aef | 134 | FieldObject field; |
87d2c1ff LP |
135 | EntryObject entry; |
136 | HashTableObject hash_table; | |
de190aef | 137 | EntryArrayObject entry_array; |
8144056f | 138 | SignatureObject signature; |
87d2c1ff LP |
139 | }; |
140 | ||
141 | enum { | |
142 | STATE_OFFLINE, | |
143 | STATE_ONLINE, | |
144 | STATE_ARCHIVED | |
145 | }; | |
146 | ||
807e17f0 LP |
147 | /* Header flags */ |
148 | enum { | |
149 | HEADER_INCOMPATIBLE_COMPRESSED = 1 | |
150 | }; | |
151 | ||
8144056f LP |
152 | enum { |
153 | HEADER_COMPATIBLE_SIGNED = 1 | |
154 | }; | |
155 | ||
87d2c1ff LP |
156 | _packed_ struct Header { |
157 | uint8_t signature[8]; /* "LPKSHHRH" */ | |
158 | uint32_t compatible_flags; | |
159 | uint32_t incompatible_flags; | |
de190aef LP |
160 | uint8_t state; |
161 | uint8_t reserved[7]; | |
87d2c1ff | 162 | sd_id128_t file_id; |
08984293 LP |
163 | sd_id128_t machine_id; /* last writer */ |
164 | sd_id128_t boot_id; /* last writer */ | |
cec736d2 | 165 | sd_id128_t seqnum_id; |
23b0b2b2 | 166 | le64_t header_size; |
4fd052ae FC |
167 | le64_t arena_size; |
168 | le64_t data_hash_table_offset; /* for looking up data objects */ | |
169 | le64_t data_hash_table_size; | |
170 | le64_t field_hash_table_offset; /* for looking up field objects */ | |
171 | le64_t field_hash_table_size; | |
172 | le64_t tail_object_offset; | |
173 | le64_t n_objects; | |
174 | le64_t n_entries; | |
175 | le64_t seqnum; | |
176 | le64_t first_seqnum; | |
177 | le64_t entry_array_offset; | |
178 | le64_t head_entry_realtime; | |
179 | le64_t tail_entry_realtime; | |
180 | le64_t tail_entry_monotonic; | |
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181 | }; |
182 | ||
183 | #endif |