+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-#pragma once
-
-/***
- This file is part of systemd.
-
- Copyright 2011 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include "sparse-endian.h"
-
-#include "systemd/sd-id128.h"
-
-#include "macro.h"
-
-/*
- * If you change this file you probably should also change its documentation:
- *
- * http://www.freedesktop.org/wiki/Software/systemd/journal-files
- *
- */
-
-typedef struct Header Header;
-
-typedef struct ObjectHeader ObjectHeader;
-typedef union Object Object;
-
-typedef struct DataObject DataObject;
-typedef struct FieldObject FieldObject;
-typedef struct EntryObject EntryObject;
-typedef struct HashTableObject HashTableObject;
-typedef struct EntryArrayObject EntryArrayObject;
-typedef struct TagObject TagObject;
-
-typedef struct EntryItem EntryItem;
-typedef struct HashItem HashItem;
-
-typedef struct FSSHeader FSSHeader;
-
-/* Object types */
-typedef enum ObjectType {
- OBJECT_UNUSED, /* also serves as "any type" or "additional context" */
- OBJECT_DATA,
- OBJECT_FIELD,
- OBJECT_ENTRY,
- OBJECT_DATA_HASH_TABLE,
- OBJECT_FIELD_HASH_TABLE,
- OBJECT_ENTRY_ARRAY,
- OBJECT_TAG,
- _OBJECT_TYPE_MAX
-} ObjectType;
-
-/* Object flags */
-enum {
- OBJECT_COMPRESSED_XZ = 1 << 0,
- OBJECT_COMPRESSED_LZ4 = 1 << 1,
- _OBJECT_COMPRESSED_MAX
-};
-
-#define OBJECT_COMPRESSION_MASK (OBJECT_COMPRESSED_XZ | OBJECT_COMPRESSED_LZ4)
-
-struct ObjectHeader {
- uint8_t type;
- uint8_t flags;
- uint8_t reserved[6];
- le64_t size;
- uint8_t payload[];
-} _packed_;
-
-struct DataObject {
- ObjectHeader object;
- le64_t hash;
- le64_t next_hash_offset;
- le64_t next_field_offset;
- le64_t entry_offset; /* the first array entry we store inline */
- le64_t entry_array_offset;
- le64_t n_entries;
- uint8_t payload[];
-} _packed_;
-
-struct FieldObject {
- ObjectHeader object;
- le64_t hash;
- le64_t next_hash_offset;
- le64_t head_data_offset;
- uint8_t payload[];
-} _packed_;
-
-struct EntryItem {
- le64_t object_offset;
- le64_t hash;
-} _packed_;
-
-struct EntryObject {
- ObjectHeader object;
- le64_t seqnum;
- le64_t realtime;
- le64_t monotonic;
- sd_id128_t boot_id;
- le64_t xor_hash;
- EntryItem items[];
-} _packed_;
-
-struct HashItem {
- le64_t head_hash_offset;
- le64_t tail_hash_offset;
-} _packed_;
-
-struct HashTableObject {
- ObjectHeader object;
- HashItem items[];
-} _packed_;
-
-struct EntryArrayObject {
- ObjectHeader object;
- le64_t next_entry_array_offset;
- le64_t items[];
-} _packed_;
-
-#define TAG_LENGTH (256/8)
-
-struct TagObject {
- ObjectHeader object;
- le64_t seqnum;
- le64_t epoch;
- uint8_t tag[TAG_LENGTH]; /* SHA-256 HMAC */
-} _packed_;
-
-union Object {
- ObjectHeader object;
- DataObject data;
- FieldObject field;
- EntryObject entry;
- HashTableObject hash_table;
- EntryArrayObject entry_array;
- TagObject tag;
-};
-
-enum {
- STATE_OFFLINE = 0,
- STATE_ONLINE = 1,
- STATE_ARCHIVED = 2,
- _STATE_MAX
-};
-
-/* Header flags */
-enum {
- HEADER_INCOMPATIBLE_COMPRESSED_XZ = 1 << 0,
- HEADER_INCOMPATIBLE_COMPRESSED_LZ4 = 1 << 1,
-};
-
-#define HEADER_INCOMPATIBLE_ANY (HEADER_INCOMPATIBLE_COMPRESSED_XZ|HEADER_INCOMPATIBLE_COMPRESSED_LZ4)
-
-#if defined(HAVE_XZ) && defined(HAVE_LZ4)
-# define HEADER_INCOMPATIBLE_SUPPORTED HEADER_INCOMPATIBLE_ANY
-#elif defined(HAVE_XZ)
-# define HEADER_INCOMPATIBLE_SUPPORTED HEADER_INCOMPATIBLE_COMPRESSED_XZ
-#elif defined(HAVE_LZ4)
-# define HEADER_INCOMPATIBLE_SUPPORTED HEADER_INCOMPATIBLE_COMPRESSED_LZ4
-#else
-# define HEADER_INCOMPATIBLE_SUPPORTED 0
-#endif
-
-enum {
- HEADER_COMPATIBLE_SEALED = 1
-};
-
-#define HEADER_COMPATIBLE_ANY HEADER_COMPATIBLE_SEALED
-#ifdef HAVE_GCRYPT
-# define HEADER_COMPATIBLE_SUPPORTED HEADER_COMPATIBLE_SEALED
-#else
-# define HEADER_COMPATIBLE_SUPPORTED 0
-#endif
-
-#define HEADER_SIGNATURE ((char[]) { 'L', 'P', 'K', 'S', 'H', 'H', 'R', 'H' })
-
-struct Header {
- uint8_t signature[8]; /* "LPKSHHRH" */
- le32_t compatible_flags;
- le32_t incompatible_flags;
- uint8_t state;
- uint8_t reserved[7];
- sd_id128_t file_id;
- sd_id128_t machine_id;
- sd_id128_t boot_id; /* last writer */
- sd_id128_t seqnum_id;
- le64_t header_size;
- le64_t arena_size;
- le64_t data_hash_table_offset;
- le64_t data_hash_table_size;
- le64_t field_hash_table_offset;
- le64_t field_hash_table_size;
- le64_t tail_object_offset;
- le64_t n_objects;
- le64_t n_entries;
- le64_t tail_entry_seqnum;
- le64_t head_entry_seqnum;
- le64_t entry_array_offset;
- le64_t head_entry_realtime;
- le64_t tail_entry_realtime;
- le64_t tail_entry_monotonic;
- /* Added in 187 */
- le64_t n_data;
- le64_t n_fields;
- /* Added in 189 */
- le64_t n_tags;
- le64_t n_entry_arrays;
-
- /* Size: 224 */
-} _packed_;
-
-#define FSS_HEADER_SIGNATURE ((char[]) { 'K', 'S', 'H', 'H', 'R', 'H', 'L', 'P' })
-
-struct FSSHeader {
- uint8_t signature[8]; /* "KSHHRHLP" */
- le32_t compatible_flags;
- le32_t incompatible_flags;
- sd_id128_t machine_id;
- sd_id128_t boot_id; /* last writer */
- le64_t header_size;
- le64_t start_usec;
- le64_t interval_usec;
- le16_t fsprg_secpar;
- le16_t reserved[3];
- le64_t fsprg_state_size;
-} _packed_;
~ianmdlvl / elogind.git / blobdiff