#include "sparse-endian.h"
-#include <systemd/sd-id128.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 struct EntryObject EntryObject;
typedef struct HashTableObject HashTableObject;
typedef struct EntryArrayObject EntryArrayObject;
-typedef struct SignatureObject SignatureObject;
+typedef struct TagObject TagObject;
typedef struct EntryItem EntryItem;
typedef struct HashItem HashItem;
+typedef struct FSSHeader FSSHeader;
+
/* Object types */
-enum {
- OBJECT_UNUSED,
+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_SIGNATURE,
+ OBJECT_TAG,
_OBJECT_TYPE_MAX
-};
+} ObjectType;
/* Object flags */
enum {
- OBJECT_COMPRESSED = 1
+ OBJECT_COMPRESSED_XZ = 1 << 0,
+ OBJECT_COMPRESSED_LZ4 = 1 << 1,
+ _OBJECT_COMPRESSED_MAX
};
-_packed_ struct ObjectHeader {
+#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_;
-_packed_ struct DataObject {
+struct DataObject {
ObjectHeader object;
le64_t hash;
le64_t next_hash_offset;
le64_t entry_array_offset;
le64_t n_entries;
uint8_t payload[];
-};
+} _packed_;
-_packed_ struct FieldObject {
+struct FieldObject {
ObjectHeader object;
le64_t hash;
le64_t next_hash_offset;
le64_t head_data_offset;
- le64_t tail_data_offset;
uint8_t payload[];
-};
+} _packed_;
-_packed_ struct EntryItem {
+struct EntryItem {
le64_t object_offset;
le64_t hash;
-};
+} _packed_;
-_packed_ struct EntryObject {
+struct EntryObject {
ObjectHeader object;
le64_t seqnum;
le64_t realtime;
sd_id128_t boot_id;
le64_t xor_hash;
EntryItem items[];
-};
+} _packed_;
-_packed_ struct HashItem {
+struct HashItem {
le64_t head_hash_offset;
le64_t tail_hash_offset;
-};
+} _packed_;
-_packed_ struct HashTableObject {
+struct HashTableObject {
ObjectHeader object;
HashItem items[];
-};
+} _packed_;
-_packed_ struct EntryArrayObject {
+struct EntryArrayObject {
ObjectHeader object;
le64_t next_entry_array_offset;
le64_t items[];
-};
+} _packed_;
-#define SIGNATURE_LENGTH 160
+#define TAG_LENGTH (256/8)
-_packed_ struct SignatureObject {
+struct TagObject {
ObjectHeader object;
- le64_t from;
- uint8_t signature[SIGNATURE_LENGTH];
-};
+ le64_t seqnum;
+ le64_t epoch;
+ uint8_t tag[TAG_LENGTH]; /* SHA-256 HMAC */
+} _packed_;
union Object {
ObjectHeader object;
EntryObject entry;
HashTableObject hash_table;
EntryArrayObject entry_array;
- SignatureObject signature;
+ TagObject tag;
};
enum {
- STATE_OFFLINE,
- STATE_ONLINE,
- STATE_ARCHIVED
+ STATE_OFFLINE = 0,
+ STATE_ONLINE = 1,
+ STATE_ARCHIVED = 2,
+ _STATE_MAX
};
/* Header flags */
enum {
- HEADER_INCOMPATIBLE_COMPRESSED = 1
+ 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_SIGNED = 1
+ HEADER_COMPATIBLE_SEALED = 1
};
-_packed_ struct Header {
+#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" */
- uint32_t compatible_flags;
- uint32_t incompatible_flags;
+ 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; /* last writer */
+ 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; /* for looking up data objects */
+ le64_t data_hash_table_offset;
le64_t data_hash_table_size;
- le64_t field_hash_table_offset; /* for looking up field objects */
+ 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_seqnum;
- le64_t head_seqnum;
+ 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;
/* 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