#include "sparse-endian.h"
-#include <systemd/sd-id128.h>
+#include "systemd/sd-id128.h"
#include "macro.h"
/* 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;
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 TAG_LENGTH (256/8)
-_packed_ struct TagObject {
+struct TagObject {
ObjectHeader object;
le64_t seqnum;
le64_t epoch;
uint8_t tag[TAG_LENGTH]; /* SHA-256 HMAC */
-};
+} _packed_;
union Object {
ObjectHeader object;
/* 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_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' })
-_packed_ struct Header {
+struct Header {
uint8_t signature[8]; /* "LPKSHHRH" */
le32_t compatible_flags;
le32_t incompatible_flags;
le64_t n_entry_arrays;
/* Size: 224 */
-};
+} _packed_;
#define FSS_HEADER_SIGNATURE ((char[]) { 'K', 'S', 'H', 'H', 'R', 'H', 'L', 'P' })
-_packed_ struct FSSHeader {
+struct FSSHeader {
uint8_t signature[8]; /* "KSHHRHLP" */
le32_t compatible_flags;
le32_t incompatible_flags;
le16_t fsprg_secpar;
le16_t reserved[3];
le64_t fsprg_state_size;
-};
+} _packed_;