#include <gcrypt.h>
#endif
-#include <systemd/sd-id128.h>
+#include "sd-id128.h"
#include "sparse-endian.h"
#include "journal-def.h"
-#include "util.h"
+#include "macro.h"
#include "mmap-cache.h"
+#include "hashmap.h"
typedef struct JournalMetrics {
uint64_t max_use;
+ uint64_t use;
uint64_t max_size;
uint64_t min_size;
uint64_t keep_free;
} JournalMetrics;
+typedef enum direction {
+ DIRECTION_UP,
+ DIRECTION_DOWN
+} direction_t;
+
+typedef enum LocationType {
+ /* The first and last entries, resp. */
+ LOCATION_HEAD,
+ LOCATION_TAIL,
+
+ /* We already read the entry we currently point to, and the
+ * next one to read should probably not be this one again. */
+ LOCATION_DISCRETE,
+
+ /* We should seek to the precise location specified, and
+ * return it, as we haven't read it yet. */
+ LOCATION_SEEK
+} LocationType;
+
typedef struct JournalFile {
int fd;
- char *path;
- struct stat last_stat;
+
mode_t mode;
int flags;
int prot;
- bool writable;
- bool compress;
- bool authenticate;
+ bool writable:1;
+ bool compress_xz:1;
+ bool compress_lz4:1;
+ bool seal:1;
+ bool defrag_on_close:1;
+
+ bool tail_entry_monotonic_valid:1;
- bool tail_entry_monotonic_valid;
+ direction_t last_direction;
+ LocationType location_type;
+ uint64_t last_n_entries;
+
+ char *path;
+ struct stat last_stat;
+ usec_t last_stat_usec;
Header *header;
HashItem *data_hash_table;
HashItem *field_hash_table;
uint64_t current_offset;
+ uint64_t current_seqnum;
+ uint64_t current_realtime;
+ uint64_t current_monotonic;
+ sd_id128_t current_boot_id;
+ uint64_t current_xor_hash;
JournalMetrics metrics;
MMapCache *mmap;
-#ifdef HAVE_XZ
+ OrderedHashmap *chain_cache;
+
+#if defined(HAVE_XZ) || defined(HAVE_LZ4)
void *compress_buffer;
- uint64_t compress_buffer_size;
+ size_t compress_buffer_size;
#endif
#ifdef HAVE_GCRYPT
gcry_md_hd_t hmac;
bool hmac_running;
- FSPRGHeader *fsprg_header;
- size_t fsprg_size;
+ FSSHeader *fss_file;
+ size_t fss_file_size;
+
+ uint64_t fss_start_usec;
+ uint64_t fss_interval_usec;
+
+ void *fsprg_state;
+ size_t fsprg_state_size;
+
+ void *fsprg_seed;
+ size_t fsprg_seed_size;
#endif
} JournalFile;
-typedef enum direction {
- DIRECTION_UP,
- DIRECTION_DOWN
-} direction_t;
-
int journal_file_open(
const char *fname,
int flags,
mode_t mode,
bool compress,
- bool authenticate,
+ bool seal,
JournalMetrics *metrics,
MMapCache *mmap_cache,
JournalFile *template,
JournalFile **ret);
+int journal_file_set_offline(JournalFile *f);
void journal_file_close(JournalFile *j);
int journal_file_open_reliably(
int flags,
mode_t mode,
bool compress,
- bool authenticate,
+ bool seal,
JournalMetrics *metrics,
MMapCache *mmap_cache,
JournalFile *template,
JournalFile **ret);
#define ALIGN64(x) (((x) + 7ULL) & ~7ULL)
+#define VALID64(x) (((x) & 7ULL) == 0ULL)
+
+/* Use six characters to cover the offsets common in smallish journal
+ * files without adding too many zeros. */
+#define OFSfmt "%06"PRIx64
+
+static inline bool VALID_REALTIME(uint64_t u) {
+ /* This considers timestamps until the year 3112 valid. That should be plenty room... */
+ return u > 0 && u < (1ULL << 55);
+}
+
+static inline bool VALID_MONOTONIC(uint64_t u) {
+ /* This considers timestamps until 1142 years of runtime valid. */
+ return u < (1ULL << 55);
+}
+
+static inline bool VALID_EPOCH(uint64_t u) {
+ /* This allows changing the key for 1142 years, every usec. */
+ return u < (1ULL << 55);
+}
#define JOURNAL_HEADER_CONTAINS(h, field) \
(le64toh((h)->header_size) >= offsetof(Header, field) + sizeof((h)->field))
-int journal_file_move_to_object(JournalFile *f, int type, uint64_t offset, Object **ret);
+#define JOURNAL_HEADER_SEALED(h) \
+ (!!(le32toh((h)->compatible_flags) & HEADER_COMPATIBLE_SEALED))
-uint64_t journal_file_entry_n_items(Object *o);
-uint64_t journal_file_entry_array_n_items(Object *o);
+#define JOURNAL_HEADER_COMPRESSED_XZ(h) \
+ (!!(le32toh((h)->incompatible_flags) & HEADER_INCOMPATIBLE_COMPRESSED_XZ))
-int journal_file_append_object(JournalFile *f, int type, uint64_t size, Object **ret, uint64_t *offset);
+#define JOURNAL_HEADER_COMPRESSED_LZ4(h) \
+ (!!(le32toh((h)->incompatible_flags) & HEADER_INCOMPATIBLE_COMPRESSED_LZ4))
+
+int journal_file_move_to_object(JournalFile *f, ObjectType type, uint64_t offset, Object **ret);
+
+uint64_t journal_file_entry_n_items(Object *o) _pure_;
+uint64_t journal_file_entry_array_n_items(Object *o) _pure_;
+uint64_t journal_file_hash_table_n_items(Object *o) _pure_;
+
+int journal_file_append_object(JournalFile *f, ObjectType type, uint64_t size, Object **ret, uint64_t *offset);
int journal_file_append_entry(JournalFile *f, const dual_timestamp *ts, const struct iovec iovec[], unsigned n_iovec, uint64_t *seqno, Object **ret, uint64_t *offset);
int journal_file_find_data_object(JournalFile *f, const void *data, uint64_t size, Object **ret, uint64_t *offset);
int journal_file_find_data_object_with_hash(JournalFile *f, const void *data, uint64_t size, uint64_t hash, Object **ret, uint64_t *offset);
-int journal_file_next_entry(JournalFile *f, Object *o, uint64_t p, direction_t direction, Object **ret, uint64_t *offset);
-int journal_file_skip_entry(JournalFile *f, Object *o, uint64_t p, int64_t skip, Object **ret, uint64_t *offset);
+int journal_file_find_field_object(JournalFile *f, const void *field, uint64_t size, Object **ret, uint64_t *offset);
+int journal_file_find_field_object_with_hash(JournalFile *f, const void *field, uint64_t size, uint64_t hash, Object **ret, uint64_t *offset);
+
+void journal_file_reset_location(JournalFile *f);
+void journal_file_save_location(JournalFile *f, direction_t direction, Object *o, uint64_t offset);
+int journal_file_compare_locations(JournalFile *af, JournalFile *bf);
+int journal_file_next_entry(JournalFile *f, uint64_t p, direction_t direction, Object **ret, uint64_t *offset);
int journal_file_next_entry_for_data(JournalFile *f, Object *o, uint64_t p, uint64_t data_offset, direction_t direction, Object **ret, uint64_t *offset);
-int journal_file_move_to_entry_by_offset(JournalFile *f, uint64_t seqnum, direction_t direction, Object **ret, uint64_t *offset);
int journal_file_move_to_entry_by_seqnum(JournalFile *f, uint64_t seqnum, direction_t direction, Object **ret, uint64_t *offset);
int journal_file_move_to_entry_by_realtime(JournalFile *f, uint64_t realtime, direction_t direction, Object **ret, uint64_t *offset);
int journal_file_move_to_entry_by_monotonic(JournalFile *f, sd_id128_t boot_id, uint64_t monotonic, direction_t direction, Object **ret, uint64_t *offset);
void journal_file_dump(JournalFile *f);
void journal_file_print_header(JournalFile *f);
-int journal_file_rotate(JournalFile **f, bool compress, bool authenticate);
+int journal_file_rotate(JournalFile **f, bool compress, bool seal);
void journal_file_post_change(JournalFile *f);
int journal_file_get_cutoff_realtime_usec(JournalFile *f, usec_t *from, usec_t *to);
int journal_file_get_cutoff_monotonic_usec(JournalFile *f, sd_id128_t boot, usec_t *from, usec_t *to);
-bool journal_file_rotate_suggested(JournalFile *f);
+bool journal_file_rotate_suggested(JournalFile *f, usec_t max_file_usec);
~ianmdlvl / elogind.git / blobdiff