-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
#pragma once
/***
#include <inttypes.h>
-#ifdef HAVE_GCRYPT
+#if HAVE_GCRYPT
#include <gcrypt.h>
#endif
-#include "systemd/sd-id128.h"
+#include "sd-id128.h"
-#include "sparse-endian.h"
+#include "hashmap.h"
#include "journal-def.h"
-#include "util.h"
+#include "macro.h"
#include "mmap-cache.h"
-#include "hashmap.h"
+#include "sd-event.h"
+#include "sparse-endian.h"
typedef struct JournalMetrics {
- uint64_t max_use;
- uint64_t use;
- uint64_t max_size;
- uint64_t min_size;
- uint64_t keep_free;
+ /* For all these: -1 means "pick automatically", and 0 means "no limit enforced" */
+ uint64_t max_size; /* how large journal files grow at max */
+ uint64_t min_size; /* how large journal files grow at least */
+ uint64_t max_use; /* how much disk space to use in total at max, keep_free permitting */
+ uint64_t min_use; /* how much disk space to use in total at least, even if keep_free says not to */
+ uint64_t keep_free; /* how much to keep free on disk */
+ uint64_t n_max_files; /* how many files to keep around at max */
} JournalMetrics;
typedef enum direction {
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 enum OfflineState {
+ OFFLINE_JOINED,
+ OFFLINE_SYNCING,
+ OFFLINE_OFFLINING,
+ OFFLINE_CANCEL,
+ OFFLINE_AGAIN_FROM_SYNCING,
+ OFFLINE_AGAIN_FROM_OFFLINING,
+ OFFLINE_DONE
+} OfflineState;
+
typedef struct JournalFile {
int fd;
+ MMapFileDescriptor *cache_fd;
mode_t mode;
bool compress_xz:1;
bool compress_lz4:1;
bool seal:1;
+ bool defrag_on_close:1;
+ bool close_fd:1;
+ bool archive:1;
bool tail_entry_monotonic_valid:1;
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;
+ sd_event_source *post_change_timer;
+ usec_t post_change_timer_period;
+
OrderedHashmap *chain_cache;
-#if defined(HAVE_XZ) || defined(HAVE_LZ4)
+ pthread_t offline_thread;
+ volatile OfflineState offline_state;
+
+#if HAVE_XZ || HAVE_LZ4
void *compress_buffer;
size_t compress_buffer_size;
#endif
-#ifdef HAVE_GCRYPT
+#if HAVE_GCRYPT
gcry_md_hd_t hmac;
bool hmac_running;
} JournalFile;
int journal_file_open(
+ int fd,
const char *fname,
int flags,
mode_t mode,
bool seal,
JournalMetrics *metrics,
MMapCache *mmap_cache,
+ Set *deferred_closes,
JournalFile *template,
JournalFile **ret);
-int journal_file_set_offline(JournalFile *f);
-void journal_file_close(JournalFile *j);
+int journal_file_set_offline(JournalFile *f, bool wait);
+bool journal_file_is_offlining(JournalFile *f);
+JournalFile* journal_file_close(JournalFile *j);
+void journal_file_close_set(Set *s);
int journal_file_open_reliably(
const char *fname,
bool seal,
JournalMetrics *metrics,
MMapCache *mmap_cache,
+ Set *deferred_closes,
JournalFile *template,
JournalFile **ret);
#define JOURNAL_HEADER_COMPRESSED_LZ4(h) \
(!!(le32toh((h)->incompatible_flags) & HEADER_INCOMPATIBLE_COMPRESSED_LZ4))
-int journal_file_move_to_object(JournalFile *f, int type, uint64_t offset, Object **ret);
+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, int type, uint64_t size, Object **ret, uint64_t *offset);
+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_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);
-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);
+void journal_file_reset_location(JournalFile *f);
+void journal_file_save_location(JournalFile *f, 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 seal);
+int journal_file_rotate(JournalFile **f, bool compress, bool seal, Set *deferred_closes);
void journal_file_post_change(JournalFile *f);
+int journal_file_enable_post_change_timer(JournalFile *f, sd_event *e, usec_t t);
+void journal_reset_metrics(JournalMetrics *m);
void journal_default_metrics(JournalMetrics *m, int fd);
int journal_file_get_cutoff_realtime_usec(JournalFile *f, usec_t *from, usec_t *to);
bool journal_file_rotate_suggested(JournalFile *f, usec_t max_file_usec);
+int journal_file_map_data_hash_table(JournalFile *f);
+int journal_file_map_field_hash_table(JournalFile *f);
-static unsigned type_to_context(int type) {
- /* One context for each type, plus one catch-all for the rest */
- return type > 0 && type < _OBJECT_TYPE_MAX ? type : 0;
+static inline bool JOURNAL_FILE_COMPRESS(JournalFile *f) {
+ assert(f);
+ return f->compress_xz || f->compress_lz4;
}
projects / thirdparty / systemd.git / blobdiff