Copyright 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ 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
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ 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 <inttypes.h>
+#include <systemd/sd-id128.h>
+
+#include "sparse-endian.h"
#include "journal-def.h"
#include "util.h"
-#include "sd-id128.h"
+
+typedef struct Window {
+ void *ptr;
+ uint64_t offset;
+ uint64_t size;
+} Window;
+
+enum {
+ WINDOW_UNKNOWN = OBJECT_UNUSED,
+ WINDOW_DATA = OBJECT_DATA,
+ WINDOW_ENTRY = OBJECT_ENTRY,
+ WINDOW_DATA_HASH_TABLE = OBJECT_DATA_HASH_TABLE,
+ WINDOW_FIELD_HASH_TABLE = OBJECT_FIELD_HASH_TABLE,
+ WINDOW_ENTRY_ARRAY = OBJECT_ENTRY_ARRAY,
+ WINDOW_HEADER,
+ _WINDOW_MAX
+};
+
+typedef struct JournalMetrics {
+ uint64_t max_use;
+ uint64_t max_size;
+ uint64_t min_size;
+ uint64_t keep_free;
+} JournalMetrics;
typedef struct JournalFile {
int fd;
char *path;
struct stat last_stat;
+ mode_t mode;
+ int flags;
int prot;
bool writable;
+ bool tail_entry_monotonic_valid;
Header *header;
+ HashItem *data_hash_table;
+ HashItem *field_hash_table;
- HashItem *hash_table;
- void *hash_table_window;
- uint64_t hash_table_window_size;
+ Window windows[_WINDOW_MAX];
- uint64_t *bisect_table;
- void *bisect_table_window;
- uint64_t bisect_table_window_size;
+ uint64_t current_offset;
- void *window;
- uint64_t window_offset;
- uint64_t window_size;
+ JournalMetrics metrics;
- uint64_t current_offset;
-} JournalFile;
+ bool compress;
-typedef struct JournalCursor {
- uint8_t version;
- uint8_t reserved[7];
- uint64_t seqnum;
- sd_id128_t seqnum_id;
- sd_id128_t boot_id;
- uint64_t monotonic;
- uint64_t realtime;
- uint64_t xor_hash;
-} JournalCursor;
+#ifdef HAVE_XZ
+ void *compress_buffer;
+ uint64_t compress_buffer_size;
+#endif
+} JournalFile;
-int journal_file_open(const char *fname, int flags, mode_t mode, JournalFile **ret);
+typedef enum direction {
+ DIRECTION_UP,
+ DIRECTION_DOWN
+} direction_t;
+int journal_file_open(const char *fname, int flags, mode_t mode, JournalFile *template, JournalFile **ret);
void journal_file_close(JournalFile *j);
-int journal_file_move_to_object(JournalFile *f, uint64_t offset, int type, Object **ret);
+int journal_file_open_reliably(const char *fname, int flags, mode_t mode, JournalFile *template, JournalFile **ret);
+
+int journal_file_move_to_object(JournalFile *f, int type, uint64_t offset, Object **ret);
uint64_t journal_file_entry_n_items(Object *o);
-int journal_file_append_entry(JournalFile *f, const dual_timestamp *ts, const struct iovec iovec[], unsigned n_iovec, 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_move_to_entry(JournalFile *f, uint64_t seqnum, 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_find_first_entry(JournalFile *f, const void *data, uint64_t size, Object **ret, uint64_t *offset);
-int journal_file_find_last_entry(JournalFile *f, const void *data, uint64_t size, 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_next_entry(JournalFile *f, Object *o, Object **ret, uint64_t *offset);
-int journal_file_prev_entry(JournalFile *f, Object *o, 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_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);
+
+int journal_file_move_to_entry_by_seqnum_for_data(JournalFile *f, uint64_t data_offset, uint64_t seqnum, direction_t direction, Object **ret, uint64_t *offset);
+int journal_file_move_to_entry_by_realtime_for_data(JournalFile *f, uint64_t data_offset, uint64_t realtime, direction_t direction, Object **ret, uint64_t *offset);
+
+int journal_file_copy_entry(JournalFile *from, JournalFile *to, Object *o, uint64_t p, uint64_t *seqnum, Object **ret, uint64_t *offset);
void journal_file_dump(JournalFile *f);
+int journal_file_rotate(JournalFile **f);
+
+int journal_directory_vacuum(const char *directory, uint64_t max_use, uint64_t min_free);
+
+void journal_file_post_change(JournalFile *f);
+
+void journal_default_metrics(JournalMetrics *m, int fd);
+
+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);
+
#endif
~ianmdlvl / elogind.git / blobdiff