2011-10-07 21:06:39 +02:00
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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2012-07-18 19:07:51 +02:00
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#pragma once
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2011-10-07 21:06:39 +02:00
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/***
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This file is part of systemd.
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Copyright 2011 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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2012-04-12 00:20:58 +02:00
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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2011-10-07 21:06:39 +02:00
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2012-04-12 00:20:58 +02:00
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Lesser General Public License for more details.
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2011-10-07 21:06:39 +02:00
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2012-04-12 00:20:58 +02:00
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You should have received a copy of the GNU Lesser General Public License
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2011-10-07 21:06:39 +02:00
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <inttypes.h>
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2012-08-13 20:31:10 +02:00
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#ifdef HAVE_GCRYPT
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#include <gcrypt.h>
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#endif
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2012-01-05 16:01:58 +01:00
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#include <systemd/sd-id128.h>
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2012-03-16 11:59:04 +01:00
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#include "sparse-endian.h"
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2011-10-07 21:06:39 +02:00
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#include "journal-def.h"
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#include "util.h"
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2012-08-14 22:02:24 +02:00
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#include "mmap-cache.h"
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2011-11-08 18:20:03 +01:00
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2011-12-20 02:38:36 +01:00
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typedef struct JournalMetrics {
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2011-12-31 02:31:54 +01:00
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uint64_t max_use;
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2011-12-20 02:38:36 +01:00
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uint64_t max_size;
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uint64_t min_size;
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uint64_t keep_free;
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} JournalMetrics;
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2011-10-07 23:03:07 +02:00
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typedef struct JournalFile {
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int fd;
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char *path;
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struct stat last_stat;
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2011-10-13 05:19:35 +02:00
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mode_t mode;
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2012-08-13 20:31:10 +02:00
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2011-10-13 05:19:35 +02:00
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int flags;
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2011-10-07 23:03:07 +02:00
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int prot;
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bool writable;
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bool compress;
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bool authenticate;
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2011-11-08 18:20:03 +01:00
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bool tail_entry_monotonic_valid;
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2011-10-07 23:03:07 +02:00
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Header *header;
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2011-11-08 18:20:03 +01:00
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HashItem *data_hash_table;
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HashItem *field_hash_table;
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2011-10-07 23:03:07 +02:00
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uint64_t current_offset;
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2011-12-20 02:38:36 +01:00
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JournalMetrics metrics;
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2012-08-14 22:02:24 +02:00
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MMapCache *mmap;
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2011-12-21 02:40:59 +01:00
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#ifdef HAVE_XZ
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void *compress_buffer;
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2012-01-11 22:44:43 +01:00
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uint64_t compress_buffer_size;
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2011-12-21 02:40:59 +01:00
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#endif
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2012-08-13 20:31:10 +02:00
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#ifdef HAVE_GCRYPT
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gcry_md_hd_t hmac;
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bool hmac_running;
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FSPRGHeader *fsprg_header;
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size_t fsprg_size;
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#endif
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2011-10-07 23:03:07 +02:00
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} JournalFile;
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2011-10-15 01:38:44 +02:00
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typedef enum direction {
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DIRECTION_UP,
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DIRECTION_DOWN
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} direction_t;
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2012-07-17 00:36:15 +02:00
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int journal_file_open(
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const char *fname,
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int flags,
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mode_t mode,
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bool compress,
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bool authenticate,
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JournalMetrics *metrics,
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MMapCache *mmap,
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2012-07-17 00:36:15 +02:00
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JournalFile *template,
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JournalFile **ret);
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2011-10-07 21:06:39 +02:00
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void journal_file_close(JournalFile *j);
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2012-07-17 00:36:15 +02:00
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int journal_file_open_reliably(
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const char *fname,
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int flags,
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mode_t mode,
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2012-08-13 20:31:10 +02:00
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bool compress,
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bool authenticate,
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2012-07-17 00:36:15 +02:00
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JournalMetrics *metrics,
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2012-08-14 22:02:24 +02:00
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MMapCache *mmap,
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2012-07-17 00:36:15 +02:00
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JournalFile *template,
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JournalFile **ret);
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2012-03-15 01:13:01 +01:00
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2011-11-08 18:20:03 +01:00
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int journal_file_move_to_object(JournalFile *f, int type, uint64_t offset, Object **ret);
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2011-10-07 21:06:39 +02:00
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uint64_t journal_file_entry_n_items(Object *o);
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2011-10-14 05:12:58 +02:00
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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);
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2011-10-07 21:06:39 +02:00
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2011-11-08 18:20:03 +01:00
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int journal_file_find_data_object(JournalFile *f, const void *data, uint64_t size, Object **ret, uint64_t *offset);
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int journal_file_find_data_object_with_hash(JournalFile *f, const void *data, uint64_t size, uint64_t hash, Object **ret, uint64_t *offset);
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2011-10-07 21:06:39 +02:00
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2011-11-08 18:20:03 +01:00
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int journal_file_next_entry(JournalFile *f, Object *o, uint64_t p, direction_t direction, Object **ret, uint64_t *offset);
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int journal_file_skip_entry(JournalFile *f, Object *o, uint64_t p, int64_t skip, Object **ret, uint64_t *offset);
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2011-10-07 21:06:39 +02:00
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2011-11-08 18:20:03 +01:00
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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);
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2012-07-13 00:29:26 +02:00
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int journal_file_move_to_entry_by_offset(JournalFile *f, uint64_t seqnum, direction_t direction, Object **ret, uint64_t *offset);
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int journal_file_move_to_entry_by_seqnum(JournalFile *f, uint64_t seqnum, direction_t direction, Object **ret, uint64_t *offset);
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int journal_file_move_to_entry_by_realtime(JournalFile *f, uint64_t realtime, direction_t direction, Object **ret, uint64_t *offset);
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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);
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2012-07-13 00:29:26 +02:00
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int journal_file_move_to_entry_by_offset_for_data(JournalFile *f, uint64_t data_offset, uint64_t p, direction_t direction, Object **ret, uint64_t *offset);
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2011-11-08 18:20:03 +01:00
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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);
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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);
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2012-07-13 00:29:26 +02:00
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int journal_file_move_to_entry_by_monotonic_for_data(JournalFile *f, uint64_t data_offset, sd_id128_t boot_id, uint64_t monotonic, direction_t direction, Object **ret, uint64_t *offset);
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2011-10-07 21:06:39 +02:00
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2011-12-29 15:00:57 +01:00
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int journal_file_copy_entry(JournalFile *from, JournalFile *to, Object *o, uint64_t p, uint64_t *seqnum, Object **ret, uint64_t *offset);
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2011-10-07 21:06:39 +02:00
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void journal_file_dump(JournalFile *f);
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2012-07-16 22:24:02 +02:00
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void journal_file_print_header(JournalFile *f);
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2012-08-13 20:31:10 +02:00
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int journal_file_rotate(JournalFile **f, bool compress, bool authenticate);
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2011-10-13 05:19:35 +02:00
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int journal_directory_vacuum(const char *directory, uint64_t max_use, uint64_t min_free);
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2011-12-29 15:00:57 +01:00
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void journal_file_post_change(JournalFile *f);
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2011-12-31 02:31:54 +01:00
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void journal_default_metrics(JournalMetrics *m, int fd);
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2012-06-09 10:32:38 +02:00
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int journal_file_get_cutoff_realtime_usec(JournalFile *f, usec_t *from, usec_t *to);
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int journal_file_get_cutoff_monotonic_usec(JournalFile *f, sd_id128_t boot, usec_t *from, usec_t *to);
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2012-07-16 22:24:02 +02:00
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bool journal_file_rotate_suggested(JournalFile *f);
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2012-08-13 20:57:38 +02:00
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int journal_file_append_tag(JournalFile *f);
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2012-08-15 01:54:09 +02:00
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int journal_file_verify(JournalFile *f, const char *key);
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