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Diffstat (limited to 'src/journal/journal-file.h')
| -rw-r--r-- | src/journal/journal-file.h | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/src/journal/journal-file.h b/src/journal/journal-file.h deleted file mode 100644 index 07b9561b8a..0000000000 --- a/src/journal/journal-file.h +++ /dev/null @@ -1,245 +0,0 @@ -#pragma once - -/*** - This file is part of systemd. - - Copyright 2011 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - 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 - Lesser General Public License for more details. - - 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> - -#ifdef HAVE_GCRYPT -#include <gcrypt.h> -#endif - -#include "sd-id128.h" - -#include "hashmap.h" -#include "journal-def.h" -#include "macro.h" -#include "mmap-cache.h" -#include "sd-event.h" -#include "sparse-endian.h" - -typedef struct JournalMetrics { - /* 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_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; - - mode_t mode; - - int flags; - int prot; - 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; - - 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) - void *compress_buffer; - size_t compress_buffer_size; -#endif - -#ifdef HAVE_GCRYPT - gcry_md_hd_t hmac; - bool hmac_running; - - 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; - -int journal_file_open( - const char *fname, - int flags, - mode_t mode, - bool compress, - bool seal, - JournalMetrics *metrics, - MMapCache *mmap_cache, - JournalFile *template, - JournalFile **ret); - -int journal_file_set_offline(JournalFile *f); -JournalFile* journal_file_close(JournalFile *j); - -int journal_file_open_reliably( - const char *fname, - int flags, - mode_t mode, - bool compress, - 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)) - -#define JOURNAL_HEADER_SEALED(h) \ - (!!(le32toh((h)->compatible_flags) & HEADER_COMPATIBLE_SEALED)) - -#define JOURNAL_HEADER_COMPRESSED_XZ(h) \ - (!!(le32toh((h)->incompatible_flags) & HEADER_INCOMPATIBLE_COMPRESSED_XZ)) - -#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_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, 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_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_offset_for_data(JournalFile *f, uint64_t data_offset, uint64_t p, 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_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); - -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); -void journal_file_print_header(JournalFile *f); - -int journal_file_rotate(JournalFile **f, bool compress, bool seal); - -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); -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, usec_t max_file_usec); - -int journal_file_map_data_hash_table(JournalFile *f); -int journal_file_map_field_hash_table(JournalFile *f); - -static inline bool JOURNAL_FILE_COMPRESS(JournalFile *f) { - assert(f); - return f->compress_xz || f->compress_lz4; -} |