journal: keep per-JournalFile location info during iteration

[elogind.git] / src / journal / journal-file.h

diff --git a/src/journal/journal-file.h b/src/journal/journal-file.h
index 8c3f308ff2fff6330d2d457465d488284e6a1d79..2bdfff782e0e6353a420d3c6378dfe66968042ff 100644 (file)
--- a/src/journal/journal-file.h
+++ b/src/journal/journal-file.h
@@ -48,6 +48,20 @@ 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 struct JournalFile {
         int fd;
 
@@ -63,6 +77,7 @@ typedef struct JournalFile {
         bool tail_entry_monotonic_valid:1;
 
         direction_t last_direction;
+        LocationType location_type;
 
         char *path;
         struct stat last_stat;
@@ -72,6 +87,11 @@ typedef struct JournalFile {
         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;
@@ -175,8 +195,9 @@ int journal_file_find_data_object_with_hash(JournalFile *f, const void *data, ui
 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_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_for_data(JournalFile *f, Object *o, uint64_t p, uint64_t data_offset, direction_t direction, Object **ret, uint64_t *offset);