journal: implement seek to head/tail

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

diff --git a/src/journal/journal-file.h b/src/journal/journal-file.h
index 55cc7153af1f9e50450d08efe8a4f2a42a476860..795a446dc8dc636e7408315a07a5c70cbf5cb194 100644 (file)
--- a/src/journal/journal-file.h
+++ b/src/journal/journal-file.h
@@ -32,6 +32,8 @@ typedef struct JournalFile {
         int fd;
         char *path;
         struct stat last_stat;
+        mode_t mode;
+        int flags;
         int prot;
         bool writable;
 
@@ -52,18 +54,12 @@ typedef struct JournalFile {
         uint64_t current_offset;
 } JournalFile;
 
-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;
+typedef enum direction {
+        DIRECTION_UP,
+        DIRECTION_DOWN
+} direction_t;
 
-int journal_file_open(const char *fname, int flags, mode_t mode, JournalFile **ret);
+int journal_file_open(const char *fname, int flags, mode_t mode, JournalFile *template, JournalFile **ret);
 
 void journal_file_close(JournalFile *j);
 
@@ -71,16 +67,19 @@ int journal_file_move_to_object(JournalFile *f, uint64_t offset, int type, Objec
 
 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_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_find_first_entry(JournalFile *f, const void *data, uint64_t size, direction_t direction, 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(JournalFile *f, Object *o, direction_t direction, 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);
+
+
 #endif