journal: implement time-based rotation/vacuuming

This also enables time-based rotation (but not vacuuming) after 1month,
so that not more one month of journal is lost at a time per vacuuming.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/journal/journald.h b/src/journal/journald.h
index 25e7ec3b11..e3ef3b529d 100644
--- a/src/journal/journald.h
+++ b/src/journal/journald.h
@@ -91,6 +91,10 @@ typedef struct Server {
 
         uint64_t var_available_timestamp;
 
+        usec_t max_retention_usec;
+        usec_t max_file_usec;
+        usec_t oldest_file_usec;
+
         gid_t file_gid;
         bool file_gid_valid;