1 files changed, 14 insertions, 0 deletions
diff --git a/src/wal.h b/src/wal.h
index a62b23b..a848de1 100644
--- a/src/wal.h
+++ b/src/wal.h
@@ -19,6 +19,12 @@
 
 #include "sqliteInt.h"
 
+/* Additional values that can be added to the sync_flags argument of
+** sqlite3WalFrames():
+*/
+#define WAL_SYNC_TRANSACTIONS  0x20   /* Sync at the end of each transaction */
+#define SQLITE_SYNC_MASK       0x13   /* Mask off the SQLITE_SYNC_* values */
+
 #ifdef SQLITE_OMIT_WAL
 # define sqlite3WalOpen(x,y,z)                   0
 # define sqlite3WalLimit(x,y)
@@ -37,6 +43,7 @@
 # define sqlite3WalCallback(z)                   0
 # define sqlite3WalExclusiveMode(y,z)            0
 # define sqlite3WalHeapMemory(z)                 0
+# define sqlite3WalFramesize(z)                  0
 #else
 
 #define WAL_SAVEPOINT_NDATA 4
@@ -118,5 +125,12 @@ int sqlite3WalExclusiveMode(Wal *pWal, int op);
 */
 int sqlite3WalHeapMemory(Wal *pWal);
 
+#ifdef SQLITE_ENABLE_ZIPVFS
+/* If the WAL file is not empty, return the number of bytes of content
+** stored in each frame (i.e. the db page-size when the WAL was created).
+*/
+int sqlite3WalFramesize(Wal *pWal);
+#endif
+
 #endif /* ifndef SQLITE_OMIT_WAL */
 #endif /* _WAL_H_ */