Add the sqlite3PagerWalFramesize() function to pager.c. This is used by zipvfs.

FossilOrigin-Name: 786e24dc56504d1958db0618e645610f2600a087

1 files changed, 6 insertions, 0 deletions

diff --git a/src/wal.h b/src/wal.h
index fac762e87..437acd1df 100644
--- a/src/wal.h
+++ b/src/wal.h
@@ -43,6 +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
@@ -124,5 +125,10 @@ int sqlite3WalExclusiveMode(Wal *pWal, int op);
 */
 int sqlite3WalHeapMemory(Wal *pWal);
 
+/* 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 /* ifndef SQLITE_OMIT_WAL */
 #endif /* _WAL_H_ */