--- a/dav/sync.h	Sat Mar 23 10:04:18 2019 +0100
+++ b/dav/sync.h	Tue Mar 26 17:30:34 2019 +0100
@@ -131,6 +131,8 @@
         DavResource *remote,
         LocalResource *res);
 
+size_t resource_get_blocksize(SyncDirectory *dir, LocalResource *local, DavResource *res, off_t filesize);
+
 int resource_pathlen_cmp(LocalResource *res1, LocalResource *res2, void *n);
 
 DavResource *versioning_simple_find(DavResource *res, const char *version);