diff -r cd74667f6c85 -r 4adad7faf452 src/server/webdav/webdav.c
--- a/src/server/webdav/webdav.c	Sat Jan 25 15:34:30 2020 +0100
+++ b/src/server/webdav/webdav.c	Sat Jan 25 21:37:38 2020 +0100
@@ -64,6 +64,9 @@
     default_backend.propfind_init = default_propfind_init;
     default_backend.propfind_do = default_propfind_do;
     default_backend.propfind_finish = default_propfind_finish;
+    default_backend.proppatch_do = NULL;
+    default_backend.proppatch_finish = NULL;
+    default_backend.settings = WS_WEBDAV_PROPFIND_USE_VFS;
 }
 
 int webdav_init(pblock *pb, Session *sn, Request *rq) {
@@ -242,6 +245,9 @@
     VFSContext *vfs = NULL;
     if(usevfs) {
         vfs = vfs_request_context(sn, rq);
+        if(!vfs) {
+            return REQ_ABORTED;
+        }
         
         if(vfs_stat(vfs, path, &s)) {
             protocol_status(sn, rq, util_errno2status(vfs->vfs_errno), NULL);
@@ -491,14 +497,25 @@
 }
 
 WebdavPList* webdav_plist_clone(pool_handle_t *pool, WebdavPList *list) {
+    return webdav_plist_clone_s(pool, list, NULL);
+}
+
+WebdavPList* webdav_plist_clone_s(
+        pool_handle_t *pool,
+        WebdavPList *list,
+        size_t *newlen)
+{
     WebdavPList *new_list = NULL;     // start of the new list
     WebdavPList *new_list_end = NULL; // end of the new list
     
+    size_t len = 0;
+    
     WebdavPList *elm = list;
     while(elm) {
         // copy list item
         WebdavPList *new_elm = pool_malloc(pool, sizeof(WebdavPList));
         if(!new_elm) {
+            if(newlen) *newlen = 0;
             return NULL;
         }
         new_elm->property = elm->property; // new list contains original ptr
@@ -512,9 +529,11 @@
         }
         new_list_end = new_elm;
         
+        len++;
         elm = elm->next;
     }
     
+    if(newlen) *newlen = len;
     return new_list;
 }