diff -r 8f5c556120a5 -r f927ef81a12b src/server/plugins/postgresql/webdav.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/server/plugins/postgresql/webdav.c	Tue Apr 19 18:23:54 2022 +0200
@@ -0,0 +1,84 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2022 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "webdav.h"
+
+static WebdavBackend pg_webdav_backend = {
+    pg_dav_propfind_init,
+    pg_dav_propfind_do,
+    pg_dav_propfind_finish,
+    pg_dav_proppatch_do,
+    pg_dav_proppatch_finish,
+    NULL, // opt_mkcol
+    NULL, // opt_mkcol_finish
+    NULL, // opt_delete
+    NULL, // opt_delete_finish
+    0,
+    NULL
+};
+
+int pg_dav_propfind_init(
+        WebdavPropfindRequest *rq,
+        const char *path,
+        WebdavPList **outplist)
+{
+    return 1;
+}
+
+int pg_dav_propfind_do(
+	WebdavPropfindRequest *rq,
+	WebdavResponse *response,
+	VFS_DIR parent,
+	WebdavResource *resource,
+	struct stat *s)
+{
+    return 1;
+}
+
+int pg_dav_propfind_finish(WebdavPropfindRequest *rq) {
+    return 1;
+}
+
+int pg_dav_proppatch_do(
+	WebdavProppatchRequest *request,
+	WebdavResource *response,
+	VFSFile *file,
+	WebdavPList **out_set,
+	WebdavPList **out_remove)
+{
+    return 1;
+}
+
+int pg_dav_proppatch_finish(
+	WebdavProppatchRequest *request,
+	WebdavResource *response,
+	VFSFile *file,
+	WSBool commit)
+{
+    return 1;
+}