enable nopath and nullpath_ok

src/fsyncdir.cpp

@@ -0,0 +1,53 @@
+/*
+  Copyright (c) 2017, Antonio SJ Musumeci <trapexit@spawn.link>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include <fuse.h>
+
+#include <string>
+#include <vector>
+
+#include "errno.hpp"
+#include "dirinfo.hpp"
+#include "fs_base_fsync.hpp"
+
+static
+int
+_fsyncdir(const DirInfo *di,
+          const int      isdatasync)
+{
+  int rv;
+
+  rv    = -1;
+  errno = ENOSYS;
+
+  return ((rv == -1) ? -errno : 0);
+}
+
+namespace mergerfs
+{
+  namespace fuse
+  {
+    int
+    fsyncdir(const char     *fusepath,
+             int             isdatasync,
+             fuse_file_info *ffi)
+    {
+      DirInfo *di = reinterpret_cast<DirInfo*>(ffi->fh);
+
+      return ::_fsyncdir(di,isdatasync);
+    }
+  }
+}