Fix occasional crash in mkdir() on Windows

ChangeLog.txt

@@ -1,5 +1,8 @@
 Version 0.10.2 (unreleased)
 ---------------
+Fixed bugs:
+* Fix occasional crash in mkdir() on Windows
+
 Improvements:
 * Better logging when local state can't be loaded
 

src/cryfs/filesystem/CryDevice.cpp

@@ -179,7 +179,7 @@ optional<unique_ref<fspp::Symlink>> CryDevice::LoadSymlink(const bf::path &path)
 optional<unique_ref<fspp::Node>> CryDevice::Load(const bf::path &path) {
   // TODO Is it faster to not let CryFile/CryDir/CryDevice inherit from CryNode and loading CryNode without having to know what it is?
   // TODO Split into smaller functions
-  ASSERT(path.has_root_directory() && !path.has_root_name(), "Must be an absolute path (but on windows without device specifier)");
+  ASSERT(path.has_root_directory() && !path.has_root_name(), "Must be an absolute path (but on windows without device specifier): " + path.string());
 
   callFsActionCallbacks();
 

src/fspp/fuse/Fuse.cpp

@@ -451,6 +451,11 @@ int Fuse::mkdir(const bf::path &path, ::mode_t mode) {
 #endif
   try {
     ASSERT(is_valid_fspp_path(path), "has to be an absolute path");
+	// DokanY seems to call mkdir("/"). Ignore that
+	if ("/" == path) {
+		return 0;
+	}
+
     auto context = fuse_get_context();
     _fs->mkdir(path, mode, context->uid, context->gid);
     return 0;