+void mkdirSafe(const std::string &path, mode_t mode);
+void mktreeSafe(const std::string &path, mode_t mode);
+void creatSafe(const std::string &path, mode_t mode);
+void symlinkSafe(const std::string &targetPath, const std::string &linkPath);
+void removeDir(const std::string &path);