+int stat(const Path &fn, struct stat &st)
+{
+ return ::stat(fn.str().c_str(), &st);
+}
+
+struct stat stat(const Path &fn)
+{
+ struct stat st;
+ if(stat(fn, st)==-1)
+ throw SystemError("stat failed", errno);
+ return st;
+}
+
+Path getcwd()
+{
+ char buf[1024];
+ return ::getcwd(buf, sizeof(buf));
+}
+
+Path get_home_dir()
+{
+#ifndef WIN32
+ const char *home=getenv("HOME");
+ if(home)
+ return home;
+ return ".";
+#else
+ return ".";
+#endif
+}
+
+void chdir(const Path &path)
+{
+ if(::chdir(path.str().c_str())==-1)
+ throw SystemError("chdir failed", errno);
+}
+