diff --git a/emacs.d/wpc/fs-functions.el b/emacs.d/wpc/fs-functions.el
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+;;; fs-functions.el --- Functions to make working with the filesystem easier. -*- lexical-binding: t -*-
+;; Author: William Carroll <wpcarro@gmail.com>
+
+;;; Commentary:
+;; Hosts ergonomic functions for working with a filesystem.
+
+;;; Code:
+
+(require 'dash)
+(require 'f)
+
+(defun ensure-file-path (path)
+  "Ensure that a file and its directories in PATH exist.
+Will error for inputs with a trailing slash."
+  (when (s-ends-with? "/" path)
+    (error (format "Input path has trailing slash: %s" path)))
+  (let ((dirs (->> path f-dirname f-split)))
+    (apply #'f-mkdir dirs)
+    (f-touch path)))
+
+(defun ensure-dir-path (path)
+  "Ensures that a directory and its ancestor directories in PATH exist."
+  (->> path
+       f-split
+       (apply #'f-mkdir)))
+
+(provide 'fs-functions)
+;;; fs-functions.el ends here