Added AUFS

Author: spencertipping

README.md

@@ -22,8 +22,10 @@ with sshfs.
     $ cd nfs:machine:/woot      # mounts NFS directories
     $ cd enc:/path/to/encrypted # mounts an encfs directory
     $ cd loop:image.iso         # mounts a loopback image
+    $ cd au:/usr:/var           # AUFS union mount
 
-Fuse-mounted directories are unmounted automatically when you `cd` out of them.
+Fuse and root-mounted directories are unmounted automatically when you `cd` out
+of them.
 
 `cd` also supports symlinks to virtual directories. For example:
 

cd

@@ -384,8 +384,8 @@ cd_push_history "$PWD"
 
 # process any args we have for this script
 if [[ $CD_EXTENSIONS = 'all' ]]; then
-  for extension in ssh archive dev loop encfs git nfs history missing-mkdir \
-                   hdfs http postgresqlfs traverse; do
+  for extension in ssh aufs archive dev loop encfs git nfs history \
+                   missing-mkdir hdfs http postgresqlfs traverse; do
     . $cd_path/cd-$extension
   done
 else

cd-aufs

@@ -0,0 +1,13 @@
+#!/bin/bash
+# AUFS mounts | Spencer Tipping
+# Licensed under the terms of the MIT source code license
+
+cd_on '(^|-)u:' cd_aufs_mount cd_aufs_umount
+
+function cd_aufs_mount {
+  cd_mount "cd_as_root mount -t aufs -o br:${1#u:}" "$1"
+}
+
+function cd_aufs_umount {
+  cd_umount "cd_as_root umount" "$@"
+}

cd-loop

@@ -2,7 +2,7 @@
 # Single-user loopback mounting | Spencer Tipping
 # Licensed under the terms of the MIT source code license
 
-cd_on '^loop:' cd_loop_mount cd_loop_umount
+cd_on '(^|-)loop:' cd_loop_mount cd_loop_umount
 
 function cd_loop_mount {
   target="${1#loop:}"